Heat exchanger pressure test tool

Abstract

The utility model discloses a heat exchanger pressure test tool which comprises two groups of sealing plate assemblies, each sealing plate assembly comprises a right-angle sealing plate and an inner plate, and each right-angle sealing plate is provided with a first sealing plate and a second sealing plate which are perpendicular to each other; the inner plate is assembled in the right-angle sealing plate, the inner plate is vertically and hermetically assembled on the first sealing plate, and the inner plate and the second sealing plate are arranged in parallel; the right-angle sealing plate of one group of sealing plate assembly is connected with a pressure test mechanism. The pressure test tool equipment is specially designed for a specific plate heat exchanger, the two groups of sealing plate assemblies are simple in structural design, and the two groups of sealing plate assemblies are matched and are respectively and hermetically assembled at the inlet and outlet of the medium channel of the heat exchanger core body; the pressure test mechanism is used for carrying out sealing performance inspection and pressure bearing capacity detection on the medium channel and simulating reliability, durability and the like in the actual use process, and tool assembly and pressure test operation are very simple, convenient and effective.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger equipment process, in particular to a heat exchanger pressure testing tool. Background Art

[0002] Heat exchangers are equipment used for heat exchange between two fluid media. They are widely used in many industrial productions such as chemical, petroleum, and power, and they occupy an important position. Plate heat exchangers are mainly used for heat exchange between liquid and liquid, and between liquid and steam. They are made of a series of stacked metal sheets, and thin rectangular channels are formed between each metal sheet. Two media flow in adjacent channels to achieve heat exchange. There are two main designs for the flow of two media: parallel flow and diagonal flow. At present, no matter which design method is used, the operating principle of the two fluids flowing in their respective channels is to have openings at the four corners of each metal plate, and after assembling into a plate bundle, different fluid media are distributed in adjacent channels through the design of circulation between holes or sealing without circulation to finally achieve the heat exchange function. The existing corner hole design requires a large number of rubber sealing gaskets, and the corner holes need to be aligned during assembly. The manufacturing precision is high, and the number of plate bundles, the length and width of the plates are restricted. It is not suitable for heat exchange of large fluid media or assembly of large-area equipment.

[0003] In view of this, the applicant of this case conducted an in-depth study on the above-mentioned problems, and proposed a high-efficiency plate heat exchanger that overcomes the above-mentioned shortcomings through innovative structural design, and correspondingly proposed a heat exchanger pressure test tooling, which resulted in this case. Utility Model Content

[0004] The utility model aims to provide a heat exchanger pressure test tool, which is used for pressure testing of plate heat exchangers and has the characteristics of simple structure, simple assembly, convenient and effective pressure test operation, etc.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] A heat exchanger pressure test tool comprises two sets of sealing plate assemblies, wherein the sealing plate assemblies comprise right-angle sealing plates and inner plates, wherein the right-angle sealing plates comprise a first sealing plate and a second sealing plate which are arranged perpendicularly to each other; the inner plate is assembled in the right-angle sealing plate, the inner plate is vertically and sealingly assembled on the first sealing plate, and the inner plate is arranged parallel to the second sealing plate; a pressure test mechanism is connected to the right-angle sealing plates of one set of sealing plate assemblies.

[0007] The first sealing plate and the second sealing plate are both provided with bolt assemblies for locking and fixing.

[0008] The bolt assembly includes two groups which are symmetrically arranged up and down.

[0009] The pressure test mechanism includes a pressure test pump, a pressure gauge and a connecting pipe, wherein the pressure gauge is arranged on the connecting pipe; a joint is arranged on the right-angle sealing plate of the sealing plate assembly, one end of the connecting pipe is connected to the pressure test pump, and the other end is connected to the joint.

[0010] The pressure testing mechanism also includes a pressure sensor, which is arranged on the connecting pipe.

[0011] A pressure relief pipe is provided on the right-angle sealing plate of another group of sealing plate assemblies, and a valve switch is provided on the pressure relief pipe.

[0012] The inner plate is projected onto the space formed by the second sealing plate, and the corners of the space are provided with sealing members at positions corresponding to the first sealing plate, the second sealing plate and the inner plate.

