A pipeline sealing detection device

Abstract

The present invention relates to the technical field of pipeline detection, and particularly relates to a pipeline sealing detection device, which includes a bottom plate, a fixing frame, a marking component, an inflation component and a seal. The pipeline is passed through the rotating ring in the middle of the fixing frame, and the first limiting groove on the connecting block is abutted against the outer wall of the pipeline to be detected. One end of the pipeline is connected to the inflation component, and the other end is connected to the seal. The inflation component inflates the pipeline, and the rotating ring is rotated. If there is a leakage point on the pipeline, the gas in the pipeline will overflow from the leakage point inside the pipeline. When the first limiting groove rotates to the leakage point, the overflowing gas enters the cavity through the air inlet hole, and the marking liquid is ejected from the liquid outlet, so as to mark the leakage point on the outer wall of the pipeline with the marking liquid. By moving the inflation component and the seal, the pipeline is axially moved in the installation hole, so that different positions on the outer wall of the pipeline can be detected. It has the advantages of simple structure and convenient operation, providing convenience for the staff to carry out repairs later.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline detection, and particularly relates to a pipeline sealing detection device. Background Art

[0002] A conveying pipeline refers to a device connected by pipelines, connectors, valves, etc. for conveying gases, liquids or fluids with solid particles. Limited by manufacturing processes and costs, the length of pipelines is generally not too long. To meet different laying requirements, pipelines often need to be spliced. After splicing, the spliced pipelines usually need to be subjected to sealing detection at the splicing joints to ensure the sealing performance of the pipeline splicing joints.

[0003] In the prior art, a patent for invention with the application number CN202110713777.2 discloses a pipeline sealing detection device and a pipeline sealing detection method. The pipeline sealing detection device includes: a mounting base; an airbag, the airbag has a connection end disposed within the mounting base and a measuring end protruding from the mounting base, an inflation port is provided on the airbag, the measuring end is used to extend into the pipeline to be detected, a hydraulic injection structure is disposed through opposite ends of the airbag in the length direction and is hermetically connected to the airbag, the hydraulic injection structure has an input end and an output end, the output end is disposed close to the measuring end for filling fluid into the pipeline to be detected; and a pressure detector disposed on the hydraulic injection structure for detecting the fluid pressure within the hydraulic injection structure. The pipeline sealing detection device and the pipeline sealing detection method provided by the above invention improve the working efficiency of the sealing test while reducing the workload of the sealing test.

[0004] However, in actual use, the existing detection device can detect whether there are leaks at the joints, but it is difficult to mark the specific positions of the leak points, which is not conducive to the staff for later repair. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that it is difficult to mark the specific positions of the leak points, which is not conducive to the staff for later repair.

[0006] To solve the above problems, the present invention provides a pipeline sealing detection device, including:

[0007] A bottom plate;

[0008] A fixing frame fixedly installed on the bottom plate, and an installation hole is provided in the middle of the fixing frame for passing through the pipeline;

[0009] A marking component, installed on the fixing frame and located within the installation hole. The marking component includes a rotating ring and a connecting block. The rotating ring is rotatably installed in the installation hole, and the connecting block is movably connected to the rotating ring. One end of the connecting block away from the rotating ring is provided with a first limiting groove for abutting against the outer wall of the pipeline. The inside of the connecting block is a cavity for accommodating marking liquid. The first limiting groove is provided with a liquid outlet hole and an air inlet hole, both of which are communicated with the cavity;

[0010] An inflation component, movably installed on the bottom plate and located on one side of the fixing frame along the axial direction in which the pipeline passes through, for inflating the pipeline;

[0011] A seal, movably installed on the bottom plate and located on the other side of the fixing frame, opposite to the inflation component.

[0012] Furthermore, for this pipeline sealing detection device, the marking component further includes:

[0013] Two liquid storage boxes, arranged in the cavity. The liquid outlet hole is communicated with the liquid storage boxes, and the marking liquid is stored in the liquid storage boxes;

[0014] A connecting pipe, connecting the two liquid storage boxes. The air inlet hole is communicated with the connecting pipe;

[0015] A first one-way valve, arranged in the liquid outlet hole;

[0016] A second one-way valve, arranged in the connecting pipe.

