A gate blowout preventer without side door bolts

Abstract

The invention discloses a gate blowout preventer without side door bolts, comprising: a first fixing block is provided on both sides of a shell; a guide rod is fixed on one side of the shell connected with the side door, the side door is sleeved on the outside of the guide rod and moves along the guide rod; a second fixing block is provided on the side of the side door close to the shell; a claw block is placed between the side door and the shell, and is arranged at the side of the second fixing block; a waist-shaped hole is provided on the side of the claw block close to the shell, the waist-shaped hole is arranged along the length direction of the guide rod and passes through the claw block; a claw block beam is penetrated in the waist-shaped hole, and the two ends of the claw block beam are placed outside the waist-shaped hole; claw block beam grooves are provided at positions corresponding to the shell, the side door and the claw block beam, the two ends of the claw block beam are respectively plugged into the claw block beam grooves of the shell and the side door, and the end of the claw block beam is fixed in the claw block beam groove of the side door; a claw block bolt is connected to the side of the claw block away from the second fixing block. The blowout preventer in the invention is simple to operate, and the side door can be opened and closed quickly.

Description

Technical Field

[0001] The invention relates to the technical field of blowout preventers, and more particularly to a blowout preventer without side door bolts. Background Art

[0002] The gate blowout preventer is an important wellhead safety device in drilling and well repair operations. During the drilling and well repair process, when the drilling tools in the well change, the gate specifications need to be replaced to match the drilling tools in the well. At this time, the side door of the blowout preventer needs to be opened on site, and the gate needs to be replaced and then the side door needs to be closed. The blowout preventer and the side door are usually connected by a set of bolts. The side door bolts of the large-diameter, high-pressure blowout preventer are very heavy, making it very difficult to disassemble and install the bolts on site. The workers have high labor intensity, long time consumption, and a harsh working environment, which is prone to safety accidents.

[0003] In order to solve the problem of difficulty in disassembling and assembling the side door bolts, some new structures have appeared in the side door connection of the gate blowout preventer. The new structure adopts a boltless connection method, mainly including several common structures such as turn pin type, latch type, tooth plate type, etc. At present, these new structures also have the following prominent problems: First, these connection methods need to use the matching surfaces of the shell and the side door to replace the bolt force, which leads to a lot of increase in structural size and weight. The increase in the weight of the blowout preventer increases the manufacturing cost, and the transportation, installation and user maintenance of the blowout preventer will increase the difficulty accordingly; second, the structure is complicated. When the side door is opened, foreign matter such as cuttings in the drilling fluid can easily enter the meshing mechanism and is difficult to clean, thereby causing new faults.

[0004] Therefore, a problem that needs to be solved urgently by those skilled in the art is to develop a gate blowout preventer without side door bolts that is simple to operate and can be opened and closed quickly. Summary of the invention

[0005] In view of this, the present invention provides a gate blowout preventer without side door bolts, which is simple to operate and can be opened and closed quickly.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A gate blowout preventer without side door bolts, comprising:

[0008] A shell, wherein first fixing blocks are provided on both sides of the shell, and the side surfaces of the first fixing blocks are inclined;

[0009] Side doors, the side doors are arranged on two side surfaces of the shell, a guide rod is fixed to one side of the shell connected to the side door, the side door is sleeved on the outside of the guide rod and moves along the guide rod; a second fixing block is arranged on one side of the side door close to the shell; the side surface of the second fixing block is inclined and has the same shape as the first fixing block;

[0010] A claw block, wherein a plurality of claw blocks are provided, and the claw block is placed between the side door and the shell, and is arranged at the side of the second fixed block; a waist-shaped hole is opened on the side of the claw block close to the shell, and the waist-shaped hole is arranged along the length direction of the guide rod and passes through the claw block;

[0011] A claw block beam, the claw block beam is passed through the waist-shaped hole, and the two ends of the claw block beam are placed outside the waist-shaped hole; the shell, the side door and the claw block beam are provided with claw block beam grooves at positions corresponding to the claw block beam, the two ends of the claw block beam are respectively inserted into the claw block beam grooves of the shell and the side door, and the end of the claw block beam is fixed in the claw block beam groove of the side door; a claw block bolt is connected to the side of the claw block away from the second fixed block, and the claw block bolt extends into the interior of the claw block and is fixedly connected to the claw block beam.

[0012] The beneficial effect of adopting the above technical solution is that the claw block beam is connected to the side door in the present invention. When closing the side door and the shell, the side door is first contacted with the shell, and then the claw block is fixed by the claw block bolt. When the side door needs to be opened, the claw block bolt can be opened, and the side door can be opened and closed conveniently and quickly. The operation is simple, fast and efficient.

