Mud valve opener

Abstract

The utility model relates to the technical field of valves, and discloses a mud valve opener which comprises an anti-rotation frame, a rotary sealing outer sleeve is fixedly connected to the outer side of the anti-rotation frame, a plurality of hydraulic oil inlets and outlets are formed in the outer wall of the rotary sealing outer sleeve, and sheet bearings are installed on the upper side and the lower side in the rotary sealing outer sleeve. A rotary sealing inner sleeve is arranged on the inner side of the rotary sealing outer sleeve in a sleeved mode, a plurality of rotary seals are arranged between the rotary sealing outer sleeve and the rotary sealing inner sleeve in a sleeved mode, a hydraulic oil way is formed in the outer wall of the rotary sealing inner sleeve, a plurality of oil ways are formed in the rotary sealing inner sleeve, and a connecting disc is fixedly connected to the top of the rotary sealing inner sleeve. A plurality of oil ports and threaded holes are sequentially formed in the connecting disc. According to the rotary hydraulic communication system, a stable and reliable rotary hydraulic communication system is formed through the design of a sealing structure and a rotatable moving structure, opening and closing of a valve on a rotary pipeline can be achieved, and the valve does not need to be operated after rotation is stopped.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a mud valve opener. Background Art

[0002] The valve that uses the gate to lift and lower to control the opening and closing of the valve, the flow direction of the fluid does not change when passing through, and the flow resistance is small. It is widely used in oil drilling equipment and other drilling equipment. The ball valve, the opening and closing part is a V-shaped valve core, which is driven by the valve stem to rotate around the axis to achieve fluid regulation and control. Among them, the hard-sealed V-type ball valve has a strong shear force between the V-shaped ball core and the metal valve seat of the hard alloy surfacing, which is particularly suitable for media containing fibers, tiny solid particles, etc. In my country, ball valves are widely used in oil refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electricity, municipal administration, steel and other industries, and occupy a pivotal position in the national economy. Mud circulation is usually used in oil drilling to achieve drilling functions. The valve group is a key equipment for controlling the discharge of mud from the mud pump. It is frequently used, and before starting the mud pump each time, the oil workers need to fully open the valves of the passage on the valve group and fully close the closed valves.

[0003] Since the gate valve has a large torque and workers cannot accurately judge whether the valve is fully opened or closed, workers often use a force lever to open or close the valve to ensure that the valve is fully opened and closed. Since some valves are installed on a rotatable shaft, the rotation must be stopped before the valve can be opened or closed. For this reason, a mud valve opener is proposed. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a mud valve opener, which aims to improve the problem that traditional valves in the prior art cannot be opened and closed when the rotating shaft is in a rotating state.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A mud valve opener comprises an anti-rotation frame, a rotary sealing sleeve is fixedly connected to the outer side of the anti-rotation frame, a plurality of hydraulic oil inlet and outlet ports are provided on the outer wall of the rotary sealing sleeve, thin-film bearings are installed on the upper and lower sides of the interior of the rotary sealing sleeve, a rotary sealing inner sleeve is sleeved on the inner side of the rotary sealing sleeve, a plurality of rotary seals are sleeved between the rotary sealing sleeve and the rotary sealing inner sleeve, a hydraulic oil circuit is provided on the outer wall of the rotary sealing inner sleeve, a plurality of oil circuits are provided inside the rotary sealing inner sleeve, a connecting disk is fixedly connected to the top of the rotary sealing inner sleeve, a plurality of oil ports and threaded holes are sequentially provided inside the connecting disk, and an actuator for controlling the opening and closing of the valve is installed on the top of the connecting disk.

[0007] As a further description of the above technical solution:

[0008] The actuator assembly includes a main frame, the bottom of which is fixedly connected to the top of the connecting plate, a plurality of chambers are opened inside the main frame, piston seals are installed on both upper and lower sides of the chamber, a rack piston is slidably connected inside the chamber, mounting frames are installed on both sides of the outside of the main frame, a gear is rotatably connected inside the mounting frame, the gear and the rack piston are meshed, a hexagonal steel is fixedly connected to the middle of the gear, and a mud valve adapter is fixedly connected to the middle of the main frame.

[0009] As a further description of the above technical solution:

[0010] The inner sides of the two sheet bearings are respectively sleeved on the upper and lower sides of the outer wall of the inner sleeve of the rotary seal.

[0011] As a further description of the above technical solution:

[0012] The hydraulic oil circuit is in contact with the outer wall of the inner sleeve of the rotary seal.

[0013] As a further description of the above technical solution:

[0014] The hydraulic oil inlet and outlet ports are communicated with the interior of the hydraulic oil circuit, and the hydraulic oil circuit is communicated with the interior of the oil circuit.

