Pipeline welding seam detection device
By using combined devices such as pools, air pumps, valve bodies and pressure gauges, the problem of high helium consumption when detecting pipeline welds is solved, and low-cost weld detection is achieved.
Patent Information
- Application Number
- CN202421998887.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-08-16
AI Technical Summary
Helium is consumed when inspecting pipe welds, resulting in high costs.
A combined device of a pool, an air pump, a first valve body, a second valve body, an intake pipe, a discharge pipe, a connecting pipe and a pressure gauge is used to detect whether the weld is leaking by observing the bubbles and air pressure, and avoid continuous consumption of helium.
It reduces the cost of detecting pipeline welds, reduces the use of helium, and improves detection efficiency.
Smart Images
Figure CN223217036U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of detection devices, and in particular to a pipeline weld detection device. Background Art
[0002] When a pipeline is welded from multiple sections, the welds need to be inspected to test for leaks. During the inspection, one end of the pipeline is usually sealed, and the other end is connected to a helium tank. The probe of a helium mass spectrometer leak detector is then used to scan the outer surface of the weld point by point. After the inspection is complete, the helium in the pipeline needs to be released before the pipeline can be disconnected from the helium tank.
[0003] Since helium is consumed when inspecting pipeline welds, the cost of inspecting pipeline welds is high. Summary of the Invention
[0004] In order to reduce the cost of detecting pipeline welds, the present application provides a pipeline weld detection device.
[0005] This application provides a pipeline weld detection device using the following technical solutions:
[0006] A pipeline weld detection device includes a water tank and an air pump. The air outlet of the air pump is connected to an air inlet pipe, which is connected to an air discharge pipe. The air inlet pipe is installed with a first valve body between the air discharge pipe and the air pump, and the air discharge pipe is installed with a second valve body. The end of the air inlet pipe is provided with a connector for connecting to one end of the pipeline. The detection device also includes a blocking member for blocking the other end of the pipeline.
[0007] The air outlet of the air pump is also connected to a connecting pipe, the end of the connecting pipe away from the air pump is blocked, and a pressure gauge is installed on the connecting pipe;
[0008] The detection device also includes a controller, which is electrically connected to the second valve body, the first valve body and the air pump.
[0009] By adopting the above technical solution, when inspecting the pipeline weld, the operator first uses a sealing piece to seal one end of the pipeline, and then uses a connecting piece to connect the pipeline with the air inlet pipe. The controller controls the second valve body to close and the first valve body to open. The air pump works to pump air into the pipeline through the air inlet pipe. The operator immerses the pipeline in a pool of water and detects whether the weld is leaking by observing whether bubbles emerge. At the same time, the air pump also pumps air into the connecting pipe. By observing the pressure gauge, it can be known whether the air pressure at this time meets the air pressure standard for detection. When the air pressure does not meet the air pressure standard for detection, the operator adjusts the air pump in time.
[0010] When the inspection is completed, the controller controls the first valve body to close and the second valve body to open. At this time, the gas in the pipeline is released through the connecting pipe and the vent pipe, reducing the pressure in the pipeline. At this time, the operator removes the connecting piece and the sealing piece from the pipeline. When inspecting the weld, there is no need to continuously consume helium, which reduces the cost of inspecting pipeline welds.
[0011] Optionally, a pressure alarm is also installed on the connecting pipe, and when the pressure in the connecting pipe exceeds a set range of the pressure alarm, the pressure alarm will sound an alarm.
[0012] By adopting the above technical solution, the pressure setting range of the pressure alarm is the pressure value range specified when detecting welds. When the actual pressure exceeds the set range, the pressure alarm alarms, which can promptly remind the operator to adjust the air pump.
[0013] Optionally, the connecting piece includes a cover plate that is adapted to the pipe and can seal one end of the pipe, a convex ring is integrally formed on one end face of the cover plate, the inner wall of the convex ring contacts the outer wall of the pipe, a branch pipe passing through the cover plate is connected to the cover plate, and a pipe clamp is detachably connected to the cover plate.
