CN220912578U

CN220912578U - Pipeline leak detection tool and helium mass spectrum negative pressure leak detection system

Info

Publication number: CN220912578U
Application number: CN202322620565.7U
Authority: CN
Inventors: 杜文清; 何超峰; 王希龙; 孙兴中; 云永琥; 陈伟; 岳泰
Original assignee: Shenzhen Integrated Particle Facility Research Institute
Current assignee: Shenzhen Integrated Particle Facility Research Institute
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-05-07
Anticipated expiration: 2033-09-26

Abstract

The application discloses a pipeline leakage detection tool and a helium mass spectrum negative pressure leakage detection system, and relates to the technical field of vacuum pipeline detection. The pipeline leakage detection tool comprises a connecting assembly, a sealing assembly and a leakage detector joint; the connecting assembly comprises an assembling ring, a locking rod and a connecting rod, wherein the locking rod is detachably connected to the assembling ring along the radial direction of the assembling ring, the locking rod can be telescopically adjusted along the radial direction of the assembling ring, and the connecting rod is connected to one side of the assembling ring along the axial direction of the assembling ring; the sealing component is hermetically connected to one end of the connecting rod, which is far away from the assembly ring, and one side of the sealing component, which is close to the assembly ring, is used for sealing a detection end opening of a pipeline to be detected; a leak detector fitting is coupled to the seal assembly. The pipeline leakage detection tool provided by the application can have higher universality.

Description

Pipeline leak detection tool and helium mass spectrum negative pressure leak detection system

Technical Field

The application relates to the technical field of vacuum pipeline detection, in particular to a pipeline leakage detection tool and a helium mass spectrum negative pressure leakage detection system.

Background

In the industries of low temperature, vacuum, etc., various types of pipes are used in large quantities, and before the pipes are used, the leakage rate of the pipes is usually detected, so as to avoid the risk caused by the leakage of the pipes. Among the methods for detecting leakage of a plurality of pipelines, the helium mass spectrometer negative pressure leakage detection device is widely used because of the advantages of reliable detection result, simple and convenient operation, wide detection range, high sensitivity, low cost and the like.

The helium mass spectrometer negative pressure leakage detection device is generally provided with an assembly fixture for connecting a pipeline and a leakage detector, wherein one end of the pipeline can be sealed by a cover plate, and the other end of the pipeline is connected with the leakage detector through the assembly fixture. However, the existing assembly fixture is only applicable to pipelines with single pipe diameters, and the universality is crossed. When the pipeline types are more, each pipeline needs to be provided with an assembly tool, and the input cost is high.

Disclosure of utility model

The application provides a pipeline leakage detection tool and a helium mass spectrometer negative pressure leakage detection system, which are used for improving the universality of the pipeline leakage detection tool.

The application provides a pipeline leakage detection tool, which comprises:

The connecting assembly comprises an assembling ring, a locking rod and a connecting rod, wherein the locking rod is detachably connected to the assembling ring along the radial direction of the assembling ring, the locking rod can be telescopically adjusted along the radial direction of the assembling ring, and the connecting rod is connected to one side of the assembling ring along the axial direction of the assembling ring;

The sealing component is connected with one end of the connecting rod, which is far away from the assembly ring, in a sealing way, and one side of the sealing component, which is close to the assembly ring, is used for sealing a detection end opening of a pipeline to be detected; and

A leak detector fitting is coupled to the seal assembly.

Based on the technical scheme, when the pipe diameter of the pipeline to be detected is greater than or equal to the outer diameter of the assembly ring, the assembly ring can be arranged in the pipeline to be detected, and the assembly ring and the pipeline to be detected can be locked and fixed through the locking rod. When the pipe diameter of the pipe to be detected is smaller than or equal to the inner diameter of the assembly ring, the assembly ring can be sleeved on the outer side of the pipe to be detected, and the assembly ring and the pipe to be detected can be locked and fixed through the locking rod. Therefore, the connection between the pipeline leakage detection tool and the pipeline to be detected can be realized, the pipeline leakage detection tool can be suitable for pipelines to be detected with different pipe diameters, the universality is higher, and the cost investment is reduced.

