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1. Isolate the equipment system and drain the water from the heat exchanger. 2. High pressure water is used to clean the remaining silt, algae and other impurities in the pipeline, and the system is closed. 3. Install ball valves (not less than 1 inch =2.54 cm) between isolation valves and exchangers. both inlet and return outlets should be installed. 4. Connect the transfer pump and the connecting pipe so that the cleaning agent is pumped into the bottom of the heat exchanger and out of the top. 5. Start pumping the required Fustec cleaner into the condenser (the ratio can be adjusted according to actual conditions). 6. Repeat the cycle to the recommended cleaning time. With the progress of the circulation and the dissolution of the sediment, the gas generated during the reaction will also increase, and the excess air should be discharged through the vent valve at any time. With the discharge of air, the space in the heat exchanger will increase, and the appropriate water can be added. Do not inject a lot of water at the beginning, which may cause water overflow. 7. To check the validity of cleaning agents regularly in the cycle, you can use PH test paper. The cleaning agent remains effective if the solution is maintained at PH 2‐3. If the PH of the cleaning agent reaches 5‐6, an appropriate amount of the Forshitech cleaning agent should be added. The PH of the final solution remained unchanged for 30 minutes at 2‐3, proving that the cleaning effect was achieved. Note: Fostech cleaning agent can be recycled and reused, and discharges can be wasteful. 8. After reaching the cleaning time, recycle the cleaning solution. Rinse the exchanger repeatedly with water until it is clean and neutral. Use PH test paper to measure PH 6~7. 9. After cleaning, it can be turned on and run. You can also pressure test to see if there is leakage. If there is a leak, it can be repaired and protected by Mikka Wah polymer composite material, which can greatly extend the service life of the equipment. 10. After the equipment is stable, write down the current media flow, working pressure, heat exchange efficiency and other data.

1. Isolate the equipment system and drain the water from the heat exchanger. 2. High pressure water is used to clean the remaining silt, algae and other impurities in the pipeline, and the system is closed. 3. Install ball valves (not less than 1 inch =2.54 cm) between isolation valves and exchangers. both inlet and return outlets should be installed. 4. Connect the transfer pump and the connecting pipe so that the cleaning agent is pumped into the bottom of the heat exchanger and out of the top. 5. Start pumping the required Fustec cleaner into the condenser (the ratio can be adjusted according to actual conditions). 6. Repeat the cycle to the recommended cleaning time. With the progress of the circulation and the dissolution of the sediment, the gas generated during the reaction will also increase, and the excess air should be discharged through the vent valve at any time. With the discharge of air, the space in the heat exchanger will increase, and the appropriate water can be added. Do not inject a lot of water at the beginning, which may cause water overflow. 7. To check the validity of cleaning agents regularly in the cycle, you can use PH test paper. The cleaning agent remains effective if the solution is maintained at PH 2‐3. If the PH of the cleaning agent reaches 5‐6, an appropriate amount of the Forshitech cleaning agent should be added. The PH of the final solution remained unchanged for 30 minutes at 2‐3, proving that the cleaning effect was achieved. Note: Fostech cleaning agent can be recycled and reused, and discharges can be wasteful. 8. After reaching the cleaning time, recycle the cleaning solution. Rinse the exchanger repeatedly with water until it is clean and neutral. Use PH test paper to measure PH 6~7. 9. After cleaning, it can be turned on and run. You can also pressure test to see if there is leakage. If there is a leak, it can be repaired and protected by Mikka Wah polymer composite material, which can greatly extend the service life of the equipment. 10. After the equipment is stable, write down the current media flow, working pressure, heat exchange efficiency and other data.

