Pressure-resistant compensation joint

Abstract

The utility model provides a pressure-resistant compensation joint which comprises a first flange head, a round pipe section, a connecting section, a connecting pipe, a partial pressure pipe, a gland, a rubber ring and a connecting flange, the two ends of the round pipe section are fixedly connected with the first flange head and the connecting section respectively, and the tail end of the connecting section is fixedly connected with the connecting flange. The gland comprises a second flange head and a pipe body, the second flange head is fixedly connected to one end of the pipe body, the pipe body is inserted into the connecting section from the connecting flange, the rubber ring is arranged on the inner wall of the connecting section, the connecting pipe comprises a connecting pipe body and a third flange head, and the third flange head is fixedly connected to the connecting pipe body. The third flange head is fixedly connected to one end of the connecting pipe body, the connecting pipe body is inserted into the circular pipe section, the pressure dividing pipe is arranged in the connecting pipe body, the cross section of the pressure dividing pipe is a circular ring composed of a plurality of holes, and due to the structural design, the compensation connector can cope with the high-pressure environment without deformation.

Description

Technical Field

[0001] This utility model relates to the field of pipe joint technology, and in particular to a pressure-resistant compensating joint. Background Technology

[0002] In modern society, almost all houses are equipped with various piping systems such as gas pipelines and water supply pipelines. Expansion joints, as an important pipe fitting, are widely used in these piping systems. Expansion joints can withstand the axial pressure of the pipeline, and can be adjusted according to the site conditions during installation and maintenance, and also play a certain role in protecting pumps, valves and other pipeline equipment.

[0003] Currently, corrugated pipe expansion joints are often used in the market to adapt to high-pressure environments. Corrugated pipe expansion joints utilize the elastic deformation of the corrugated pipe to cope with high-pressure environments. However, many pipeline systems require a stable and robust structure, so corrugated pipe expansion joints that are prone to deformation are not suitable. Therefore, in order to address this issue, the expansion joints need to be improved. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a pressure-resistant compensation joint.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: A pressure-resistant compensating joint includes a first flange head, a circular pipe section, a connecting section, a connecting pipe, a pressure-dividing pipe, a gland, a rubber ring, and a connecting flange. The first flange head and the connecting section are fixedly connected to both ends of the circular pipe section. Both the connecting section and the circular pipe section are cylindrical pipes, and the cross-sectional area of ​​the connecting section is larger than that of the circular pipe section. The connecting flange is fixedly connected to the tail end of the connecting section. The inner wall of the connecting section is threaded. The gland includes a second flange head and a pipe body. The second flange head is fixedly connected to one end of the pipe body. The surface of the pipe body is threaded and rotates into the connecting section from the connecting flange. The rubber ring is located on the inner wall of the connecting section. One side of the rubber ring is tightly attached to the inner wall at the junction of the connecting section and the circular pipe section, and a central hole is provided to accommodate the connecting flange. The connecting pipe includes a connecting pipe body and a third flange head. The third flange head is fixedly connected to one end of the connecting pipe body. The inner wall of the connecting pipe body near the third flange head has a ring of outwardly protruding grooves. The cross-sectional area of ​​the connecting pipe body is smaller than the cross-sectional area of ​​the circular pipe segment, and when the connecting pipe body is inserted into the circular pipe segment, the surface of the connecting pipe body is in close contact with the inner wall of the circular pipe segment. The pressure-dividing pipe includes a pressure-dividing pipe body and a connecting protrusion. The pressure-dividing pipe body is located inside the connecting pipe body and its surface is in close contact with the inner wall of the connecting pipe body. The cross-section of the pressure-dividing pipe body is a ring composed of regular hexagonal holes, and the regular hexagonal holes are staggered along the direction of the pressure-dividing pipe body. The connecting protrusion is fixedly connected to the surface of the pressure-dividing pipe body at a position corresponding to the groove. The connecting protrusion matches the groove and is inserted into it.

[0006] Preferably, the connecting pipe body is inserted from the second flange head to a position near the first flange head inside the circular pipe section, so that the connecting pipe, the first flange head, the circular pipe section, and the connecting section can jointly bear the internal pressure. The distance between the connecting section and the connecting pipe body is exactly the same as the thickness of the pipe body of the gland, so the outer surface of the connecting pipe body is in close contact with the inner wall of the gland.

