A pipe leak detection fixture

Abstract

The utility model discloses a pipe leak detection jig, comprising a first leak detection station and a second leak detection station; a leak detection mechanism and a first positioning clamping mechanism are arranged at the first leak detection station; the leak detection mechanism comprises a leak detection joint, the leak detection joint has a connected air inlet and an exhaust port, the second leak detection station is provided with a second positioning clamping mechanism and a pushing and plugging mechanism; the pushing and plugging mechanism comprises a first driving device and a plugging piece, the first driving device drives the plugging piece to reciprocate left and right toward the second positioning clamping mechanism; the first positioning clamping mechanism and the second positioning clamping mechanism are used to clamp and fix the pipe respectively, and then the openings at both ends of the pipe are sealed by the cooperation of the leak detection joint and the plugging piece, so that the inner cavity of the pipe forms a closed space, and gas is injected into the closed inner cavity from the exhaust port to perform air tightness detection of the pipe.

Description

Technical Field

[0001] The utility model relates to the field technology of pipe leak detection fixtures, in particular to a pipe leak detection fixture. Background Art

[0002] Most of the existing pipe leak detection processes are carried out one by one after the cutting is completed. This detection requires a lot of manpower and material resources. Failure to detect the leak of the entire pipe before cutting also means that defects cannot be discovered in time. If there are leaks in the entire pipe and they are not discovered before cutting, and the leaks are detected after the cutting is completed, the cutting work will cause unnecessary waste.

[0003] In the existing pipe air tightness test, the operator manually inserts one end of the pipe into the plug, passes high-pressure gas into the other end, and then immerses the pipe in water. The operator observes whether there are bubbles at the pipe welding position. During the entire air tightness test process, the inside of the product is under high pressure. If the plug is not tightly connected to the pipe, the plug will pop out, resulting in low detection accuracy and low operating efficiency.

[0004] Later, a device for detecting air tightness of pipes appeared on the market. In the pipe air tightness detection and processing industry, automatic machines are generally used for assembly and detection. Although its production efficiency is high, the automatic equipment is expensive and is not suitable for small batch and multi-specification pipe detection and processing.

[0005] Therefore, it is necessary to study a new technical solution to solve the above problems. Utility Model Content

[0006] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide a pipe leak detection fixture, which, through the design of a first leak detection station and a second leak detection station, effectively solves the problems of low production efficiency, high human resource consumption and high labor intensity of operators in the traditional technology of manual plugging.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A pipe leak detection fixture comprises a first leak detection station and a second leak detection station, wherein the first leak detection station and the second leak detection station are arranged at a relative distance to form a clamping space;

[0009] The first leak detection station is provided with a leak detection mechanism and a first positioning and clamping mechanism for clamping the pipe; the leak detection mechanism is located beside the first positioning and clamping mechanism; the leak detection mechanism includes a leak detection joint for blocking an opening at one end of the pipe, the leak detection joint has an air inlet and an air outlet connected to each other, the air inlet is used to connect to an external pressure gas source; the air outlet is directly opposite to one end of the first positioning and clamping mechanism, and the air inlet is located beside the air outlet;

[0010] The second leak detection station is provided with a second positioning and clamping mechanism for clamping the pipe and a pushing and blocking mechanism for blocking the opening at the other end of the pipe; the pushing and blocking mechanism is located on the side of the second positioning and clamping mechanism, and the pushing and blocking mechanism includes a first driving device and a blocking piece, and the first driving device drives the blocking piece to reciprocate left and right toward the second positioning and clamping mechanism.

[0011] As a preferred solution, the first positioning and clamping mechanism includes a first clamping member, a second clamping member and a second driving device, the first clamping member and the second clamping member are arranged relative to each other to form a first clamping chamber; the second driving device drives the second clamping member to reciprocate back and forth toward the first clamping member to change the clamping space of the first clamping chamber so that it can match pipes of multiple specifications and has high versatility.

