CN219348110U

CN219348110U - Leak detection device for heat transfer pipe

Info

Publication number: CN219348110U
Application number: CN202320371491.5U
Authority: CN
Inventors: 陈光辉; 徐海涛; 陈洪培; 熊少武; 卿再飞
Original assignee: Fujian Ningde Nuclear Power Co Ltd
Current assignee: Fujian Ningde Nuclear Power Co Ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-07-14
Anticipated expiration: 2033-03-02

Abstract

The utility model relates to a heat transfer tube leakage detection device, which comprises a pressurization module and a leakage blocking module, wherein the pressurization module comprises an inflation interface, an air source interface and a first air pressure gauge communicated with the inflation interface, the inflation interface is in operable communication with the air source interface, and the inflation interface is arranged at one end of a heat exchange tube to be in sealed communication with the heat exchange tube; the plugging module comprises a plugging interface and a second barometer communicated with the plugging interface, and the plugging interface is arranged at the other end of the heat exchange tube to plug the heat exchange tube; according to the utility model, the pressurizing module and the plugging module are used for sealing one end of the heat exchange tube, the pressurizing module is communicated with the air source and is used for sealing and communicating the other end of the heat exchange tube, so that the heat exchange tube can be rapidly pressurized, whether the heat exchange tube with the two sealed ends is pressurized or not is observed by the pressure gauges respectively, the pressure maintenance can be judged to be undamaged, and the leakage can be judged to be caused without the pressure maintenance, so that the pressurizing module can be used for rapidly detecting leakage of the heat exchange tube; the operation is convenient and quick, and the result is accurate and reliable, thereby improving the inspection efficiency.

Description

Leak detection device for heat transfer pipe

Technical Field

The utility model relates to the technical field of inspection devices, in particular to a heat transfer tube leakage detection device.

Background

For leakage detection of the heat transfer tube, helium leakage detection and film covering or foam leakage detection methods are mainly adopted at the present stage. The following problems exist in the leakage detection and maintenance of the heat transfer pipe by adopting the method: the device is complex, the operation is complicated, and the leakage heat transfer pipe cannot be positioned rapidly and accurately, so that a large amount of manpower, material resources and time cost are required to be consumed when the unit is overhauled.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a leakage detection device for a heat transfer tube.

The technical scheme adopted for solving the technical problems is as follows: the heat transfer pipe leakage detection device comprises a pressurization module and a leakage blocking module, wherein the pressurization module comprises an inflation interface, an air source interface and a first air pressure gauge communicated with the inflation interface, the inflation interface is in operable communication with the air source interface, and the inflation interface is matched with a pipe orifice at one end of a heat exchange pipe so as to be in sealed communication with the heat exchange pipe;

the plugging module comprises a plugging interface and a second barometer communicated with the plugging interface, and the plugging interface is matched with a pipe orifice at the other end of the heat exchange pipe so as to plug the heat exchange pipe.

Further, preferably, the leak detection device further comprises a hollow first sealing member, and the first sealing member is arranged at the joint of the air inflation interface and the heat transfer tube so as to be in sealing communication with the air inflation interface and the heat transfer tube.

Further, preferably, the leak detection device further comprises a hollow second sealing member, and the second sealing member is arranged at the joint of the leak stopping interface and the heat transfer pipe so as to seal and connect the leak stopping interface and the heat transfer pipe.

Further, a pressurizing control switch member for opening and operatively communicating the inflation port with the air source port is preferably provided between the inflation port and the air source port.

Further, preferably, a pressure release switch is arranged on the pressurizing module, and the pressure release switch is communicated with the inflation interface.

Further, preferably, the leak detection device further comprises an air supply pipeline, one end of the air supply pipeline is connected with an air source, and the other end of the air supply pipeline is communicated with the air source connector.

Further, it is preferable that a control valve is provided on the gas supply line, and a third pressure gauge is provided at an output end of the control valve.