[0007] Preferably, the length of the pipe body is greater than the length of the connecting section but less than the length of the pressure-dividing pipe body. This allows the second flange head to be fixed only between the connecting flange and the third flange head. The length of the pressure-dividing pipe is the same as the length of the connecting pipe, so that the outer surface of the pressure-dividing pipe is in close contact with the inner wall of the connecting pipe, which facilitates the pressure-dividing pipe to withstand pressure.

[0008] Preferably, the connecting flange, the first flange head, the second flange head, and the third flange head are all flanges of the same model, which facilitates connection and fixation using special screws.

[0009] Preferably, the first flange head, the circular pipe section, the connecting section, the connecting pipe, the pressure dividing pipe, the gland, and the connecting flange are all made of polybutene material, which improves the compensating joint's resistance to high temperature and high pressure as well as its corrosion resistance.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the pipe wall made of regular hexagonal holes allows the pressure and high temperature of the pressure-distributing pipe to be evenly distributed. The staggered arrangement of regular hexagonal holes reduces the weakening of the pipe wall in one direction by the holes. This design not only retains the pressure-distributing capacity but also ensures the integrity of the pressure-distributing pipe structure and improves the compensating joint's ability to withstand high temperature and high pressure. Attached Figure Description

[0011] Figure 1 This is a front view of the pressure-resistant compensation connector of this utility model;

[0012] Figure 2 This is a cross-sectional view of the pressure-resistant compensation joint of this utility model;

[0013] Figure 3 This is a cross-sectional view of the pressure-dividing pipe of the pressure-resistant compensation joint of this utility model. Detailed Implementation

[0014] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Figure 1 As shown, a pressure-resistant compensating joint includes a first flange head 110, a circular pipe section 120, a connecting section 130, a connecting pipe 2, a pressure-dividing pipe 3, a gland 4, a rubber ring 5, and a connecting flange 6. The first flange head 110 and the connecting section 130 are fixedly connected to both ends of the circular pipe section 120, respectively. Both the connecting section 130 and the circular pipe section 120 are cylindrical pipes, and the cross-sectional area of ​​the connecting section 130 is larger than that of the circular pipe section 120. The connecting flange 6 is fixedly connected to the tail end of the connecting section 130. The gland 4 includes a second flange head 41. The connecting pipe 420 and the pipe body 420 are connected together. The inner wall of the connecting section 130 is threaded. The second flange head 410 is fixedly connected to one end of the pipe body 420. The surface of the pipe body 420 is threaded to cooperate with the thread on the inner wall of the connecting section 130 so that the pipe body 420 can be rotated into the connecting section 130. The connecting pipe 2 includes a connecting pipe body 210 and a third flange head 220. The third flange head 220 is fixedly connected to one end of the connecting pipe body 210. The connecting pipe body 210 is inserted into the pressure cap 4 from the second flange head 410.

[0015] like Figure 2As shown, the rubber ring 5 is disposed on the inner wall of the connecting section 130. One side of the rubber ring 5 is tightly attached to the inner wall at the junction of the connecting section 130 and the circular pipe section 120, and the center of the rubber ring 5 has a hole just enough for the connecting pipe 2 to pass through. The rubber ring 5 enhances the sealing of the compensation joint. The inner wall of the connecting pipe body 210 near the third flange head 220 has a ring of outwardly protruding groove 211. The connecting pipe body 210 is inserted from the second flange head 410 until it reaches the position in the circular pipe section 120 near the first flange head 110, so that the connecting pipe 2, the first flange head 110, the circular pipe section 120, and the connecting section 130 can jointly withstand the internal pressure. The connecting section 130 and the connecting pipe body 210 The distance between them is exactly the same as the thickness of the tube body 420 of the pressure cap 4, so the outer surface of the connecting tube body 210 is in close contact with the inner wall of the pressure cap 4; the pressure dividing tube 3 includes a pressure dividing tube body 310 and a connecting protrusion 320. The pressure dividing tube body 310 is located inside the connecting tube body 210. The length of the pressure dividing tube body 310 is equal to the length of the connecting tube 2, so that the surface of the pressure dividing tube 3 is in close contact with the inner wall of the connecting tube body 210, thereby better bearing the pressure inside the tube through multiple tube walls. The connecting protrusion 320 is fixedly connected to the position of the surface of the pressure dividing tube body 310 corresponding to the groove 211. The connecting protrusion 320 matches the groove 211 and is inserted into it, thereby fixing the pressure dividing tube 3 inside the connecting tube 2.