[0012] As a preferred solution, the first clamping member has a first arc-shaped clamping surface, and the second clamping member has a second arc-shaped clamping surface for matching with the first arc-shaped clamping surface. The first arc-shaped clamping surface and the second arc-shaped clamping surface form a first clamping chamber. By setting the first arc-shaped clamping surface and the second arc-shaped clamping surface, the pipe is clamped, and there will be a certain angle between the force direction of the pipe and the friction force direction between the pipe and the clamping surface, ensuring that the pipe is not easy to slip and is clamped more firmly.

[0013] As a preferred embodiment, the first arc-shaped clamping surface has a first clamping portion and a first clamping groove, and the first clamping portion is connected to the first clamping groove to form a first arc-shaped clamping surface; correspondingly, the second clamping member has a second clamping portion and a second clamping groove, and the second clamping portion is connected to the second clamping groove to form a second arc-shaped clamping surface; the first clamping portion is adapted to the second clamping groove, and the second clamping portion is adapted to the first clamping groove.

[0014] As a preferred solution, the second positioning and clamping mechanism includes a third clamping member, a fourth clamping member and a third driving device. The third clamping member and the fourth clamping member are arranged relative to each other to enclose and form a second clamping chamber. The third driving device drives the fourth clamping member to reciprocate back and forth toward the third clamping member to change the clamping space of the second clamping chamber so that it can match pipes of multiple specifications and has high versatility.

[0015] As a preferred solution, the third clamping member has a third arcuate clamping surface, the fourth clamping member has a fourth arcuate clamping surface adapted to the third arcuate clamping surface, and the third arcuate clamping surface and the fourth arcuate clamping surface form a second clamping chamber.

[0016] As a preferred embodiment, the third arc-shaped clamping surface has a third clamping portion and a third clamping groove, and the third clamping portion is connected to the third clamping groove to form a third arc-shaped clamping surface; correspondingly, the fourth clamping member has a fourth clamping portion and a fourth clamping groove, and the fourth clamping portion is connected to the fourth clamping groove to form a fourth arc-shaped clamping surface; the third clamping portion is adapted to the fourth clamping groove, and the fourth clamping portion is adapted to the third clamping groove.

[0017] As a preferred solution, a sealing ring is further provided outside the leak detection joint at a position corresponding to the exhaust port.

[0018] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that it is mainly designed through the first leak detection station and the second leak detection station, and the first positioning clamping mechanism and the second positioning clamping mechanism are used to clamp and fix the pipe respectively. Secondly, the openings at both ends of the pipe are sealed by the cooperation of the leak detection joint and the sealing member, so that the inner cavity of the pipe forms a closed space, and gas is injected into the closed inner cavity from the exhaust port to perform air tightness detection of the pipe; it does not require manual plugging of the plug, has good stability in clamping the pipe, and has a good sealing effect, avoids loosening and falling, saves labor costs, and improves production efficiency, effectively solving the problems of low production efficiency, large human resource consumption and high labor intensity of operators in the traditional technology of using manual plugging of the plug. In particular, it has a simple structure, is easy to assemble, and is easy to produce and manufacture, which is conducive to large-scale promotion and application in small batch and multi-specification pipe air tightness detection.

[0019] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of an embodiment of the utility model;

[0021] Figure 2 It is a top view of an embodiment of the utility model;

[0022] Figure 3 It is a cross-sectional view of an embodiment of the utility model;

[0023] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0024] Description of the accompanying drawings:

[0025] 10. First leak detection station 11. Clamping space

[0026] 12. First mounting plate 13. First connecting hole

[0027] 20. Second leak detection station 21. Second mounting plate

[0028] 22. Second connection hole

[0029] 30. Leak detection mechanism 31. Leak detection joint

[0030] 32. Air inlet 33. Exhaust outlet

[0031] 34. Sealing ring

[0032] 40. First positioning and clamping mechanism 41. First clamping member

[0033] 42. Second clamping member 43. Second driving device

[0034] 411, first arc-shaped clamping surface 412, second arc-shaped clamping surface

