Wellhead sealing and lubricating device

Abstract

The utility model discloses a kind of wellhead sealing protection lubricating devices, it is related to oil and gas exploitation field, including a wellhead sealing protection lubricating device, including flange connecting disc, left disc and right disc;A pair of the flange connecting disc dismounting connection, left disc, right disc are respectively installed on a pair of flange connecting disc, left disc and right disc are all provided with recess on opposite side, recess is formed after butting light rod movable slot and lubricating cavity, light rod is inserted in the wellhead of pumping well, the light rod is slidably connected with light rod movable slot;The left disc, right disc are annularly arranged with several ball cage pipes in, effectively solve the technical problems that the wellhead sealing protection lubricating device of existing mostly only sets up one oil injection port, then manually injects lubricating oil to light rod through oil injection port, to light rod and wellhead place are lubricated, this lubrication mode, it is not convenient to the whole circumference surface of light rod Play better lubricating effect, and need manual oil injection into the technical problem of oil injection port.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas extraction, specifically a wellhead sealing and lubrication device. Background Technology

[0002] Oil wells are located on the surface to facilitate oil drainage and control. During operation, as oil well production enters the medium-to-high water-cut stage, the sealing problems of the wellhead packing box and the corrosion of the polished rod become increasingly prominent. The consumption of sealing materials accelerates rapidly, and well fluid leaks from the wellhead packing box, resulting in serious pollution problems at the wellhead and well site. The movement of the polished rod is affected by the well fluid. To effectively solve the wellhead maintenance problems of high water-cut wells, it is necessary to lubricate the wellhead.

[0003] However, most existing wellhead sealing and lubrication devices only have one oil injection port. Lubricating oil is then manually injected into the polished rod through the oil injection port to lubricate the polished rod and the wellhead. This lubrication method is not conducive to providing good lubrication to the entire circumferential surface of the polished rod, and it requires manual injection of oil into the oil injection port. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a wellhead sealing protection lubrication device, which solves the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a wellhead sealing protection lubrication device, including a flange connecting plate, a left plate and a right plate; a pair of flange connecting plates are detachably connected, the left plate and the right plate are respectively installed on the pair of flange connecting plates, and grooves are opened on opposite sides of the left plate and the right plate. After the grooves are joined together, a smooth rod movable groove and a lubrication cavity are formed. The smooth rod is inserted into the wellhead of the oil well, and the smooth rod is slidably connected to the smooth rod movable groove.

[0006] The left and right discs are arranged in a circular array with several ball cage tubes. The walls of the left and right discs are provided with several oil filling ports that communicate with the ball cage tubes. A pair of semi-circular oil filling covers that can be spliced ​​together to form a complete ring are fixedly installed on the left and right discs. The oil filling ports are all connected to the interior of the pair of semi-circular oil filling covers. Oil storage components are installed on the left and right discs and are connected to the pair of semi-circular oil filling covers.

[0007] Preferably, a pair of semi-circular rotating rings are rotatably installed inside the pair of semi-circular oil filling covers, and a plurality of sealing blocks are movably installed inside the oil filling covers. A cavity is opened in the plurality of sealing blocks, and a spring is fixedly connected in the cavity. A sealing ball for sealing the oil filling port is fixedly connected to the other end of the spring.

[0008] Preferably, a pair of semi-circular rotating covers are rotatably mounted on a pair of semi-circular oil filling covers, and the pair of semi-circular rotating covers are respectively fixedly connected to a pair of semi-circular rotating rings. An mounting plate is fixedly mounted on the right disk, and a gear is rotatably mounted on the mounting plate. A handle for driving the gear to rotate is mounted on the gear, and an arc-shaped toothed plate that meshes with the gear is fixedly mounted at the bottom of one of the semi-circular rotating covers.

[0009] Preferably, the oil storage assembly includes a lubricating oil tank, and a pair of lubricating oil tanks are respectively fixedly installed on the left and right disks. An oil outlet pipe is fixedly connected to the bottom of the lubricating oil tank, and a valve is provided on the oil outlet pipe.

