PCCP pipeline system and assembling method

Abstract

The PCCP system comprises a socket pipeline and a spigot pipeline which are sequentially connected, a spigot pipe annular plate is arranged at the end of the spigot pipeline, a socket pipe annular plate is arranged at the end of the socket pipeline, the end of the spigot pipeline is inserted into the socket pipeline, and the periphery of the spigot pipeline is sleeved with a rubber sealing ring used for being sealed with the socket pipeline. A water conveying steel cylinder and an annular rubber sealing ring are arranged at the end of the spigot pipeline in the axial direction, the water conveying steel cylinder is used for reducing impact of liquid in a pipeline system on the spigot pipe annular plate, the annular rubber sealing ring is used for sealing the joint of the spigot pipe annular plate and the socket pipeline, and an annular steel plate is further arranged on the periphery of the spigot pipeline. The annular steel plate is fixedly connected with the bell mouth pipe annular plate through a screw B; a telescopic spring clamping block is arranged in the socket pipeline and used for being matched with the spigot pipeline to achieve limiting. The problems that when two traditional PCCP pipe connectors are connected, pipe openings are damaged, and integrity and sealing performance are insufficient after combination are solved.

Description

Technical Field

[0001] This invention relates to the field of prestressed concrete cylinder pipe technology, and particularly to a PCCP pipeline system and assembly method. Background Technology

[0002] Prestressed concrete cylinder pipe (PCCP) is a key pipe material in modern water conservancy projects and municipal pipe network construction. It features a composite structure of high-strength steel cylinder and prestressed steel wire, combining the durability of concrete with the tensile strength of steel. It plays a vital role in inter-basin water transfer projects, industrial circulating water transportation, and urban water supply systems.

[0003] However, existing pipe connections generally use a socket-and-spipe joint method. This process requires high construction precision, necessitating strict control over the installation direction of the pipe socket and spigot, and relying on heavy-duty hoisting equipment to assist in the insertion operation. In complex terrain or confined construction spaces, limited mechanical operation increases the difficulty of aligning the pipe axis, easily causing collision damage to the edges of the socket and spigot, reducing the structural integrity of the pipe. Furthermore, existing sealing technologies rely solely on the compression deformation of the rubber sealing ring and the friction between the pipe materials to achieve water stoppage. For example, a PCCP pipe socket-and-spipe sealing device with patent number CN118602192A has a generally poor sealing effect and a short service life. During long-term operation, factors such as water flow impact and foundation settlement can cause the sealing ring to age and shift, leading to sealing failure at the pipe connection and potential leakage. Summary of the Invention

[0004] The purpose of this invention is to provide a prestressed steel cylinder concrete pipe, which solves the problems of the existing sealing methods having a generally poor sealing effect, short service life, and the fact that during long-term operation, the sealing ring is prone to aging and displacement due to factors such as water flow impact and foundation settlement, resulting in the failure of the sealing at the pipe section connection and the potential for leakage.

[0005] This invention is implemented as follows: This invention provides a PCCP piping system, comprising a socket pipe and a spigot pipe connected in sequence, wherein the spigot pipe has a spigot pipe annular plate at its end, and the socket pipe has a socket pipe annular plate at its end.

[0006] The spigot end is inserted into the socket pipe and is fitted with a rubber sealing ring for sealing with the socket pipe. The spigot end is provided with a water-carrying steel cylinder and an annular rubber sealing ring along the axial direction. The water-carrying steel cylinder is used to reduce the impact of liquid in the pipeline system on the annular plate of the spigot pipe. The annular rubber sealing ring is used to seal the connection between the annular plate of the spigot pipe and the socket pipe. The spigot pipe is also provided with an annular steel plate on its outer periphery. The annular steel plate is fastened to the annular plate of the socket pipe by screw B. The socket pipe is provided with a retractable spring clip for cooperating with the spigot pipe to achieve limit.

