CN2307156Y

CN2307156Y - High temp. high pressure steam over-flow member joint sealed ring

Info

Publication number: CN2307156Y
Application number: CN 97229605
Authority: CN
Inventors: 谷长青; 代英伟; 王今宇
Original assignee: Drilling-Extracting Process Inst Liaohe Petroleum Exploration Administration (
Current assignee: Drilling-Extracting Process Inst Liaohe Petroleum Exploration Administration (
Priority date: 1997-10-10
Filing date: 1997-10-10
Publication date: 1999-02-10
Anticipated expiration: 2007-10-10

Abstract

The utility model relates to a sealing ring of an overcurrent element joint for high temperature and pressure fluid on Fluid delivery system in oil and chemical industries, composed of an inner sealing ring (1) and an outer adjusting element (2). A circular bead is arranged outside the inner sealing ring (1), and the inner side of the outer adjusting element (2) is matched with the circular bead outside the inner sealing ring (1). Due to the composite structure of the inner sealing ring (1) and the outer adjusting element (2), the utility model can improve the sealing performance under high temperature and pressure, and can reduce the waste of energy. The sealing ring can be reused.

Description

High temperature and high pressure steam flow passage part joint sealing circle

The utility model relates to the high-temperature, high pressure fluid flow passage part joint sealing circle that uses on a kind of oil, the chemical industry fluid delivery system.

When heavy crude producing, inject the process of high temperature and high pressure steam to oil reservoir, often leak vapour at the joint area of pipeline, its reason is exactly due to the seal ring of used various sheet materials and structure all can not seal well.Present employed seal ring, majority be by the clip head that forms sealing pair with it under the extruding of the axial force of slips, make it produce plastic deformation, sealing is finished in the gap of filling and leading up between sealing pair, in case temperature variation or sealing pair size have error, vapour just takes place to leak; And employed seal ring all is disposable use.

The purpose of this utility model is to provide a kind of ability high temperature and high pressure steam flow passage part joint sealing circle, and can be repeatedly used.

The object of the present invention is achieved like this, and it is made up of inner seal ring (1), outer adjustment piece (2), and a shoulder is arranged in the outside of inner seal ring (1), and outer adjustment piece (2) is inboard to be cooperated with the outside shoulder of inner seal ring (1).The working principle of sealing circle is according to when the suffered stress of metallic material during less than certain value, it is deformed into linear reversible principle, utilize metallic material when stretching (compression), the axial thrust load that is produced in its limit of elasticity scope reaches sealing, and seal ring can be reused.

The utility model has improved the sealability under the High Temperature High Pressure owing to adopted the composite structure of inner seal ring 1, outer adjustment piece 2, reduces the waste of the energy, and seal ring can be reused.

Fig. 1 is the structural representation of the utility model scheme one.

Fig. 2 is the structural representation of the utility model scheme two.

Below in conjunction with Fig. 1, Fig. 2 the utility model is elaborated.

In Fig. 1, the shoulder circular arc position of inner seal ring 1, the b plane of a plane and outer adjustment piece 2 contacts with sealing pair simultaneously, when axial force strengthens gradually, two shoulder generation resiliently deformables, and generation sealing, simultaneously, outer adjustment piece 2 forms interference fit with inner seal ring 1 under axial force, at this moment inner seal ring 1, the distortion of outer adjustment piece 2 does not all surpass limit of elasticity, and the power that makes the two produce the telescopic resilience distortion is very big, this power resolves into radial force and axial force again, and the counter-force of axial force acts on a, on the b face, form the sealing of second road, two seals power just can reach sealing greater than hydrodynamic pressure like this.

In Fig. 2, outer adjustment piece 2 is that to have a flexible material of spring-back force made, is equivalent to sealing and adds material, and the sectional shape of outer adjustment piece 2 also can be rectangle, trapezoidal, triangle, O shape, and wherein inner seal ring 1 can recover to use.

Claims

1. the utility model relates to the high-temperature, high pressure fluid flow passage part joint sealing circle that uses on a kind of oil, the chemical industry fluid delivery system, it is characterized in that: it is made up of inner seal ring (1), outer adjustment piece (2), in the outside of inner seal ring 1 shoulder is arranged, outer adjustment piece (2) is inboard to be cooperated with the outside shoulder of inner seal ring (1).

2. high-temperature, high pressure fluid flow passage part joint sealing circle according to claim 1, it is characterized in that: outer adjustment piece (2) is that to have a flexible material of spring-back force made, be equivalent to sealing and add material, the sectional shape of outer adjustment piece (2) also can be rectangle, trapezoidal, triangle, O shape, and wherein inner seal ring (1) can recover to use.