[0010] Preferably, steel balls are placed inside each of the ball cage tubes.

[0011] Beneficial effects

[0012] This utility model provides a wellhead sealing and protective lubrication device, which has the following beneficial effects:

[0013] 1. It is equipped with a left and right plate, which can be connected to each other for easy disassembly and installation. It is equipped with a flange connection plate to connect the left and right plates. It has several oil injection ports, which can be used to introduce lubricating oil into the ball cage tube. The ball cage tubes are arranged in a ring, so that the lubricating oil can enter the lubrication chamber through each ball cage tube, which can lubricate the entire circumference of the polished rod, thereby achieving a better lubrication effect.

[0014] 2. A pair of semi-circular rotating rings are installed. The rotation of the pair of semi-circular rotating rings can drive several sealing blocks to rotate. The sealing blocks have cavities inside, and springs can be installed in the cavities. The sealing ball can be installed on the other end of the spring. When the rotating rings rotate, they drive the sealing blocks, springs and sealing balls to rotate. When the sealing ball rotates to the oil inlet, it can block the oil inlet. At this time, the lubricating oil cannot enter the ball cage tube through the oil inlet. When the sealing blocks continue to rotate, the sealing ball continues to rotate, the spring contracts, and after the sealing ball moves out of the oil inlet, the lubricating oil can enter the ball cage tube through the oil inlet to lubricate the polished rod. Attached Figure Description

[0015] Figure 1 This is a front view of the internal structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0017] In the diagram: 1. Left disc; 2. Right disc; 3. Flange connection disc; 4. Polished rod; 5. Lubrication chamber; 6. Ball cage tube; 7. Oil inlet; 8. Oil inlet cover; 9. Sealing block; 10. Spring; 11. Sealing ball; 12. Rotary ring; 13. Arc-shaped toothed plate; 14. Mounting plate; 15. Gear; 16. Throttle; 17. Lubricating oil tank; 18. Rotary cover. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Wherein, directional terms such as "upper" and "lower" mentioned herein are used in conjunction with... Figure 1 The orientation is used as a reference.

[0019] Please see Figures 1-2 This utility model provides a technical solution: a wellhead sealing protection lubrication device, including a flange connecting plate 3, a left plate 1 and a right plate 2; a pair of flange connecting plates 3 are detachably connected, the left plate 1 and the right plate 2 are respectively installed on the pair of flange connecting plates 3, and grooves are opened on opposite sides of the left plate 1 and the right plate 2. After the grooves are joined together, a movable groove for the polished rod 4 and a lubrication cavity 5 are formed. The polished rod 4 is inserted into the wellhead of the oil well, and the polished rod 4 is slidably connected to the movable groove of the polished rod 4.

[0020] The left plate 1 and the right plate 2 are provided with a number of ball cage tubes 6 arranged in a ring. The walls of the left plate 1 and the right plate 2 are provided with a number of oil filling ports 7 that are connected to the ball cage tubes 6. A pair of semi-circular oil filling covers 8 that can be spliced ​​together to form a complete ring are fixedly installed on the left plate 1 and the right plate 2. The oil filling ports 7 are all connected to the interior of the pair of semi-circular oil filling covers 8. Oil storage components are installed on the left plate 1 and the right plate 2. The oil storage components are connected to the pair of semi-circular oil filling covers 8.

