CN217462106U

CN217462106U - Reversing valve of wellhead control system

Info

Publication number: CN217462106U
Application number: CN202221555618.0U
Authority: CN
Inventors: 黄武; 朱文亮; 罗劲松
Original assignee: Wuhan Tolman New Energy Technology Co ltd
Current assignee: Wuhan Tolman New Energy Technology Co ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-09-20
Anticipated expiration: 2032-06-21

Abstract

The utility model discloses a reversing valve of a wellhead control system, which comprises a valve body, wherein a valve rod is movably inserted in the valve body, a first spring is sleeved below the surface of the valve rod, and a piston is arranged in the valve body and below the first spring; the utility model discloses a manual-automatic, area lock dual fail-safe, when no air source pressure, can extract the handle and press the lock and carry out the locking state. When the piston is jacked up by pressure in the pilot port in a locking state, the first spring automatically rebounds, and the lock pin button is released to reset. And can still keep the pull-up state; when air source pressure exists, the air source pressure assists the handle to be very light and convenient to pull out. The locking nut is stopped at the valve cover for panel installation or the valve body installation hole can be installed in a portable mode. The integrated cold-drawing valve body has stable performance and avoids the defects of casting air holes, slag inclusion and the like. And the universality is good, and the valve body can be used with other pneumatic control and manual control valve bodies.

Description

Reversing valve of wellhead control system

Technical Field

The utility model relates to an oil field well head safety control system technical field specifically is a well head control system switching-over valve.

Background

An oil field well mouth safety control system is used for related projects of oil field production units, petroleum machinery equipment manufacturers and scientific research units, provides safety protection for oil gas well mouths in field unattended environments, and needs to use reversing valves when the oil field well mouth safety control system is used.

When the existing reversing valve is used, the communicated state of the valve is inconvenient to lock and reset, and the operation is complex, so that a reversing valve of a wellhead control system needs to be provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a well head control system switching-over valve possesses the convenient advantage of locking and reseing valve intercommunication state to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a reversing valve of a wellhead control system comprises a valve body, wherein a valve rod is movably inserted in the valve body, a first spring is sleeved below the surface of the valve rod, a piston is installed in the valve body and below the first spring, an end cover is installed at the bottom of the valve body, an end connector is installed in the end cover, and the bottom of the piston is connected with the top of the end cover;

the valve cap is installed at the top of valve body, the top of valve rod runs through the valve cap and extends to the outside of valve cap, the locking piece is installed at the top of end cover, the top of valve rod runs through the locking piece and extends to the outside of locking piece, one side of locking piece slides and pegs graft there is the elasticity cylindric lock, the one end of elasticity cylindric lock slides and runs through the locking piece and with the surface joint of valve rod.

Preferably, a first O-ring is mounted inside the end cap, the first O-ring being located between the end cap and the end fitting.

Preferably, a second O-ring is mounted on the top of the end fitting, and a third O-ring is mounted between the piston and the end fitting.

Preferably, a fourth O-shaped ring is installed at the top of the piston and is located between the valve body and the piston.

Preferably, a fifth O-shaped ring is arranged between the valve rod and the valve body and is positioned above the first spring.

Preferably, a sixth O-shaped ring is installed between the valve cover and the valve body, and a seventh O-shaped ring is arranged between the valve rod and the valve cover.

Preferably, a lock cylinder is installed on one side of the lock block, the elastic cylindrical pin is installed inside the lock cylinder, the lock block is installed at one end of the elastic cylindrical pin, and a second spring is sleeved on the surface of the elastic cylindrical pin.

Preferably, the top of valve gap is inlayed and is equipped with the dog, the dog is located the outside of valve rod, the screw is installed at the top of locking piece, the handle is installed at the top of valve rod, lock nut has been cup jointed to the outside of valve gap.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a manual-automatic, area lock dual fail-safe, when no air source pressure, can extract the handle and press the lock and carry out the locking state. When the piston is jacked up by pressure in the pilot port in a locking state, the second spring automatically rebounds, and the lock pin button is released to reset. And still maintain the pulled-up state.