In some possible embodiments, the connection assembly includes three locking bars, which are uniformly spaced apart along the circumference of the mounting ring.

In some possible embodiments, the axial dimension of the locking bar is less than or equal to the inner diameter of the mounting ring.

In some possible embodiments, the locking bar is threaded with the mounting ring.

In some possible embodiments, the seal assembly comprises a carrier plate and a gasket, the carrier plate being connected to an end of the connecting rod remote from the mounting ring;

The sealing gasket is arranged on one side, close to the assembly ring, of the bearing plate, and the sealing gasket is used for sealing the opening of the detection end.

In some possible embodiments, the sealing assembly further comprises a shaft sleeve and a sealing ring, wherein the shaft sleeve penetrates through the bearing plate and the sealing gasket, and the sealing ring is arranged on the inner side of the shaft sleeve;

the connecting rod passes through the shaft sleeve, and the sealing ring is extruded between the connecting rod and the shaft sleeve.

In some possible embodiments, an annular assembly groove is formed in the inner side of the shaft sleeve, the sealing ring is arranged in the assembly groove to limit the sealing ring to move along the axial direction of the shaft sleeve, and the sealing ring protrudes relative to one side, close to the connecting rod, of the assembly groove.

In some possible embodiments, a vacuum grease is applied between the seal ring and the inner wall of the assembly groove.

In some possible embodiments, the sealing assembly further comprises a locking nut in threaded engagement with the connecting rod, the locking nut abutting against a side of the carrier plate remote from the gasket.

In addition, the application also provides a helium mass spectrometer negative pressure leakage detection system, which comprises the pipeline leakage detection tool provided in the embodiment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 illustrates a schematic diagram of a pipe leak detection tool in some embodiments;

FIG. 2 is a schematic diagram illustrating a cross-sectional structure of a pipe leak detection tool in some embodiments;

FIG. 3 is a schematic view showing a partially enlarged structure of the portion A in FIG. 2;

FIG. 4 illustrates a schematic perspective view of a connection assembly in some embodiments;

FIG. 5 illustrates a schematic cross-sectional view of a seal assembly in some embodiments;

FIG. 6 is a schematic diagram illustrating a cross-sectional configuration of a pipe leak detection tool in use according to some embodiments;

FIG. 7 is a schematic diagram illustrating another cross-sectional configuration of a pipe leak detection tool in use in some embodiments.

Description of main reference numerals:

1000-pipeline leakage detection tool;

A 100-connection assembly; 110-fitting ring; 111-an internally threaded bore; 120-locking bar; 130-connecting rods;

200-a seal assembly; 210-a carrier plate; 220-sealing gasket; 230-shaft sleeve; 231-fitting groove; 240-sealing ring; 250-locking the nut;

300-leak detector joint;

2000-the pipe to be tested.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," 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. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

As shown in fig. 1, 6 and 7, in the embodiment, a pipe leakage detection tool 1000 is provided, which can be used in a helium mass spectrometer negative pressure leakage detection system, is used for realizing connection between a pipe 2000 to be detected and a leakage detector, and can detect whether the pipe 2000 to be detected has a leakage problem.

As shown in fig. 1 and 2, a pipe leak detection tool 1000 may include a connection assembly 100, a seal assembly 200, and a leak detector joint 300. The connection assembly 100 may include, among other things, a mounting ring 110, a locking lever 120, and a connecting lever 130.

Referring to fig. 6 and fig. 7 together, in the embodiment, the assembly ring 110 may be sleeved on the outer side of the pipe 2000 to be detected or disposed inside the pipe 2000 to be detected according to the pipe diameter of the pipe 2000 to be detected (refer to the diameter of the pipe 2000 to be detected).

Specifically, when the pipe diameter of the pipe 2000 to be inspected is equal to or greater than the outer diameter of the fitting ring 110, the fitting ring 110 may be disposed inside the pipe 2000 to be inspected. When the pipe diameter of the pipe 2000 to be detected is smaller than or equal to the inner diameter of the fitting ring 110, the fitting ring 110 may be sleeved outside the pipe 2000 to be detected.

