CN216230438U

CN216230438U - Pressure test rubber ring die

Info

Publication number: CN216230438U
Application number: CN202122861751.0U
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: 2022-04-08
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses a pressure test rubber ring mold which is used for preparing a pressure test rubber ring. 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, and the outer side wall of the annular rubber ring is conical; the middle die is arranged as a cylinder, the outer side wall of the middle die is provided with a circle of convex ring, an upper clamping groove position is arranged above the convex ring, and a lower clamping groove position is arranged below the convex ring; the upper die and the lower die are both arranged in an annular shape, the bottom of the upper die is buckled at the top of the lower die, the inner wall of the upper die is assembled in the upper clamping groove, and the inner wall of the lower die is assembled in the lower clamping groove; and a glue injection groove is formed among the upper die, the convex ring and the lower die. Can be used for preparing a pressure test rubber ring suitable for low-pressure and high-pressure sealing.

Description

Pressure test rubber ring die

Technical Field

The utility model relates to the technical field of sealing ring processing, in particular to a pressure test rubber ring die.

Background

When the pressure in the well is small (less than or equal to 35 Mpa), the joint of each part in the well control blowout preventer is sealed by using a pressure test rubber ring made of pure rubber; when the well pressure is more than or equal to 70MPa, the pure metal pressure test rubber ring is needed to be used to meet the sealing requirement without deformation under high pressure. The prior art lacks a pressure test rubber ring suitable for low-pressure and high-pressure sealing.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides the pressure test rubber ring mold which is simple in structure, convenient to use and capable of being used for preparing the pressure test rubber ring suitable for low-pressure and high-pressure sealing.

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

a pressure test rubber ring mold is used for preparing a pressure test rubber ring and comprises an upper mold, a middle mold and a lower mold.

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, and the outer side wall of the annular rubber ring is conical;

the middle die is arranged as a cylinder, the outer side wall of the middle die is provided with a circle of convex ring, an upper clamping groove position is arranged above the convex ring, and a lower clamping groove position is arranged below the convex ring;

the upper die and the lower die are both arranged in an annular shape, the bottom of the upper die is buckled at the top of the lower die, the inner wall of the upper die is assembled in the upper clamping groove, and the inner wall of the lower die is assembled in the lower clamping groove;

and a glue injection groove is formed among the upper die, the convex ring and the lower die.

Further, when the metal ring wraps the inside of the annular rubber ring, a plurality of vent holes are formed in one side of the annular rubber ring in the circumferential direction, and a plurality of support columns are arranged on the lower die and used for supporting the metal ring in positions corresponding to the vent holes in the glue injection groove.

Furthermore, a plurality of glue overflow grooves are arranged on the periphery of the glue injection groove.

Furthermore, the outer side wall of the glue injection groove is conical, and the included angle of the conical surface is an obtuse angle.

Furthermore, in the glue injection groove, a plurality of notches are arranged on the upper die and the lower die.

The utility model has the beneficial effects that: the pressure test rubber ring mold is simple in structure, can be used for preparing a pressure test rubber ring suitable for low-pressure and high-pressure sealing, and is low in cost, light in weight, not prone to deformation and good in stability.

Drawings

FIG. 1 is a first schematic plan view of a pressure test rubber ring mold according to an embodiment;

FIG. 2 is a schematic plane structure diagram of a pressure test rubber ring mold according to an embodiment;

FIG. 3 is a diagram of a metal ring embedded on one side of an annular rubber ring according to an embodiment;

FIG. 4 is a view showing the structure of the metal ring of the embodiment wrapped inside the annular rubber ring;

FIG. 5 is a lower die structure of the embodiment.

Detailed Description

As shown in fig. 3 and 4, the pressure test rubber ring 1 includes a metal ring 11 and an annular rubber ring 12 made of rubber material, the metal ring 11 is wrapped inside the annular rubber ring 12 or embedded in the bottom or top of the annular rubber ring 12, the outer side wall of the annular rubber ring 12 is conical, and in order to prepare such a pressure test rubber ring 1, as shown in fig. 1, the embodiment provides a pressure test rubber ring mold which comprises an upper mold 21, a middle mold 22 and a lower mold 23.

