A four-way inspection chamber

Abstract

The utility model discloses a four -way inspection well, including the main pipe and two cross and with the branch of main pipe intercommunication, and the branch both ends all have the pipe mouth, and each branch is crossed and is divided into two pipe sections, and the first reinforcing rib of the pipe mouth transverse deformation can be hindered is established between the adjacent pipe section of intersection, and the second reinforcing rib of the pipe mouth external expansion can be hindered is established in the root joint of adjacent pipe section of intersection. The utility model can control the longitudinal tensile and transverse extrusion of the branch mouth through the setting reasonable reinforcing structure, restrains the deformation trend in the bearing process of inspection well, and then improves the bearing capacity of inspection well.

Description

Technical Field

[0001] This utility model relates to the field of water supply and drainage facilities technology, and more specifically, it relates to a four-way inspection well. Background Technology

[0002] Inspection wells, as drainage ancillary structures in urban underground infrastructure, are required to withstand high loads. Various materials can be used to construct inspection wells, with plastic being one of them. Plastic inspection wells offer advantages such as low cost, convenient installation, and lightweight construction. However, due to the low strength of plastic, they suffer from drawbacks such as low strength and susceptibility to damage. Most existing large-port plastic inspection wells cannot withstand the loads required by national standards for their corresponding dimensions, leading to significant safety hazards during regular inspections. Load-bearing tests on plastic four-way inspection wells revealed that excessively large port sizes resulted in reduced well wall thickness, leading to longitudinal tension and lateral compression during port deformation. Therefore, improving the structure of plastic four-way inspection wells to enhance their load-bearing capacity is a pressing issue. Patent CN103074932A discloses an injection-molded sewage pipe fitting inspection well. This invention can improve the strength and force transmission of the 360° force-bearing platform on the inner wall end face of the vertical pipe connection port of the inspection well. The outer wall of the socket of the vertical pipe connection port and the horizontal pipe connection port is fully reinforced with protruding reinforcing ribs, which improves the overall strength. However, this invention cannot solve the problem of longitudinal tension and lateral compression of the support port when subjected to load deformation. Utility Model Content

[0003] Existing plastic four-way inspection wells exhibit longitudinal stretching and lateral compression of the support joints when deformed under load. To overcome this defect, this utility model provides a four-way inspection well that can effectively reduce the deformation of the inspection well, especially by controlling the longitudinal stretching and lateral compression of the support joints, thereby greatly improving the load-bearing capacity of the inspection well.

[0004] The technical solution of this utility model is as follows: a four-way inspection well includes a main pipe and two intersecting branch pipes connected to the main pipe. Each branch pipe has an opening at both ends. The intersecting portion of each branch pipe is divided into two sections. A first reinforcing rib is provided between the intersecting adjacent sections to prevent lateral deformation of the openings. A second reinforcing rib is provided at the root junction of the intersecting adjacent sections to prevent outward expansion of the openings. The load-bearing function of the four-way inspection well is borne by the main pipe. During load-bearing, the deformation of the two branch pipes mainly manifests as outward expansion at the root of the openings and lateral compression of the openings. To reduce this deformation of the branch pipe openings, the first reinforcing rib adds a tensile force laterally to the branch pipe openings to prevent lateral compression deformation. The second reinforcing rib is used to prevent outward expansion deformation at the root of the openings and to improve the stress concentration problem at the root of the openings. By setting the first and second reinforcing ribs, the load-bearing capacity of the four-way inspection well can be significantly improved.

[0005] Preferably, a third reinforcing rib is also provided at the root joint of intersecting adjacent pipe sections to enhance the second reinforcing rib. During load-bearing, the well wall of a large branch manhole provides little support. By adding a third reinforcing rib to each branch, the load-bearing function of the well wall can be replaced. Simultaneously, during load-bearing, the third reinforcing rib can also fix the second reinforcing rib, preventing deformation of the second reinforcing rib due to deformation at the root of the branch pipe.

