CN108571908A - Plate heat exchanger - Google Patents

Abstract

The present invention relates to a kind of plate heat exchangers to be connected with the pillar of support activity end plate if being evenly equipped with dry plate heat exchange plate side by side between fixed front end-plate and movable end plate on movable end plate；The upper end of heat exchange plate is equipped with top guide bar, lower end is equipped with lower guide rod, the fixed front end-plate, heat exchange plate and movable end plate are fastenedly connected by fishbolt, fixed front end-plate and heat exchange plate upper end are equipped with the hot fluid inlet pipe being arranged in juxtaposition and cold fluid outlet pipe, fixed front end-plate and heat exchange plate lower end are equipped with the hot fluid outlet ports pipe being arranged in juxtaposition and cold fluid inlet pipe, and hot fluid inlet pipe, cold fluid outlet pipe, hot fluid outlet ports pipe and cold fluid inlet pipe can move corresponding connecting hole along fixed front end-plate and heat exchange plate, heat exchanger plates block number mesh when heat exchange is adjusted by the position of mobile hot fluid and cold fluid inlet/outlet pipe, and then change heat exchange area, achieve the purpose that change heat exchange amount.

Description

Plate heat exchanger

technical field

The invention relates to a heat exchanger, in particular to a plate heat exchanger.

Background technique

The plate heat exchanger is a high-efficiency heat exchanger composed of a series of metal sheets with a certain corrugated shape. A channel of a certain shape is formed between various plates. Through the plates, the hot fluid transfers part of the heat to the cold fluid. . Plate heat exchanger, as a kind of thermal power mechanical equipment with excellent heat transfer performance, is widely used in many fields with energy conversion process. The continuous expansion of its application range requires more in-depth research on it. Once most of the existing plate heat exchangers are processed and cast, it is impossible to adjust the amount of heat exchange by changing the number of heat exchange plates, while a small part of detachable plate heat exchangers can change the number of heat exchange plates. However, when they change the number of heat exchange plates, they need to suspend the entire system, manually disassemble, increase or decrease the number of plates, which will bring economic losses, and the number of plates cannot be adjusted at any time.

Contents of the invention

The technical problem to be solved in the present invention is to solve the problem that the above-mentioned existing plate heat exchanger cannot adjust the number of heat exchange plates or needs to consume manpower and lose money to dismantle the number of heat exchange plates in the heat exchanger, and provides a method that can not be adjusted. It is necessary to suspend the operation of the system, and the number of heat exchange plates can be adjusted at any time to achieve a new type of plate heat exchanger that can adjust the amount of heat exchange.

The technical solution used in the present invention to solve the problems of the prior art is: a plate heat exchanger, including a fixed front end plate, a movable rear end plate, and heat exchange plates, and the fixed front end plate and the movable rear end plate are arranged side by side. There are several heat exchange plates, and the movable rear end plate is connected with a pillar supporting the movable rear end plate; the upper end of the heat exchange plate is equipped with an upper guide rod, and the lower end is equipped with a lower guide rod, and the fixed front end plate 1. The heat exchange plate and the movable rear end plate are fastened and connected by clamping bolts. The fixed front end plate and the upper end of the heat exchange plate are provided with hot fluid inlet pipes and cold fluid outlet pipes arranged side by side. The fixed front end plate and the upper end of the heat exchange plate are arranged side by side. The lower end of the heat exchange plate is provided with a hot fluid outlet pipe and a cold fluid inlet pipe arranged side by side, and the hot fluid inlet pipe, the cold fluid outlet pipe, the hot fluid outlet pipe and the cold fluid inlet pipe can be arranged along the fixed front end plate and the heat exchange plate. The corresponding connection holes are moved, and the number of heat exchange plates during heat exchange is adjusted by moving the positions of the hot fluid and cold fluid inlet and outlet pipes, thereby changing the heat exchange area and achieving the purpose of changing the heat exchange amount.

The distance that the hot fluid inlet pipe, the cold fluid outlet pipe, the hot fluid outlet pipe and the cold fluid inlet pipe move along the corresponding connecting holes on the heat exchange plates is an even multiple of the center distance between the two heat exchange plates.

The heat exchange plate includes a diversion area and a heat exchange area. The hot fluid enters the heat exchange plate from the hot fluid inlet pipe, flows from top to bottom, and flows out from the hot fluid outlet pipe after passing through the diversion area and the heat exchange area. , while the cold fluid enters the heat exchange plate from the cold fluid inlet pipe, flows from bottom to top, passes through the diversion area and the heat exchange area, and then flows out from the cold fluid outlet pipe.

Compared with the prior art, the beneficial effect of the present invention is that the present invention can change the number of heat exchange plates used for heat exchange at any time to achieve the purpose of changing the amount of heat exchange without suspending the operation of the system, and the present invention can improve efficiency, Save time, simple structure.

