Underlying turnover type pipeline hydrostatic test back wall
By using a steel plate box to fill concrete and connect I-steel, combined with auxiliary push parts and auxiliary support side walls, the back wall production of pipeline water pressure test is realized, solving the problem of cumbersome, time-consuming and unreusable back wall production in the prior art, reducing cost consumption.
Patent Information
- Application Number
- CN202421825244.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-30
AI Technical Summary
In the pipeline water pressure test, the back wall production process is cumbersome, time-consuming and unreusable, resulting in high cost consumption.
The back wall of the under-lying turnover pipeline water pressure test is used, concrete is filled with steel plate boxes, and I-steel is connected in the middle position, and auxiliary pushers and auxiliary support side walls are combined to realize the water pressure test of the pipeline.
The production process of the back wall is simplified, the production time is shortened, and the water pressure test can be recycled and reused after the water pressure test is completed, reducing the cost consumption of pipeline water pressure test.
Smart Images
Figure CN222994145U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of back walls, in particular to a lying - turnover type pipeline hydraulic test back wall. Background Art
[0002] At present, the construction of newly built, renovated (expanded) urban water supply and drainage pipeline projects is increasing day by day. After the installation and construction of water supply pipelines are completed, hydraulic tests must be carried out in accordance with relevant professional acceptance codes, and the hydraulic tests must pass the acceptance. And the code requires that the length of the pipe section for the hydraulic test should not be greater than 1.0 km. Therefore, water supply and drainage pipelines are usually divided into several sections for pressure testing. During the hydraulic test, a huge horizontal axial thrust will be generated at the pipe end, and all this thrust acts on the back wall of the pressure - testing section. If the back wall is not firm, longitudinal displacement will occur at the pipe end, resulting in the pulling out of the joints, and even circumferential cracking of the pipe body and extrusion of the rubber ring, which is extremely likely to cause safety accidents and must be taken seriously.
[0003] In order to ensure the pressure - testing strength of the back wall, the back wall is usually a cast - in - place reinforced concrete rigid wall, which is set on the ground. Its production process requires a series of steps such as steel bar binding, formwork erection, concrete pouring, concrete curing, and formwork removal. If such a back wall is used, not only is the production process cumbersome and time - consuming, but also the back wall needs to be demolished after the pressure - testing is over and cannot be reused, which increases the cost consumption of the pipeline hydraulic test. Content of the Utility Model
[0004] In order to reduce the cost consumption of the pipeline hydraulic test, this application provides a lying - turnover type pipeline hydraulic test back wall.
[0005] The lying - turnover type pipeline hydraulic test back wall provided by this application adopts the following technical scheme:
[0006] A lying - turnover type pipeline hydraulic test back wall includes a steel plate box. The steel plate box is placed on the ground, and the top of the steel plate box is open. A weight - reducing groove is arranged in the middle of the steel plate box, and an I - beam is connected in the weight - reducing groove. The steel plate box is filled with concrete. Auxiliary pushing side walls and auxiliary supporting side walls are arranged on the surface of the steel plate box. The auxiliary pushing side walls and the auxiliary supporting side walls are arranged opposite to each other. A number of auxiliary pushing members for resisting the pipeline are connected to the auxiliary pushing side walls, and a number of auxiliary supporting members for supporting the steel plate box are arranged between the auxiliary supporting side walls and the ground.
[0007] By adopting the above technical solution, the staff used a steel plate box filled with concrete as the back wall, used the auxiliary pusher to support the end of the pipeline, and then cooperated with the support on the auxiliary support side wall to achieve the water pressure test of the pipeline. The staff used the steel plate box to wrap the concrete, exerting the force performance of both and improving the strength of the concrete. When making the back wall, the staff only needs to weld a steel plate box in advance, then fill the steel plate box with concrete, and finally connect the I-beam in the weight reduction groove to achieve the production of the back wall. Compared with the existing technology, the back wall production process is simple and time-consuming, and it can be recycled after the water pressure test is completed, and can be reused for the next water pressure test, reducing the cost of pipeline water pressure testing.
[0008] Optionally, a plurality of lifting rings are connected to the inner wall of the steel plate box near the top of the steel plate box, and the lifting rings are partially located inside the concrete.
[0009] By adopting the above technical solution, the lifting ring is used to assist in the transportation of steel plate boxes, and the lifting ring is doubly fixed by the steel plate box and concrete, which further improves the load-bearing capacity of the lifting ring.
[0010] Optionally, a foundation pit is provided on the ground at a position corresponding to the steel plate box, the bottom end of the steel plate box is located in the foundation pit, and the space between the inner wall of the foundation pit and the steel plate box is filled with graded crushed stone.