What is the plate heat exchanger device? When the plate heat exchanger is used for juice heating, the heat exchanger should be as close as possible to the evaporation tank, shorten the pipeline of juice and juice steam, and reduce the temperature drop. The juice inlet valve in front of the heat exchanger is controlled as the juice inlet valve of the evaporation tank (that is, the valve control between the heat exchanger and the evaporation tank is not used), so as to avoid additional pressure and even water hammer phenomenon in the heat exchanger when the evaporation tank is closed. When the amount of juice is reduced, it should be turned off at the same time the steam (or hot water) valve, to avoid the temperature and pressure in the device is too high. The connecting pipes of plate heat exchanger should be properly treated. To prevent the weight of the pipeline and thermal expansion and contraction of the pull or thrust on its connection flange, the heat exchanger connection pipeline should be installed with 90° elbow. Its inlet valve should be before the drainage valve, before starting the pipe water and dirt discharge, to prevent water strike and bring into the dirt when starting. The material pipe should be provided with bypass and valve, and the bottom pipe should be set at the lower part. And there should be a test water pressure joint, before opening the two sides of the channel test water pressure inspection. Thermometer and pressure gauge should be installed at each connecting nozzle. When heating with steam, the condensing water temperature should be only slightly lower than the steam temperature (calculated by saturation), if the drop is too large, there is water in the expositor, which will significantly reduce its heat transfer performance. The heat exchanger should be equipped with good steam condensate water removal equipment. The plates of plate heat exchanger are compressed as a whole by end covers and bolts on both sides. One side of the end cover is fixed on the frame and us.

As the most important heat transfer link of the plate exchanger system, the quality of the plate heat exchanger directly affects the service life of the equipment.So the parameter type selection design of time, usually manufacturers will be in strict accordance with the customer to provide the parameters of iterative design, the medium through which it flows will confirm its physical performance, make sure to choose the corresponding material, because in the heat of different medium on the corresponding material plate is corrosive, so, according to the different heat transfer medium selection of suitable material of plates is quite important, in order to avoid the leaking! 1, water common tap water, pure water generally we choose stainless steel 304 material;So if it is well water, river water, closed circulating water and other media, we have to consider using 316L, because the components of these media are more complex, 304 corrosion resistance is not as good as 316L.So if it is seawater, we must consider using titanium alloy material, seawater chloride ion concentration is relatively high, only titanium alloy material can meet. 2, acid dilute sulfuric acid concentration is less than 10%, temperature below 50℃, can use stainless steel 316L material, if greater than the need to use Hastelloy alloy material.Phosphoric acid and hydrochloric acid work the same way. 3, oil general equipment lubricating oil, hydraulic oil are made of stainless steel 304 material.Considering the high temperature resistance of heat conduction oil, we use 316L material. 4. The working condition of steam steam is relatively common. Generally, we choose 316L material in the south, because the temperature of steam is generally above 120℃.In the north, considering the cost performance, 304 material will be chosen. For a long time, the plate heat exchanger plate is basically likely to be deformed

