CN115683471A

CN115683471A - Pipeline sealing detection device

Info

Publication number: CN115683471A
Application number: CN202211383616.2A
Authority: CN
Inventors: 喻林波; 寿兵; 何军; 冯国强; 周自林; 张威
Original assignee: Huaneng Yangpu Thermal Power Co Ltd
Current assignee: Huaneng Yangpu Thermal Power Co Ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-02-03

Abstract

The invention relates to the technical field of pipeline detection, in particular to a pipeline sealing detection device which comprises a bottom plate, a fixing frame, a marking assembly, an inflation assembly and a sealing element, wherein a pipeline is arranged in a rotating ring in the middle of the fixing frame in a penetrating mode, a first limiting groove in a connecting block is abutted to the outer wall of the pipeline to be detected, one end of the pipeline is connected with the inflation assembly, the other end of the pipeline is connected with the sealing element, the inflation assembly inflates air into the pipeline and rotates the rotating ring, if a leakage position exists on the pipeline, gas in the pipeline overflows from the leakage position, when the first limiting groove rotates to the leakage position, the overflowing gas enters a cavity from an air inlet, and the marking liquid is sprayed out from a liquid outlet, so that the marking liquid is marked at the leakage position on the outer wall of the pipeline, the pipeline is axially moved in an installation hole by moving the inflation assembly and the sealing element, and therefore different positions of the outer wall of the pipeline can be detected.

Description

Pipeline sealing detection device

Technical Field

The invention relates to the technical field of pipeline detection, in particular to a pipeline sealing detection device.

Background

The conveying pipeline is a device which is connected by pipelines, connecting pieces, valves and the like and used for conveying gas, liquid or fluid with solid particles, is limited by the manufacturing process and the manufacturing cost, the length of the pipelines is generally not too long, the pipelines are often required to be spliced in order to meet different laying requirements, and the spliced pipelines are required to be subjected to sealing detection at the spliced positions in general so as to ensure the sealing performance of the spliced positions of the pipelines.

In the prior art, an invention patent with application number CN202110713777.2 discloses a pipeline sealing performance detection device and a pipeline sealing performance detection method, wherein the pipeline sealing performance detection device includes: a mounting seat; the device comprises an air bag, a hydraulic injection structure and a control device, wherein the air bag is provided with a connecting end arranged in a mounting seat and a measuring end protruding out of the mounting seat, an inflation inlet is formed in the air bag, the measuring end is used for extending into a pipeline to be measured, the hydraulic injection structure is arranged at two opposite ends of the air bag in the length direction and is hermetically connected with the air bag, the hydraulic injection structure is provided with an input end and an output end, and the output end is arranged close to the measuring end and is used for filling fluid into the pipeline to be measured; and the pressure detector is arranged on the hydraulic injection structure and used for detecting the fluid pressure in the hydraulic injection structure. The pipeline sealing performance detection device and the pipeline sealing performance detection method provided by the invention improve the working efficiency of the sealing performance test and reduce the workload of the sealing performance test.

However, in the actual use process, the existing detection device can detect whether the joint has the defect or not, but is difficult to mark the specific position of the defect, and is not beneficial to the later repair of the staff.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects that the specific position of the defect is difficult to mark and the later repair of the worker is not facilitated in the prior art.

In order to solve the above problems, the present invention provides a pipe seal detection apparatus, including:

a base plate;

the fixing frame is fixedly arranged on the bottom plate, and a mounting hole is formed in the middle of the fixing frame and is suitable for penetrating a pipeline;

the marking assembly is arranged on the fixing frame and positioned in the mounting hole, the marking assembly comprises a rotating ring and a connecting block, the rotating ring is rotatably arranged in the mounting hole, the connecting block is movably connected with the rotating ring, a first limiting groove is arranged at one end, far away from the rotating ring, of the connecting block, the first limiting groove is suitable for being abutted against the outer wall of the pipeline, a cavity is formed in the connecting block, marking liquid is suitable for being contained in the cavity, a liquid outlet hole and an air inlet hole are formed in the first limiting groove, and the liquid outlet hole and the air inlet hole are communicated with the cavity;

the inflation assembly is movably arranged on the bottom plate, is positioned on one side of the fixing frame along the axial direction of the pipeline penetration, and is suitable for inflating the pipeline;

and the sealing element is movably arranged on the bottom plate, is positioned on the other side of the fixing frame and is opposite to the inflation assembly.

