Construction method for blocking pipeline between grids

Abstract

The invention relates to the technical field of pipeline plugging, and discloses a construction method for plugging a pipeline between grids, which comprises the following construction steps: 1) forming a manhole in a water inlet pipe and arranging a flange plate; the water outlet pipe comprises a water passing section and a dismounting section between which a plugging position is arranged; 2) draining accumulated water through a manhole; (3) a main beam is arranged at the plugging position, and the main beam is fixedly connected with the inner side wall of the plugging position to form a longitudinal connecting position; (4) secondary beams are arranged at the plugging positions to form connecting positions; the secondary beams and the main beams form cross connection positions; (5) a blocking plate is arranged on the blocking position, the hollowed-out position is correspondingly closed, and the main beam, the secondary beam and the blocking plate form a blocking structure; the plugging plate is provided with an upstream face and a central position in the middle; a pressure relief structure is arranged on the upstream face; 6) recovering water inflow of the water inlet pipe; (7) the demolition section is demolited; and through manhole arrangement, structure optimization, pressure relief design of the plugging plate and convenient dismounting, the plugging construction efficiency of the pipeline between the grids is improved.

Description

Technical Field

[0001] This invention patent relates to the technical field of pipeline sealing, and more specifically, to a construction method for sealing pipelines between bar screens. Background Technology

[0002] Pipe sealing is a crucial part of urban water supply system maintenance, and the quality of the sealing directly affects water supply safety and efficiency.

[0003] In the existing technology, the sealing components of the bar screen pipe are fixed in a single way, often by direct welding or simple support structure. This lacks flexibility and is difficult to adapt to different sealing positions, resulting in frequent manual adjustments during construction, which is time-consuming and labor-intensive.

[0004] Meanwhile, the sealing component lacks a buffer design on the water-facing surface, making it weak in resisting water flow impact. Under high water pressure, it is prone to displacement and damage, requiring additional repair or relocation, which further slows down the construction progress. The construction process is also cumbersome, requiring repeated switching between steps such as drainage, cleaning, fixing, and installation. Furthermore, the removal of the pipe section after sealing is complicated, lacking a clear separation design, making subsequent maintenance and replacement difficult. Summary of the Invention

[0005] The purpose of this invention is to provide a method for sealing pipes between bar screens, which aims to solve the problem of low construction efficiency in the prior art.

[0006] This invention is implemented as follows: a method for sealing pipes between bar screens includes the following construction steps:

[0007] 1) A manhole is made on the inlet pipe, the manhole is connected to the interior of the inlet pipe, and a flange is arranged in the manhole; the inlet pipe is connected to the bar screen, the inlet pipe is connected to the outlet pipe, the outlet pipe includes a water passage section connected to the bar screen reaction tank and a dismantling section connected to the ozone contact tank, the inlet pipe is connected to the water passage section, and a sealing position is provided between the water passage section and the dismantling section;

[0008] 2) Stop the water supply from the inlet pipe and drain the water from the inlet and outlet pipes through the manhole;

[0009] 3) Multiple longitudinally arranged main beams are arranged at intervals along the width direction of the sealing position. The ends of the main beams are fixedly connected to the inner sidewall of the sealing position to form a longitudinal connection position.

[0010] 4) Multiple transversely arranged secondary beams are arranged at intervals along the height direction of the sealing position. The ends of the secondary beams are fixedly connected to the inner sidewall of the sealing position to form transverse connection positions. The secondary beams are cross-connected with the main beams to form cross connection positions.

[0011] The multiple main beams and multiple secondary beams divide the sealing position into multiple hollow areas, and the multiple hollow areas are arranged in an array;

[0012] 5) Multiple sealing plates are arranged at the sealing positions, and the sealing plates are fixedly connected to the secondary beams and the main beams respectively; the multiple sealing plates are arranged in an array to close the multiple hollow positions accordingly, and the multiple main beams, multiple secondary beams and multiple sealing plates form a sealing structure, which isolates the water passage section from the demolition section;

[0013] The sealing plate has a water-facing surface facing the water passage section, and the water-facing surface has a center position in the middle. Along the outer periphery of the sealing plate to the center position, the water-facing surface faces the water passage section in a conical shape, forming a conical surface. The water-facing surface is provided with an elastically deformable pressure-relieving structure.

