CN216789894U - External pressure bearing performance testing device for liner repair structure of rigid pipeline - Google Patents
External pressure bearing performance testing device for liner repair structure of rigid pipeline Download PDFInfo
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- CN216789894U CN216789894U CN202122862293.2U CN202122862293U CN216789894U CN 216789894 U CN216789894 U CN 216789894U CN 202122862293 U CN202122862293 U CN 202122862293U CN 216789894 U CN216789894 U CN 216789894U
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Abstract
The utility model provides a device for testing external pressure bearing performance of a liner repair structure of a rigid pipeline, wherein a water injection hole penetrates through the top wall of the rigid pipeline; the lining repairing structure is arranged in the rigid pipeline, is opposite to the water injection hole and is in sealing fit with the inner side wall of the rigid pipeline; the water injection mechanism injects high-pressure water into the water injection holes; the water pressure monitor is used for monitoring the pressure of the high-pressure water. The technical scheme provided by the utility model has the beneficial effects that: injecting water into the connecting pipe by using a water injection mechanism, and pressing the water into the space between the inner lining repairing structure and the inner side wall of the rigid pipeline; continuously pressurizing the water injection mechanism, monitoring the shape change of the lining repair structure and the water leakage condition between the lining repair structure and the inner side wall of the rigid pipeline, and monitoring the water injection pressure by using a water pressure monitor; when water leakage occurs between the liner repairing structure and the inner side wall of the rigid pipeline, water injection is stopped, water injection pressure during water leakage is recorded, and external pressure bearing performance of the liner repairing structure of the rigid pipeline can be obtained.
Description
Technical Field
The utility model relates to the technical field of underground pipeline repairing and reinforcing, in particular to an external pressure bearing performance testing device for a liner repairing structure of a rigid pipeline.
Background
Concrete pipelines are commonly used pipes for urban drainage pipelines, then with the increase of the burying times of the concrete pipelines, diseases such as cracks, leakage and the like appear on part of the concrete pipelines, and in order to reduce disasters, the existing pipelines are urgently needed to be repaired. For the concrete pipeline with local fracture and leakage, the adoption of the stainless steel ring to expand the local lining for repair is a convenient and quick trenchless repair technology with low cost, thereby being widely applied and being applied to the national industry standard. However, the research data of the external water pressure which can be borne by the local lining of the concrete pipe with the expansion ring is poor.
Therefore, it is an urgent need to solve the problem of reasonably determining the designed wall thickness of the liner repair of the expanded local part of the stainless steel ring, and a rigid pipeline liner repair structure external pressure bearing performance testing device is needed to be provided to solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
In view of the above, to solve the above problems, embodiments of the present invention provide an apparatus for testing external pressure bearing performance of a liner repair structure of a rigid pipe.
The embodiment of the utility model provides a device for testing external pressure bearing performance of a liner repair structure of a rigid pipeline, which comprises:
the top wall of the rigid pipeline is provided with a water injection hole in a penetrating way;
the lining repairing structure is arranged in the rigid pipeline, is opposite to the water injection hole and is in sealing fit with the inner side wall of the rigid pipeline;
the water injection mechanism injects high-pressure water into the water injection holes; and the number of the first and second groups,
and the water pressure monitor is used for monitoring the pressure of the high-pressure water.
Furthermore, the water injection mechanism also comprises a water injection pipe, the water injection pipe is connected with the water injection hole in a sealing mode, and the water injection mechanism injects high-pressure water into the water injection pipe.
Furthermore, the water injection pipe comprises a connecting pipe and an annular flanging formed by outwards protruding the lower end of the connecting pipe, the annular flanging is matched with the inner side wall of the rigid pipeline, the upper end of the water injection pipe penetrates out of the water injection hole so that the annular flanging is attached to the inner side wall of the rigid pipeline, and the connecting pipe is connected with the water injection hole in a sealing mode.