[0011] By adopting the above technical solution, the prior art also has a foundation pit dug on the ground, and then reserved the original soil of the foundation pit, and after the back wall is placed in the foundation pit, the original soil of the foundation pit is backfilled to consolidate the back wall. This requires high compressibility of the original soil of the foundation pit. If the soil is soft, the soil needs to be reinforced. The staff dug the foundation pit once and used graded crushed stone to fill the area between the inner wall of the foundation pit and the back wall. The graded crushed stone has high durability and compressive strength, which further provides stable support for the back wall and further improves the axial resistance of the back wall.
[0012] Optionally, the auxiliary push member is a hydraulic cylinder, one end of the auxiliary push member is connected to the auxiliary push side wall, and the other end is connected to a blind plate for abutting against the end of the pipeline.
[0013] By adopting the above technical solution, the staff uses the cooperation of the hydraulic cylinder and the blind plate to press against the end of the pipeline to compensate or eliminate the pipeline displacement caused by the axial displacement of the back wall, so that the back wall can better press against the pipeline.
[0014] Optionally, a plurality of vertical channel steels and transverse channel steels are connected to the auxiliary push side wall, one end of the auxiliary push member is connected to the junction between the vertical channel steel and the transverse channel steel, two clamping plates are connected to the position of the auxiliary push member in the transverse channel steel corresponding to the position of the auxiliary push member, and the auxiliary push member is located between the two clamping plates.
[0015] By adopting the above technical solution, the staff used the coordination of vertical channel steel, transverse channel steel and clamping plate to limit the installation position of the auxiliary thrust piece, ensuring that the auxiliary thrust piece evenly receives the horizontal thrust of the blind plate.
[0016] Optionally, the auxiliary support member is a diagonal support steel, the auxiliary support member is inclined, the top end of the auxiliary support member is connected to the auxiliary support side wall, the bottom end of the auxiliary support member is connected to a connecting plate, and the connecting plate is in contact with the ground.
[0017] By adopting the above technical solution, the staff uses the connecting plates to make several diagonal bracing steels support the steel box at the same time, so that all parts of the steel box are evenly stressed, further improving the water pressure test stability of the steel box.
[0018] Optionally, support pads are connected between the auxiliary support side walls and the connecting plates, the support pads are arranged in an isosceles right triangle, and the auxiliary support member is connected between two of the support pads.
[0019] By adopting the above technical solution, the staff used the support pads as connecting parts, so that the support parts were better connected between the auxiliary supporting side walls and the connecting plates, further improving the pressure test stability of the steel plate box.
[0020] Optionally, a plurality of support plates are connected to the bottom wall of the connecting plate, a plurality of saw teeth are provided on the bottom wall of the support plate, and the saw teeth are embedded in the ground.
[0021] By adopting the above technical solution, the staff embedded the saw teeth into the ground, which increased the friction between the steel box and the ground and improved the anti-slip ability of the steel box.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. The staff used a steel plate box filled with concrete as the back wall, and used the auxiliary pusher to support the end of the pipe, and then cooperated with the support on the auxiliary support side wall to realize the water pressure test of the pipe. The staff used the steel plate box to wrap the concrete, giving full play to the force-bearing performance of both and improving the strength of the concrete. When making the back wall, the staff only needs to weld a steel plate box in advance, then fill the steel plate box with concrete, and finally connect the I-beam in the weight-reducing groove to realize the production of the back wall. Compared with the existing technology, the back wall production process is simple and time-consuming, and it can be recycled after the water pressure test is completed, and can be reused for the next water pressure test, reducing the cost of pipeline water pressure testing. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of the back wall in the embodiment of the present application.
[0025] Figure 2It is a schematic diagram of the structure of the steel plate box in the embodiment of the present application.
[0026] Figure 3 It is a diagram used to reflect the installation status of the steel plate box in the foundation pit in the embodiment of the present application.
[0027] Figure 4 It is a structural schematic diagram of the auxiliary push member in the embodiment of the present application.
[0028] Figure 5 It is a schematic diagram of the structure of the auxiliary support member in the embodiment of the present application.
[0029] Explanation of the reference numerals in the accompanying drawings: 1. Steel plate box; 11. Weight reduction groove; 12. I-beam; 13. Lifting ring; 14. Auxiliary push side wall; 15. Horizontal channel steel; 16. Vertical channel steel; 17. Clamp plate; 18. Auxiliary support side wall; 2. Foundation pit; 21. Graded crushed stone; 3. Auxiliary push piece; 31. Blind plate; 4. Auxiliary support piece; 41. Support pad; 5. Connecting plate; 51. Support plate; 52. Sawtooth. DETAILED DESCRIPTION
[0030] The following is combined with Figures 1 - 5 This application is described in further detail.