[0035] 4111, first clamping portion 4112, first clamping groove

[0036] 4121, second clamping portion 4122, second clamping groove

[0037] 50. Second positioning and clamping mechanism 51. Third clamping member

[0038] 52. Fourth clamping member 53. Third driving device

[0039] 511, third arc-shaped clamping surface 512, fourth arc-shaped clamping surface

[0040] 5111, third clamping portion 5112, third clamping groove

[0041] 5121, fourth clamping portion 5122, fourth clamping groove

[0042] 60. Pushing and blocking mechanism 61. First driving device

[0043] 62. Sealing parts. DETAILED DESCRIPTION

[0044] Please refer to Figures 1 to 4 As shown, it shows the specific structure of an embodiment of the utility model.

[0045] In the description of the present invention, it should be noted that directional words such as the terms "up", "down", "front", "back", "left", "right", etc., which indicate directions and positional relationships, are based on the directions or positional relationships shown in the drawings or during normal wearing and use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0046] A pipe leak detection fixture comprises a first leak detection station 10 and a second leak detection station 20.

[0047] The first leak detection station 10 and the second leak detection station 20 are arranged at a relative distance to form a clamping space 11; the first leak detection station 10 is provided with a leak detection mechanism 30 and a first positioning clamping mechanism 40 for clamping the pipe; wherein, the first leak detection station 10 is also provided with a first mounting plate 12, and the leak detection mechanism 30 and the first positioning clamping mechanism 40 are installed on the first mounting plate 12, and specifically, the first mounting plate 12 is also provided with a plurality of first connecting holes 13 for adapting to a machine or a workbench, and the design of the first connecting holes 13 facilitates the subsequent placement of the first leak detection station 10;

[0048] The leak detection mechanism 30 is located beside the first positioning and clamping mechanism 40; the leak detection mechanism 30 includes a leak detection joint 31 for sealing an opening at one end of the pipe, the leak detection joint 31 has an air inlet 32 ​​and an air outlet 33 that are connected, and the air inlet 32 ​​is used to connect to an external pressure gas source; the air outlet 33 is directly opposite to one end of the first positioning and clamping mechanism 40, and the air inlet 32 ​​is located beside the air outlet 33; preferably, a sealing ring 34 is further provided on the outside of the leak detection joint 31 at a position corresponding to the air outlet 33, so that when the leak detection joint 31 is inserted into the opening at one end of the pipe, the design of the sealing ring 34 will reduce other emissions.

[0049] Preferably, the first positioning and clamping mechanism 40 includes a first clamping member 41, a second clamping member 42 and a second driving device 43. The first clamping member 41 and the second clamping member 42 are arranged relative to each other to enclose and form a first clamping chamber. The second driving device 43 drives the second clamping member 42 to reciprocate back and forth toward the first clamping member 41 to change the clamping space 11 of the first clamping chamber so that it can match pipes of multiple specifications and has high versatility.

[0050] Preferably, the first clamping member 41 has a first arc-shaped clamping surface 411, and the second clamping member 42 has a second arc-shaped clamping surface 412 for matching with the first arc-shaped clamping surface 411. The first arc-shaped clamping surface 411 and the second arc-shaped clamping surface 412 form a first clamping chamber. By setting the first arc-shaped clamping surface 411 and the second arc-shaped clamping surface 412, the pipe is clamped, and there will be a certain angle between the force direction of the pipe and the friction force direction between the pipe and the clamping surface, ensuring that the pipe is not easy to slip and is clamped more firmly.

[0051] Preferably, the first arc-shaped clamping surface 411 has a first clamping portion 4111 and a first clamping groove 4112, and the first clamping portion 4111 is connected to the first clamping groove 4112 to form a first arc-shaped clamping surface 411; correspondingly, the second clamping member 42 has a second clamping portion 4121 and a second clamping groove 4122, and the second clamping portion 4121 is connected to the second clamping groove 4122 to form a second arc-shaped clamping surface 412; the first clamping portion 4111 is adapted to the second clamping groove 4122, and the second clamping portion 4121 is adapted to the first clamping groove 4112.