[0006] Preferably, a fourth reinforcing rib is provided on the outer wall of the pipe section, which extends axially and can prevent axial tension of the pipe opening. When the four-way inspection well deforms, in addition to lateral compression deformation, the branch pipe opening also experiences longitudinal tensile deformation. The fourth reinforcing rib can prevent the longitudinal tensile deformation of the branch pipe opening, reducing the adverse deformation effect of the longitudinal tensile deformation of the branch pipe opening on the overall inspection well.

[0007] Preferably, there are at least three fourth reinforcing ribs, evenly distributed circumferentially on the circumferential surface of the pipe opening. Having at least three fourth reinforcing ribs evenly distributed circumferentially ensures that the pipe opening resists axial tensile forces uniformly in the circumferential direction. This arrangement ensures that regardless of the direction of the axial tensile force, the pipe opening has corresponding reinforcing ribs to resist it, preventing premature damage due to stress concentration in a localized area. By uniformly distributing stress, the axial load-bearing capacity and stability of the pipe opening are further improved, ensuring the reliability of the overall manhole structure under complex stress conditions.

[0008] Preferably, the main pipe is installed vertically, with an open socket at the top and a closed structure at the bottom. This vertical installation and open socket at the top facilitate connection to the drainage pipe above. The socket design also ensures a tighter pipe connection.

[0009] Preferably, a fourth reinforcing rib is provided on the outer wall of the socket to prevent inward shrinkage. A fifth reinforcing rib is also provided at the socket to further prevent inward shrinkage. When connecting to the upper water supply and drainage pipes, the socket is subjected to various forces, including the weight of the pipes themselves, the impact of water flow, and external pressure, which can easily cause inward shrinkage and deformation, affecting the sealing and stability of the connection. The fifth reinforcing rib increases the structural strength of the socket, resisting these external forces that cause inward shrinkage, ensuring that the socket always maintains a good shape, maintains a tight connection with the upper pipes, prevents sewage leakage and drainage problems caused by socket deformation, and ensures the normal operation of the water supply and drainage system.

[0010] Preferably, the main pipe and branch pipes are integrally molded. This integral molding eliminates the connection gaps between the main and branch pipes, making the inspection well a single, unified structure. This structural design significantly improves the overall strength of the inspection well and reduces the possibility of damage caused by stress concentration at the connection. Simultaneously, the integral molding method greatly enhances the sealing performance at the connection between the main and branch pipes, effectively preventing sewage leakage at this point, improving the reliability and durability of the drainage system, and reducing maintenance costs.

[0011] As a preferred option, the two branch pipes intersect in a cross shape. This cross-shaped branch pipe structure makes the manhole more efficient in terms of space utilization, adaptable to different terrains and water supply and drainage needs, and enhances the versatility and practicality of the manhole in water supply and drainage systems.

[0012] The beneficial effects of this utility model are:

[0013] This invention effectively reduces deformation of plastic four-way inspection wells and improves their load-bearing capacity. By setting up a reasonable reinforcing structure to control the longitudinal tension and lateral compression of the support joints, it suppresses the deformation trend during the load-bearing process of the inspection well, thereby improving its load-bearing capacity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of one structure of the present utility model.

[0015] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0016] In the diagram, 1-first reinforcing rib, 2-second reinforcing rib, 3-third reinforcing rib, 4-fourth reinforcing rib, 5-fifth reinforcing rib, 6-reinforcing rib group, 7-pipe opening, 8-main pipe, 9-branch pipe, 10-socket, 11-pipe section. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] Example 1:

[0019] like Figure 1 , 2As shown, a four-way inspection well is used in the drainage system of an urban residential community. This four-way inspection well includes a main pipe 8 and two branch pipes 9, which intersect to form a cross shape. The main pipe 8 passes through the intersection of the two branch pipes 9, and has no outer wall at the intersection, allowing the main pipe 8 to communicate with the two branch pipes 9. The two branch pipes 9 are located in a horizontal plane, while the main pipe 8 is vertical, perpendicular to both branch pipes 9. The top of the main pipe 8 is an open socket 10, and the bottom of the main pipe 8 is a closed structure with a recessed portion containing a grid-like reinforcing rib group 6. The branch pipes 9 are continuous at both ends and each has a pipe opening 7. Each branch pipe 9 is divided into two pipe segments 11 by the intersection, with a total of four segments 11, and adjacent segments forming a 90° angle. Between the intersecting adjacent pipe segments 11, specifically between adjacent pipe openings of the branch pipes 9, a first reinforcing rib 1 is provided. The first reinforcing rib 1 is an arc-shaped plate with a central angle of 90°. Each first reinforcing rib 1 prevents lateral deformation of the pipe opening 7. The first reinforcing rib 1 is integrally formed with the branch pipe 9. A second reinforcing rib 2 is provided at the root joint of intersecting adjacent pipe sections 11, which prevents the pipe opening 7 from expanding outward. The second reinforcing rib 2 is integrally formed with the main pipe 8 and the branch pipe 9. A third reinforcing rib 3 is also provided at the root joint of intersecting adjacent pipe sections 11. The third reinforcing rib 3 reinforces the second reinforcing rib 2. The third reinforcing rib 3 is triangular and integrally formed with the second reinforcing rib 2, the main pipe 8, and the branch pipe 9. The third reinforcing rib 3 is located on the upper and lower sides of the second reinforcing rib 2, and both of the third reinforcing rib 3 are within the axial section of the main pipe 8. A fourth reinforcing rib 4 is provided on the outer wall of the pipe section 11. The fourth reinforcing rib 4 extends axially and can effectively resist the tensile force of the pipe section 11 in the axial direction, preventing the pipe opening 7 from being damaged due to longitudinal tension. There are three fourth reinforcing ribs 4, which are evenly distributed circumferentially around the circumference of the pipe section 11. The outer wall of the socket 10 is provided with a fifth reinforcing rib 5, which is a ring structure and can prevent the socket 10 from shrinking inward.

[0020] In the drainage system of urban residential communities, sewage flows into the socket 10 of the four-way inspection well through the drainage pipe above, and then enters the main pipe 8. Because the main pipe 8 and branch pipe 9 are integrally formed and have a reasonable reinforcing structure, the impact force generated by the sewage during flow can be effectively dispersed and withstood. When encountering heavy rainfall or other situations that increase the drainage flow, the water pressure in the main pipe 8 and branch pipe 9 will increase accordingly. At this time, the first reinforcing rib 1 can limit the lateral deformation of the pipe opening 7, preventing excessive expansion or contraction of the pipe opening 7 in the lateral direction due to water pressure, ensuring the stability of the connection between the branch pipe 9 and other pipes. The second reinforcing rib 2 and the third reinforcing rib 3 work together to effectively prevent the outward expansion of the root of the pipe opening 7, ensuring that the overall structure of the branch pipe 9 will not be damaged due to excessive force at the root. The fourth reinforcing rib 4 on the outer wall of the pipe opening 7 resists the axial tensile force generated by water flow impact and pressure changes, preventing the pipe opening 7 from being stretched or torn in the axial direction. The fourth reinforcing rib 5 at the socket 10 can withstand the connection force between the pipes and the pressure generated by the water flow impact when connecting the upper drainage pipe, preventing the socket 10 from shrinking inward, ensuring the sealing of the connection and avoiding sewage leakage.

[0021] Example 2:

[0022] A four-way inspection well is applied to the drainage system of urban residential communities. This four-way inspection well includes a main pipe 8 and two branch pipes 9, which intersect in a cross shape. The main pipe 8 passes through the intersection of the two branch pipes 9, and has no outer wall at the intersection, allowing communication between the main pipe 8 and the two branch pipes 9. The two branch pipes 9 are located in a horizontal plane, while the main pipe 8 is vertical, perpendicular to both branch pipes 9. The top of the main pipe 8 is an open socket 10, and the bottom of the main pipe 8 is a closed structure with a recessed portion containing a grid-like reinforcing rib group 6. The branch pipes 9 are continuous at both ends and each has a pipe opening 7. Each branch pipe 9 is divided into two pipe segments 11 by the intersection, with four segments in total, and adjacent segments forming a 90° angle. A first reinforcing rib 1, which is an arc-shaped plate, is provided between the intersecting adjacent pipe segments 11, specifically between adjacent pipe openings of the branch pipes 9. Each first reinforcing rib 1 prevents lateral deformation of the pipe opening 7. The first reinforcing rib 1 is integrally formed with the branch pipe 9. A second reinforcing rib 2 is provided at the root junction of intersecting adjacent pipe sections 11, preventing the pipe opening 7 from expanding outwards. The second reinforcing rib 2 is integrally formed with the main pipe 8 and the branch pipe 9. A third reinforcing rib 3 is also provided at the root junction of intersecting adjacent pipe sections 11, reinforcing the second reinforcing rib 2. The third reinforcing rib 3 is triangular and integrally formed with the second reinforcing rib 2, the main pipe 8, and the branch pipe 9. The third reinforcing rib 3 is located on the upper and lower sides of the second reinforcing rib 2, and is within the axial section of the main pipe 8. A fourth reinforcing rib 4 is provided on the outer wall of the pipe section 11, extending axially. The fourth reinforcing rib 4 effectively resists the axial tensile force of the pipe section 11, preventing damage to the pipe opening 7 due to longitudinal tension. Unlike Embodiment 1, in this embodiment, there are four fourth reinforcing ribs 4, evenly distributed circumferentially on the circumferential surface of the pipe section 11. A fifth reinforcing rib 5 is provided on the outer wall of the socket 10, having an annular structure, preventing the socket 10 from contracting inwards. The rest is the same as in Example 1.

[0023] In the drainage system of urban residential communities, sewage flows into the socket 10 of the four-way inspection well through the drainage pipe above, and then enters the main pipe 8. Because the main pipe 8 and branch pipe 9 are integrally formed and have a reasonable reinforcing structure, the impact force generated by the sewage during flow can be effectively dispersed and withstood. When encountering heavy rainfall or other situations that increase the drainage flow, the water pressure in the main pipe 8 and branch pipe 9 will increase accordingly. At this time, the first reinforcing rib 1 can limit the lateral deformation of the pipe opening 7, preventing excessive expansion or contraction of the pipe opening 7 in the lateral direction due to water pressure, ensuring the stability of the connection between the branch pipe 9 and other pipes. The second reinforcing rib 2 and the third reinforcing rib 3 work together to effectively prevent the outward expansion of the root of the pipe opening 7, ensuring that the overall structure of the branch pipe 9 will not be damaged due to excessive force at the root. The fourth reinforcing rib 4 on the outer wall of the pipe opening 7 resists the axial tensile force generated by water flow impact and pressure changes, preventing the pipe opening 7 from being stretched or torn in the axial direction. The fourth reinforcing rib 5 at the socket 10 can withstand the connection force between the pipes and the pressure generated by the water flow impact when connecting the upper drainage pipe, preventing the socket 10 from shrinking inward, ensuring the sealing of the connection and avoiding sewage leakage.

[0024] Example 3:

[0025] A four-way inspection well is applied to the drainage system of urban residential communities. This four-way inspection well includes a main pipe 8 and two branch pipes 9, which intersect in a cross shape. The main pipe 8 passes through the intersection of the two branch pipes 9, and has no outer wall at the intersection, allowing communication between the main pipe 8 and the two branch pipes 9. The two branch pipes 9 are located in a horizontal plane, while the main pipe 8 is vertical, perpendicular to both branch pipes 9. The top of the main pipe 8 is an open socket 10, and the bottom of the main pipe 8 is a closed structure with a recessed portion containing a grid-like reinforcing rib group 6. The branch pipes 9 are continuous at both ends and each has a pipe opening 7. Each branch pipe 9 is divided into two pipe segments 11 by the intersection, with four segments in total, and adjacent segments forming a 90° angle. A first reinforcing rib 1, which is an arc-shaped plate, is provided between the intersecting adjacent pipe segments 11, specifically between adjacent pipe openings of the branch pipes 9. Each first reinforcing rib 1 prevents lateral deformation of the pipe opening 7. The first reinforcing rib 1 is integrally formed with the branch pipe 9. A second reinforcing rib 2 is provided at the root junction of intersecting adjacent pipe sections 11, preventing the pipe opening 7 from expanding outwards. The second reinforcing rib 2 is integrally formed with the main pipe 8 and the branch pipe 9. A third reinforcing rib 3 is also provided at the root junction of intersecting adjacent pipe sections 11, reinforcing the second reinforcing rib 2. The third reinforcing rib 3 is triangular and integrally formed with the second reinforcing rib 2, the main pipe 8, and the branch pipe 9. The third reinforcing rib 3 is located on the upper and lower sides of the second reinforcing rib 2, and is within the axial section of the main pipe 8. A fourth reinforcing rib 4 is provided on the outer wall of the pipe section 11, extending axially. The fourth reinforcing rib 4 effectively resists the axial tensile force of the pipe section 11, preventing damage to the pipe opening 7 due to longitudinal tension. Unlike Embodiment 1, in this embodiment, there are six fourth reinforcing ribs 4, evenly distributed circumferentially on the circumferential surface of the pipe section 11. A fifth reinforcing rib 5 is provided on the outer wall of the socket 10, having an annular structure, preventing the socket 10 from contracting inwards. The rest is the same as in Example 1.