First, heat exchanger is insufficient Generally, it is caused by the following factors: too small type selection, insufficient steam capacity, poor discharge of condensate water, blocked waterways, undischarged air in heat exchanger, serious scale formation in heat exchanger, etc. 1. Selection is too small Under the condition of no problem in circulating water flow and heating steam flow, the heat exchange requirement can only be met when the steam inlet pressure is high, and the discharge temperature of condensate water is high.Once the steam pressure is reduced, it is impossible to ensure that heat exchange, this kind of situation is generally caused by too small radiator selection.Selection is too small, condensate discharge temperature is high, resulting in heat waste.And when the steam pressure can not ensure the normal heat supply, should replace or add heat exchanger in time. 2. There isn't enough steam The result shows that the heat exchange cannot be guaranteed when the steam inlet pressure of the heat exchanger is low.Check that the pressure reducing valve is adjusted correctly.If the pressure in front of the relief valve is low and the relief valve cannot be started, the relief valve bypass valve should be opened.If the pressure before the main steam valve is too low, should check the steam network and steam source, as long as the steam pressure is solved, heat exchange can be guaranteed. 3. Condensation water discharge is not free If the trap is blocked, it can be solved in time by cleaning the trap.In addition, the design of the condensate pipe is too small, will also cause the condensate discharge is not free, causing difficulty in the regulation of heat exchange.In this case to increase the size of the condensate pipe to solve. 4. Waterways blocked Characteristics: the temperature difference between outlet and inlet of heat exchanger is large, the difference between inlet and outlet water pressure is large, and the temperature of condensate water is high, and the heat exchange is insufficient.The water circulation flow of the heat exchanger is reduced and the heat transfer coefficient is reduced.Treatment: one is to carry out backwash, two is to disassemble the heat exchanger clean.The reason for the water channel blockage of heat exchanger is that the external pipe network especially the newly built pipe network is full of impurities and the decontamination capacity of the decontaminator is very poor.The decontamination apparatus should be modified in time to improve its performance and regularly discharge the pollutants in the apparatus.In addition, the construction management of the newly built pipe network should be strengthened. Foreign matters in the pipe must be cleaned during the installation process. The newly built pipe network should be flushed and connected with the network. 5. The road is blocked Characteristics: The temperature difference between inlet and outlet is small, the temperature of condensate is low (almost the same as the temperature of inlet), but the steam pressure is not low.Treatment method: First, check whether the trap is blocked and whether the drainage amount of the drainage pipe meets the requirements;Next check the steam filter and steam inlet valve.If there is no filter in the steam pipe, the possibility of steam blockage in the heat exchanger should be considered.Whether the steam line of heat exchanger is blocked or not is related to the quality of pipeline cleaning after the construction of steam pipeline.The heat exchanger should be disassembled and cleaned when the steam path of the heat exchanger is blocked seriously. 6. The air in the heat exchanger is not discharged This can be avoided by paying attention to the discharge of air from the heat exchanger during initial operation and checking the exhaust during operation. 7. Serious scaling in the heat exchanger The reason of fouling in heat exchanger is the poor quality of circulating water.Prevention is to control the quality of circulating water;Second, the scope of quantity regulation and quality regulation should be controlled reasonably;Third, efforts should be made to reduce the loss of water network.Scaling of heat exchanger results in low outlet temperature, high discharge temperature of condensate water and greatly reduced efficiency of heat exchanger.Treatment: one is to disassemble the heat exchanger to clean, the other is to carry out chemical cleaning of the heat exchanger. Second. Insufficient circulating water flow If the heating users continue to increase, but the pump is still the original pump, it will cause insufficient circulating water flow in the system. The circulating pump should be replaced or the number of circulating pumps should be increased.The deficiency of circulating water flow is characterized by large temperature difference between water supply and return water.The main pump should be checked whether the gas or blockage, impeller whether wear or whether there are other problems affecting the pump performance.Check the inlet and outlet valves of the circulating pump, check valves of the bypass pressure relief pipe of the circulating pump and the decontaminator, etc.Decontamination device blockage (decontamination device before and after the pressure difference is too large) will cause the circulation pump inlet pressure is too low, or even pump, affect the circulation water flow.If after the decontamination device clean, pump inlet pipe is still evacuated, generally is the design of the decontamination device caused by insufficient flow, should be modified decontamination device, increase its flow. Third, heat exchanger internal water hammer Water hammer in heat exchanger is usually caused by high condensate water level in heat exchanger.Generally, it can be solved by increasing the discharge of condensate.Also can suspend steam, will condensate after discharge into steam. Fourth, heat exchanger leakage Heat exchanger leakage is divided into two kinds: external leakage and internal leakage.Leakage is easy to find, according to the causes of leakage to take corresponding countermeasures to deal with.If the heat exchanger leakage, the general heat exchanger has the sound of water hammer, and condensate water increased, steam stop condensate discharge more than, this situation should be disassembled heat exchanger repair.

Design method of plate heat exchanger average temperature difference method Heat exchanger plate 1. Calculate the unknown temperature or flow rate, calculate the unknown temperature or flow rate through the heat balance equation, and also calculate the heat load Q. 2. Select the appropriate plate type, and select the appropriate plate type according to the heat exchange amount and flow rate. The choice of plate model depends on the specific working conditions. When the flow is large and the pressure drop is low, the plate type with low resistance should be selected; otherwise, the plate type with slightly larger resistance coefficient can be used. 3. Estimate the heat exchange area and calculate the approximate heat exchange area based on the heat exchange amount. 4. Select the flow and the number of channels, initially select the cold and hot fluid flow and the number of channels, and calculate the flow rate from this. 5. Find the average temperature difference. 6. To find the convective heat transfer coefficient and the total heat transfer coefficient, first calculate the convective heat transfer coefficients of the cold and hot fluids respectively, so as to calculate the total heat transfer coefficient

Our company produces a large plate heat exchanger, it is over 2.5 meters high. It is assembled and ready to dispatch.