[0007] This invention is used to fix two pipe sections after the socket pipe and spigot pipe are connected. The design of the water conveying steel cylinder, the annular rubber sealing ring, the rubber sealing ring and the annular steel plate can ensure the integrity and sealing of the two pipe sections during installation. This invention solves the problems of pipe joint damage caused by the connection of two traditional PCCP pipes and insufficient integrity and sealing after the connection.

[0008] A further technical solution of the present invention is: the inner wall of the socket pipe is provided with an annular groove A, the annular plate of the spigot pipe and the spigot pipe are provided with an annular groove B, and a spring block that can be extended and retracted radially along the socket pipe into the annular groove B is provided in the annular groove A.

[0009] A further technical solution of the present invention is: the outer periphery of the spigot pipe is provided with an annular steel plate groove, the annular steel plate is placed in the annular steel plate groove, and the annular plate of the socket pipe is provided with a threaded groove A for connecting with screw B.

[0010] A further technical solution of the present invention is: the inner wall of the socket pipe is provided with a rubber sealing ring groove A, the outer periphery of the spigot pipe is provided with a rubber sealing ring groove B, and the rubber sealing ring is placed between the rubber sealing ring groove A and the rubber sealing ring groove B.

[0011] A further technical solution of the present invention is that the annular groove B, the rubber sealing ring groove B, and the annular steel plate groove are arranged sequentially along the axial direction of the insertion pipe.

[0012] A further technical solution of the present invention is: the water conveying steel cylinder is an annular structure, the water conveying steel cylinder includes a steel cylinder bottom and a fixed cylinder, the fixed cylinder is connected to the inner wall of the steel cylinder bottom and extends axially, the outer diameter of the steel cylinder bottom is the same as the outer diameter of the annular plate of the spigot pipe, and the fixed cylinder can extend into the spigot pipe and be fixed to the spigot pipe.

[0013] A further technical solution of the present invention is: the water conveying steel cylinder further includes a steel cylinder sealing ring and a positioning hole A. The steel cylinder sealing ring is placed at the bottom end of the steel cylinder for sealing with the inner wall of the spigot pipe. The positioning hole A is opened on the fixed cylinder. A threaded groove B is opened on the inner wall of the spigot pipe. The fixed cylinder can be inserted into the spigot pipe and is fastened by a screw A passing through the positioning hole A and the threaded groove B.

[0014] A further technical solution of the present invention is: the annular rubber sealing ring includes a rubber base and an annular thick base, the rubber base and the annular thick base are coaxial and the diameter is smaller than that of the annular thick base, the inner diameter of the annular thick base is equal to the outer diameter of the annular plate of the socket pipe, and the outer diameter of the annular thick base is equal to the inner diameter of the socket pipe.

[0015] A further technical solution of the present invention is: the annular steel plate is a structure of two semi-circular rings, the annular steel plate is provided with positioning holes B, and the screw B passes through the positioning holes B and is fastened to the annular plate of the socket tube.

[0016] The present invention also provides a method for assembling a PCCP piping system, characterized in that: the piping system includes the aforementioned piping system, and the method includes the following steps:

[0017] S1. Place the socket pipe, put the rubber sealing ring on the corresponding positions before and after the socket pipe, and then push the spigot pipe into the socket pipe until the rubber sealing ring is locked into the corresponding position of the spigot pipe. The spring clips limit the movement of the spigot pipe and the socket pipe.

[0018] S2. Install the water-carrying steel cylinder on the spigot pipe along the axial direction of the spigot pipe, and then fix it. Fit the annular rubber sealing ring with the water-carrying steel cylinder along the axial direction of the spigot pipe to achieve a seal between the end of the spigot pipe and the socket pipe.

[0019] S3. Place the annular steel plate around the outer circumference of the spigot pipe and fasten it to the annular plate of the socket pipe by passing screw B through the annular steel plate.

[0020] S4. Installation steps S1-S3 are used to install spigot and socket pipes to the required length, completing the piping system installation.