[0026] In the drainage system of urban residential communities, sewage flows into the socket 10 of the four-way inspection well through the drainage pipe above, and then enters the main pipe 8. Because the main pipe 8 and branch pipe 9 are integrally formed and have a reasonable reinforcing structure, the impact force generated by the sewage during flow can be effectively dispersed and withstood. When encountering heavy rainfall or other situations that increase the drainage flow, the water pressure in the main pipe 8 and branch pipe 9 will increase accordingly. At this time, the first reinforcing rib 1 can limit the lateral deformation of the pipe opening 7, preventing excessive expansion or contraction of the pipe opening 7 in the lateral direction due to water pressure, ensuring the stability of the connection between the branch pipe 9 and other pipes. The second reinforcing rib 2 and the third reinforcing rib 3 work together to effectively prevent the outward expansion of the root of the pipe opening 7, ensuring that the overall structure of the branch pipe 9 will not be damaged due to excessive force at the root. The fourth reinforcing rib 4 on the outer wall of the pipe opening 7 resists the axial tensile force generated by water flow impact and pressure changes, preventing the pipe opening 7 from being stretched or torn in the axial direction. The fourth reinforcing rib 5 at the socket 10 can withstand the connection force between the pipes and the pressure generated by the water flow impact when connecting the upper drainage pipe, preventing the socket 10 from shrinking inward, ensuring the sealing of the connection and avoiding sewage leakage.

[0027] Example 4:

[0028] A four-way inspection well is disclosed for use in the drainage system of urban residential communities. This four-way inspection well includes a main pipe 8 and two branch pipes 9, which intersect in a cross shape. The main pipe 8 passes through the intersection of the two branch pipes 9, and has no outer wall at the intersection, allowing communication between the main pipe 8 and the two branch pipes 9. The two branch pipes 9 are located in a horizontal plane, while the main pipe 8 is vertical, perpendicular to both branch pipes 9. The top of the main pipe 8 is an open socket 10, and the bottom of the main pipe 8 is a closed structure with a recess containing a grid-like reinforcing rib group 6. The branch pipes 9 are continuous at both ends and each has a pipe opening 7. Each branch pipe 9 is divided into two pipe segments 11 by the intersection, resulting in four pipe segments 11, with adjacent segments forming a 90° angle. Between intersecting adjacent pipe segments 11, specifically between adjacent pipe openings of branch pipe 9, a first reinforcing rib 1 is provided. Unlike embodiment 1, in this embodiment, the first reinforcing rib 1 is a fan-shaped plate with a central angle of 90°. Each first reinforcing rib 1 can prevent lateral deformation of the pipe opening 7. The first reinforcing rib 1 is integrally formed with the branch pipe 9. A second reinforcing rib 2 is provided at the root junction of intersecting adjacent pipe segments 11. The second reinforcing rib 2 can prevent the pipe opening 7 from expanding outward. The second reinforcing rib 2 is integrally formed with the main pipe 8 and the branch pipe 9. A third reinforcing rib 3 is also provided at the root junction of intersecting adjacent pipe segments 11. The third reinforcing rib 3 can reinforce the second reinforcing rib 2. The third reinforcing rib 3 is triangular and integrally formed with the second reinforcing rib 2, the main pipe 8, and the branch pipe 9. The third reinforcing rib 3 is located on the upper and lower sides of the second reinforcing rib 2, and the third reinforcing rib 3 is within the axial section of the main pipe 8. A fourth reinforcing rib 4 is provided on the outer wall of pipe section 11. The fourth reinforcing rib 4 extends axially and can effectively resist the tensile force of pipe section 11 in the axial direction, preventing damage to pipe end 7 due to longitudinal tension. There are three fourth reinforcing ribs 4, which are evenly distributed circumferentially around the circumference of pipe section 11. A fifth reinforcing rib 5 is provided on the outer wall of socket 10. The fifth reinforcing rib 5 has a ring structure and can prevent socket 10 from shrinking inward. The rest is the same as in embodiment 1.