Further, the pipe sealing detection device, the marking assembly further comprises:

the two liquid storage boxes are arranged in the cavity, the liquid outlet holes are communicated with the liquid storage boxes, and the marking liquid is stored in the liquid storage boxes;

the connecting pipe is communicated with the two liquid storage boxes, and the air inlet 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.

Further, in the pipe sealing detecting device, the marking assembly further includes:

the telescopic rod is fixedly installed on the inner wall of the rotating ring, and the connecting block is fixedly connected with one end, far away from the rotating ring, of the telescopic rod;

the elastic piece is sleeved on the telescopic rod and is positioned between the rotating ring and the connecting block.

Further, according to the pipeline sealing detection device, the first limiting groove is arc-shaped, and a cushion pad is arranged on the inner wall of the first limiting groove.

Further, this pipeline seals detection device still includes:

the centre gripping subassembly sets up mount one side is located the mounting hole outside is suitable for fixedly the pipeline includes:

the rotating rod is rotatably arranged on one side of the fixing frame, and two ends of the rotating rod are provided with opposite external threads;

two grip blocks, two all be equipped with the third installation department on the grip block, two opposite internal thread has been seted up on the third installation department, the dwang with third installation department threaded connection, one side that the grip block is relative is equipped with the second spacing groove, the second spacing groove with first spacing groove shape phase-match.

Further, this sealed detection device of pipeline, the centre gripping subassembly still includes:

the sliding rod is fixed on the fixing frame and arranged on the same side as the rotating rod, a fourth mounting part is arranged at one end, away from the rotating rod, of the clamping plate, a fourth mounting hole is formed in the fourth mounting part, and the sliding rod penetrates through the fourth mounting hole in a sliding mode;

the fixing frame is close to one side of the clamping plate, the sliding rod is fixedly installed between the two fixing parts which are oppositely arranged, the rotating rod is installed between the other two fixing parts which are oppositely arranged, and one end of the rotating rod penetrates through one of the fixing parts.

Further, this sealed detection device of pipeline, be equipped with first spout on the bottom plate, follow in the first spout the axial direction that the pipeline wore to establish installs first regulation pole, just first regulation pole one end is stretched out the bottom plate is outside, the subassembly of aerifing includes:

the first mounting part is slidably mounted in the first sliding groove, a first mounting hole is formed in the first mounting part, and the first adjusting rod penetrates through the first mounting hole;

the air pump is arranged on the bottom plate;

and one end of the gas pipe is connected with the inflation disc, and the other end of the gas pipe is connected with the gas pump.

Further, this pipeline sealing detection device, be equipped with the second spout on the bottom plate, follow in the second spout the axial direction that the pipeline wore to establish installs the second and adjusts the pole, just second regulation pole one end is stretched out the bottom plate is outside, be equipped with the second installation department on the sealing member, second installation department slidable mounting be in the second spout, the second mounting hole has been seted up on the second installation department, the second is adjusted the pole and is worn to establish in the second mounting hole.

Further, this pipeline seals detection device still includes:

a drive assembly, comprising:

the gear ring is connected with the rotating ring;

the driver is fixedly arranged on the fixed frame or the bottom plate;

and the gear is arranged at the driving end of the driver and is meshed with the gear ring.

Furthermore, according to the pipeline sealing detection device, a third sliding groove is further formed in the fixing frame, the third sliding groove is concentric with the mounting hole, and a sliding block is arranged on the outer wall of the rotating ring and is slidably mounted in the third sliding groove.

The invention has the following advantages:

1. the invention provides a pipeline sealing detection device, which comprises a bottom plate, a fixing frame, a marking assembly, an inflating assembly and a sealing element, wherein the fixing frame is fixedly arranged on the bottom plate, a mounting hole suitable for a pipeline to penetrate through is formed in the middle of the fixing frame, the marking assembly is arranged on the fixing frame and is positioned in the mounting hole, the marking assembly comprises a rotating ring and a connecting block, the rotating ring is rotatably arranged in the mounting hole, the connecting block is movably connected with the rotating ring, a first limiting groove suitable for abutting against the outer wall of the pipeline is formed in one end, away from the rotating ring, of the connecting block, a cavity suitable for containing marking liquid is formed in the connecting block, an air inlet hole and a liquid outlet hole which are communicated with the cavity are formed in the first limiting groove, the inflating assembly is movably arranged on the bottom plate and is positioned on one side of the fixing frame in the axial direction in which the pipeline penetrates through, the pipeline is suitable for inflating the pipeline, and the sealing element is movably arranged on the bottom plate and is positioned on the other side of the fixing frame and is opposite to the inflating assembly.

