CN209841284U

CN209841284U - Leak detection device

Info

Publication number: CN209841284U
Application number: CN201920328819.9U
Authority: CN
Inventors: 郭伟明
Original assignee: Zhuhai Dun'an Thermal Engineering Technology Co Ltd
Current assignee: Zhuhai Dun'an Thermal Engineering Technology Co Ltd
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2019-12-24
Anticipated expiration: 2029-03-14

Abstract

The utility model discloses a leak detection device, including the core that has the die cavity, the pipe box and the excircle cover that cup joint in the core and lean against each other, the pipe box can be connected fixedly with the pipeline; one end of the core body extending out of the pipe sleeve is connected with a limiting piece, a sealing gasket is sleeved on the part of the core body arranged between the limiting piece and the pipe sleeve, and the limiting piece and the sealing gasket extend into the pipeline and are contacted with the inner wall of the pipeline; one end of the core body extending out of the outer circular sleeve is hinged with a locking rod, the locking rod can abut against the outer circular sleeve and turn over relative to the core body so as to pull the core body, the movement of the core body can drive the limiting part to extrude the sealing gasket, so that the sealing gasket is expanded, and the expanded sealing gasket can be in sealing fit with the pipeline; be provided with attach fitting on the core, attach fitting can be connected with external air supply to guide compressed gas to enter into to the pipeline through the die cavity of core. The utility model discloses not only work efficiency is high, can realize the overhaul fast, and the leakproofness when being assembled between this leak hunting device and the pipeline is good.

Description

Leak detection device

Technical Field

The utility model belongs to the technical field of the pipeline is leak hunting is relevant, especially relates to a leak hunting device.

Background

The heat exchanger is a device for transferring partial heat of hot fluid to cold fluid, and enterprises need to perform leak detection on the heat exchanger during production and preparation of the heat exchanger.

At present, in the prior art, for a pipeline with a threaded design, especially when a water coil pipe is subjected to leak detection, because the gas pressure used during leak detection is high, an external nut is required to be tightly connected to a threaded structure of the pipeline in a wrench screwing mode, and the external nut and the pipeline are in sealed fit by utilizing the threaded structure matched with each other.

Above-mentioned mode carries out the leak hunting to the pipeline, and owing to adopt screw-thread fit's mode to realize the connection between outer nut and the pipeline sealed, its leakproofness that corresponds is poor, and adopts the mode of spanner to twist soon, and its work efficiency who corresponds is low, has the possibility that the pipeline buckles moreover, can not satisfy the user demand of enterprise to the heat exchange tube leak hunting well.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a leak detection apparatus for detecting a leak.

The leakage detecting device is used for detecting leakage of a pipeline and comprises a core body with a cavity, a pipe sleeve and an outer circle sleeve, wherein the pipe sleeve is sleeved on the core body and abutted against the core body, and the pipe sleeve can be fixedly connected with the pipeline; one end of the core body, extending out of the pipe sleeve, is connected with a limiting piece, a sealing gasket is sleeved on the part of the core body, which is arranged between the limiting piece and the pipe sleeve, and the limiting piece and the sealing gasket extend into the pipeline and are in contact with the inner wall of the pipeline; one end, extending out of the outer circular sleeve, of the core body is hinged with a locking rod, the locking rod is abutted against the outer circular sleeve and can be turned relative to the core body so as to pull the core body, the movement of the core body can drive the limiting piece to extrude the sealing gasket, so that the sealing gasket is expanded, and the expanded sealing gasket can be in sealing fit with the pipeline; the core body is provided with a connecting joint, and the connecting joint can be connected with an external air source to guide compressed air to enter the pipeline through the cavity of the core body.

As the utility model discloses a preferred scheme, attach fitting sets up to quick-operation joint, quick-operation joint's exit end insert extremely in the core, and with the die cavity intercommunication of core.

As the utility model discloses an optimized scheme, the outer round is sheathe in and has been seted up and has been lacked the groove, quick-operation joint sets up the position department at the position of lacked the groove place on the outer round, and with the core is connected fixedly.