Further, a sealing filler is filled between the inner side wall of the water injection hole and the outer side wall of the connecting pipe.
Further, the sealing filler is micro-expansion cement; and/or the presence of a gas in the gas,
the water injection hole is arranged in a funnel shape.
Furthermore, the part of the upper end of the connecting pipe penetrating out of the water injection hole is provided with an external thread, and the external thread is matched with a nut so that the connecting pipe is fixed in the water injection hole.
Further, the nut with be equipped with the arc clamp plate between the rigid pipeline, the arc clamp plate with rigid pipeline outside wall looks adaptation, and run through and be equipped with the confession the hole of stepping down that the connecting pipe passed.
Furthermore, an outer annular rubber pad is arranged between the arc-shaped pressing plate and the rigid pipeline.
Furthermore, an inner annular rubber pad is arranged between the annular flanging and the inner side wall of the rigid pipeline; and/or the presence of a gas in the gas,
the water injection mechanism comprises a water tank, a booster pump and a high-pressure water pipe, one end of the high-pressure water pipe is connected with the upper end of the connecting pipe, the other end of the high-pressure water pipe is sequentially connected with the booster pump and the water tank, a valve is arranged on the high-pressure water pipe, and the water pressure monitor is used for monitoring the water pressure in the high-pressure water pipe.
Further, the liner repairing structure further comprises a monitoring mechanism, wherein the monitoring mechanism is used for monitoring the shape change of the liner repairing structure; and/or the presence of a gas in the gas,
the rigid pipeline with a plurality of different parameters and the lining repair structure with a plurality of different parameters can be tested for the rigid pipeline with different parameters and the lining repair structure with different parameters.
The technical scheme provided by the embodiment of the utility model has the following beneficial effects: injecting water into the connecting pipe by using a water injection mechanism, and pressing the water into the space between the inner lining repairing structure and the inner side wall of the rigid pipeline; continuously pressurizing the water injection mechanism, monitoring the shape change of the lining repair structure and the water leakage condition between the lining repair structure and the inner side wall of the rigid pipeline, and monitoring the water injection pressure by using a water pressure monitor; when water leakage occurs between the liner repairing structure and the inner side wall of the rigid pipeline, water injection is stopped, water injection pressure during water leakage is recorded, and external pressure bearing performance of the liner repairing structure of the rigid pipeline can be obtained.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of an external pressure bearing performance testing apparatus for a liner repair structure of a rigid pipe according to the present invention;
FIG. 2 is an enlarged partial schematic view at A of FIG. 1;
fig. 3 is a schematic view of the structure of the water injection pipe of fig. 1.
In the figure: the water injection device comprises a rigid pipeline 1, a water injection hole 1a, a water injection pipe 2, a connecting pipe 2a, an annular flanging 2b, an inner annular rubber gasket 2c, a lining repairing structure 3, an expansion ring 3a, an annular sealing sleeve 3b, a water injection mechanism 4, a water tank 4a, a pressure pump 4b, a high-pressure water pipe 4c, a valve 4d, a water pressure monitor 5, a nut 6, an arc-shaped pressure plate 7, an outer annular rubber gasket 8 and a sealing filler 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 3, an embodiment of the present invention provides an external pressure bearing performance testing apparatus for a liner repair structure of a rigid pipeline, including a rigid pipeline 1, a liner repair structure 3, a water injection mechanism 4, a water pressure monitor 5, and a monitoring mechanism.
A water injection hole 1a is arranged on the top wall of the rigid pipeline 1 in a penetrating manner, and a lining repairing structure 3 is arranged in the rigid pipeline 1, is opposite to the water injection hole 1a and is in sealing fit with the inner side wall of the rigid pipeline 1; the water injection mechanism 4 injects high-pressure water into the water injection hole 1a, and the water pressure monitor 5 is used for monitoring the pressure of the high-pressure water.