The locking lever 120 may be detachably coupled to the mounting ring 110 in a radial direction of the mounting ring 110. In addition, the locking lever 120 is telescopically adjustable in the radial direction of the fitting ring 110. It can be appreciated that when the fitting ring 110 is disposed inside the pipe 2000 to be detected, the locking rod 120 can be gradually extended relative to the outer side of the fitting ring 110 to be abutted against the inner wall of the pipe 2000 to be detected, so as to realize the fixed connection between the connecting assembly 100 and the pipe 2000 to be detected.

When the assembly ring 110 is sleeved on the outer side of the pipe 2000 to be detected, the locking rod 120 can be gradually extended relative to the inner side of the assembly ring 110 to be abutted against the outer wall of the pipe 2000 to be detected, so as to realize the fixed connection between the connecting assembly 100 and the pipe 2000 to be detected.

The connection rod 130 may be connected to one side of the mounting ring 110. In an embodiment, when the mounting ring 110 is fixed relative to the pipe 2000 to be inspected, the connecting rod 130 may be located at a side of the mounting ring 110 near the opening of the inspection end of the pipe 2000 to be inspected.

As shown in fig. 1, 2, 6 and 7, the sealing assembly 200 is sealingly connected to the end of the connecting rod 130 remote from the mounting ring 110, and the sealing assembly 200 can be used to close the opening of the inspection end of the pipe 2000 to be inspected so as to seal the pipe 2000 to be inspected.

Leak detector joint 300 may be connected to seal assembly 200. It will be appreciated that leak detector fitting 300 may be in communication with the interior of pipe 2000 to be detected at one end and may be used to connect a leak detector at the other end.

The connection assembly 100 provided in the embodiment can be connected to the to-be-detected pipelines 2000 with different pipe diameters, so as to realize the connection of the pipeline leakage detection tool 1000 and the to-be-detected pipelines 2000 with different pipe diameters. Therefore, the universality of the pipeline leakage detection tool 1000 can be improved, and the cost investment is reduced.

Further, as shown in fig. 4, in some embodiments, the connection assembly 100 may include three locking bars 120. The three locking bars 120 may be uniformly spaced along the circumference of the mounting ring 110. In addition, the axial dimension of the locking rod 120 may be equal to or smaller than the inner diameter of the mounting ring 110, and smooth mounting/dismounting of the locking rod 120 to/from the mounting ring 110 may be ensured.

In other embodiments, the connection assembly 100 may also include two, five, or six, etc. locking bars 120, and the plurality of locking bars 120 may be uniformly spaced along the circumference of the mounting ring 110.

Referring again to fig. 2, in some embodiments, the locking bar 120 may be a screw, and the locking bar 120 may be screwed to the mounting ring 110. Accordingly, the fitting ring 110 may be provided with an internally threaded hole 111 extending radially therealong. The locking bar 120 may be provided with external threads and fit into the internally threaded bore 111. In one aspect, a removable connection between the locking bar 120 and the mounting ring 110 may be achieved. The locking bar 120 may be inserted into the internal screw hole 111 from the inside and the outside of the fitting ring 110, respectively, and screwed, to achieve the connection of the locking bar 120 with the fitting ring 110. On the other hand, the locking lever 120 may be rotated with respect to the fitting ring 110 to adjust the protruding length of the locking lever 120 with respect to the inside or outside of the fitting ring 110.

Still further, as will be understood from the combination of fig. 6 and 7, when the fitting ring 110 is positioned inside the pipe 2000 to be inspected, the locking bar 120 may be inserted into the internally threaded hole 111 from the inside of the fitting ring 110 and protrude with respect to the side of the fitting ring 110 near the inner wall of the pipe 2000 to be inspected, i.e., the locking bar 120 protrudes with respect to the outside of the fitting ring 110. In the assembly process, the locking rod 120 can be continuously rotated, so that one side of the locking rod 120, which is close to the inner wall of the pipeline 2000 to be detected, relative to the assembly ring 110 is continuously extended, and the locking rod 120 is tightly abutted against the inner wall of the pipeline 2000 to be detected, so that fixation is realized. Thus, a fixed connection of the connection assembly 100 with the pipe 2000 to be inspected can be achieved.

