High-pressure test fixing plate for plate-frame all-welded heat exchanger

Abstract

The utility model discloses a plate-frame all-welded heat exchanger high-pressure test fixing plate, which relates to the field of high-pressure test fixing plates and comprises a heat exchanger main body, plate bodies for enhancing the strength of the heat exchanger main body are movably arranged at two ends of the heat exchanger main body, and connecting blocks are movably arranged on two sides of two ends of the heat exchanger main body. The heat exchanger comprises a heat exchanger main body, a connecting block is arranged in the heat exchanger main body, one surface of the connecting block is fixedly connected with one surface of the corresponding plate body, two sides of two ends of the heat exchanger main body are respectively provided with an inner groove, and two corresponding sides of each inner groove are respectively provided with a clamping inclined surface. When the plate body is installed, only the connecting block needs to be installed in the rectangular groove, the disassembly and assembly mode is simple, the plate body can be quickly disassembled and assembled, and the high-voltage test time is saved.

Description

Technical Field

[0001] The utility model relates to the field of high-pressure test fixing plates, in particular to a high-pressure test fixing plate for a plate-frame fully welded heat exchanger. Background Art

[0002] The plate-and-frame fully welded heat exchanger is an efficient, compact, and reliable heat exchange device. Originating from the plate heat exchanger, the plate-and-frame fully welded heat exchanger eliminates the sealing gaskets and joints found in traditional heat exchangers through full welding technology, improving the reliability and pressure resistance of the equipment. In recent years, with the application of material technology, design optimization, and advanced manufacturing technology, the fully welded heat exchanger has continued to develop to meet the industrial application demand for higher heat exchange efficiency and smaller space occupation.

[0003] The plate-frame fully welded heat exchanger high-pressure test fixing plate disclosed by the search application number 202220972983.5 includes a heat exchanger body and a plate body. The number of the plate bodies is two groups, and the two groups of plate bodies are symmetrically fixed on both sides of the heat exchanger body. The inside of the plate body is symmetrically provided with waist-shaped grooves. The shape of the plate body is I-shaped. The material of the plate body is steel plate. The thickness of the plate body is 45mm. The outer surface of the plate body is symmetrically provided with grooves. Observation holes are provided inside the two groups of grooves. This utility model, through the function of the high-pressure test fixing plate, can fully ensure the structural strength of the heat exchanger during the high-pressure test of the heat exchanger, ensure that the structure of the heat exchanger will not be deformed during the test, and facilitate the observation of the test conditions of the heat exchanger plates, thereby avoiding damage to the product during the high-pressure test, ensuring the quality of the product after the pressure test, and eliminating the loss of the product during the pressure test, which has strong economic benefits.

[0004] The plate in the above patent is mainly connected to the heat exchanger body by bolts during use. In order to ensure the connection strength between the heat exchanger body and the plate, a large number of bolts are required for fixing. Moreover, after the high-pressure test is completed, the plate needs to be removed. However, due to the large number of fixing bolts, disassembly and assembly are too cumbersome.

[0005] Therefore, it is necessary to propose a high-pressure test fixing plate for a plate-and-frame fully welded heat exchanger to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a high-pressure test fixing plate for a fully welded plate-frame heat exchanger, so as to solve the problem that many bolts are required when the plate body is disassembled and assembled.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a plate-frame fully welded heat exchanger high-pressure test fixing plate, comprising a heat exchanger body, both ends of which are movably provided with plates for reinforcing the strength of the heat exchanger body, and both ends of the heat exchanger body are movably provided with connecting blocks, one side of the connecting blocks being fixedly connected to one side of the corresponding plate body;

[0008] Both ends of the heat exchanger body are provided with inner grooves, and both sides corresponding to the inner grooves are provided with engaging inclined surfaces;

[0009] A snap-fit ​​block is movably provided inside the inner groove, and the snap-fit ​​block is snap-fitted into the inner groove via a snap-fit ​​slope.

[0010] The connecting block moves on one side of the locking block.

[0011] Preferably, a rectangular groove is provided on a side of the engaging block corresponding to the plate body, and the connecting block moves inside the engaging block through the rectangular groove.

