Diffusion leak detection device for heat exchanger
By designing a drainage and leak detection device including a buffer tank, a detection tank and an automatic exhaust component, the leakage of the heat exchanger is automatically detected by the difference in water pressure and air pressure, the problem of the inability to effectively detect the leakage of the heat exchanger in the prior art is solved, and safety and reliability are improved.
Patent Information
- Application Number
- CN202420651204.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The prior art cannot effectively detect leakage of heat exchangers, resulting in safety hazards and abnormal use.
A discharge leakage detection device including a buffer tank, a detection tank and an automatic exhaust assembly is designed. The device automatically opens or closes the exhaust passage through the combination of the sealing plate, sealing ring and spring by using the difference in water pressure and air pressure to detect heat exchanger leakage.
Effective detection of heat exchanger leakage is achieved, safety and reliability is improved, and the problem that the existing technology cannot detect heat exchanger leakage is solved.
Smart Images
Figure CN222774202U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a detection device, in particular to a radiation leakage detection device for a heat exchanger. Background Art
[0002] Heat exchangers are usually installed in gas pipelines to prevent the low temperature of the gas after pressure regulation from affecting the use of end users. Heat exchangers in gas pipelines are generally equipped with gas passages and liquid passages. When the gas flows through the gas passage, the temperature can be increased by heat exchange with the hot water in the liquid passage. This type of heat exchanger is constructed by welding plates and pipes. Once an internal leak occurs, the high-pressure gas in the gas passage will enter the liquid passage, which not only affects normal use, but also creates safety hazards. Because the pipes and welding points are inside the heat exchanger shell, it is very difficult to detect leaks in the heat exchanger. At present, there is no device or equipment specifically for leak detection of heat exchangers in this field. Utility Model Content
[0003] The utility model aims to provide a radiation leakage detection device for a heat exchanger, which has the advantages of simple structure, low cost, convenient use, safety, reliability and strong practicability.
[0004] In order to solve the above problems existing in the prior art, the utility model provides a release leak detection device for a heat exchanger, comprising a buffer tank, a detection tank and an automatic exhaust assembly, wherein the upper and lower sides of the buffer tank are correspondingly provided with a first pipe and a second pipe connected to the inner cavity thereof, and the ends of the first pipe and the second pipe are correspondingly provided with a first flange and a second flange, and the upper and lower sides of the detection tank are correspondingly provided with a first pipe joint and a third pipe connected to the inner cavity thereof, and the first pipe joint is connected with a release valve, and the end of the third pipe is provided with a third flange fixedly connected with the first flange, and the automatic exhaust assembly comprises a pressure plate sealed and fixed between the first flange and the third flange, a guide hole is provided in the middle of the pressure plate, and through holes distributed along the circumferential direction are provided on the pressure plate outside the guide hole, an annular sealing protrusion is provided on the upper side of the pressure plate at the periphery of the through hole, a guide rod is provided in the guide hole of the pressure plate, a sealing plate in the third flange is fixed to the upper end of the guide rod, a sealing ring matched with the sealing protrusion is provided on the lower side of the sealing plate, a nut in the first pipe is installed at the lower end of the guide rod, a spring seat is sleeved on the guide rod on the upper side of the nut, and a spring is sleeved on the guide rod between the spring seat and the pressure plate.
[0005] Furthermore, the utility model provides a venting leak detection device for a heat exchanger, wherein the buffer tank is provided with a second pipe joint connected to the inner cavity thereof, and the second pipe joint is connected to a first pressure gauge.
[0006] Furthermore, the utility model provides a venting leak detection device for a heat exchanger, wherein the left and right sides of the detection tank are respectively provided with a third pipe joint and a fourth pipe joint connected to the inner cavity thereof, the third pipe joint is connected to a second pressure gauge, and the fourth pipe joint is connected to a first ball valve.
[0007] Furthermore, the utility model provides a venting leak detection device for a heat exchanger, wherein a second ball valve is provided between the first pipe joint and the venting valve, the pressure plate is provided with bolt holes matching the first flange and the third flange, and the sealing ring is embedded on the lower side of the sealing plate.
