CN217130318U - Side door double sealing reinforcing means - Google Patents

Abstract

The application provides a side door double sealing reinforcing means, including drawing the casing, the side door is installed to casing both sides joint, side door front end portion is provided with the recess, be provided with the sealing washer between the inner chamber of recess and casing, adopt double enhancement sealing technique to constitute by radial seal and axial seal at the side of casing and side door, radial seal arranges the recess at side door front end position in, radial seal comprises two lip-shaped sealing rings and O shape sealing washer, axial seal arranges the rectangle recess of side door in, axial seal is by sealed skeleton, rubber spring, external diameter seal circle and plane sealing washer constitute. The utility model discloses a this axial seal contacts the extrusion with the casing and forms sealedly, and the side door terminal surface is equipped with runway shape recess, and the plane seal circle is packed into in the recess, and this reinforcing sealing technique possesses radial seal and terminal surface axial floating seal simultaneously, and its sealing performance is far higher than exclusive use radial seal or axial end face seal, and the bearing capacity is high, can effectively prevent to reveal.

Description

Side door double sealing reinforcing means

Technical Field

The utility model relates to a flashboard preventer field, in particular to side door dual seal reinforcing apparatus.

Background

The ram blowout preventer is a well control device for preventing blowout of high-pressure oil and gas wells, and the sealing performance between a shell and a side door is the key for determining whether the blowout preventer fails or not. The existing side door sealing technology mainly comprises a single radial sealing technology or a single axial end face sealing technology.

The defects and shortcomings of the two are shown in the following aspects: the sealing performance of single radial seal or single axial end face seal is not good, can lead to the inefficacy of preventer after revealing, but does not have the remedy measure, and when the ram-type preventer was in high pressure operating condition, the bolt can be stretched to a certain extent, and the clearance grow between casing and the side door also can lead to revealing, for this reason, we propose a side door dual seal reinforcing apparatus and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a double-sealed reinforcing means of side door can effectively solve the problem among the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a side door double seal enhancement device comprising: the side doors are clamped and installed on two sides of the shell and are key components of the flashboard blowout preventer, the front end part of each side door is provided with a groove, a sealing ring is arranged between each groove and the inner cavity of the shell, a joint of the shell and each side door is provided with a double-reinforced sealing structure which is composed of radial sealing and axial sealing, effective double sealing can be respectively realized through the radial sealing and the axial sealing,

the radial seal is arranged in a groove at the front end of the side door and consists of a double-lip seal ring and an O-shaped seal ring, the axial seal is arranged in a rectangular groove of the side door and consists of a seal framework, a plane seal ring, an outer diameter seal ring and a rubber spring.

Preferably, the O-shaped sealing ring is extruded into a micro-elliptical groove of the double-lip sealing ring, so that the double lips are slightly opened outwards to form a pre-compression amount, the shell and the sharp-tooth-shaped double-lip sealing ring are mutually extruded under a low-pressure environment, the pre-compression amount is reduced, and a sealing effect is achieved.

Preferably, sealed skeleton left side is provided with the forked tail recess, and the joint installs the plane sealing washer in the forked tail recess, and the forked tail recess can prevent that the plane sealing washer from taking place to drop opening the side door in-process, and the plane sealing washer then forms axial seal with the mutual extrusion contact of casing.

Preferably, the rubber spring is installed in the recess joint on sealing skeleton right side, and rubber spring is in compression state, under low pressure operating condition, promotes sealing skeleton through rubber spring's elasticity to promote rubber spring and casing in close contact with, form low pressure seal, under high pressure operating condition, the high pressure in the preventer directly promotes sealing skeleton, makes plane sealing washer and casing contact, forms high-pressure seal, and pressure is higher the better sealed effect.

Preferably, be provided with the external diameter sealing washer in the left recess of sealed skeleton, the external diameter sealing washer forms sealedly with the rectangle recess internal surface on the side door, prevents that high-pressure oil gas from leaking in the gap of axial seal and side door rectangle recess.