[0029] In the drainage system of urban residential communities, sewage flows into the socket 10 of the four-way inspection well through the drainage pipe above, and then enters the main pipe 8. Because the main pipe 8 and branch pipe 9 are integrally formed and have a reasonable reinforcing structure, the impact force generated by the sewage during flow can be effectively dispersed and withstood. When encountering heavy rainfall or other situations that increase the drainage flow, the water pressure in the main pipe 8 and branch pipe 9 will increase accordingly. At this time, the first reinforcing rib 1 can limit the lateral deformation of the pipe opening 7, preventing excessive expansion or contraction of the pipe opening 7 in the lateral direction due to water pressure, ensuring the stability of the connection between the branch pipe 9 and other pipes. The second reinforcing rib 2 and the third reinforcing rib 3 work together to effectively prevent the outward expansion of the root of the pipe opening 7, ensuring that the overall structure of the branch pipe 9 will not be damaged due to excessive force at the root. The fourth reinforcing rib 4 on the outer wall of the pipe opening 7 resists the axial tensile force generated by water flow impact and pressure changes, preventing the pipe opening 7 from being stretched or torn in the axial direction. The fourth reinforcing rib 5 at the socket 10 can withstand the connection force between the pipes and the pressure generated by the water flow impact when connecting the upper drainage pipe, preventing the socket 10 from shrinking inward, ensuring the sealing of the connection and avoiding sewage leakage.

Claims

1. A four-way inspection shaft comprising a main pipe (8) and two branch pipes (9) intersecting and communicating with the main pipe (8), the branch pipes (9) each having a pipe opening (7) at both ends, each branch pipe (9) being divided into two pipe sections (11) by an intersection portion, characterized in that, The branch pipe (9) is provided with a first reinforcing rib (1) between adjacent pipe openings to prevent the pipe opening (7) from lateral deformation, and the root joint of the intersecting adjacent pipe sections (11) is provided with a second reinforcing rib (2) to prevent the pipe opening (7) from expanding outward.

2. The four-way manhole of claim 1, wherein, The root joint of the intersecting adjacent pipe sections (11) is also provided with a third reinforcing rib (3) that can strengthen the second reinforcing rib (2).

3. The four-way manhole of claim 2, wherein, The outer wall of the pipe section (11) is provided with a fourth reinforcing rib (4) that extends axially and can prevent the axial stretching of the pipe section (11).

4. The four-way manhole of claim 1, wherein, The fourth reinforcing rib (4) consists of at least three ribs and is evenly distributed circumferentially on the periphery of the pipe section (11).

5. The four-way manhole of claim 1, wherein, The main pipe (8) is set vertically, with an open socket (10) at the top and a closed structure at the bottom.

6. The four-way manhole of claim 5, wherein, The outer wall of the socket (10) is provided with a fifth reinforcing rib (5) to prevent the socket (10) from shrinking inward.

7. The four-way manhole of any one of claims 1 to 6, wherein, The main pipe (8) and the branch pipe (9) are formed as one piece.

8. The four-way manhole of any one of claims 1 to 6, wherein, The two branch pipes (9) intersect to form a cross shape.

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