CN116658119A - Emergency plugging valve for broken sucker rod of oil extraction machine - Google Patents

Abstract

The invention discloses an emergency plugging valve for breaking off a sucker rod of an oil extraction machine, which comprises an upper valve body, wherein a lower valve body is arranged below the upper valve body, a sealing ring is arranged between the upper valve body and the lower valve body, first sealing pieces are arranged in the upper valve body and the lower valve body, a ball valve is arranged between the two first sealing pieces, a through hole is arranged in the middle of the ball valve, a sliding bearing is arranged in the through hole, a sucker rod is arranged in the sliding bearing, a driving groove is arranged on the ball valve, a driving mechanism is arranged on the upper valve body, a limiting mechanism is arranged on the upper valve body, the ball valve is limited by the sucker rod in advance to move, after the sucker rod breaks off, the ball valve can be automatically closed by a gravity acting method, so that the leakage of petroleum after the sucker rod breaks off is blocked, friction with the sucker rod is reduced by installing the sliding bearing or rolling bearing in the ball valve, the sucker rod is convenient to directly descend after the sucker rod, the sucker rod does not stay, and the counterweight handle and the sucker rod are arranged at 45 degrees, and the mutual interference between the counterweight handle and the original parts of the sucker rod is prevented when the ball valve is opened and closed.

Description

Emergency plugging valve for broken sucker rod of oil extraction machine

Technical Field

The invention relates to the field of breaking of sucker rods of oil extraction machines, in particular to an emergency blocking valve for breaking of sucker rods of oil extraction machines.

Background

In the working process of the sucker rod, the sucker rod bears the action of asymmetric cyclic load, and the load borne by the upper polished rod comprises: the hydraulic pump comprises seven forces, namely the load of a sucker rod string, the load of a liquid string, the inertial loads of the sucker rod string, a tubing string and the liquid string, the friction resistance of the sucker rod string in movement, the vibration load caused by the elasticity of the sucker rod string and the tubing string, the impact load caused by the hydraulic shock, and the torsion caused by factors such as well deviation change, screw thread non-concentricity, swing of a rope hanger and the like. The load born by the sucker rod string changes with depth, for example, the load of the sucker rod string is smaller as the sucker rod string is downwards, the sucker rod string is changed from tensile stress to compressive stress below a neutral point by the action of the upper jacking force born by the sucker rod string at the lower part, so that the sucker rod is forced to bend, the torsion and the friction are increased, and the working condition of the sucker rod at the lower part is more severe. Thus, the sucker rod string is not subjected to a simple asymmetric cyclic load, but in fact the sucker rod below the neutral point is subjected to an asymmetric pull-press cyclic load, and the unprocessed area of the sucker rod string itself reaches more than 85%, so that a fatigue source is inevitably present, and fatigue fracture occurs.

However, the existing sucker rod of the oil extraction machine is not provided with a sealing device after being broken, oil can be sprayed out from the position of the crude oil rod after the sucker rod is broken, and because the oil extraction machine is mostly located at a position where people smoke is rare, workers cannot plug in time, so that oil waste and environmental pollution are caused.

Disclosure of Invention

The invention aims to provide an emergency plugging valve for breaking off a sucker rod of an oil extraction machine, so as to solve the technical problems.

The invention aims to solve the technical problems, and is realized by adopting the following technical scheme:

the utility model provides an oil recovery machine sucker rod emergency shutoff valve that falls absolutely, includes the valve body, it is provided with down the valve body to go up the valve body below, it is connected with down the valve body to go up the valve body through interior hexagonal socket head cap screw, be provided with the sealing washer between last valve body and the lower valve body, it all is provided with first sealing member to go up the valve body and the inside of lower valve body, two be provided with the ball valve between the first sealing member, it is provided with the through-hole to run through in the middle of the ball valve, the inside fixedly connected with slide bearing of through-hole, slide bearing is inside to be provided with the sucker rod, be provided with the drive groove on the ball valve, be provided with actuating mechanism on the last valve body, fixedly connected with stop gear on the last valve body.

