CN219452047U

CN219452047U - Multifunctional wellhead device

Info

Publication number: CN219452047U
Application number: CN202320583955.9U
Authority: CN
Inventors: 韩忠仁
Original assignee: Daqing Hewan Petroleum Machinery Equipment Co ltd
Current assignee: Daqing Hewan Petroleum Machinery Equipment Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-08-01
Anticipated expiration: 2033-03-22

Abstract

The utility model provides a multi-functional wellhead assembly, relates to wellhead assembly technical field, and it includes casing and polished rod, passes the polished rod in the casing, and upper portion and lower part are equipped with snap ring and lower snap ring respectively in the casing, and casing one lateral wall cavity of driving in the cavity passes the actuating lever, and actuating lever one end stretches into in the casing and is connected with the protection piece, and the actuating lever other end stretches out outside the cavity and is connected with the handle, and the actuating lever that is located outside the cavity installs the hasp outward, and actuating lever outer wall winding spring one that is located the cavity, and spring one's one end is connected with the protection piece, spring one's the other end and cavity inner wall connection, protection piece lower part is equipped with the stopper, and the stopper offsets with the blowout prevention ball, and the branch pipe is arranged in to the branch pipe, and branch pipe and casing intercommunication, blowout prevention ball are connected with the end cap through spring two, and the end cap is installed in the tip of branch pipe. The multifunctional wellhead device utilizes the matching use of the limiting block and the blowout prevention ball on the protection block, plays a role in preventing blowout by falling off of the polished rod, avoids environmental pollution, and simultaneously ensures personal safety.

Description

Multifunctional wellhead device

Technical field:

the utility model relates to the technical field of wellhead devices, in particular to a multifunctional wellhead device.

The background technology is as follows:

the polished rod of the pumping unit is a key part of pumping equipment, and has two functions, namely, the polished rod of the pumping unit bears underground load through a rope hanger and a square clamp; and secondly, the sealing device is matched with a wellhead packing box to seal the wellhead. Because of the influence of the quality of the polish rod and various working factors, the disconnection phenomenon of the polish rod in the working state sometimes occurs, and once the polish rod is disconnected, blowout accidents can possibly occur, so that not only can environmental pollution be caused, but also the safety of personnel can be influenced.

The utility model comprises the following steps:

the utility model aims to overcome the defects in the prior art, and provides a multifunctional wellhead device which plays a role in preventing blowout when a polished rod falls off.

In order to solve the problems existing in the background technology, the utility model adopts the following technical scheme: including casing and polished rod, pass the polished rod in the casing, upper portion and lower part are equipped with snap ring and lower snap ring respectively in the casing, and cavity is seted up to casing one side wall, passes the actuating lever in the cavity, and actuating lever one end stretches into in the casing and is connected with the protection piece, and the actuating lever other end stretches out outside the cavity and is connected with the handle, and the actuating lever that is located outside the cavity installs the hasp outward, and actuating lever outer wall winding spring one that is located the cavity, the one end and the protection piece of spring one are connected, and the other end and the cavity inner wall connection of spring one, protection piece lower part is equipped with the stopper, and the stopper offsets with the blowout prevention ball, and the blowout ball is arranged in the branch pipe, and branch pipe and casing intercommunication, blowout prevention ball are connected with the end cap through spring two, and the end cap is installed in the tip of branch pipe.

And sealing rings are arranged at the joints of the driving rods and the shell.

And a sealing ring is arranged at the joint of the plug and the branch pipe.

The lock catch is of an arch structure, one end of the lock catch is movably connected with the outer wall of the branch pipe through a pin shaft, the other end of the lock catch bypasses the driving rod and is connected with the locking piece through the pin shaft, a square hole is formed in the locking piece, the square hole is buckled on the door type lock rod, and the door type lock rod is connected with the lock.

The anti-blowout device has the beneficial effects of comprehensive functions, convenience in use, and the function of preventing blowout by falling off of the polish rod is achieved by utilizing the cooperation of the limiting block on the protection block and the blowout prevention ball, so that the environmental pollution is avoided, and the personal safety is ensured.

Description of the drawings:

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

FIG. 2 is a view showing the state of the polish rod falling off in the present utility model;

FIG. 3 is an enlarged partial side view of the present utility model;

FIG. 4 is a diagram of the latch connection of the present utility model.

The specific embodiment is as follows:

referring to the drawings, the present utility model specifically adopts the following embodiments: the anti-blowout device comprises a shell 1 and a polish rod 3, wherein the polish rod 3 penetrates through the shell 1, an upper clamping ring 2 and a lower clamping ring 4 are respectively arranged at the upper part and the lower part in the shell 1, a cavity is formed in one side wall of the shell 1, a driving rod 7 penetrates through the inside of the cavity, one end of the driving rod 7 stretches into the shell 1 and is connected with a protection block 5, the other end of the driving rod 7 stretches out of the cavity and is connected with a handle 9, a lock catch 8 is arranged outside the driving rod 7 outside the cavity, a first spring 6 is wound on the outer wall of the driving rod 7 in the cavity, one end of the first spring 6 is connected with the protection block 5, the other end of the first spring 6 is connected with the inner wall of the cavity, a limiting block 10 is arranged at the lower part of the protection block 5 and abuts against an anti-blowout ball 11, the anti-blowout ball 11 is arranged in a branch pipe 14, the branch pipe 14 is communicated with the shell 1, the anti-blowout ball 11 is connected with a plug 13 through a second spring 12, and the plug 13 is arranged at the end of the branch pipe 14. And sealing rings are arranged at the joints of the driving rods 7 and the shell 1. And a sealing ring is arranged at the joint of the plug 13 and the branch pipe 14. The lock catch 8 is of an arch structure, one end of the lock catch 8 is movably connected with the outer wall of the branch pipe 14 through a pin shaft 15, the other end of the lock catch 8 bypasses the driving rod 7 and is connected with the locking block 17 through the pin shaft, a square hole 19 is formed in the locking block 17, the square hole 19 is buckled on the door-shaped lock rod 18, and the door-shaped lock rod 18 is connected with the lock 16.

When the multifunctional wellhead device is not used, the lock 16 locks the door-type lock rod 18 and the lock block 17 together, the lock catch 8 is buckled on the driving rod 7 and is propped against the handle 9, the limiting effect on the handle 9 is achieved, the driving rod 7 is prevented from moving, the protection block 5 connected with the other end of the driving rod 7 is arranged at the position in the shell 1, the polish rod 3 is convenient to insert, after the polish rod 3 is inserted into the shell 1, the lock 16 is opened, the lock catch 8 is taken down from the driving rod 7, the protection block 5 is pushed to be contacted with the polish rod 3 due to the elastic force of the first spring 6, the limiting block 10 at the lower part of the protection block 5 props against the blowout prevention ball 11, and the second spring 12 is in a compressed state and is in a normal use state of the polish rod.

Referring to fig. 2, when the polish rod 3 accidentally drops, the protection block 5 lacks the resisting force of the polish rod 3 to the polish rod, the elastic force of the first spring 6 continues to push the protection block 5 forward, along with the continuous forward movement of the protection block 5, the lower limiting block 10 of the protection block is separated from the blowout prevention ball 11, the blowout prevention ball 11 lacks the resisting force of the limiting block 10, the second spring 12 generates thrust to the blowout prevention ball 11 in order to restore deformation, the blowout prevention ball 11 is pushed into the shell 1 and blocked on the lower clamping ring 4, the blowout is primarily prevented, at this time, the handle 9 is pulled, the handle 9 drives the driving rod 7 to recover, the lock 16 is reused to lock the lock catch 8, the protection block 5 yields out the position inside the shell 1, once the impact force of an object in the well is overlarge, the blowout prevention ball 11 on the lower clamping ring 4 is broken, the blowout prevention ball 11 moves upwards along with the impact force of the object in the well, and the blowout prevention ball 11 is abutted on the upper clamping ring 2, so that the blowout prevention effect is achieved.

To sum up, this multi-functional wellhead assembly function is comprehensive, convenient to use, utilizes stopper and blowout prevention ball's on the protection piece cooperation to use, has played the polished rod and has dropped the effect of preventing blowout, has avoided environmental pollution, has also guaranteed personal safety simultaneously.

Claims

1. The utility model provides a multi-functional wellhead assembly, includes casing (1) and polished rod (3), passes polished rod (3) in casing (1), its characterized in that: the upper part and the lower part are equipped with snap ring (2) and lower snap ring (4) respectively in casing (1), and the cavity is seted up to casing (1) lateral wall, passes actuating lever (7) in the cavity, and actuating lever (7) one end stretches into in casing (1) and is connected with protection piece (5), and actuating lever (7) other end stretches out outside the cavity and is connected with handle (9), is located actuating lever (7) outside installation hasp (8) outside the cavity, is located actuating lever (7) outer wall winding spring (6) in the cavity, and the one end and the protection piece (5) of spring (6) are connected, and the other end and the cavity inner wall connection of spring (6), protection piece (5) lower part is equipped with stopper (10), stopper (10) offset with blowout prevention ball (11), and blowout prevention ball (11) are arranged in branch pipe (14), branch pipe (14) and casing (1) intercommunication, and blowout prevention ball (11) are connected with end cap (13) through spring two (12), and end that branch pipe (13) are installed in branch pipe (14).

2. The multi-function well head assembly of claim 1, wherein: the connection part of the driving rod (7) and the shell (1) is provided with a sealing ring.

3. The multi-function well head assembly of claim 1, wherein: and a sealing ring is arranged at the joint of the plug (13) and the branch pipe (14).

4. The multi-function well head assembly of claim 1, wherein: the lock catch (8) is of an arch-shaped structure, one end of the lock catch (8) is movably connected with the outer wall of the branch pipe (14) through a pin shaft (15), the other end of the lock catch (8) bypasses the driving rod (7) and is connected with the locking block (17) through the pin shaft, a square hole (19) is formed in the locking block (17), the square hole (19) is buckled on the door-type lock rod (18), and the door-type lock rod (18) is connected with the lock (16).