Heat exchanger leak detection device

Abstract

The utility model discloses a heat exchanger leak detection device, which comprises a base and a detection mechanism, the detection mechanism is arranged on one side of the end part of the base, the middle part of the base is provided with a placing groove, a clamping mechanism and a lifting mechanism are arranged in the placing groove, and a heat exchanger is arranged on the lifting mechanism. Whether the heat exchanger leaks or not is judged by observing the air pressure at the inlet end and the outlet end of the heat exchanger, leakage detection can be conveniently and quickly carried out on the heat exchanger, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of leak detection, and particularly relates to a heat exchanger leak detection device. Background Art

[0002] Heat exchangers are devices that transfer part of the heat of hot fluid to cold fluid, also known as heat exchangers. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial production. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc. They are widely used. The welds of the internal pipes of heat exchangers often break, which is not easy to find. After the production is completed, a detection device is needed to detect whether the heat exchanger has leakage to avoid unqualified products in later use.

[0003] In the prior art, whether there is a leak in the heat exchanger is often checked by injecting water into the inside of the heat exchanger. Injecting water into the heat exchanger requires workers to check whether there is water flowing out of each welding point, and then determine whether there is a leak in the heat exchanger. Although this method can detect whether there is a leak in the heat exchanger, it is time-consuming and labor-intensive, resulting in low work efficiency. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a heat exchanger leak detection device, which can judge whether there is a leak in the heat exchanger by observing the air pressure at the inlet and outlet ends of the heat exchanger, and can conveniently and quickly perform leak detection on the heat exchanger, thereby improving work efficiency.

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

[0006] A heat exchanger leak detection device comprises a base and a detection mechanism, wherein the detection mechanism is installed at one side of the base end, a placement groove is provided in the middle of the base, a clamping mechanism and a lifting mechanism are installed inside the placement groove, and the heat exchanger is installed on the lifting mechanism.

[0007] The lifting mechanism includes a first telescopic rod and a carrying plate. There are two first telescopic rods installed at both ends of the bottom of the placement groove. The carrying plate is connected to the top ends of the two first telescopic rods. Support blocks are respectively installed at both ends of the top of the carrying plate. The heat exchanger is placed on the carrying plate through the support blocks.

[0008] The clamping mechanism includes a driving motor, a bidirectional threaded rod, and a clamping plate. The bidirectional threaded rod is located between the two first telescopic rods. Both ends of the bidirectional threaded rod are rotatably mounted on the side walls of the placement groove. Slide blocks are symmetrically threadedly mounted on different threaded segments of the bidirectional threaded rod. A guide block is mounted at the bottom of the slider. A guide groove matching the guide block is provided at the bottom of the placement groove. The clamping plate is mounted above the slider. A rubber plate is mounted on the side of the clamping plate close to the bearing plate. A gap is left between the bottom of the rubber plate and the bottom of the clamping plate. The size of the gap is greater than the thickness of the bearing plate. The driving motor is mounted on the outside of the base. The end of the output shaft of the driving motor extends to the inside of the base and is connected to one end of the bidirectional threaded rod.

[0009] The detection mechanism includes a vertical plate, an air pump, a second telescopic rod, and a support plate. The vertical plate is installed on the base, and the air pump is installed on the bottom of the vertical plate away from the placement slot. An air outlet pipe is installed above the air pump and on the vertical plate, and the air outlet pipe passes through the vertical plate. There are two second telescopic rods and they are installed at both ends of the vertical plate close to the placement slot. The support plate is installed at the ends of the two second telescopic rods. Connecting pipes corresponding to the inlet and outlet ends of the heat exchanger are installed on the support plate, and a pressure gauge is installed on each connecting pipe. One of the connecting pipes is connected to the air outlet of the air pump through a telescopic hose, and the other connecting pipe is connected to the air outlet pipe through a telescopic hose.

[0010] Preferably, a conical block is installed outside one end of the connecting pipe close to the heat exchanger.

[0011] Preferably, the support block is a U-shaped block.

[0012] The beneficial effects of the utility model are:

[0013] 1) By observing the air pressure at the inlet and outlet of the heat exchanger, it is possible to determine whether the heat exchanger is leaking, which can facilitate and quickly detect leaks in the heat exchanger and improve work efficiency.

[0014] 2) A conical block is installed on the outside of one end of the connecting pipe close to the heat exchanger. The conical block improves the tightness of the connection between the connecting pipe and the inlet and outlet ends on the heat exchanger, avoiding air leakage at the connection between the connecting pipe and the inlet and outlet ends on the heat exchanger during the inspection of the heat exchanger, thereby ensuring the accuracy of the data.