[0014] By adopting the above technical solution, the operator covers one end of the pipe with the cover plate so that the cover plate blocks the port of the pipe, the convex ring contacts the outer wall of the pipe, the branch pipe faces outward, and the convex ring is pressed tightly against the outer wall of the pipe using a pipe clamp. Finally, the air intake pipe is plugged into the branch pipe to complete the connection between the air intake pipe and the pipe.
[0015] Optionally, the sealing member includes a sealing plate adapted to the pipeline and capable of sealing one end of the pipeline, a convex ring is integrally formed on one end face of the sealing plate, the inner wall of the convex ring contacts the outer wall of the pipeline, and a pipe clamp is detachably connected to the sealing plate.
[0016] By adopting the above technical solution, when one end of the pipeline needs to be sealed, the operator covers the sealing plate to one end of the pipeline, so that the convex ring contacts the outer wall of the pipeline, and uses a pipe clamp to press the convex ring against the outer wall of the pipeline, thereby completing the sealing of the pipeline end.
[0017] Optionally, an annular convex edge is integrally formed on the outer wall of the convex ring, and a groove adapted to the convex edge is formed on the inner wall of the pipe clamp.
[0018] By adopting the above technical solution, the convex edge cooperates with the groove, so that the pipe clamp can better cooperate with the convex ring.
[0019] Optionally, a rubber pad is fixedly connected to the end surface of the cover plate and the sealing plate close to the pipeline.
[0020] By adopting the above technical solution, the gasket cooperates with the pipeline, which can better seal the pipeline.
[0021] Optionally, ring plates are fixedly connected to the end surfaces of both the blocking plate and the cover plate close to the pipeline, and the outer wall of the ring plate contacts the inner wall of the pipeline.
[0022] By adopting the above technical solution, the ring plate is inserted into the pipeline, and the cooperation between the ring plate and the pipeline can better seal the pipeline and reduce the occurrence of gas leakage from the end of the pipeline.
[0023] Optionally, the wall thickness of the ring plate gradually becomes thinner from the sealed end toward the open end.
[0024] By adopting the above technical solution, the operator can better insert the ring plate into the pipeline.
[0025] In summary, this application includes at least one of the following beneficial technical effects:
[0026] 1. By setting up a water pool, air pump, first valve body, second valve body, air inlet pipe, air release pipe, connecting pipe and pressure gauge, there is no need to continuously consume helium, thus reducing the cost of pipeline weld inspection;
[0027] 2. By setting the convex edge and the groove, the pipe clamp can better cooperate with the convex ring;
[0028] 3. By installing a ring plate, the occurrence of gas leakage from the end of the pipeline can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a schematic diagram of the overall structure of the detection device according to an embodiment of the present application.
[0030] Figure 2 It is a schematic diagram showing the pipeline connection relationship in an embodiment of the present application.
[0031] Figure 3 It is a cross-sectional view showing the positional relationship between the connecting member and the blocking member in an embodiment of the present application.
[0032] Figure 4 It is a cross-sectional view of the connector structure according to an embodiment of the present application.
[0033] Figure 5 It is a cross-sectional view of the sealing member structure according to an embodiment of the present application.
[0034] Explanation of the accompanying symbols: 1. Water tank; 2. Air pump; 3. Inlet pipe; 31. First valve body; 4. Connecting pipe; 41. Pressure gauge; 42. Pressure alarm; 5. Vent pipe; 51. Second valve body; 6. Controller; 7. Connecting part; 71. Cover plate; 72. Branch pipe; 73. Convex ring; 731. Convex edge; 8. Sealing part; 81. Sealing plate; 82. Pad; 83. Ring plate; 9. Pipe clamp; 91. Groove. DETAILED DESCRIPTION
[0035] The following is combined with Figure 1-5 This application is described in further detail.
[0036] The present application embodiment discloses a pipeline weld detection device. Figure 1 and Figure 2 , including a water pool 1 and an air pump 2, the air outlet of the air pump 2 is connected to an air intake pipe 3 and a connecting pipe 4. The air intake pipe 3 is mounted with a first valve body 31, and the air intake pipe 3 is also fixedly connected to a vent pipe 5. The vent pipe 5 is connected to the air intake pipe 3 at a side of the first valve body 31 away from the air pump 2. The vent pipe 5 is mounted with a second valve body 51. The detection device also includes a controller 6, which is electrically connected to the first valve body 31, the second valve body 51, and the air pump 2.
