CN210598901U

CN210598901U - Blowout prevention box with excellent sealing performance

Info

Publication number: CN210598901U
Application number: CN201921636225.0U
Authority: CN
Inventors: 刘长志
Original assignee: Jiangsu Rongling Machinery Manufacturing Co Ltd
Current assignee: Jiangsu Rongling Machinery Manufacturing Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-05-22
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a sealing performance is superior prevents spouting box, including the end cover, locate the end cover below the sealed chamber, locate the sealed intracavity portion go up the piston, be fixed in the end cover inner wall sealed packing element, locate the last cover of pressing of sealed packing element below, locate and press the direction subassembly of cover below, be used for the shell subassembly of fixed sealed chamber, locate the valve subassembly of sealed chamber side and be used for the joint of being connected with outside tubular column. The utility model discloses a double seal's mode, sealed effect is better.

Description

Blowout prevention box with excellent sealing performance

Technical Field

The utility model relates to a preventer field, concretely relates to sealing performance is superior prevents spouting box.

Background

In the mining operation, the connecting pipe is a device which does not need to be disassembled and can be continuously lifted and operated under pressure, the connecting pipe is a blowout prevention box which is favorable for ensuring the operation under pressure, the blowout prevention box is arranged on the outer body of the connecting pipe, the internal oil pressure of the connecting pipe is ensured to be stable, the sealing performance of the blowout prevention box directly influences the operation efficiency of the continuous pipe, and therefore the continuous optimization of the sealing performance of the blowout prevention box is very necessary.

SUMMERY OF THE UTILITY MODEL

The end cover, locate the sealed chamber of end cover below, locate the inside piston of going up of sealed chamber, be fixed in the sealed packing element of end cover inner wall, locate last pressure cover of sealed packing element below, locate go up and press the guide assembly of cover below, be used for fixing the shell subassembly of sealed chamber, locate the valve subassembly of sealed chamber side and be used for the joint of being connected with outside tubular column, the shell subassembly includes casing and lower casing, go up the casing with adopt the bolt to fix down between the casing.

Preferably, the guide assembly comprises a copper sleeve abutted against the lower end face of the upper pressing sleeve, a lower pressing sleeve arranged below the copper sleeve, a sealing ring abutted against the lower end face of the lower pressing sleeve and a buffer sleeve for buffering pressure.

Preferably, the valve assembly comprises a rotating buckle, a connecting block arranged on the sealing cavity, a connecting stud used for connecting the sealing cavity and the upper shell, a drainage tube arranged on the inner wall of the sealing cavity and a special pipe fitting used for filling pressure oil into the sealing cavity.

Preferably, the special pipe fitting comprises a plugboard, an oil inlet joint arranged on the plugboard and an oil outlet elastic pipe communicated with the plugboard.

Preferably, the tail of the drainage tube is in an outward expansion mode.

Has the advantages that:

1. adopt valve assembly and hydraulic seal's mode to seal, it is better for the pure mechanical seal effect of tradition.

2. The mode that fluid is sealed provides convenience for the troubleshooting in later stage, in case the sealed crack appears and can discover rapidly, can avoid in the operation because the production accident that the sealing performance breaks down and leads to.

Drawings

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

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of a special pipe structure in the present invention.

The figures in the drawings represent:

1. the device comprises an end cover 2, a rotary buckle 3, a connecting stud 4, a special pipe fitting 5, an upper shell 6, an upper piston 7, a lower shell 8, a joint 9, a sealing cavity 10, an upper pressing sleeve 11, a copper sleeve 12, a lower pressing sleeve 13, a sealing ring 14, a buffering sleeve 15, an inserting plate 16, an oil inlet joint 17, an oil outlet elastic pipe 18, a sealing rubber cylinder 19, a connecting block 20 and a drainage pipe.