[0017] Furthermore, for this pipeline sealing detection device, the marking component further includes:

[0018] A telescopic rod, fixedly installed on the inner wall of the rotating ring. The connecting block is fixedly connected to the end of the telescopic rod away from the rotating ring;

[0019] An elastic member, sleeved on the telescopic rod and located between the rotating ring and the connecting block.

[0020] Furthermore, for this pipeline sealing detection device, the first limiting groove is arc-shaped, and a buffer pad is provided on the inner wall of the first limiting groove.

[0021] Furthermore, for this pipeline sealing detection device, it further includes:

[0022] A clamping component, arranged on one side of the fixing frame and outside the installation hole for fixing the pipeline, including:

[0023] A rotating rod, rotatably installed on one side of the fixing frame. Opposite external threads are provided at both ends of the rotating rod;

[0024] Two clamping plates, on both of the two clamping plates are provided with third mounting parts, on the two third mounting parts are provided with opposite internal threads, the rotating rod is threadedly connected to the third mounting parts, on the side of the clamping plates facing each other is provided with a second limiting groove, and the second limiting groove matches the shape of the first limiting groove.

[0025] Furthermore, for this pipeline sealing detection device, the clamping assembly further includes:

[0026] A sliding rod, fixed on the fixed frame, arranged on the same side as the rotating rod, at the end of the clamping plate far from the rotating rod is provided with a fourth mounting part, on the fourth mounting part is provided with a fourth mounting hole, and the sliding rod is slidably inserted through the fourth mounting hole;

[0027] Four fixing parts, arranged in pairs and opposite to each other on the side of the fixed frame close to the clamping plate, the sliding rod is fixedly installed between two relatively arranged fixing parts, the rotating rod is installed between the other two relatively arranged fixing parts, and one end of the rotating rod passes through one of the fixing parts.

[0028] Furthermore, for this pipeline sealing detection device, on the bottom plate is provided with a first sliding groove, along the axial direction in which the pipeline is inserted, a first adjusting rod is installed in the first sliding groove, and one end of the first adjusting rod extends outside the bottom plate, and the inflating assembly includes:

[0029] An inflating disc, on the inflating disc is provided with a first mounting part, the first mounting part is slidably installed in the first sliding groove, on the first mounting part is provided with a first mounting hole, and the first adjusting rod is inserted through the first mounting hole;

[0030] An air pump, installed on the bottom plate;

[0031] An air delivery pipe, one end of which is connected to the inflating disc, and the other end is connected to the air pump.

[0032] Furthermore, for this pipeline sealing detection device, on the bottom plate is provided with a second sliding groove, along the axial direction in which the pipeline is inserted, a second adjusting rod is installed in the second sliding groove, and one end of the second adjusting rod extends outside the bottom plate, on the sealing member is provided with a second mounting part, the second mounting part is slidably installed in the second sliding groove, on the second mounting part is provided with a second mounting hole, and the second adjusting rod is inserted through the second mounting hole.

[0033] Furthermore, for this pipeline sealing detection device, it further includes:

[0034] A driving assembly, which includes:

[0035] A toothed ring, connected to the rotating ring;

[0036] A driver, fixedly installed on the fixing frame or the bottom plate;

[0037] A gear, installed at the driving end of the driver, and the gear meshes with the toothed ring.

[0038] Further, in this pipeline sealing detection device, a third sliding groove is further provided on the fixing frame, the third sliding groove is concentric with the mounting hole, a slider is arranged on the outer wall of the rotating ring, and the slider is slidably installed in the third sliding groove.

[0039] The present invention has the following advantages:

[0040] 1. The pipeline sealing detection device provided by the present invention includes a bottom plate, a fixing frame, a marking assembly, an inflation assembly and a seal. The fixing frame is fixedly installed on the bottom plate, and an installation hole for passing through the pipeline is opened in the middle of the fixing frame. The marking assembly is installed on the fixing frame and is located in the installation hole. The marking assembly includes a rotating ring and a connecting block. The rotating ring is rotatably installed in the installation hole, the connecting block is movably connected to the rotating ring, and a first limiting groove for abutting against the outer wall of the pipeline is provided at one end of the connecting block away from the rotating ring. The inside of the connecting block is a cavity for containing the marking liquid, and an air inlet hole and a liquid outlet hole communicating with the cavity are opened on the first limiting groove. The inflation assembly is movably installed on the bottom plate and is located on one side of the fixing frame along the axial direction of the pipeline passing through, and is used for inflating the pipeline. The seal is movably installed on the bottom plate and is located on the other side of the fixing frame, and is arranged opposite to the inflation assembly.

