Helium leak detection equipment for heat exchanger

Abstract

The utility model discloses a heat exchanger helium leak detection device which comprises a workbench, a gas storage tank arranged on the right side of the top of the workbench, and a leak detection assembly and a gas transmission assembly which are arranged above the workbench, supporting plates are symmetrically and fixedly connected to the bottom end face of the workbench, and a placement assembly is arranged on the workbench; two lifting blocks fixedly connected to the outer sides of the leak detection assembly and the gas transmission assembly respectively are symmetrically arranged in the frame plate, a moving assembly is arranged on the frame plate, the left ends of the leak detection assembly and the gas transmission assembly are fixedly connected with connecting rings, a hose is connected between the gas storage tank and the gas transmission assembly, and a second electric push rod is controlled to extend to drive the frame plate to move. The moving assembly on the frame plate drives the gas transmission assembly and the leakage detection assembly to move, so that the connecting ring is driven to be inserted into the interface, manual butt joint is not needed through the connection mode, manpower resources are saved, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of heat exchanger leak detection technology, and more specifically, to a heat exchanger helium leak detection device. Background Technology

[0002] A plate heat exchanger is a high-efficiency heat exchanger composed of a series of metal plates with a specific corrugated shape. Thin rectangular channels are formed between the plates, through which heat exchange occurs. Plate heat exchangers are ideal devices for liquid-liquid and liquid-vapor heat exchange. They feature high heat exchange efficiency, low heat loss, compact and lightweight structure, small footprint, wide application, and long service life. Before putting a plate heat exchanger into use, it is generally necessary to check for external leaks to prevent substandard plate heat exchangers from entering the market.

[0003] A search revealed that the publication (announcement) number CN214200545U discloses "a leakage detection device for a plate heat exchanger, which includes a front end plate, an interface group on the front end plate, two sets of interface groups arranged side by side, an interface group including two interfaces arranged sequentially from top to bottom, an installation plate on the interface, and a connecting component connecting the connection port and the installation plate, the connecting component being used to realize a detachable connection between the installation plate and the front end plate... This application has the effect of accurately detecting the external leakage of the plate heat exchanger." However, during the detection process, the detection device cannot automatically connect to the heat exchanger interface, requiring operators to fix and disassemble the installation plate to achieve the interface connection with the heat exchanger. This results in a waste of human resources and affects the efficiency of the detection.

[0004] To address the aforementioned issues, this application provides a helium leak detection device for heat exchangers. Utility Model Content

[0005] One objective of this application is to provide a helium leak detection device for a heat exchanger, comprising a workbench, a gas storage tank disposed on the top right side of the workbench, and a leak detection component and a gas delivery component disposed above the workbench. A support plate is symmetrically and fixedly connected to the bottom end of the workbench. A placement component is disposed on the workbench. A second electric push rod is fixedly connected to the outside of the gas storage tank. A frame plate is fixedly connected to the output end of the second electric push rod. The left ends of both the leak detection component and the gas delivery component penetrate the frame plate and extend to the left side of the frame plate. Two lifting blocks are symmetrically disposed inside the frame plate and respectively fixedly connected to the outside of the leak detection component and the gas delivery component. A moving component is disposed on the frame plate. A connecting ring is fixedly connected to the left end of both the leak detection component and the gas delivery component. A flexible hose connects the gas storage tank and the gas delivery component.

[0006] Furthermore, the placement assembly includes a groove formed on the top left side of the workbench, a placement plate is disposed inside the groove, and a first electric push rod is fixedly connected to the bottom left side of the workbench. The output end of the first electric push rod passes through the inner cavity of the workbench and is fixedly connected to the bottom end of the placement plate.

[0007] Furthermore, a backing plate is fixedly connected to the left side of the top surface of the workbench, and the left end face of the placement plate is slidably connected to the right end face of the backing plate.

[0008] Furthermore, the moving component includes a sliding groove formed in the inner wall of the frame plate, a bidirectional lead screw is rotatably connected inside the sliding groove, two sliding blocks are symmetrically slidably connected inside the sliding groove, and the two sliding blocks are threaded onto the outer side of the bidirectional lead screw. The sliding blocks and the lifting blocks are fixedly connected to opposite sides, and a motor for driving the bidirectional lead screw to rotate is fixedly connected to the top of the frame plate.

