CN201173349Y

CN201173349Y - Four side pressurized sealed high pressure resistant sealed ring possessing framework

Info

Publication number: CN201173349Y
Application number: CNU2008200340893U
Authority: CN
Inventors: 宋章根
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-15
Filing date: 2008-04-15
Publication date: 2008-12-31
Anticipated expiration: 2018-04-15

Abstract

The utility model relates to a four-face pressed sealing high-pressure resistant seal ring with a framework, and belongs to a sealing material. The seal ring is characterized in that the seal ring is formed by superimposing and winding a long strip framework (1) with the height H being no less than 10 mm and a long strip flexible seal material (2); cladding layers (3) are uniformly arranged on both head faces of the seal ring formed by winding, as well as outer round face and an inner round face, and the voltage withstand strength thereof is between 200 MPa and 480 MPa. The high-pressure resistant seal ring has the advantages of simple structure, good pressure resistant performance and wide application scope, and is particularly suitable for sealing high-pressure sealing faces.

Description

The four side pressurized sealed high pressure resistant sealed ring that has skeleton

Technical field

The utility model relates to a kind of seal ring, especially a kind of high pressure resistant O-ring seal, specifically a kind of four side pressurized sealed high pressure resistant sealed ring that has skeleton.

Background technique

At present, in the pipeline of petrochemical industry and power industry use, often to use high pressure resistant seal ring, and the pressure that requires such seal ring can bear four direction also can keep for a long time, sometimes even need to do between the sealing surface relative movement, common seal ring is owing to the relative movement that can't bear under the high pressure is easy under high pressure disintegrate embrittlement, do not have seal action, the highest compression resistance of all kinds of seal rings on the existing handbook generally is no more than 50MPa, when surpassing this pressure, must carry out the Specialty Design of sealing configuration, make manufacture cost greatly increase.

Though also there is the method that in seal ring, increases skeleton to improve its compression resistance at present, but the use occasion of this class seal ring only limits to the occasion of end face seal, and as the sealing between the flange plate, it is blow-by radially, and its thickness is generally between 3～6mm, and the application is the static pressure state.

The claimant has consulted lot of documents for this reason, creatively skeleton seal ring is improved, make it guarantee to have the sealability that has good four direction under prerequisite of very big resistance to pressure, and can the embrittlement because of relative movement, dynamically sealing use can under high pressure conditions, be done.

According to the knowledge of the applicant, the report that does not still have similar seal ring at present.

Summary of the invention

The purpose of this utility model is the problem that can't bear the four sides high pressure at existing O-ring seal, designs the four side pressurized sealed high pressure resistant sealed ring that has skeleton a kind of simple in structure, easily manufactured.

The technical solution of the utility model is:

A kind of four side pressurized sealed high pressure resistant sealed ring that has skeleton, it is characterized in that it is not less than the rectangular skeleton 1 of 10mm and flexible sealing material 2 by height H and laminates and be entwined, on the both ends of the surface of the annular ring that is entwined and periphery and inner headed face, be equipped with clad 3.

The compressive strength of described four side pressurized sealed high pressure resistant sealed ring is between 200MPa～480MPa.

Described skeleton 1 is that planar, waveform are tabular, one or more the combination in tooth plate shape or the arc plate.

Described skeleton 1 or be metal frame or for high-strength organic material skeleton.

Described flexible sealing material 2 is Expanded graphite, titanium fiber or rubber-like sealing material.

Described clad 3 is rubber or titanium fibrage body or Expanded graphite bar.

The height H of described rectangular skeleton 1 and rectangular flexible sealing material 2 is all between 10～50mm.The beneficial effects of the utility model:

The utility model has creatively been broken through the thickness size of traditional skeleton diaphragm seal, and drawn through a large amount of experiments and theory analysis that the optimum height scope of skeleton is 10～50 millimeters in the seal ring, wherein especially with 25～50 millimeters range effect the bests, guaranteed that by the non-deformability of skeleton it under high pressure still can keep certain shape, simultaneously at the both ends of the surface of seal ring and the clad of inner and outer round surface increase high-performance titanium fiber or flexible graphite material manufacturing, on the one hand increase sealing effect, rolled in the time of preventing the sealing surface relative movement effectively on the other hand and decompose the embrittlement phenomenon.

In addition, the utility model is entwined synchronously by sealing material and skeleton are laminated then earlier, has increased the combination force between sealing material and the skeleton, can give full play to the non-deformability of skeleton, has further improved withstand voltage properties.