[0041] During use, the pipeline is passed through the rotating ring in the middle of the fixing frame, and the first limiting groove on the connecting block is abutted against the outer wall of the pipeline to be detected. One end of the pipeline is connected to the inflation assembly, and the other end is connected to the seal. The pipeline is inflated through the inflation assembly, and the rotating ring is rotated. If there is a leakage point on the pipeline, the gas in the pipeline will overflow from the leakage point in the pipeline. When the first limiting groove rotates to the leakage point, the overflowing gas enters the cavity through the air inlet hole, and the marking liquid is ejected from the liquid outlet, so as to mark the marking liquid on the leakage point of the outer wall of the pipeline. By moving the inflation assembly and the seal, the pipeline is axially moved in the installation hole, so that different positions on the outer wall of the pipeline can be detected. It has the advantages of simple structure and convenient operation, and provides convenience for the staff to carry out repairs later.

[0042] 2. In the pipeline sealing detection device provided by the present invention, the marking assembly further includes a liquid storage box, a connecting pipe, a first one-way valve and a second one-way valve. Two liquid storage boxes are arranged in the cavity, the marking liquid is stored in the liquid storage box, the liquid outlet hole is communicated with the liquid storage box, the connecting pipe communicates the two liquid storage boxes, the air inlet hole is communicated with the connecting pipe, the first one-way valve is arranged in the liquid outlet hole, and the second one-way valve is arranged in the connecting pipe.

[0043] The first one-way valve in the liquid outlet hole can ensure that the marking liquid flows from the liquid storage box to the liquid outlet hole, preventing the gas at the leakage point from entering the liquid storage box through the liquid outlet hole. The second one-way valve in the connecting pipe can ensure that the gas enters the liquid storage box through the air inlet hole, preventing the marking liquid in the liquid storage box from flowing to the air inlet hole, thus forming a one-way passage among the air inlet hole, the liquid storage box, and the liquid outlet hole, ensuring the reliability of the marking component during use.

[0044] 3. For the pipeline sealing detection device provided by the present invention, the marking component further includes a telescopic rod and an elastic member. The telescopic rod is fixedly installed on the inner wall of the rotating ring. The connecting block is fixedly connected to the end of the telescopic rod away from the rotating ring. The elastic member is sleeved on the telescopic rod and is located between the rotating ring and the connecting block.

[0045] Place the pipeline to be detected in the rotating ring. By adjusting the length of the telescopic rod, the connecting block is abutted against the outer wall of the pipeline to be detected. The elastic member sleeved on the telescopic rod drives the connecting block to firmly abut against the outer wall of the pipeline to be detected through elastic force. During the rotation of the rotating ring, it can ensure that the connecting block always abuts against the outer wall of the pipeline to be detected. By adjusting the length of the telescopic rod, pipelines of different sizes can also be detected, improving the application range of the device.

[0046] 4. For the pipeline sealing detection device provided by the present invention, the first limiting groove is arc-shaped, and a buffer pad is provided on the inner wall of the first limiting groove, which can play a protective role for the outer wall of the pipeline to be detected, avoiding damage to the outer wall of the pipeline during detection and increasing the protective performance of the device.

[0047] 5. The pipeline sealing detection device provided by the present invention further includes a clamping component arranged on one side of the fixed frame and outside the installation hole for fixing the pipeline. The clamping component includes a rotating rod and clamping plates. The rotating rod is rotatably installed on one side of the fixed frame. Opposite external threads are provided at both ends of the rotating rod. Third installation parts are provided on both clamping plates, and opposite internal threads are provided in the two third installation parts. The rotating rod is threadedly connected to the third installation parts. Second limiting grooves are provided on the opposite sides of the clamping plates, and the shapes of the second limiting grooves match those of the first limiting grooves.