[0009] Furthermore, the surface of the frame plate is provided with sliding holes, and sliders are symmetrically slidably connected inside the sliding holes, and the sliders and the lifting block are fixedly connected to opposite sides.

[0010] Furthermore, multiple annular grooves are formed on the connecting ring, and annular sealing rings are fixedly connected to the bottom walls of the multiple annular grooves respectively.

[0011] Furthermore, a limiting slide plate is fixedly connected to the bottom end face of the frame plate, and the bottom end face of the limiting slide plate is slidably connected to the top end face of the workbench.

[0012] The beneficial effects of this application are:

[0013] 1. Control the extension of the second electric push rod to move the frame plate. The moving component on the frame plate moves the gas delivery component and the leak detection component, thereby causing the connecting ring to be inserted into the interface. This connection method eliminates the need for manual docking, saves manpower, and improves detection efficiency.

[0014] 2. Controlling the first electric push rod can adjust the height of the heat exchanger and control the motor to drive the bidirectional lead screw to rotate. The rotation of the bidirectional lead screw can cause the two sliding blocks inside the sliding groove to move relative to each other or towards each other, thereby driving the two lifting blocks to move relative to each other or towards each other, adjusting the distance between the gas supply component and the leak detection component so that the gas supply component and the leak detection component correspond to the two interfaces on the heat exchanger respectively.

[0015] 3. The design of multiple annular grooves of different diameters facilitates the connection of the connecting ring with interfaces of different diameters, thereby improving the applicability of the device. Attached Figure Description

[0016] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the overall structure of this application;

[0019] Figure 2 This is a partial structural diagram of this application;

[0020] Figure 3 For the purposes of this application Figure 2 Enlarged schematic diagram of the structure of region A in the middle.

[0021] Explanation of the labels in the diagram:

[0022] 1. Workbench; 2. Support plate; 3. Groove; 4. First electric push rod; 5. Placement plate; 6. Gas supply assembly; 7. Leak detection assembly; 8. Gas storage tank; 9. Second electric push rod; 10. Support plate; 11. Hose; 12. Limiting slide plate; 13. Motor; 14. Frame plate; 15. Sliding hole; 16. Slider; 17. Connecting ring; 18. Annular groove; 19. Lifting block; 20. Sliding block; 21. Two-way lead screw; 22. Sliding groove. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] Example:

[0027] Please see Figure 1 , Figure 2 and Figure 3 This application discloses a helium leak detection device for a heat exchanger, including a workbench 1, a gas storage tank 8 located on the top right side of the workbench 1, and a leak detection component 7 and a gas delivery component 6 located above the workbench 1. In this application, the gas storage tank 8 stores helium. The leak detection component 7 and the gas delivery component 6 are both prior art, and their structures and working principles are based on a leak detection device for a plate heat exchanger disclosed in CN214200545U, which will not be described in detail here. A support plate 2 is symmetrically and fixedly connected to the bottom end of the workbench 1. A placement component is provided on the workbench 1. A second electric push rod 9 is fixedly connected to the outside of the gas storage tank 8. The second electric push rod 9 is extended to drive the frame plate 14 to move. The moving component on the frame plate 14 drives the gas delivery component 6 and the leak detection component 7 to move, thereby driving the connecting ring 17 to be inserted into the interface. No manual docking is required, saving manpower and improving detection efficiency. The output end of the second electric push rod 9 is fixedly connected to the frame plate 14.

[0028] The left ends of both the leak detection assembly 7 and the gas supply assembly 6 penetrate the frame plate 14 and extend to the left side of the frame plate 14. Two lifting blocks 19 are symmetrically arranged inside the frame plate 14, respectively fixedly connected to the outside of the leak detection assembly 7 and the gas supply assembly 6. A moving assembly is provided on the frame plate 14. A connecting ring 17 is fixedly connected to the left ends of both the leak detection assembly 7 and the gas supply assembly 6. Multiple annular grooves 18 are formed on the connecting ring 17, with the diameter of the multiple annular grooves 18 increasing from the inside to the outside. (See reference...) Figure 3 The arrangement of multiple annular grooves 18 of different diameters facilitates the connection of the connecting ring 17 to interfaces of different diameters, thereby improving the applicability of the device. The bottom walls of the multiple annular grooves 18 are respectively fixedly connected with annular sealing rings, which increase the sealing performance of the leak detection component 7 and the gas delivery component 6 with the interface. A hose 11 is connected between the gas storage tank 8 and the gas delivery component 6.