[0021] The beneficial effects of this invention are as follows: First, by modifying the traditional PCCP pipe, this invention cleverly utilizes the extensibility of the spring clip during installation to ensure the integrity and stability of the connection between the two pipe sections. Second, the rubber sealing ring, annular rubber sealing ring, water conveying steel cylinder, and annular steel plate designed in this invention enhance the sealing and corrosion resistance between pipe sections after installation, thereby increasing the service life. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the socket pipe structure disclosed in this invention;

[0023] Figure 2 This is a front view of the socket pipe structure disclosed in this invention;

[0024] Figure 3 This is a schematic diagram of the spigot pipe structure disclosed in this invention;

[0025] Figure 4 This is a left view of the spigot pipe disclosed in this invention;

[0026] Figure 5 This is a schematic diagram of the rubber sealing ring disclosed in this invention;

[0027] Figure 6 This is a schematic diagram of the annular rubber sealing ring disclosed in this invention;

[0028] Figure 7 This is a schematic diagram of the water conveying steel cylinder disclosed in this invention;

[0029] Figure 8 This is a schematic diagram of the annular steel plate disclosed in this invention;

[0030] Figure 9 This is an exploded view of a PCCP piping system disclosed in this invention.

[0031] Reference numerals in the attached diagram: 1-Annular plate of socket tube; 2-Threaded groove A; 3-Annular groove A; 4-Rubber sealing ring groove A; 5-Spring block; 6-Annular steel plate groove; 7-Rubber sealing ring groove B; 8-Annular plate of spigot tube; 9-Threaded groove B; 10-Annular groove B; 11-Rubber sealing ring; 12-Rubber base; 13-Annular thick base; 14-Steel cylinder sealing ring; 15-Positioning hole A; 16-Fixing cylinder; 17-Steel cylinder bottom; 18-Screw A; 19-Positioning hole B; 20-Screw B. Detailed Implementation

[0032] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0033] Example 1:

[0034] like Figure 1-9 The illustrated PCCP piping system includes a socket pipe and a spigot pipe connected in sequence. The spigot pipe has a spigot pipe annular plate 8 at its end, and the socket pipe has a socket pipe annular plate 1 at its end.

[0035] The end of the spigot pipe is inserted into the socket pipe and is fitted with a rubber sealing ring 11 for sealing with the socket pipe. The end of the spigot pipe is provided with a water supply steel cylinder and an annular rubber sealing ring along the axial direction. The water supply steel cylinder is used to reduce the impact of liquid in the pipeline system on the annular plate 8 of the spigot pipe. The annular rubber sealing ring is used to seal the connection between the annular plate 8 of the spigot pipe and the socket pipe. The outer periphery of the spigot pipe is also provided with an annular steel plate, which is fastened to the annular plate 1 of the socket pipe by screw B20. The socket pipe is provided with a retractable spring clip 5 for cooperating with the spigot pipe to achieve limit.

[0036] This invention is used to fix two pipe sections after the socket pipe and spigot pipe are connected. The design of the water conveying steel cylinder, the annular rubber sealing ring, the rubber sealing ring and the annular steel plate can ensure the integrity and sealing of the two pipe sections during installation. This invention solves the problems of pipe joint damage caused by the connection of two traditional PCCP pipes and insufficient integrity and sealing after the connection.

[0037] In this embodiment, the rubber sealing ring 11 has a circular cross-sectional shape. The material can be EPDM rubber or silicone rubber.

[0038] In this embodiment, the cross-sectional shape of the socket pipe annular plate 1 is circular, with its outer diameter being equal to the outer diameter of the socket pipe and its inner diameter being the same as the outer diameter of the spigot pipe annular plate 8. The socket pipe annular plate 1 is located at the front and rear pipe ends of the socket pipe, and it is part of the socket pipe, being integrally cast with the prestressed steel cylinder inside the socket pipe.

