A pipeline leak detection apparatus

Abstract

The utility model discloses a pipeline leakage detection device belongs to pipeline detection technical field. A kind of pipeline leakage detection device, including upper seal cover, lower seal cover, the upper seal cover and lower seal cover articulate cooperation;Upper seal cover place is provided with rack, mounting the trundle on rack, mounting the half gear on lower seal cover, with half gear through tooth engagement transmission connection's transmission gear, the transmission gear is rotatably connected with rack;Rack place is provided with guide rail, with guide rail sliding cooperation and mounting on lower seal cover's guide block.The utility model provides a kind of pipeline leakage detection device, compared with the way of extruding lower seal cover from the bottom of pipeline body, let lower seal cover rotate along the outer wall of pipeline body, and rotate to the lower half area of pipeline body, so the requirement of the distance between pipeline body and ground during rotating process is lower.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline inspection technology, and specifically relates to a pipeline leakage detection device. Background Technology

[0002] Pipe welding generally requires ensuring a tight seal, which necessitates testing the pipe's seal after welding to locate any leaks.

[0003] Chinese Patent CN 218209048 U discloses a pipe leakage detection device, which includes an upper sealing cover and a lower sealing cover. The upper sealing cover and the lower sealing cover are detachably connected. The upper sealing cover is provided with a water inlet. The upper sealing cover has a first groove on both sides and the lower sealing cover has a second groove on both sides. When the upper sealing cover and the lower sealing cover are connected, the first groove and the second groove are joined to form a through hole that matches the cross-section of the pipe.

[0004] However, when using the aforementioned device, the lower sealing cover needs to be inserted from the bottom of the pipe to fit into the lower part of the pipe. To ensure proper insertion, the distance between the pipe and the ground must be no less than the radius of the lower sealing cover. However, some pipes have a small distance between them and the ground, making installation difficult even if the lower sealing cover can fit, due to the limited operating space. Therefore, this application proposes a pipe leak detection device. Utility Model Content

[0005] The purpose of this utility model is to provide a pipeline leakage detection device to solve the problem mentioned in the background art that when the lower sealing cover is placed in the lower half of the pipeline, it needs to be inserted from the bottom of the pipeline. When inserting it, in order to ensure that the lower sealing cover can be installed, the distance between the pipeline and the ground needs to be no less than the radius of the lower sealing cover. However, the distance between some pipelines and the ground is small. Even if the lower sealing cover can be allowed to enter, the small operating space will make the installation of the lower sealing cover more difficult.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pipeline leakage detection device, comprising an upper sealing cover and a lower sealing cover, wherein the upper sealing cover and the lower sealing cover are hinged together. A frame is provided at the upper sealing cover, casters are mounted on the frame, a half gear is mounted on the lower sealing cover, and a transmission gear is connected to the half gear through gear meshing. The transmission gear is rotatably engaged with the frame. The frame is provided with a guide rail and a guide block that slides with the guide rail and is mounted on the lower sealing cover; The lower sealing cover has at least two states, including a detection state and a loading / unloading state. When the lower sealing cover is in the detection state, the lower sealing cover is located in the lower half of the pipe body, and the upper sealing cover covers the lower sealing cover and surrounds the detection area with the lower sealing cover. When the lower sealing cover is in the loading / unloading state, the lower sealing cover is attached to the right half of the pipe body.

[0007] Preferably, a positioning mechanism is provided at the upper sealing cover, which can lock the relative position of the upper sealing cover and the lower sealing cover or release the upper sealing cover and the lower sealing cover.

[0008] Preferably, the positioning mechanism includes a magnetic plate and an electromagnet.

[0009] Preferably, the upper sealing cover has a first groove, the lower sealing cover has a second groove, the magnetic plate is inserted into the second groove, and the electromagnet is installed in the first groove.

[0010] Preferably, a drive motor is provided on the frame, and the output shaft of the drive motor is connected to a transmission gear.

[0011] Preferably, the upper and lower sealing covers can surround a detection area that mates with the pipe body, and the detection area and the outer wall of the pipe body can surround a detection cavity for measuring whether the pipe body is leaking.

[0012] Preferably, the cross-section of the guide block is configured as a convex shape.

[0013] Preferably, a water supply pipe is inserted into the upper sealing cover.

[0014] Preferably, both the upper and lower sealing covers are provided with an inner sealing ring and an inner sealing gasket installed inside the inner sealing ring and cooperating with the outer wall of the pipe body.

[0015] Preferably, an outer sealing ring is provided on the side of the inner sealing ring near the side wall of the upper sealing cover, and a sealing airbag is inserted into the outer sealing ring.

