Combined type annular ram blowout preventer

Abstract

The utility model discloses a combined type annular flashboard blowout preventer, which relates to the field of blowout preventers and comprises a blowout preventer body, fixing pipes are symmetrically mounted at the top and the bottom of an inner cavity of the blowout preventer body, annular flashboard components are symmetrically and movably connected to two ends of opposite sides of the two fixing pipes, and a sliding frame is mounted on the side edge of the top of each annular flashboard component. Hydraulic cylinders are arranged at the two ends of each annular gate plate assembly, an adaptive groove is formed in the top of one annular gate plate assembly, and an adaptive plate is movably connected to the top of the other annular gate plate assembly. According to the combined type annular flashboard blowout preventer, through the arranged piston rod, when one annular flashboard assembly moves, the piston rod can enter an inner cavity of the other annular flashboard assembly, at the moment, the air bag can be inflated through the air pipe, the air bag can be expanded to drive the adaptive plate to move, and therefore the adaptive plate is driven to move; and after moving, the adaptive plate can enter the inner cavity of the adaptive groove, and at the moment, the sealing effect on the drill rod can be further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the blowout preventer field especially relates to a composite annular flashboard blowout preventer. BACKGROUND

[0002] When drilling oil, the blowout preventer needs to be installed on the wellhead drill pipe to control the high-pressure oil, gas and water blowout device. When the oil and gas pressure in the well is very high, the blowout preventer can close the wellhead. When the heavy mud is pressed into the drill pipe, there is a four-way valve under the flashboard, which can replace the mud affected by gas invasion and increase the pressure of the liquid column in the well to press the high-pressure oil and gas out.

[0003] When the annular flashboard blowout preventer is used to seal the drill pipe, the remaining structure is lacking to enhance the sealing effect of the drill pipe. When the sealing flashboard is damaged, it will seriously affect the sealing of the drill pipe.

[0004] Therefore, it is necessary to provide a composite annular flashboard blowout preventer to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The main purpose of the utility model is to provide a composite annular flashboard blowout preventer, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] A composite annular flashboard blowout preventer, comprising a blowout preventer body, a fixed pipe is symmetrically installed at the top and bottom of the inner cavity of the blowout preventer body, two annular flashboard assemblies are symmetrically and movably connected to the two ends of the opposite side of the fixed pipe, a sliding frame is installed on the side of the top of the annular flashboard assembly, a hydraulic cylinder is arranged at the two ends of the annular flashboard assembly, an adaptive groove is formed in the top of one annular flashboard assembly, and an adaptive plate is movably connected to the top of the other annular flashboard assembly.

[0008] Preferably, a sealing cover is arranged at the top of the blowout preventer body, a sealing bolt is installed at the top of the sealing cover, the sealing cover is connected with the blowout preventer body through the sealing bolt, oil injection holes are symmetrically formed at the two sides of the top of the sealing cover, and the oil injection holes are used to drive the hydraulic cylinders.

[0009] Preferably, driving blocks are symmetrically installed at the two ends of the two annular flashboard assemblies, guide rods are symmetrically installed at the two ends of the inner cavity of the blowout preventer body, and the driving blocks are sleeved on the outer walls of the guide rods.

[0010] Preferably, one end of the hydraulic cylinder is connected with one of the driving blocks, the hydraulic cylinder is connected with the other driving block through a hydraulic rod, and the two hydraulic cylinders are oppositely arranged.

[0011] Preferably, the guide plates are symmetrically arranged on both sides of the blowout preventer body, the rollers are symmetrically connected to the top and bottom of the sliding frame, and the rollers are symmetrically attached to the top and bottom of the guide plates.

[0012] Preferably, the piston rods are symmetrically arranged on the two ends of one ring-shaped gate assembly close to the other ring-shaped gate assembly, the air pipe is arranged in the inner cavity of the other ring-shaped gate assembly, the air pipe corresponds to the position of the piston rod, the piston rod is used for inflating the air pipe by extrusion, the air bag is arranged on the outer wall of the air pipe, and the air bag is movably connected in the inner cavity of the other ring-shaped gate assembly.

[0013] Compared with the prior art, the blowout preventer has the following beneficial effects:

[0014] 1. The composite ring-shaped gate blowout preventer can supply oil to the hydraulic cylinder through the oil inlet, separate the two ring-shaped gate assemblies through the driving block when the hydraulic cylinder is supplied with oil, and combine the two ring-shaped gate assemblies when the hydraulic cylinder is drained, so that the drilling rod can be sealed.