[0039] In this embodiment, the annular plate 8 of the spigot pipe is located at the front and rear ends of the spigot pipe. The cross-sectional shape of the annular plate 8 is circular, with the outer diameter of the annular plate being equal to the inner diameter of the socket pipe, and the inner diameter being equal to the inner diameter of the spigot pipe. The annular plate 8 of the spigot pipe is located at the front and rear ends of the spigot pipe and is part of the spigot pipe. After the two pipe sections are connected, the annular rubber sealing ring 11 can be fitted onto the annular plate 8 of the socket pipe.

[0040] In this embodiment, the inner wall of the socket pipe is provided with an annular groove A3, and the annular plate 1 of the spigot pipe and the spigot pipe are provided with an annular groove B10. The annular groove A3 is provided with a spring block 5 that can be extended and retracted radially along the socket pipe into the annular groove B10.

[0041] In this embodiment, the annular groove A3 is a hollow cylinder A at the front and rear pipe openings of the socket pipe, located at the front and rear pipe openings, close to the rubber sealing ring groove A4. Specifically, the rubber sealing ring groove A4 is on the outside, and the outer annular groove A3 is on the inside.

[0042] In this embodiment, the hollow cylinder A has a circular cross-section, and the outer diameter of the ring is the sum of the inner diameter of the annular plate 1 of the socket pipe and the vertical height of the spring block 5. The height of the hollow cylinder A is the thickness of the spring block 5.

[0043] In this embodiment, the vertical height of the spring block 5 in the stretched state is the spring length in the stretched state plus the height of the arc-shaped block. The vertical height in the stretched state is greater than the sum of the difference between the inner and outer diameters of the hollow cylinder A and the difference between the inner and outer diameters of the hollow cylinder B. This means that in the stretched state, the arc-shaped block can reach the insertion pipe to fix the two pipe sections.

[0044] In this embodiment, the spring latch 5 consists of an arc-shaped latch and a spring, located in the annular groove A3. The vertical height specifically refers to the sum of the height of the arc-shaped latch and the height of the spring when the spring is in the contracted state. The vertical height is less than the difference between the inner and outer diameters of the hollow cylindrical ring A. The button for controlling the extension and retraction of the spring is located outside the annular plate 1 of the socket tube.

[0045] In this embodiment, the cross-section of the arc-shaped locking block is a fan-shaped ring, and the height of the arc-shaped locking block is the difference between the inner and outer diameters of the fan-shaped ring. The inner diameter of the fan-shaped ring is equal to the outer diameter of the disc-shaped structure formed by the annular groove B10 in the spigot pipe, so that after the socket pipe and the spigot pipe are connected, the arc-shaped locking block can fit more closely to the spigot pipe to achieve a fixing effect.

[0046] In this embodiment, the spring is a compression spring, which is in a compressed state before the two pipe sections are connected and in a stretched state after the connection. In the stretched state, the arc-shaped locking block will fit tightly against the spigot pipe. The spring is made of silicon manganese steel to ensure sufficient elastic limit and durability.

[0047] In this embodiment, the annular groove B10 is a hollow cylinder B with a circular cross-section. The height of the hollow cylinder B is equal to the height of the cylinder presented by the annular groove A3 and the thickness of the arc-shaped block, so that the spring block 5 can fit tightly against the insertion pipe in the stretched state.

[0048] In this embodiment, the outer periphery of the spigot pipe is provided with an annular steel plate groove 6, the annular steel plate is placed in the annular steel plate groove 6, and the annular plate 1 of the socket pipe is provided with a threaded groove A2 for connecting with the screw B20.

[0049] In this embodiment, the threaded groove A2 is located on the annular plate 1 of the socket tube, and the annular steel plate can be fixed here with screw B20 during installation.

[0050] In this embodiment, the inner wall of the socket pipe is provided with a rubber sealing ring groove A4, the outer periphery of the spigot pipe is provided with a rubber sealing ring groove B7, and the rubber sealing ring 11 is placed between the rubber sealing ring groove A4 and the rubber sealing ring groove B7.

[0051] In this embodiment, the rubber sealing ring groove A4 is located at the front and rear pipe openings of the socket pipe, and its geometric shape is circular, with a diameter consistent with that of the rubber sealing ring 11 used during installation.