Further, preferably, the pressurizing module includes a pressurizing body and a first holding part connected with the pressurizing body, the inflating interface and the first air pressure gauge are arranged on the pressurizing body, and the air source interface is arranged at the bottom of the first holding part.

Further, preferably, the plugging module comprises a plugging main body and a second holding part connected with the plugging main body, and the plugging interface and the second barometer are arranged on the plugging main body.

The implementation of the utility model has the following beneficial effects: according to the leakage detection device for the heat transfer pipe, the pressurizing module and the leakage blocking module are simultaneously used at the two ends of the same heat transfer pipe, the leakage blocking module is used for sealing one end of the heat transfer pipe, the pressurizing module is communicated with an air source and is used for sealing and communicating the other end of the heat transfer pipe, so that rapid pressurization of heat transfer is realized, whether the heat transfer pipe with the two closed ends can be subjected to pressure maintenance or not is observed by the first pressure gauge and the second pressure gauge at the two ends, the heat transfer pipe can be judged to be undamaged, and leakage can be judged without pressure maintenance, so that the leakage detection device can be used for rapidly detecting and checking the heat transfer pipe; the leak detection device is convenient and quick to operate, accurate and reliable in result, and therefore, the detection efficiency is improved, and the leak detection device is suitable for leak detection of shell-and-tube heat exchangers and other combined pipelines.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of some embodiments of a pressurization module of a heat transfer tube leak detection apparatus of the present utility model;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic diagram of some embodiments of a leak-stopping module of a heat transfer tube leak-detecting apparatus of the present utility model;

fig. 4 is a cross-sectional view of fig. 3.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate that the apparatus or element to be referred to must have specific directions, and thus should not be construed as limiting the present utility model.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present utility model with unnecessary detail.

1-4, in some embodiments of the present utility model, a heat transfer tube leak detection device includes a pressurization module and a leak stopping module, where the pressurization module includes an inflation interface 11, an air source interface 12 and a first air pressure gauge 13 in communication with the inflation interface 11, the inflation interface 11 is in operable communication with the air source interface 12, and the inflation interface 11 is adapted to be in sealed communication with an end of a heat transfer tube; the plugging module comprises a plugging interface 21 and a second barometer 24 communicated with the plugging interface 21, wherein the plugging interface 21 is matched with a pipe orifice at the other end of the heat exchange pipe so as to plug the other end of the heat exchange pipe. It can be understood that the pressurizing module and the plugging module are respectively connected to two ends of the heat exchange tube, the pressurizing module is communicated with an air source through an air source interface 12, and the air source interface is communicated with the inside of the heat exchange tube through an inflation interface 11, so that inflation and pressurization of the heat exchange tube are realized; the plugging module seals and plugs the other end of the heat exchange tube through a plugging interface 21; after the heat exchange tube is pressurized through the pressurizing module, whether the heat exchange tube leaks or not is judged by observing whether the first pressure gauge and the second pressure gauge are pressurized, the heat exchange tube can be judged to be undamaged by pressure maintaining, and the heat exchange tube can be judged to leak without pressure maintaining.

According to the leakage detection device for the heat transfer pipe, the pressurizing module and the leakage blocking module are respectively and simultaneously used at the two ends of the same heat transfer pipe, the leakage blocking module is used for sealing one end of the heat transfer pipe, the pressurizing module is communicated with an air source and is used for sealing and communicating the other end of the heat transfer pipe, so that quick pressurization of heat transfer is realized, whether the heat transfer pipe with the two closed ends can be subjected to pressure maintenance or not is observed by the first pressure gauge and the second pressure gauge at the two ends, the fact that the heat transfer pipe is not damaged can be judged after the pressure maintenance, and leakage can be judged after the pressure maintenance is not carried out, so that the leakage detection device can be used for quick leakage detection and detection of the heat transfer pipe; the leak detection device is convenient to operate, has accurate and reliable results, improves the detection efficiency, and is suitable for leak detection of shell-and-tube heat exchangers and other combined pipelines.