[0016] Beneficial effects: This utility model provides a pipeline leak detection device. Water can be introduced into the detection cavity formed by the upper sealing cover, lower sealing cover, and pipeline body surrounding the water supply pipeline. When the pipeline body leaks, the water submerged in the pipeline body will produce a large number of bubbles due to the leaked gas inside the pipeline body. The presence or absence of bubbles can be used to check whether the pipeline body is leaking. Two inner sealing rings surround the detection cavity, and together with two sets of inner sealing gaskets, they can provide the first layer of protection for the detection cavity. An outer sealing ring is provided on the side of the inner sealing ring near the side wall of the upper sealing cover. A sealing airbag is inserted into the outer sealing ring. The sealing airbag is connected to an air pump, which can introduce gas into the sealing airbag, causing the sealing airbag to inflate and fit against the outer wall of the pipeline body, providing the second layer of protection for the detection cavity.

[0017] This utility model provides a pipeline leak detection device. By moving the frame with casters, the frame and the upper and lower sealing covers on it are moved to the pipeline body. The upper sealing cover is pulled to align the opening of the lower sealing cover with the outer wall of the pipeline body. The frame is moved further to allow the lower sealing cover to fit against the right half of the pipeline body. At this time, the drive motor is started, which drives the transmission gear to rotate. The transmission gear drives the half gear to rotate through gear meshing. The lower sealing cover connected to the half gear rotates together, thereby rotating the lower sealing cover to the lower half of the pipeline body. Next, rotate the upper sealing cover so that it covers the lower sealing cover, switching the lower sealing cover to the detection state. At this point, the pipe body can be checked for leaks. Compared to squeezing the lower sealing cover in from the bottom of the pipe body, rotating the lower sealing cover along the outer wall of the pipe body until it reaches the lower half of the pipe body requires less distance between the pipe body and the ground during rotation. To remove the lower sealing cover 2, simply reverse the above steps. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the pipeline leakage detection device of this utility model; Figure 2 This is one of the internal structural diagrams of the pipeline leak detection device of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A; Figure 4 This is the second schematic diagram of the internal structure of the pipeline leakage detection device of this utility model; Figure 5 This is one of the structural schematic diagrams of the pipeline leakage detection device when the lower sealing cover is in the loading and unloading state in this utility model; Figure 6 This is the second schematic diagram of the pipeline leakage detection device when the lower sealing cover is in the loading and unloading state in this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Upper sealing cover; 2. Lower sealing cover; 3. Positioning mechanism; 301. Magnetic plate; 302. Electromagnet; 4. Guide block; 5. Guide rail; 6. Frame; 7. Casters; 8. Half gear; 9. Transmission gear; 10. Drive motor; 11. Pipe body; 12. Water supply pipe; 13. Inner sealing ring; 14. Inner sealing gasket; 15. Outer sealing ring; 16. Sealing airbag. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0021] like Figures 1-6 As shown in the figure, the pipeline leakage detection device provided by this utility model includes an upper sealing cover 1 and a lower sealing cover 2. The upper sealing cover 1 and the lower sealing cover 2 are hinged together. The upper sealing cover 1 and the lower sealing cover 2 can surround a detection area that cooperates with the pipeline body 11. The detection area covers the pipeline body 11 and together with the outer wall of the pipeline body 11, surrounds a detection cavity for measuring whether the pipeline body 11 is leaking. A positioning mechanism 3 is provided at the upper sealing cover 1. The positioning mechanism 3 can lock the relative position of the upper sealing cover 1 and the lower sealing cover 2 or release the upper sealing cover 1 and the lower sealing cover 2.

[0022] Specifically, the positioning mechanism 3 includes a magnetic plate 301 and an electromagnet 302. A first groove is provided inside the upper sealing cover 1, and a second groove is provided inside the lower sealing cover 2. The magnetic plate 301 is inserted into the second groove, and the electromagnet 302 is installed in the first groove. When the electromagnet 302 is turned on, it can magnetically attract the magnetic plate 301 located on the lower sealing cover 2. The magnetic plate 301 can be made of iron plate, which can lock the relative position between the upper sealing cover 1 and the lower sealing cover 2. At this time, the pipe body 11 can be detected. When the electromagnet 302 is turned off, the upper sealing cover 1 and the lower sealing cover 2 can be separated.

[0023] The gap between part of the pipe body 11 and the ground is small. To facilitate the encirclement of the upper sealing cover 1 and the lower sealing cover 2 around the pipe body 11, a frame 6 is installed at the upper sealing cover 1, casters 7 are mounted on the frame 6, a half gear 8 is mounted on the lower sealing cover 2, and a transmission gear 9 is connected to the half gear 8 through gear meshing. The transmission gear 9 rotates with the frame 6. To drive the transmission gear 9 to rotate, a drive motor 10 is installed on the frame 6, and the output shaft of the drive motor 10 is connected to the transmission gear 9. The output shaft of the drive motor 10 and the transmission gear 9 are connected by a flat key and a keyway. In addition to relying on the drive motor 10, the transmission gear 9 can also be rotated manually. If the drive motor 10 is installed, a corresponding power supply and controller need to be installed on the frame 6.