[0052] In this embodiment, the annular groove B10, the rubber sealing ring groove B7, and the annular steel plate groove 6 are arranged sequentially along the axial direction of the insertion pipe.

[0053] In this embodiment, the rubber sealing ring groove B7 is located at the front and rear ends of the spigot pipe, adjacent to the annular groove B10. Specifically, the annular groove B10 is on the outer side, and the rubber sealing ring groove B7 is on the inner side. The rubber sealing ring groove B7 has a circular shape, and its diameter is the same as that of the rubber sealing ring 11 used during installation.

[0054] In this embodiment, the annular steel plate groove 6 is close to the rubber sealing ring groove B7, specifically, the rubber sealing ring groove B7 is on the outside and the annular steel plate groove 6 is on the inside, so that the annular steel plate can be fixed in the groove during installation.

[0055] In this embodiment, the water conveying steel cylinder has an annular structure. The water conveying steel cylinder includes a steel cylinder bottom 17 and a fixed cylinder 16. The fixed cylinder 16 is connected to the inner wall of the steel cylinder bottom 17 and extends axially. The outer diameter of the steel cylinder bottom 17 is the same as the outer diameter of the annular plate 8 of the spigot pipe. The fixed cylinder 16 can extend into the spigot pipe and be fixed to the spigot pipe.

[0056] In this embodiment, the water conveying steel cylinder also includes a steel cylinder sealing ring 14 and a positioning hole A15. The steel cylinder sealing ring 14 is placed at the end of the bottom 17 of the steel cylinder for sealing with the inner wall of the spigot pipe. The positioning hole A15 is opened on the fixed cylinder 16. A threaded groove B9 is opened on the inner wall of the spigot pipe. The fixed cylinder 16 can be inserted into the spigot pipe and is fastened by a screw A18 passing through the positioning hole A15 and the threaded groove B9.

[0057] In this embodiment, the threaded groove B9 is located on the inner side of the pipe at the front and rear pipe openings, with one set of threaded grooves at each pipe opening. During installation, the water supply steel cylinder can be fixed with screw A18.

[0058] In this embodiment, the steel cylinder bottom 17, the fixed cylinder 16, and the positioning hole A15 are integrally cast, and the steel cylinder sealing ring 14 is placed on the steel cylinder bottom 17. The water conveying steel cylinder is made of stainless steel.

[0059] In this embodiment, the steel cylinder sealing ring has a circular cross-section. When subjected to compression from the socket pipe, the diameter of the steel cylinder sealing ring is the same as the inner diameter of the socket pipe for sealing. The material of the steel cylinder sealing ring can be EPDM rubber or silicone rubber.

[0060] In this embodiment, the bottom of the steel cylinder 17 is a hollow cylinder with a circular cross-section. The outer diameter of the circular ring of the bottom of the steel cylinder 17 is the same as the inner diameter of the socket pipe, and the inner diameter is the same as the inner diameter of the spigot pipe.

[0061] In this embodiment, the fixing cylinder 16 is a hollow cylinder with a circular cross-section. The outer diameter of the circular ring of the fixing cylinder 16 is the same as the inner diameter of the socket pipe, and the difference between the inner and outer diameters is the thickness of the fixing cylinder 16. The positioning holes A15 are evenly distributed around the fixing cylinder 16, which can be used to fix the water supply steel cylinder in the spigot pipe, thus playing a role in corrosion prevention and sealing.

[0062] In this embodiment, the water conveying steel cylinder consists of a steel cylinder sealing ring 14, a positioning hole A15, a steel cylinder bottom 17, and a fixing cylinder 16. The steel cylinder bottom 17 has a circular cross-section, and its outer diameter is the same as the outer diameter of the annular plate 8 of the spigot pipe. After the water conveying steel cylinder is installed, it can provide protection for the annular plate 8 of the spigot pipe, preventing it from being impacted by the pipeline liquid and improving its service life. At the same time, the presence of the steel cylinder sealing ring 14 improves the corrosion resistance of the steel cylinder bottom 17.