[0037] One end of the connecting pipe 4 is blocked, and a pressure gauge 41 and a pressure alarm 42 are installed on the connecting pipe 4; the pressure in the connecting pipe 4 is consistent with the pressure of the air pump 2, and the operator can know the air pressure at this time through the pressure gauge 41; the pressure alarm 42 sets a pressure range, and the set pressure range is the pressure value required for weld detection. When the actual gas pressure in the connecting pipe 4 exceeds this set range, the pressure alarm 42 will issue an alarm signal. After receiving the signal, the operator can adjust the air pump 2 in time.
[0038] Reference Figure 3 and Figure 4 The detection device also includes a connecting piece 7 and a blocking piece 8 that are detachable from the pipeline. The connecting piece 7 is used to connect the air inlet pipe 3 and the pipeline, and the blocking piece 8 is used to block the end of the pipeline away from the air inlet pipe 3; Figure 2 and Figure 4 The connecting piece 7 includes a cover plate 71 adapted to the pipe port, and a convex ring 73 is integrally formed on the cover plate 71, and the inner wall of the convex ring 73 is tightly fitted with the outer wall of the pipe; the cover plate 71 is fixedly connected to a branch pipe 72 that passes through the cover plate 71, and the branch pipe 72 is used to be connected to the intake pipe 3. The cover plate 71 can also be detachably connected to a pipe clamp 9 for fastening the cover plate 71 to the pipe port. In order to make the convex ring 73 and the pipe clamp 9 better fit, an annular convex edge 731 is integrally formed on the outer wall of the convex ring 73, and a groove 91 adapted to the convex edge 731 is opened on the inner wall of the pipe clamp 9. The convex edge 731 cooperates with the groove 91 to make the convex ring 73 and the pipe clamp 9 better fit.
[0039] Reference Figure 5 The sealing member 8 includes a sealing plate 81, which is adapted to the pipe port. A convex ring 73 is also integrally formed on the sealing plate 81. The inner wall of the convex ring 73 fits tightly against the outer wall of the pipe. A convex edge 731 is also integrally formed on the convex ring 73. The sealing member 8 also includes a pipe clamp 9 detachably connected to the convex ring 73. A groove 91 adapted to the convex edge 731 is also provided on the inner wall of the pipe clamp 9.
[0040] Reference Figure 4 and Figure 5 In order to improve the sealing of the pipe port, a layer of rubber pad 82 is fixedly connected to the end surface of the sealing plate 81 and the cover plate 71 close to the pipe. When the sealing plate 81 and the cover plate 71 are matched with the pipe, the pad 82 is pressed against the pipe port, and the deformation of the pad 82 can better seal the pipe port; a circle of ring plate 83 is fixedly connected to the pad 82. When matched with the pipe, the ring plate 83 is inserted into the pipe, and the outer wall of the ring plate 83 contacts the inner wall of the pipe, further reducing the occurrence of air leakage at the pipe port. In order to make it easier for the operator to insert the tube sheet into the pipe, the wall thickness of the ring plate 83 gradually decreases away from the pad 82.
[0041] When conducting weld inspection, cover one end of the pipe with the sealing plate 81, align the groove 91 of the pipe clamp 9 with the convex edge 731, buckle the pipe clamp 9, then cover the other end of the pipe with the cover plate 71, buckle the pipe clamp 9, and then insert the air inlet pipe 3 into the branch pipe 72; start the air pump 2 through the controller 6, close the second valve body 51, and open the first valve body 31 to allow gas to enter the pipe through the air inlet pipe 3. Then the operator immerses the pipe filled with gas in the water pool 1 to observe whether there are bubbles coming out of the weld to determine whether there is any leakage in the weld.
