Special-shaped crossing tee joint for nodular cast iron heat distribution pipeline

Abstract

The utility model relates to a special-shaped crossing tee joint, in particular to a special-shaped crossing tee joint for a nodular cast iron heat distribution pipeline. Comprising a main pipeline and a branch pipeline connected with the main pipeline through an arc-shaped connecting pipe. Bearing heads are arranged at the two ends of the main pipeline and the ports of the branch pipelines; and the connecting plugs of the nodular cast iron heat distribution pipelines are in socket connection with the bearing heads. The branch pipelines are connected with the main pipeline through the arc-shaped connecting pipes, so that branches can be flexibly and conveniently formed while the pipeline layout is kept compact; compared with a traditional mode that a right-angle horizontal tee joint is combined with a plurality of pipe fittings such as straight pipe sections and elbows, the use amount of the pipe fittings is reduced, the layout of pipelines is simplified, and therefore the construction difficulty and cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a special-shaped crossing tee, in particular to a special-shaped crossing tee for ductile cast iron heat pipe. BACKGROUND

[0002] Ductile cast iron pipe is widely used in urban heat pipe network system due to its many advantages, including high strength, high ductility, excellent corrosion resistance, thin wall and light weight, strong impact resistance and convenient installation, etc. In the heat pipe network system, the ductile cast iron pipe mainly undertakes the task of heat transmission, and is responsible for efficiently transporting heat from the heat supply center to each building.

[0003] However, the laying method of the heat pipe usually requires that the supply and return water two-way pipes are laid side by side. Under such a layout, when a branch needs to be opened during the laying of the heat pipe, certain challenges will be faced. The traditional solution is to combine a straight horizontal tee with a straight pipe section, an elbow and other pipe fittings to realize the opening of the branch. However, this method not only increases the use of pipe fittings, but also requires self-anchoring connection between all pipe fittings to solve the problem of blind plate force, which undoubtedly further increases the construction difficulty on site.

[0004] Therefore, it is urgent to provide a special-shaped crossing tee for ductile cast iron heat pipe to solve the problem of difficult branch opening during heat pipe construction. SUMMARY

[0005] The utility model aims to solve the technical problem of difficult branch opening during the construction of the existing heat pipe, and provides a special-shaped crossing tee for ductile cast iron heat pipe.

[0006] To solve the above technical problems, the technical solution provided by the utility model is as follows:

[0007] A special-shaped crossing tee for ductile cast iron heat pipe, comprising a main pipe and a branch pipe connected to the main pipe through an arc-shaped connecting pipe.

[0008] Both ends of the main pipe and the port of the branch pipe are provided with a socket joint; the socket joint and the socket joint are connected in a socket connection.

[0009] Further, the socket joint is trumpet-shaped.

[0010] A ring-shaped sealing ring mounting groove is formed on the inner side wall of the socket joint, and a sealing ring is mounted in the sealing ring mounting groove.

[0011] Further, a ring-shaped sealing ring deformation filling groove is formed on the inner side wall of the socket joint and communicates with the sealing ring mounting groove.

[0012] Further, the projections of the branch pipe and the main pipe in the same plane are perpendicular to each other.

[0013] Further, the pipe diameter of the branch pipe is the same as that of the main pipe.

[0014] Further, the materials of the main pipe, the branch pipe, the arc-shaped connecting pipe and the receiving head are all nodular cast iron.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] 1. The special-shaped crossing tee for the nodular cast iron heat pipe is connected with the branch pipe and the main pipe through the arc-shaped connecting pipe, so that the branch pipe can be conveniently and flexibly opened while the pipeline layout is kept compact; compared with the traditional mode of combining multiple pipe fittings such as a straight horizontal tee and a straight pipe section and an elbow, the utility model reduces the use amount of pipe fittings, simplifies the pipeline layout and reduces the construction difficulty and cost.

[0017] 2. The special-shaped crossing tee for the nodular cast iron heat pipe is connected with the plug-in connector of the nodular cast iron heat pipe through the receiving head, the receiving head is trumpet-shaped and can be effectively connected with the plug-in connector of the nodular cast iron heat pipe; meanwhile, the annular sealing ring mounting groove and the sealing ring deformation filling groove which are connected with the annular sealing ring mounting groove on the inner wall of the receiving head can ensure that the sealing ring can be stably mounted and effectively sealed after the plug-in connector of the nodular cast iron heat pipe is inserted, thereby improving the anti-permeability and safety of the pipeline.