[0063] In this embodiment, the annular rubber sealing ring includes a rubber base 12 and an annular thick base 13. The rubber base 12 and the annular thick base 13 are coaxial and the diameter of the annular thick base 13 is smaller than that of the annular thick base 13. The inner diameter of the annular thick base 13 is equal to the outer diameter of the annular plate 8 of the socket pipe, and the outer diameter of the annular thick base 13 is equal to the inner diameter of the socket pipe.

[0064] In this embodiment, the annular rubber sealing ring is composed of a rubber base 12 and an annular thick base 13, and its material can be EPDM rubber or silicone rubber, which plays a sealing role.

[0065] In this embodiment, the rubber base 12 is a hollow cylinder with a circular cross-section. The outer diameter of the circular ring of the rubber base 12 is the same as the outer diameter of the circular ring of the socket pipe annular plate 8, so that it can be fitted onto the socket pipe annular plate 8. The inner diameter of the circular ring of the rubber base 13 is the same as the inner diameter of the socket pipe, so as not to affect the flow of liquid in the pipe.

[0066] In this embodiment, the annular thick base 13 is a hollow cylinder with a circular cross-section. The inner diameter of the annular thick base 13 is the same as the outer diameter of the annular plate 8 of the spigot pipe, and the outer diameter of the annular thick base 13 is the same as the inner diameter of the socket pipe. This is intended to ensure the sealing of the cavity formed by the elastic locking block 5 after the two pipe sections are connected. The height of the hollow cylinder of the annular thick base 13 is the same as the height of the hollow cylinder of the annular plate 8 of the spigot pipe. Therefore, the annular rubber sealing ring can be fitted onto the annular plate 8 of the spigot pipe, preventing the annular thick base 13 from covering the position of the rubber sealing ring groove B7 after it is installed in the spigot pipe.

[0067] In this embodiment, the annular steel plate is a structure of two semi-circular rings. The annular steel plate is provided with positioning holes B19. The screw B20 passes through the positioning holes B19 and is fastened to the annular plate 1 of the socket tube.

[0068] In this embodiment, the annular steel plates are in a set of two, each with positioning holes B19. The cross-section of the annular steel plate is a semi-circular ring. It can be first clamped onto the spigot pipe body through the annular steel plate groove 6, and then connected to the socket pipe through the threaded groove B9 and screw B20, so as to prevent corrosion of the rubber sealing ring after the two pipe sections are connected.

[0069] To achieve the above objectives, this invention provides a PCCP piping system, which consists of a socket pipe and a spigot pipe. The socket pipe is composed of a rubber sealing ring groove A4, an annular groove A3, a spring clip 5, an annular plate 1, and a threaded groove A2. The spigot pipe is composed of a rubber sealing ring groove B7, an annular groove B10, an annular plate 8, a threaded groove B9, and an annular steel plate groove 6. The spring clip is located in the annular groove A and is used to fix the two pipe sections after the socket pipe and spigot pipe are connected. Furthermore, the design includes a rubber sealing ring, an annular rubber sealing ring, a water-carrying steel cylinder, an annular steel plate, screw A, and screw B, which ensure the integrity and sealing of the two pipe sections during installation.

[0070] Optionally, the number of thread grooves A and B can be increased or decreased according to the actual engineering situation.

[0071] Optionally, a washer may be added between the groove and the screw when screw A is screwed into thread groove A and screw B is screwed into thread groove B. The washer may be made of rubber, stainless steel or high carbon steel.

[0072] Example 2:

[0073] A method for assembling a PCCP piping system, characterized in that: the piping system includes the piping system described in Embodiment 1, and the method includes the following steps:

[0074] S1. Place the socket pipe, put the rubber sealing ring 11 on the corresponding positions before and after the socket pipe, and then push the spigot pipe into the socket pipe until the rubber sealing ring 11 is locked into the corresponding position of the spigot pipe. The spring block 5 is used to limit the spigot pipe and the socket pipe.