[0024] Driven by the transmission gear 9, the half gear 8 and the lower sealing cover 2 can rotate around the pipe body 11, allowing the lower sealing cover 2 to have at least two states, including a detection state and a loading / unloading state. When the lower sealing cover 2 is in the detection state, the opening of the lower sealing cover 2 is laterally distributed, and the lower sealing cover 2 is located in the lower half of the pipe body 11. The upper sealing cover 1 covers the lower sealing cover 2 and surrounds the detection area with the lower sealing cover 2. The upper sealing cover 1 and the lower sealing cover 2 are hinged together. Rotating the upper sealing cover 1 allows it to cover the lower sealing cover 2, forming the detection area.

[0025] Specifically, when the lower sealing cover 2 is in the loading and unloading state, the opening of the lower sealing cover 2 is longitudinally distributed, and the lower sealing cover 2 is attached to the right half of the pipe body 11. The right half of the pipe body 11 is the lower half of the pipe body 11 in the detection state, and it can also be the left half of the pipe body 11.

[0026] For reference Figure 5 , Figure 6 At this time, the lower sealing cover 2 is in the loading and unloading state. The frame 6 is moved by the casters 7, and the frame 6 and the upper sealing cover 1 and the lower sealing cover 2 on it are moved to the pipe body 11. The upper sealing cover 1 is pulled to align the opening of the lower sealing cover 2 with the outer wall of the pipe body 11. The frame 6 is moved continuously, and then the lower sealing cover 2 is fitted to the right half of the pipe body 11. At this time, the drive motor 10 is started, and the drive motor 10 can drive the transmission gear 9 to rotate. The transmission gear 9 drives the half gear 8 to rotate through the meshing of the teeth. The lower sealing cover 2 connected to the half gear 8 rotates together, and then rotates the lower sealing cover 2 to the lower half of the pipe body 11. After that, the upper sealing cover 1 is rotated so that the upper sealing cover 1 covers the upper side of the lower sealing cover 2, and the lower sealing cover 2 is switched to the detection state. At this time, the pipe body 11 can be tested for leakage. Compared to squeezing the lower sealing cover 2 from the bottom of the pipe body 11, allowing the lower sealing cover 2 to rotate along the outer wall of the pipe body 11 and rotate to the lower half of the pipe body 11 requires less distance between the pipe body 11 and the ground during the rotation process.

[0027] In order to guide the rotation of the lower sealing cover 2, a guide rail 5 is provided at the frame 6, and a guide block 4 is slidably fitted with the guide rail 5 and installed on the lower sealing cover 2. The cross-section of the guide block 4 is set in a convex shape.

[0028] Specifically, a water supply pipe 12 is inserted into the upper sealing cover 1. The water supply pipe 12 can supply water into the detection chamber surrounded by the upper sealing cover 1, the lower sealing cover 2, and the pipe body 11. When the pipe body 11 leaks, the water that submerges the pipe body 11 will produce a lot of bubbles due to the leaked gas inside the pipe body 11. The presence or absence of bubbles can be used to check whether the pipe body 11 is leaking. In this way, the upper sealing cover 1 can be made of transparent material or a transparent window can be opened in the upper sealing cover 1.

[0029] To seal the detection chamber and prevent water leakage, inner sealing rings 13 and inner sealing gaskets 14, which are installed inside the inner sealing rings 13 and mate with the outer wall of the pipe body 11, are provided inside both the upper sealing cover 1 and the lower sealing cover 2. The two inner sealing rings 13 surround the detection chamber, and together with the two sets of inner sealing gaskets 14, they can provide the first line of protection for the detection chamber. Inner sealing rings 13 and outer sealing rings 15 are provided at both ends of the detection chamber.

[0030] An outer sealing ring 15 is provided on the side of the inner sealing ring 13 near the side wall of the upper sealing cover 1. A sealing airbag 16 is inserted into the outer sealing ring 15. The sealing airbag 16 is connected to an air pump. The air pump can introduce gas into the sealing airbag 16, causing the sealing airbag 16 to inflate and fit against the outer wall of the pipeline body 11, providing a second layer of protection for the detection chamber.