Preferably, the upper valve body is provided with a sealing groove, the driving mechanism comprises a driving block, one end of the driving block is located inside the driving groove, the other end of the driving block is fixedly connected with a driving shaft, a handle connecting shaft is fixedly connected to the driving shaft, a second sealing piece is arranged inside the sealing groove, a threaded cap is connected to the driving groove in a threaded mode, a fixed ring is sleeved on the handle connecting shaft, a counterweight handle is fixedly connected to the fixed ring, a limiting block is fixedly connected to the bottom of the fixed ring, and a first hexagonal nut is connected to the handle connecting shaft in a threaded mode.

Preferably, the limiting mechanism comprises a limiting pipe, the limiting pipe is fixedly connected with the upper valve body, a limiting column is slidably connected inside the limiting pipe, the limiting column is connected with the limiting pipe through a spring, a limiting ring is fixedly connected onto the limiting pipe, a connecting ring is fixedly connected onto the limiting column, and the inner diameter of the limiting ring is identical to the outer diameter of the connecting ring.

Preferably, the upper valve body is fixedly connected with a hollow pipe, a tooth clamping groove is formed in the inner wall of the hollow pipe, a stirring piece is fixedly connected to the driving shaft, and an opening is formed in the hollow pipe.

Preferably, the mounting plate is fixedly connected with the upper valve body, the mounting plate penetrates through and is provided with a reciprocating screw rod, the reciprocating screw rod is rotationally connected with the mounting plate, a threaded block is connected to the reciprocating screw rod in a threaded mode, the threaded block is in sliding connection with the upper valve body, two second auxiliary sliding rods are fixedly connected to the mounting plate, a first sliding block is connected to the second auxiliary sliding rods in a sliding mode, the first sliding blocks are in sliding connection with the upper valve body, sliding holes are formed in the first sliding blocks in a penetrating mode, the first auxiliary sliding rods are fixedly connected to the threaded block in a sliding mode, the first auxiliary sliding rods penetrate through the sliding holes and are in sliding connection with the first sliding blocks, an oiling mechanism is fixedly connected to the upper valve body, the reciprocating screw rod is fixedly connected with a belt pulley on a driving shaft, and the two belt pulleys are connected through connecting belts.

Preferably, the oiling mechanism comprises an oil storage box, a push rod is arranged on the oil storage box in a penetrating mode, the push rod is in sliding connection with the oil storage box, one end of the push rod is fixedly connected with a first sliding block, the other end of the push rod is fixedly connected with a piston plate, the piston plate is located inside the oil storage box and is in sliding connection with the oil storage box, the oil storage box is fixedly connected with an upper valve body, a communicating pipe is fixedly connected with the bottom of the oil storage box, and the communicating pipe penetrates through the upper valve body and extends to the inside of the upper valve body, and a unidirectional assembly is arranged inside the communicating pipe.

Preferably, the unidirectional component comprises a spray pipe, the spray pipe is fixedly connected with and communicated with the oil storage box, two annular grooves are formed in the spray pipe, an oil outlet groove is formed in the annular groove at the bottom of the spray pipe, the oil outlet groove is communicated with the inside of the spray pipe, a flexible sealing sleeve is sleeved on the oil outlet groove, a clamping ring is fixedly connected with the inside of the flexible sealing sleeve, and the clamping ring is spliced with the annular grooves.

Preferably, the sucker rod is sleeved with a dust cover, and the dust cover is connected with the upper valve body.

The beneficial effects of the invention are as follows:

1. the invention utilizes the prior limit ball valve movement of the sucker rod, after the sucker rod breaks down, the ball valve can be automatically closed by a gravity acting method, thereby blocking the leakage of petroleum after the sucker rod breaks down, and the friction with the sucker rod is reduced by installing the sliding bearing or the rolling bearing in the ball valve, thereby facilitating the sucker rod to directly descend after breaking down without stopping, and the balance weight handle and the sucker rod are arranged at 45 degrees, so as to prevent the mutual interference between the balance weight handle and the original part of the pumping unit when the ball valve is opened and closed.

