KR20210030675A - Mudgate valve for crude oil and gas drilling plant - Google Patents

Abstract

The present invention relates to a mud gate valve, not a general gate valve, which has an efficient sealing effect with respect to fluid and mud, since a fixed part of a rubber material, a first surface part, and a second surface part are formed on a disk-shaped metal material and the inner and outer diameters of the disk. The mud gate valve has a complete product structure consisting of stages, so repair and replacement of parts are easy. Even that the most of the key technologies related to domestic high-value oil well drilling plants, ships, and offshore plants are owned by overseas advanced companies, through localization, it becomes the basis for domestic drilling system development and contributes to the domestic energy industry and exports, thereby increasing exports.

Description

Mudgate valve for crude oil and gas drilling plant.

The present invention relates to a mud gate valve, and more particularly, to a mud gate valve for a crude oil and gas drilling plant that can be stably used in a high pressure mud system when drilling crude oil and gas.

The mud gate valve is applied to the Standpipe Manifolds System and the oil & gas pipeline, in addition to the mud flow control system, which is the core of onshore and deep sea oil well drilling plants. The role of mud is to lubricate the rotating drill bit, cool the drill bit, remove rock debris during drilling, prevent borehole collapse, stabilize the pressure in the borehole, prevent hydrocarbons from entering the borehole, and stabilize the oil well. It plays a big role. As the mud, which is important for drilling, is stored in various forms depending on the purpose, the importance of the mud valve becomes very significant. In addition, as the borehole becomes deeper, a mud valve that is stable at a higher pressure is desperately needed. Prior art includes patent registration number 10-1037191 "large gate valve with easy handle action" and patent registration number 10-0706937 "knife gate valve".

The present invention is not a general gate valve, but is a mud gate valve of 7500 psi or higher, and as it must be applied to a mud flow control system or an oil well drilling control system and durability that can withstand high pressure compared to a conventional valve, a robust operation and durability are required. In the case of the mud gate valve currently used, most of the problems rely on imports and problems that are difficult to assemble and repair occur.

A handle with a handle space portion formed thereon;

A handle moving portion having a first through hole formed in an inner diameter in the handle space portion, a first threaded portion formed in the center of the first through hole, and a second threaded portion provided at an end of the outer diameter;

A vertical moving portion having a first screw portion formed at an upper outer diameter of the first screw portion and a gate connecting portion formed at a lower portion thereof;

A cylindrical gate having a fixing groove at an upper portion to connect the gate connection portion and an elliptical groove portion at a lower portion thereof;

The second threaded part of the handle moving part is interviewed with the 2-1 threaded part, the upper part of the 2-1 threaded part is provided in the first inlet to mount the housing packing, and the second inlet is formed in the lower part to form the first packing. A screw housing provided with a packing liter inner, a cylindrical portion and a connection hole formed at an outer diameter, and a second through hole extending at a center thereof;

A first connection hole is mounted in the connection hole, a coupling hole is formed on both sides of the first connection hole, a third inner inlet is provided in the center to mount a buffer member, and an elliptical lower space is formed in the lower part, and the outer diameter of the lower space is There is a cover provided with a second packing;

The cover is provided with a fourth inner inlet formed in the center, a bolt coupling hole is provided in the outer diameter, a gate space is provided under the fourth inner inlet, and an inlet hole penetrates to the left and right of the gate space, and the inlet hole and the gate space A body having a fifth inner inlet portion formed therebetween;

A wear prevention member having a wear prevention sealing inner inlet formed at the upper and lower portions of the fifth inner inlet portion to receive a wear prevention sealing, a fixing groove formed in an inner diameter of the wear prevention sealing, and a third through hole in the center;

In the fixing groove, a fixing part formed on an outer diameter is fixed, a first interview part is formed on the upper part, and a disc made of a second interview part is provided in the inner diameter, and two disks are formed in a pair, and a fourth penetration in the center. It consists of a sheet part in which a ball is formed.