During the use, wear to establish the swivel becket in the middle of the mount with the pipeline, and with the first spacing groove butt on the connecting block on waiting to detect the pipeline outer wall, pipeline one end is connected with gas filled subassembly, the other end is connected with the sealing member, aerify to the pipeline through gas filled subassembly, and rotate the swivel becket, if there is the leak on the pipeline, gas in the pipeline can spill over from the leak in the pipeline, when first spacing groove rotates to the leak, the gas that spills over gets into in the cavity by the inlet port, and spout the mark liquid by the liquid outlet, thereby with the leak of mark liquid mark at the pipeline outer wall, through removing gas filled subassembly and sealing member, with pipeline axial displacement in the mounting hole, thereby can detect the different positions of pipeline outer wall, and has a simple structure, the advantage of simple operation, it provides the convenience to restore for the staff later stage.

2. The invention provides a pipeline sealing detection device, wherein a marking assembly further comprises liquid storage boxes, a connecting pipe, a first check valve and a second check valve, the two liquid storage boxes are arranged in a cavity, marking liquid is stored in the liquid storage boxes, a liquid outlet hole is communicated with the liquid storage boxes, the connecting pipe is communicated with the two liquid storage boxes, an air inlet hole is communicated with the connecting pipe, the first check valve is arranged in the liquid outlet hole, and the second check valve is arranged in the connecting pipe.

The first check valve in the liquid outlet hole can guarantee that the marking liquid flows to the liquid outlet hole from the liquid storage box, gas at the leakage position is prevented from entering the liquid storage box from the liquid outlet hole, the second check valve in the connecting pipe can guarantee that gas enters the liquid storage box from the air inlet hole, the marking liquid in the liquid storage box is prevented from flowing to the air inlet hole, a one-way passage is formed among the air inlet hole, the liquid storage box and the liquid outlet hole, and the reliability of the marking assembly in use is guaranteed.

3. The marking assembly of the pipeline sealing detection device provided by the invention further comprises a telescopic rod and an elastic piece, the telescopic rod is fixedly arranged on the inner wall of the rotating ring, the connecting block is fixedly connected with one end of the telescopic rod, which is far away from the rotating ring, and the elastic piece is sleeved on the telescopic rod and positioned between the rotating ring and the connecting block.

To wait to detect the pipeline and place in the swivel becket, through the length of adjusting the expansion link with the connecting block with wait to detect the outer wall looks butt of pipeline, the elastic component of cover on the expansion link orders about the connecting block through elastic force and waits to detect pipeline outer wall butt firmly, can guarantee the connecting block all the time and wait to detect pipeline outer wall looks butt at the swivel becket rotation in-process, still can detect the not unidimensional pipeline through the length of adjusting the expansion link, improved the application scope of device.

4. According to the pipeline sealing detection device provided by the invention, the first limiting groove is arc-shaped, and the buffer cushion is arranged on the inner wall of the first limiting groove, so that the outer wall of the pipeline to be detected can be protected, the outer wall of the pipeline is prevented from being damaged during detection, and the protection performance of the device is improved.

5. The pipeline sealing detection device provided by the invention further comprises a clamping component which is arranged on one side of the fixing frame and is positioned outside the mounting hole and suitable for fixing a pipeline, wherein the clamping component comprises a rotating rod and clamping plates, the rotating rod is rotatably arranged on one side of the fixing frame, opposite external threads are arranged at two ends of the rotating rod, third mounting parts are arranged on the two clamping plates, opposite internal threads are arranged on the two third mounting parts, the rotating rod is in threaded connection with the third mounting parts, a second limiting groove is arranged on one opposite side of each clamping plate, and the shape of the second limiting groove is matched with that of the first limiting groove.