[0014] 6) Restore water intake to the inlet pipe, and the water flow in the inlet pipe flows to the water passage section. The pressure-reducing structure elastically swings under the impact of the water flow to buffer the impact pressure of the water flow on the sealing plate.

[0015] 7) Remove the section to be demolished.

[0016] Furthermore, in construction step 2), after the water in the inlet and outlet pipes is drained, the dimensions of the sealing position are measured.

[0017] Furthermore, in construction step 2), after measuring the dimensions of the sealing position, the inner wall of the sealing position is descaled.

[0018] Furthermore, in construction step 3), the main beam has a main rear side facing away from the water passage section and a main front side facing the water passage section. The main rear side is connected to a reinforcing strip, which wraps around the main rear side and is fixedly connected to the inner wall of the sealing position.

[0019] Furthermore, in construction step 3), the two sides of the reinforcing strip extend to the two sides of the main beam respectively, and extend outward away from the two sides of the main beam to form a side strip. The side strip is fixedly connected to the inner side wall of the sealing position and is arranged flush with the front side of the main beam. In construction step 5), the sealing plate abuts against the side strip and is fixedly connected to the side strip.

[0020] Furthermore, in construction step 5), the pressure-relief structure includes multiple elastic columns. The bottom of each elastic column is fixed to the water-facing surface to form a fixed end, and the top of each elastic column extends freely outward away from the water-facing surface to form a free end. Adjacent elastic columns are elastically spaced. In construction step 6), as the water in the inlet pipe flows towards the water passage section, the water impacts the multiple elastic columns, causing them to elastically deform and buffer the impact pressure of the water flow on the sealing plate.

[0021] Furthermore, in construction step 5), the height of the elastic column gradually decreases along the direction from the center position to the outer periphery of the sealing plate, and the free ends of the multiple elastic columns are arranged in parallel to form a free end face.

[0022] Furthermore, in construction step 5), the diameter of the elastic column gradually increases along the direction from the free end to the fixed end.

[0023] Furthermore, in construction step 5), a recessed area is formed at the center, and an outer wall is formed around the periphery of the recessed area. The recessed area has a recessed opening facing the water passage section. A rotating shaft is provided in the recessed area. The bottom of the rotating shaft is rotatably inserted into the sealing plate, and the top of the rotating shaft is exposed in the recessed area, forming a connecting end. A transverse shaft is connected to the connecting end. The middle part of the transverse shaft is connected to the connecting end, and the two ends of the transverse shaft extend freely away from each other.

[0024] In construction step 6), as the water in the inlet pipe flows into the water passage section, the water impacts the transverse shaft, and the transverse shaft rotates back and forth to buffer the impact pressure of the water flow.

[0025] Furthermore, in construction step 5), multiple notches are provided on the outer wall, and the multiple notches are arranged circumferentially around the outer wall; in construction step 6), as the water in the inlet pipe flows to the water passage section, the water flows into the recessed area, driving the transverse axis to rotate, and the water in the recessed area flows outward and is dispersed by the multiple notches.

[0026] Compared with the prior art, the method for sealing pipes between bar screens provided by the present invention has the following construction advantages:

[0027] First, manholes are opened and flanges are installed on the water inlet pipe to facilitate construction personnel to quickly enter the pipeline and reduce the time required to set up temporary access channels.

[0028] Secondly, the main beams and secondary beams are arranged in an array to form a hollowed-out area, which optimizes the layout of the sealing structure, reduces weight, makes the installation of the sealing plate more convenient, and shortens the construction time.

[0029] Furthermore, the sealing plate's water-facing surface is designed with a conical protrusion and an elastic pressure-reducing structure, which can buffer the impact of water flow, improve structural stability and reliability, and reduce sealing failure or adjustment caused by impact. The pressure-reducing structure elastically swings when the water flow recovers to adapt to the impact force, thus verifying the structural reliability.