[0015] 2. The composite ring-shaped gate blowout preventer can further improve the stability of the movement of the ring-shaped gate assembly and prevent shaking.

[0016] 3. The composite ring-shaped gate blowout preventer can further improve the sealing effect of the drilling rod. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural diagram of the blowout preventer body inner cavity of the utility model;

[0018] Figure 2 is a structural diagram of the blowout preventer body inner cavity of the utility model;

[0019] Figure 3 is a structural diagram of the ring-shaped gate assembly of the utility model;

[0020] Figure 4 Figure 1 is a structure diagram of the adapter plate.

[0021] In the figure: 1, blowout preventer body; 2, sealing cover; 3, sealing bolt; 4, oil inlet; 5, fixed tube; 6, annular gate assembly; 7, guide plate; 8, sliding frame; 9, roller; 10, driving block; 11, hydraulic cylinder; 12, guide rod; 13, piston rod; 14, adapter slot; 15, adapter plate; 16, air pipe; 17, air bag. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0023] As shown in Figures 1-4 A composite annular gate blowout preventer, comprising a blowout preventer body 1, the top and bottom of the inner cavity of the blowout preventer body 1 are symmetrically provided with fixed tubes 5, the two ends of the opposite side of the two fixed tubes 5 are symmetrically movably connected with annular gate assemblies 6, the side edge of the top of the annular gate assembly 6 is provided with a sliding frame 8, the two ends of the annular gate assembly 6 are provided with hydraulic cylinders 11, the top of one annular gate assembly 6 is provided with an adapter slot 14, the top of the other annular gate assembly 6 is movably connected with an adapter plate 15, the top of the blowout preventer body 1 is provided with a sealing cover 2, the top of the sealing cover 2 is provided with a sealing bolt 3, the sealing cover 2 is connected with the blowout preventer body 1 through the sealing bolt 3, the two sides of the top of the sealing cover 2 are symmetrically provided with oil inlets 4, the two ends of the two annular gate assemblies 6 are symmetrically provided with driving blocks 10, the two ends of the inner cavity of the blowout preventer body 1 are symmetrically provided with guide rods 12, the driving block 10 is sleeved on the outer wall of the guide rod 12, one end of the hydraulic cylinder 11 is connected with one of the driving blocks 10, the hydraulic cylinder 11 is connected with the other driving block 10 through a hydraulic rod, the two hydraulic cylinders 11 are oppositely arranged, the two sides of the inner cavity of the blowout preventer body 1 are symmetrically provided with guide plates 7, the top and bottom of the inner cavity of the sliding frame 8 are rotatably connected with rollers 9, the opposite side of the two rollers 9 is symmetrically attached to the top and bottom of the guide plate 7, the sliding frame 8 is sleeved on the outer wall of the guide plate 7, the size of the adapter slot 14 and the adapter plate 15 is matched, the two ends of one annular gate assembly 6 close to the other annular gate assembly 6 are symmetrically provided with piston rods 13, the inner cavity of the other annular gate assembly 6 is provided with an air pipe 16, the position of the air pipe 16 corresponds to the position of the piston rod 13, the piston rod 13 is used for inflating the air pipe 16 by extrusion, the outer wall of the air pipe 16 is provided with an air bag 17, the air bag 17 is located at the side edge of the adapter plate 15, the air bag 17 is movably connected in the inner cavity of the other annular gate assembly 6;

[0024] The oil injection opening 4 is arranged, oil supply and oil extraction of the hydraulic cylinder 11 can be carried out, when the hydraulic cylinder 11 is supplied with oil, the two ring-shaped gate assemblies 6 can be separated by the driving block 10, when the hydraulic cylinder 11 is extracted, the two ring-shaped gate assemblies 6 can be combined, based on this, the drill rod can be sealed, the guide rod 12 is arranged, when the ring-shaped gate assembly 6 moves, the driving block 10 can move on the outer wall of the guide rod 12, based on this, the movement of the ring-shaped gate assembly 6 can be limited, and the hydraulic cylinder 11 cannot be offset and damaged, the sliding frame 8 and the roller 9 are arranged, when the ring-shaped gate assembly 6 moves, the outer wall of the guide plate 7 can be moved, based on this, the stability of the movement of the ring-shaped gate assembly 6 can be further improved, and shaking and other phenomena can not occur, the piston rod 13 is arranged, when one ring-shaped gate assembly 6 moves, the piston rod 13 can enter the inner cavity of the other ring-shaped gate assembly 6, at this time, the air bag 17 can be inflated by the air pipe 16, so that the air bag 17 can be expanded to drive the adaptive plate 15 to move, and the adaptive plate 15 can enter the inner cavity of the adaptive groove 14 after moving, at this time, the sealing effect of the drill rod can be further improved.

