A gate rubber core

Abstract

The utility model discloses a gate rubber core, which includes: a gate body, a front rubber component and a top rubber component are arranged on the gate body, the front rubber component includes a front colloid, a semi-ring R groove, a top block, a side block, a clamp, a fixing pin and a bolt, a semi-ring R groove is arranged on the front colloid, the top of the front colloid is fixedly connected with a top block, the top block is arc-shaped, and the left and right side walls of the front colloid are fixedly connected with side blocks, the side blocks are arc-shaped. By arranging the front colloid, the semi-ring R groove, the top block, the side block, the clamp, the fixing pin, the bolt, the top colloid, the card slot and the rubber column, the top and side of the front colloid are arranged in an arc shape, and the sealing performance between the top of the front colloid and the upper chamber of the blowout preventer is improved by cooperating with the top colloid below, and a fixing pin is arranged on the front side wall of the front colloid, so that the front colloid can be directly drawn out from the blowout preventer, which is convenient for the disassembly and maintenance of the front colloid.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber sealing, in particular to a gate rubber core. Background Art

[0002] Blowout preventer is the most important well control device, which plays an important role in drilling, especially in underbalanced drilling. The purpose of designing blowout preventer is to close the wellbore under pressure, maintain continuous control of the well, and circulate the formation fluid entering the well. There are two main types of hydraulic blowout preventer: gate blowout preventer and annular blowout preventer. Gate blowout preventer is mainly composed of shell, side door, oil cylinder, cylinder head, piston, piston rod, locking shaft, seal, gate, etc. Its working process is to use hydraulic pressure to push the piston to drive the gate to close or open, thereby closing or opening the wellhead to achieve the purpose of sealing or opening the well.

[0003] The gate rubber core is installed in the gate of the blowout preventer as a seal. It is divided into the front rubber core component and the top rubber core component. It is in direct contact with the drill bit and participates in the sealing. The gate rubber core is the most core component of the blowout preventer gate and is also a wearing part. The part of the gate rubber core that wears is the semi-ring R groove that contacts the drill pipe. The performance of the semi-ring R groove material determines the performance of the gate rubber core.

[0004] The top of the main colloid of the traditional front rubber core component is flat, and the sealed upper chamber of the blowout preventer can only be flat, resulting in poor sealing performance on the top and easy wear, which reduces the service life of the front rubber core component. In addition, the traditional front rubber core and the blowout preventer gate are directly fixed by bolts, which causes the front colloid to easily adhere to the blowout preventer gate, which is not only inconvenient to disassemble and assemble, but also very troublesome to maintain. Utility Model Content

[0005] The utility model aims to provide a gate rubber core, wherein the top and side of the front colloid are both arranged in an arc shape, which cooperates with the top colloid below to improve the sealing performance between the top of the front colloid and the upper chamber of the blowout preventer, and a fixing pin is arranged on the front side wall of the front colloid, so that the front colloid can be directly drawn out from the gate of the blowout preventer, and the disassembly and maintenance of the front colloid are convenient.

[0006] To achieve the above-mentioned purpose, a gate rubber core is provided, comprising: a gate body, a front rubber component and a top rubber component are arranged on the gate body, the front rubber component comprises a front rubber body, a semi-ring R groove, a top block, a side block, a clamping plate, a fixing pin and a bolt, the front rubber body is provided with a semi-ring R groove, the top of the front rubber body is fixedly connected with a top block, the top block is arc-shaped, the left and right side walls of the front rubber body are fixedly connected with side blocks, the side blocks are arc-shaped, the front and rear side walls of the front rubber body are fixedly connected with clamping plates, the number of which is provided with two, and the clamping plates are located inside the front rubber body, a fixing pin is arranged in front of the front clamping plate, the fixing pin is semicircular, the fixing pin is threaded with a bolt, the number of which is provided with two.

[0007] According to the gate rubber core, the top rubber assembly includes a top rubber body, a slot and a rubber column. The top rubber body is semi-annular and is provided with a slot. Both ends of the top rubber body are fixedly connected with rubber columns. There are two rubber columns, which are symmetrically arranged on the left and right.

[0008] According to the gate rubber core, the front rubber body is located above the rubber column.

[0009] According to the gate rubber core, the number of the top blocks is two and they are symmetrically distributed on the left and right sides of the semi-ring R groove.

[0010] According to the gate rubber core, the number of the side blocks is two and they are symmetrically distributed on the left and right side walls of the front colloid.

[0011] According to the gate rubber core, the front colloid, the top block and the side blocks are all made of rubber material and are integrally formed.

[0012] The above scheme has the beneficial effects that the top and side of the front colloid are arranged into an arc shape by arranging the front colloid, the semi-ring R groove, the top block, the side block, the clamping plate, the fixing pin, the bolt, the top colloid, the slot and the colloid column, so as to cooperate with the top colloid below to improve the sealing performance between the top of the front colloid and the upper chamber of the blowout preventer, and a fixing pin is arranged on the front side wall of the front colloid, so that the front colloid can be directly pulled out from the blowout preventer, which is convenient for disassembly, assembly and maintenance of the front colloid.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 This is a front view of a gate rubber core of the utility model;

[0016] Figure 2 This is a diagram of the front rubber component of a gate rubber core of the utility model;

[0017] Figure 3 This is a top rubber component diagram of a gate rubber core of the utility model;

[0018] Figure 4 The utility model is a bottom structural diagram of a top rubber component of a gate rubber core.

