CN204785171U - Flange formula connecting device of compound tubular product of wire net skeleton polyethylene - Google Patents

Abstract

The utility model is a flange-type connection device for polyethylene composite pipes with a steel mesh skeleton. The front pipeline connection port and the rear pipeline connection port are respectively sleeved with flanges, and the gasket is placed between the front pipeline connection port and the rear pipeline connection port, between the front pipeline connection port and the gasket, and between the rear pipeline connection port and the gasket. The electric fusion pipe fittings are respectively socketed between them, and the flanges respectively socketed on the front pipeline connection port and the rear pipeline connection port are fixedly connected by bolts and nuts. When in use, first connect the fixed connection flanges on the front pipeline connection port and the rear pipeline connection port respectively, then respectively socket the electric fusion pipe fittings on the front pipeline connection port and the rear pipeline connection port, and carry out hot-melt connection respectively, and then in Add a gasket between the front pipeline connection port and the rear pipeline connection port, and finally connect the flange with bolts and nuts.

Description

Flange connection device for polyethylene composite pipe with steel mesh skeleton

technical field

The utility model relates to the field of pipelines, which is a flange connection device for polyethylene composite pipes with a steel mesh skeleton.

Background technique

Pipeline transportation is a long-distance transport method of transporting liquid and gas materials using pipelines as a means of transportation. Transportation has the advantages of less energy consumption, low cost and good benefits. Steel mesh skeleton plastic composite pipe is an improved new steel mesh skeleton plastic composite pipe. This new type of pipe is made of high-strength steel mesh skeleton and thermoplastic material polyethylene, and steel wire winding mesh is used as the skeleton reinforcement of polyethylene plastic pipe. The body uses high-density polyethylene as the matrix, and uses high-performance adhesive resin to tightly connect the steel wire skeleton with the inner and outer layers of high-density polyethylene, so that it has an excellent composite effect. Therefore, this composite pipe overcomes the respective shortcomings of the steel pipe and the plastic pipe, and maintains the respective advantages of the steel pipe and the plastic pipe.

Steel mesh skeleton plastic composite pipe adopts high-quality materials and advanced production technology to make it have higher pressure resistance. At the same time, the composite pipe has excellent flexibility and is suitable for long-distance buried water supply and gas pipelines system. Steel mesh frame plastic composite pipes are connected by electrofusion pipe fittings. When connecting, the inner heating element of the electrofusion pipe fittings is used to melt the outer layer plastic of the pipe material and the inner layer plastic of the pipe fittings, so as to reliably connect the pipe materials and pipe fittings together.

The installation of pipelines is affected by the field operation environment. It is difficult for the connection between adjacent pipelines to reach the level and concentricity required by the construction standard. There is prestress at the adjacent pipeline connection. As shown in Figure 1, when the pipeline is fused, the adjacent pipeline connection is fused with the internal material of the pipe fitting, the binding force is reduced, and the prestress is released, causing the interface to be out of center. There will be eccentricity at the place, resulting in one side not being welded and leaking, as shown in Figure 2.

Contents of the invention

The technical problem solved by the utility model is: to provide a flange-type connection device for steel mesh skeleton polyethylene composite pipes, which constrains the adjacent pipelines horizontally and concentrically with the mechanical structure, and bears the connection between the electric fusion pipe fittings and the adjacent pipelines. The prestress existing at the place ensures that the adjacent pipeline connection port is concentric with the electrofusion pipe fittings after hot-melt connection, ensuring the connection quality of the pipeline.

The technical scheme adopted by the utility model to solve the technical problem is: a flange-type connection device for steel wire mesh skeleton polyethylene composite pipe, which is characterized in that it includes a front pipeline connection port, a rear pipeline connection port, a flange, a gasket, Electrofusion pipe fittings, bolts and nuts, the front pipeline connection port and the rear pipeline connection port are respectively sleeved with flanges, the gasket is placed between the front pipeline connection port and the rear pipeline connection port, and the front pipeline connection port and the gasket The electric fusion pipe fittings are respectively sleeved between the middle and rear pipeline connection ports and the gasket, and the flanges respectively socketed on the front pipeline connection port and the rear pipeline connection port are fixedly connected by bolts and nuts.