2. The utility model discloses a when air supply pressure, the handle is extracted to air supply pressure auxiliary handle very light. The locking nut is stopped at the valve cover for panel installation or the valve body installation hole can be installed in a portable mode. The integrated cold-drawing valve body has stable performance and avoids the defects of casting air holes, slag inclusion and the like. The valve body can be used with other pneumatic control reversing valves and manual automatic reversing valves.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a front sectional view of the present invention;

fig. 3 is a partially enlarged view of the area a in fig. 2 according to the present invention.

In the figure: 1. a valve body; 2. a valve stem; 3. a first spring; 4. a piston; 5. an end cap; 6. an end fitting; 7. a valve cover; 8. a locking block; 9. an elastic cylindrical pin; 10. a first O-ring; 11. a second O-ring; 12. a third O-ring; 13. a fourth O-ring; 14. a fifth O-ring; 15. a sixth O-ring; 16. a seventh O-ring; 17. a lock cylinder; 18. a locking block; 19. a second spring; 20. a stopper; 21. a screw; 22. a handle; 23. locking the nut; 24. a connector; 25. an inlet; 26. an outlet; 27. discharging; 28. a pilot port.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a reversing valve of a wellhead control system comprises a valve body 1, a valve rod 2 is movably inserted into the valve body 1, a first spring 3 is sleeved below the surface of the valve rod 2, a piston 4 is installed inside the valve body 1 and below the first spring 3, an end cover 5 is installed at the bottom of the valve body 1, an end connector 6 is installed inside the end cover 5, and the bottom of the piston 4 is connected with the top of the end cover 5; the bottom of end joint 6 has seted up leading mouth 28, import 25 and row mouth 27 have been seted up respectively to the upper and lower both ends of 1 of valve body 1 one side, the export 26 has been seted up to the one side that valve body 1 kept away from row mouth 27.

Valve gap 7 is installed at the top of valve body 1, and valve gap 7 is run through and extends to the outside of valve gap 7 at the top of valve rod 2, and locking piece 8 is installed at the top of end cover 5, and locking piece 8 is run through and extends to the outside of locking piece 8 at the top of valve rod 2, and one side of locking piece 8 slides and pegs graft and has elasticity cylindric lock 9, and the one end of elasticity cylindric lock 9 slides and runs through locking piece 8 and with the surface joint of valve rod 2.

When the valve is pulled up, the inlet and the outlet are communicated, the discharge port is cut off, and the valve is kept in a pulled-up state when pilot pressure exists. When no pilot force exists, the first spring 3 automatically rebounds and resets, and the outlet is communicated with the discharge port; when the pilot pressure is not available, the handle 22 is in a pulled-up state, the lock cylinder 17 can be pressed down for locking, and the inlet and the outlet are communicated at the moment; when the pilot pressure is restored, the lock cylinder 17 is rebounded to automatically unlock, and the outlet and the discharge port are communicated.

The relay valve is a two-position three-way normally closed valve and can be reset manually. Its design objective is to establish the valve output pressure by pulling on the handle 22. Once the handle 22 is pulled outward and pilot supply pressure is applied, the relay valve will remain in normal use. When the pressure of the pilot supply is lost, the inlet end is closed, and the pressure in the control loop is released. Relay valves of this type are most commonly used to control the opening/closing sequence of operation of surface safety valves or to operate typical fail-close pneumatic safety systems. The valve may optionally include a lock block assembly.

A first O-ring 10 is mounted inside the end cap 5, the first O-ring 10 being located between the end cap 5 and the end fitting 6. A second O-ring 11 is mounted on the top of the end fitting 6, and a third O-ring 12 is mounted between the piston 4 and the end fitting 6. And a fourth O-shaped ring 13 is arranged on the top of the piston 4, and the fourth O-shaped ring 13 is positioned between the valve body 1 and the piston 4.

And a fifth O-shaped ring 14 is arranged between the valve rod 2 and the valve body 1, and the fifth O-shaped ring 14 is positioned above the first spring 3. A sixth O-shaped ring 15 is arranged between the valve cover 7 and the valve body 1, and a seventh O-shaped ring 16 is arranged between the valve rod 2 and the valve cover 7.

A lock cylinder 17 is installed on one side of the lock block 8, the elastic cylindrical pin 9 is installed inside the lock cylinder 17, a lock block 18 is installed at one end of the elastic cylindrical pin 9, and a second spring 19 is sleeved on the surface of the elastic cylindrical pin 9. The top of valve gap 7 is inlayed and is equipped with dog 20, and dog 20 is located the outside of valve rod 2, and screw 21 is installed at the top of locking piece 8, and handle 22 is installed at the top of valve rod 2, and lock nut 23 has been cup jointed to the outside of valve gap 7, and the connector 24 with screw 21 looks adaptation is installed at the top of locking piece 8.