[0021] The device is equipped with a left plate 1 and a right plate 2, which can be connected for easy disassembly and installation. A flange connection plate 3 is installed to connect the left plate 1 and the right plate 2. Several oil inlets 7 are provided, through which lubricating oil can be introduced into the ball cage tube 6. Several ball cage tubes 6 are arranged in a ring, allowing lubricating oil to enter the lubrication chamber 5 through each ball cage tube 6, thus lubricating the entire circumference of the polished rod 4 and achieving a better lubrication effect. By placing the ball cage tube 6 and the oil inlets 7 inside the device, space can be effectively saved. A pair of semi-circular oil inlets 8 are installed, which can be spliced ​​into a complete circular oil inlets 8. The pair of semi-circular oil inlets 8 are not interconnected, allowing lubricating oil to be introduced into the semi-circular oil inlets 8 and then flow into each oil inlet 7. An oil storage component is installed to store lubricating oil, and the lubricating oil in the oil storage component can be used to supply oil to the semi-circular oil inlets 8.

[0022] Furthermore, a pair of semi-circular rotating rings 12 are rotatably installed inside a pair of semi-circular oil filling covers 8. The pair of semi-circular rotating rings 12 can be spliced ​​into a complete circular rotating ring. Several sealing blocks 9 are movably installed inside the oil filling covers 8. The sealing blocks 9 have cavities. Springs 10 are fixedly connected inside the cavities. The other end of the springs 10 is fixedly connected to a sealing ball 11 for sealing the oil filling port 7.

[0023] A pair of semi-circular rotating rings 12 are installed by rotation. The rotation of the pair of semi-circular rotating rings 12 can drive the rotation of several sealing blocks 9. The sealing blocks 9 have cavities in them, and springs 10 can be installed in the cavities. By installing springs 10, sealing balls 11 can be installed on the other end of springs 10. When the rotating rings 12 rotate, they drive the sealing blocks 9, springs 10 and sealing balls 11 to rotate. When the sealing balls 11 rotate to the oil inlet 7, the oil inlet 7 can be blocked. At this time, lubricating oil cannot enter the ball cage tube 6 through the oil inlet 7. When the sealing blocks 9 continue to rotate, the sealing balls 11 continue to rotate, the springs 10 contract, and after the sealing balls 11 move out of the oil inlet 7, the lubricating oil can enter the ball cage tube 6 through the oil inlet 7 to lubricate the polished rod 4.

[0024] Furthermore, a pair of semi-circular rotating covers 18 are rotatably mounted on a pair of semi-circular oil filling covers 8. The pair of semi-circular rotating covers 18 are fixedly connected to a pair of semi-circular rotating rings 12 respectively. A mounting plate 14 is fixedly mounted on the right disk 2. A gear 15 is rotatably mounted on the mounting plate 14. A handle 16 that drives the gear 15 to rotate is mounted on the gear 15. An arc-shaped toothed plate 13 that meshes with the gear 15 is fixedly mounted at the bottom of one of the semi-circular rotating covers 18.

[0025] The throttle 16 is installed, and rotating the throttle 16 can drive the gear 15 to rotate. The gear 15 meshes with the arc-shaped toothed plate 13, which in turn drives the arc-shaped toothed plate 13 to rotate, thereby driving the rotating ring 12 to rotate.

[0026] Furthermore, the oil storage assembly includes a lubricating oil tank 17, a pair of lubricating oil tanks 17 are fixedly installed on the left plate 1 and the right plate 2 respectively, and an oil outlet pipe is fixedly connected to the bottom of the lubricating oil tank 17, and a valve is provided on the oil outlet pipe.

[0027] Lubricating oil can be stored in the lubricating oil tank 17 by installing the lubricating oil tank 17. The lubricating oil in the lubricating oil tank 17 can flow into the semi-circular oil filling hood 8 through the lubricating oil pipe installed. A valve can be installed to control the flow rate of lubricating oil into the oil filling hood 8.

[0028] Furthermore, steel balls 9 are placed inside several ball cage tubes 6.

[0029] A steel ball 9 is placed inside the ball cage tube 6. Under the action of gravity, it rests against the polished rod 4. Normally, it rolls inside the ball cage tube 6 as the polished rod 4 moves up and down. When the polished rod 4 breaks, the steel ball 9 falls into the hole of the polished rod 4, which can effectively prevent crude oil from spraying out of the oil pipe and causing pollution.