[0013] Preferably, the first fixing block and the second fixing block are parallelogram-shaped and symmetrically distributed along the horizontal plane where the center line of the shell is located. The first fixing block and the second fixing block are consistent in shape and size, which can ensure that the claw block can accurately tighten and fix the first fixing block and the second fixing side surface.

[0014] Preferably, the first fixing block and the second fixing block are both provided with a first tooth groove on their sides, and the claw block is provided with a second tooth groove on one side in contact with the first tooth groove, and the first tooth groove and the second tooth groove are meshed with each other. The first tooth groove and the second tooth groove can not only enable the claw block to better fix the side door and the housing, but also prevent the accumulation of drilling fluid and cuttings, thereby improving the reliability of the blowout preventer.

[0015] Preferably, the claw block has lugs on both sides of the waist-shaped hole, and the side door and the shell have lug grooves at positions corresponding to the lugs, and the lugs are placed in the lug grooves. When the side door and the shell are closed, the lugs connect and limit the side door and the shell.

[0016] Preferably, a protrusion is provided at the position where the claw block beam is connected to the claw block bolt, the protrusion is nested in the surface of the claw block beam, and the end surface where the protrusion is connected to the claw block bolt is a plane, and the claw block bolt is threadedly connected to the protrusion.

[0017] Preferably, a flange is provided on the outer surface of the claw block bolt, and a bolt washer is provided on the side of the flange close to the claw block beam, and the bolt washer abuts between the flange and the claw block. The bolt washer acts as a force transmission component between the claw block and the claw block bolt, filling the middle hole of the claw block, so that the rotational friction resistance can be reduced when the rotating claw block bolt drives the claw block to move inward.

[0018] Preferably, a retaining ring is fixed in the hole where the claw block is connected to the claw block bolt, the retaining ring is located on the side of the flange away from the claw block beam, and a bolt retaining ring is provided between the retaining ring and the flange. When the claw block bolt is rotated in the opposite direction to cause the claw block to move outward, the retaining ring is fixed in the hole of the claw block as a force transmission component, and the bolt retaining ring is used as an intermediate component to separate the claw block bolt and the retaining ring, which can reduce the friction resistance when the claw block bolt is rotated.

[0019] Preferably, the width of the cross section of the waist-shaped hole is equal to the width of the cross section of the claw block beam, so as to facilitate the horizontal movement of the claw block beam in the waist-shaped hole and prevent the claw block beam from rotating in the waist-shaped hole.

[0020] It can be seen from the above technical solution that, compared with the prior art, the present invention discloses a gate blowout preventer without side door bolts, which has the following beneficial effects:

[0021] (1) The side door can be opened and closed quickly by setting the claw block, which is simple, fast and efficient to operate;

[0022] (2) The structure in which the side door and the shell are fixed by claw blocks is compact, which is convenient for transportation, installation and use of the blowout preventer;

[0023] (3) The first tooth groove and the second tooth groove are arranged in an inclined shape to prevent the accumulation of drilling fluid and cuttings, thereby improving the reliability of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 It is a structural explosion diagram of one angle of the blowout preventer when the side door provided by the present invention is in an open state;

[0026] Figure 2 This is a structural explosion diagram of the blowout preventer from another angle when the side door provided by the present invention is in an open state;

[0027] Figure 3This is a schematic structural diagram of the blowout preventer provided by the present invention when the side door is in a closed state.

[0028] Among them, in the figure,

[0029] 1- housing;

[0030] 11- first fixing block;

[0031] 2-Side door;

[0032] 21- second fixing block;

[0033] 3-Guide rod;

[0034] 4-claw block;

[0035] 41-waist hole; 42-second tooth groove; 43-lug;

[0036] 5-claw block beam;

[0037] 51-bump;

[0038] 6-claw block beam slot;

[0039] 7-claw block bolt;

[0040] 71- flange;

[0041] 8-first tooth groove; 9-lug groove; 010-bolt washer; 011-bolt retaining ring; 012-retaining ring; 013-screw. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The embodiment of the present invention discloses a gate blowout preventer without side door bolts, comprising:

[0044] The housing 1 has first fixing blocks 11 on both sides of the housing 1, and the sides of the first fixing blocks 11 are inclined;

[0045] Side door 2, side door 2 is arranged on two side surfaces of housing 1, a guide rod 3 is fixed on one side where housing 1 is connected to side door 2, side door 2 is sleeved on the outside of guide rod 3 and moves along guide rod 3; a second fixing block 21 is arranged on one side of side door 2 close to housing 1; the side surface of second fixing block 21 is inclined and has the same shape as first fixing block 11;