[0052] The second leak detection station 20 is provided with a second positioning clamping mechanism 50 for clamping the pipe and a pushing and blocking mechanism 60 for blocking the opening at the other end of the pipe; wherein, the second leak detection station 20 is also provided with a second mounting plate 21, and the pushing and blocking mechanism 60 and the second positioning clamping mechanism 50 are mounted on the second mounting plate 21. Specifically, the second mounting plate 21 is also provided with a plurality of second connecting holes 22 for adapting to a machine or a workbench. The design of the second connecting holes 22 facilitates the subsequent placement of the second leak detection station 20; it can be arranged according to the actual length of the pipe to arrange the distance between the first leak detection station 10 and the second leak detection station 20, thereby changing the overall clamping space 11 of the pipe to meet the installation of the specified pipe. It can be arranged according to actual needs, which will not be elaborated here.

[0053] Preferably, the second positioning and clamping mechanism 50 includes a third clamping member 51, a fourth clamping member 52 and a third driving device 53, and the third clamping member 51 and the fourth clamping member 52 are arranged relative to each other to enclose and form a second clamping chamber; the third driving device 53 drives the fourth clamping member 52 to reciprocate back and forth toward the third clamping member 51 to change the clamping space 11 of the second clamping chamber so that it can match pipes of multiple specifications and has high versatility.

[0054] Preferably, the third clamping member 51 has a third arcuate clamping surface 511 , and the fourth clamping member 52 has a fourth arcuate clamping surface 512 adapted to the third arcuate clamping surface 511 , and the third arcuate clamping surface 511 and the fourth arcuate clamping surface 512 form a second clamping chamber.

[0055] Preferably, the third arc-shaped clamping surface 511 has a third clamping portion 5111 and a third clamping groove 5112, and the third clamping portion 5111 is connected to the third clamping groove 5112 to form a third arc-shaped clamping surface 511; correspondingly, the fourth clamping member 52 has a fourth clamping portion 5121 and a fourth clamping groove 5122, and the fourth clamping portion 5121 is connected to the fourth clamping groove 5122 to form a fourth arc-shaped clamping surface 512; the third clamping portion 5111 is adapted to the fourth clamping groove 5122, and the fourth clamping portion 5121 is adapted to the third clamping groove 5112.

[0056] The pushing and blocking mechanism 60 is located beside the second positioning and clamping mechanism 50 . The pushing and blocking mechanism 60 includes a first driving device 61 and a blocking member 62 . The first driving device 61 drives the blocking member 62 to reciprocate left and right toward the second positioning and clamping mechanism 50 .

[0057] In this embodiment, through water pressure detection, one end of the pipe is sealed by a leak detection joint and gas is conveyed, and then the other end of the pipe is sealed by a push-sealing mechanism, and then it is placed in water after pressurization. Whether the pipe is leaking is determined by the presence or absence of bubbles, thereby detecting the air tightness of the pipe body; or one end of the pipe is sealed by a leak detection joint and gas is conveyed, and then the other end of the pipe is sealed by a push-sealing mechanism, and then it is pressurized and tested by an air tightness detection instrument, and whether there is a leak is determined according to the gas value in the inner cavity of the pipe to detect the air tightness of the pipe body.