[0016] like Figure 3 As shown, the cross-section of the pressure-distributing tube body 310 is a ring composed of regular hexagonal holes, and the regular hexagonal holes are staggered along the direction of the pressure-distributing tube body 310. The regular hexagonal holes have the ability to disperse pressure and heat. The staggered arrangement reduces the weakening of the tube wall in one direction by the holes and ensures the integrity of the tube structure of the pressure-distributing tube 3. The connecting protrusion 320 is a solid structure and is fixedly connected to the surface of the pressure-distributing tube body 310 in a circle, which allows the pressure-distributing tube 3 to be better fixed in the connecting tube 2.

[0017] In use, align the holes of the connecting flange 6 and the second flange head 410 and fix them together with special screws. Align the first flange head 110 and the third flange head 220 with the flange holes at both ends of the pipeline installation and fix them together with special screws. When the compensating joint is in use, the pressure-distributing pipe 3, with its staggered hexagonal hole design, evenly distributes all the stress and high temperature on the inner wall of the pipe. In addition, the multi-layered pipe wall allows the compensating joint to withstand the high pressure environment without deformation.

[0018] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pressure-resistant compensating joint, comprising a first flange head, a circular pipe section, a connecting section, a connecting pipe, a pressure-dividing pipe, a gland, a rubber ring, and a connecting flange, characterized in that: The first flange and the connecting section are fixedly connected to both ends of the circular pipe section, respectively. Both the connecting section and the circular pipe section are cylindrical pipes, and the cross-sectional area of ​​the connecting section is larger than that of the circular pipe section. The connecting flange is fixedly connected to the tail end of the connecting section, and the inner wall of the connecting section is threaded. The gland includes a second flange and a pipe body. The second flange is fixedly connected to one end of the pipe body. The surface of the pipe body is threaded and rotates into the connecting section from the connecting flange. The rubber ring is located on the inner wall of the connecting section. One side of the rubber ring is tightly attached to the inner wall at the junction of the connecting section and the circular pipe section, and a hole is provided in the center for the connecting pipe to pass through. The connecting pipe includes a connecting pipe body and a third flange. The third flange is fixedly connected to the connecting flange. Connected to one end of the connecting pipe body, the inner wall of the connecting pipe body near the third flange head has a ring of outwardly protruding grooves. The cross-sectional area of ​​the connecting pipe body is smaller than the cross-sectional area of ​​the circular pipe segment, and when the connecting pipe body is inserted into the circular pipe segment, the surface of the connecting pipe body is in close contact with the inner wall of the circular pipe segment. The pressure-dividing pipe includes a pressure-dividing pipe body and a connecting protrusion. The pressure-dividing pipe body is located inside the connecting pipe body and its surface is in close contact with the inner wall of the connecting pipe body. The cross-section of the pressure-dividing pipe body is a ring composed of regular hexagonal holes, and the regular hexagonal holes are staggered along the direction of the pressure-dividing pipe body. The connecting protrusion is fixedly connected to the position on the surface of the pressure-dividing pipe body corresponding to the groove. The connecting protrusion matches the groove and is inserted into it.

2. The pressure-resistant compensating joint as described in claim 1, characterized in that: The connecting pipe body is inserted from the second flange head until it reaches a position inside the circular pipe section near the first flange head. The distance between the connecting section and the connecting pipe body is exactly the same as the thickness of the cap.

3. The pressure-resistant compensating joint as described in claim 1, characterized in that: The length of the pipe body is greater than the length of the connecting section but less than the length of the connecting pipe body, and the length of the pressure dividing pipe is the same as the length of the connecting pipe.

4. The pressure-resistant compensating joint as described in claim 1, characterized in that: The connecting flange, the first flange head, the second flange head, and the third flange head are all flanges of the same model.

5. The pressure-resistant compensating joint as described in claim 1, characterized in that: The first flange head, the circular pipe section, the connecting section, the connecting pipe, the pressure dividing pipe, the gland, and the connecting flange are all made of polybutene material.

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