[0013] After adopting the above scheme, the novel heat exchanger pressure test fixture has the following beneficial effects compared with the prior art: the novel heat exchanger is a pressure test fixture specially designed for the plate heat exchanger innovatively designed by the applicant, and its pressure test operation is performed by two sets of sealing plate assemblies, which are respectively sealed and assembled at the entrance and exit positions of the medium channel of the heat exchanger core, and the pressure test mechanism performs sealing performance inspection, pressure bearing capacity inspection, and reliability and durability inspections during simulated actual use on the medium channel. The two sets of sealing plate assemblies have a simple structural design, and the assembly and pressure test of the fixture are simple and effective. The heat exchanger core is a double medium channel set diagonally. After the pressure test of one medium channel is completed, the fixture can be disassembled and applied to the pressure test of the other medium channel, which is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the heat exchanger core corresponding to the new pressure test tooling;

[0015] Figure 2 It is a structural schematic diagram of the application of the new pressure test tooling on the heat exchanger.

[0016] Description of symbols

[0017] Second side plate 100, cover 101, extension plate 102, medium channel inlet 2031;

[0018] A medium channel outlet 2032, B medium channel inlet 3031, B medium channel outlet 3032;

[0019] Pressure test fixture 400, right-angle sealing plate 41, first sealing plate 411, second sealing plate 412, inner plate 42;

[0020] Pressure testing mechanism 43 , pressure gauge 431 , connecting pipe 432 , bolt assembly 44 , nut assembly 441 . DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] This case involves a heat exchanger pressure test fixture, the pressure test object of the pressure test fixture is Figure 1 The heat exchanger core shown in Figure 1 is a heat exchanger core. Figure 1 As shown, the heat exchanger core includes two side plates 100 and a heat exchange plate body stacked between the two side plates 100. The left and right sides formed between the two side plates 100 form a sealed cover 101 by sealing welding. The front and rear positions between the two side plates 100 form staggered dual medium channel inlets and outlets. Specifically, medium channel A and medium channel B are formed in the heat exchanger core. Figure 1 In the embodiment, the left side facing forward is the B medium channel entrance 3031, the right side facing forward is the A medium channel exit 2032, the left side of the rear end is the A medium channel entrance 2031, and the right side of the rear end is the B medium channel exit 3032. The A medium channel entrance 2031 and the A medium channel exit 2032 are arranged diagonally, and the B medium channel entrance 3031 and the B medium channel exit 3032 are arranged diagonally. The front and rear ends of the two side plates 100 extend outward to form two extension plates 102, respectively.

[0023] This application heat exchanger pressure test fixture 400, such as Figure 2 As shown, two sets of sealing plate assemblies are included, each set of sealing plate assemblies includes a right-angle sealing plate 41 and an inner plate 42. The right-angle sealing plate 41 has a first sealing plate 411 and a second sealing plate 412 arranged perpendicular to each other, and the first sealing plate 411 and the second sealing plate 412 can be arranged integrally or separately.

[0024] The inner plate 42 is assembled in the right-angle sealing plate 41, and the inner plate 42 is vertically and sealedly assembled on the first sealing plate 411, and the inner plate 42 is arranged parallel to the second sealing plate 42. The inner plate 42 is entirely accommodated in the right-angle sealing plate 41, and the inner plate 42 can be completely projected into the first sealing plate 411 and the second sealing plate 412.

[0025] The size relationship between the sealing plate assembly and the heat exchanger core is that the inner plate 42 is projected onto the space formed by the second sealing plate 412, and the side of the space opposite to the first side plate 411 is adapted to the medium channel inlet / outlet. Specifically, the length of the inner plate 42 is such that it can be tightly vertically embedded between the two extension plates 102, the plate surface size of the right-angle sealing plate 41 is such that it can be closely and closely attached to the right angle position of the two extension plates 102, and the distance between the inner plate 42 and the second side plate 412 is the width of the medium channel inlet / outlet.

[0026] A pressure test mechanism 43 is connected to the right-angled sealing plate 41 of one of the two sealing plate assemblies. When the pressure test fixture 400 is used for pressure test, the two sealing plate assemblies are first installed at the diagonal positions of the two extension plates 102 at both ends of the heat exchanger, and a closed pressure test space is formed between the two sealing plate assemblies and the two extension plates 102. Figure 2 As shown, the pressure test space formed by the front sealing plate assembly is communicated with the B medium channel inlet 3031, and the pressure test space formed by the sealing plate assembly arranged diagonally in the rear is communicated with the B medium channel outlet 3032. Then, the pressure test mechanism 43 is turned on to perform relevant tests.

