CN216110630U

CN216110630U - Pressure test rubber ring of well control blowout preventer

Info

Publication number: CN216110630U
Application number: CN202122862004.9U
Authority: CN
Inventors: 周永国; 吴向东; 刘明; 杨载旭; 廖佳俊; 郑苏华; 王东; 赵继刚; 冯旭海
Original assignee: SICHUAN XINWEI RUBBER CO LTD
Current assignee: SICHUAN XINWEI RUBBER CO LTD
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-03-22
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses a pressure test rubber ring of a well control blowout preventer, wherein the well control blowout preventer comprises an annular blowout preventer, a flashboard blowout preventer and a cross joint, the pressure test rubber ring is respectively applied to the joints of the annular blowout preventer, the flashboard blowout preventer and the cross joint, and the pressure test rubber ring comprises a metal ring and an annular rubber ring made of rubber materials. The metal ring is wrapped inside the annular rubber ring or embedded at the bottom or the top of the annular rubber ring; the metal ring is wrapped inside the annular rubber ring, and a plurality of vent holes are formed in one side wall of the annular rubber ring along the circumferential direction; the outer side wall of the annular rubber ring is conical, and the included angle of the conical surface is an obtuse angle; the section of the metal ring is rectangular, isosceles triangle or circular, and when the section of the metal ring is isosceles triangle, the included angle between the vertex angle and the conical surface is the same; the conical surface of the annular rubber ring is provided with a plurality of bulges. The cost is lower, the weight is lighter, the deformation is not easy, the stability is good, and the low-pressure and high-pressure sealing can be simultaneously met.

Description

Pressure test rubber ring of well control blowout preventer

Technical Field

The utility model relates to the technical field of sealing rings, in particular to a pressure testing rubber ring of a well control blowout preventer.

Background

During the drilling process, the pressure in the well is related to the depth of the drilled well, the deeper the well, the higher the pressure, and a well control blowout preventer for controlling the pressure in the well is indispensable equipment during the drilling process. The pressure in the well is small (less than or equal to 35 Mpa), the connection of each part in the well control blowout preventer can meet the sealing requirement by using a pure rubber pressure test rubber ring, the well pressure is large (more than or equal to 70 Mpa), and the pure metal pressure test rubber ring can not deform under high pressure to meet the sealing requirement.

However, pressure test rubber rings made of different materials have respective advantages and disadvantages, and pure rubber pressure test rubber rings have the advantages of cheapness, light weight and convenient installation, and have the disadvantages that a high polymer elastomer is easy to deform under high pressure and loses the sealing effect; the pure metal pressure test rubber ring has the advantages of difficult deformation, good stability, capability of meeting high-pressure sealing and the defects of heavy weight, high price, no burr, no defect and no damage of a groove of a sealing surface.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides the pressure test rubber ring of the well control blowout preventer, which has lower cost and lighter weight compared with a pure metal pressure test rubber ring; compared with a pressure test rubber ring made of pure rubber, the rubber ring is not easy to deform and good in stability, and can meet the requirement of low-pressure and high-pressure sealing.

In order to realize the purpose of the utility model, the following scheme is adopted:

the utility model provides a pressure testing rubber ring of well control preventer, well control preventer includes annular preventer, flashboard preventer, cross, and the pressure testing rubber ring is applied to the junction of annular preventer, flashboard preventer, cross respectively, and the pressure testing rubber ring includes the metal ring and the annular rubber ring of being made by the rubber material.

The metal ring is wrapped inside the annular rubber ring or embedded at the bottom or the top of the annular rubber ring.

Furthermore, the metal ring wraps the pressure test rubber ring in the annular rubber ring, and a plurality of vent holes are formed in one side wall of the annular rubber ring along the circumferential direction.

Furthermore, the outer side wall of the annular rubber ring is conical, and the included angle of the conical surface is an obtuse angle.

Furthermore, the section of the metal ring is rectangular, isosceles triangle or circular, and when the section of the metal ring is isosceles triangle, the included angle between the vertex angle and the conical surface is the same.

Furthermore, a plurality of bulges are arranged on the conical surface of the annular rubber ring.

Further, the metal ring is replaced with a magnet.

The utility model has the beneficial effects that: the metal ring is wrapped inside the annular rubber ring or embedded at the bottom or the top of the annular rubber ring, and by the structure, the pressure testing rubber ring has the advantages of a pure rubber pressure testing rubber ring and a pure metal pressure testing rubber ring, and the defects of the pure rubber pressure testing rubber ring and the pure metal pressure testing rubber ring are eliminated, so that the pressure testing rubber ring is not easy to deform, and low-pressure and high-pressure sealing is met.