Preferably, the radial seal is arranged in a groove at the front end part of the side door to prevent the seal ring from moving, the radial seal consists of a sawtooth-shaped double-lip seal ring and a spring piece, the spring piece is squeezed into the middle of the sawtooth-shaped double lips, and the double lips slightly open outwards under the elastic force action of the spring piece to form pre-compression amount. Under a low-pressure environment, the shell and the zigzag double-lip sealing ring are mutually extruded, so that the pre-compression amount is reduced, the sealing effect is achieved, and the zigzag design can enable the sealing effect to be better; under the high-pressure environment, the shell can expand by a small displacement amount, and meanwhile, the lip parts of the sawtooth-shaped double-lip sealing ring can be outwards expanded under the driving of high pressure to compensate the displacement generated by the expansion of the shell, so that the sealing is kept, and the higher the pressure is, the better the sealing performance is.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the seal is formed by the contact and extrusion of the cuspid-shaped double-lip sealing ring and the inner surface of the shell, a micro-oval groove is arranged in the double lips of the sealing ring, and an O-shaped sealing ring is arranged in the groove; the axial seal is in contact with the shell through the axial seal A and is extruded to form seal, a runway-shaped groove is formed in the end face of the side door, a plane seal ring is arranged in the groove, and the axial seal A assembly comprises a seal framework, a plane seal ring, an outer diameter seal ring and a plane seal ring. Two runway shape recesses have been seted up to the terminal surface of sealed skeleton, planar seal and external diameter seal circle are packed into respectively in two recesses, wherein, planar seal's recess sets up to the forked tail recess, external diameter seal's recess sets up to the rectangle recess, sealed skeleton has still set up the circular shallow hole of round simultaneously, planar seal has been packed into respectively in the circular shallow hole, this reinforcing sealing technique possesses radial seal and terminal surface axial floating seal simultaneously, its sealing performance is far above the radial seal of exclusive use or axial end face seal, and bearing capacity is high, can effectively prevent to reveal.

2. The sealing ring is in contact extrusion with the inner surface of the shell to form sealing, the spring pieces are arranged in the two lips of the sealing ring, the upper lip of the sealing ring is provided with a clamping groove to prevent the spring pieces from falling off, and the radial sealing rings of the two schemes are arranged at the front end of the side door.

3. The sealing performance of the side door double-reinforced sealing technology is far higher than that of single radial sealing or single axial end face sealing; the well pressure sealing assisting principle is adopted, the sealing is reliable, the sealing device is suitable for sealing between a high-pressure shell and a side door, the lagging sealing technology of improving the sealing performance by increasing the pretightening force of the bolt is improved to a great extent, and the leakage caused by stretching the bolt due to overhigh pressure can be avoided. Meanwhile, the difficulty and the danger of dismounting the bolt by workers are effectively reduced, the service life of the bolt is prolonged, and the labor cost is reduced.

Drawings

FIG. 1 is an overall configuration view of a side door double seal reinforcing apparatus of example 1;

FIG. 2 is a structural view of a radial seal in a side door double seal reinforcing apparatus of example 1;

FIG. 3 is a structural view of an axial seal in a side door double seal reinforcing apparatus of example 1;

fig. 4 is a side view structural view of a radial seal in a side door double seal reinforcing apparatus of example 2.

In the figure: 1. a housing; 2. a side door; 3. a double lip seal ring; 4. an O-shaped sealing ring; 5. A seal ring; 6. a spring plate; 7. an outer diameter seal ring; 8. sealing the framework; 9. a rubber spring; 10. a planar seal ring; A. axial sealing; B. and (4) radial sealing.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example 1

Referring to fig. 1, a side door double seal reinforcing apparatus includes: the side door 2 is installed in the right side of the shell 1 in a clamped mode, the side door 2 is a lateral structure of the ram blowout preventer, a groove is formed in the end portion of the side door 2, a sealing ring is arranged between the groove and the shell 1, the side edges of the shell 1 and the side door 2 are formed by radial sealing B and axial sealing A through the dual-enhancement sealing technology, the sealing ring is compressed through the radial sealing B, the sealing ring is prevented from moving, and the radial sealing B and the axial sealing A are sealed through radial sealing and axial end face sealing respectively,

as shown in fig. 2, the radial seal B is disposed in a groove at the front end of the side door 2 to prevent the seal ring from falling off, the radial seal B is composed of a double-lip seal ring 3 and an O-shaped seal ring 4, the O-shaped seal ring 4 is squeezed into a micro-elliptical groove of the double-lip seal ring 3 to slightly open the double lips outwards to form a pre-compression amount, and the housing 1 and the cuspid double-lip seal ring 3 are squeezed with each other under a low-pressure environment to reduce the pre-compression amount, thereby achieving a sealing effect; under a high-pressure environment, the shell 1 can generate expansion with a small displacement, meanwhile, the lip parts of the cuspid double-lip sealing rings 3 are outwards expanded under the driving of high pressure to compensate the displacement generated by the expansion of the shell 1, so that the sealing is kept, the higher the pressure is, the better the sealing performance is, the cuspid double-lip sealing rings are in contact extrusion with the inner surface of the shell to form sealing, micro-oval grooves are arranged in the double lips of the sealing ring, and O-shaped sealing rings are arranged in the grooves;

as shown in fig. 3, the axial seal a is arranged in a rectangular groove of the side door 2, the axial seal a is a rectangular ring and used for sealing the contact surface of the shell 1 and the side door 2, the axial seal a is composed of a seal framework 8, a rubber spring 9, an outer diameter seal ring 7 and a plane seal ring 10, a dovetail groove is arranged on the left side of the seal framework 8, the plane seal ring 10 is installed in the dovetail groove in a clamping manner, the dovetail groove can prevent the plane seal ring 10 from falling off in the process of opening the side door 2, the plane seal ring 10 and the shell 1 are mutually in extrusion contact to form axial seal,