[0027] This new type is a pressure test tooling equipment specially designed for a specific plate heat exchanger. The two sets of sealing plate components have a simple structural design, and the tooling assembly and pressure test operation are simple and effective. The pressure test operation is performed by the two sets of sealing plate components being assembled and sealed at the entrance and exit of the medium channel of the heat exchanger core. The pressure test mechanism 43 performs a sealing performance inspection, a pressure bearing capacity inspection, and simulates the reliability and durability of the medium channel during actual use. After the pressure test of one of the medium channels, it can be disassembled and assembled at the entrance and exit of the other medium channel for pressure test, such as Figure 2 After the pressure test of medium channel B is completed, the two sets of sealing plate assemblies are disassembled and installed diagonally at the entrance and exit of medium channel A for testing, which is highly practical.

[0028] Preferably, in order to facilitate the stability of the sealing plate assembly on the heat exchanger, that is, on the two extension plates 102, the first sealing plate 411 and the second sealing plate 412 are both provided with bolt assemblies 44 for locking and fixing. Further, the bolt assemblies 44 include two groups symmetrically arranged up and down, and a nut assembly 441 matched and locked with the bolt assemblies 44 can be fixed on the outer surface of the side plate 100.

[0029] Preferably, the pressure test mechanism 43 includes a pressure test pump (not shown in the figure), a pressure gauge 431 and a connecting pipe 432, and the pressure gauge 431 is arranged on the connecting pipe 432. A joint 413 is provided on the right-angle sealing plate 411 of the sealing plate assembly, and one end of the connecting pipe 432 is connected to the pressure test pump, and the other end is connected to the joint 413. The pressure is provided by the pressure test pump, and the pressure is passed into the pressure test space through the connecting pipe 432, and then enters the entire medium channel through the medium channel entrance. The pressure is displayed in real time by the pressure gauge 431. Furthermore, the pressure test mechanism 43 also includes a pressure sensor (not shown in the figure), which is arranged on the connecting pipe 432, and the pressure sensor is used to assist the pressure test detection.

[0030] Preferably, a pressure relief pipe (not shown in the figure) is provided on the right-angle sealing plate 411 of the other sealing plate assembly, and a valve switch (not shown in the figure) is provided on the pressure relief pipe. Such an arrangement is conducive to the pressure relief operation after the pressure test is completed.

[0031] Preferably, the inner plate 42 is projected onto the space formed by the second sealing plate 412, and the corners forming the space are provided with seals at positions corresponding to the first sealing plate 411, the second sealing plate 412 and the inner plate 42. Thus, the sealing of the pressure test space formed between the sealing plate assembly and the two extension plates 102 is improved by the seals, providing a guarantee for effective pressure testing.

[0032] The above description is only the preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims

1. A heat exchanger pressure test tool, characterized in that: It comprises two groups of sealing plate assemblies, which include a right-angle sealing plate and an inner plate. The right-angle sealing plate comprises a first sealing plate and a second sealing plate which are arranged perpendicularly to each other. The inner plate is assembled in the right-angle sealing plate, and the inner plate is vertically and sealingly assembled on the first sealing plate. The inner plate is arranged parallel to the second sealing plate. A pressure test mechanism is connected to the right-angle sealing plate of one group of sealing plate assemblies.

2. A heat exchanger pressure test tool as claimed in claim 1, characterized in that: The first sealing plate and the second sealing plate are both provided with bolt assemblies for locking and fixing.

3. A heat exchanger pressure test tool as claimed in claim 2, characterized in that: The bolt assembly includes two groups which are symmetrically arranged up and down.

4. A heat exchanger pressure test fixture according to claim 1, characterized in that: The pressure test mechanism includes a pressure test pump, a pressure gauge and a connecting pipe, wherein the pressure gauge is arranged on the connecting pipe; a joint is arranged on the right-angle sealing plate of the sealing plate assembly, one end of the connecting pipe is connected to the pressure test pump, and the other end is connected to the joint.

5. A heat exchanger pressure test fixture as claimed in claim 4, characterized in that: The pressure testing mechanism also includes a pressure sensor, which is arranged on the connecting pipe.

6. A heat exchanger pressure test tool as claimed in claim 1, characterized in that: A pressure relief pipe is provided on the right-angle sealing plate of another group of sealing plate assemblies, and a valve switch is provided on the pressure relief pipe.

7. The heat exchanger pressure test tool as claimed in claim 1, characterized in that: The inner plate is projected onto the space formed by the second sealing plate, and the corners of the space are provided with sealing members at positions corresponding to the first sealing plate, the second sealing plate and the inner plate.

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