The manual-automatic integrated lock has double safety, and when no air source pressure exists, the handle 22 can be pulled out to press the lock to be locked. In the locking state, when the piston 4 is jacked up by pressure of the pilot port, the first spring 3 automatically rebounds, and the lock pin button is released to reset. And still maintain the pulled-up state. When there is air supply pressure, the air supply pressure assist handle 22 is very easy to pull out of the handle 22. The locking nut 23 is stopped at the valve cover 7 for panel installation or the installation hole of the valve body 1 can be installed in a portable way. The integrated cold-drawing valve body has stable performance and avoids the defects of casting air holes, slag inclusion and the like. And the universality is good, and the valve body 1 can be used with other pneumatic control and manual control valve bodies.

The large pneumatic piston and the small hydraulic piston reasonably distribute the stress area of the piston 4 at the pilot port, correspondingly match a gas medium or a liquid medium, and accurately assist the piston 4 properly. The unique anti-rotation design of the valve rod 2 greatly prolongs the service life of the valve rod 2 and the sealing ring, thereby greatly prolonging the service life of the valve. The special equipment is used for processing the valve rod 2, and the critical dimension tolerance and the form and position tolerance of each part of the valve rod 2 are ensured as much as possible.

Claims

1. The utility model provides a well head control system switching-over valve, includes valve body (1), its characterized in that: a valve rod (2) is movably inserted into the valve body (1), a first spring (3) is sleeved below the surface of the valve rod (2), a piston (4) is installed inside the valve body (1) and below the first spring (3), an end cover (5) is installed at the bottom of the valve body (1), an end connector (6) is installed inside the end cover (5), and the bottom of the piston (4) is connected with the top of the end cover (5);

valve gap (7) are installed at the top of valve body (1), valve gap (7) are run through and extend to the outside of valve gap (7) at the top of valve rod (2), locking piece (8) are installed at the top of end cover (5), the outside of locking piece (8) is run through and extend to at the top of valve rod (2), one side of locking piece (8) is slided and is pegged graft and have elasticity cylindric lock (9), the one end of elasticity cylindric lock (9) is slided and is run through locking piece (8) and with the surface joint of valve rod (2).

2. A wellhead control system directional control valve as claimed in claim 1, characterised in that: a first O-shaped ring (10) is installed inside the end cover (5), and the first O-shaped ring (10) is located between the end cover (5) and the end connector (6).

3. A wellhead control system directional control valve as claimed in claim 1, characterised in that: a second O-shaped ring (11) is installed at the top of the end joint (6), and a third O-shaped ring (12) is installed between the piston (4) and the end joint (6).

4. A wellhead control system directional control valve as claimed in claim 1, characterised in that: and a fourth O-shaped ring (13) is installed at the top of the piston (4), and the fourth O-shaped ring (13) is positioned between the valve body (1) and the piston (4).

5. A wellhead control system directional control valve as claimed in claim 1, characterised in that: a fifth O-shaped ring (14) is arranged between the valve rod (2) and the valve body (1), and the fifth O-shaped ring (14) is located above the first spring (3).

6. A wellhead control system directional control valve as claimed in claim 1, characterised in that: a sixth O-shaped ring (15) is installed between the valve cover (7) and the valve body (1), and a seventh O-shaped ring (16) is arranged between the valve rod (2) and the valve cover (7).

7. A wellhead control system directional control valve as claimed in claim 1, characterised in that: a lock cylinder (17) is installed on one side of the lock block (8), the elastic cylindrical pin (9) is installed inside the lock cylinder (17), a locking block (18) is installed at one end of the elastic cylindrical pin (9), and a second spring (19) is sleeved on the surface of the elastic cylindrical pin (9).

8. A wellhead control system directional control valve as claimed in claim 1, characterised in that: the top of valve gap (7) is inlayed and is equipped with dog (20), dog (20) are located the outside of valve rod (2), screw (21) are installed at the top of locking piece (8), handle (22) are installed at the top of valve rod (2), lock nut (23) have been cup jointed to the outside of valve gap (7).