[0030] Finally, the removal section can be easily removed after sealing. The entire process is designed to be reasonable and efficient, reducing additional construction steps and significantly solving the problem of low construction efficiency of pipe sealing between bar screens. Attached Figure Description

[0031] Figure 1 This is a schematic flowchart of the method for sealing pipes between grids provided by the present invention;

[0032] Figure 2 This is a cross-sectional schematic diagram showing the connection between the inlet pipe and the outlet pipe provided by the present invention;

[0033] Figure 3 This is a schematic diagram of the connection between the main beam and the secondary beam provided by the present invention;

[0034] Figure 4 This is a simplified schematic diagram of the reinforcing strip provided by the present invention;

[0035] Figure 5 This is a cross-sectional schematic diagram of the pressure-reducing structure provided by the present invention;

[0036] In the diagram: inlet pipe 100, manhole 101, outlet pipe 102, water passage section 103, dismantling section 104, sealing structure 105;

[0037] Main beam 200, secondary beam 201, hollow area 202, sealing plate 203, main rear side 204, main front side 205, reinforcing strip 206, side strip 207.

[0038] Water-facing surface 300, elastic column 301, fixed end 302, free end 303, recessed area 304, outer wall 305, rotating shaft 306, transverse shaft 307. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0040] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0041] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0042] Reference Figure 1-5 The image shown is a preferred embodiment of the present invention.

[0043] The construction method for sealing pipes between bar screens includes the following steps:

[0044] 1) A manhole 101 is opened on the inlet pipe 100, the manhole 101 is connected to the interior of the inlet pipe 100, and a flange is arranged in the manhole 101; the inlet pipe 100 is connected to the bar screen, and the inlet pipe 100 is connected to the outlet pipe 102. The outlet pipe 102 includes a water passage section 103 connected to the bar screen reaction tank and a dismantling section 104 connected to the ozone contact tank. The inlet pipe 100 is connected to the water passage section 103, and a sealing position is provided between the water passage section 103 and the dismantling section 104.

[0045] 2) Stop the water supply from the inlet pipe 100 and drain the water from the inlet pipe 100 and outlet pipe 102 through the manhole 101;

[0046] 3) Multiple longitudinally arranged main beams 200 are arranged at the sealing position. The multiple main beams 200 are spaced apart along the width direction of the sealing position. The ends of the main beams 200 are fixedly connected to the inner sidewall of the sealing position to form a longitudinal connection position.

[0047] 4) Multiple transversely arranged secondary beams 201 are arranged at the sealing position. The multiple secondary beams 201 are arranged at intervals along the height direction of the sealing position. The ends of the secondary beams 201 are fixedly connected to the inner sidewall of the sealing position to form a transverse connection position. The secondary beams 201 are cross-connected with the main beams 200 to form a cross connection position.

[0048] Multiple main beams 200 and multiple secondary beams 201 divide the sealing position into multiple hollow areas 202, and the multiple hollow areas 202 are arranged in an array.

[0049] 5) Multiple sealing plates 203 are arranged at the sealing position. The sealing plates 203 are fixedly connected to the secondary beams 201 and the main beams 200 respectively. The multiple sealing plates 203 are arranged in an array to close multiple hollow positions. The multiple main beams 200, multiple secondary beams 201 and multiple sealing plates 203 form a sealing structure 105. The sealing structure 105 isolates the water passage section 103 from the demolition section 104.

[0050] The sealing plate 203 has a water-facing surface 300 facing the water passage section 103. The water-facing surface 300 has a center position in the middle. Along the direction from the outer periphery of the sealing plate 203 to the center position, the water-facing surface 300 protrudes conically towards the water passage section 103 to form a conical shape. The water-facing surface 300 is provided with an elastically deformable pressure-relieving structure.

[0051] 6) Restore water intake to the inlet pipe 100. The water flow in the inlet pipe 100 flows to the water passage section 103. The pressure-reducing structure elastically swings under the impact of the water flow, buffering the impact pressure of the water flow on the sealing plate 203.

[0052] 7) Remove and process section 104.

[0053] The above-mentioned method for sealing pipes between bar screens has the following advantages:

[0054] First, a manhole 101 is opened on the water inlet pipe 100 and a flange is installed to facilitate construction personnel to quickly enter the pipeline and reduce the time required to set up temporary passages.

[0055] Secondly, the main beam 200 and the secondary beam 201 are arranged in an array to form a hollow area 202, which optimizes the layout of the sealing structure 105, reduces weight, makes the sealing plate 203 easier to install, and shortens the construction time.

[0056] Furthermore, the sealing plate 203 with its water-facing surface 300 is a conical protrusion equipped with an elastic pressure-reducing structure, which can buffer the impact of water flow, improve the stability and reliability of the structure, and reduce sealing failure or adjustment caused by impact. The pressure-reducing structure elastically swings when the water flow recovers to adapt to the impact force and verify the reliability of the structure.