The utility model also has simple in structure, good pressure-resistant performance, and the advantage of applied range, it is particularly useful for the sealing of high pressure active face.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the application schematic representation that is sealed in the high pressure pipe line whirl compensator of the present utility model.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

A kind of four side pressurized sealed high pressure resistant sealed ring that has skeleton, it is not less than the rectangular skeleton 1 of 10mm and rectangular flexible sealing material 2 by width and laminates and be entwined, on the both ends of the surface of the annular ring that is entwined and periphery and inner headed face, be equipped with clad 3, its compressive strength is between 200MPa～480MPa, as shown in Figure 1.During concrete enforcement skeleton 1 can be that planar, waveform are tabular, one or more the combination in tooth plate shape or the arc plate, wherein best with the tabular compressive strength of waveform shown in Figure 1, the pressure maximum face that is born in can the use occasion according to seal ring during concrete enforcement is selected the skeleton 1 of respective shapes, when mainly being subjected to force direction to be end face, skeleton also can adopt arc plate structure, the material of skeleton can adopt the metallic material skeleton, also can adopt high-strength organic material skeleton.Twine after should earlier skeleton and the middle filler sealing material that seal being laminated during concrete the manufacturing again and form, flexible sealing material 2 can adopt flexible graphite material or other formability is good, compressive strength is high material such as withstand voltage modified rubber, polyester material etc.Clad 3 is the best with the knitted body that adopts rubber or titanium fiber, also can adopt the Expanded graphite bar to coat, and also can adopt the material as clad 3 such as other macromolecular material such as carbon fiber, high-strength glass fibre knitted body.The height H of rectangular skeleton 1 and rectangular flexible sealing material 2 can be selected according to seal space and required compressive strength during concrete enforcement, be advisable to be not less than 10 millimeters, its Extreme breadth should be controlled in the 50mm, its manufacture difficulty and cost will increase considerably during greater than 50mm, according to experimental verification, the width of skeleton to be being the best between the 25-50, but the seal ring of the skeleton manufacturing in this dimensional range its more than pressure high pressure 480MPa that can bear.

Fig. 2 is a concrete application examples of the present utility model.Seal ring in the whirl compensator among Fig. 2 requires the four sides sealing, high pressure resistant, adopting thickness of the present utility model is behind 25 millimeters the seal ring, still there is not leakage after pipe and outer tube relatively rotate 10000 times (master gage definite values) in making after testing when manifold pressure increases to 480MPa, after the release, the seal ring surface does not have damaged, and leaking and the embrittlement phenomenon appears when being pressurized to 10MPa in the seal ring of ordinary construction, thinks that by analysis this is because skeleton and the coefficient result of clad.

Seal ring of the present utility model both can be used for petrochemical industry, power industry, also can be used for similarly having the relative movement type circumference sealing occasion of high pressure requirement.

The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.

Claims

1, a kind of four side pressurized sealed high pressure resistant sealed ring that has skeleton, it is characterized in that it is not less than the rectangular skeleton (1) of 10mm and flexible sealing material (2) by height H and laminates and be entwined, on the both ends of the surface of the annular ring that is entwined and periphery and inner headed face, be equipped with clad (3).

2, the four side pressurized sealed high pressure resistant sealed ring that has skeleton according to claim 1 is characterized in that its compressive strength is between 200MPa～480MPa.

3, the four side pressurized sealed high pressure resistant sealed ring that has skeleton according to claim 1 is characterized in that described skeleton (1) is tabular for planar, waveform, one or more the combination in tooth plate shape or the arc plate.

4, the four side pressurized sealed high pressure resistant sealed ring that has skeleton according to claim 1 is characterized in that described skeleton (1) or for metal frame or for high-strength organic material skeleton.

5, the four side pressurized sealed high pressure resistant sealed ring that has skeleton according to claim 1 is characterized in that described flexible sealing material (2) is Expanded graphite, titanium fiber or rubber-like sealing material.

6, the four side pressurized sealed high pressure resistant sealed ring that has skeleton according to claim 1 is characterized in that described clad (3) is rubber or titanium fibrage body or Expanded graphite bar.

7, the four side pressurized sealed high pressure resistant sealed ring that has skeleton according to claim 1, the height H that it is characterized in that described rectangular skeleton (1) and rectangular flexible sealing material (2) is all between 10～50mm.