[0029] Please see Figure 1The placement component includes a groove 3 on the top left side of the workbench 1, with a placement plate 5 inside the groove 3. A first electric push rod 4 is fixedly connected to the left side of the bottom surface of the workbench 1. The heat exchanger is placed on top of the placement plate 5, with the left side of the heat exchanger contacting the right end face of the backing plate 10. The height of the heat exchanger can be adjusted by controlling the operation of the first electric push rod 4. In conjunction with the use of the moving component, the interface of the heat exchanger can correspond to the gas supply component 6 and the leak detection component 7. The output end of the first electric push rod 4 passes through the inner cavity of the workbench 1 and is fixedly connected to the bottom surface of the placement plate 5. A backing plate 10 is fixedly connected to the left side of the top surface of the workbench 1. When the gas supply component 6 and the leak detection component 7 are inserted into the interface of the heat exchanger by the second electric push rod 9, the backing plate 10 acts to hold the heat exchanger in place and prevent it from moving. The left end face of the placement plate 5 is slidably connected to the right end face of the backing plate 10.

[0030] Please see Figure 2 and Figure 3 The moving component includes a sliding groove 22 formed in the inner wall of the frame plate 14. A bidirectional lead screw 21 is rotatably connected inside the sliding groove 22. Two sliding blocks 20 are symmetrically slidably connected inside the sliding groove 22, and the two sliding blocks 20 are threaded onto the outside of the bidirectional lead screw 21. The sliding blocks 20 and the lifting blocks 19 are fixedly connected to opposite sides. A motor 13 for driving the bidirectional lead screw 21 to rotate is fixedly connected to the top of the frame plate 14. The operation of the motor 13 drives the bidirectional lead screw 21 to rotate. The rotation of the bidirectional lead screw 21 can cause the two sliding blocks 20 inside the sliding groove 22 to move relative to each other or towards each other, thereby driving the two lifting blocks. The relative or opposite movement of the lifting block 19 adjusts the distance between the gas delivery component 6 and the leak detection component 7 to accommodate different sizes of interface spacing, thus improving the applicability of the device. The surface of the frame plate 14 is provided with a sliding hole 15, and a slider 16 is symmetrically slidably connected inside the sliding hole 15. The slider 16 and the opposite side of the lifting block 19 are fixedly connected. The cooperation between the slider 16 and the sliding hole 15 further limits the lifting block 19. When the lifting block 19 moves, the lifting block 19 drives the slider 16 to move inside the sliding hole 15, which improves the stability of the lifting block 19 when it moves, thereby improving the stability of the leak detection component 7 and the gas delivery component 6 when they move.

[0031] Please see Figure 2 The bottom end face of the frame plate 14 is fixedly connected to the limiting slide plate 12. The bottom end face of the limiting slide plate 12 is slidably connected to the top end face of the workbench 1. When the second electric push rod 9 works to drive the frame plate 14 to move, the frame plate 14 moves and drives the limiting slide plate 12 to slide on the top of the workbench 1, thereby improving the stability of the frame plate 14 when it moves, which further improves the stability of the leak detection component 7 and the air supply component 6 when they move.

