CN204628556U - A kind of Sealing back-up ring - Google Patents

Abstract

The utility model discloses a retaining ring for a sealing element, which comprises a retaining ring body applied to the sealing element. The retaining ring body includes a plurality of interlocking and closely stacked metal wires, and the ports of each metal wire are hidden inside the retaining ring body. The retaining ring body of this seal retaining ring includes a number of interconnected and stacked metal wires, so that the retaining ring has bending resilience, simple installation and low cost. The tightly stacked metal wires have a certain degree of density, no extrusion gap, and anti The extrusion effect is good, the ports of each metal wire are hidden inside the retaining ring body, the entire retaining ring has no sharp openings, will not damage the rubber seal, and the force is uniform, and the overall sealing performance is good. The utility model is suitable for the field of seals.

Description

A sealing ring

technical field

The utility model relates to the field of seals, in particular to a retaining ring for seals.

Background technique

At present, the sealing between the casing head and the casing of crude oil production equipment needs to be easy to install and have high reliability. Due to the variety and complexity of the working conditions, the range of media, pressure and temperature is very wide. Usually, the retaining ring and the sealing ring are used together. The retaining ring can prevent the sealing ring from being squeezed into the gap on the low-pressure side under the action of pressure, maintain the sealing effect, and prevent parts from moving. It can not only improve the working pressure range of the sealing ring, but also protect the sealing ring. When sealing the casing head and casing of crude oil production equipment, metal retaining rings are generally used, but the process of metal retaining rings is complicated, the cost is high, the opening position of the metal retaining rings is sharp, and the seals are easily damaged. The material of the retaining rings is spring steel. It is not resistant to corrosion, and the ability of the retaining ring to control the clearance is poor when it is under pressure. The rebound stress of the metal retaining ring is large, and it is difficult to install. Special tools are required for installation. Therefore, there is an urgent need for a retaining ring that is easy to disassemble during installation and maintenance, has low cost, and can ensure the sealing performance of the seal.

Utility model content

In order to solve the above problems, the utility model provides a seal retaining ring which is easy to install, low in cost and does not damage the seal.

The technical scheme that the utility model solves its technical problem adopts is:

A retaining ring for a seal includes a retaining ring body applied to a seal. The retaining ring body includes a number of interconnected and closely stacked metal wires, and the ports of each metal wire are hidden inside the retaining ring body.

As a further improvement of the technical solution of the utility model, the material of the metal wire is stainless steel.

Further as an improvement of the technical solution of the utility model, the stainless steel is S316.

As a further improvement of the technical solution of the utility model, the cross-sectional shape of the retaining ring body is rectangular.

As a further improvement of the technical solution of the utility model, the main body of the retaining ring is pressed and formed by a mold.

Beneficial effects of the utility model: the retaining ring body of the seal retaining ring includes a number of interlocking and closely stacked metal wires, so that the retaining ring has bending resilience, simple installation, low cost, and the tightly stacked metal wires have a certain density. High degree, no extrusion gap, good anti-extrusion effect, the ports of each metal wire are hidden inside the retaining ring body, the entire retaining ring has no sharp openings, will not damage the rubber seal, and the force is uniform, and the overall sealing is good . the

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a schematic diagram of the overall structure of the utility model embodiment;

Fig. 2 is a partial sectional view of the utility model embodiment;

Fig. 3 is a partial cross-sectional view of the embodiment of the utility model applied to a seal.

Detailed ways

The idea, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model. Apparently, the described embodiments are only some of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without paying creative efforts, All belong to the protection scope of the utility model.

Referring to Figures 1 to 3, the utility model is a retaining ring for seals, including a retaining ring body 1. The retaining ring body 1 includes a number of interconnected and closely stacked metal wires, and the ports of each metal wire are hidden in the retaining ring body. 1 interior.

The retaining ring body 1 of the seal retaining ring includes several interlocking and closely stacked metal wires, so that the retaining ring has bending resilience, simple installation and low cost. The tightly stacked metal wires have a certain degree of density and no extrusion gap , The anti-extrusion effect is good, the ports of each metal wire are hidden inside the retaining ring body 1, the entire retaining ring has no sharp openings, will not damage the rubber seal, and the force is uniform, and the overall sealing performance is good.

As a preferred embodiment of the present invention, the material of the metal wire is stainless steel.

The stainless steel retaining ring has bending resilience, is very simple to install, and has a temperature resistance range of -80°C to 200°C. Different grades of stainless steel should be selected for different working conditions to resist acid and alkali corrosion.

As a preferred embodiment of the present utility model, the stainless steel is S316.

The metal mesh retaining ring is made of stainless steel S316 material, which has strong corrosion resistance and is suitable for oilfield drilling equipment.

As a preferred embodiment of the present invention, the cross-sectional shape of the retaining ring body 1 is a rectangle.

The utility model is applicable to retaining rings with different cross-sectional shapes.

As a preferred embodiment of the present invention, the retaining ring body 1 is molded by pressing.

The retaining ring of the seal is molded, so that the retaining ring made of stainless steel wire has a certain degree of compactness, and the anti-extrusion effect is good. The gap between each metal wire and the metal wire has good heat dissipation and improves the temperature resistance. Moreover, not only the structural strength of the retaining ring is not weakened, but also the retaining ring has good elasticity and expansion coefficient. When inflated, the gap between each metal wire and the metal wire is squeezed, so that there is no extrusion gap when the metal mesh retaining ring is compressed and expanded, and the overall sealing performance is good. Mold forming, simple process, high product production efficiency and low cost.

The molding method of the utility model is roughly as follows: the metal wires are used to weave into a net, then the materials are cut for standby use, and finally molded.

Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art can also make equivalent deformations or replacements without violating the spirit of the present utility model. These equivalent deformations or replacements are all included in the rights of this application. within the bounds of the requirements.

Claims (5)

1. A retaining ring for seals, characterized in that: it includes a retaining ring body (1) applied to seals, the retaining ring body (1) includes a number of interlocking and closely stacked metal wires, and the ports of each metal wire They are all hidden inside the retaining ring body (1). 2. The seal retaining ring according to claim 1, characterized in that: the material of the wire is stainless steel. 3. The seal ring according to claim 2, characterized in that: the stainless steel is S316. 4. The retaining ring for seals according to claim 1, characterized in that: the cross-sectional shape of the retaining ring body (1) is rectangular. 5. The seal ring according to any one of claims 1-4, characterized in that: the ring body (1) is molded by pressing.