In some embodiments of the present utility model, the leak detection device further comprises a hollow first sealing member 3, wherein the first sealing member 3 is disposed at the connection position of the air charging interface 11 and the heat transfer tube, so as to seal and communicate the air charging interface 11 and the heat transfer tube. The inner diameter of the inner cavity of the first sealing element 3 is matched with the inflation interface 11, the first sealing element 3 is sleeved on the inflation interface 11, the outer diameter of the first sealing element 3 is matched with the inner diameter of the heat transfer tube, and the first sealing element 3 is plugged in the tube orifice of the heat transfer tube so as to seal and communicate the inflation interface 11 with the heat transfer tube, prevent gas leakage and improve the accuracy of leak detection. Further, the first sealing member 3 can be a rubber sealing member, is made of rubber, has certain flexibility and is excellent in sealing effect. Further, in the actual use process, the first sealing elements 3 with different calibers can be selected to adapt to the heat transfer pipes with different calibers, so that the adaptation degree of the device is improved.

In some embodiments of the present utility model, the leak detection device further includes a hollow second sealing member 4, where the second sealing member 4 is disposed at the connection between the leak-stopping interface 21 and the heat transfer tube, so as to seal the leak-stopping interface 21 and the heat transfer tube. The inner diameter of the inner cavity of the second sealing element 4 is matched with the plugging connector 21, the second sealing element 4 is sleeved on the plugging connector 21, the outer diameter of the second sealing element 4 is matched with the inner diameter of the heat transfer pipe, and the second sealing element 4 is plugged in the pipe orifice of the heat transfer pipe so as to realize sealing connection between the plugging connector 21 and the heat transfer pipe, prevent gas leakage and improve the accuracy of leak detection. Further, the second sealing member 4 can be a rubber sealing member, is made of rubber, has certain flexibility and is excellent in sealing effect. Further, in the actual use process, the second sealing piece 4 with different calibers can be selected to adapt to the heat transfer pipes with different calibers, so that the adaptation degree of the device is improved.

In some embodiments of the present utility model, a pressurization control switch 5 for operatively communicating the inflation interface 11 with the air source interface 12 is provided between the inflation interface 11 and the air source interface 12; it can be understood that a chamber is arranged in the pressurizing module, the chamber communicates the air charging interface 11 with the air source interface 12, an air flow channel from the air source interface 12 to the chamber and then to the air charging interface 11 is formed, a pressurizing control switch piece 5 is arranged in the chamber, and the pressurizing control switch piece 5 is used for controlling the communication or closing of the air channel between the air charging interface 11 and the air source interface 12, so that quick air charging pressurization or air charging pressurization stopping is realized.

In some embodiments of the present utility model, the pressurizing module is provided with a pressure release switch 6, and the pressure release switch 6 is communicated with the inflation interface 11; the setting of pressure release switch 6 is used for realizing the quick pressure release of heat transfer pipe, improves detection efficiency and improves the security performance.

In some embodiments of the utility model, the leak detection device further comprises a gas supply line having one end connected to a gas source and the other end in communication with the gas source connection 12. So that an on-site compressed air source can be utilized without an air compressor.

In some embodiments of the utility model, a control valve is provided on the gas supply line, the output of the control valve being provided with a third pressure gauge. The control valve is used for controlling the air supply to charge and discharge the pressurizing module,