2. Through setting up the hollow tube to set up the card tooth's socket in the hollow tube, the counter weight handle just can forward rotation like this under the effect of card tooth's socket and plectrum, can not reverse rotation, and still the effect of spacing pipe, spacing post makes the counter weight handle drive the ball valve and rotate and seal the back, will except artifical special operation, can't move, the effectual counter weight handle of having avoided appears rotating at cooperation ball valve shutoff in-process, and the phenomenon that causes the shutoff failure appears.

3. When the counterweight handle drives the ball valve to rotate, the piston plate is driven to move, the piston plate moves to extrude lubricating oil to be discharged through the spray pipe, and due to the unidirectional component, when the lubricating oil pressure in the spray pipe exceeds the pressure outside the pipe, the lubricating oil can enter the oil outlet groove, the pressure promotes the bottom of the flexible sealing sleeve to be away from the bottom of the spray pipe, then, the lubricating oil flows out through the annular nozzle formed between the flexible sealing sleeve and the spray pipe, when the pressure outside the spray pipe exceeds the lubricating oil pressure in the spray pipe, the sealing sleeve is tightly clamped on the spray pipe, thereby backflow is prevented, in this way, the valve is only allowed to flow in one direction, and no redundant lubricating oil is remained in the spray pipe due to the fact that the valve has no cavity at the downstream of the check function.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic diagram of the connection of the upper valve body and the hollow tube according to the present invention;

FIG. 4 is an enlarged schematic view of portion A of FIG. 2;

FIG. 5 is a schematic view of the structure of the ball valve of the present invention;

FIG. 6 is a schematic view of a spacing mechanism according to the present invention;

FIG. 7 is a schematic diagram of the oiling mechanism of the present invention;

fig. 8 is an enlarged schematic view of a portion B of fig. 7.

Reference numerals: 1. an upper valve body; 2. a limiting tube; 3. a fixing ring; 4. a first hex nut; 5. a handle connecting shaft; 6. a limiting block; 7. a lower valve body; 8. a counterweight handle; 9. a sucker rod; 10. a dust cover; 11. a hexagon socket head cap screw; 12. a ball valve; 13. a first seal; 14. a seal ring; 15. an oil storage box; 16. a push rod; 17. a first slider; 18. a first auxiliary slide bar; 19. an opening; 20. a driving plate; 21. a hollow tube; 22. a drive shaft; 23. a belt pulley; 24. a connecting belt; 25. a mounting plate; 26. a second auxiliary slide bar; 27. a reciprocating screw rod; 28. a screw block; 29. a screw cap; 30. a second seal; 31. a driving block; 32. a driving groove; 33. a spring; 34. a limit column; 35. a limiting ring; 36. a connecting ring; 37. a piston plate; 39. a communicating pipe; 40. a clasp; 41. a flexible sealing sleeve; 42. an oil outlet groove; 43. an annular groove; 44. a spray pipe.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present invention are obtained, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

Example 1:

as shown in fig. 1-8, the emergency plugging valve for the breaking of the sucker rod of the oil extraction machine comprises an upper valve body 1, a lower valve body 7 is arranged below the upper valve body 1, the upper valve body 1 is connected with the lower valve body 7 through a hexagon socket head cap screw 11, a sealing ring 14 is arranged between the upper valve body 1 and the lower valve body 7, first sealing pieces 13 are arranged inside the upper valve body 1 and the lower valve body 7, a ball valve 12 is arranged between the two first sealing pieces 13, a through hole is arranged in the middle of the ball valve 12 in a penetrating way, a sliding bearing is fixedly connected inside the through hole, a sucker rod 9 is arranged inside the sliding bearing, a driving groove 32 is arranged on the ball valve 12, a driving mechanism is arranged on the upper valve body 1, and a limiting mechanism is fixedly connected on the upper valve body 1;