[0015] As a further description of the above technical solution:

[0016] The top end of the oil passage is communicated with the inside of the oil port, and the oil port is communicated with the cavity inside the main frame.

[0017] As a further description of the above technical solution:

[0018] The outer side of the gear is arranged in the cavity inside the main frame, and the gear is located on the outer side of the rack piston.

[0019] As a further description of the above technical solution:

[0020] The connecting plate is connected to the rotating seal inner sleeve and the main frame respectively through the cooperation of the threaded holes and the bolts.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by utilizing the sealing structure design and the rotatable motion structure to form a stable and reliable rotary hydraulic communication system, the valve on the rotary pipeline can be opened and closed without stopping the rotation and then operating the valve. The long-distance valve opening and closing action can be realized through hydraulic operation, and the precise control of the valve opening and closing speed and size can be realized by controlling the pressure and speed of the hydraulic oil.

[0023] 2. Compared with the traditional automatic valve opening or manual valve opening, the utility model can only use one way to open the valve. The valve opener can cooperate with the manual valve to realize automatic opening and closing, and will not affect the workers' manual operation of the mud valve to open and close, which greatly improves the applicability of the valve opener. Compared with replacing the electric mud valve, the valve opener can not only avoid the replacement of the mud valve, but also reduce the cost of improving the mud valve structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a mud valve opener proposed by the utility model;

[0025] Figure 2 A cross-sectional view of a rotary seal of a mud valve opener proposed by the utility model;

[0026] Figure 3 A cross-sectional view of an actuator assembly of a mud valve opener proposed by the utility model;

[0027] Figure 4 This is a cross-sectional view of the oil passage of the rotary seal inner sleeve of a mud valve opener proposed by the utility model;

[0028] Figure 5 The utility model provides a schematic diagram of the structure of a connecting plate of a mud valve opener.

[0029] Legend:

[0030] 1. Rotary seal; 2. Thin-film bearing; 3. Rotary seal inner sleeve; 4. Hydraulic oil circuit; 5. Rotary seal outer sleeve; 6. Rack piston; 7. Gear; 8. Piston seal; 9. Main frame; 10. Mud valve adapter; 11. Mounting frame; 12. Anti-rotation frame; 13. Hydraulic oil inlet and outlet; 14. Hexagonal steel; 15. Oil circuit; 16. Oil port; 17. Threaded hole; 18. Connecting plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-Figure 5The utility model provides an embodiment: a mud valve opener, including an anti-rotation frame 12, the anti-rotation frame 12 is used to fix the valve opener, ensure that the input and output parts of the hydraulic oil do not rotate, and then ensure that the valve opener is stably installed on the mud valve. A rotary sealing sleeve 5 is fixedly connected to the outside of the anti-rotation frame 12, and the rotary sealing sleeve 5 is the lower structure of the valve opener, which is used to connect the anti-rotation frame 12 to ensure the stability of the lower structure of the valve opener. The outer wall of the rotary sealing sleeve 5 is provided with a plurality of hydraulic oil inlet and outlet ports 13, and the hydraulic oil used to drive the valve opener to work enters and exits the valve opener through the hydraulic oil inlet and outlet ports 13, so as to realize the opening and closing operation of the valve opener. Thin-film bearings 2 are installed on both the upper and lower sides of the rotary sealing sleeve 5, and a rotary sealing inner sleeve 3 is sleeved on the inner side of the rotary sealing sleeve 5, and a plurality of rotary seals 1 are sleeved between the rotary sealing sleeve 5 and the rotary sealing inner sleeve 3. The cooperation of the plurality of rotary seals 1 ensures that the rotary sealing inner sleeve 3 and the rotary sealing sleeve 5 can rotate relative to each other, and can ensure sufficient sealing performance, so as to ensure that the hydraulic oil can flow stably without leakage. The outer wall of the rotary seal inner sleeve 3 is provided with a hydraulic oil circuit 4, and a plurality of oil circuits 15 are provided inside the rotary seal inner sleeve 3. External hydraulic oil enters the hydraulic oil circuit 4 through the hydraulic oil inlet and outlet ports 13, and then enters the oil circuit 15 along the hydraulic oil circuit 4. A connecting plate 18 is fixedly connected to the top of the rotary seal inner sleeve 3, and a plurality of oil ports 16 and threaded holes 17 are sequentially provided inside the connecting plate 18. An actuator for controlling the opening and closing of the valve is installed on the top of the connecting plate 18. The hydraulic oil entering the oil circuit 15 then passes through the oil port 16 inside the connecting plate 18 and enters the upper actuator, thereby driving the actuator to work and open the mud valve. At the same time, the valve opener is installed on the mud valve. When the mud valve is opened manually, the cooperation between the rotary seal inner sleeve 3 and the rotary seal outer sleeve 5 inside the valve opener allows the rotary seal inner sleeve 3 to rotate when the valve stem of the valve opener rotates, and the cooperation between the thin-film bearing 2 and the rotary seal 1 ensures that the valve opener will not interfere with the valve opener when the worker manually opens the mud valve. At the same time, the valve opener can be driven by hydraulic power to remotely start the actuator to open the valve. Compared with the traditional automatic valve opening or manual valve opening, only one method can be used to open the valve. The valve opener can cooperate with the manual valve to realize automatic opening and closing, and will not affect the workers' manual operation of the mud valve to open and close, which greatly improves the applicability of the valve opener. Compared with replacing the electric mud valve, the valve opener can not only avoid the replacement of the mud valve, but also reduce the cost of improving the mud valve structure.