[0046] The claw block 4 is provided with a plurality of claw blocks 4, which are placed between the side door 2 and the housing 1 and arranged at the side of the second fixed block 21; a waist-shaped hole 41 is opened on the side of the claw block 4 close to the housing 1, and the waist-shaped hole 41 is arranged along the length direction of the guide rod 3 and passes through the claw block 4;

[0047] The claw block beam 5 is inserted into the waist-shaped hole 41, and the two ends of the claw block beam 5 are placed outside the waist-shaped hole 41; the housing 1, the side door 2 and the claw block beam 5 are provided with claw block beam grooves 6 at positions corresponding to the claw block beam 5, and the two ends of the claw block beam 5 are respectively inserted into the claw block beam grooves 6 of the housing 1 and the side door 2, and the end of the claw block beam 5 is fixed in the claw block beam groove 6 of the side door 2; the claw block 4 is connected to a claw block bolt 7 on the side away from the second fixed block 21, and the claw block bolt 7 extends into the interior of the claw block 4 and is fixedly connected to the claw block beam 5. The claw block bolt 7 can limit the position of the claw block beam 5 in the waist-shaped hole 41, so that the claw block beam 5 can lock the side door 2.

[0048] In order to further optimize the above technical solution, the first fixing block 11 and the second fixing block 21 are in the shape of a parallelogram and are symmetrically distributed along the horizontal plane where the center line of the housing 1 is located.

[0049] In order to further optimize the above technical solution, the first fixed block 11 and the second fixed block 21 are both provided with a first tooth groove 8 on their sides, and the claw block 4 is provided with a second tooth groove 42 on the side in contact with the first tooth groove 8, and the first tooth groove 8 and the second tooth groove 42 are meshed. When the side door 2 is closed, the second tooth groove 42 of the claw block 4 is meshed with the first tooth groove 8 on the side of the first fixed block 11 and the second fixed block 21 at the same time.

[0050] In order to further optimize the above technical solution, the claw block 4 has lugs 43 on both sides of the waist-shaped hole 41 , and lug grooves 9 are opened at positions corresponding to the side door 2 and the shell 1 and the lugs 43 , and the lugs 43 are placed in the lug grooves 9 .

[0051] In order to further optimize the above technical solution, a protrusion 51 is provided at the position where the claw block beam 5 is connected to the claw block bolt 7. The protrusion 51 is embedded in the surface of the claw block beam 5, and the end surface where the protrusion 51 is connected to the claw block bolt 7 is a plane, and the claw block bolt 7 is threadedly connected to the protrusion 51.

[0052] In order to further optimize the above technical solution, a flange 71 is provided on the outer surface of the claw block bolt 7 , and a bolt washer 010 is provided on the side of the flange 71 close to the claw block beam 5 , and the bolt washer 010 abuts between the flange 71 and the claw block 4 .

[0053] In order to further optimize the above technical solution, a retaining ring 012 is fixed in the hole where the claw block 4 is connected to the claw block bolt 7. The retaining ring 012 is located on the side of the flange 71 away from the claw block beam 5, and a bolt retaining ring 011 is provided between the retaining ring 012 and the flange. When the side door 2 is opened, the claw block bolt 7 is rotated in the reverse direction. Due to the blocking effect of the retaining ring 012 on the flange 71, the claw block bolt 7 will drive the claw block 4 to move outward together until the claw block 4 is completely released from locking the side door 2 and the housing 1.

[0054] In order to further optimize the above technical solution, the width of the cross section of the waist-shaped hole 41 is equal to the width of the cross section of the claw block beam 5. The size of the waist-shaped hole 41 is larger than the size of the claw block beam 5, which can ensure that the claw block beam 5 can move in the waist-shaped hole 41 when the side door 2 is fitted with the shell 1.

[0055] In order to further optimize the above technical solution, one end of the claw block beam 5 close to the side door 2 is fixed to the side door 2 by means of a screw 013, and the screw 013 is penetrated from the surface of the side door 2 into the interior of the claw block beam 5 for fixing.