First, the establishment of plate heat exchanger bypass Pipe When the flow of hot and cold media is relatively large, can be in the large flow side plate heat exchanger import and export of the question to set up a bypass tube, reduce the flow into the plate heat exchanger, reduce resistance. For ease of adjustment, a regulating valve should be installed on the bypass tube. This method should adopt the Countercurrent arrangement, make the cold medium out plate heat exchanger temperature is higher, ensure that the plate heat exchanger outlet confluence after the cold medium temperature can meet the design requirements. The plate heat exchanger bypass tube can ensure that the plate heat exchanger has a high heat transfer coefficient and reduce the resistance of the plate heat exchanger, but the adjustment is slightly more complex. Second, the choice of plate heat exchanger form The average flow rate of medium in the channel between plate heat exchanger is 0. 3~ 0. 6M/S is appropriate, resistance to not greater than KPA is appropriate. According to the flow ratio of different hot and cold media, different forms of plate heat exchanger can be selected by reference to table 1, and the cross-sectional area ratio of non-symmetrical plate heat exchanger in the table is 2. Using symmetrical or asymmetric type, single process or multi-process plate heat exchanger, the plate heat exchanger bypass tube can be set up, but should be calculated by detailed heat. When the flow rate of hot and cold media is relatively large, the use of hot mixing plate than the use of symmetrical single-process plate heat exchanger can reduce the plate area. The diameter of the corner hole on both sides of the hot mixing plate is usually equal, and when the flow ratio of the cold and hot medium is too large, the angle lone L pressure loss on one side of the cooling medium In addition, thermal mixing plate design technology is difficult to achieve accurate matching, often resulting in a limited amount of plate space savings. Therefore, hot mixing plate should not be used when the flow rate of hot and cold medium is too large. Third, the use of asymmetric type plate heat exchanger The symmetrical plate heat exchanger is composed of plate with the same corrugated geometrical structure on both sides of the plate, forming a plate heat exchanger with equal cross-sectional area of hot and cold runner circulation. According to the heat transfer characteristics and pressure drop requirements of the hot and cold fluid, the asymmetric (unequal cross-sectional area type) plate heat exchanger changes the geometric structure of the two sides of the plate, forming the plate heat exchanger with different cross-sectional area of the hot and cold runner, and the angle lone l diameter on the side of the wide runner is larger. The heat transfer coefficient of asymmetric plate heat exchanger decreases slightly, and the pressure drop decreases greatly. When the flow rate of hot and cold media is relatively large, the use of asymmetric single process than the use of symmetrical single-process plate heat exchanger can reduce the plate area of 15% 3o%.

The Dragon Boat Festival, originated in China, is a festival which originally the ancient people choose an auspicious day to worship the ancestors of the dragon. Because of the legend of the warring states period, Qu Yuan, a poet of the State of Chu, in the Dragon Boat Festival holding a stone jumped into the miluo river suicide, later people also take the Dragon Boat Festival to commemorate Qu Yuan. There are many customs in the Dragon Boat Festival, such as eating zongzi: the fillings of zongzi vary according to different regions. The north people like eating sweet zongzi and the south people like eating salty zongzi; Dragon boat racing is a kind of collective rowing competition. In the past, it was often used to pray for blessings, good weather, dispel evils and all will be best. Hang mugwort, it can drive away evil diseases and mosquitoes. Different regions have different customs of celebrating the Dragon Boat Festival, but all express people's good wishes.

We can produce different models of heat exchanger plate based on plate sample. Now we have over 200 models of heat exchanger plate mould. The various of plate models enable us supply to clients for different applications. We update our mould list every year. Welcome to visit our factory for better understanding our capacity

Work is a boat, performance is a sail, home is a harbour, festivals are the shore, wash away the dust, open a smiling face, welcome happy every day! Wish you a happy May Day!