[0033] The actuator assembly includes a main frame 9, the bottom of the main frame 9 is fixedly connected to the top of the connecting plate 18, a plurality of chambers are provided inside the main frame 9, piston seals 8 are installed on both upper and lower sides of the chamber, a rack piston 6 is slidably connected inside the chamber, mounting frames 11 are installed on both sides of the outside of the main frame 9, a gear 7 is rotatably connected inside the mounting frame 11, the gear 7 and the rack piston 6 are meshed, a hexagonal steel 14 is fixedly connected in the middle of the gear 7, and a mud valve adapter 10 is fixedly connected in the middle of the main frame 9. When the mud valve needs to be closed remotely, the hydraulic oil is injected into the valve opener through the hydraulic oil inlet and outlet 13 through the external driving structure, and then the hydraulic oil passes through the hydraulic oil circuit 4 and the oil port 16 into the cavity inside the main frame 9, and then the hydraulic oil pushes the rack piston 6 located inside the cavity, so that the rack piston 6 moves and drives the corresponding gear 7 to rotate, and the hexagonal steel 14 connected in the middle is driven by the rotation of the gear 7 to rotate, and then the mud valve is opened through the cooperation of the hexagonal steel 14 and the starting groove on the mud valve.

[0034] The inner sides of the two thin-film bearings 2 are respectively sleeved on the upper and lower sides of the outer wall of the rotating seal inner sleeve 3. The two thin-film bearings 2 can not only improve the sealing performance between the rotating seal inner sleeve 3 and the rotating seal outer sleeve 5, but also ensure that the rotating seal inner sleeve 3 rotates smoothly inside the rotating seal outer sleeve 5 without affecting the working conditions of the hydraulic oil circuit 4 and the oil circuit 15.

[0035] The hydraulic oil circuit 4 is abutted against the outer wall of the rotary seal inner sleeve 3. The rotary seal inner sleeve 3 and the rotary seal outer sleeve 5 cooperate to seal the hydraulic oil circuit 4 inside the valve opener. At the same time, multiple rotary seals 1 and two thin-film bearings 2 distributed up and down are cooperated to achieve sealing of the hydraulic oil circuit 4.

[0036] The hydraulic oil inlet and outlet 13 is connected to the inside of the hydraulic oil circuit 4, and the hydraulic oil circuit 4 is connected to the inside of the oil circuit 15. The external drive mechanism will inject the hydraulic oil into the hydraulic oil inlet and outlet 13 through the pipeline, and then inject the hydraulic oil into the hydraulic oil circuit 4, and then enter the oil circuit 15 through the hydraulic oil circuit 4, and then move up along the oil circuit 15 into the actuator.

[0037] The top of the oil circuit 15 is connected to the inside of the oil port 16, and the oil port 16 is connected to the cavity inside the main frame 9. After passing through the oil port 16 inside the connecting plate 18, the hydraulic oil will directly enter the interior of the actuator, and then drive the rack piston 6 inside the actuator to move, thereby realizing the valve opening operation.

[0038] The outer side of the gear 7 is arranged in the cavity inside the main frame 9, and the gear 7 is located on the outer side of the rack piston 6. Since the height of the rack piston 6 is high enough, when the rack piston 6 is located at the bottom of the cavity, the position of the top of the rack piston 6 will seal and isolate the gear 7 outside the cavity. At the same time, when the rack piston 6 is located at the top of the cavity, its bottom will seal and isolate the gear 7 outside the cavity, ensuring that the gear 7 will not affect the sealing of the cavity inside the main frame 9 when it is meshing with the rack piston 6.