[0012] Preferably, a blocking block is provided at the lower inner end of the rectangular groove, the blocking block is hemispherical, and the blocking block is connected to the locking block by gluing.

[0013] Preferably, the lower end of the engaging inclined surface is arranged to be inclined inward, and the outer shape of the engaging block is arranged to fit the shape of the inner wall of the inner groove.

[0014] Preferably, the length of the inner groove is equal to the length of the engaging block.

[0015] Preferably, the outer side of the blocking block abuts against the inner wall of the rectangular groove, and the blocking block is an elastic member.

[0016] The technical effects and advantages of this utility model are:

[0017] 1. When testing the heat exchanger body, remove the frame plate and place the plate body in the rectangular groove on the clamping block through the connecting block. When installing the plate body, you only need to install the connecting block inside the rectangular groove. The disassembly and assembly method is simple and the plate body can be quickly disassembled and assembled, saving high-voltage testing time.

[0018] 2. By setting the snap-fit ​​block, the size of the holes on the heat exchanger body is reduced, further increasing the strength of the heat exchanger body;

[0019] 3. By setting the engaging block and the inner groove, before testing the heat exchanger body, the connecting block can be selectively used according to the strength of the heat exchanger test. When the pressure required to test the heat exchanger body is relatively high, the connecting block can be controlled to engage inside the rectangular groove to increase the strength of the inner groove. When the test pressure is relatively low, the connecting block can be controlled to engage inside the inner groove to relatively reduce the strength of the inner groove, thereby increasing the replacement speed of the plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a first-perspective structural diagram of the high-pressure test fixing plate of the fully welded plate-frame heat exchanger of the utility model.

[0021] Figure 2This is a schematic diagram of the separation structure of the plate body and the heat exchanger main body of the utility model.

[0022] Figure 3 This is a structural schematic diagram from another perspective of the high-pressure test fixing plate of the plate-frame fully welded heat exchanger of the utility model.

[0023] Figure 4 For this utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0024] Figure 5 This is a schematic diagram of the inner groove structure of the utility model.

[0025] In the figure: 1. heat exchanger body; 2. plate body; 3. inner groove; 4. snap-fit ​​block; 5. connecting block; 6. blocking block; 7. snap-fit ​​slope. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The utility model provides Figure 1 - Figure 5 The plate-and-frame fully welded heat exchanger high-pressure test fixing plate shown includes a heat exchanger body 1. The heat exchanger body 1 is the main component of the plate-and-frame fully welded heat exchanger and is a prior art and will not be described in detail here. After the heat exchanger body 1 is produced, the plate-and-frame fully welded heat exchanger needs to remove two frame plates when undergoing a high-pressure water pressure test to observe the pressure test leakage of the plates. However, this operation reduces the overall structural strength of the heat exchanger, making the heat exchanger unable to withstand the high-pressure test. As a result, the heat exchanger is easily deformed during the high-pressure test, damaging the product structure and affecting the subsequent assembly of the frame plates, or even failing to install them, causing product damage and scrapping, resulting in economic losses. If the high-pressure test is performed without removing the frame plates, although the heat exchanger can withstand the high-pressure test, the leakage of the plates cannot be observed, which will render the test meaningless. Plates 2 are movably provided at both ends of the heat exchanger body 1 to strengthen the strength of the heat exchanger body 1 itself. Therefore, the strength is increased by using two plates 2. The plate 2 is a prior art and will not be described in detail here.

[0028] Both ends of the heat exchanger body 1 are movably provided with connecting blocks 5 on both sides, and one side of the connecting block 5 is fixedly connected to the corresponding side of the plate body 2. Inner grooves 3 are provided on both sides of the heat exchanger body 1, and the corresponding sides of the inner groove 3 are provided with engaging inclined surfaces 7. A engaging block 4 is movably provided on the inner side of the inner groove 3. The connecting block 5 is movable on one side of the engaging block 4. A rectangular groove is provided on the side of the engaging block 4 corresponding to the plate body 2. The connecting block 5 is movable on the inner side of the engaging block 4 through the rectangular groove. There is a transition fit between the connecting block 5 and the rectangular groove to ensure that the connecting block 5 is fixed when it is inside the rectangular groove, and the engaging block 4 is engaged with the inner groove 3 through the engaging inclined surface 7.