[0031] In summary, this utility model embodiment provides a pipeline leak detection device. Water can be introduced into the detection cavity surrounded by the upper sealing cover 1, the lower sealing cover 2, and the pipeline body 11 through the water supply pipe 12. When the pipeline body 11 leaks, the water submerged in the pipeline body 11 will produce a large number of bubbles due to the leaked gas inside the pipeline body 11. The presence or absence of bubbles can be used to check whether the pipeline body 11 is leaking. Two inner sealing rings 13 surround the detection cavity and, together with two sets of inner sealing gaskets 14, can provide the first layer of protection for the detection cavity. An outer sealing ring 15 is provided on the side of the inner sealing ring 13 near the side wall of the upper sealing cover 1. A sealing airbag 16 is inserted into the outer sealing ring 15. The sealing airbag 16 is connected to an air pump, which can introduce gas into the sealing airbag 16, causing the sealing airbag 16 to inflate and fit against the outer wall of the pipeline body 11, providing the second layer of protection for the detection cavity.

[0032] Move the frame 6 using casters 7, and move the frame 6 and the upper sealing cover 1 and lower sealing cover 2 on it to the pipe body 11. Pull the upper sealing cover 1 and align the opening of the lower sealing cover 2 with the outer wall of the pipe body 11. Continue moving the frame 6, and then let the lower sealing cover 2 fit against the right half of the pipe body 11. At this time, start the drive motor 10, which can drive the transmission gear 9 to rotate. The transmission gear 9 drives the half gear 8 to rotate through gear meshing. The lower sealing cover 2 connected to the half gear 8 rotates together, and then rotates the lower sealing cover 2 to the lower half of the pipe body 11. After rotating the lower sealing cover 1, let the upper sealing cover 1 cover the upper side of the lower sealing cover 2, and switch the lower sealing cover 2 to the detection state. At this time, the pipe body 11 can be tested for leakage. Compared to squeezing the lower sealing cover 2 into the bottom of the pipe body 11, rotating the lower sealing cover 2 along the outer wall of the pipe body 11 and rotating it to the lower half of the pipe body 11 reduces the distance requirement between the pipe body 11 and the ground during the rotation. When removing the lower sealing cover 2, simply reverse the above steps.

[0033] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A pipeline leak detection device, comprising an upper sealing cover (1) and a lower sealing cover (2), characterized in that, The upper sealing cover (1) and the lower sealing cover (2) are hinged together; The upper sealing cover (1) is provided with a frame (6), casters (7) mounted on the frame (6), a half gear (8) mounted on the lower sealing cover (2), and a transmission gear (9) that is connected to the half gear (8) through gear meshing and rotates with the frame (6). The frame (6) is provided with a guide rail (5) and a guide block (4) that slides with the guide rail (5) and is installed on the lower sealing cover (2); The lower sealing cover (2) has at least two states, including detection state and loading / unloading state. When the lower sealing cover (2) is in the detection state, the lower sealing cover (2) is located in the lower half of the pipe body (11), and the upper sealing cover (1) covers the lower sealing cover (2) and surrounds the detection area with the lower sealing cover (2). When the lower sealing cover (2) is in the loading and unloading state, the lower sealing cover (2) is attached to the right half of the pipe body (11).

2. The pipeline leak detection device as described in claim 1, characterized in that, A positioning mechanism (3) is provided at the upper sealing cover (1). The positioning mechanism (3) can lock the relative position of the upper sealing cover (1) and the lower sealing cover (2) or release the upper sealing cover (1) and the lower sealing cover (2).

3. The pipeline leak detection device as described in claim 2, characterized in that, The positioning mechanism (3) includes a magnetic plate (301) and an electromagnet (302).

4. The pipeline leak detection device as described in claim 3, characterized in that, The upper sealing cover (1) is provided with a first groove, the lower sealing cover (2) is provided with a second groove, the magnetic plate (301) is inserted into the second groove, and the electromagnet (302) is installed in the first groove.

5. The pipeline leak detection device as described in claim 1, characterized in that, The frame (6) is equipped with a drive motor (10), and the output shaft of the drive motor (10) is connected to the transmission gear (9).

6. The pipeline leak detection device as described in claim 1, characterized in that, The upper sealing cover (1) and the lower sealing cover (2) can surround a detection area that cooperates with the pipe body (11), and the detection area and the outer wall of the pipe body (11) can surround a detection cavity for measuring whether the pipe body (11) is leaking.

7. A pipeline leak detection device as described in claim 1, characterized in that, The cross-section of the guide block (4) is set to a convex shape.

8. A pipeline leak detection device as described in claim 1, characterized in that, A water supply pipe (12) is inserted into the upper sealing cover (1).

9. A pipeline leak detection device as described in claim 8, characterized in that, Both the upper sealing cover (1) and the lower sealing cover (2) are provided with an inner sealing ring (13) and an inner sealing gasket (14) installed in the inner ring of the inner sealing ring (13) and cooperating with the outer wall of the pipe body (11).

10. A pipeline leak detection device as described in claim 9, characterized in that, The inner sealing ring (13) is provided with an outer sealing ring (15) on the side of the upper sealing cover (1) with a sealing airbag (16) inserted inside the outer sealing ring (15).

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