When the fitting ring 110 is fitted over the outside of the pipe 2000 to be inspected, the locking rod 120 may be inserted into the internally threaded hole 111 from the outside of the fitting ring 110 and protrude with respect to the inside of the fitting ring 110. In the assembly process, the locking rod 120 can be continuously rotated, so that the locking rod 120 is continuously extended relative to one side of the inner side of the assembly ring 110, and is tightly abutted against the outer wall of the pipeline 2000 to be detected to realize fixation. Thus, a fixed connection of the connection assembly 100 with the pipe 2000 to be inspected can be achieved.

In other embodiments, the locking bar 120 may alternatively be a smooth-surfaced rod-like structure. The assembly ring 110 may be provided with a connecting hole with a smooth inner wall, and the locking rod 120 may be inserted into the connecting hole in a tight fit manner. It will be appreciated that the locking bar 120 may remain stationary relative to the mounting ring 110 when not subjected to an external force.

As shown in fig. 2 to 4, the connection rod 130 may be fixedly coupled to one side of the mounting ring 110. When the fitting ring 110 is fixedly connected to the pipe 2000 to be inspected, the connecting rod 130 may be located at a side of the fitting ring 110 close to the opening of the inspection end of the pipe 2000 to be inspected.

In some embodiments, the connection assembly 100 may include three connection bars 130, the three connection bars 130 may be uniformly spaced along the circumference of the assembly ring 110, and the three connection bars 130 may be offset from the three locking bars 120.

In other embodiments, the connecting rod 130 may be provided in a plurality of two, four, or six.

In an embodiment, one end of the connection rod 130 may be fixedly coupled to the mounting ring 110 by welding.

In other embodiments, the connecting rod 130 may be fixedly connected to the mounting ring 110 by an interference fit or a screw connection.

As shown in fig. 2, 3 and 5, the seal assembly 200 may include a carrier plate 210 and a gasket 220. The carrier plate 210 may be connected to an end of the connecting rod 130 away from the mounting ring 110, so as to connect the sealing assembly 200 and the connecting assembly 100.

The gasket 220 may be disposed on a side of the carrier plate 210 adjacent to the mounting ring 110. In some embodiments, a vacuum grease is also applied between the gasket 220 and the carrier plate 210. In one aspect, the gasket 220 may be fixed to one side of the carrier plate 210. On the other hand, sealing between the gasket 220 and the carrier plate 210 may be further achieved.

In some embodiments, seal assembly 200 further includes a sleeve 230. The sleeve 230 may be disposed through the carrier 210 and the gasket 220. And both ends of the sleeve 230 are exposed. Specifically, one end of the sleeve 230 may protrude with respect to a side of the gasket 220 away from the carrier plate 210, and the other end of the sleeve 230 may be flush with and exposed from a surface of the side of the carrier plate 210 away from the gasket 220. In addition, the shaft sleeve 230 may be fixedly coupled to the carrier plate 210 by welding.

In other embodiments, the shaft sleeve 230 and the bearing plate 210 may be fixedly connected by an interference fit or a screw connection.

In an embodiment, an end of the connecting rod 130 away from the mounting ring 110 may be disposed through the shaft sleeve 230 and connected with the shaft sleeve 230 in a sealing manner. It is understood that the seal assembly 200 may include three bushings 230, which may be disposed in one-to-one correspondence with the three connecting rods 130. The three connecting rods 130 may be inserted into the three shaft sleeves 230 in a one-to-one correspondence.

In addition, a sealing ring 240 is further disposed on the inner side of the shaft sleeve 230, and the sealing ring 240 is compressible between the shaft sleeve 230 and the connecting rod 130, so that the sealing connection between the shaft sleeve 230 and the connecting rod 130 can be realized.

In some embodiments, the inner side of the sleeve 230 is also provided with an annular fitting groove 231. The seal 240 may be fixedly disposed in the fitting groove 231, and movement of the seal 240 in the axial direction of the sleeve 230 may be restricted. In addition, vacuum grease is coated between the seal ring 240 and the inner wall of the assembly groove 231, so that the seal ring 240 can be fixed in the assembly groove 231, and the seal between the seal ring 240 and the assembly groove 231 can be further realized.