Detailed Description

The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "up", "down", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 and 2, the utility model discloses an end cover 1, locate sealed chamber 9 of end cover 1 below, locate piston 6 on the inside of sealed chamber 9, be fixed in sealed packing element 18, the locating of end cover 1 inner wall last pressure cover 10, locate of sealed packing element 18 below go up and press the direction subassembly of cover 10 below, be used for fixing sealed chamber 9's shell subassembly, locate the valve subassembly of sealed chamber 9 side and be used for the joint 8 of being connected with outside tubular column, the shell subassembly includes casing 5 and lower casing 7, go up casing 5 with adopt the bolt to fix between the casing 7 down.

The guide assembly comprises a copper sleeve 11 abutted against the lower end face of the upper pressing sleeve 10, a lower pressing sleeve 12 arranged below the copper sleeve 11, a sealing ring 13 abutted against the lower end face of the lower pressing sleeve 12 and a buffer sleeve 14 for buffering pressure. The valve assembly comprises a rotating buckle 2, a connecting block 19 arranged on the sealing cavity 9, a connecting stud 3 used for connecting the sealing cavity 9 with the upper shell 5, a drainage tube 20 arranged on the inner wall of the sealing cavity 9 and a special pipe fitting 4 used for filling pressure oil into the sealing cavity 9. The special pipe fitting 4 comprises an inserting plate 15, an oil inlet joint 16 arranged on the inserting plate 15 and an oil outlet elastic pipe 17 communicated with the inserting plate 15, and the tail part of the drainage pipe 20 is in an outward expansion type.

During sealing, insert the installation clearance of reservation with purpose-built pipe fitting 4, locking connection double-screw bolt 3, the elastic material that can bond of 4 upper surfaces of purpose-built pipe fitting, reinforcing sealing performance, oil feed joint 16 connects hydraulic oil, and hydraulic oil gets into out oil bomb tube 17 through picture peg 15, and the hydraulic oil in the play oil bomb tube 17 gets into drainage tube 20, and fluid will go up piston 6 and push down, goes up and has the gap between piston 6 and the end cover 1, and hydraulic oil compresses tightly sealed glue cylinder 18 after getting into, the utility model discloses be equipped with cushion collar 14, the impact force of each part when reducing the hydraulic oil extrusion. The utility model discloses when well hydraulic oil got into the sealing connection pipe face, provide certain power of holding tightly, provide stable assurance for the push down operation of connecting pipe.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.

Claims

1. A blowout prevention box with excellent sealing performance is characterized in that: including the end cover, locate the end cover below the sealed chamber, locate sealed intracavity portion last piston, be fixed in the sealed packing element of end cover inner wall, locate last pressure cover of sealed packing element below, locate go up the direction subassembly of pressing the cover below, be used for fixing the shell subassembly of sealed chamber, locate the valve subassembly of sealed chamber side and be used for the joint of being connected with outside tubular column, the shell subassembly includes casing and lower casing, go up the casing with adopt the bolt to fix down between the casing.

2. A blowout preventer according to claim 1, wherein the blowout preventer comprises: the guide assembly comprises a copper sleeve abutted against the lower end face of the upper pressing sleeve, a lower pressing sleeve arranged below the copper sleeve, a sealing ring abutted against the lower end face of the lower pressing sleeve and a buffer sleeve for buffering pressure.

3. The blowout prevention box with excellent sealing performance according to claim 1, wherein the valve assembly comprises a rotating buckle, a connecting block arranged on the sealing cavity, a connecting stud used for connecting the sealing cavity and the upper shell, a drainage pipe arranged on the inner wall of the sealing cavity and a special pipe fitting used for filling pressure oil into the sealing cavity.

4. A blowout preventer according to claim 3, wherein the blowout preventer comprises: the special pipe fitting comprises a plugboard, an oil inlet joint arranged on the plugboard and an oil outlet elastic pipe communicated with the plugboard.

5. A blowout preventer according to claim 3, wherein the blowout preventer comprises: the tail part of the drainage tube is of an outward expansion type.