The present invention relates to a mud gate valve, not a general gate valve, and is formed of a disk-shaped metal material and a rubber material fixing part, a first interview part, and a second interview part on the inner and outer diameters of the disk, so that the fluid and mud are efficiently treated. It has a sealable effect, and the structure is a single finished product that consists of stages, and it is easy to repair and replace parts, and most of the core technologies related to domestic high-value oil well drilling plants, ships, and offshore plants are owned by advanced overseas companies. In addition, it becomes the basis for the development of domestic drilling systems through localization and contributes to the domestic energy industry and exports, thereby increasing exports.

1 is a perspective view according to the present invention.
Figure 2 is a partial cut-away cross-sectional view according to the present invention.
3 is a plan view and a cross-sectional view of a handle moving part according to the present invention.
Figure 4 is a plan view and a state diagram of the vertical movement unit according to the present invention.
5 is a front view and a cross-sectional view of a gate according to the present invention.
6 is a plan view and a cross-sectional view of a screw housing according to the present invention.
7 is a plan view and a cross-sectional view of a cover according to the present invention.
8 is a plan view, a side view, and a cross-sectional view of a body according to the present invention.
9 is a front view, a rear view, and a cross-sectional view of the wear prevention member according to the present invention.
10 is a front view and a state view of the seat according to the present invention.
11 is a combined state diagram of a handle moving part, a vertical moving part, and a gate according to the present invention.
12 is a state diagram of a body, a wear-resistant member, and a seat portion according to the present invention.
13 is an exemplary state diagram according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In the description of the present invention, the defined terms are defined in consideration of functions in the present invention, which may vary according to the intention or custom of a technician engaged in the relevant field, so the definition is based on the contents throughout the present specification. It will have to be lowered.

A handle 10 in which the handle space 11 is formed;

A first through hole 21 is formed in the inner diameter of the handle space 11, a first threaded part 22 is formed in the center of the first through hole 21, and a second threaded part 23 is formed at the end of the outer diameter. A handle moving part 20 provided;

A vertical moving portion 30 having a first screw portion 31 formed at an upper outer diameter of the first screw portion 22 and a gate connecting portion 32 formed at a lower portion thereof;

A cylindrical gate 40 having a fixing groove 41 at an upper portion and an elliptical groove 42 formed at a lower portion to connect the gate connection portion 32;

The second threaded part 23 of the handle moving part 20 is interviewed with the 2-1 threaded part 51, and the upper part of the 2-1 threaded part 51 is provided in the first inner inlet 52, and the housing packing ( 53) is mounted, the second inner inlet 54 is formed in the lower part, the packing liter inner 56 with the first packing 55 is provided, and the cylindrical part 57 and the connecting hole 58 are formed in the outer diameter A screw housing 50 formed by extending a second through hole 59 in the center;

A first connection hole 61-1 is mounted in the connection hole 58, and a coupling hole 61 is formed on both sides of the first connection hole 61-1, and a third inner inlet 62 is formed in the center. It is provided with a buffer member 63 is mounted, an oval-shaped lower space portion 64 is formed at the lower portion, and a cover 60 provided with a second packing 65 at an outer diameter of the lower space portion 64;

The cover 60 is provided with a fourth inner inlet 71 formed in the center, a bolt coupling hole 75 is provided in the outer diameter, a gate space 72 is provided in the lower part, and a gate space 72 The body 70 is formed by passing through the inlet hole 73 to the left and right, and the fifth inner inlet portion 74 is formed between the inlet hole 73 and the gate space 72;

The fifth inner inlet 74 has a wear-resistant sealing inner inlet 81 formed at the upper and lower portions, and a wear-resistant seal 82 is mounted, and a fixing groove 83 is formed in the inner diameter of the other side of the wear-resistant seal 82, A wear preventing member 80 provided with a third through hole 84 in the center;

The fixing groove 83 is fixed with a fixing portion 91 formed on an outer diameter thereof, a first interview portion 92 is formed on the upper portion, and a disk 94 formed by having a second interview portion 93 on the inner diameter It is formed, and the disk 94 is formed in a pair of two, and consists of a sheet portion 90 in which a fourth through hole 95 is formed in the center.