[0008] Compared with the prior art, the utility model discloses a venting leak detection device for a heat exchanger, which has the following advantages: the utility model provides a buffer tank, a detection tank and an automatic exhaust component, and the first and second connecting pipes connected to the inner cavity of the buffer tank are correspondingly provided on the upper and lower sides thereof, and the first flange and the second flange are correspondingly provided at the ends of the first and second connecting pipes, and the first pipe joint and the third connecting pipe connected to the inner cavity are correspondingly provided on the upper and lower sides of the detection tank, so that the first pipe joint is connected to the venting valve, and the third flange fixedly connected to the first flange is provided at the end of the third connecting pipe, so that the automatic exhaust component is provided with a tight A pressure plate is sealed and fixed between the first flange and the third flange, a guide hole is arranged in the middle of the pressure plate, through holes distributed along the circumferential direction are arranged on the pressure plate outside the guide hole, an annular sealing protrusion is arranged on the upper side surface of the pressure plate and at the outer position of the through hole, and a guide rod is arranged in the guide hole of the pressure plate, wherein a sealing plate in the third flange is fixed to the upper end of the guide rod, a sealing ring matching with the sealing protrusion is arranged on the lower side surface of the sealing plate, a nut in the first connecting pipe is installed at the lower end of the guide rod, a spring seat is sleeved on the guide rod on the upper side of the nut, and a spring is sleeved on the guide rod between the spring seat and the pressure plate. Thus, a venting leak detection device for a heat exchanger is formed, which has a simple structure, low cost, easy use, safety, reliability and strong practicality. In actual application, the utility model is installed on the corresponding detection interface of the heat exchanger through the second flange, and the venting valve is connected to the gas detector. When the heat exchanger is not leaking, the low-pressure water in the liquid passage of the heat exchanger enters the buffer tank. At this time, because the force of the water pressure on the sealing plate is less than the force of the spring, the sealing ring on the sealing plate will be tightly attached to the sealing protrusion, so that the automatic exhaust component is in a closed state, and the gas detector cannot detect the gas signal; when the heat exchanger leaks, the gas The high-pressure gas in the passage will enter the buffer tank through the liquid passage. At this time, because the force of the air pressure on the sealing plate is greater than the force of the spring, the sealing ring on the sealing plate will leave the sealing protrusion to open the automatic exhaust assembly. After the automatic exhaust assembly is opened, the high-pressure gas and part of the low-pressure water in the buffer tank will enter the detection tank through the through hole on the pressure plate, and the high-pressure gas will then enter the gas detector through the vent valve. After the gas detector detects the gas signal, it can be determined that a leak has occurred in the heat exchanger, and countermeasures can be taken in time, which solves the problem that the existing technology cannot detect leaks in the heat exchanger, thereby improving safety and reliability.
[0009] The following is a further detailed description of a leakage detection device for a heat exchanger of the utility model in conjunction with the specific embodiments shown in the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic structural diagram of a venting leak detection device for a heat exchanger according to the utility model;
[0011] Figure 2 It is a structural schematic diagram of the automatic exhaust component in the utility model. DETAILED DESCRIPTION
[0012] First of all, it should be explained that the directional words such as up, down, left, right, front and back described in the present invention are only described according to the drawings for the convenience of understanding, and are not intended to limit the technical solution of the present invention and the scope of protection requested.
[0013] like Figure 1 and Figure 2 The utility model is a specific embodiment of a venting leak detection device for a heat exchanger, comprising a buffer tank 1, a detection tank 2 and an automatic exhaust assembly 3. A first connecting pipe 11 and a second connecting pipe 12 connected to the inner cavity of the buffer tank 1 are correspondingly arranged on the upper and lower sides thereof, and a first flange 13 and a second flange 14 are correspondingly arranged at the ends of the first connecting pipe 11 and the second connecting pipe 12. A first pipe joint 21 and a third connecting pipe 22 connected to the inner cavity of the detection tank 2 are correspondingly arranged on the upper and lower sides thereof, the first pipe joint 21 is connected to a venting valve 23, the venting valve 23 is connected to a gas detector (not shown in the figure), and a third flange 24 fixedly connected to the first flange 13 is arranged at the end of the third connecting pipe 22. The automatic exhaust component 3 is provided with a pressure plate 31 sealed and fixed between the first flange 13 and the third flange 24, a guide hole is provided in the middle of the pressure plate 31, a through hole 311 distributed along the circumferential direction is provided on the pressure plate 31 outside the guide hole, a sealing protrusion 312 which is located outside the through hole 311 and is annular is provided on the upper side surface of the pressure plate 31, and a guide rod 32 is provided in the guide hole of the pressure plate 31, wherein a sealing plate 33 located in the third flange 24 is fixed to the upper end of the guide rod 32, a sealing ring 331 which cooperates with the sealing protrusion 312 is provided on the lower side surface of the sealing plate 33, a nut 34 located in the first connecting pipe 11 is threadedly installed on the lower end of the guide rod 32, a spring seat 35 is sleeved on the guide rod 32 on the upper side of the nut 34, and a spring 36 is sleeved on the guide rod 32 between the spring seat 35 and the pressure plate 31.