the upper valve body 1 is provided with a sealing groove, the driving mechanism comprises a driving block 31, one end of the driving block 31 is positioned in a driving groove 32, the other end of the driving block 31 is fixedly connected with a driving shaft 22, a handle connecting shaft 5 is fixedly connected to the driving shaft 22, a second sealing piece 30 is arranged in the sealing groove, the driving groove 32 is connected with a screw cap 29 in a threaded manner, a fixed ring 3 is sleeved on the handle connecting shaft 5, a counterweight handle 8 is fixedly connected to the fixed ring 3, a limiting block 6 is fixedly connected to the bottom of the fixed ring 3, and a first hexagonal nut 4 is connected to the handle connecting shaft 5 in a threaded manner;

the limiting mechanism comprises a limiting pipe 2, the limiting pipe 2 is fixedly connected with the upper valve body 1, a limiting column 34 is slidably connected inside the limiting pipe 2, the limiting column 34 is connected with the limiting pipe 2 through a spring 33, a limiting ring 35 is fixedly connected onto the limiting pipe 2, a connecting ring 36 is fixedly connected onto the limiting column 34, and the inner diameter of the limiting ring 35 is identical to the outer diameter of the connecting ring 36;

a hollow tube 21 is fixedly connected to the upper valve body 1, a tooth clamping groove is formed in the inner wall of the hollow tube 21, a toggle piece 20 is fixedly connected to a driving shaft 22, and an opening 19 is formed in the hollow tube 21;

a dust cover 10 is sleeved on the sucker rod 9, and the dust cover 10 is connected with the upper valve body 1;

when the sucker rod 9 normally moves up and down to pump oil, the sucker rod 9 and a sliding bearing or a rolling bearing arranged in an inner hole of the ball valve 12 are in sliding or rolling contact with each other, and the ball valve 12 is always in an open state due to the sucker rod 9;

when the sucker rod 9 breaks down, the gravitational potential energy of the counterweight handle 8 is used for doing work, and the ball valve 12 is rotated through the driving block 31, so that the ball valve 12 can seal the upper valve body 1 and the lower valve body 7, thereby preventing petroleum leakage;

the hollow tube 21 is arranged, and the tooth clamping grooves are formed in the hollow tube 21, so that the counterweight handle 8 can only rotate positively and can not rotate reversely under the action of the tooth clamping grooves and the stirring piece 20, and the counterweight handle 8 can not move except for manual special operation after the counterweight handle 8 drives the ball valve 12 to rotate and seal, and the phenomenon that the counterweight handle 8 rotates in the sealing process of the ball valve 12 is effectively avoided, so that the sealing failure occurs;

when the counterweight handle 8 needs to be restored to the original state, the limiting column 34 can be pressed, so that the connecting ring 36 on the limiting column 34 is inserted into the limiting ring 35 on the limiting pipe 2, and the limiting column 34 is positioned on the limiting pipe 2, so that the counterweight handle 8 can lose the limiting position, can be effectively rotated until the counterweight handle returns to the original position, and the sucker rod 9 is replaced for limiting use.

Example 2:

as shown in fig. 1 to 8, in the case where the other portions are the same as in embodiment 1, this embodiment differs from embodiment 1 in that: the upper valve body 1 is fixedly connected with a mounting plate 25, the mounting plate 25 is provided with a reciprocating screw rod 27 in a penetrating manner, the reciprocating screw rod 27 is rotationally connected with the mounting plate 25, the reciprocating screw rod 27 is in threaded connection with a threaded block 28, the threaded block 28 is in sliding connection with the upper valve body 1, the mounting plate 25 is fixedly connected with two second auxiliary slide bars 26, the second auxiliary slide bars 26 are in sliding connection with a first slide block 17, the first slide block 17 is in sliding connection with the upper valve body 1, a slide hole is formed in the first slide block 17 in a penetrating manner, the threaded block 28 is fixedly connected with a first auxiliary slide bar 18, the first auxiliary slide bar 18 penetrates through the slide hole and is in sliding connection with the first slide block 17, the upper valve body 1 is fixedly connected with an oiling mechanism, the oiling mechanism is connected with the first slide block 17, the reciprocating screw rod 27 is fixedly connected with a belt pulley 23 on a driving shaft 22, and the two belt pulleys 23 are connected through a connecting belt 24;