[0056] Working process:

[0057] When the side door 2 needs to be opened, the claw block bolt 7 is screwed outward, and the claw block bolt 7 pushes the claw block 4 to move horizontally outward through the bolt retaining ring 011 and the retaining ring 012 until the waist-shaped hole 41 of the claw block 4 contacts the claw block beam 5. At this time, the second tooth groove 42 of the claw block 4 and the first tooth groove 8 of the side door and the housing are completely separated; at this time, the hydraulic pressure can be operated to open the side door 2 to complete the operation of replacing the gate plate;

[0058] When closing the side door, the hydraulic pressure is operated to close the side door 2. At this time, the side door 2 and the shell 1 are in a fitted state; and the claw block bolt 7 is screwed inward. The claw block bolt 7 passes through the bolt washer 010 to push the claw block 4 to move horizontally inward until the second tooth groove 42 of the claw block 4 is engaged with the first tooth groove 8 of the side door and the shell. At this time, the closing operation of the side door 2 is completed, and the blowout preventer returns to a normal working state.

[0059] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0060] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gate blowout preventer without side door bolts, characterized in that: include: A shell (1), wherein first fixing blocks (11) are provided on both side surfaces of the shell (1), and the side surfaces of the first fixing blocks (11) are inclined; A side door (2), the side door (2) being arranged on two side surfaces of the shell (1); a guide rod (3) being fixed on one side of the shell (1) connected to the side door (2); the side door (2) being sleeved on the outside of the guide rod (3) and moving along the guide rod (3); a second fixing block (21) being arranged on the side of the side door (2) close to the shell (1); the side surface of the second fixing block (21) being inclined and having the same shape as the first fixing block (11); A claw block (4), wherein a plurality of claw blocks (4) are provided, and the claw block (4) is placed between the side door (2) and the shell (1), and is arranged on the side of the second fixed block (21); a waist-shaped hole (41) is opened on the side of the claw block (4) close to the shell (1), and the waist-shaped hole (41) is arranged along the length direction of the guide rod (3) and passes through the claw block (4); A claw block beam (5), the claw block beam (5) is inserted into the waist-shaped hole (41), and the two ends of the claw block beam (5) are placed outside the waist-shaped hole (41); the shell (1), the side door (2) and the claw block beam (5) are all provided with claw block beam grooves (6) at positions corresponding to the shell (1), the side door (2) and the claw block beam (5), the two ends of the claw block beam (5) are respectively inserted into the claw block beam grooves (6) of the shell (1) and the side door (2), and the end of the claw block beam (5) is fixed in the claw block beam groove (6) of the side door (2); a claw block bolt (7) is connected to the side of the claw block (4) away from the second fixing block (21), and the claw block bolt (7) extends into the interior of the claw block (4) and is fixedly connected to the claw block beam (5).

2. A gate blowout preventer without side door bolts according to claim 1, characterized in that: The first fixing block (11) and the second fixing block (21) are in the shape of a parallelogram and are symmetrically distributed along a horizontal plane where the center line of the housing (1) is located.

3. A gate blowout preventer without side door bolts according to claim 1 or 2, characterized in that: The side surfaces of the first fixing block (11) and the second fixing block (21) are both provided with a first tooth groove (8), the side of the claw block (4) in contact with the first tooth groove (8) is provided with a second tooth groove (42), and the first tooth groove (8) and the second tooth groove (42) are meshed with each other.

4. A gate blowout preventer without side door bolts according to claim 3, characterized in that: The claw block (4) is provided with lugs (43) on both sides of the waist-shaped hole (41), and lug grooves (9) are provided at positions corresponding to the lugs (43) on the side door (2) and the shell (1), and the lugs (43) are placed in the lug grooves (9).

5. A gate blowout preventer without side door bolts according to any one of claims 1, 2 or 4, characterized in that: A protrusion (51) is provided at the position where the claw block beam (5) is connected to the claw block bolt (7); the protrusion (51) is embedded in the surface of the claw block beam (5); the end surface where the protrusion (51) is connected to the claw block bolt (7) is a plane; the claw block bolt (7) is threadedly connected to the protrusion (51).

6. A gate blowout preventer without side door bolts according to claim 5, characterized in that: The outer surface of the claw block bolt (7) is provided with a flange (71), and a bolt washer (010) is provided on the side of the flange (71) close to the claw block beam (5), and the bolt washer (010) abuts between the flange (71) and the claw block (4).

7. A gate blowout preventer without side door bolts according to claim 6, characterized in that: A retaining ring (012) is fixed in the hole through which the claw block (4) is connected to the claw block bolt (7); the retaining ring (012) is located on the side of the flange (71) away from the claw block beam (5), and a bolt retaining ring (011) is provided between the retaining ring (012) and the flange.

8. A gate blowout preventer without side door bolts according to claim 1, characterized in that: The width of the cross section of the waist-shaped hole (41) is equal to the width of the cross section of the claw block beam (5).

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