[0042] After the inspection is completed, the controller 6 controls the second valve body 51 to open and the first valve body 31 to close. At this time, the gas in the air pipe is discharged through the vent pipe 5, and then the air inlet pipe 3 is separated from the branch pipe 72, the two pipe clamps 9 are released, and the sealing plate 81 and the cover plate 71 are removed from the pipeline; since there is no need to continuously consume helium when inspecting the weld, the cost of inspecting the pipeline weld is reduced.
[0043] The implementation principle of a pipeline weld detection device in an embodiment of the present application is as follows: both the sealing plate 81 and the cover plate 71 are placed on the pipeline, and the sealing plate 81 and the cover plate 71 are fixed to the pipeline using a pipe clamp 9, and the air intake pipe 3 is connected to the branch pipe 72. The air pump 2 is controlled to work by the controller 6, the first valve body 31 is opened, and the second valve body 51 is closed, and then the pipeline is placed in the water pool 1; after the detection is completed, the first valve is controlled to close and the second valve is opened by the controller 6, and the gas in the pipeline is discharged through the vent pipe 5. Finally, the operator separates the air intake pipe 3 from the branch pipe 72, releases the two pipe clamps 9, and removes the sealing plate 81 and the cover plate 71 from the pipeline.
[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A pipeline weld detection device, comprising a water tank (1), characterized in that: The apparatus further comprises an air pump (2), wherein the air outlet of the air pump (2) is connected to an air inlet pipe (3), the air inlet pipe (3) is connected to an air discharge pipe (5), a first valve body (31) is installed on the air inlet pipe (3) between the air discharge pipe (5) and the air pump (2), a second valve body (51) is installed on the air discharge pipe (5), a connecting piece (7) is provided at the end of the air inlet pipe (3) for connecting to one end of the pipe, and the detection device further comprises a blocking piece (8) for blocking the other end of the pipe; The air outlet of the air pump (2) is also connected to a connecting pipe (4), the end of the connecting pipe (4) away from the air pump (2) is blocked, and a pressure gauge (41) is installed on the connecting pipe; The detection device further comprises a controller (6), wherein the controller (6) is electrically connected to the second valve body (51), the first valve body (31), and the air pump (2).
2. A pipeline weld detection device according to claim 1, characterized in that: A pressure alarm (42) is also installed on the connecting pipe (4). When the pressure in the connecting pipe (4) exceeds the set range of the pressure alarm (42), the pressure alarm (42) will sound an alarm.
3. A pipeline weld detection device according to claim 1 or 2, characterized in that: The connector (7) comprises a cover plate (71) adapted to fit the pipeline and capable of sealing one end of the pipeline. A convex ring (73) is integrally formed on one end face of the cover plate (71). The inner wall of the convex ring (73) contacts the outer wall of the pipeline. A branch pipe (72) passing through the cover plate (71) is connected to the cover plate (71). A pipe clamp (9) is detachably connected to the cover plate (71).
4. The pipeline weld detection device according to claim 3, characterized in that: The blocking member (8) comprises a blocking plate (81) adapted to the pipeline and capable of blocking one end of the pipeline. A convex ring (73) is integrally formed on one end face of the blocking plate (81), the inner wall of the convex ring (73) contacts the outer wall of the pipeline, and a pipe clamp (9) is detachably connected to the blocking plate (81).
5. The pipeline weld detection device according to claim 4, characterized in that: An annular convex edge (731) is integrally formed on the outer wall of the convex ring (73), and a groove (91) adapted to the convex edge (731) is formed on the inner wall of the pipe hoop (9).
6. The pipeline weld detection device according to claim 4, characterized in that: A rubber pad (82) is fixedly connected to the end surface of the cover plate (71) and the blocking plate (81) close to the pipe.
7. The pipeline weld detection device according to claim 4, characterized in that: The blocking plate (81) and the cover plate (71) are both fixedly connected to an annular plate (83) on their end surfaces close to the pipeline, and the outer wall of the annular plate (83) is in contact with the inner wall of the pipeline.
8. The pipeline weld detection device according to claim 7, characterized in that: The wall thickness of the ring plate (83) gradually becomes thinner from the blocked end toward the open end.