[0039] The connecting plate 18 is connected to the rotating seal inner sleeve 3 and the main frame 9 respectively through the cooperation of the threaded hole 17 and the bolt, so that the connecting plate 18 can connect the upper and lower parts of the valve opener, thereby ensuring that the actuator and the mounting and fixing structure at the bottom of the valve opener can be stably assembled together.

[0040] Working principle: The mud valve opener is fixedly installed through the anti-rotation frame 12 to ensure that the rotary seal outer sleeve 5 of the input and output part of the hydraulic oil does not rotate, and only the rotary seal inner sleeve 3 drives the rotation of the main frame 9 through the connecting plate 18. The hydraulic oil is input into the hydraulic oil circuit 4 through the hydraulic oil inlet and outlet ports 13. At this time, the hydraulic oil enters the oil circuit 15 through the hydraulic oil circuit 4, and passes through the oil port 16 inside the connecting plate 18 upward through the oil circuit 15 to enter the main frame 9. When the hydraulic oil enters the cavity inside the main frame 9, it will push the rack piston 6 to move upward. During the process, the rack piston 6 will drive the corresponding gear 7 to rotate, and then drive the hexagonal steel 14 to rotate through the rotation of the gear 7. The rotation of the hexagonal steel 14 will drive the valve stem of the mud valve to rotate to realize the valve opening operation. When the hydraulic oil stops being input, the pressure in the internal cavity of the main frame 9 will push the rack piston 6 to move downward, and the hydraulic oil will flow back to the drive mechanism along the oil port 16, the oil circuit 15, the hydraulic oil circuit 4 and the hydraulic oil inlet and outlet 13. At the same time, the downward movement of the rack piston 6 will drive the gear 7 and the hexagonal steel 14 to rotate in the opposite direction, thereby realizing the closing operation of the mud valve.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mud valve opener, comprising an anti-rotation frame (12), characterized in that: A rotating seal outer sleeve (5) is fixedly connected to the outer side of the anti-rotation frame (12); a plurality of hydraulic oil inlet and outlet ports (13) are provided on the outer wall of the rotating seal outer sleeve (5); thin-film bearings (2) are installed on both upper and lower sides of the rotating seal outer sleeve (5); a rotating seal inner sleeve (3) is sleeved on the inner side of the rotating seal outer sleeve (5); a plurality of rotating seals (1) are sleeved between the rotating seal outer sleeve (5) and the rotating seal inner sleeve (3); a hydraulic oil circuit (4) is provided on the outer wall of the rotating seal inner sleeve (3); a plurality of oil circuits (15) are provided inside the rotating seal inner sleeve (3); a connecting plate (18) is fixedly connected to the top of the rotating seal inner sleeve (3); a plurality of oil ports (16) and threaded holes (17) are sequentially provided inside the connecting plate (18); and an actuator for controlling the opening and closing of the valve is installed on the top of the connecting plate (18).

2. A mud valve opener according to claim 1, characterized in that: The actuator assembly comprises a main frame (9), the bottom of the main frame (9) is fixedly connected to the top of the connecting plate (18), a plurality of chambers are provided inside the main frame (9), piston seals (8) are installed on both upper and lower sides of the chamber, a rack piston (6) is slidably connected inside the chamber, mounting frames (11) are installed on both sides of the outside of the main frame (9), a gear (7) is rotatably connected inside the mounting frame (11), the gear (7) and the rack piston (6) are meshed, a hexagonal steel (14) is fixedly connected to the middle of the gear (7), and a mud valve adapter (10) is fixedly connected to the middle of the main frame (9).

3. A mud valve opener according to claim 1, characterized in that: The inner sides of the two sheet bearings (2) are respectively sleeved on the upper and lower sides of the outer wall of the rotary seal inner sleeve (3).

4. A mud valve opener according to claim 1, characterized in that: The hydraulic oil circuit (4) is in abutment with the outer wall of the rotary seal inner sleeve (3).

5. A mud valve opener according to claim 1, characterized in that: The hydraulic oil inlet and outlet ports (13) are in communication with the interior of the hydraulic oil circuit (4), and the hydraulic oil circuit (4) is in communication with the interior of the oil circuit (15).

6. A mud valve opener according to claim 2, characterized in that: The top end of the oil passage (15) is communicated with the inside of the oil port (16), and the oil port (16) is communicated with the cavity inside the main frame (9).

7. A mud valve opener according to claim 2, characterized in that: The outer side of the gear (7) is arranged in a cavity inside the main frame (9), and the gear (7) is located on the outer side of the rack piston (6).

8. A mud valve opener according to claim 2, characterized in that: The connecting plate (18) is connected to the rotating seal inner sleeve (3) and the main frame (9) respectively through the cooperation of the threaded hole (17) and the bolt.

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