Description of drawings

Fig. 1 is the structural representation of plate heat exchanger of the present invention;

Fig. 2 is a schematic diagram of the working state of the plate heat exchanger of the present invention;

Fig. 3 is a schematic diagram of the second working state of the plate heat exchanger of the present invention;

Fig. 4 is a schematic diagram of the structure of the heat exchange plates.

Detailed ways

The present invention will be described in detail below in conjunction with the system schematic diagram shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

The present invention will be further described in conjunction with the accompanying drawings. As shown in Figure 1, the present invention is a new type of plate heat exchanger, including a fixed front end plate 1 and a movable rear end plate 2, and the fixed front end plate 1 and the movable rear end plate A number of heat exchange plates 3 are arranged side by side between the two, and the movable rear end plate 2 is connected with a pillar 6 supporting the movable rear end plate 2; the upper and lower ends of the heat exchange plates 3 are correspondingly installed with upper guide rods 4 and The lower guide rod 5, and the clamping bolt 7 that fastens and connects the fixed front end plate 1, the heat exchange plate 3 and the movable rear end plate 2; The hot fluid inlet pipe 8 and the cold fluid outlet pipe 9 are fixed to the front end plate 1, and the lower end of the heat exchange plate 3 is provided with a hot fluid outlet pipe 10 and a cold fluid inlet pipe 11 arranged side by side.

FIG. 4 shows the heat exchange plate 3 used, including a sealing gasket 12 , a flow guide area 13 and a heat exchange area 14 . The working principle of the plate heat exchanger is that the thermal fluid enters the heat exchange plate 3 from the thermal fluid inlet pipe 8, flows from top to bottom, passes through the diversion area 13 and the heat exchange area 14, and then flows out from the thermal fluid outlet pipe 10. The cold fluid enters the heat exchange plate from the cold fluid inlet pipe 11 , flows from bottom to top, passes through the diversion area 13 and the heat exchange area 14 , and flows out from the cold fluid outlet pipe 9 . If the distance between the centers of every two boards is set to 1/2L, the positions of the four pipes can be moved in the same direction at the same time during work, and the moving distance is an integer multiple of L, that is, an even multiple of the distance between the centers of the two boards.

As shown in Figure 2 and Figure 3, it is a working diagram of the plate heat exchanger when the positions of the four tubes are moved in the same direction at the same time during operation, and the moving distances are L and 2L respectively. When the plate heat exchanger is working, the positions of the inlet and outlet of the hot fluid and the cold fluid are moved in the same direction at the same time, and the moving distance is an even multiple of the distance between the centers of the two heat exchange plates 3. , to achieve the effect of changing the number of heat exchange plates and the heat exchange area, and then the heat exchange amount can be changed.

It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for feasible implementations of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation or implementation that does not depart from the technical spirit of the present invention All changes should be included within the protection scope of the present invention.

Claims (3)

1. a kind of plate heat exchanger, including fixed front end-plate (1), movable end plate (2), heat exchange plate (3), the fixed front end Plate (1) and movable end plate (2) if between be evenly equipped with dry plate heat exchange plate (3) side by side, be connected with support on movable end plate (2) The pillar (6) of movable end plate (2)；The upper end of the heat exchange plate (3) is equipped with top guide bar (4), and lower end is equipped with lower guide rod (5), The fixed front end-plate (1), heat exchange plate (3) and movable end plate (2) are fastenedly connected by fishbolt (7), and feature exists In：The fixed front end-plate (1) and heat exchange plate (3) upper end are equipped with the hot fluid inlet pipe (8) being arranged in juxtaposition and cold fluid goes out Mouthful pipe (9), the fixed front end-plate (1) and heat exchange plate (3) lower end are equipped with the hot fluid outlet ports pipe (10) that is arranged in juxtaposition and cold Fluid inlet tubes (11), and hot fluid inlet pipe (8), cold fluid outlet pipe (9), hot fluid outlet ports pipe (10) and cold fluid inlet Managing (11) can move corresponding connecting hole along fixed front end-plate (1) and heat exchange plate (3), pass through mobile hot fluid and cold fluid The position of inlet/outlet pipe adjusts heat exchanger plates block number mesh when heat exchange, and then changes heat exchange area, reaches the mesh for changing heat exchange amount 's.

2. plate heat exchanger according to claim 1, it is characterised in that：The hot fluid inlet pipe (8), cold fluid outlet Manage (9), hot fluid outlet ports pipe (10) and cold fluid inlet pipe (11) distance that corresponding connecting hole moves along heat exchange plate (3) The even-multiple of centre distance between two pieces of heat exchange plates (3).

3. plate heat exchanger according to claim 1, it is characterised in that：The heat exchange plate (3) include guiding region (13), Heat transfer zone (14), hot fluid enter heat exchange plate (3) from hot fluid inlet pipe (8), flow from top to bottom, by guiding region (13) After heat transfer zone (14), flowed out from hot fluid outlet ports pipe (10), and cold fluid enters heat exchange plate from cold fluid inlet pipe (11), It flows, behind guiding region (13) and heat transfer zone (14), is flowed out from cold fluid outlet pipe (9) from the bottom up.