CN210217686U - Blowout prevention fixed valve - Google Patents
Blowout prevention fixed valve Download PDFInfo
- Publication number
- CN210217686U CN210217686U CN201920774863.2U CN201920774863U CN210217686U CN 210217686 U CN210217686 U CN 210217686U CN 201920774863 U CN201920774863 U CN 201920774863U CN 210217686 U CN210217686 U CN 210217686U
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- blowout prevention
- blowout
- valve seat
- connecting pipe
- valve
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Abstract
A blowout-preventing fixed valve. The main solution is that the profit in the tubular column can return ground and the problem of polluted environment when the tubular column is being gone down to current tubular oil-well pump. The method is characterized in that: a blowout prevention support (5) is arranged in the upper connector (1), a connecting pipe (11) protruding upwards is arranged at the center of the blowout prevention support (5), the upper part of the connecting pipe (11) is connected with a blowout prevention cap (2), the blowout prevention cap (2) and the inner part of the upper connector (1) are in clearance seal, the top surface of the blowout prevention cap (2) is conical, and a plurality of radial liquid passing grooves (10) are formed in the top surface; the bottom of the blowout prevention support (5) is provided with a pressing ring (6), the bottom of the pressing ring (6) is provided with a valve seat (8), the upper part of the valve seat (8) is provided with a valve ball (7), and the bottom of the valve ball (7) is in sealing fit with the top of the valve seat (8). The blowout prevention fixed valve can prevent oil and water in the pipe column from returning to the ground when the pipe column is lowered, and environment pollution is avoided.
Description
Technical Field
The utility model relates to an oil field, a prevent spouting fixed valve specifically says so.
Background
In the process of underground operation construction of an oil field, because the fixed valve of the tubular oil well pump is in a single-flow mode, oil and water in a tubular column can return to the ground when the tubular column is lowered, and environmental pollution is caused.
SUMMERY OF THE UTILITY MODEL
In order to overcome the profit in the tubular column of current tubular oil-well pump when the lower tubular column can return ground and the not enough of polluted environment, the utility model provides a prevent spouting fixed valve, the profit in the tubular column when this prevent spouting fixed valve can avoid the lower tubular column returns ground, avoids the polluted environment.
The technical scheme of the utility model is that: a blowout prevention fixed valve comprises an upper connector and a lower connector, wherein the upper connector and the lower connector are connected through threads, a blowout prevention support is arranged in the upper connector, a connecting pipe which protrudes upwards is arranged at the center of the blowout prevention support, the upper part of the connecting pipe is connected with a blowout prevention cap, the blowout prevention cap and the inner part of the upper connector are in clearance seal, the top surface of the blowout prevention cap is conical, and a plurality of radial liquid passing grooves are formed in the top surface; the bottom of the blowout prevention support is provided with a pressing ring, the bottom of the pressing ring is provided with a valve seat, the upper part of the valve seat is provided with a valve ball, and the lower part of the valve ball is in sealing fit with the top of the valve seat.
A circumferential groove is formed in the inner wall of the bottom of the blowout prevention cap, a locking ring is arranged in the groove, and a screw thread matched with the locking ring is arranged on the outer wall of the middle of the connecting pipe; and the connecting pipe is connected with the blowout prevention cap through a safety pin.
The valve seat is arranged in the lower joint, and a sealing ring is arranged between the valve seat and the lower joint.
Through holes are formed in the periphery of the connecting pipe on the blowout prevention support.