[0015] 3) The support block is a U-shaped block, which is used to preliminarily fix the two ends of the heat exchanger to prevent the heat exchanger from tilting and ensure the normal progress of the leak detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 The utility model is a schematic diagram of the structure of a heat exchanger leakage detection device.

[0017] Attached Figure 2 The utility model is a schematic diagram of the internal structure of a base of a heat exchanger leakage detection device.

[0018] Attached Figure 3 The utility model is a structural schematic diagram of a detection mechanism of a heat exchanger leakage detection device.

[0019] In the figure: 1. base; 11. placement groove; 12. guide groove; 2. lifting mechanism; 201. first telescopic rod; 202. bearing plate; 203. U-shaped block; 3. heat exchanger; 31. inlet end; 32. outlet end; 4. detection mechanism; 401. vertical plate; 402. air pump; 403. air outlet pipe; 404. second telescopic rod; 405. support plate; 406. telescopic hose; 407. connecting pipe; 408. pressure gauge; 409. conical block; 5. clamping mechanism; 501. driving motor; 502. bidirectional threaded rod; 503. slider; 504. guide block; 505. clamping plate; 506. rubber plate. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-3 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] A heat exchanger 3 leak detection device comprises a base 1 and a detection mechanism 4, wherein the detection mechanism 4 is mounted on one side of the end of the base 1, a placement slot 11 is provided in the middle of the base 1, a clamping mechanism 5 and a lifting mechanism 2 are installed inside the placement slot 11, the heat exchanger 3 is installed on the lifting mechanism 2, the lifting mechanism 2 comprises a first telescopic rod 201 and a bearing plate 202, the first telescopic rod 201 is two in number and is installed at both ends of the bottom of the placement slot 11, the bearing plate 202 is connected to the top ends of the two first telescopic rods 201, support blocks are installed at both ends of the top of the bearing plate 202, and the heat exchanger 3 is placed on the bearing plate 202 through the support blocks.

[0023] The clamping mechanism 5 includes a driving motor 501, a bidirectional threaded rod 502, and a clamping plate 505. The bidirectional threaded rod 502 is located between the two first telescopic rods 201. Both ends of the bidirectional threaded rod 502 are rotatably mounted on the side walls of the placement groove 11. Slide blocks 503 are symmetrically threadedly mounted on different threaded segments of the bidirectional threaded rod 502. A guide block 504 is mounted at the bottom of the slide block 503. A guide groove 12 matching the guide block 504 is provided at the bottom of the placement groove 11. The clamping plate 505 is mounted above the slide block 503. A rubber plate 506 is mounted on the side of the clamping plate 505 close to the bearing plate 202. A gap is left between the bottom of the rubber plate 506 and the bottom of the clamping plate 505. The size of the gap is greater than the thickness of the bearing plate 202. The driving motor 501 is mounted on the outside of the base 1. The output shaft end of the driving motor 501 extends to the inside of the base 1 and is connected to one end of the bidirectional threaded rod 502.

[0024] The detection mechanism 4 includes a vertical plate 401, an air pump 402, a second telescopic rod 404, and a support plate 405. The vertical plate 401 is installed on the base 1, and the air pump 402 is installed at the bottom of the vertical plate 401 away from the placement groove 11. An air outlet pipe 403 is installed above the air pump 402 and on the vertical plate 401, and the air outlet pipe 403 passes through the vertical plate 401. There are two second telescopic rods 404 and they are installed at both ends of the vertical plate 401 close to the placement groove 11. The support plate 405 is installed at the ends of the two second telescopic rods 404. Connecting pipes 407 corresponding to the inlet end 31 and the outlet end 32 of the heat exchanger 3 are installed on the support plate 405, and each connecting pipe 407 is installed with a pressure gauge 408. One of the connecting pipes 407 is connected to the air outlet of the air pump 402 through a telescopic hose 406, and the other connecting pipe 407 is connected to the air outlet pipe 403 through a telescopic hose 406.

[0025] A conical block 409 is installed on the outside of the end of the connecting pipe 407 close to the heat exchanger 3, and the conical block 409 improves the tightness of the connection between the connecting pipe 407 and the inlet end 31 and the outlet end 32 on the heat exchanger 3, thereby avoiding leakage at the connection between the connecting pipe and the inlet end 31 and the outlet end 32 on the heat exchanger 3 when testing the heat exchanger 3, thereby ensuring the accuracy of the data. The supporting block is a U-shaped block 203, and the two ends of the heat exchanger 3 are initially fixed by the U-shaped block 203 to prevent the heat exchanger 3 from tilting, thereby ensuring the normal performance of the leak detection work.