The full-automatic heat exchange unit produced by us adopts S7-200smart series PLC which is applied in Siemens industrial control as the core control component. The temperature regulation, constant pressure water supply, circulating pump frequency conversion and flow collection are all controlled by PLC. The color LCD touch screen is used as the display unit, which is eye-catching, intuitive and easy to control and operate. The make-up pump adopts the frequency conversion constant pressure control mode and is designed with the function of overpressure water release. It can control the water releasing solenoid valve to release the pressure once the system is over pressured.

1. Design selection: Before production and processing, we need to select the heat exchanger, mainly to determine the plate type of the heat exchanger. 2, sheet processing: After selecting the type of sheet, the sheet processing is required, mainly by pressing the corresponding corrugation on the sheet by the stamping process. It should be noted that the sheet pressing must be formed once to ensure the quality of the sheet. 3. Assemble the plate heat exchanger: wipe the parts cleanly, wipe the residual glue in the groove before the sealing gasket and the groove are bonded, apply the synthetic resin adhesive to the plate, and then press the sealing gasket. The plates should be superimposed by 180° superposition. No misplacement is allowed. The clamping bolts should be tightened until the length of the bundle reaches the calculated size. 4. Stamping and setting: The installed plates are stamped so that the plates and the bonding materials are in full contact between the layers. 5. Welding process: According to different requirements of customers, different types of interfaces and accessory parts are welded to the plate heat exchanger. 6. Leak detection and pressure test: Pump the plate heat exchanger to a vacuum state for leak detection. The leak-tested plate heat exchanger needs to accept the pressure test higher than the customer's requirements. The inspection method is generally nitrogen pressure, and then put it into the water tank to check whether it is leaking. 7. Drying and packaging: After passing the high standard inspection, the qualified products are dried to remove moisture and impurities, and finally packaged. The above is the production process of the plate heat exchanger explained by the manufacturer. I hope that after reading this article, everyone knows more about the plate heat exchanger.

The goods for Russian customer are ready for Shipment

Plate Heat exchanger is a new type of high efficiency heat exchanger which is stacked by a series of metal pieces with certain corrugated shape. Thin rectangular channels are formed between various plates, and heat is exchanged through half slices. The type of plate heat exchanger mainly has frame type (detachable type) and brazing type two categories, the plate form mainly has the glyph corrugated plate, the horizontal straight corrugated plate and the tumor-shaped plate three kinds. The following aspects should be considered in the manufacture of plate heat exchangers: First, heat transfer area: is the heat change effect to meet the requirements. Second, the cost aspect: in general, we use the spiral plate heat exchanger because the manufacturing process is more complex than the plate, so in the site is small, heat exchange efficiency requirements are high place to use. And most of the use of stainless steel materials. Third, anti-corrosion performance: Like you said oil and water, if the water contains more chloride ions, then the corrosion is very strong, so you use galvanized plate, it is also appropriate. Note that when used in the future, it is best to clean some of the water treatment. This allows the heat exchanger to last a bit longer. Iv. strength: According to the use of pressure to determine, in general, there is no problem.

First, 904L, sus890l type stainless steel: This is a combination of price and corrosion resistance of the cost-effective austenitic stainless steel, its corrosion resistance, especially suitable for the general sulfuric acid, phosphoric acid and other acids and halogenated (including cl-, f-). Because of the high content of CR, Ni and Mo, it has good resistance to stress corrosion, pitting and gap corrosion. Applicable conditions in chlorine-containing media. Second, 254 SMO advanced Stainless Steel: By increasing the MO content of the 316 type of improved ultra-low carbon advanced stainless steel, with excellent resistance to chloride pitting and gap corrosion performance, suitable for the use of 316 type of saline, inorganic acid and other media. Third, titanium: non-alloyed titanium, light weight, density of 4.51, can naturally produce passivation protective film (Ti2o3), and if destroyed, with "self-healing", so corrosion resistance than stainless steel, is suitable for chlorine containing medium (cl-concentration >200mg/l, temperature ≤130℃) typical materials. In seawater and other chloride (such as CACL2) solutions of no more than 120 ℃, they are not actually corroded. In general, it can be used for seawater below 135 ℃ and for various concentrations of brine (NaCl) under 165 ℃. Titanium in organic acids below the boiling point (such as concentrated nitric acid, concentrated carbonate, etc.) and dilute lye, corrosion resistance is also good. The corrosion resistance of titanium in H2SO4, HCl, HF and Wang Shui is poor. In the high temperature (more than 120 ℃) of certain concentrated chloride solution (such as PH>7, chloride concentration >200mg/l wastewater), may also cause gap corrosion or stress corrosion. At this time, titanium-palladium alloys should be selected. Four, Hastelloy C-276: With good corrosion resistance: almost unaffected by cl-; excellent corrosion resistance to various concentrations of sulfuric acid, is one of the few materials that can be used for hot-concentrated sulfuric acid; widely used in organic acids (such as formic acid, acetic acid), high temperature HF acid and a certain concentration of hydrochloric acid (<40%), phosphoric acid ( ≤50%); chloride, fluoride and organic solvents (e.g. methanol, ethanol).