During the use, will wait to detect the pipeline and place between two grip blocks, it is firm with the pipeline centre gripping that awaits measuring to make the grip block be close to each other through adjusting the dwang, has increased the steadiness of device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a pipeline seal detection device provided in an embodiment of the present invention;

fig. 2 is a schematic front sectional view of a fixing frame and a marking assembly in the pipeline sealing detection apparatus provided in the embodiment of the present invention;

fig. 3 is an enlarged schematic structural view of a portion a of the pipeline seal detection apparatus provided in the embodiment of the present invention;

fig. 4 is a schematic perspective view of a connection block in the pipeline sealing detection apparatus provided in the embodiment of the present invention;

fig. 5 is a schematic perspective view of a rotating ring and a toothed ring in the pipeline sealing detection apparatus provided in the embodiment of the present invention;

fig. 6 is a schematic perspective view of a clamping assembly in the pipeline sealing detection apparatus provided in the embodiment of the present invention.

Description of reference numerals:

1. a base plate; 11. a first chute; 12. a first adjusting lever; 13. a second chute; 14. a second adjusting lever; 2. a fixed mount; 20. mounting holes; 21. a third chute; 3. a marking component; 31. a rotating ring; 311. a slider; 32. a telescopic rod; 33. connecting blocks; 331. a first limit groove; 332. a liquid outlet hole; 333. a liquid storage box; 334. a connecting pipe; 335. an air inlet; 336. a first check valve; 337. a second one-way valve; 34. an elastic member; 35. a cushion pad; 4. an inflation assembly; 41. an inflatable disc; 411. a first mounting portion; 42. an air pump; 43. a gas delivery pipe; 5. a seal member; 51. a second mounting portion; 6. a drive assembly; 61. a toothed ring; 62. a driver; 63. a gear; 7. a clamping assembly; 71. rotating the rod; 72. a clamping plate; 721. a second limit groove; 722. a third mounting portion; 723. a fourth mounting portion; 73. a slide bar; 74. a fixed part; 75. a knob.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

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

Example 1

As shown in fig. 1 to 6, the pipeline sealing detection device provided by the present invention includes a bottom plate 1, a fixing frame 2, a marking assembly 3, an inflation assembly 4 and a sealing element 5, wherein the fixing frame 2 is fixedly installed on the bottom plate 1, an installation hole 20 suitable for a pipeline to penetrate through is formed in the middle of the fixing frame 2, the marking assembly 3 is installed on the fixing frame 2 and located in the installation hole 20, the marking assembly 3 includes a rotating ring 31 and a connecting block 33, the rotating ring 31 is rotatably installed in the installation hole 20, the connecting block 33 is movably connected with the rotating ring 31, a first limiting groove 331 suitable for abutting against an outer wall of a pipeline is arranged at one end of the connecting block 33 far away from the rotating ring 31, a cavity suitable for containing marking liquid is formed inside the connecting block 33, an air inlet hole 335 and a liquid outlet hole 332 communicated with the cavity are formed in the first limiting groove 331, the inflation assembly 4 is movably installed on the bottom plate 1, is located at one side of the fixing frame 2 along an axial direction in which the pipeline penetrates through, and is suitable for inflating the pipeline, the sealing element 5 is movably installed on the bottom plate 1 and located at the other side of the fixing frame 2 and is opposite to the inflation assembly 4.

The embodiment does not specifically limit the pipeline, and the pipeline in the embodiment can be a spiral welded pipe, a straight welded pipe or a spliced pipe in order to meet the practical situation.

During the use, wear to establish the pipeline in the swivel becket 31 in the middle of mount 2, and with first spacing groove 331 butt on the connecting block 33 on waiting to detect the pipeline outer wall, be connected pipeline one end with inflatable component 4 again, the other end is connected with sealing member 5, aerify in to the pipeline through inflatable component 4, and rotate swivel becket 31, if there is the breach on the pipeline, gas in the pipeline can spill over from the breach in the pipeline, when first spacing groove 331 rotates to the breach, the gas that spills over gets into in the cavity by inlet hole 335, and spout mark liquid by the liquid outlet, thereby mark the breach of mark liquid at the pipeline outer wall, through removing inflatable component 4 and sealing member 5, with the pipeline axial displacement in mounting hole 20, thereby can detect the different positions of pipeline outer wall, and has a simple structure, the advantage of simple operation, the convenience is provided for the staff later stage is restoreed.