in some embodiments of the present utility model, the pressurizing module is in a handheld structure, and includes a pressurizing main body 14 and a first holding part 15 connected to the pressurizing main body 14, the first holding part 15 is configured to be held by hand, the inflating interface 11 and the first air pressure gauge 13 are disposed on the pressurizing main body 14, and the air source interface 12 is disposed at the bottom of the first holding part 15. Further, for convenience of operation, a pressing type pressurization control switch element 5 is provided on the first grip portion 15, and the pressurization control switch element 5 is used for controlling the connection or disconnection between the air source interface 12 and the inflation interface 11. When the pressure-maintaining device is used, the first holding part 15 is held by hand, the inflation interface 11 on the pressurizing main body 14 is aligned to the pipe orifice at one end of the heat transfer pipe, the end of the heat transfer pipe is communicated in a sealing way, when the pressure-maintaining device is inflated and pressurized, the pressurizing control switch piece 5 is pressed to control air to enter from the air source interface 12 at the bottom of the first holding part 15, the heat transfer pipe is inflated and pressurized through the inflation interface 11, and the pressure change of the first air pressure gauge 13 is observed to judge whether the heat transfer pipe maintains pressure. The pressurizing module is arranged into a handheld structure, so that the pressurizing module is convenient to install and use.

In some embodiments of the present utility model, the plugging module is in a handheld structure, the plugging module includes a plugging main body 22 and a second holding part 23 connected with the plugging main body 22, the plugging interface 21 is arranged at the output end of the plugging main body 22, and the second barometer 24 is arranged on the plugging main body; when the pressure-maintaining device is used, the second holding part 23 is held by hand, the plugging connector 21 on the plugging main body 22 is aligned to the pipe orifice at one end of the heat transfer pipe, the end of the heat transfer pipe is sealed, and the pressure change of the second barometer 24 is observed to judge whether the heat transfer pipe maintains pressure. The plugging module is arranged into a handheld structure, so that the plugging module is convenient to install and use.

It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The heat transfer pipe leakage detection device is characterized by comprising a pressurization module and a leakage blocking module, wherein the pressurization module comprises an inflation interface (11), an air source interface (12) and a first air pressure gauge (13) communicated with the inflation interface (11), the inflation interface (11) is in operable communication with the air source interface (12), and the inflation interface (11) is matched with a pipe orifice at one end of a heat exchange pipe so as to be in sealed communication with the heat exchange pipe;

the plugging module comprises a plugging interface (21) and a second barometer (24) communicated with the plugging interface (21), and the plugging interface (21) is matched with a pipe orifice at the other end of the heat exchange pipe so as to plug the heat exchange pipe.

2. The heat transfer tube leak detection device according to claim 1, further comprising a hollow first seal (3), the first seal (3) being disposed at the junction of the inflation port (11) and the heat transfer tube to sealingly communicate the inflation port (11) with the heat transfer tube.

3. The heat transfer tube leak detection device according to claim 1, further comprising a hollow second sealing member (4), wherein the second sealing member (4) is disposed at a connection position of the leak-stopping interface (21) and the heat transfer tube, so as to seal the leak-stopping interface (21) and the heat transfer tube.

4. A heat transfer tube leak detection apparatus according to claim 1, characterized in that a pressurizing control switch member (5) for operatively communicating the inflation port (11) with the air supply port (12) is provided between the inflation port (11) and the air supply port (12).

5. The heat transfer tube leak detection device according to claim 1, wherein a pressure release switch (6) is provided on the pressurizing module, and the pressure release switch (6) is communicated with the inflation interface (11).

6. The heat transfer tube leak detection apparatus as defined in claim 1, further comprising a gas supply line having one end connected to a gas source and the other end in communication with the gas source port (12).

7. The heat transfer tube leak detection apparatus as defined in claim 6, wherein a control valve is provided in the gas supply line, and a third pressure gauge is provided at an output end of the control valve.

8. The heat transfer tube leak detection device according to claim 1, wherein the pressurizing module comprises a pressurizing body (14) and a first holding part (15) connected with the pressurizing body (14), the inflating interface (11) and the first air pressure gauge (13) are arranged on the pressurizing body (14), and the air source interface (12) is arranged at the bottom of the first holding part (15).

9. The heat transfer tube leak detection device according to claim 1, wherein the leak detection module comprises a leak detection main body (22) and a second holding part (23) connected with the leak detection main body (22), and the leak detection interface (21) and the second barometer are arranged on the leak detection main body (22).