[0048] During use, place the pipeline to be detected between the two clamping plates. By adjusting the rotating rod, the clamping plates are moved closer to each other to firmly clamp the pipeline to be detected, increasing the stability of the device. Description of the Drawings

[0049] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0050] Figure 1 Schematic structural diagram of the pipeline sealing detection device provided in the embodiment of the present invention;

[0051] Figure 2 Front view sectional structural diagram of the fixing frame and the marking assembly in the pipeline sealing detection device provided in the embodiment of the present invention;

[0052] Figure 3 Enlarged structural diagram of part A in the pipeline sealing detection device provided in the embodiment of the present invention;

[0053] Figure 4 Stereo structural diagram of the connecting block in the pipeline sealing detection device provided in the embodiment of the present invention;

[0054] Figure 5 Stereo structural diagram of the rotating ring and the toothed ring in the pipeline sealing detection device provided in the embodiment of the present invention;

[0055] Figure 6 Stereo structural diagram of the clamping assembly in the pipeline sealing detection device provided in the embodiment of the present invention.

[0056] Explanation of reference numerals:

[0057] 1, bottom plate; 11, first chute; 12, first adjusting rod; 13, second chute; 14, second adjusting rod; 2, fixing frame; 20, mounting hole; 21, third chute; 3, marking assembly; 31, rotating ring; 311, slider; 32, telescopic rod; 33, connecting block; 331, first limiting groove; 332, liquid outlet hole; 333, liquid storage box; 334, connecting pipe; 335, air inlet hole; 336, first one-way valve; 337, second one-way valve; 34, elastic member; 35, buffer pad; 4, inflation assembly; 41, inflation disc; 411, first mounting part; 42, air pump; 43, air delivery pipe; 5, seal; 51, second mounting part; 6, drive assembly; 61, toothed ring; 62, driver; 63, gear; 7, clamping assembly; 71, rotating rod; 72, clamping plate; 721, second limiting groove; 722, third mounting part; 723, fourth mounting part; 73, sliding rod; 74, fixing part; 75, knob. Detailed implementation manners

[0058] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0059] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0060] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0062] Embodiment 1

[0063] As Figures 1 to 6 shown, the pipeline sealing detection device provided by the present invention includes a bottom plate 1, a fixing frame 2, a marking component 3, an inflation component 4 and a seal 5. The fixing frame 2 is fixedly installed on the bottom plate 1. An installation hole 20 for passing through the pipeline is provided in the middle of the fixing frame 2. The marking component 3 is installed on the fixing frame 2 and is located inside the installation hole 20. The marking component 3 includes a rotating ring 31 and a connecting block 33. The rotating ring 31 is rotatably installed in the installation hole 20, and the connecting block 33 is movably connected to the rotating ring 31. One end of the connecting block 33 away from the rotating ring 31 is provided with a first limiting groove 331 for abutting against the outer wall of the pipeline. The inside of the connecting block 33 is a cavity for accommodating the marking liquid. An air inlet hole 335 and a liquid outlet hole 332 communicating with the cavity are provided on the first limiting groove 331. The inflation component 4 is movably installed on the bottom plate 1 and is located on one side of the fixing frame 2 along the axial direction of the pipeline passing through, for inflating the pipeline. The seal 5 is movably installed on the bottom plate 1 and is located on the other side of the fixing frame 2, opposite to the inflation component 4.

[0064] In this embodiment, no specific limitation is imposed on the pipeline. To conform to the actual situation, the pipeline in this embodiment can be a spiral welded pipe, a straight seam welded pipe or a spliced pipe.

[0065] During use, pass the pipeline through the rotating ring 31 in the middle of the fixing bracket 2, abut the first limiting groove 331 on the connecting block 33 against the outer wall of the pipeline to be detected, then connect one end of the pipeline to the inflation assembly 4 and the other end to the seal 5. Inflate the pipeline through the inflation assembly 4 and rotate the rotating ring 31. If there is a leak in the pipeline, the gas in the pipeline will overflow from the leak. When the first limiting groove 331 rotates to the leak, the overflowing gas enters the cavity through the air inlet hole 335 and sprays the marking liquid out of the liquid outlet, thereby marking the leak on the outer wall of the pipeline with the marking liquid. By moving the inflation assembly 4 and the seal 5, axially move the pipeline in the installation hole 20, so that different positions on the outer wall of the pipeline can be detected. It has the advantages of simple structure and convenient operation, providing convenience for the staff to repair in the later stage.

[0066] As Figure 3 shown, the marking assembly 3 further includes a liquid storage box 333, a connecting pipe 334, a first one-way valve 336 and a second one-way valve 337. Two liquid storage boxes 333 storing marking liquid are arranged in the cavity of the connecting block 33. The connecting pipe 334 communicates the two liquid storage boxes 333. The air inlet hole 335 is communicated with the connecting pipe 334, and the liquid outlet hole 332 is communicated with the liquid storage box 333. The first one-way valve 336 is arranged in the liquid outlet hole 332, and the second one-way valve 337 is arranged in the connecting pipe 334.