As shown in fig. 3, the marking assembly 3 further includes a liquid storage box 333, a connecting pipe 334, a first check valve 336 and a second check valve 337, two liquid storage boxes 333 storing marking liquid are disposed in the cavity of the connecting block 33, the connecting pipe 334 is communicated with the two liquid storage boxes 333, the air inlet 335 is communicated with the connecting pipe 334, the liquid outlet 332 is communicated with the liquid storage boxes 333, the first check valve 336 is disposed in the liquid outlet 332, and the second check valve 337 is disposed in the connecting pipe 334.

The first one-way valve 336 in the liquid outlet hole 332 can ensure that the marking liquid flows from the interior of the liquid storage box 333 to the liquid outlet hole 332, gas at the leakage position is prevented from entering the liquid storage box 333 from 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 from the gas inlet hole 335, the marking liquid in the liquid storage box 333 is prevented from flowing to the gas inlet hole 335, a one-way passage is formed among the gas inlet hole 335, the liquid storage box 333 and the liquid outlet hole 332, and the reliability of the marking assembly 3 in use is ensured.

As shown in fig. 2 to 4, the marking assembly 3 further includes an expansion link 32 and an elastic member 34, the expansion link 32 is fixedly mounted on the inner wall of the rotation ring 31, the connection block 33 is fixedly connected with one end of the expansion link 32 far away from the rotation ring 31, and the elastic member 34 is sleeved on the expansion link 32 and located between the rotation ring 31 and the connection block 33.

In this embodiment, the elastic member 34 is not particularly limited, and in order to meet the practical situation, a spring is used as the elastic member 34 in this embodiment.

To wait to detect the pipeline and place in swivel ring 31, length through adjusting telescopic link 32 with connecting block 33 with wait to detect the outer wall looks butt of pipeline, the elastic component 34 of cover on telescopic link 32 can order about connecting block 33 through elastic force and wait to detect the pipeline outer wall butt firmly, rotate the in-process at swivel ring 31 and can guarantee connecting block 33 all the time with wait to detect pipeline outer wall looks butt, length through adjusting telescopic link 32 still can detect not unidimensional pipeline, the application scope of device has been improved.

As shown in fig. 2 to 4, the first limiting groove 331 is arc-shaped, so that the limiting groove can be more attached to the outer wall of the pipeline to be tested, the inner wall of the first limiting groove 331 is provided with a cushion 35, the outer wall of the pipeline to be tested can be protected, the outer wall of the pipeline is prevented from being damaged during detection, and the protection performance of the device is improved.

As shown in fig. 1, be equipped with first spout 11 on the bottom plate 1, install first regulation pole 12 along the axial direction that the pipeline wore to establish in first spout 11, and first regulation pole 12 one end stretches out the bottom plate 1 outside, inflation assembly 4 includes inflatable disk 41, air pump 42 and gas-supply pipe 43, air pump 42 is installed on bottom plate 1, be equipped with the first installation department 411 of slidable mounting in first spout 11 on the inflatable disk 41, first mounting hole has been seted up on the first installation department 411, first regulation pole 12 is worn to establish in first mounting hole, gas-supply pipe 43 one end is connected with inflatable disk 41, the other end is connected with air pump 42.

The first adjusting rod 12 is not specifically limited in this embodiment, and in order to meet the actual conditions, the first adjusting rod 12 in this embodiment adopts a lead screw, the lead screw is provided with an external thread, the first mounting hole is an internal thread hole, the lead screw is in threaded connection with the first mounting hole, and the inflation disc 41 can move in the first chute 11 by adjusting the first adjusting rod 12.

Be equipped with second spout 13 on the bottom plate 1, install the second along the axial direction that the pipeline wore to establish in the second spout 13 and adjust pole 14, and second adjust pole 14 one end and stretch out the bottom plate 1 outside, be equipped with the second installation department 51 of slidable mounting in second spout 13 on the sealing member 5, seted up the second mounting hole on the second installation department 51, the second is adjusted pole 14 and is worn to establish in the second mounting hole.

In this embodiment, the second adjusting rod 14 is not specifically limited, in order to meet the practical situation, in this embodiment, the second adjusting rod 14 is a lead screw, an external thread is provided on the lead screw, the second mounting hole is an internal thread hole, the lead screw is in threaded connection with the second mounting hole, and the sealing member 5 can move in the second chute 13 by adjusting the second adjusting rod 14.