[0019] Legend:

[0020] 1. Front rubber assembly; 101. Front rubber body; 102. Semi-ring R groove; 103. Top block; 104. Side block; 105. Clamp; 106. Fixing pin; 107. Bolt;

[0021] 2. Top glue assembly; 201. Top glue body; 202. Card slot; 203. Glue column. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] Reference Figure 1-4, the utility model embodiment of a gate rubber core, which includes: a gate body, a front rubber component 1 and a top rubber component 2 are arranged on the gate body, the front rubber component 1 includes a front colloid 101, a semi-annular R groove 102, a top block 103, a side block 104, a clamping plate 105, a fixing pin 106 and a bolt 107, a semi-annular R groove 102 is arranged on the front colloid 101, and a top block 103 is fixedly connected to the top of the front colloid 101, and the top block 103 is arc-shaped. There are two top blocks 103, and they are symmetrically distributed on the left and right sides of the semi-annular R groove 102. The top of the top block 103 is arc-shaped, and the upper chamber of the blowout preventer is also matched to be arc-shaped (not shown in the figure), and the two are tightly fitted. Compared with the traditional plane seal, the sealing performance is better, and the left and right side walls of the front colloid 101 are fixedly connected to the side Block 104, the side block 104 is arc-shaped, the number of side blocks 104 is set to two, and they are symmetrically distributed on the left and right side walls of the front colloid 101, the front colloid 101, the top block 103 and the side blocks 104 are all made of rubber material and are integrally formed to improve the overall sealing and stability of the rubber core, the front and rear side walls of the front colloid 101 are fixedly connected with a clamping plate 105, the number of the clamping plates 105 is set to two, and they are located inside the front colloid 101, and a fixing pin 106 is set in front of the front clamping plate 105, the fixing pin 106 is semicircular, and a bolt 107 is threadedly connected to the fixing pin 106, the number of the bolt 107 is set to two, and the bolt 107 fixes the fixing pin 106, the clamping plate 105 and the front colloid 101 together, and the fixing pin 106 is clamped inside the gate of the blowout preventer.

[0024] The top glue assembly 2 includes a top glue body 201, a slot 202 and a glue column 203. The top glue body 201 is semi-annular and is clamped with the blowout preventer. The top glue body 201 is provided with a slot 202. Both ends of the top glue body 201 are fixedly connected with glue columns 203. There are two glue columns 203, which are symmetrically arranged on the left and right. The front glue body 101 is located above the glue column 203.

[0025] Working principle: fit two clamps 105 on the front rubber body 101 and fix them with fixing pins 106 and bolts 107, push the front rubber assembly 1 into the gate of the blowout preventer, and clamp the top rubber assembly 2 inside the gate and below the front rubber assembly 1, so that the top block 103 fits tightly with the upper chamber of the blowout preventer to form a seal. When disassembly and maintenance are required, pull the front rubber assembly 1 out of the gate and loosen the bolts 107.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A gate rubber core, comprising: The gate body is characterized in that a front rubber component (1) and a top rubber component (2) are arranged on the gate body, the front rubber component (1) comprises a front rubber body (101), a semi-ring R groove (102), a top block (103), a side block (104), a clamping plate (105), a fixing pin (106) and a bolt (107), the front rubber body (101) is provided with a semi-ring R groove (102), the top of the front rubber body (101) is fixedly connected with a top block (103), the top block (103) is arc-shaped, and the front rubber body (101) is provided with a semi-ring R groove (102). 1) are fixedly connected to the left and right side walls thereof, the side blocks (104) are arc-shaped, the front and rear side walls of the front colloid (101) are fixedly connected to clamping plates (105), there are two clamping plates (105) located inside the front colloid (101), a fixing pin (106) is arranged in front of the front clamping plate (105), the fixing pin (106) is semicircular, a bolt (107) is threadedly connected to the fixing pin (106), there are two bolts (107).

2. A gate rubber core according to claim 1, characterized in that: The top glue assembly (2) comprises a top glue body (201), a slot (202) and a glue column (203); the top glue body (201) is semi-annular, the slot (202) is provided on the top glue body (201), and the two ends of the top glue body (201) are fixedly connected with glue columns (203); the number of the glue columns (203) is two and they are symmetrically arranged on the left and right.

3. A gate rubber core according to claim 2, characterized in that: The front colloid (101) is located above the colloid column (203).

4. A gate rubber core according to claim 1, characterized in that: The number of the top blocks (103) is two and they are symmetrically distributed on the left and right sides of the semi-ring R groove (102).

5. The gate rubber core according to claim 1, characterized in that: The number of the side blocks (104) is two and they are symmetrically distributed on the left and right side walls of the front colloid (101).

6. A gate rubber core according to claim 1, characterized in that: The front colloid (101), the top block (103) and the side block (104) are all made of rubber and are integrally formed.

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