[0031] The present application embodiment discloses a bottom-lying rotary pipeline water pressure test back wall. Figure 1 and Figure 2 The back wall of the lying turnover pipeline water pressure test includes a steel plate box 1, which is set in a rectangular shape, with an opening at the top end, a weight reduction groove 11 is set in the middle of the steel plate box 1, and an I-beam 12 is welded in the weight reduction groove 11. The I-beam 12 is used to improve the structural strength of the steel plate box 1 and improve the anti-deformation performance of the steel plate box 1. The steel plate box 1 is filled with concrete.
[0032] Since a large amount of pollutants are generated during the production of concrete, this method avoids the use of a large amount of concrete compared to traditional integral cast-in-place reinforced concrete back walls, and does not require the use of steel bars, thus achieving the goal of green construction.
[0033] Reference Figure 2 In order to better transport the steel box 1, the four inner walls of the steel box 1 are welded with lifting rings 13 near the top of the steel box 1, and the bottom of the lifting ring 13 is anchored in the concrete. The double connection between the steel box 1 and the concrete further improves the connection strength of the lifting ring 13 and the load-bearing capacity of the lifting ring 13.
[0034] Reference Figure 2A foundation pit 2 is arranged at the position of the ground corresponding to the steel plate box 1, and the steel plate box 1 is partially arranged in the foundation pit 2, and the foundation pit 2 is filled with graded crushed stones 21. The staff fills the graded crushed stones 21 in the foundation pit 2, and can use equipment to compact the graded crushed stones 21, which can reduce the gaps between the graded crushed stones 21, improve the compactness of the graded crushed stones 21, and further improve the compressive stability of the steel plate box 1.
[0035] Reference Figure 4 One side of the steel plate box 1 is an auxiliary push side wall 14, on which a plurality of transverse channel steels 15 and vertical channel steels 16 are welded. In this embodiment, three transverse channel steels 15 and three vertical channel steels 16 are used as examples, and the transverse channel steels 15 pass through the vertical channel steels 16. An auxiliary push piece 3 is provided at the junction of the transverse channel steel 15 and the vertical channel steel 16. The auxiliary push piece 3 is a hydraulic cylinder, and one end of the auxiliary push piece 3 is welded to the transverse channel steel 15. Clamping plates 17 are welded on both sides of the inner wall of the transverse channel steel 15 corresponding to the auxiliary push piece 3, and one end of the auxiliary push piece 3 is located between the two clamping plates 17. A blind plate 31 for contacting the end of the pipeline is welded to the other end of the auxiliary push piece 3.
[0036] The transverse channel steels 15 and the vertical channel steels 16 are arranged alternately to assist in positioning the installation position of the auxiliary push member 3. The clamping plate 17 is used to limit the auxiliary push member 3 and cooperate with the blind plate 31 to distribute the pressure so that the auxiliary push member 3 evenly bears the axial thrust.
[0037] Reference Figure 5 , one side wall of the steel plate box 1 is an auxiliary support side wall 18, and the auxiliary support side wall 18 is arranged opposite to the auxiliary push side wall 14. A plurality of auxiliary support members 4 are arranged on one side of the auxiliary push side wall 14, and the auxiliary support members 4 are diagonal support steels. In this embodiment, six auxiliary support members 4 are arranged. A connecting plate 5 is arranged at the bottom end of the auxiliary support member 4, and the connecting plate 5 is a steel plate. Support pads 41 are welded at the positions between the connecting plate 5 and the auxiliary support side wall 18 corresponding to the auxiliary support members 4, and the support pads 41 are arranged in an isosceles right triangle, and the auxiliary support member 4 is welded between two support pads 41. A plurality of support plates 51 are welded on the bottom wall of the connecting plate 5, and five plates are taken as an example in this embodiment. A plurality of serrations 52 are arranged at the bottom end of the support plate 51, and the serrations 52 are embedded in the ground.
[0038] The staff uses the support pad 41 to better connect the auxiliary support 4, thereby improving the stability of the steel plate box 1. The staff also uses the saw teeth 52 to embed into the ground to increase the friction between the connecting plate 5 and the ground, thereby further improving the stability of the steel plate box 1.
[0039] The implementation principle of the rear back wall of a lying revolving pipeline water pressure test in an embodiment of the present application is as follows: during construction, the staff digs a foundation pit 2 on the ground, then puts a steel plate box 1 into the foundation pit 2, fills the foundation pit 2 with graded gravel 21, and then uses equipment to compact the graded gravel 21, and then starts the hydraulic cylinder to drive the blind plate 31 to move until the blind plate 31 is pressed against the end of the pipeline, thereby realizing the construction of the rear back wall.