[0058] The design focus of the utility model is that it is mainly designed through the first leak detection station and the second leak detection station, and the first positioning clamping mechanism and the second positioning clamping mechanism are used to clamp and fix the pipe respectively. Secondly, the openings at both ends of the pipe are sealed through the cooperation of the leak detection joint and the sealing piece, so that the inner cavity of the pipe forms a closed space, and gas is injected into the closed inner cavity from the exhaust port to perform air tightness detection of the pipe; it does not require manual plugging of the plug, has good stability in clamping the pipe, and has a good sealing effect, avoids loosening and falling, saves labor costs, and improves production efficiency, effectively solving the problems of low production efficiency, large human resource consumption and high labor intensity of operators in the traditional technology of using manual plugging of the plug, especially, it has a simple structure, is easy to assemble, and is easy to produce and manufacture, which is conducive to large-scale promotion and application in small batch and multi-specification pipe air tightness detection.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A pipe leak detection fixture, characterized in that: It comprises a first leak detection station and a second leak detection station, wherein the first leak detection station and the second leak detection station are arranged at a relative distance to form a clamping space; The first leak detection station is provided with a leak detection mechanism and a first positioning and clamping mechanism for clamping the pipe; the leak detection mechanism is located beside the first positioning and clamping mechanism; the leak detection mechanism includes a leak detection joint for blocking an opening at one end of the pipe, the leak detection joint has an air inlet and an air outlet connected to each other, the air inlet is used to connect to an external pressure gas source; the air outlet is directly opposite to one end of the first positioning and clamping mechanism, and the air inlet is located beside the air outlet; The second leak detection station is provided with a second positioning and clamping mechanism for clamping the pipe and a pushing and blocking mechanism for blocking the opening at the other end of the pipe; the pushing and blocking mechanism is located on the side of the second positioning and clamping mechanism, and the pushing and blocking mechanism includes a first driving device and a blocking piece, and the first driving device drives the blocking piece to reciprocate left and right toward the second positioning and clamping mechanism.

2. A pipe leak detection fixture according to claim 1, characterized in that: The first positioning and clamping mechanism includes a first clamping member, a second clamping member and a second driving device. The first clamping member and the second clamping member are arranged opposite to each other to form a first clamping chamber. The second driving device drives the second clamping member to reciprocate back and forth toward the first clamping member to change the clamping space of the first clamping chamber.

3. A pipe leak detection fixture according to claim 2, characterized in that: The first clamping member has a first arc-shaped clamping surface, and the second clamping member has a second arc-shaped clamping surface adapted to the first arc-shaped clamping surface. The first arc-shaped clamping surface and the second arc-shaped clamping surface form a first clamping chamber.

4. A pipe leak detection fixture according to claim 3, characterized in that: The first arc-shaped clamping surface has a first clamping portion and a first clamping groove, and the first clamping portion is connected to the first clamping groove to form a first arc-shaped clamping surface; correspondingly, the second clamping member has a second clamping portion and a second clamping groove, and the second clamping portion is connected to the second clamping groove to form a second arc-shaped clamping surface; the first clamping portion is adapted to the second clamping groove, and the second clamping portion is adapted to the first clamping groove.

5. The pipe leak detection fixture according to claim 1, characterized in that: The second positioning and clamping mechanism includes a third clamping member, a fourth clamping member and a third driving device. The third clamping member and the fourth clamping member are arranged opposite to each other to form a second clamping chamber. The third driving device drives the fourth clamping member to reciprocate back and forth toward the third clamping member to change the clamping space of the second clamping chamber.

6. A pipe leak detection fixture according to claim 5, characterized in that: The third clamping member has a third arc-shaped clamping surface, the fourth clamping member has a fourth arc-shaped clamping surface adapted to the third arc-shaped clamping surface, and the third arc-shaped clamping surface and the fourth arc-shaped clamping surface form a second clamping chamber.

7. A pipe leak detection fixture according to claim 6, characterized in that: The third arc-shaped clamping surface has a third clamping portion and a third clamping groove, and the third clamping portion is connected to the third clamping groove to form a third arc-shaped clamping surface; correspondingly, the fourth clamping member has a fourth clamping portion and a fourth clamping groove, and the fourth clamping portion is connected to the fourth clamping groove to form a fourth arc-shaped clamping surface; the third clamping portion is adapted to the fourth clamping groove, and the fourth clamping portion is adapted to the third clamping groove.

8. The pipe leak detection fixture according to claim 1, characterized in that: A sealing ring is also arranged outside the leak detection joint at a position corresponding to the exhaust port.

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