[0057] Finally, the removal section 104 can be easily removed after sealing. The entire process is designed to be reasonable and efficient, reducing additional construction steps and significantly solving the problem of low construction efficiency of pipe sealing between grids.

[0058] In this embodiment, in construction step 2), after the water in the inlet pipe 100 and outlet pipe 102 is drained, the dimensions of the sealing position are measured.

[0059] In actual construction, if the dimensions of the sealing position are not measured accurately, the subsequent installation of the main beam 200 and the secondary beam 201 may result in mismatch. This will not only lead to unstable installation, but may also cause structural deformation due to uneven local stress. Through accurate measurement, construction personnel can customize or adjust the spacing and length of the main beam 200 and the secondary beam 201 according to the actual dimensions of the sealing position, thereby ensuring the smooth progress of the installation process, reducing rework or adjustments caused by dimensional errors, and indirectly improving construction efficiency.

[0060] In this embodiment, in construction step 2), after measuring the size of the sealing position, the inner wall of the sealing position is descaled.

[0061] This process removes dirt and impurities from the inner wall, making the connection between the sealing structure 105 and the inner wall tighter and more secure. This reduces installation instability caused by uneven surfaces or deposits, and lowers the possibility of rework or adjustment. In actual construction, this treatment step can effectively avoid subsequent problems caused by unstable installation of the sealing structure 105, and provides a guarantee for the long-term stable operation of the sealing structure 105.

[0062] In this embodiment, in construction step 3), the main beam 200 has a main rear side 204 that is away from the water passage section 103 and a main front side 205 that faces the water passage section 103. The main rear side 204 is connected to a reinforcing strip 206, which wraps around the main rear side 204 and is fixedly connected to the inner wall of the sealing position.

[0063] By setting the main beam 200 to be reinforced with reinforcing strips 206 and wrapping the rear side 204 and fixing them in place, the structural strength and stability of the main beam 200 are enhanced. Under complex working conditions such as water flow impact, the main beam 200 bears a large pressure and impact force. The setting of reinforcing strips 206 provides additional support and protection for the main beam 200, enabling it to better resist external forces and reduce the risk of deformation and displacement. This not only ensures the overall stability of the sealing structure 105, but also reduces the probability of sealing failure due to damage to the main beam 200.

[0064] In this embodiment, in construction step 3), the two sides of the reinforcing strip 206 extend to the two sides of the main beam 200 respectively, and extend outward from the two sides away from the main beam 200 to form the side strip 207. The side strip 207 is fixedly connected to the inner side wall of the sealing position and is flush with the front side 205. In construction step 5), the sealing plate 203 abuts against the side strip 207 and is fixedly connected to the side strip 207.

[0065] The side strips 207 provide lateral support to the main beam 200, enhancing its stability. Simultaneously, the fixed connection between the sealing plate 203 and the side strips 207 allows the sealing plate 203 to better withstand the impact of water flow, reducing the risk of local deformation and damage. This improves the reliability and durability of the sealing structure 105. In actual construction, it also effectively reduces the frequency of repairs or replacements due to damage to the sealing structure 105, indirectly solving the problem of low construction efficiency in the grate-filled pipe sealing process.

[0066] In this embodiment, in construction step 5), the pressure-relief structure includes multiple elastic columns 301. The bottom of the elastic column 301 is fixed on the water-facing surface 300 to form a fixed end 302. The top of the elastic column 301 extends freely outward away from the water-facing surface 300 to form a free end 303. There is an elastic interval between adjacent elastic columns 301. In construction step 6), as the water flow from the inlet pipe 100 flows to the water passage section 103, the water flow impacts the multiple elastic columns 301, causing the multiple elastic columns 301 to deform elastically and buffer the impact pressure of the water flow on the sealing plate 203.

[0067] The elastic deformation of the elastic columns 301 absorbs and buffers the impact energy of the water flow, thereby reducing the impact pressure of the water flow on the sealing plate 203. In practical applications, it can significantly reduce the risk of vibration and damage to the sealing plate 203 caused by water flow impact, and improve the service life and reliability of the sealing plate 203. At the same time, the elastic spacing between the elastic columns 301 allows the water flow to be evenly distributed on the surface of the sealing plate 203, reducing the situation of excessive local impact force, thereby improving the stability and durability of the sealing structure 105.