Specifically, the middle mold 22 is a cylinder, a circle of convex ring 221 is arranged on the outer side wall of the middle mold 22, an upper clamping groove 222 is formed above the convex ring 221, a lower clamping groove 223 is formed below the convex ring 221, the upper mold 21 and the lower mold 23 are both annular, the bottom of the upper mold 21 is buckled at the top of the lower mold 23, the inner wall of the upper mold 21 is assembled in the upper clamping groove 222, the inner wall of the lower mold 23 is assembled in the lower clamping groove 223, after the upper mold 21, the middle mold 22 and the lower mold 23 are assembled, the glue injection groove 3 is formed between the upper mold 21, the convex ring 221 and the lower mold 23, the outer side wall of the glue injection groove 3 is conical, and an included angle of the conical surface is an obtuse angle.

More specifically, as shown in fig. 4, when the prepared metal ring 11 is wrapped inside the annular rubber ring 12, a plurality of vent holes 121 are formed in one side of the annular rubber ring 12 along the circumferential direction, as shown in fig. 5, a plurality of support pillars 231 are arranged on the lower mold 23 at positions corresponding to the vent holes 121 in the glue injection groove 3, and the support pillars 231 are used for supporting the metal ring 11.

When in use, the middle die 22 is assembled on the lower die 23, the metal ring 11 is placed on the supporting column 231, and then the upper die 21 is assembled on the middle die 22 and the lower die 23; and injecting glue into the glue injection groove 3, and after molding, obtaining the pressure test rubber ring 1 with the metal ring 11 wrapped inside the annular rubber ring 12, wherein a plurality of vent holes 121 are formed in the positions of the support columns 231.

More specifically, when the prepared metal ring 11 is embedded in one side wall of the annular rubber ring 12, the metal ring 11 is only required to be placed in the glue injection groove 3, the lower die 23 does not need the support column 231, and after glue injection molding, the pressure test rubber ring 1 with the metal ring 11 embedded in one side wall of the annular rubber ring 12 can be obtained.

More specifically, the glue in the glue injection groove 3 is only large, but not small, so that a plurality of glue overflow grooves 31 are arranged on the periphery of the glue injection groove 3.

More specifically, as shown in fig. 2, in order to form a plurality of protrusions on the tapered surface of the annular rubber ring 12 to increase the sealing effect, a plurality of notches 32 are provided on the upper mold 21 and the lower mold 23 in the rubber injection groove 3, and the notches 32 are used for allowing the rubber to flow in to form the protrusions of the annular rubber ring 12.

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 die is characterized by being used for preparing a pressure test rubber ring (1), and comprising an upper die (21), a middle die (22) and a lower die (23);

the pressure test rubber ring (1) comprises a metal ring (11) and an annular rubber ring (12) made of rubber materials, the metal ring (11) is wrapped inside the annular rubber ring (12) or is embedded at the bottom or the top of the annular rubber ring (12), and the outer side wall of the annular rubber ring (12) is conical;

the middle die (22) is a cylinder, the outer side wall of the middle die (22) is provided with a circle of convex ring (221), an upper clamping groove position (222) is arranged above the convex ring (221), and a lower clamping groove position (223) is arranged below the convex ring (221);

the upper die (21) and the lower die (23) are both arranged in an annular shape, the bottom of the upper die (21) is buckled at the top of the lower die (23), the inner wall of the upper die (21) is assembled in the upper clamping groove position (222), and the inner wall of the lower die (23) is assembled in the lower clamping groove position (223);

an injection groove (3) is formed among the upper die (21), the convex ring (221) and the lower die (23).

2. The pressure test rubber ring mold according to claim 1, wherein when the metal ring (11) is wrapped inside the annular rubber ring (12), a plurality of vent holes (121) are formed in one side of the annular rubber ring (12) in the circumferential direction, a plurality of support columns (231) are arranged on the lower mold (23) in the rubber injection groove (3) at positions corresponding to the vent holes (121), and the support columns (231) are used for supporting the metal ring (11).

3. The rubber ring die for pressure test according to claim 1, wherein a plurality of rubber overflow grooves (31) are arranged on the periphery of the rubber injection groove (3).

4. The rubber ring die for pressure test as claimed in claim 1, wherein the outer side wall of the rubber injection groove (3) is tapered, and the included angle of the tapered surface is an obtuse angle.

5. The pressure test rubber ring mold according to any one of claims 1 to 4, characterized in that a plurality of notches (32) are arranged on the upper mold (21) and the lower mold (23) in the rubber injection groove (3).