[0067] The first one-way valve 336 in the liquid outlet hole 332 can ensure that the marking liquid flows from the liquid storage box 333 to the liquid outlet hole 332, preventing the gas at the leak from entering the liquid storage box 333 through the liquid outlet hole 332. The second one-way valve 337 in the connecting pipe 334 can ensure that the gas enters the liquid storage box 333 through the air inlet hole 335, preventing the marking liquid in the liquid storage box 333 from flowing to the air inlet hole 335, forming a one-way passage among the air inlet hole 335, the liquid storage box 333 and the liquid outlet hole 332, and ensuring the reliability of the marking assembly 3 during use.

[0068] As Figures 2 to 4 shown, the marking assembly 3 further includes a telescopic rod 32 and an elastic member 34. The telescopic rod 32 is fixedly installed on the inner wall of the rotating ring 31, and the connecting block 33 is fixedly connected to the end of the telescopic rod 32 away from the rotating ring 31. The elastic member 34 is sleeved on the telescopic rod 32 and is located between the rotating ring 31 and the connecting block 33.

[0069] In this embodiment, the elastic member 34 is not specifically limited. To conform to the actual situation, the elastic member 34 is a spring in this embodiment.

[0070] Place the pipeline to be detected in the rotating ring 31. By adjusting the length of the telescopic rod 32, the connecting block 33 is abutted against the outer wall of the pipeline to be detected. The elastic member 34 sleeved on the telescopic rod 32 can drive the connecting block 33 to firmly abut against the outer wall of the pipeline to be detected through elastic force. During the rotation of the rotating ring 31, it can be ensured that the connecting block 33 always abuts against the outer wall of the pipeline to be detected. By adjusting the length of the telescopic rod 32, pipelines of different sizes can also be detected, improving the applicable range of the device.

[0071] As Figures 2 to 4 shown, the first limiting groove 331 is arc-shaped, which can make the limiting groove fit more closely with the outer wall of the pipeline to be measured. A buffer pad 35 is provided on the inner wall of the first limiting groove 331, which can play a protective role for the outer wall of the pipeline to be detected, avoiding damage to the outer wall of the pipeline during detection and increasing the protection performance of the device.

[0072] As Figure 1 shown, a first sliding groove 11 is provided on the bottom plate 1. A first adjusting rod 12 is installed in the first sliding groove 11 along the axial direction of the pipeline passing through, and one end of the first adjusting rod 12 extends out of the bottom plate 1. The inflation assembly 4 includes an inflation disc 41, an air pump 42 and an air delivery pipe 43. The air pump 42 is installed on the bottom plate 1. The inflation disc 41 is provided with a first installation part 411 slidably installed in the first sliding groove 11. A first installation hole is opened on the first installation part 411. The first adjusting rod 12 is passed through the first installation hole. One end of the air delivery pipe 43 is connected to the inflation disc 41, and the other end is connected to the air pump 42.

[0073] In this embodiment, no specific limitation is made on the first adjusting rod 12. To conform to the actual situation, in this embodiment, the first adjusting rod 12 is a lead screw. The lead screw is provided with an external thread, the first installation hole is an internal thread hole, and the lead screw is threadedly connected to the first installation hole. By adjusting the first adjusting rod 12, the inflation disc 41 can be moved in the first sliding groove 11.

[0074] A second sliding groove 13 is provided on the bottom plate 1. A second adjusting rod 14 is installed in the second sliding groove 13 along the axial direction of the pipeline passing through, and one end of the second adjusting rod 14 extends out of the bottom plate 1. The sealing member 5 is provided with a second installation part 51 slidably installed in the second sliding groove 13. A second installation hole is opened on the second installation part 51. The second adjusting rod 14 is passed through the second installation hole.

[0075] In this embodiment, no specific limitation is made on the second adjusting rod 14. To conform to the actual situation, in this embodiment, the second adjusting rod 14 is a lead screw. The lead screw is provided with an external thread, the second installation hole is an internal thread hole, and the lead screw is threadedly connected to the second installation hole. By adjusting the second adjusting rod 14, the sealing member 5 can be moved in the second sliding groove 13.

