CN202152888U

CN202152888U - Interface structure for pipelines

Info

Publication number: CN202152888U
Application number: CN 201120230867
Authority: CN
Inventors: 李军; 刘俊锋; 刘志丽; 徐军; 叶卫合; 李海顺; 张永杰; 韩书岭; 杨国华; 乔占栾; 王强东; 郭红星
Original assignee: Xinxing Ductile Iron Pipes Co Ltd; Xinxing Hebei Engineering Technology Co Ltd
Current assignee: Xinxing Ductile Iron Pipes Co Ltd; Xinxing Hebei Engineering Technology Co Ltd
Priority date: 2011-07-01
Filing date: 2011-07-01
Publication date: 2012-02-29
Anticipated expiration: 2021-07-01

Abstract

The utility model relates to an interface structure for pipelines, which is particularly suitable for connection of cast pipelines. A socket is inserted into a bell mouth, a press flange is compressed on the left end surface of a rubber ring placed between the socket and the bell mouth through a bolt and a nut, a support ring is arranged between the right end surface of the rubber ring and both the socket and the bell mouth, and the size H of the support ring is larger than 2h and smaller than H1. The interface structure for the pipelines has a simple structure, is secure in connection and is suitable for the pipeline with various calibers.

Description

A kind of interface structure of pipeline

Technical field

The utility model relates to a kind of pipe joint structure, and the pipeline that is particularly suitable for casting connects.

Background technique

Pipeline connects mechanical structure form commonly used has three kinds, all is through the cushion rubber in the Seal cage of differential extruding bellmouth and socket formation, relies on cushion rubber that the pressure of bellmouth inwall and socket outer wall is realized sealing function.

First kind of mechanic's interface, as shown in Figure 1, have only a kind of sealing material-cushion rubber in the Seal cage, the cushion rubber right side has a circumferential weld to communicate with the bellmouth inner chamber.In the height fluctuation cushion rubber meeting place creep of back owing to working pressure that work long hours, a part of sealing material can slowly be squeezed into the bellmouth inner chamber, causes the interior sealing material of Seal cage to reduce, and sealability decline produces the pipe leakage phenomenon.

Second kind with the third mechanical interface (like Fig. 2 and Fig. 3) at sealing material---a bracing ring or a cage ring (making with engineering plastics or macromolecular material usually) that certain degree of hardness and intensity are arranged has been placed on the right side of cushion rubber; Bracing ring or cage ring have been sealed the circumferential weld that Seal cage leads to the bellmouth inner chamber; Prevented that the sealing material place creep is squeezed into the defective of bellmouth inner chamber; But in the using process of reality, cast tube bellmouth size reach tolerance and the socket size in following tolerance, when between the tube and tube angle of yaw being arranged; The bracing ring of second kind of mechanical interface is squeezed in the bellmouth sometimes, causes sealing function to descend or inefficacy.The third mechanical interface is owing to there is a lock ring; Overcome this defective of second kind of mechanical interface; Sealing function is better; But structure is complicated, particularly need be at the spigot of the cast tube sulculus that to offer a cross section be rectangle, and the effective thickness that had not only reduced cast tube has reduced the bearing capacity of cast tube but also has caused the processed complex cost of production to increase.Since second kind with the Seal cage gap of the third mechanical interface more hour bracing ring or cage ring the closer to the bellmouth outside; Seal cage is more little, and away from the bellmouth outside, Seal cage was big more more for bracing ring or cage ring when the Seal cage gap was big more; Therefore these two kinds of mechanical interfaces all exist cast tube in the maximum socket size of bellmouth size big disadvantage of Seal cage spatial variations during hour with the minimum bellmouth size maximum of bellmouth size; Because the accuracy of manufacturing of cushion rubber is higher, the size substantially constant, so just cause cast tube the maximum socket size of bellmouth size a hour cushion rubber fill out unreal Seal cage; Differential and socket flange gap are too small, cause sealability to descend; Cushion rubber can only partly be put into Seal cage when the minimum socket size of bellmouth size was maximum, caused sealability decline, difficult installation.