The present invention is divided into a handle 10, a screw housing 50, a cover 60, and a body 70.

The handle 10 has a handle space part 11 formed to mount the handle moving part 20 as shown in FIG. 2, and the handle moving part 20 is mounted in the handle space part 11, The handle 101 is fixed to the handle inner hole 100 formed on the handle moving part 20.

In the case of the handle 10, the bar and the body of the handle are conventionally welded or cast, which makes it difficult to replace the bar and is not clean in appearance. I made it possible to do it.

A first screw part 22 is formed on the outer diameter of the handle moving part 20 to be fixed with the vertical moving part 30 as shown in FIG. 11, and the second screw part 23 formed on the lower outer diameter is the inner diameter of the screw housing 50. It is interviewed with the 2-1 threaded part 51 formed in. That is, when the handle 101 is rotated, the handle moving part 20 moves upward or downward by the 2-1 screw part 51 and the second screw part 23.

The inner diameter of the handle moving part 20 is formed with a first through hole 21 and a first threaded part 22, and the first threaded part 22 is in the 1-1 threaded part 31 of the vertical moving part 30. It is fixed, and a gate connection part 32 is formed under the upper and lower moving part 30 and is mounted in the fixing groove 41 formed on the upper part of the gate 40, and then the plate-shaped fixing clip 33 is folded and fixed,

The gate 40 is made of DD grade or higher material suitable for sour service in order to satisfy the standards of NACE MR0175, and is coated on alloy steel after heat treatment to increase surface strength as well as performance against corrosion. It was designed to satisfy.

Consisting of the above-described connection structure, when the handle moving part 20 moves upward and downward, the vertical moving part 30 and the gate 40 connected thereto move upward and downward to control the fluid and flow rate. will be.

On both sides of the gate 40, as shown in FIG. 10, the sheet portions 90 are interviewed, and the sheet portion 90 is formed of a pair of disks 94 made of a metal material having the same structure.

A first interview part 92 and a fixing part 91 are formed on the outer diameter of the disk 94, the first interview part 92 is made of a rubber material for sealing effect, and the fixing part 91 is It is to be fixed to the fixing groove 83 provided in the wear-preventing member 80, and a second interview portion 93 is formed in the inner diameter of the disk 94, so that when the gate 40 moves up and down, it is formed for sealing. will be. In addition, in the case of a general gate valve seat, it is used under 5000 psi when it is unified with a metal material or a rubber material, but the present invention is a metal base that holds the deformation of the seat in order to withstand a pressure of about 7500 psi due to the properties of a material such as mud ( A sheet portion 90 to which a metal base) is applied is used.

The seat portion 90 is designed to facilitate maintenance by being integrated with two discs 94 into one, and the disc 94 is formed of a stainless steel insert to provide corrosion resistance and abrasion resistance. great. Two fixing portions 91 and a second interview portion 93 with increased surface strength outside the disk 94 are formed to prevent damage to the seat, are resistant to corrosion, and are designed to extend the life of the valve.

As described above, the fixing part 91, the first interview part 92, and the second interview part 93 made of rubber are formed on the disc made of a metal material, so that the structure allows efficient sealing and opening/closing. .

The wear preventing member 80 has a third through hole 84 formed in the center, and the wear preventing sealing inner inlet 81 is formed in the outer diameter, so that the wear preventing sealing 82 is mounted, and the wear preventing member 80 Is fixed to the fifth inner inlet 74 formed in the body 70, the fourth inner inlet 71 and the gate space 72 are sequentially formed in the center of the body 70, and the gate space 72 ) Is formed through the inlet hole 73 in the lower part.

The screw housing 50 and the cover 60 are fixed with a first bolt B1 to a connection hole 58 formed in the screw housing 50 and a first connection hole 61-1 provided in the cover 60. .

The cover 60 has a third inner inlet 62 and a lower space 64 formed in the center, a buffer member 63 is mounted on the third inner inlet 62, and coupling holes 61 are provided on both sides of the cover 60. It is formed and fixed to the bolt coupling hole 75 of the body 70 using a second bolt B2, and a second packing is formed at the lower outer diameter.