As the utility model discloses an optimal scheme, the excircle cover is kept away from the one end spiro union of pipe box has adjusting nut, adjusting nut for the excircle cover position is adjustable, just the check lock lever supports and leans on adjusting nut is last.

As the preferred scheme of the utility model, adjusting nut with the position department that the check lock lever contacted is provided with the gasket, the check lock lever supports and leans on the gasket.

As the utility model discloses a preferred scheme, the quantity that has cup jointed sealed pad on the core is a plurality of, and separates with first spacer ring between two arbitrary adjacent sealed pads.

As the utility model discloses a preferred scheme, two sealed pads have been cup jointed on the core, one of them sealed pad with separate with the second spacer ring between the locating part, another sealed pad with separate with the third spacer ring between the pipe box.

As the utility model discloses a preferred scheme, the locating part sets up to lock nut, the lock nut spiro union is in on a side end of core.

As the preferred scheme of the utility model, be provided with the internal thread on the pipe box, be used for matcing external screw thread on the pipeline.

As the utility model discloses an optimal scheme, be provided with the connector on the check lock lever, be provided with on the core and connect the flange, connect the flange stretch into extremely the connector, and with the connector is articulated.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model provides a leak hunting device sets up through reasonable structure for leak hunting device can insert the core one end that is connected with the locating part to the pipeline in at the during operation to be connected fixedly with pipe box and pipeline, with this assembly between realizing this leak hunting device and the pipeline, wherein the locating part with sealed pad stretches into in the pipeline and with the contact of pipeline inner wall, then through upset check lever, with the sealed pad that utilizes the inflation and the pipeline realize sealed cooperation, its not only work efficiency is high, can realize the overhaul fast, has ensured both leakproofness when this leak hunting device and pipeline be connected moreover, has also avoidd simultaneously because of overhauing the pipeline and has caused the situation that the pipeline bends often to take place.

Drawings

Fig. 1 is a cross-sectional view of a leak detection apparatus according to an embodiment of the present invention.

Fig. 2 is an exploded view from another perspective of the leak detection apparatus of fig. 1.

Wherein, 10, the core body; 11. a cavity; 12. connecting the convex plate; 20. pipe sleeve; 21. an internal thread; 30. an outer circular sleeve; 31. adjusting the nut; 32. a gasket; 33. notching; 40. a limiting member; 50. a gasket; 51. a first spacer ring; 52. a second spacer ring; 53. a third spacer ring; 60. a locking lever; 61. a connector; 70. and connecting the joints.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The utility model discloses a leak hunting device of claim for carry out the leak hunting to the pipeline, specifically through the shutoff pipeline to the leak hunting to the pipeline is realized to the leak hunting of pipeline to the form of input compressed gas in the pipeline, the utility model discloses the leak hunting device of claim preferably is applied to and carries out the leak hunting to the dish water pipe on the heat exchange tube.

Referring to fig. 1 and 2, a leak detection apparatus according to an embodiment of the present invention includes a core 10 having a cavity 11, a pipe sleeve 20, an outer circular sleeve 30, a limiting member 40, a sealing gasket 50, a locking rod 60, and a connection joint 70, wherein the pipe sleeve 20 and the outer circular sleeve 30 are sleeved on the core 10 and are abutted against each other, the limiting member 40 is fixedly connected to one end of the core 10 extending out of the pipe sleeve 20, the locking rod 60 is hinged to one end of the core 10 extending out of the outer circular sleeve 30, and the sealing gasket 50 is sleeved on a portion of the core 10 between the limiting member 40 and the pipe sleeve 20.

In the present embodiment, the pipe sleeve 20 is used for connecting and fixing with the pipeline, and preferably, the pipe sleeve 20 is provided with an internal thread 21 for matching with an external thread on the pipeline, that is, the pipe sleeve 20 of the present embodiment is connected and fixed with the pipeline in a thread fit manner, so that the assembly between the pipe sleeve 20 and the pipeline is facilitated. That is, in operation of the leak detection apparatus, the end of the core 10 to which the stopper 40 is attached may be inserted into the pipe, and then the leak detection apparatus may be assembled to the pipe by screw-fitting the sleeve 20 to the pipe.