[0029] When testing the heat exchanger body 1, the frame plate is removed and the plate body 2 is placed in the rectangular groove on the locking block 4 through the connecting block 5. The setting of the locking block 4 can reduce the size of the hole opened on the heat exchanger body 1. When installing the plate body 2, it is only necessary to install the connecting block 5 inside the rectangular groove. The disassembly and assembly method is simple, and the plate body 2 can be quickly disassembled and assembled, thereby saving high-voltage testing time.

[0030] The length of the inner groove 3 is equal to the length of the locking block 4, ensuring that when the locking block 4 is on the inner side of the inner groove 3, the locking block 4 can fully support the inner groove 3, the lower end of the locking slope 7 is inclined inward, and the outer shape of the locking block 4 fits the shape of the inner wall of the inner groove 3.

[0031] A blocking block 6 is provided at the lower end of the inner side of the rectangular groove. The blocking block 6 is hemispherical in shape. The blocking block 6 is connected to the locking block 4 by gluing. The outer side of the blocking block 6 abuts against the inner wall of the rectangular groove. The blocking block 6 is an elastic part. Through the setting of the blocking block 6, the connecting block 5 can be prevented from falling when installing the connecting block 5.

[0032] By setting the snap-fit ​​block 4 and the inner groove 3, before the heat exchanger body 1 is inspected, the connecting block 5 can be selectively used according to the strength of the heat exchanger inspection. The connecting block 5 has two sizes, the first one is snap-fitted inside the rectangular groove, and the second one is snap-fitted inside the inner groove 3.

[0033] When the pressure required to test the heat exchanger body 1 is relatively high, the connecting block 5 can be controlled to be engaged inside the rectangular groove to increase the strength of the inner groove 3. When the test pressure is relatively small, the connecting block 5 is controlled to be engaged inside the inner groove 3 to relatively reduce the strength of the inner groove 3, thereby increasing the replacement speed of the plate body 2.

Claims

1. A plate-frame fully welded heat exchanger high-pressure test fixing plate, comprising a heat exchanger body (1), characterized in that: Both ends of the heat exchanger body (1) are movably provided with plates (2) for reinforcing the strength of the heat exchanger body (1); both ends of the heat exchanger body (1) are movably provided with connecting blocks (5); one side of the connecting block (5) is fixedly connected to the other side of the corresponding plate (2); Both ends of the heat exchanger body (1) are provided with inner grooves (3), and both corresponding sides of the inner groove (3) are provided with engaging inclined surfaces (7); A snap-fit ​​block (4) is movably provided inside the inner groove (3), and the snap-fit ​​block (4) is snap-fitted to the inner groove (3) via a snap-fit ​​inclined surface (7); The connecting block (5) is movable on one side of the locking block (4).

2. The plate-frame fully welded heat exchanger high-pressure test fixing plate according to claim 1, characterized in that: A rectangular groove is provided on one side of the engaging block (4) corresponding to the plate body (2), and the connecting block (5) is movable inside the engaging block (4) through the rectangular groove.

3. The plate-frame fully welded heat exchanger high-pressure test fixing plate according to claim 2, characterized in that: A blocking block (6) is provided at the lower end of the inner side of the rectangular groove. The blocking block (6) is arranged in a hemispherical shape. The blocking block (6) is connected to the locking block (4) by gluing.

4. The plate-frame fully welded heat exchanger high-pressure test fixing plate according to claim 1, characterized in that: The lower end of the engaging inclined surface (7) is arranged to be inclined and inwardly buckled, and the outer shape of the engaging block (4) is arranged to fit the inner wall shape of the inner groove (3).

5. The plate-frame fully welded heat exchanger high-pressure test fixing plate according to claim 1, characterized in that: The length of the inner groove (3) is equal to the length of the engaging block (4).

6. The plate-frame fully welded heat exchanger high-pressure test fixing plate according to claim 3, characterized in that: The outer side of the blocking block (6) abuts against the inner wall of the rectangular groove, and the blocking block (6) is an elastic member.

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