Injecting water into the water injection hole 1a by using a water injection mechanism 4, and injecting water into a space between the lining repairing structure 3 and the inner side wall of the rigid pipeline 1, wherein the water injection mechanism 4 continuously pressurizes to monitor the shape change of the lining repairing structure 3 and the water leakage condition between the lining repairing structure 3 and the inner side wall of the rigid pipeline 1, and the water injection pressure is monitored by using a water pressure monitor 5; when water leakage occurs between the lining repairing structure 3 and the inner side wall of the rigid pipeline 1, water injection is stopped, water injection pressure during water leakage is recorded, and external pressure bearing performance of the lining repairing structure of the rigid pipeline can be obtained.
Further, water injection pipe 2 with water injection hole 1a sealing connection, water injection mechanism 4 to inject the water under high pressure into water injection pipe 2, through setting up water injection pipe 2, for the water under high pressure provides a high pressure space, be convenient for impress the water under high pressure to between rigid pipeline 1 and the inside lining repair structure 3.
Specifically, water injection pipe 2 includes connecting pipe 2a and certainly the annular turn-ups 2b that the outside protrusion of connecting pipe 2a lower extreme formed, annular turn-ups 2b with 1 inside wall of rigid pipeline is the adaptation, 2 upper ends of water injection pipe are followed water injection hole 1a is worn out so that annular turn-ups 2b with the laminating of 1 inside wall of rigid pipeline, connecting pipe 2a with water injection hole 1a sealing connection. The setting of annular turn-ups 2b can be with water injection pipe 2 spacing in water injection hole 1a, when pouring into the water under high pressure into between rigid pipe 1 and the inside lining restoration structure 3, can avoid water injection pipe 2 to be extruded water injection hole 1a under the effect of water under high pressure.
An annular rubber gasket 2c in the pipe is arranged between the annular flange 2b and the inner side wall of the rigid pipeline 1, the annular rubber gasket 2c in the pipe has elasticity, upward pressure is applied to the annular flange 2b, and no gap exists between the annular flange 2b and the inner side wall of the rigid pipeline 1, so that the sealing performance of the annular flange is guaranteed.
Specifically, the part of the upper end of the connecting pipe 2a penetrating out of the water injection hole 1a is provided with an external thread, the external thread is matched with the nut 6 so that the connecting pipe 2a is fixed in the water injection hole 1a, and the connecting pipe 2a is simple and convenient to install in a threaded connection mode.
Nut 6 with be equipped with arc clamp plate 7 between the rigid pipeline 1, arc clamp plate 7 with the adaptation of rigid pipeline 1 outside wall, and run through and be equipped with the confession the hole of stepping down that connecting pipe 2a passed, area of contact between increase and the rigid pipeline 1 to increase the stability of connecting pipe 2a installation in water injection hole 1 a. The top of the arc-shaped pressing plate 7 is straight, so that the bottom surface of the nut 6 is better attached to the top surface of the arc-shaped pressing plate 7, and the connection strength of the nut 6 and the connecting pipe 2a is higher.
The outer annular rubber pad 8 is arranged between the arc-shaped pressing plate 7 and the rigid pipeline 1, so that friction force between the arc-shaped pressing plate 7 and the rigid pipeline 1 can be increased, and meanwhile, when the nut 6 rotates to apply downward pressure to the arc-shaped pressing plate 7, the rigid pipeline 1 can be buffered, and the rigid pipeline 1 is prevented from being damaged.
The water injection hole 1a inside wall with it has sealed filler 9 to fill between connecting pipe 2a lateral wall, and sealed filler 9 can be for sealed glue, in this embodiment, sealed filler 9 is little expansion cement, utilizes little expansion cement, is convenient for pour into sealed filler 9 into to connecting pipe 2a and water injection hole 1a between the inside wall, and little expansion cement volume can not take place the shrink in the hardening process, slightly expands, can guarantee the leakproofness between water injection hole 1a inside wall and connecting pipe 2 a.