the oiling mechanism comprises an oil storage box 15, a push rod 16 is arranged on the oil storage box 15 in a penetrating manner, the push rod 16 is in sliding connection with the oil storage box 15, one end of the push rod 16 is fixedly connected with a first sliding block 17, the other end of the push rod 16 is fixedly connected with a piston plate 37, the piston plate 37 is positioned inside the oil storage box 15 and is in sliding connection with the oil storage box 15, the oil storage box 15 is fixedly connected with an upper valve body 1, a communicating pipe 39 is fixedly connected with the bottom of the oil storage box 15, the communicating pipe 39 penetrates through the upper valve body 1 and extends into the upper valve body 1, and a unidirectional component is arranged inside the communicating pipe 39;

when the counterweight handle 8 rotates, the connecting belt 24 and the belt pulley 23 drive the reciprocating screw rod 27 to rotate, the reciprocating screw rod 27 drives the threaded block 28 to move, the threaded block 28 drives the first sliding block 17 to move on the second auxiliary sliding block through the first auxiliary sliding rod 18, the first sliding block 17 moves and drives the piston plate 37 to move through the first push rod 16, and the piston plate 37 extrudes lubricating oil to be sprayed out of the spray pipe 44, so that the ball valve 12 can be effectively filled with lubricating oil automatically, normal rotation of the ball valve 12 is ensured, and the phenomenon that the ball valve 12 cannot rotate due to lack of lubrication is effectively avoided.

Example 3:

as shown in fig. 1 to 8, in the case where the other portions are the same as in embodiment 1, this embodiment differs from embodiment 1 in that: the unidirectional component comprises a spray pipe 44, the spray pipe 44 is fixedly connected and communicated with the oil storage box 15, two annular grooves 43 are formed in the spray pipe 44, an oil outlet groove 42 is formed in the annular groove 43 positioned at the bottom of the spray pipe 44, the oil outlet groove 42 is communicated with the interior of the spray pipe 44, a flexible sealing sleeve 41 is sleeved on the oil outlet groove 42, a clamping ring 40 is fixedly connected in the flexible sealing sleeve 41, and the clamping ring 40 is spliced with the annular grooves 43;

when the piston plate 37 moves to press the lubricant to be discharged through the nozzle 44, since the flexible packing 41 is provided on the nozzle 44, when the lubricant pressure in the nozzle 44 exceeds the pressure outside the tube, the lubricant enters the oil discharge groove 42, the pressure urges the bottom of the flexible packing 41 away from the bottom of the nozzle 44, and then the lubricant is discharged through the annular nozzle formed between the flexible packing 41 and the nozzle 44,

when the pressure outside spout 44 exceeds the pressure of the lubricant within spout 44, the sealing sleeve is tightly clamped against spout 44 to prevent back flow, in such a way that flow is only permitted in one direction, since the valve has no cavity downstream of the "check" function, and no excess lubricant is retained in spout 44.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides an oil recovery machine sucker rod emergency shutoff valve that falls, includes valve body (1), its characterized in that: the utility model discloses a valve body, including upper valve body (1), lower valve body (7), upper valve body (1) and lower valve body (7) are inside to be provided with sealing washer (14), upper valve body (1) and lower valve body (7) are inside all to be provided with first sealing member (13), two be provided with ball valve (12) between first sealing member (13), run through in the middle of ball valve (12) and be provided with the through-hole, the inside fixedly connected with slide bearing of through-hole, slide bearing is inside to be provided with sucker rod (9), be provided with actuating groove (32) on ball valve (12), be provided with actuating mechanism on upper valve body (1), fixedly connected with stop gear on upper valve body (1).

2. The oil extraction machine sucker rod breakage emergency shutoff valve according to claim 1, wherein: be provided with seal groove on last valve body (1), actuating mechanism includes drive block (31), drive block (31) one end is located inside drive slot (32), drive block (31) other end fixedly connected with drive shaft (22), fixedly connected with handle connecting axle (5) on drive shaft (22), inside being provided with of seal groove second sealing member (30), threaded connection has screw cap (29) on drive slot (32), the cover is equipped with solid fixed ring (3) on handle connecting axle (5), gu fixed ring (3) are last fixedly connected with counter weight handle (8), gu fixed ring (3) bottom fixedly connected with stopper (6), threaded connection has first hexagon nut (4) on handle connecting axle (5).