The utility model discloses following beneficial effect has: by adopting the scheme, when the tubular column is lowered, the meshing surface between the blowout-preventing cap and the inner part of the upper joint is in clearance seal, so that the tubular column is in a blowout-preventing state in the process of lowering the well, oil and water in the annular space of the oil sleeve are prevented from entering the tubular column and returning to the ground, and liquid in the well is prevented from being sprayed upwards.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1-an upper connector, 2-a blowout prevention cap, 3-a safety pin, 4-a locking ring, 5-a blowout prevention bracket, 6-a pressing ring, 7-a valve ball, 8-a valve seat, 9-a lower connector, 10-a liquid passing groove and 11-a connecting pipe.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, the blowout prevention fixed valve comprises an upper joint 1 and a lower joint 9, wherein the upper joint 1 is connected with the lower joint 9 through threads, the lower joint 9 is arranged inside the upper joint 1, and the lower joint 9 protrudes out of the upper joint 1. The middle part of the inner wall of the upper joint 1 is provided with a convex step, the lower part of the step is provided with a blowout prevention support 5, the center of the blowout prevention support 5 is provided with a connecting pipe 11 which protrudes upwards, and the periphery of the connecting pipe 11 is provided with a plurality of axial through holes. The upper part of the connecting pipe 11 is connected with a blowout prevention cap 2, the blowout prevention cap 2 is connected inside the upper joint 1, a gap is sealed between the blowout prevention cap 2 and the upper joint 1, and the top of the blowout prevention cap 2 is propped against a step of the upper joint 1. The top surface of the blowout prevention cap 2 is a cone with a convex middle part, and a plurality of radial liquid passing grooves 10 are formed in the top surface. A circumferential groove is formed in the inner wall of the bottom of the blowout prevention cap 2, a lock ring 4 is arranged in the groove, a screw thread matched with the lock ring 4 is arranged on the outer wall of the middle of the connecting pipe 11, and the lock ring 4 can be locked with the screw thread when the blowout prevention cap 2 moves downwards; and the connecting pipe 11 is connected with the blowout prevention cap 2 through the safety pin 3. The bottom of the blowout prevention support 5 is provided with a pressing ring 6, the step on the outer wall of the pressing ring 6 is pressed on the top surface of the lower joint 9, the bottom of the pressing ring 6 is provided with a valve seat 8, the valve seat 8 is arranged inside the lower joint 9, and a sealing ring is arranged between the valve seat 8 and the lower joint 9. The upper part of the valve seat 8 is provided with a valve ball 7, and the valve seat 8 is matched with the valve ball 7 through a spherical surface.
The blowout prevention fixed valve is connected to the lower portion of the pump barrel and is arranged in a well along with the pipe column and the pump barrel, and the meshing surface between the blowout prevention cap 2 and the inner portion of the upper connector 1 is in clearance sealing, so that the blowout prevention state is achieved in the process of being arranged in the well. After the pumping rod string is put into the well, a piston connected to the lowest part of the pumping rod string is seated on the blowout prevention cap 2, the safety pin 3 is sheared under the action of gravity, the blowout prevention cap 2 and the locking ring 4 integrally descend, the meshing surfaces of the blowout prevention cap 2 and the inner part of the upper joint are separated, a liquid flow channel is opened, liquid in the annular space of the oil sleeve pushes a valve ball 7 through an inner hole of the valve seat 8 from bottom to top, and then the liquid enters the inner cavity of the piston through a liquid passing groove 10 of the upper conical surface of the blowout prevention cap 2 and then enters the inner part of the string. After the meshing surface of the inner part of the blowout prevention cap 2 and the upper joint is separated and goes down to stop, the lock ring 4 is locked with the right-angle screw thread on the connecting pipe 11, so that the switch is turned on, and the tubular pump works normally.
Claims (4)
1. The utility model provides a prevent spouting fixed valve, includes top connection (1), lower clutch (9), links to each other its characterized in that through the screw thread between top connection (1) and lower clutch (9): a blowout prevention support (5) is arranged in the upper connector (1), a connecting pipe (11) protruding upwards is arranged at the center of the blowout prevention support (5), the upper part of the connecting pipe (11) is connected with a blowout prevention cap (2), the blowout prevention cap (2) and the inner part of the upper connector (1) are in clearance seal, the top surface of the blowout prevention cap (2) is conical, and a plurality of radial liquid passing grooves (10) are formed in the top surface; a pressing ring (6) is arranged at the bottom of the blowout prevention support (5), a valve seat (8) is arranged at the bottom of the pressing ring (6), a valve ball (7) is arranged on the upper portion of the valve seat (8), and the lower portion of the valve ball (7) is in sealing fit with the top of the valve seat (8).
2. A blowout preventing fixed valve according to claim 1, wherein: a circumferential groove is formed in the inner wall of the bottom of the blowout prevention cap (2), a locking ring (4) is arranged in the groove, and a screw thread matched with the locking ring (4) is arranged on the outer wall of the middle of the connecting pipe (11); and the connecting pipe (11) is connected with the blowout prevention cap (2) through a safety pin (3).
3. A blowout preventing fixed valve according to claim 2, wherein: the valve seat (8) is arranged in the lower joint (9), and a sealing ring is arranged between the valve seat and the lower joint (9).
4. A blowout preventing fixed valve according to claim 3, wherein: through holes are formed in the periphery of a connecting pipe (11) on the blowout prevention support (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920774863.2U CN210217686U (en) | 2019-05-27 | 2019-05-27 | Blowout prevention fixed valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920774863.2U CN210217686U (en) | 2019-05-27 | 2019-05-27 | Blowout prevention fixed valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210217686U true CN210217686U (en) | 2020-03-31 |
Family
ID=69927969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920774863.2U Active CN210217686U (en) | 2019-05-27 | 2019-05-27 | Blowout prevention fixed valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210217686U (en) |
-
2019
- 2019-05-27 CN CN201920774863.2U patent/CN210217686U/en active Active
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