CN202629128U - Sealing ring with double conical surfaces - Google Patents

Abstract

The utility model discloses a sealing ring with double conical surfaces. The sealing ring comprises an upper conical sealing surface and a lower conical sealing surface which are taken as main sealing surfaces, and two auxiliary sealing surfaces are added on the outer sides of the main sealing surfaces. The sealing ring with the double conical surfaces effectively solves the problem about sealing reliability and greatly reduces possible leakage. The sealing ring made of metal is fire retardant and has the advantages of reusability, high reliability, long service life and the like relative to a common sealing ring with a single sealing surface.

Description

Double cone sealing ring

technical field

The utility model relates to a sealing device, in particular to a sealing ring used between a gate valve body and a valve cover.

Background technique

In the prior art, the sealing ring between the gate valve body and the bonnet is mainly an ordinary single-sided sealing ring, which is sealed by a single sealing surface, and its size is small. After a period of use, the adaptability of pressure changes is weakened. , the sealing effect gradually decreases or even fails, thus increasing the maintenance or replacement cost of the product, and the reliability and long-lasting sealing are not satisfactory.

Contents of the invention

The purpose of the invention of the utility model is to overcome the shortcomings in the background technology and provide a double-cone sealing ring with good sealing effect, which can be used many times and is easy to maintain.

The technical scheme of the utility model is: a double-cone sealing ring, including two main sealing surfaces up and down, two auxiliary sealing surfaces are added outside the two main sealing surfaces up and down, the two main sealing surfaces up and down are conical seals noodle.

The angle between the tapered sealing surface and the vertical direction is 10°-15°.

The working principle of the utility model is:

The two 10°-15° conical surfaces form a tight contact seal with the upper and lower connected parts under the action of the pressing force. At the same time, during use, as the fluid pressure and temperature change, the sealing ring and the two connected parts The relative displacement of the connected parts will cause the plane between the two tapered surfaces to form a rigid contact with the connected parts, and finally achieve a complete seal.

The beneficial effects of the utility model are: the utility model uses two conical sealing surfaces as main sealing surfaces and two planes as auxiliary sealing surfaces; the possibility of leakage is reduced. Compared with ordinary single-sided sealing rings, the sealing ring has the advantages of high reliability, repeated use, long service life and the like. The utility model has the characteristics of pressure self-tightening sealing, does not need to apply pre-tightening force, is especially suitable for application under high pressure conditions above 10000Psi, and can be used on valves and wellhead equipment.

Description of drawings

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

Fig. 2 is the schematic diagram that the utility model is used for sealing between the valve body and the valve cover;

Among them: 1. Conical sealing surface, 2. Auxiliary sealing surface, 3. Double cone sealing ring, 31. Valve cover, 32. Valve body.

Detailed ways

As shown in Figure 2, the utility model can be applied to the sealing between the valve body (32) and the valve cover (31).

The structure of the utility model includes two upper and lower conical sealing surfaces (1) as shown in Fig. 1, and two auxiliary sealing surfaces (2) are added outside the upper and lower two conical sealing surfaces. The main body of the utility model is made of metal.

The angle between the tapered sealing surface and the vertical direction is 10°-15°.

Claims (2)

1. A double-cone sealing ring, which is characterized in that it includes two main sealing surfaces up and down, and two auxiliary sealing surfaces are added outside the two main sealing surfaces up and down, and the two main sealing surfaces up and down are conical sealing surfaces. 2. The double cone sealing ring according to claim 1, characterized in that the angle between the tapered sealing surface and the vertical direction is 10°-15°.

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