Summary of the invention

In order to overcome the shortcoming of existing technology, the utility model provides a kind of interface structure of pipeline, and it is simple in structure, is connected firmly, applicable to the pipeline of various bores.

The technological scheme that its technical problem of the utility model solution is taked is: socket is inserted in the bellmouth; Differential is pressed on the left side of cushion rubber through nut, bolt; Cushion rubber is placed between socket and the bellmouth; Between the right side of cushion rubber and socket and the bellmouth bracing ring is arranged, the size H of described bracing ring is should be greater than 2 times h, less than H1.

When socket 6 cooperated with bellmouth 7, the minimum diameter of said bellmouth 7 was greater than the maximum outside diameter of socket 6, and the assurance socket can conveniently be put into bellmouth.

The bus of the outside conical surface of said bellmouth and the angle of axis are α, and the bus of inboard conical surface and the angle of axis are β, 90 °＞β＞α.

Described β is: 65 °＞β＞30 °.

Boss in inboard conical surface right side of said bellmouth, the gap between boss top and the socket is h, and h is half the less than the bracing ring height H, and there is a groove on the boss right side, is placed with the taper cushion rubber in recessed.

The utility model is simple in structure, is connected firmly, applicable to the pipeline of various bores.

Description of drawings

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

Fig. 1,2,3 is this existing technology sectional view;

Fig. 4 is the utility model sectional view;

Fig. 5 is the utility model bracing ring enlarged view.

Embodiment

Like Fig. 4, shown in 5; Socket 6 is inserted in the bellmouth 7; Differential 3 is pressed on the left side of cushion rubber 4 through nut 2, bolt 1, and cushion rubber 4 is placed between socket 6 and the bellmouth 7, between the right side of cushion rubber 4 and socket 6 and the bellmouth 7 bracing ring 5 is arranged; The size H of described bracing ring 5 is should be greater than 2 times h, less than H1.Can guarantee that bracing ring 5 is not squeezed in the bellmouth 7.

The bus of the outside conical surface 8 of said bellmouth and the angle of axis are α, and the bus of inboard conical surface 9 and the angle of axis are β, 90 °＞β＞α.Described β is: 65 °＞β＞30 °.Can guarantee that so no matter bellmouth 7 and socket 6 sizes be the hour combination of the maximum socket diameter of bellmouth diameter; Or the bellmouth diameter is minimum and bellmouth diameter greatest combined; Or other situation; The position of bracing ring 5 does not have big variation, has guaranteed that like this volume of Seal cage big variation can not occur, guarantees the reliability that seal ring is installed.

There is boss on inboard conical surface right side in the inner chamber of said bellmouth 7, and the boss right side is fluted, and conical seal ring 10 is arranged in the groove, and described socket 6 withstands on the conical seal ring 10.Can further improve socket 6 and bellmouth 7 sealing effects.

Claims

1. the interface structure of a pipeline; Socket (6) is inserted in the bellmouth (7); Differential (3) is pressed on the left side of cushion rubber (4) through nut (2), bolt (1), and cushion rubber (4) is placed between socket (6) and the bellmouth (7), between the right side of cushion rubber (4) and socket (6) and the bellmouth (7) bracing ring (5) is arranged; It is characterized in that: the size H of described bracing ring (5) is should be greater than 2 times h, less than H1.

2. the interface structure of pipeline according to claim 1 is characterized in that: when socket (6) and bellmouth (7) cooperated, the minimum diameter of said bellmouth (7) was greater than the maximum outside diameter of socket (6).

3. the interface structure of pipeline according to claim 1 and 2, it is characterized in that: the bus of the outside conical surface (8) of said bellmouth (7) and the angle of axis are α, and the bus of inboard conical surface (9) and the angle of axis are β, 90 °＞β＞α.

4. the interface structure of pipeline according to claim 3, it is characterized in that: described β is: 65 °＞β＞30 °.

5. the interface structure of pipeline according to claim 1 and 2; It is characterized in that: there is boss on inboard conical surface right side in the inner chamber of said bellmouth (7); The boss right side is fluted, and conical seal ring (10) is arranged in the groove, and described socket (6) withstands on the conical seal ring (10).