As shown in fig. 1 and 5, a driving assembly 6 is further mounted on the base, and comprises a toothed ring 61, a driver 62 and a gear 63, wherein the toothed ring 61 is connected with the rotating ring 31, the driver 62 is fixedly mounted on the bottom plate 1, the gear 63 is mounted at the driving end of the driver 62, and the gear 63 is meshed with the toothed ring 61.

The gear 63 is driven by the driver 62 to rotate, and the gear ring 61 meshed with the gear 63 rotates along with the gear 63, so that the rotating ring 31 is driven to rotate, and the marking assembly 3 arranged on the rotating ring 31 can detect and mark a pipeline to be detected.

As shown in fig. 2 and 5, the fixing frame 2 is further provided with a third sliding groove 21, the third sliding groove 21 is concentric with the mounting hole 20, the outer wall of the rotating ring 31 is provided with a sliding block 311, and the sliding block 311 is slidably mounted in the third sliding groove 21.

As shown in fig. 6, a clamping assembly 7 suitable for fixing a pipeline is disposed on one side of the fixing frame 2 and outside the mounting hole 20, the clamping assembly 7 includes a rotating rod 71 and clamping plates 72, the rotating rod 71 is rotatably mounted on one side of the fixing frame 2, opposite external threads are disposed at two ends of the rotating rod 71, a knob 75 is disposed at one end of the rotating rod 71, third mounting portions 722 are disposed on two clamping plates 72, opposite internal threads are disposed on the two third mounting portions 722, the rotating rod 71 is in threaded connection with the third mounting portions 722, a second limiting groove 721 is disposed at one side of the clamping plates 72 opposite to the first limiting groove 331, and the second limiting groove 721 is matched with the first limiting groove 331 in shape.

During the use, will wait to detect the pipeline and place between two grip blocks 72, make dwang 71 rotate through rotating knob 75 to the third installation department 722 that drives on the grip block 72 moves on dwang 71, and the opposite screw thread in the direction on dwang 71 can make two relative grip blocks 72 be close to each other firmly with the pipeline centre gripping that awaits measuring, has increased the steadiness of device.

In this embodiment, the clamping assembly 7 further includes a sliding rod 73 and a fixing portion 74, the sliding rod 73 is fixed on the fixing frame 2, the sliding rod 73 is disposed on the same side as the rotating rod 71, a fourth mounting portion 723 is disposed at one end of the clamping plate 72 far away from the rotating rod 71, a fourth mounting hole is disposed on the fourth mounting portion 723, the sliding rod 73 is slidably disposed in the fourth mounting hole, two fixing portions 74 are disposed on one side of the fixing frame 2 close to the clamping plate 72 in a pair, the sliding rod 73 is fixedly mounted between the two fixing portions 74 disposed oppositely, the rotating rod 71 is mounted between the other two fixing portions 74 disposed oppositely, one end of the rotating rod 71 passes through one of the fixing portions 74, by disposing the sliding rod 73, when the clamping plate 72 is adjusted, a supporting effect can be exerted on the clamping plate 72, and the clamping assembly 7 is more stable.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A pipe seal detection apparatus, comprising:

a base plate (1);

the fixing frame (2) is fixedly arranged on the bottom plate (1), and a mounting hole (20) is formed in the middle of the fixing frame (2) and is suitable for a pipeline to penetrate through;

the marking assembly (3) is mounted on the fixed frame (2) and located in the mounting hole (20), the marking assembly (3) comprises a rotating ring (31) and a connecting block (33), the rotating ring (31) is rotatably mounted in the mounting hole (20), the connecting block (33) is movably connected with the rotating ring (31), one end, far away from the rotating ring (31), of the connecting block (33) is provided with a first limiting groove (331), the first limiting groove (331) is suitable for abutting against the outer wall of the pipeline, a cavity is formed inside the connecting block (33), the cavity is suitable for containing marking liquid, a liquid outlet hole (332) and a gas inlet hole (335) are formed in the first limiting groove (331), and the liquid outlet hole (332) and the gas inlet hole (335) are communicated with the cavity;

the inflation assembly (4) is movably arranged on the bottom plate (1), is positioned on one side of the fixing frame (2) along the axial direction in which the pipeline penetrates and is suitable for inflating the pipeline;

and the sealing element (5) is movably arranged on the bottom plate (1), is positioned on the other side of the fixed frame (2) and is opposite to the inflation assembly (4).

