CN102252143A

CN102252143A - Interface structure of pipeline

Info

Publication number: CN102252143A
Application number: CN2011101841000A
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: 2011-11-23

Abstract

The invention relates to an interface structure of a pipeline, which is especially suitable for the cast pipeline connection. A faucet is inserted in a muzzle bell; a pressure flange is pressed on the left end face of a rubber ring via a nut and a bolt; the rubber ring is arranged between the faucet and the muzzle bell; a support ring is arranged among the right end face of the rubber ring, the faucet and the muzzle bell; the size H of the support ring is more than twice of h and less than H1. The interface structure of the pipeline in the invention has the advantages of simple structure and stable connection and is suitable for pipelines with different sizes.

Description

A kind of interface structure of pipeline

Technical field

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

Background technique

Pipeline connects mechanical structure form commonly used three kinds, all is by 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, has 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.Because creep can take place the height fluctuation cushion rubber of working pressure, and a part of sealing material can slowly be squeezed into the bellmouth inner chamber, cause sealing material minimizing in the Seal cage in the back that works long hours, sealability descends, and produces the pipe leakage phenomenon.

Second kind and the third mechanical interface (as Fig. 2 and Fig. 3) are at sealing material---and 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 sealing material generation 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, 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 the Seal cage gap of second kind and the third mechanical interface more hour bracing ring or cage ring the closer to the bellmouth outside, Seal cage is more little, bracing ring or cage ring were more away from the bellmouth outside when Seal cage gap was big more, Seal cage is 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 to descend, install difficulty.

Summary of the invention

In order to overcome the shortcoming of prior art, the invention provides a kind of interface structure of pipeline, it is simple in structure, is connected firmly, applicable to the pipeline of various bores.

The present invention solves the technological scheme that its technical problem takes: socket is inserted in the bellmouth, differential is pressed on the left side of cushion rubber by 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 and bellmouth 7 cooperations, the minimum diameter of described bellmouth 7 is 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 described 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 described bellmouth, the gap between boss top and the socket is h, and h is less than half of bracing ring height H, and there is a groove on the boss right side, is placed with the taper cushion rubber in recessed.

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

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1,2,3 is this prior art sectional view;

Fig. 4 is a sectional view of the present invention;

Fig. 5 is a bracing ring enlarged view of the present invention.

Embodiment

Shown in Fig. 4,5, socket 6 is inserted in the bellmouth 7, differential 3 is pressed on the left side of cushion rubber 4 by nut 2, bolt 1, 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 described 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 are the hour combinations 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, the volume that has guaranteed Seal cage so 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 described 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) by nut (2), bolt (1), 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 described 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 described 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 described 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).