[0068] In this embodiment, during construction step 5), the height of the elastic column 301 gradually decreases along the direction from the center to the outer periphery of the sealing plate 203, and the free ends 303 of the multiple elastic columns 301 are arranged in parallel to form the free end 303 surface.

[0069] The design of the gradually changing elastic column 301 ensures that the water flow impact force is evenly distributed across the entire surface of the sealing plate 203, avoiding damage to the sealing plate 203 caused by excessive local impact force. At the same time, the flush arrangement of the free end 303 surface also ensures the flatness of the sealing plate 203 surface, reducing the eddies and turbulence generated during water flow impact.

[0070] In this embodiment, during construction step 5), the diameter of the elastic column 301 gradually increases along the direction from the free end 303 to the fixed end 302.

[0071] In this way, the fixed end 302 of the elastic column 301 bears the main fixing force and tensile force, while the free end 303 is in direct contact with the water flow and bears the impact force of the water flow. By increasing the diameter of the elastic column 301, its compressive strength and deformation resistance can be significantly improved. Especially at the fixed end 302, it can better resist the reaction force generated by the impact force of the water flow, which directly enhances the compressive performance of the sealing structure 105.

[0072] In this embodiment, in construction step 5), a recessed area 304 is formed at the center, and an outer wall 305 is formed on the outer periphery of the recessed area 304. The recessed area 304 has a recessed opening facing the water passage section 103. A rotating shaft 306 is provided in the recessed area 304. The bottom of the rotating shaft 306 is rotatably inserted into the sealing plate 203, and the top of the rotating shaft 306 is exposed in the recessed area 304, forming a connecting end. A transverse shaft 307 is connected to the connecting end. The middle part of the transverse shaft 307 is connected to the connecting end, and the two ends of the transverse shaft 307 extend freely away from each other.

[0073] In construction step 6), as the water flows from the inlet pipe 100 to the water passage section 103, the water impacts the transverse shaft 307, which rotates back and forth to buffer the impact pressure of the water flow.

[0074] The buffer design of the recessed area 304 and the transverse shaft 307 not only significantly reduces the risk of vibration and damage to the sealing plate 203 caused by water flow impact, but also allows the flow direction and speed of the water to be adjusted by rotating the transverse shaft 307, reducing the direct impact of the water flow on the sealing plate 203. At the same time, the setting of the recessed area 304 also provides a relatively stable installation environment for the transverse shaft 307, enabling it to maintain a good movement state under water flow impact.

[0075] In this embodiment, during construction step 5), multiple notches are provided on the outer wall 305, and the multiple notches are arranged around the outer wall 305 at intervals in the circumference; during construction step 6), as the water flow from the inlet pipe 100 flows to the water passage section 103, the water flow rushes into the recessed area 304, drives the transverse shaft 307 to rotate, and the water flow in the recessed area 304 flows outward and is dispersed by the multiple notches.

[0076] The mechanism of dispersing water flow effectively reduces the destructive force of water flow on the transverse shaft 307, extending the service life of the transverse shaft 307. At the same time, the dispersed water flow also reduces the impact on the sealing plate 203, further improving the impact resistance of the sealing structure 105. This enhances the stability and reliability of the sealing structure 105 under complex water flow conditions, ensuring the long-term stable operation of the sealing structure 105.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for sealing pipes between bar screens, characterized in that, The construction steps include the following: 1) A manhole is made on the inlet pipe, the manhole is connected to the interior of the inlet pipe, and a flange is arranged in the manhole; the inlet pipe is connected to the bar screen, the inlet pipe is connected to the outlet pipe, the outlet pipe includes a water passage section connected to the bar screen reaction tank and a dismantling section connected to the ozone contact tank, the inlet pipe is connected to the water passage section, and a sealing position is provided between the water passage section and the dismantling section; 2) Stop the water supply from the inlet pipe and drain the water from the inlet and outlet pipes through the manhole; 3) Multiple longitudinally arranged main beams are arranged at intervals along the width direction of the sealing position. The ends of the main beams are fixedly connected to the inner sidewall of the sealing position to form a longitudinal connection position. 4) Multiple transversely arranged secondary beams are arranged at intervals along the height direction of the sealing position. The ends of the secondary beams are fixedly connected to the inner sidewall of the sealing position to form transverse connection positions. The secondary beams are cross-connected with the main beams to form cross connection positions. The multiple main beams and multiple secondary beams divide the sealing position into multiple hollow areas, and the multiple hollow areas are arranged in an array; 5) Multiple sealing plates are arranged at the sealing positions, and the sealing plates are fixedly connected to the secondary beams and the main beams respectively; the multiple sealing plates are arranged in an array to close the multiple hollow positions accordingly, and the multiple main beams, multiple secondary beams and multiple sealing plates form a sealing structure, which isolates the water passage section from the demolition section; The sealing plate has a water-facing surface facing the water passage section, and the water-facing surface has a center position in the middle. Along the outer periphery of the sealing plate to the center position, the water-facing surface faces the water passage section in a conical shape, forming a conical surface. The water-facing surface is provided with an elastically deformable pressure-relieving structure. 6) Restore water intake to the inlet pipe, and the water flow in the inlet pipe flows to the water passage section. The pressure-reducing structure elastically swings under the impact of the water flow to buffer the impact pressure of the water flow on the sealing plate. 7) Remove the section to be demolished.