2. The pipe seal detection device according to claim 1, wherein the marker assembly (3) further comprises:

two liquid storage boxes (333) arranged in the cavity, the liquid outlet hole (332) is communicated with the liquid storage boxes (333), and the marking liquid is stored in the liquid storage boxes (333);

the connecting pipe (334) is communicated with the two liquid storage boxes (333), and the air inlet hole (335) is communicated with the connecting pipe (334);

a first one-way valve (336) arranged in the liquid outlet hole (332);

a second check valve (337) disposed within the connecting tube (334).

3. The pipe seal detection device according to claim 2, wherein the marker assembly (3) further comprises:

the telescopic rod (32) is fixedly arranged on the inner wall of the rotating ring (31), and the connecting block (33) is fixedly connected with one end, far away from the rotating ring (31), of the telescopic rod (32);

the elastic piece (34) is sleeved on the telescopic rod (32) and is positioned between the rotating ring (31) and the connecting block (33).

4. The pipe seal detection device according to claim 1, wherein the first limit groove (331) is arc-shaped, and a cushion (35) is disposed on an inner wall of the first limit groove (331).

5. The pipeline sealing detection device according to any one of claims 1 to 4, wherein a first sliding chute (11) is provided on the bottom plate (1), a first adjusting rod (12) is installed in the first sliding chute (11) along an axial direction in which the pipeline penetrates, and one end of the first adjusting rod (12) extends out of the bottom plate (1), and the inflation assembly (4) includes:

the inflatable disc (41) is provided with a first mounting part (411), the first mounting part (411) is slidably mounted in the first sliding groove (11), a first mounting hole is formed in the first mounting part (411), and the first adjusting rod (12) penetrates through the first mounting hole;

an air pump (42) mounted on the base plate (1);

and one end of the air pipe (43) is connected with the inflation disc (41), and the other end of the air pipe is connected with the air pump (42).

6. The pipeline sealing detection device according to claim 5, wherein a second sliding groove (13) is formed in the bottom plate (1), a second adjusting rod (14) is installed in the second sliding groove (13) along the axial direction of the pipeline penetrating, one end of the second adjusting rod (14) extends out of the bottom plate (1), a second installation portion (51) is formed in the sealing element (5), the second installation portion (51) is slidably installed in the second sliding groove (13), a second installation hole is formed in the second installation portion (51), and the second adjusting rod (14) penetrates through the second installation hole.

7. The duct seal detection device of claim 6, further comprising:

a drive assembly (6) comprising:

a gear ring (61) connected to the rotating ring (31);

the driver (62) is fixedly arranged on the fixed frame (2) or the bottom plate (1);

a gear (63) mounted at the drive end of the driver (62), the gear (63) being in mesh with the toothed ring (61).

8. The pipeline sealing detection device according to claim 7, wherein a third sliding groove (21) is further formed in the fixed frame (2), the third sliding groove (21) is concentric with the mounting hole (20), a sliding block (311) is arranged on the outer wall of the rotating ring (31), and the sliding block (311) is slidably mounted in the third sliding groove (21).

9. The pipe seal detection apparatus of any one of claims 6-8, further comprising:

the centre gripping subassembly (7), set up in mount (2) one side and be located the mounting hole (20) outside is suitable for fixed the pipeline, includes:

the rotating rod (71) is rotatably arranged on one side of the fixing frame (2), and opposite external threads are arranged at two ends of the rotating rod (71);

two grip blocks (72), two all be equipped with third installation department (722) on grip block (72), two opposite internal thread has been seted up on third installation department (722), dwang (71) with third installation department (722) threaded connection, the relative one side of grip block (72) is equipped with second spacing groove (721), second spacing groove (721) with first spacing groove (331) shape phase-match.

10. The pipe seal detection device of claim 9, wherein the clamp assembly (7) further comprises:

the sliding rod (73) is fixed on the fixing frame (2) and arranged on the same side as the rotating rod (71), a fourth mounting part (723) is arranged at one end, away from the rotating rod (71), of the clamping plate (72), a fourth mounting hole (20) is formed in the fourth mounting part (723), and the sliding rod (73) penetrates through the fourth mounting hole (20) in a sliding mode;

four fixed part (74), two liang of relative settings are in mount (2) are close to one side of grip block (72), slide bar (73) fixed mounting is two relative settings between fixed part (74), dwang (71) are installed two other relative settings between fixed part (74), just dwang (71) one end passes one of them fixed part (74).