1、 Overview of plate heat exchanger:
| Plate heat exchanger is a new type of high-efficiency energy-saving heat exchanger. TEG plate heat exchanger has been widely used in metallurgy, petroleum, chemical industry, mining, machinery, power, food, medicine, light textile, paper-making, shipping, marine development and other industrial fields; in recent years, it has been widely used in urban central heating and cogeneration industry. The plate heat exchanger of our company has absorbed and adopted the advanced technology and experience of the same industry at home and abroad, and continuously carried out product transformation and technical update; developed and produced new plate structure and gasket materials, which improved the use pressure, temperature and corrosion resistance of plate heat exchanger, further expanded the application scope of plate heat exchanger, expanded the applicability of products and expanded the applicability of products The product quality has been greatly improved.
Plate and plate heat exchanger
1. Working principle
The heat transfer plate is composed of a heat transfer plate and a heat transfer plate, and the heat transfer plate is composed of a heat transfer plate and a heat transfer plate. The working medium flows through the narrow and tortuous channel formed by two adjacent heat transfer plates. The cold and hot media pass through each channel in turn, and there is a layer of heat transfer plate in the middle. The heat transfer process of cold and hot medium is actually the process of heat transfer from hot medium to cold medium. In this process, the hot medium with higher temperature will transfer the heat energy to the cold medium with lower temperature through the heat transfer plate, and the hot medium with higher temperature will be cooled and the heat energy will be reduced; the cold medium with lower temperature will be heated and the heat energy will be increased. The requirements of thermal process can be realized by heat transfer.
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1. Fixed pressing plate 2. Connecting port 3. Sealing gasket 4. Plate 5. Movable pressing plate 6. Upper beam part 7. Lower beam 8. Clamping bolt 9. Pillar
2. Characteristics of plate heat exchanger of our company
The plate heat exchanger belongs to the plate heat exchanger made of plates on the heat transfer surface, which is different from the tubular heat exchanger made of tubes on the heat transfer surface. The characteristic is that the plate used as the heat transfer surface is a flat plate with various concave and convex stripes. When the fluid flows through the plate, the disturbance will occur, which will make the boundary layer thinner and cause turbulence, so as to obtain higher heat transfer efficiency. Compared with the shell and tube heat exchanger, it has the characteristics of high heat transfer efficiency, compact structure, light weight, and so on. Because the fluid in the heat exchanger can be paralleled, countercurrent and cross flow, and the plate can be increased or decreased according to the heat transfer area, so it has strong adaptability.
BR, BB series plate heat exchangers of our company are welcomed by users in various industries for their compact structure, high heat transfer efficiency, flexible operation, convenient maintenance and long service life.
(1) structural characteristics of BR plate
The new generation plate heat exchanger products developed by our company adopt computer optimization design and computer-aided manufacturing technology, and carry out computer simulation and selection for common working conditions. In practice, a large number of actual operating condition parameters have been accumulated, and the computer simulation model selection software has been constantly updated and optimized. The selection results are true, reliable and suitable for the actual operation conditions.
First class positioning structure in the world: five point positioning form, high accuracy of repeated positioning.
(2) diversion area: expand the diversion angle, increase and reasonably distribute the local flow cross-section area of the diversion area, and reduce the resistance drop of the medium flowing through the diversion area.
(3) diversion area: the new type of "chocolate" diversion structure has uniform and smooth diversion. The "dead zone" of flow velocity is removed by uniform distribution of flow velocity, thus avoiding corrosion caused by dirt accumulation and improving the utilization rate of heat transfer area.
(4) heat exchange zone:
Unique non stick sealing gasket structure, strong versatility;
The unique sealing groove structure strengthens the overall rigidity of the plate;
A large number of actual operating parameters have been accumulated, and the computer optimization design has been adopted to simulate the "ripple angle of heat exchange zone" which is very suitable for China's national conditions.