Further, the water injection holes 1a are formed in a funnel shape, so that the distance between the upper ends of the water injection holes 1a and the outer side wall of the connection pipe 2a is relatively large, so that the micro-expansive cement can be injected into the water injection holes 1a more easily, and preferably, the inclination angle of the inner side wall of the water injection holes 1a is 5-10 degrees.
In other embodiments, a sealing ring may be disposed between the connection pipe 2a and the water filling hole 1a, and the connection pipe 2a is fixed in the water filling hole 1a by friction with the sealing ring.
In this embodiment, the rigid pipeline 1 is a concrete pipeline, the liner repairing structure 3 includes an expansion ring 3a and an annular sealing sleeve 3b sleeved on the periphery of the expansion ring 3a, and the inner diameter of the expansion ring 3a is expanded to make the outer side surface of the annular sealing sleeve 3b abut against the inner side wall of the rigid pipeline 1 and the annular flange 2b, so as to seal the expansion ring 3a and the rigid pipeline 1.
The annular sealing sleeve 3b can be a rubber sealing sleeve or a silica gel sealing sleeve and the like, and the sealing sleeve has better sealing property. The expansion ring 3a is made of stainless steel, the inner diameter of the expansion ring is changeable, a locking structure is arranged on the expansion ring 3a, after the inner diameter of the expansion ring is expanded by the expansion mechanism, the inner diameter of the expansion ring 3a can be fixed by the locking structure, and the expansion ring 3a is the prior art and is not specifically described herein.
In other embodiments, the rigid pipe 1 may be a clay pipe, a steel pipe, a glass fiber reinforced plastic pipe, a plastic rigid pipe, or the like, and the lining repair structure 3 may be a CIPP lining repair, a thermoplastic forming lining repair, or the like.
The water injection mechanism 4 injects high-pressure water into the connecting pipe 2a, the high-pressure water is continuously injected between the lining repairing structure 3 and the rigid pipeline 1, and the water pressure monitor 5 is used for monitoring the pressure of the high-pressure water.
Specifically, water injection mechanism 4 includes water tank 4a, force (forcing) pump 4b and high-pressure water pipe 4c, high-pressure water pipe 4c one end with connecting pipe 2a upper end is connected, the other end in proper order with force (forcing) pump 4b, water tank 4a are connected, be equipped with valve 4d on the high-pressure water pipe 4c, water pressure monitor 5 is used for monitoring water pressure in the high-pressure water pipe 4 c.
The monitoring mechanism is used for monitoring the shape change of the lining repairing structure 3, specifically, the monitoring mechanism comprises a strain gauge and image acquisition equipment, the strain gauge is installed on the lining repairing structure 3, the image acquisition equipment is an industrial camera or a video camera and the like, and the image acquisition equipment is opposite to the lining repairing structure 3.
The rigid pipeline 1 with a plurality of different parameters and the lining repair structure 3 with a plurality of different parameters are arranged, for example, the rigid pipeline 1 has different parameters such as wall thickness, inner diameter and outer diameter, when the lining repair structure 3 is an expansion ring 3a and an annular sealing sleeve 3b, the expansion ring 3a has different parameters such as thickness, and the annular sealing sleeve 3b has different materials and hardness. The parameters of the rigid pipeline 1 and the lining repairing structure 3 are changed to carry out testing, and the external water pressure borne by the rigid pipeline 1 with different parameters and the lining repairing structure 3 with different parameters is analyzed to obtain the optimal performance index and provide guidance for construction design.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a structure external pressure bearing capacity testing arrangement is restoreed to rigid pipe inside lining which characterized in that includes:
the top wall of the rigid pipeline is provided with a water injection hole in a penetrating way;
the lining repairing structure is arranged in the rigid pipeline, is opposite to the water injection hole and is in sealing fit with the inner side wall of the rigid pipeline;
the water injection mechanism injects high-pressure water into the water injection holes; and the number of the first and second groups,
and the water pressure monitor is used for monitoring the pressure of the high-pressure water.