a rubber spring 9 is clamped and mounted in a groove on the right side of the sealing framework 8, the rubber spring 9 is in a compression state, the sealing framework 8 is pushed by the elasticity of the rubber spring 9 under the low-pressure working condition, so that the plane sealing ring 10 is pushed to be in close contact with the shell 1 to form low-pressure sealing, the sealing framework 8 is directly pushed by high pressure in the blowout preventer under the high-pressure working condition, the plane sealing ring 10 is made to be in contact with the shell 1 to form high-pressure sealing, and the sealing effect is better when the pressure is higher;

an outer diameter sealing ring 7 is arranged in a groove on the left side of the sealing framework 8, the outer diameter sealing ring 7 and the inner surface of a rectangular groove on the side door 2 form sealing, high-pressure oil gas is prevented from leaking from a gap between the axial seal A and the rectangular groove of the side door,

the axial seal A is in contact with the shell to be extruded to form sealing, a runway-shaped groove is formed in the end face of the side door, a plane sealing ring 10 is arranged in the groove, the axial seal A is composed of a sealing framework 8, the plane sealing ring 10, an outer diameter sealing ring 7 and a rubber spring 9, the reinforced sealing technology is simultaneously provided with radial sealing and end face axial floating sealing, the sealing performance of the reinforced sealing technology is far higher than that of the radial sealing or the axial end face sealing which is used independently, the bearing capacity is extremely high, and leakage can be effectively prevented.

Example 2

Combining fig. 4, a side door double seal reinforcing apparatus, embodiment 1, includes the following differences: the radial seal B is arranged in a groove at the front end part of the side door 2 to prevent the seal ring from moving, the radial seal B consists of a sawtooth-shaped double-lip seal ring 5 and a spring piece 6, the spring piece 6 is squeezed into the middle of the sawtooth-shaped double lips, and the double lips slightly open outwards under the elastic action of the spring piece 6 to form a pre-compression amount. Under a low-pressure environment, the shell 1 and the sawtooth-shaped double-lip sealing ring 3 are mutually extruded, so that the pre-compression amount is reduced, the sealing effect is achieved, and the sawtooth-shaped design can enable the sealing effect to be better; under high pressure, the shell 1 can expand by a small displacement, and the two serrated lip seal rings 5 are driven by high pressure, so that the lips of the two serrated lip seal rings expand outwards to compensate the displacement generated by the expansion of the shell 1, the seal is maintained, and the higher the pressure is, the better the sealing performance is.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a side door dual seal reinforcing apparatus, includes casing (1), side door (2) are installed to casing (1) both sides joint, side door (2) are the key component in the ram preventer, side door (2) front end is provided with the recess, is provided with sealing washer, its characterized in that between the inner chamber of recess and casing (1): the joint of the shell (1) and the side door (2) adopts a double-enhanced sealing structure which is composed of a radial seal and an axial seal,

radial seal sets up in the recess at side door (2) front end position, radial seal comprises two lip shape sealing ring (3) and O shape sealing washer (4), axial seal arranges the rectangle recess of side door (2) in, axial seal comprises sealed skeleton (8), rubber spring (9), external diameter sealing circle (7) and plane seal circle (10).

2. The side door double seal enhancement device of claim 1, wherein: the O-shaped sealing ring (4) is extruded into the micro-oval groove of the double-lip sealing ring (3), so that the double lips are slightly opened outwards.

3. The side door double seal enhancement device of claim 2, wherein: the shell (1) and the cuspid-shaped double-lip sealing ring (3) are mutually extruded to form pre-compression amount.

4. The side door double seal enhancement device of claim 1, wherein: sealed skeleton (8) left side is provided with the forked tail recess, and planar seal circle (10) are installed to the joint in the forked tail recess, planar seal circle (10) then form axial seal with casing (1) extrusion contact each other.

5. The side door double seal enhancement device of claim 4, wherein: rubber spring (9) are installed to the joint in the recess on sealed skeleton (8) right side, rubber spring (9) are in compression state.

6. The side door double seal enhancement device of claim 5, wherein: an outer diameter sealing ring (7) is arranged in a groove in the left side of the sealing framework (8), and the outer diameter sealing ring (7) and the inner surface of a rectangular groove in the side door (2) form sealing.

7. The side door double seal enhancement device of claim 6, wherein: the radial seal is composed of a sawtooth-shaped double-lip seal ring (5) and a spring piece (6).

8. The side door double seal enhancement device of claim 7, wherein: the spring piece (6) is squeezed into the middle of the two saw-tooth lips, and the two lips slightly expand outwards under the elastic force of the spring piece (6) to form pre-compression amount.

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