[0040] This hydrostatic test back wall can be constructed without reserving the original soil in the foundation pit, and has the characteristics of low cost, simple construction, environmental protection, safety and reliability, short construction period, and reusable. It conforms to the national "dual carbon" development goal, has good economic and social benefits, and can be widely used in the hydrostatic test of pressure pipelines.
[0041] When prefabricating the back wall, the staff welds the I-beam 12 in the weight reduction groove 11, then welds the lifting ring 13 at the top of the steel plate box 1, and finally fills the steel plate box 1 with concrete until the bottom end of the lifting ring 13 is submerged. After the concrete cools, the prefabrication of the back wall is completed.
[0042] The staff uses the steel plate box 1 to wrap the concrete, giving full play to the mechanical properties of both and improving the strength of the concrete. When making the back wall, the staff only needs to weld a steel plate box 1 in advance, then fill the inside of the steel plate box 1 with concrete, and finally connect the I-beam 12 in the weight reduction groove 11 to complete the production of the back wall. Compared with the existing technology, the production process of the back wall is simpler, takes less time, can be recycled after the hydrostatic test, and can be reused for the next hydrostatic test, reducing the cost consumption of the pipeline hydrostatic test.
[0043] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.
Claims
1. A rear wall for a horizontal rotating pipeline water pressure test, characterized in that: The invention comprises a steel plate box (1), wherein the steel plate box (1) is placed on the ground, the top end of the steel plate box (1) is provided with an opening, a weight reduction groove (11) is provided in the middle of the steel plate box (1), an I-beam (12) is connected to the weight reduction groove (11), the steel plate box (1) is filled with concrete, an auxiliary push side wall (14) and an auxiliary support side wall (18) are provided on the surface of the steel plate box (1), the auxiliary push side wall (14) and the auxiliary support side wall (18) are arranged opposite to each other, a plurality of auxiliary push members (3) for supporting a pipeline are connected to the auxiliary push side wall (14), and a plurality of auxiliary support members (4) for supporting the steel plate box (1) are provided between the auxiliary support side wall (18) and the ground.
2. The rear wall for the lying turnover type pipeline water pressure test according to claim 1 is characterized in that: A plurality of lifting rings (13) are connected to the inner wall of the steel plate box (1) at positions close to the top of the steel plate box (1), and parts of the lifting rings (13) are located inside the concrete.
3. The rear wall for the lying turnover type pipeline water pressure test according to claim 1 is characterized in that: A foundation pit (2) is arranged on the ground at a position corresponding to the steel plate box (1), the bottom end of the steel plate box (1) is located in the foundation pit (2), and the space between the inner wall of the foundation pit (2) and the steel plate box (1) is filled with graded crushed stone (21).
4. The rear wall for the lying turnover type pipeline water pressure test according to claim 1 is characterized in that: The auxiliary push member (3) is a hydraulic cylinder, one end of the auxiliary push member (3) is connected to the auxiliary push side wall (14), and the other end is connected to a blind plate (31) for contacting the end of the pipeline.
5. The rear wall for the lying turnover type pipeline water pressure test according to claim 4 is characterized in that: A plurality of vertical channel steels (16) and transverse channel steels (15) are connected to the auxiliary thrust side wall (14); one end of the auxiliary thrust member (3) is connected to the junction between the vertical channel steel (16) and the transverse channel steel (15); two clamping plates (17) are connected to the position of the auxiliary thrust member (3) in the transverse channel steel (15); and the auxiliary thrust member (3) is located between the two clamping plates (17).
6. The rear wall for the lying turnover type pipeline water pressure test according to claim 1 is characterized in that: The auxiliary support member (4) is a diagonal support steel, the auxiliary support member (4) is arranged obliquely, the top end of the auxiliary support member (4) is connected to the auxiliary support side wall (18), and the bottom end of the auxiliary support member (4) is connected to a connecting plate (5), and the connecting plate (5) contacts the ground.
7. The rear wall for the lying rotary pipeline water pressure test according to claim 6 is characterized in that: A support pad (41) is connected between the auxiliary support side wall (18) and the connecting plate (5); the support pad (41) is arranged in the shape of an isosceles right triangle, and the auxiliary support member (4) is connected between two of the support pads (41).
8. The rear wall for the lying turnover type pipeline water pressure test according to claim 6 is characterized in that: A plurality of support plates (51) are connected to the bottom wall of the connection plate (5), a plurality of saw teeth (52) are arranged on the bottom wall of the support plate (51), and the saw teeth (52) are embedded in the ground.