In an embodiment, the sealing ring 240 may protrude with respect to a side of the fitting groove 231 remote from the carrier plate 210, i.e., the sealing ring 240 protrudes with respect to an opening side of the fitting groove 231. In addition, the inner diameter of the seal ring 240 when not compressed may be smaller than the outer diameter of the connecting rod 130 at the location for connecting the seal assembly 200. Accordingly, when the connecting rod 130 is inserted into the shaft sleeve 230, the sealing ring 240 can be compressed between the connecting rod 130 and the shaft sleeve 230, so as to seal the connection position between the connecting rod 130 and the shaft sleeve 230.

In some embodiments, the seal assembly 200 further includes a lock nut 250. During assembly, the locking nut 250 can be screwed to the end of the connecting rod 130 away from the assembly ring 110 and is abutted to the side of the bearing plate 210 away from the sealing pad 220, so that the sealing pad 220 can be tightly pressed on the pipeline 2000 to be detected, and the opening of the detection end of the pipeline 2000 to be detected can be sealed. Accordingly, the end of the connecting rod 130 remote from the mounting ring 110 may be provided with external threads that mate with the locking nut 250.

In other embodiments, the sealing ring 240 may be directly embedded in the carrier plate 210, and the connecting rod 130 may directly penetrate through the carrier plate 210 and press the sealing ring 240 to seal the connection position. The connection rod 130 and the sealing assembly 200 can be fixed by friction force between the connection rod 130 and the sealing ring 240, so that the sealing assembly 200 is prevented from moving towards one end far away from the pipeline 2000 to be detected.

As shown in fig. 6 and 7, leak detector joint 300 may be sealingly connected to carrier plate 210 by welding, screwing, etc., and leak detector joint 300 may be disposed through gasket 220 and extend to a side of gasket 220 away from carrier plate 210, and may be in communication with pipe 2000 to be detected. The other end of leak detector fitting 300 may protrude from the side of carrier plate 210 remote from gasket 220 and may be used to connect a leak detector.

The embodiment also provides a helium mass spectrometer negative pressure leakage detection system, which can comprise the pipeline leakage detection tool 1000 provided in the embodiment. Leak detector connector 300 is connectable to a leak detector in a helium mass spectrometer negative pressure leak detection system.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims

1. The utility model provides a pipeline leak hunting frock which characterized in that includes:

A leak detector fitting is coupled to the seal assembly.

2. The pipe leak detection tool of claim 1, wherein the connection assembly comprises three locking bars, the three locking bars being evenly spaced along the circumference of the mounting ring.

3. The pipe leak detection tool of claim 2, wherein the axial dimension of the locking rod is less than or equal to the inner diameter of the mounting ring.

4. A pipe leak detection tool as defined in any one of claims 1 to 3, wherein the locking rod is threaded with the mounting ring.

5. The pipe leak detection tool of claim 1, wherein the seal assembly comprises a carrier plate and a gasket, the carrier plate being connected to an end of the connecting rod remote from the mounting ring;

6. The pipe leak detection tool of claim 5, wherein the sealing assembly further comprises a shaft sleeve and a sealing ring, the shaft sleeve is arranged on the bearing plate and the sealing gasket in a penetrating manner, and the sealing ring is arranged on the inner side of the shaft sleeve;

7. The pipe leak detection tool of claim 6, wherein an annular assembly groove is formed in the inner side of the shaft sleeve, the sealing ring is arranged in the assembly groove to limit the sealing ring to move along the axial direction of the shaft sleeve, and the sealing ring protrudes relative to one side, close to the connecting rod, of the assembly groove.

8. The pipe leak detection tool of claim 7, wherein a vacuum grease is applied between the seal ring and the inner wall of the assembly groove.

9. A pipe leak detection tool as defined in any one of claims 5 to 8, wherein the seal assembly further comprises a lock nut threadably engaged with the connecting rod, the lock nut abutting a side of the carrier plate remote from the gasket.

10. A helium mass spectrometer negative pressure leak detection system comprising a pipe leak detection tool according to any one of claims 1 to 9.