1. When chemical cleaning, the solution should maintain a certain flow rate, generally 0.8~1.2m/s. Its purpose is to increase the degree of turbulence of the solution. 2. Different chemical cleaning fluids should be used for different dirt. In addition to the often used diluted soda solution, 5% nitrate solution can be used for scale. The scale generated in soda production can be used in 5% hydrochloric acid solution. However, chemical lotions that corrode the plate shall not be used. 3. Mechanical (physical) cleaning is not allowed to use carbon steel brush scrubbing stainless steel sheet, so as not to accelerate the corrosion of the plate. At the same time can not make the sheet surface scratches, deformation and so on. 4. After cleaning the plate to rinse clean and dry with water, when placed should prevent the plate deformation.

Keeping the plate clean is one of the important conditions to maintain the high heat transfer coefficient of plate heat exchanger. In the plate, the medium is moving along the narrow winding runner, even if the production of a less thick scale layer, will also cause changes in the flow channel, significantly affect the movement of the fluid, so that the pressure drop increases, the heat transfer coefficient decreases, for example, a sugar factory in the heating using plate heat exchanger, because two times the water is not well treated, The runner is blocked for only two months during use and cannot continue to operate. First, chemical cleaning method: This method is to circulate a chemical solution through the heat exchanger, so that the surface of the plate dirt dissolved, discharged. This method does not need to disassemble the heat exchanger, simplifies the cleaning process, but also reduces the degree of labor of cleaning. Because the ripple of the plate can promote the severe turbulence of the cleaning liquid, which is beneficial to the dissolution of the scale layer, the chemical cleaning method is a relatively ideal method. Second, the comprehensive cleaning method: for the dirt layer is relatively hard and thicker situation, the simple use of one of the above methods are difficult to clean. The comprehensive method is to soften the scale layer with chemical cleaning method, and then use mechanical (physical) cleaning method to remove the scale layer, in order to keep the sheet clean and clean. Third, mechanical (physical) Cleaning method: This method is the plate after the use of a brush for manual washing, so as to clear the surface of the plate dirt purposes. Although this method is relatively direct, but the harder, thicker scale layer, not easy to clean.

1.BR Detachable plate heat exchanger-high heat transfer efficiency, small resistance, a multi-use machine, safe and reliable use. 2.HBR fully welded plate heat exchanger-high heat exchange efficiency, its seal does not use elastic non-metallic materials, so it can be applied to the medium temperature of ≤400℃, pressure ≤3.0mpa work occasions, safe use cycle is long, low maintenance costs, easy to clean. 3.HBRM-This series is through the scientific module combination theory, the HBR, HBRG, the two series of products to combine, with high temperature resistance, high pressure resistance, heat efficiency, long life, corrosion resistance and so on. 4.HBRG Improved plate heat exchanger-as HBR expansion type, novel structure, beautiful, its function in addition to the same as the HBR type, but also increased the import head flange, can be disassembly and washing, its heat transfer effect, service life than the tubular heat exchanger 3 times times higher. 5.HBRK plate and shell plate heat exchanger-high pressure resistance, large flow rate, small resistance, beautiful appearance, compact size, safe and reliable and plate can be chemical cleaning, mechanical cleaning and other characteristics.