3. The oil extraction machine sucker rod breakage emergency shutoff valve according to claim 1, wherein: the limiting mechanism comprises a limiting pipe (2), the limiting pipe (2) is fixedly connected with the upper valve body (1), a limiting column (34) is connected inside the limiting pipe (2) in a sliding mode, the limiting column (34) is connected with the limiting pipe (2) through a spring (33), a limiting ring (35) is fixedly connected to the limiting pipe (2), a connecting ring (36) is fixedly connected to the limiting column (34), and the inner diameter of the limiting ring (35) is identical to the outer diameter of the connecting ring (36).

4. The oil extraction machine sucker rod breakage emergency shutoff valve according to claim 2, wherein: the upper valve body (1) is fixedly connected with a hollow tube (21), a tooth clamping groove is formed in the inner wall of the hollow tube (21), a toggle piece (20) is fixedly connected to the driving shaft (22), and an opening (19) is formed in the hollow tube (21).

5. The oil extraction machine sucker rod breakage emergency shutoff valve of claim 4, wherein: the utility model provides a valve body, including valve body (1) and valve body, valve body (1) is gone up, fixedly connected with mounting panel (25), mounting panel (25) run through and are provided with reciprocating lead screw (27), reciprocating lead screw (27) and mounting panel (25) rotate to be connected, threaded connection has screw thread piece (28) on reciprocating lead screw (27), screw thread piece (28) and last valve body (1) sliding connection, fixedly connected with second auxiliary slide bar (26) on mounting panel (25), sliding connection has first slider (17) on second auxiliary slide bar (26), first slider (17) and last valve body (1) sliding connection, run through on first slider (17) and be provided with the slide opening, fixedly connected with first auxiliary slide bar (18) on screw thread piece (28), first auxiliary slide bar (18) pass the slide opening and with first slider (17) sliding connection, go up fixedly connected with oiling mechanism on valve body (1), oiling mechanism is connected with first slider (17), reciprocating lead screw (27) all fixedly connected with belt pulley (23) on drive shaft (22) are connected with each other through (23).

6. The oil extraction machine sucker rod breakage emergency shutoff valve of claim 5, wherein: the oiling mechanism comprises an oil storage box (15), wherein a push rod (16) is arranged on the oil storage box (15) in a penetrating mode, the push rod (16) is in sliding connection with the oil storage box (15), one end of the push rod (16) is fixedly connected with a first sliding block (17), the other end of the push rod (16) is fixedly connected with a piston plate (37), the piston plate (37) is located inside the oil storage box (15) and is in sliding connection with the oil storage box (15), the oil storage box (15) is fixedly connected with an upper valve body (1), a communicating pipe (39) is fixedly connected with the bottom of the oil storage box (15), the communicating pipe (39) penetrates through the upper valve body (1) and extends to the inside of the upper valve body (1), and a unidirectional component is arranged inside the communicating pipe (39).

7. The oil extraction machine sucker rod breakage emergency shutoff valve of claim 6, wherein: the one-way assembly comprises a spray pipe (44), the spray pipe (44) is fixedly connected with an oil storage box (5) and is communicated with the oil storage box, two annular grooves (43) are formed in the spray pipe (44), an oil outlet groove (42) is formed in the annular groove (43) in the bottom of the spray pipe (44), the oil outlet groove (42) is communicated with the inside of the spray pipe (44), a flexible sealing sleeve (41) is sleeved on the oil outlet groove (42), a clamping ring (40) is fixedly connected to the inside of the flexible sealing sleeve (41), and the clamping ring (40) is spliced with the annular groove (43).

8. The oil extraction machine sucker rod breakage emergency shutoff valve according to claim 1, wherein: the sucker rod (9) is sleeved with a dust cover (10), and the dust cover (10) is connected with the upper valve body (1).