Drawings

FIG. 1 is a plan view of an embodiment of a well control blowout preventer;

FIG. 2 is a diagram of the embodiment showing a metal ring embedded in one side of an annular rubber ring;

FIG. 3 is a view showing the structure of the metal ring of the embodiment wrapped inside the annular rubber ring;

FIG. 4 is a schematic sectional view of a pressure testing rubber ring according to an embodiment;

FIG. 5 is a schematic sectional view of a pressure testing rubber ring according to an embodiment;

FIG. 6 is a schematic sectional view of a pressure testing rubber ring according to the embodiment;

FIG. 7 is a schematic sectional view of a pressure testing rubber ring according to the embodiment;

fig. 8 is a schematic sectional structure view of the pressure test rubber ring of the embodiment.

Detailed Description

As shown in fig. 2 and 3, the embodiment provides a pressure test rubber ring of a well control blowout preventer, as shown in fig. 1, the well control blowout preventer comprises an annular blowout preventer 11, a ram blowout preventer 12 and a cross 13, the pressure test rubber ring 2 is respectively applied to the joints of the annular blowout preventer 11, the ram blowout preventer 12 and the cross 13, and the pressure test rubber ring 2 comprises a metal ring 21 and an annular rubber ring 22 made of rubber.

Specifically, as shown in fig. 3 and fig. 4, the becket 21 wraps up inside annular rubber ring 22, or as shown in fig. 2 and fig. 5, becket 21 inlays in the bottom or the top of annular rubber ring 22, wrap up in the inside pressure testing rubber ring of annular rubber ring 22 to becket 21, a lateral wall of annular rubber ring 22 is equipped with a plurality of air vents 222 along the circumferencial direction, through this kind of structure, can make the pressure testing rubber ring possess the advantage of pure rubber pressure testing rubber ring and pure metal pressure testing rubber ring simultaneously, abandon both shortcomings again, make the pressure testing rubber ring in this embodiment be difficult to warp, satisfy low high-pressure seal simultaneously.

More specifically, the outer side wall of the annular rubber ring 22 is conical, and the included angle of the conical surface is an obtuse angle.

More specifically, as shown in fig. 4, 6, and 7, the section of the metal ring 21 is rectangular, isosceles triangle, or circular, and when the section of the metal ring 21 is isosceles triangle, the included angle between the vertex angle and the conical surface is the same, in application, the rubber ring for pressure test having the isosceles triangle or circular metal ring 21 is mainly used when the well pressure is high, and the rubber ring for pressure test having the rectangular metal ring 21 is mainly used when the well pressure is low.

As shown in fig. 8, the plurality of protrusions 221 are disposed on the conical surface of the annular rubber ring 22, and the protrusions 221 not only can play a certain supporting role, slow down the deformation of the annular rubber ring 22, but also can play a role in increasing the friction force of the annular rubber ring 22, thereby further increasing the sealing effect.

More specifically, the metal ring 21 can be replaced by a magnet, because the annular blowout preventer 11, the ram blowout preventer 12 and the cross joint 13 are all made of metal, the magnet is wrapped in the annular rubber ring 22 made of rubber, the connection tightness between the annular rubber ring 22 and the annular blowout preventer 11, the ram blowout preventer 12 and the cross joint 13 can be further improved, and the sealing effect is improved.

The above embodiments are only for illustrating the technical ideas and features of the present invention, and are not meant to be exclusive or limiting of the present invention. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the utility model.

Claims

1. A pressure test rubber ring of a well control blowout preventer comprises an annular blowout preventer (11), a ram blowout preventer (12) and a cross joint (13), wherein the pressure test rubber ring (2) is respectively applied to the joints of the annular blowout preventer (11), the ram blowout preventer (12) and the cross joint (13), and is characterized in that the pressure test rubber ring (2) comprises a metal ring (21) and an annular rubber ring (22) made of rubber;

the metal ring (21) is wrapped inside the annular rubber ring (22) or embedded at the bottom or the top of the annular rubber ring (22).

2. The pressure test rubber ring of the well control blowout preventer according to claim 1, wherein the metal ring (21) is wrapped in the pressure test rubber ring inside the annular rubber ring (22), and a plurality of vent holes (222) are formed in one side wall of the annular rubber ring (22) along the circumferential direction.

3. The pressure test rubber ring of the well control blowout preventer according to claim 1, wherein the outer side wall of the annular rubber ring (22) is conical, and the included angle of the conical surface is an obtuse angle.

4. The pressure test rubber ring of the well control blowout preventer according to claim 3, wherein the section of the metal ring (21) is rectangular, isosceles triangle or circular, and when the section of the metal ring (21) is isosceles triangle, the included angle between the vertex angle and the conical surface is the same.

5. The pressure test rubber ring of the well control blowout preventer according to claim 3 or 4, characterized in that a plurality of protrusions (221) are arranged on the conical surface of the annular rubber ring (22).

6. The pressure testing rubber ring of the well control blowout preventer according to claim 1, wherein the metal ring (21) is replaced with a magnet.