CN204942879U - Conversion linkage structure moulded by steel - Google Patents

Abstract

The utility model relates to a steel-plastic conversion connection structure, which comprises a steel inner pressure ring and a PE sleeve sleeve pressed on the steel inner pressure ring. The outer side of the steel inner pressure ring is provided with several barb structures. The barb structure is stuck on the inner surface of the PE sleeve, an outer pressure ring is provided on the outer surface of the PE sleeve, and the PE sleeve is clamped by the steel inner pressure ring and the outer pressure ring. The steel outer pressure ring is also pressed on the PE sleeve, so that the PE sleeve shrinks and the inner pressure ring is more closely combined. After the above structure is adopted, the PE sleeve is directly stuck on the steel inner pressure ring through the barb structure, which cannot be reversed, prevents falling off, ensures the safety of gas transmission, saves resources, has a long service life, and reduces unnecessary loss.

Description

Steel-plastic conversion connection structure

technical field

The utility model relates to a connection structure in the technical field of gas conveying equipment, in particular to a steel-plastic conversion connection structure.

Background technique

At present, gas has become an indispensable daily necessities in people's life, and gas enters thousands of households through pipelines. These gas pipelines are generally buried underground, and the existing urban gas transmission and distribution network generally uses steel pipes. Or use PE pipes, steel pipes are connected by electric welding, which has good strength and high reliability, but the process is complicated and the cycle is long, which increases the cost; PE pipes are connected by electric fusion or hot melt, which has simple process, short cycle and low cost, but Limited by its own material, the safety factor is not high; at the same time, the PE valve used in the PE pipeline is less reliable due to the influence of temperature and other factors. Therefore, in order to ensure the reliability and safety of gas transmission, it is more important to expose it to the outside For special occasions, steel pipes should be used, and the valves used for cutting need to use more secure steel valves, and the connection between PE plastic pipes, steel pipes and valves often becomes a technical difficulty that needs to be overcome.

Contents of the invention

The technical problem to be solved by the utility model is to provide a steel-plastic conversion connection structure that is reliable and does not fall off and ensures the safety of gas transportation.

The technical solution adopted by the utility model to solve the technical problem is: a steel-plastic conversion connection structure, including a steel inner pressure ring and a PE sleeve sleeve pressed on the steel inner pressure ring, the steel inner pressure ring There are several barb structures on the outer side of the sleeve, and the barb structures are stuck on the inner surface of the PE sleeve.

More specifically, an annular groove is provided on the outer side of the steel inner pressure ring, and a sealing ring is provided in the groove, and the sealing ring is in contact with the inner surface of the PE sleeve.

More specifically, the outer surface of the PE sleeve is provided with an outer pressure ring, and the steel inner pressure ring and the outer pressure ring sandwich the PE sleeve.

The beneficial effects of the utility model are: after adopting the above-mentioned structure, the PE sleeve is directly stuck on the steel inner pressure ring through the barbed structure, which cannot be reversed, prevents falling off, ensures the safety of gas transportation, saves resources, and has a long service life , to reduce unnecessary loss.

Description of drawings

Fig. 1 is a structural representation of the utility model;

FIG. 2 is an enlarged structural schematic diagram of part A in FIG. 1 .

In the figure: 1. Steel inner pressure ring; 2. PE sleeve; 3. Outer pressure ring; 4. Barb structure; 5. Groove; 6. Sealing ring.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in detail.

As shown in Figure 1 and Figure 2, a steel-plastic conversion connection structure includes a steel inner pressure ring 1 and a PE sleeve 2 sleeved on the steel inner pressure ring 1, and the outer side of the steel inner pressure ring 1 There are several barb structures 4 on the top, and the barb structures 4 are stuck on the inner surface of the PE sleeve 2; the outer side of the steel inner pressure ring 1 is provided with an annular groove 5, and in the groove 5 A sealing ring 6 is provided, and the sealing ring 6 is in contact with the inner surface of the PE sleeve 2; the outer surface of the PE sleeve 2 is provided with an outer pressure ring 3, and the steel inner pressure ring 1 and the outer pressure Ring 3 sandwiches PE sleeve 2.

When installing, insert the steel inner pressure ring 1 into the PE sleeve 2, and the barbed structure 4 of the steel inner pressure ring 1 penetrates into the inner surface of the PE sleeve 2, so that it cannot go backwards, and press the PE sleeve through the outer pressure ring 3 2. Improve its sealing performance, through the setting of the sealing ring 6 and the groove 5, its sealing performance is also guaranteed. After installation, the sealing performance is good, there is no leakage and the service life can be improved, and the PE sleeve 2 will not fall off, reducing unnecessary losses.

It should be emphasized that: the above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any simple modification, equivalent change and Modifications still belong to the scope of the technical solution of the utility model.

Claims (3)

1. conversion linkage structure moulded by a steel, comprise trim ring in steel (1) and overlap the PE sleeve (2) be pressed on trim ring in steel (1), it is characterized in that, in described steel, the outside of trim ring (1) is provided with some barb structure (4), and described barb structure (4) is stuck in the internal surface of PE sleeve (2).

2. conversion linkage structure moulded by steel according to claim 1, it is characterized in that, in described steel, the outside of trim ring (1) is provided with the groove (5) of annular, and in described groove (5), be provided with seal ring (6), described seal ring (6) contacts with the internal surface of PE sleeve (2).

3. conversion linkage structure moulded by steel according to claim 1, it is characterized in that, the outer surface of described PE sleeve (2) is provided with outer trim ring (3), and in described steel, PE sleeve (2) is clipped in the middle by trim ring (1) and outer trim ring (3).