[0018] 3. The special-shaped crossing tee for the nodular cast iron heat pipe is characterized in that the projections of the branch pipe and the main pipe in the same plane are perpendicular to each other, which not only meets the construction specification of the heat pipe but also makes the pipeline layout more reasonable and beautiful; meanwhile, the pipe diameter of the branch pipe is the same as that of the main pipe, so that the flow and pressure of the pipeline system are stable and the heat transmission efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 1 is a structural schematic view of the utility model embodiment;

[0020] Figure 2 Fig. 2 is an internal structural schematic view of the utility model embodiment;

[0021] Figure 3 Fig. 3 is a connection structural schematic view of the plug-in connector and the receiving head in the utility model embodiment.

[0022] Explanation of reference signs: 1-main pipe, 2-arc-shaped connecting pipe, 3-branch pipe, 4-socket, 5-sealing ring installation groove, 6-sealing ring, 7-sealing ring deformation filling groove, 8-insert joint. DETAILED DESCRIPTION

[0023] The technical solutions in the utility model will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] As shown in Figure 1 and Figure 2 , a special-shaped crossing tee for ductile cast iron heat pipe, comprising a main pipe 1 and a branch pipe 3 connected with the main pipe 1 through an arc-shaped connecting pipe 2; the projection of the branch pipe 3 and the main pipe 1 in the same plane is perpendicular to each other;

[0025] Both ends of the main pipe 1 and the port of the branch pipe 3 are provided with sockets 4; as shown in Figure 3 , the insert joint 8 of the ductile cast iron heat pipe is connected with the socket 4 in a socket joint.

[0026] In order to enable the insert joint 8 of the ductile cast iron heat pipe to better realize the socket joint with the socket 4, as shown in Figure 1 and Figure 2 , the socket 4 is trumpet-shaped; in order to ensure that the insert joint 8 of the ductile cast iron heat pipe can realize effective sealing after being connected with the socket 4 in a socket joint, as shown in Figure 3 , a ring-shaped sealing ring installation groove 5 is formed on the inner side wall of the socket 4, and a sealing ring 6 is installed in the sealing ring installation groove 5, which seals and fixes the socket 4 and the insert joint 8 through the sealing ring 6.

[0027] In order to enable the sealing ring 6 to better seal the socket 4 and the insert joint 8, a ring-shaped sealing ring deformation filling groove 7 is further formed on the inner side wall of the socket 4 and communicates with the sealing ring installation groove 5.

[0028] In order to ensure the stability of the flow and pressure of the pipe system and improve the efficiency of heat transmission, the pipe diameter of the branch pipe 3 is the same as that of the main pipe 1.

[0029] In the embodiment, the materials of the main pipe 1, the branch pipe 3, the arc-shaped connecting pipe 2 and the socket 4 are all ductile cast iron.

[0030] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this, any change or replacement within the technical scope disclosed by the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A special-shaped crossing tee for ductile cast iron hot water pipes, characterized in that: It comprises a main pipeline (1), and a branch pipeline (3) connected with the main pipeline (1) through an arc-shaped connecting pipeline (2); Both ends of the main pipeline (1) and the port of the branch pipeline (3) are provided with a receiving joint (4); the plug-in joint (8) of the cast iron heat pipeline is connected with the receiving joint (4) in a socket connection.

2. The special-shaped crossing tee for ductile cast iron hot water pipes according to claim 1, characterized in that: The receiving joint (4) is trumpet-shaped. An annular sealing ring mounting groove (5) is formed on the inner side wall of the receiving joint (4), and a sealing ring (6) is mounted in the sealing ring mounting groove (5).

3. The special-shaped crossing tee for ductile iron hot water heat pipes according to claim 2, characterized in that: An annular sealing ring deformation filling groove (7) is further formed on the inner side wall of the receiving joint (4) and is communicated with the sealing ring mounting groove (5).

4. The special-shaped crossing tee for ductile iron hot water heat pipes according to claim 1, characterized in that: The projection of the branch pipeline (3) and the main pipeline (1) in the same plane is perpendicular to each other.

5. The special-shaped crossing tee for ductile iron hot water heat pipes according to claim 4, characterized in that: The pipe diameter of the branch pipeline (3) is the same as that of the main pipeline (1).

6. The special-shaped crossing tee for ductile iron hot water heat pipes according to claim 5, characterized in that: The material of the main pipeline (1), the branch pipeline (3), the arc-shaped connecting pipeline (2) and the receiving joint (4) is cast iron.

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