[0026] A heat exchanger 3 leak detection device, the working process of which is as follows: the heat exchanger 3 is installed on the U-shaped blocks 203 at both ends of the carrier plate 202, so that the inlet end 31 and the outlet end 32 of the heat exchanger 3 are close to the detection mechanism 4, the first telescopic rod 201 works to drive the heat exchanger 3 to move downward, so that the inlet end 31 and the outlet end 32 of the heat exchanger 3 are at the same height as the two connecting pipes 407, the driving motor 501 works to drive the bidirectional threaded rod 502 to rotate, the sliders 503 located on different threaded sections of the bidirectional threaded rod 502 approach each other through the guide block 504, and the clamping plate 505 located on the slider 503 moves accordingly, driving the rubber plate 506 to clamp the two sides of the heat exchanger 3, and the second telescopic rod 404 The extension drives the support plate 405 to move toward one side of the heat exchanger 3. The two connecting pipes 407 located on the support plate 405 are connected to the inlet end 31 and the outlet end 32 on the heat exchanger through the tapered block 409. Then the air pump 402 works to make the generated gas flow through the telescopic hose 406, the connecting pipe 407, the inlet end 31, the inside of the heat exchanger 3, the outlet end 32, the connecting pipe 407, the telescopic hose 406, and the air outlet pipe 403 in sequence. During this process, the pressure gauges 408 on the two connecting pipes 407 are observed. If the values ​​displayed by the two pressure gauges 408 are consistent, it indicates that there is no leakage in the heat exchanger 3. If the values ​​displayed by the two pressure gauges 408 are inconsistent, it indicates that there is a leakage in the heat exchanger 3.

[0027] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A heat exchanger leak detection device, comprising a base and a detection mechanism, wherein the detection mechanism is installed on one side of the end of the base, characterized in that: A placement slot is provided in the middle of the base, a clamping mechanism and a lifting mechanism are installed inside the placement slot, the heat exchanger is installed on the lifting mechanism, the detection mechanism includes a vertical plate, an air pump, a second telescopic rod, and a support plate, the vertical plate is installed on the base, the air pump is installed at the bottom of the vertical plate away from the placement slot, an air outlet pipe is installed above the air pump and on the vertical plate, the air outlet pipe passes through the vertical plate, the number of the second telescopic rods is two and they are installed at both ends of the vertical plate close to the placement slot, the support plate is installed at the ends of the two second telescopic rods, connecting pipes corresponding to the inlet and outlet ends of the heat exchanger are installed on the support plate, a pressure gauge is installed on each connecting pipe, one of the connecting pipes is connected to the air outlet of the air pump through a telescopic hose, and the other connecting pipe is connected to the air outlet pipe through a telescopic hose.

2. A heat exchanger leak detection device according to claim 1, characterized in that: The lifting mechanism includes a first telescopic rod and a carrying plate. There are two first telescopic rods installed at both ends of the bottom of the placement groove. The carrying plate is connected to the top ends of the two first telescopic rods. Support blocks are respectively installed at both ends of the top of the carrying plate. The heat exchanger is placed on the carrying plate through the support blocks.

3. A heat exchanger leak detection device according to claim 2, characterized in that: The supporting block is a U-shaped block.

4. A heat exchanger leak detection device according to claim 1, characterized in that: The clamping mechanism includes a driving motor, a bidirectional threaded rod, and a clamping plate. The bidirectional threaded rod is located between the two first telescopic rods. Both ends of the bidirectional threaded rod are rotatably mounted on the side walls of the placement groove. Slide blocks are symmetrically threadedly mounted on different threaded segments of the bidirectional threaded rod. A guide block is mounted at the bottom of the slider. A guide groove matching the guide block is provided at the bottom of the placement groove. The clamping plate is mounted above the slider. A rubber plate is mounted on the side of the clamping plate close to the bearing plate. A gap is left between the bottom of the rubber plate and the bottom of the clamping plate. The size of the gap is greater than the thickness of the bearing plate. The driving motor is mounted on the outside of the base. The end of the output shaft of the driving motor extends to the inside of the base and is connected to one end of the bidirectional threaded rod.

5. A heat exchanger leak detection device according to claim 1, characterized in that: A conical block is installed outside one end of the connecting pipe close to the heat exchanger.

Images