As described above, the pipe sleeve 20 is sleeved on the core 10 and can rotate relative to the core 10, and the pipe sleeve 20 can connect and fix the pipe sleeve 20 and the pipeline in a screw-fit manner, so that the leak detection device of the present embodiment can connect the pipe sleeve 20 to the pipeline in a manual screwing manner when in use, thereby improving the working efficiency, and avoiding the bending of the pipeline caused by screwing with a wrench.

In the present embodiment, an adjusting nut 31 is screwed on an end of the outer circular sleeve 30 away from the socket 20, and the locking rod 60 abuts against the adjusting nut 31. The adjusting nut 31 is adjustable in position relative to the outer circular sleeve 30, specifically, the adjusting nut 31 can be adjusted in assembly position on the outer circular sleeve 30 by adjusting the threaded fit between the adjusting nut 31 and the outer circular sleeve 30, that is, when the leak detection device of the present embodiment is used, the degree of compression of the outer circular sleeve 30 by the locking rod 60 can be adjusted by adjusting the assembly position between the outer circular sleeve 30 and the adjusting nut 31, so that the leak detection device is ensured to be assembled on a pipeline, and the leak detection device can be sealed and matched with the pipeline by driving the locking rod 60.

Furthermore, a gasket 32 is arranged at a position where the adjusting nut 31 contacts the locking rod 60, and the locking rod 60 abuts against the gasket 32 to increase the stressed contact area of the adjusting nut 31 and reduce the stressed pressure of the adjusting nut 31, so that the adjusting nut 31 is protected.

In the present embodiment, the limiting member 40 is provided as a lock nut, and the lock nut is disposed at one side end of the core 10 in a threaded manner, so as to facilitate the assembly and disassembly between the limiting member 40 and the core 10.

It will be appreciated that when the gasket 50 expands and engages the conduit in contact therewith, a fitting seal between the leak detection device and the conduit is achieved, thereby ensuring a seal between the leak detection device and the conduit when the leak detection device is fitted to the conduit.

In the present embodiment, the core 10 is sleeved with a plurality of gaskets 50, and any two adjacent gaskets 50 are separated by a first spacer ring 51. It will be appreciated that each of the gaskets 50 is adapted to be capable of sealing against a pipe, i.e., each of the gaskets 50 is adapted to be a sealing point of the leak detection apparatus in assembly connection with a pipe, and the present embodiment further ensures the sealing performance between the leak detection apparatus and a pipe in assembly connection with the pipe by virtue of the structural arrangement of the plurality of gaskets 50.

Specifically, the leak detection device of the present embodiment has two gaskets 50 fitted around the core 10, one of the gaskets 50 is separated from the stopper 40 by a second spacer ring 52, and the other of the gaskets 50 is separated from the socket 20 by a third spacer ring 53.

In this embodiment, one end of the locking rod 60 hinged to the core 10 abuts against the outer circular sleeve 30, and the locking rod 60 can be turned over relative to the core 10. Since the outer circular sleeve 30 and the pipe sleeve 20 abut against each other, and the pipe sleeve 20 is connected and fixed with the pipeline, when the locking rod 60 of the present embodiment abuts against the outer circular sleeve 30 and is turned over relative to the core 10, the locking rod 60 can pull the core 10 in a direction away from the pipeline, and the movement of the core 10 can simultaneously drive the limiting member 40 to press the sealing gasket 50, so that the sealing gasket 50 is expanded, and the expanded sealing gasket 50 can be in sealing fit with the inner wall of the pipeline, thereby sealing the pipeline by the leak detection device. That is, when the leak detection device of the present embodiment is assembled to a pipe, the leak detection device and the pipe can be sealingly engaged by turning the lock lever 60.

Specifically, be provided with connector 61 on the check lock 60, be provided with on the core 10 and connect flange 12, connect flange 12 part stretch into to connector 61, and with connector 61 is articulated, with this realization check lock 60 with articulated between the core 10. The connector 61 of the locking lever 60 abuts against the washer 32.

