CN202132632U - A leak-proof device for flange joints - Google Patents

Abstract

The utility model provides a flange joint prevents leaking device inlays on two connecting tube end inner walls and is equipped with the round sealing ring, has welded the fixed plate in the middle of the sealing ring outer wall, and the fixed plate is arranged in between two flange joints, and the flange adopts bolted connection. An axial sealing groove is processed on the inner wall of the connecting pipe connected with the sealing ring, a radial sealing groove is processed on the side wall of the flange joint connected with the fixed plate, and a sealing ring is arranged in the sealing groove. Therefore, the liquid leakage phenomenon at the flange joint can be effectively controlled, the resource waste is reduced, the system operation cost is reduced, the oil-containing problem in a water system caused by the leakage at the joint is eliminated, the labor intensity of workers is reduced, and the environmental pollution is avoided.

Description

A leak-proof device for flange joints

technical field

The utility model belongs to the field of pipelines, in particular to an anti-leakage device used at flange joints of hydraulic pipelines.

Background technique

目前，在液压系统输送管路中大量采用法兰的接头连接方式，法兰本身在其平面的把合处安装了密封，但现场使用过程中发现，这些平面密封并不能完全起到防泄漏作用，而经常出现接头处泄漏的情况。其原因是由于螺栓松动造成密封的预紧力减小，导致密封圈压不靠所致。法兰接头泄漏不仅造成资源的浪费，直接增加了系统的运营成本；而且造成水系统中含油，处理起来十分困难，处理不好将造成环境污染。

At present, a large number of flange joint connections are used in the hydraulic system transmission pipeline. The flange itself is installed with seals at the joints of its planes. However, it is found during field use that these plane seals cannot fully prevent leakage. , and there are often leaks at the joints. The reason is that the pre-tightening force of the seal is reduced due to the loosening of the bolts, which leads to the unreliable pressure of the sealing ring. Leakage of flange joints not only wastes resources and directly increases the operating cost of the system; it also causes oil in the water system, which is very difficult to deal with, and will cause environmental pollution if not handled properly.

Contents of the invention

The purpose of this utility model is to eliminate the above-mentioned defects, and further provide a flange joint leakage prevention device that can reduce the liquid leakage at the joint and avoid resource waste and environmental pollution.

For reaching this purpose, the utility model has taken following solution:

An anti-leakage device for flange joints, characterized in that a ring of sealing rings is inlaid on the inner walls of the ends of the two connecting pipes, a fixing plate is welded in the middle of the outer walls of the sealing rings, and the fixing plate is placed between the two flange joints. Flanges are bolted.

A radial sealing groove is processed on the inner wall of the connecting pipe connected with the sealing ring, and a sealing ring is arranged in the sealing groove.

An axial sealing groove is processed on the side wall of the flange joint connected with the fixed plate, and a sealing ring is arranged in the sealing groove.

The positive effect of the utility model is:

Since the utility model is equipped with a sealing ring on the inner wall of the connecting pipe end, the axial sealing and radial sealing measures are respectively added, so the liquid leakage phenomenon at the flange joint can be effectively controlled, the waste of resources and the system cost can be reduced. Reduce operating costs, eliminate the problem of oil in the water system caused by leakage at joints, reduce labor intensity of workers, and avoid environmental pollution.

Description of drawings

The accompanying drawing is a structural sectional view of the flange joint leakage prevention device.

In the figure: sealing ring 1, flange 2, fixed plate 3, radial sealing groove 4, axial sealing groove 5, connecting pipe 6, bolt hole 7.

Detailed ways

It can be seen from the structure sectional view of the anti-leakage device of the flange joint that the utility model mainly installs a ring of sealing rings 1 whose outer diameter is the same as the inner diameter of the connecting pipe 6 on the inner wall of the end of the two connecting pipes 6, in order to facilitate installation and Fixed to prevent the loosening of the sealing ring 1, a fixing plate 3 is welded in the middle of the outer wall of the sealing ring 1, the fixing plate 3 is placed between the joints of the two flanges 2, and there are bolt holes 7 on the two flanges 2. Bolted.

In order to avoid leakage, a radial sealing groove 4 is processed on the inner wall of the connecting pipe 6 connected with the sealing ring 1, and a sealing ring is housed in the radial sealing groove 4. At the same time, an axial sealing groove 5 is processed on the side wall of the joint of the flange 2 connected with the fixed plate 3 , and a sealing ring is also installed in the axial sealing groove 5 .

Claims (3)

1. An anti-leakage device for flange joints, characterized in that a ring of sealing rings is inlaid on the inner walls of the two connecting pipe ends, a fixing plate is welded in the middle of the outer walls of the sealing rings, and the fixing plate is placed between the two flange joints The flanges are connected by bolts. 2. The anti-leakage device for flange joints according to claim 1, wherein a radial sealing groove is processed on the inner wall of the connecting pipe connected with the sealing ring, and a sealing ring is arranged in the radial sealing groove. 3. The anti-leakage device for flange joints according to claim 1, wherein an axial sealing groove is processed on the side wall of the flange joint connected with the fixing plate, and a sealing ring is arranged in the axial sealing groove.

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