[0030] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical connections between the various electrical components are completed in sequence. The detailed connection methods are well-known technologies in the field. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0031] The working principle and usage process of this utility model are as follows: When in use, open the valve so that the lubricating oil in the lubricating oil tank 17 can flow into the oil filling cover 8 through the oil outlet pipe. When the polished rod 4 needs to be lubricated, turn the handle 16 to drive the gear 15 to rotate. The gear 15 meshes with the arc-shaped toothed plate 13 to drive the arc-shaped toothed plate 13 to rotate, thereby driving a pair of rotating covers 18 to rotate, which in turn drives a pair of semi-circular rotating rings 12 to rotate, and then drives several sealing blocks 9 to rotate, thereby driving the sealing ball 11 to move out of the oil filling port 7. The lubricating oil entering the oil filling cover 8 enters the lubrication chamber 5 through the oil filling port 7 and the ball cage pipe 6 to lubricate the circumference of the polished rod 4. When oil filling is not needed, turn the handle 16 again to move the sealing ball 11 to the oil filling port 7 to seal the oil filling port 7.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wellhead containment and protection lubricating device, characterized in that, Includes a flange connecting plate (3), a left plate (1) and a right plate (2); a pair of flange connecting plates (3) are disassembled and connected, the left plate (1) and the right plate (2) are respectively installed on a pair of flange connecting plates (3), the left plate (1) and the right plate (2) are provided with grooves on opposite sides, and the grooves are connected to form a smooth rod (4) movable groove and a lubrication cavity (5). The smooth rod (4) is inserted into the wellhead of the oil well, and the smooth rod (4) is slidably connected to the smooth rod (4) movable groove; The left plate (1) and right plate (2) are provided with a number of ball cage tubes (6) arranged in a ring. The walls of the left plate (1) and right plate (2) are provided with a number of oil filling ports (7) that are connected to the ball cage tubes (6). A pair of semi-circular oil filling covers (8) that can be spliced ​​together to form a complete ring are fixedly installed on the left plate (1) and right plate (2). The oil filling ports (7) are connected to the interior of the pair of semi-circular oil filling covers (8). Oil storage components are installed on the left plate (1) and right plate (2). The oil storage components are connected to the pair of semi-circular oil filling covers (8).

2. The wellhead sealing and lubrication device according to claim 1, characterized in that, A pair of semi-circular rotating rings (12) are rotatably installed inside a pair of semi-circular oil filling covers (8). Several sealing blocks (9) are movably installed inside the oil filling covers. A cavity is opened in the several sealing blocks (9). A spring (10) is fixedly connected in the cavity. A sealing ball (11) for sealing the oil filling port (7) is fixedly connected to the other end of the spring (10).

3. The wellhead sealing and lubrication device according to claim 2, characterized in that, A pair of semi-circular oil filling covers (8) are rotatably mounted with a pair of semi-circular rotating covers (18), and the pair of semi-circular rotating covers (18) are respectively fixedly connected to a pair of semi-circular rotating rings (12). A mounting plate (14) is fixedly mounted on the right disk (2), and a gear (15) is rotatably mounted on the mounting plate (14). A handle (16) for driving the gear (15) to rotate is mounted on the gear (15). An arc-shaped toothed plate (13) that meshes with the gear (15) is fixedly mounted at the bottom of one of the semi-circular rotating covers (18).

4. The wellhead sealing and lubrication device according to claim 1, characterized in that, The oil storage assembly includes a lubricating oil tank (17), and a pair of lubricating oil tanks (17) are fixedly installed on the left plate (1) and the right plate (2) respectively. An oil outlet pipe is fixedly connected to the bottom of the lubricating oil tank (17), and a valve is provided on the oil outlet pipe.

5. A wellhead sealing and protective lubrication device according to claim 1, characterized in that, Steel balls are placed inside several of the ball cage tubes (6).

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