[0076] As Figure 1 and Figure 5As shown, a driving assembly 6 is further installed on the base. The driving assembly 6 includes a toothed ring 61, a driver 62 and a gear 63. The toothed ring 61 is connected to the rotating ring 31. The driver 62 is fixedly installed on the base plate 1. The gear 63 is installed at the driving end of the driver 62, and the gear 63 meshes with the toothed ring 61.

[0077] By driving the gear 63 to rotate through the driver 62, the toothed ring 61 meshing with the gear 63 rotates accordingly, thereby driving the rotating ring 31 to rotate, and then enabling the marking assembly 3 installed on the rotating ring 31 to detect and mark the pipeline to be measured.

[0078] As Figure 2 and Figure 5 shown, a third chute 21 is further provided on the fixing frame 2. The third chute 21 is concentric with the mounting hole 20. A slider 311 is provided on the outer wall of the rotating ring 31, and the slider 311 is slidably installed in the third chute 21.

[0079] As Figure 6 shown, on one side of the fixing frame 2 and outside the mounting hole 20, a clamping assembly 7 for fixing the pipeline is provided. The clamping assembly 7 includes a rotating rod 71 and a clamping plate 72. The rotating rod 71 is rotatably installed on one side of the fixing frame 2. Opposite external threads are provided at both ends of the rotating rod 71. A knob 75 is provided at one end of the rotating rod 71. Third mounting parts 722 are provided on both clamping plates 72, and opposite internal threads are provided in the two third mounting parts 722. The rotating rod 71 is threadedly connected to the third mounting parts 722. Opposite second limiting grooves 721 are provided on the opposite sides of the clamping plates 72, and the second limiting grooves 721 match the shape of the first limiting grooves 331.

[0080] During use, place the pipeline to be detected between the two clamping plates 72. Rotate the knob 75 to rotate the rotating rod 71, thereby driving the third mounting parts 722 on the clamping plates 72 to move on the rotating rod 71. The threads with opposite directions on the rotating rod 71 can make the two opposite clamping plates 72 approach each other to firmly clamp the pipeline to be measured, increasing the stability of the device.

[0081] In this embodiment, the clamping assembly 7 further includes a sliding rod 73 and a fixing part 74. The sliding rod 73 is fixed on the fixing frame 2 and is arranged on the same side as the rotating rod 71. A fourth mounting part 723 is provided at the end of the clamping plate 72 away from the rotating rod 71. A fourth mounting hole is provided in the fourth mounting part 723. The sliding rod 73 is slidably inserted through the fourth mounting hole. Four fixing parts 74 are arranged in pairs on the side of the fixing frame 2 close to the clamping plate 72. The sliding rod 73 is fixedly installed between the two relatively arranged fixing parts 74. The rotating rod 71 is installed between the other two relatively arranged fixing parts 74, and one end of the rotating rod 71 passes through one of the fixing parts 74. By providing the sliding rod 73, when adjusting the clamping plate 72, the sliding rod 73 can support the clamping plate 72, making the clamping assembly 7 more stable.

[0082] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or alterations derived therefrom still fall within the protection scope of the present invention.

Claims

1. A pipeline sealing detection device, characterized in that, Comprising: Bottom plate (1); Fixing frame (2), fixedly installed on the bottom plate (1), an installation hole (20) is formed in the middle of the fixing frame (2) for threading a pipeline; Marking component (3), installed on the fixing frame (2) and located within the installation hole (20), the marking component (3) includes a rotating ring (31), a connecting block (33), two liquid storage boxes (333), a connecting pipe (334), a first one-way valve (336), a second one-way valve (337), a telescopic rod (32) and an elastic member (34), wherein the rotating ring (31) is rotatably installed in the installation hole (20), the connecting block (33) is movably connected to the rotating ring (31), one end of the connecting block (33) away from the rotating ring (31) is provided with a first limiting groove (331) for abutting against the outer wall of the pipeline, the interior of the connecting block (33) is a cavity for accommodating marking liquid, a liquid outlet hole (332) and an air inlet hole (335) are formed in the first limiting groove (331), both the liquid outlet hole (332) and the air inlet hole (335) communicate with the cavity, the two liquid storage boxes (333) are arranged in the cavity, the liquid outlet hole (332) communicates with the liquid storage box (333), the marking liquid is stored in the liquid storage box (333), the connecting pipe (334) connects the two liquid storage boxes (333), the air inlet hole (335) communicates with the connecting pipe (334), the first one-way valve (336) is arranged in the liquid outlet hole (332), the second one-way valve (337) is arranged in the connecting pipe (334), the telescopic rod (32) is fixedly installed on the inner wall of the rotating ring (31), the connecting block (33) is fixedly connected to the end of the telescopic rod (32) away from the rotating ring (31), and the elastic member (34) is sleeved on the telescopic rod (32) and is located between the rotating ring (31) and the connecting block (33); Inflating component (4), movably installed on the bottom plate (1) and located on one side of the fixing frame (2) along the axial direction of the pipeline threading for inflating the pipeline; Sealing member (5), movably installed on the bottom plate (1) and located on the other side of the fixing frame (2), opposite to the inflating component (4).