In this implementation, when the handle 101 is rotated as shown in FIG. 13, the handle moving part 20 fixed to the handle 101 is also rotated, and the inner diameter of the handle moving part 20 has a first threaded part 22. ) Is formed, and the first screw part 22 is fixed to the first screw part 31 provided on the upper and lower moving part 30. A gate connection part 32 is provided under the vertical movement part 30 to be connected to the gate 40,

The handle moving part 20 is provided with a second threaded part 23 on the outer diameter of the screw housing 50 to make an interview with the 2-1 threaded part 51 formed on the outer diameter of the screw housing 50, and when the handle moving part 20 rotates, the screw housing It is moved upward or downward by the 2-1 screw part 51 of (50), so that the vertical moving part 30 connected to the handle moving part 20 moves upward or downward to control the flow rate. will be.

10 handles. 11 handle compartment.
20 handle moving part.
21 First through hole. 22 First thread. 23 Second thread.
30 Up and down moving parts.
31 1-1 Thread. 32 gate connection. 33 retaining clips.
40 gate.
41 Fixing groove. 42 elliptical groove.
50 screw housing.
51 Section 2-1 Thread. 52 No. 1 interior. 53 Housing packing.
54 Second interior. 55 No. 1 packing. 56 packing liter inner.
57 Cylindrical part. 58 Connector. 59 Second through hole.
60 covers.
61 Combination hole. 61-1 1st connecting hole. 62 3rd interior.
63 Absorption member. 64 lower space. 65 second packing.
70 body.
71 4th Interior. 72 gate space. 73 Inlet hole.
74 5th Interior. 75 bolt joint.
80 Anti-wear member.
81 Wear-resistant seal inlet. 82 Wear-resistant sealing. 83 Fixing groove.
84 3rd through hole.
90 seat part.
91 Fixed part. 92 First interview. 93 2nd interview.
94 negatives. 95 4th through hole.
B1 first bolt. B2 2nd bolt.

Claims (1)

A handle with a handle space portion formed thereon;
A handle moving portion having a first through hole formed in an inner diameter in the handle space portion, a first threaded portion formed in the center of the first through hole, and a second threaded portion provided at an end of the outer diameter;
A vertical moving portion having a first screw portion formed at an upper outer diameter of the first screw portion and a gate connecting portion formed at a lower portion thereof;
A cylindrical gate having a fixing groove at an upper portion to connect the gate connection portion and an elliptical groove portion at a lower portion thereof;
The second threaded part of the handle moving part is interviewed with the 2-1 threaded part, the upper part of the 2-1 threaded part is provided in the first inlet to mount the housing packing, and the second inlet is formed at the bottom to form the first packing A screw housing provided with a packing liter inner, a cylindrical portion and a connection hole formed at an outer diameter, and a second through hole extending at a center thereof;
A first connection hole is mounted in the connection hole, a coupling hole is formed on both sides of the first connection hole, a third inner inlet is provided in the center to mount a buffer member, and an elliptical lower space part is formed in the lower part, and the outer diameter of the lower space part There is a cover provided with a second packing;
The cover is provided with a fourth inner inlet formed in the center, a bolt coupling hole is provided in the outer diameter, a gate space is provided under the fourth inner inlet, and an inlet hole penetrates to the left and right of the gate space, and the inlet hole and the gate space are formed. A body having a fifth inner inlet portion formed therebetween;
The fifth inner inlet has a wear-resistant sealing inner inlet formed at the upper and lower portions, and a wear-resistant seal is mounted, and a fixing groove is formed in the inner diameter of the other side of the wear-resistant seal, and a wear-resistant member having a third through hole in the center;
In the fixing groove, a fixing part formed on an outer diameter is fixed, a first interview part is formed on the upper part, a disc made of a second interview part is provided in the inner diameter, and two disks are formed in a pair, and a fourth penetration is formed in the center. Mud gate valve for a crude oil and gas drilling plant, characterized in that consisting of; a seat portion formed with a ball.

Images