The connecting joint 70 is used for connecting with an external air source, so that compressed air is guided into the pipeline through the cavity 11 of the core body 10, and the pipeline is subjected to leak detection by the compressed air.

In the present embodiment, the connection joint 70 is provided as a quick joint, and an outlet end of the quick joint is inserted into the core body 10 and is communicated with the cavity 11 of the core body 10, that is, the quick joint of the present embodiment is fixedly connected to the core body 10. For this purpose, the outer circular sleeve 30 of the present embodiment is provided with a notch 33 to avoid the quick coupling, and the quick coupling is disposed at the position of the notch 33 on the outer circular sleeve 30 and is connected and fixed with the core 10,

to sum up, the utility model provides a leak hunting device sets up through reasonable structure for leak hunting device can insert the core one end that is connected with the locating part to the pipeline in at the during operation to be connected fixedly with pipe box and pipeline, with this assembly between this leak hunting device and the pipeline of realization, wherein the locating part with sealed pad stretches into in the pipeline and with the contact of pipeline inner wall, then through upset check lever, with the sealed pad that utilizes the inflation and realize sealed cooperation with the pipeline, its not only work efficiency is high, can realize quick maintenance, has ensured moreover that this leak hunting device and pipeline be assembled between each other's leakproofness when connecting, has also avoidd simultaneously because of overhauing the pipeline and has caused the situation emergence that the pipeline bent often.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a leak hunting device for leak hunting the pipeline, its characterized in that: the pipeline comprises a core body with a cavity, a pipe sleeve and an outer circle sleeve, wherein the pipe sleeve and the outer circle sleeve are sleeved on the core body and are abutted against each other; one end of the core body, extending out of the pipe sleeve, is connected with a limiting piece, a sealing gasket is sleeved on the part of the core body, which is arranged between the limiting piece and the pipe sleeve, and the limiting piece and the sealing gasket extend into the pipeline and are in contact with the inner wall of the pipeline; one end, extending out of the outer circular sleeve, of the core body is hinged with a locking rod, the locking rod is abutted against the outer circular sleeve and can be turned relative to the core body so as to pull the core body, the movement of the core body can drive the limiting piece to extrude the sealing gasket, so that the sealing gasket is expanded, and the expanded sealing gasket can be in sealing fit with the pipeline; the core body is provided with a connecting joint, and the connecting joint can be connected with an external air source to guide compressed air to enter the pipeline through the cavity of the core body.

2. Leak detection apparatus according to claim 1, wherein: the connecting joint is a quick joint, and the outlet end of the quick joint is inserted into the core body and communicated with the cavity of the core body.

3. Leak detection apparatus according to claim 2, wherein: the outer circle sleeve is provided with a notch, and the quick connector is arranged at the position where the notch is arranged on the outer circle sleeve and is fixedly connected with the core body.

4. Leak detection apparatus according to claim 1, wherein: the outer circle sleeve is in threaded connection with an adjusting nut at one end far away from the pipe sleeve, the adjusting nut is adjustable in position relative to the outer circle sleeve, and the locking rod abuts against the adjusting nut.

5. Leak detection apparatus according to claim 4, wherein: and a gasket is arranged at the position where the adjusting nut is contacted with the locking rod, and the locking rod is abutted against the gasket.

6. Leak detection apparatus according to claim 1, wherein: the core body is sleeved with a plurality of sealing gaskets, and any two adjacent sealing gaskets are separated by a first spacer ring.

7. Leak detection apparatus according to claim 6, wherein: two sealing gaskets are sleeved on the core body, one of the sealing gaskets is separated from the limiting part by a second spacer ring, and the other sealing gasket is separated from the pipe sleeve by a third spacer ring.

8. Leak detection apparatus according to claim 1, wherein: the limiting part is arranged as a locking nut which is in threaded connection with the end part on one side of the core body.

9. Leak detection apparatus according to claim 1, wherein: the pipe sleeve is provided with an internal thread for matching with the external thread on the pipeline.

10. Leak detection apparatus according to claim 1, wherein: the locking lever is provided with a connector, the core is provided with a connecting convex plate, and the connecting convex plate extends into the connector and is hinged with the connector.