2. The pipeline sealing detection device according to claim 1, wherein The first limiting groove (331) is arc-shaped, and a buffer pad (35) is provided on the inner wall of the first limiting groove (331).

3. The pipeline sealing detection device according to any one of claims 1 or 2, characterized in that A first sliding groove (11) is provided on the bottom plate (1), a first adjusting rod (12) is installed in the first sliding groove (11) along the axial direction of the pipeline threading, and one end of the first adjusting rod (12) extends outside the bottom plate (1), and the inflating component (4) includes: An inflatable disc (41), a first mounting portion (411) is provided on the inflatable disc (41), the first mounting portion (411) is slidably mounted in the first chute (11), a first mounting hole is formed in the first mounting portion (411), and the first adjusting rod (12) is inserted through the first mounting hole; An air pump (42), mounted on the base plate (1); An air delivery pipe (43), one end of which is connected to the inflatable disc (41) and the other end of which is connected to the air pump (42).

4. The pipeline sealing detection device according to claim 3, characterized in that, A second chute (13) is provided on the base plate (1), a second adjusting rod (14) is mounted in the second chute (13) along the axial direction of the pipeline passing through, and one end of the second adjusting rod (14) extends outside the base plate (1). A second mounting portion (51) is provided on the sealing member (5), the second mounting portion (51) is slidably mounted in the second chute (13), a second mounting hole is formed in the second mounting portion (51), and the second adjusting rod (14) is inserted through the second mounting hole.

5. The pipeline sealing detection device according to claim 4, wherein Further included: A driving assembly (6), which includes: A toothed ring (61), connected to the rotating ring (31); A driver (62), fixedly mounted on the fixing frame (2) or the base plate (1); A gear (63), mounted on the driving end of the driver (62), and the gear (63) meshes with the toothed ring (61).

6. The pipeline sealing detection device according to claim 5, characterized in that, A third chute (21) is further provided on the fixing frame (2), the third chute (21) is concentric with the mounting hole (20), a slider (311) is provided on the outer wall of the rotating ring (31), and the slider (311) is slidably mounted in the third chute (21).

7. The pipeline sealing detection device according to any one of claims 4-6, characterized in that, Further included: A clamping assembly (7), provided on one side of the fixing frame (2) and located outside the mounting hole (20) for fixing the pipeline, including: A rotating rod (71), rotatably mounted on one side of the fixing frame (2), and opposite external threads are provided at both ends of the rotating rod (71); Two clamping plates (72), third mounting portions (722) are provided on both of the two clamping plates (72), opposite internal threads are formed in the two third mounting portions (722), the rotating rod (71) is threadedly connected to the third mounting portions (722), a second limiting groove (721) is provided on the opposite side of the clamping plate (72), and the second limiting groove (721) matches the shape of the first limiting groove (331).

8. The pipeline sealing detection device according to claim 7, characterized in that, The clamping assembly (7) further includes: A sliding rod (73), fixed on the fixing frame (2) and arranged on the same side as the rotating rod (71). A fourth mounting portion (723) is provided at one end of the clamping plate (72) away from the rotating rod (71), a fourth mounting hole is provided in the fourth mounting portion (723), and the sliding rod (73) slidably passes through the fourth mounting hole; Four fixing parts (74), which are arranged in pairs and oppositely on one side of the fixing frame (2) close to the clamping plate (72), the sliding rod (73) is fixedly installed between two oppositely arranged fixing parts (74), the rotating rod (71) is installed between the other two oppositely arranged fixing parts (74), and one end of the rotating rod (71) passes through one of the fixing parts (74).

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