[0075] S2. Install the water-carrying steel cylinder on the spigot pipe along the axial direction of the spigot pipe, and then fix it. Fit the annular rubber sealing ring with the water-carrying steel cylinder along the axial direction of the spigot pipe to achieve a seal between the end of the spigot pipe and the socket pipe.

[0076] S3. The annular steel plate is fitted around the outer circumference of the spigot pipe and the screw B20 is passed through the annular steel plate and fastened to the annular plate 1 of the socket pipe.

[0077] S4. Installation steps S1-S3 are used to install spigot and socket pipes to the required length, completing the piping system installation.

[0078] In this embodiment, the socket pipe is placed first, followed by the rubber sealing ring 11 being fitted onto the rubber sealing ring grooves A4 at the front and rear ends of the socket pipe. Then, the spigot pipe is pushed into the socket pipe until the rubber sealing ring 11 is engaged in the rubber sealing ring groove B7 of the spigot pipe. At this point, the annular groove A3 of the socket pipe and the annular groove B10 of the spigot pipe are aligned. A technician then enters from inside the pipe and removes the lever used to compress the spring, causing the spring of the spring clip 5 to change from a compressed state to a stretched state. The arc-shaped clip of the spring clip 5 moves from the annular groove A3 into the annular groove B10 and abuts against the spigot pipe. At this point, the socket pipe and the spigot pipe are fixed in place by the action of the spring clip 5, facilitating the next connection step.

[0079] In this embodiment, a technician enters the two connected pipe sections from one side of the pipeline and places the annular rubber sealing ring on the annular plate 8 of the spigot pipe. At this time, the cavity formed by the annular groove A3 of the socket pipe and the annular groove B10 of the spigot pipe becomes a sealed space under the action of the annular rubber sealing ring, so that the spring block 5 is not corroded by the liquid flowing in the pipeline.

[0080] In this embodiment, a technician pushes the water-carrying steel cylinder into the spigot pipe with the fixed cylinder 16 in front. The fixed cylinder 16 is fully pushed into the spigot pipe, at which point the positioning hole A15 on the fixed cylinder is aligned with the threaded groove B9 inside the spigot pipe. Then, the matching screw B18 is passed through the positioning hole A15 and screwed into the threaded groove B9, completing the installation of the water-carrying steel cylinder.

[0081] In this embodiment, the annular steel plate is fixed to the annular steel plate groove 6 of the spigot pipe, so that the positioning hole B19 is aligned with the threaded groove A2 of the socket pipe. Then, the matching screw A20 is passed through the positioning hole B19 and screwed into the threaded groove A2 to complete the installation of the annular steel plate.

[0082] Then, connect the socket pipe and spigot pipe according to the above steps. During this process, install the rubber sealing ring, annular rubber seal, water supply steel cylinder, and annular steel plate to complete the connection of the entire pipeline.

[0083] 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 PCCP pipe system comprising a bell and spigot pipe connected in sequence, characterized in that: The socket pipe end is provided with a socket pipe annular plate (8), the socket pipe end is provided with a socket pipe annular plate (1), The socket pipe end is inserted into the socket pipe and is provided with a rubber sealing ring (11) for sealing with the socket pipe, the socket pipe end is provided with a water conveying steel cylinder and an annular rubber sealing ring along the axial direction, the water conveying steel cylinder is used for reducing the impact of liquid in the pipe system on the socket pipe annular plate (8), the annular rubber sealing ring is used for sealing the connection between the socket pipe annular plate (8) and the socket pipe, the outer periphery of the socket pipe is further provided with an annular steel plate, the annular steel plate is tightly connected with the socket pipe annular plate (1) through a screw B (20); The socket pipe is provided with a telescopic spring block (5) for limiting with the socket pipe.

2. A PCCP pipe system as claimed in claim 1, wherein: The inner wall of the socket pipe is provided with an annular clamping groove A (3), the socket pipe annular plate (1) and the socket pipe are provided with an annular clamping groove B (10), the annular clamping groove A (3) is provided with a spring block (5) which can be telescoped into the annular clamping groove B (10) along the radial direction of the socket pipe.