2. The external pressure bearing performance testing device for the liner repair structure of the rigid pipeline as claimed in claim 1, further comprising a water injection pipe, wherein the water injection pipe is hermetically connected with the water injection hole, and the water injection mechanism injects high-pressure water into the water injection pipe.
3. The external pressure bearing performance testing device for the liner repair structure of a rigid pipeline as claimed in claim 2, wherein the water injection pipe comprises a connecting pipe and an annular flange protruding outwards from the lower end of the connecting pipe, the annular flange is fitted to the inner side wall of the rigid pipeline, the upper end of the water injection pipe penetrates out of the water injection hole so that the annular flange is attached to the inner side wall of the rigid pipeline, and the connecting pipe is connected with the water injection hole in a sealing manner.
4. The external pressure bearing performance testing device for the liner repair structure of the rigid pipeline as claimed in claim 3, wherein a sealing filler is filled between the inner side wall of the water injection hole and the outer side wall of the connecting pipe.
5. The external pressure bearing performance test device for the liner repair structure of a rigid pipe as claimed in claim 4, wherein the sealing filler is micro-expansive cement; and/or the presence of a gas in the gas,
the water injection hole is arranged in a funnel shape.
6. The external pressure bearing performance testing device for the liner repair structure of the rigid pipeline as claimed in claim 3, wherein the upper end of the connecting pipe is provided with an external thread at a portion penetrating through the water injection hole, and the external thread is engaged with a nut to fix the connecting pipe in the water injection hole.
7. The external pressure bearing performance testing device for the inner liner repair structure of the rigid pipe as claimed in claim 6, wherein an arc-shaped pressing plate is disposed between the nut and the rigid pipe, the arc-shaped pressing plate is adapted to the outer side wall of the rigid pipe, and a relief hole is formed through the arc-shaped pressing plate for the connecting pipe to pass through.
8. The external pressure bearing performance testing device for the liner repair structure of rigid pipeline as claimed in claim 7, wherein an external annular rubber pad is disposed between the arc-shaped pressing plate and the rigid pipeline.
9. The external pressure bearing performance testing device for the liner repair structure of the rigid pipeline as claimed in claim 3, wherein an inner annular rubber pad is arranged between the annular flange and the inner side wall of the rigid pipeline; and/or the presence of a gas in the gas,
the water injection mechanism comprises a water tank, a pressure pump and a high-pressure water pipe, one end of the high-pressure water pipe is connected with the upper end of the connecting pipe, the other end of the high-pressure water pipe is sequentially connected with the pressure pump and the water tank, a valve is arranged on the high-pressure water pipe, and a water pressure monitor is used for monitoring the water pressure in the high-pressure water pipe.
10. The external pressure bearing performance testing apparatus for a liner repair structure of a rigid pipe as claimed in claim 1, further comprising a monitoring mechanism for monitoring a change in shape of the liner repair structure; and/or the presence of a gas in the gas,
the rigid pipeline with a plurality of different parameters and the lining repair structure with a plurality of different parameters can be tested for the rigid pipeline with different parameters and the lining repair structure with different parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122862293.2U CN216789894U (en) | 2021-11-22 | 2021-11-22 | External pressure bearing performance testing device for liner repair structure of rigid pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122862293.2U CN216789894U (en) | 2021-11-22 | 2021-11-22 | External pressure bearing performance testing device for liner repair structure of rigid pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN216789894U true CN216789894U (en) | 2022-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122862293.2U Active CN216789894U (en) | 2021-11-22 | 2021-11-22 | External pressure bearing performance testing device for liner repair structure of rigid pipeline |
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| CN (1) | CN216789894U (en) |
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2021
- 2021-11-22 CN CN202122862293.2U patent/CN216789894U/en active Active
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