[0025] It should be noted that the utility model is a composite ring-shaped gate blowout preventer, when in use, the blowout preventer body 1 is connected with the drill rod through the fixing pipe 5, at this time, the ring-shaped gate assembly 6 is located at the top of the drill rod, when sealing is needed, the hydraulic cylinder 11 is extracted through the oil injection opening 4, at this time, the hydraulic cylinder 11 can drive the two ring-shaped gate assemblies 6 to combine through the driving block 10, at this time, the preliminary sealing of the drill rod is completed.

[0026] When one ring-shaped gate assembly 6 moves, the piston rod 13 can be inserted into the inner cavity of the other ring-shaped gate assembly 6, at this time, the air bag 17 can be inflated by the air pipe 16, after the air bag 17 is inflated, the adaptive plate 15 is ejected and enters the inner cavity of the adaptive groove 14, based on this, the complete sealing of the drill rod is completed.

[0027] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, the above examples and the description in the specification are only to illustrate the principle of the utility model, various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A composite annular gate blowout preventer, comprising a blowout preventer body (1), characterized in that: The top and bottom of the inner cavity of the blowout preventer body (1) are symmetrically equipped with fixed pipes (5). The two ends of the two fixed pipes (5) on opposite sides are symmetrically connected to annular gate assembly (6). A slide (8) is installed on the side of the top of the annular gate assembly (6). Hydraulic cylinders (11) are provided at both ends of the annular gate assembly (6). An adapter groove (14) is opened on the top of one annular gate assembly (6), and an adapter plate (15) is movably connected to the top of the other annular gate assembly (6).

2. The composite annular gate blowout preventer according to claim 1, characterized in that: The top of the blowout preventer body (1) is provided with a sealing cover (2), and a sealing bolt (3) is installed on the top of the sealing cover (2). The sealing cover (2) is connected to the blowout preventer body (1) through the sealing bolt (3). The top of the sealing cover (2) is symmetrically provided with oil inlets (4), and the oil inlets (4) are used to drive the hydraulic cylinder (11).

3. The composite annular gate blowout preventer according to claim 1, characterized in that: Two drive blocks (10) are symmetrically installed at both ends of the two annular gate assemblies (6), and guide rods (12) are symmetrically installed at both ends of the inner cavity of the blowout preventer body (1). The drive blocks (10) are sleeved on the outer wall of the guide rods (12).

4. The composite annular gate blowout preventer according to claim 3, characterized in that: One end of the hydraulic cylinder (11) is connected to one of the drive blocks (10), and the hydraulic cylinder (11) is connected to the other drive block (10) through a hydraulic rod. The two hydraulic cylinders (11) are arranged in opposite directions.

5. A composite annular gate blowout preventer according to claim 1, characterized in that: Guide plates (7) are symmetrically installed on both sides of the inner cavity of the blowout preventer body (1). Rollers (9) are symmetrically rotatably connected to the top and bottom of the inner cavity of the slide (8). The two rollers (9) are symmetrically attached to the top and bottom of the guide plate (7) on opposite sides. The slide (8) is sleeved on the outer wall of the guide plate (7).

6. A composite annular gate blowout preventer according to claim 1, characterized in that: The sizes of the adapter groove (14) and the adapter plate (15) are matched. One of the annular gate assembly (6) has piston rods (13) symmetrically installed at both ends near the other annular gate assembly (6). An air tube (16) is installed in the inner cavity of the other annular gate assembly (6). The air tube (16) is positioned corresponding to the piston rod (13). The piston rod (13) is used to inflate the air tube (16) by squeezing. An air bladder (17) is installed on the outer wall of the air tube (16). The air bladder (17) is located on the side of the adapter plate (15). The air bladder (17) is movably connected to the inner cavity of the other annular gate assembly (6).

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