The washer is a rubber washer.

The flange connection device of the steel mesh frame polyethylene composite pipe of the utility model, the electric fusion pipe fittings respectively socketed on the front pipeline connection port and the rear pipeline connection port can ensure the concentricity of the pipeline connection port and the electric fusion pipe fitting after hot-melt connection, The flanges respectively socketed on the front pipeline connection port and the rear pipeline connection port can withstand the prestress existing between the electrofusion pipe fittings and the adjacent pipeline connection port, and the bolts and nuts are used to secure the connection between the front pipeline connection port and the rear pipeline connection port. The flange can ensure the level and concentricity of the front pipeline connection port and the rear pipeline connection port with the mechanical structure, and the gasket can effectively seal the adjacent pipeline connection port. When in use, first connect the fixed connection flanges on the front pipeline connection port and the rear pipeline connection port respectively, and then respectively socket the electric fusion pipe fittings on the front pipeline connection port and the rear pipeline connection port respectively, and the front pipeline connection port and its socket The hot-melt pipe fittings, the rear pipeline connection port and the socketed hot-melt pipe fittings are respectively hot-melt connected, and then a gasket is installed between the front pipeline connection port and the rear pipeline connection port, and finally the flange is fixed with bolts and nuts. Can. It has the advantages of convenient installation, simple, reliable and good sealing.

Description of drawings

Fig. 1 is the hot-melt connection mode of prior art;

Fig. 2 is the state after hot-melt connection of the hot-melt connection mode of the prior art;

Fig. 3 is the hot-melt connection method of the present invention.

In the figure: 1 front pipeline connection port, 2 hot-melt pipe fittings, 3 rear pipeline connection port, 4 gasket, 5 bolt, 6 flange, 7 nut.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Referring to Fig. 3, the flange type connection device of the steel mesh skeleton polyethylene composite pipe of the present invention includes a front pipeline connection port 1, a rear pipeline connection port 3, a flange 6, a gasket 4, an electrofusion pipe fitting 2, a bolt 5 and Nut 7, the front pipeline connection port 1 and the rear pipeline connection port 3 are respectively sleeved with flanges 6, the gasket 4 is placed between the front pipeline connection port 1 and the rear pipeline connection port 3, and the front pipeline connection port 1 and the washer 4, and between the rear pipeline connection port 3 and the washer 4 are respectively socketed with electrofusion pipe fittings 2, and the flanges 6 respectively socketed on the front pipeline connection port 1 and the rear pipeline connection port 3 are connected with bolts 5 Connect with nut 7. The gasket 4 is a rubber gasket. Present embodiment adopts existing technology to manufacture.

When this embodiment is used, first connect the fixed connection flange 6 on the front pipeline connection port 1 and the rear pipeline connection port 3 respectively, and then respectively socket the electrofusion pipe fittings 2 on the front pipeline connection port 1 and the rear pipeline connection port 3 On the front pipeline connection port 1 and its socketed hot-melt pipe fitting 2, the rear pipeline connection port 3 and its socketed hot-melt pipe fitting 2 are hot-melt connected respectively, and then the front pipeline connection port 1 and the rear pipeline connection port Install gasket 4 between 3, and finally connect flange 6 with bolt 5 and nut 7.

Claims (2)

1. the flange-type connection set of a polyethylene composite pipe with steel wire mesh skeleton, it is characterized in that: it comprises front pipeline connection mouth, rear line connection mouth, flange, packing ring, electric melting pipe fittings, screw bolt and nut, described front pipeline connection mouth and rear line connection mouth overlap acting flange respectively, described packing ring is placed between front pipeline connection mouth and rear line connection mouth, between front pipeline connection mouth and packing ring, electric melting pipe fittings is socketed respectively between rear line connection mouth and packing ring, be connected with screw bolt and nut between the flange that front pipeline connection mouth and rear line connection mouth are socketed respectively.

2. the flange-type connection set of polyethylene composite pipe with steel wire mesh skeleton as claimed in claim 1, is characterized in that: described packing ring is rubber washer.