3. A PCCP pipe system as claimed in claim 2, wherein: The outer periphery of the socket pipe is provided with an annular steel plate groove (6), the annular steel plate is arranged in the annular steel plate groove (6), the socket pipe annular plate (1) is provided with a threaded groove A (2) for connecting with the screw B (20).

4. A PCCP pipe system as claimed in claim 3, wherein: The inner wall of the socket pipe is provided with a rubber sealing ring groove A (4), the outer periphery of the socket pipe is provided with a rubber sealing ring groove B (7), the rubber sealing ring (11) is arranged between the rubber sealing ring groove A (4) and the rubber sealing ring groove B (7).

5. A PCCP pipe system as claimed in claim 4, wherein: The annular clamping groove B (10), the rubber sealing ring groove B (7) and the annular steel plate groove (6) are sequentially arranged along the axial direction of the socket pipe.

6. A PCCP pipe system according to any one of claims 1 to 5, characterized in that: The water conveying steel cylinder is in an annular structure, the water conveying steel cylinder comprises a steel cylinder bottom (17) and a fixing cylinder (16), the fixing cylinder (16) is connected with the inner wall of the steel cylinder bottom (17) and extends along the axial direction, the outer diameter of the steel cylinder bottom (17) is the same as the outer diameter of the socket pipe annular plate (8), the fixing cylinder (16) can be inserted into the socket pipe and fixed with the socket pipe.

7. A PCCP pipe system as claimed in claim 6, wherein: The water conveying steel cylinder further comprises a steel cylinder sealing ring (14) and a positioning hole A (15), the steel cylinder sealing ring (14) is arranged at the end of the steel cylinder bottom (17) for sealing with the inner wall of the socket pipe, the positioning hole A (15) is arranged on the fixing cylinder (16), the inner wall of the socket pipe is provided with a threaded groove B (9), the fixing cylinder (16) can be inserted into the socket pipe and fastened through the screw A (18) passing through the positioning hole A (15) and the threaded groove B (9).

8. A PCCP pipe system as claimed in any one of claims 1 to 5, wherein: The annular rubber sealing ring comprises a rubber bottom disc (12) and an annular thick bottom (13), the rubber bottom disc (12) is coaxial with the annular thick bottom (13) and has a smaller diameter than the annular thick bottom (13), the inner diameter of the annular thick bottom (13) is equal to the outer diameter of the socket pipe annular plate (8), and the outer diameter of the annular thick bottom (13) is equal to the inner diameter of the socket pipe.

9. A PCCP pipe system as claimed in any one of claims 1 to 5, wherein: The annular steel plate is a two half circular ring structure, the annular steel plate is provided with a positioning hole B (19), and the screw B (20) is fastened and connected with the socket pipe annular plate (1) through the positioning hole B (19).

10. A method of assembling a PCCP pipe system, characterized by: The pipe system comprises the pipe system according to any one of claims 1-9, and the method comprises the following steps: S1, placing the socket pipe, sleeving the rubber sealing ring (11) at the corresponding positions in front of and behind the socket pipe, then pushing the spigot pipe into the socket pipe until the rubber sealing ring (11) is clamped into the corresponding position of the spigot pipe, and limiting the spigot pipe and the socket pipe through the spring clamping block (5); S2, installing the water conveying steel cylinder on the spigot pipe in the axial direction, then fixing, and abutting the annular rubber sealing ring with the water conveying steel cylinder in the axial direction of the spigot pipe, so as to realize the sealing between the end portions of the socket pipe and the spigot pipe; S3, sleeving the annular steel plate on the outer periphery of the spigot pipe and fastening and connecting the annular steel plate with the socket pipe annular plate (1) through the screw B (20); S4, installing the spigot pipe and the socket pipe through steps S1-S3 until the required length, and completing the installation of the pipe system.

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