[0014] The above arrangement constitutes a leakage detection device for a heat exchanger with a simple structure, low cost, convenient use, safety, reliability and strong practicality. In practical applications, the utility model is installed on the detection interface corresponding to the heat exchanger 100 through the second flange 14. When the heat exchanger 100 does not leak, the low-pressure water in the liquid passage of the heat exchanger enters the buffer tank 1. At this time, because the force of the water pressure on the sealing plate 33 is less than the force of the spring 36, the sealing ring 331 on the sealing plate 33 will be tightly attached to the sealing protrusion 312, so that the automatic exhaust component 3 is in a closed state, and the gas detector cannot detect the gas signal; when the heat exchanger 100 leaks, the gas in the gas passage will be The high-pressure gas will enter the buffer tank 1 through the liquid passage. At this time, because the force of the gas pressure on the sealing plate 33 is greater than the force of the spring 36, the sealing ring 331 on the sealing plate 33 will leave the sealing protrusion 312 to open the automatic exhaust assembly 3. After the automatic exhaust assembly 3 is opened, the high-pressure gas and part of the low-pressure water in the buffer tank 1 will enter the detection tank 2 through the through hole 311 on the pressure plate 31, and the high-pressure gas will then enter the gas detector through the relief valve 23. After the gas detector detects the gas signal, it can be determined that the heat exchanger has leaked, and timely countermeasures are taken, which solves the problem that the prior art cannot detect the leakage of the heat exchanger and improves safety and reliability. It should be noted that, in order to facilitate connection and control, the utility model usually sets the detection interface to set a vertical pipe 101 connected to the gas passage of the heat exchanger and a control valve 102 connected to the vertical pipe 101, and sets the control valve 102 to set an interface flange matching the second flange 14, so that the opening and closing of the detection passage can be controlled by switching the control valve 102.
[0015] As a specific implementation, in order to facilitate intuitive understanding of the internal pressure of the buffer tank 1, the utility model is provided with a second pipe joint 15 connected to its inner cavity on the buffer tank 1, and the second pipe joint 15 is connected to the first pressure gauge 16. Similarly, the third pipe joint 25 and the fourth pipe joint 26 connected to its inner cavity are correspondingly provided on the left and right sides of the detection tank 2, and the third pipe joint 25 is connected to the second pressure gauge 27, so as to intuitively grasp the internal pressure of the detection tank 2, and the fourth pipe joint 26 is connected to the first ball valve 28, so as to discharge the water in the detection tank 2 after the detection is completed and the utility model is removed. In practical application, for the convenience of control, the utility model is provided with a second ball valve 29 between the first pipe joint 21 and the relief valve 23, and the pressure plate 31 is provided with bolt holes matching the first flange 13 and the third flange 24, so that the three can be fixed together by passing the bolts through the bolt holes. In order to ensure the sealing of the connection, the utility model is also provided with sealing gaskets between each other. In addition, the utility model provides a sealing groove with a larger upper section and smaller lower section on the lower side of the sealing plate 33, and embeds the sealing ring 331 in the sealing groove of the sealing plate 33 to ensure structural stability.
[0016] The above embodiments are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the protection scope of the present invention. Without departing from the design concept of the present invention, various modifications made by those skilled in the art based on the technical solution of the present invention should fall within the protection scope determined by the claims of the present invention.
Claims
1. A venting leak detection device for a heat exchanger, characterized in that: The invention comprises a buffer tank (1), a detection tank (2) and an automatic exhaust assembly (3), wherein the buffer tank (1) is provided with a first connecting pipe (11) and a second connecting pipe (12) communicating with its inner cavity on the upper and lower sides thereof, and the ends of the first connecting pipe (11) and the second connecting pipe (12) are provided with a first flange (13) and a second flange (14) on the upper and lower sides thereof, and the detection tank (2) is provided with a first pipe joint (21) and a third connecting pipe (22) communicating with its inner cavity on the upper and lower sides thereof, and the first pipe joint (21) is connected with a relief valve (23), and the end of the third connecting pipe (22) is provided with a third flange (24) fixedly connected with the first flange (13), and the automatic exhaust assembly (3) comprises a pressure plate (31) sealed and fixed between the first flange (13) and the third flange (24), and the pressure plate (31 ) is provided with a guide hole in the middle part, a pressure plate (31) outside the guide hole is provided with through holes (311) distributed in the circumferential direction, an upper side surface of the pressure plate (31) is provided with an annular sealing protrusion (312) outside the through hole (311), a guide rod (32) is provided in the guide hole of the pressure plate (31), a sealing plate (33) in the third flange (24) is fixed to the upper end of the guide rod (32), a sealing ring (331) matched with the sealing protrusion (312) is provided on the lower side surface of the sealing plate (33), a nut (34) in the first connecting pipe (11) is installed at the lower end of the guide rod (32), a spring seat (35) is sleeved on the guide rod (32) on the upper side of the nut (34), and a spring (36) is sleeved on the guide rod (32) between the spring seat (35) and the pressure plate (31).
2. A leakage detection device for heat exchangers according to claim 1, characterized in that: The buffer tank (1) is provided with a second pipe joint (15) communicating with its inner cavity, and the second pipe joint (15) is connected to a first pressure gauge (16).
3. The radiating leak detection device for a heat exchanger according to claim 1, characterized in that: A third pipe joint (25) and a fourth pipe joint (26) communicating with the inner cavity of the detection tank (2) are provided on the left and right sides thereof, respectively; the third pipe joint (25) is connected to a second pressure gauge (27), and the fourth pipe joint (26) is connected to a first ball valve (28).
4. A leakage detection device for heat exchangers according to claim 1, characterized in that: A second ball valve (29) is provided between the first pipe joint (21) and the relief valve (23), the pressure plate (31) is provided with bolt holes matching the first flange (13) and the third flange (24), and the sealing ring (331) is embedded on the lower side of the sealing plate (33).