[0032] The implementation principle of this embodiment is as follows: The heat exchanger is placed on top of the workbench 1, with its left side in contact with the right end face of the backing plate 10. The centers of the upper and lower interfaces of the heat exchanger are located at the upper center of the workbench 1. Then, controlling the first electric push rod 4 adjusts the height of the heat exchanger, and controlling the motor 13 drives the bidirectional lead screw 21 to rotate. The rotation of the bidirectional lead screw 21 causes the two sliding blocks 20 inside the sliding groove 22 to move relative to each other or towards each other, thereby driving the two lifting blocks 19 to move relative to each other or towards each other, adjusting the distance between the gas delivery assembly 6 and the leak detection assembly 7. This allows the gas delivery assembly 6 and the leak detection assembly 7 to correspond to the two ports on the heat exchanger, respectively. Then, the second electric push rod 9 is controlled to extend and drive the frame plate 14 to move. The moving component on the frame plate 14 drives the gas delivery assembly 6 and the leak detection assembly 7 to move, thereby driving the connecting ring 17 to be inserted into the port. When the connecting ring 17 on the gas delivery assembly 6 and the leak detection assembly 7 is inserted into the port of the heat exchanger by the second electric push rod 9, the abutment plate 10 plays the role of holding the heat exchanger in place and preventing the heat exchanger from moving. This connection method eliminates the need for manual docking, saves manpower, and improves detection efficiency.

[0033] The working principle of this application for detecting external leaks in heat exchangers is based on a leak detection device for plate heat exchangers published (announcement) with publication number CN214200545U, which will not be described in detail here.

[0034] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and application concept of this application, should be included within the scope of protection of this application.

Claims

1. A heat exchanger helium leak detection device, comprising a workbench (1), a gas storage tank (8) disposed on the top right side of the workbench (1), and a leak detection assembly (7) and a gas delivery assembly (6) disposed above the workbench (1), characterized in that: The bottom end of the workbench (1) is symmetrically and fixedly connected to a support plate (2). A placement component is provided on the workbench (1). A second electric push rod (9) is fixedly connected to the outside of the gas storage tank (8). A frame plate (14) is fixedly connected to the output end of the second electric push rod (9). The left ends of the leak detection component (7) and the gas delivery component (6) both penetrate the frame plate (14) and extend to the left side of the frame plate (14). Two lifting blocks (19) are symmetrically arranged inside the frame plate (14) and are respectively fixedly connected to the outside of the leak detection component (7) and the gas delivery component (6). A moving component is provided on the frame plate (14). A connecting ring (17) is fixedly connected to the left end of the leak detection component (7) and the gas delivery component (6). A hose (11) is connected between the gas storage tank (8) and the gas delivery component (6).

2. The heat exchanger helium leak detection device according to claim 1, characterized in that: The placement assembly includes a groove (3) on the top left side of the workbench (1), and a placement plate (5) is provided inside the groove (3). A first electric push rod (4) is fixedly connected to the left side of the bottom surface of the workbench (1). The output end of the first electric push rod (4) passes through the inner cavity of the workbench (1) and is fixedly connected to the bottom surface of the placement plate (5).

3. The heat exchanger helium leak detection device according to claim 2, characterized in that: A backing plate (10) is fixedly connected to the left side of the top surface of the workbench (1), and the left end face of the placement plate (5) is slidably connected to the right end face of the backing plate (10).

4. The heat exchanger helium leak detection device according to claim 1, characterized in that: The moving component includes a sliding groove (22) formed on the inner wall of the frame plate (14). A bidirectional lead screw (21) is rotatably connected inside the sliding groove (22). Two sliding blocks (20) are symmetrically slidably connected inside the sliding groove (22), and the two sliding blocks (20) are threaded onto the outside of the bidirectional lead screw (21). The sliding blocks (20) and the lifting block (19) are fixedly connected to opposite sides. A motor (13) for driving the bidirectional lead screw (21) to rotate is fixedly connected to the top of the frame plate (14).

5. The heat exchanger helium leak detection device according to claim 1, characterized in that: The frame plate (14) has a sliding hole (15) on its surface. A slider (16) is symmetrically slidably connected inside the sliding hole (15), and the slider (16) and the lifting block (19) are fixedly connected to each other on opposite sides.

6. The heat exchanger helium leak detection device according to claim 1, characterized in that: Multiple annular grooves (18) are formed on the connecting ring (17), and annular sealing rings are fixedly connected to the bottom walls of the multiple annular grooves (18).

7. The heat exchanger helium leak detection device according to claim 1, characterized in that: The bottom end face of the frame plate (14) is fixedly connected to the limiting slide plate (12), and the bottom end face of the limiting slide plate (12) is slidably connected to the top end face of the workbench (1).

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