2. The method for sealing pipes between bar screens as described in claim 1, characterized in that, In construction step 2), after the water in the inlet and outlet pipes is drained, the dimensions of the sealing position are measured.

3. The method for sealing pipes between bar screens as described in claim 1, characterized in that, In construction step 2), after measuring the dimensions of the sealing position, the inner wall of the sealing position is descaled.

4. The method for sealing pipes between grids as described in any one of claims 1-3, characterized in that, In construction step 3), the main beam has a main rear side facing away from the water passage section and a main front side facing the water passage section. The main rear side is connected to a reinforcing strip, which wraps around the main rear side and is fixedly connected to the inner wall of the sealing position.

5. The method for sealing pipes between bar screens as described in claim 4, characterized in that, In construction step 3), the two sides of the reinforcing strip extend to the two sides of the main beam respectively, and extend outward from the two sides of the main beam to form a side strip. The side strip is fixedly connected to the inner side wall of the sealing position and is flush with the front side of the main beam. In construction step 5), the sealing plate abuts against the side strip and is fixedly connected to the side strip.

6. The method for sealing pipes between grids as described in any one of claims 1-3, characterized in that, In construction step 5), the pressure-relief structure includes multiple elastic columns. The bottom of each elastic column is fixed to the water-facing surface to form a fixed end, and the top of each elastic column extends freely outward away from the water-facing surface to form a free end. There is an elastic gap between adjacent elastic columns. In construction step 6), as the water flows from the inlet pipe to the water passage section, the water impacts the multiple elastic columns, causing the multiple elastic columns to deform elastically and buffer the impact pressure of the water flow on the sealing plate.

7. The method for sealing pipes between bar screens as described in claim 6, characterized in that, In construction step 5), the height of the elastic column gradually decreases along the direction from the center position to the outer periphery of the sealing plate, and the free ends of the multiple elastic columns are arranged in parallel to form a free end face.

8. The method for sealing pipes between bar screens as described in claim 6, characterized in that, In construction step 5), the diameter of the elastic column gradually increases along the direction from the free end to the fixed end.

9. The method for sealing pipes between grids as described in any one of claims 1-3, characterized in that, In construction step 5), a recessed area is formed at the center, and an outer wall is formed around the periphery of the recessed area. The recessed area has a recessed opening facing the water passage section. A rotating shaft is provided in the recessed area. The bottom of the rotating shaft is rotatably inserted into the sealing plate, and the top of the rotating shaft is exposed in the recessed area, forming a connecting end. A transverse shaft is connected to the connecting end. The middle part of the transverse shaft is connected to the connecting end, and the two ends of the transverse shaft extend freely away from each other. In construction step 6), as the water in the inlet pipe flows into the water passage section, the water impacts the transverse shaft, and the transverse shaft rotates back and forth to buffer the impact pressure of the water flow.

10. The method for sealing pipes between bar screens as described in claim 9, characterized in that, In construction step 5), multiple notches are provided on the outer wall, and the multiple notches are arranged around the outer wall at intervals in the circumference; in construction step 6), as the water flow from the inlet pipe flows to the water passage section, the water flow rushes into the recessed area, drives the transverse axis to rotate, and the water flow in the recessed area flows outward and is dispersed by the multiple notches.

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