Wellhead sealing protection lubricating device convenient to disassemble and assemble

Abstract

The utility model discloses a wellhead airtight protection lubricating device convenient to disassemble and assemble, which relates to the field of oil and gas exploitation and comprises a packing chamber, a packing sealing box and a sucker rod, and the packing sealing box is arranged above the packing chamber and comprises a splicing seat, a left disc and a right disc; the splicing bases are connected through screws and fixedly installed on the packing sealing box, the left disc and the right disc are both movably installed on the splicing bases, the sucker rod is inserted into a wellhead of a pumping well, the sucker rod is connected with the left disc and the right disc in a sliding mode, and the left disc is connected with the right disc in a sliding mode. A driving assembly used for driving the left disc and the right disc to move is installed in the splicing base. The technical problems that an existing wellhead airtight protection lubricating device is large in replacement labor intensity, a beam hanger of an oil pumping unit and a sucker rod fixing clamp need to be detached, oil well production stopping is needed in the mode, and the oil well production stopping time is long, so that the oil extraction yield is affected are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil and gas exploitation field, concretely is a wellhead airtight protection lubricating device convenient to dismount. BACKGROUND

[0002] There are hundreds of thousands of oil wells in production in China's onshore oilfields, and there is a risk of sucker rod breakage in the oil pumping process of pumping units. If the sucker rod breaks off, the sucker rod falls into the oil well, the packing cannot be sealed, causing the crude oil in the oil pipe to leak from the packing rod orifice, spurt out of the wellhead, and wellhead crude oil pollution may occur.

[0003] Most of the old oil wellheads do not have components with blowout prevention function installed, and with the progress of technology, some oil wells have installed packing boxes with blowout prevention function, but the labor intensity of replacement is large, the pumping unit suspension rope holder and the sucker rod fixing clamp need to be disassembled, this way needs the oil well to stop production, and long oil well stop production time will affect the oil production. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a wellhead airtight protection lubricating device convenient to dismount, which solves the technical problems raised in the above background art.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a wellhead airtight protection lubricating device convenient to dismount, comprising a packing chamber, a packing seal box and a sucker rod, the packing seal box is arranged above the packing chamber and comprises a splicing seat, a left disc and a right disc; the splicing seat is connected by screws, the splicing seat is installed on the packing seal box, the left disc and the right disc are movably installed on the splicing seat, the sucker rod is inserted into the wellhead of the oil pumping well, the sucker rod is slidably connected with the left disc and the right disc, and a driving assembly for driving the left disc and the right disc to move is installed in the splicing seat; a plugging assembly for preventing oil spatter is arranged on the right disc.

[0006] Preferably, the driving assembly comprises a half gear, a pair of cavities are formed on the two sides of the splicing seat, a half gear is rotatably installed in each of the pair of cavities, a moving box is slidably installed in each of the cavities, toothed gears meshing with the half gears are arranged on the upper and lower inner walls of the moving box, a pair of sliding openings are formed in the top wall of the splicing seat, and a pair of the moving boxes are fixedly connected with the left disc and the right disc through a pair of fixed rods, and the pair of fixed rods are slidably connected with the sliding openings.

[0007] Preferably, the plugging assembly comprises a steel ball, a ball cage pipe is fixedly connected to the right disc, the ball cage pipe is arranged obliquely, and a steel ball is placed in the ball cage pipe.

[0008] Preferably, grooves are formed on the opposite sides of the left disc and the right disc, and the grooves form a lubricating oil cavity after being butted.

[0009] Preferably, the ball cage pipe top is provided with a sealing cap, and the sealing cap is provided with an oil injection nozzle.

[0010] Preferably, the left disc, the right disc and the packing seal box are provided with a first sealing gasket and a splicing joint sealing gasket.

[0011] Beneficial effects

[0012] The utility model provides a well mouth airtight protection lubricating device convenient to dismount possesses following beneficial effects:

[0013] 1. By setting up left disc, right disc, and setting up left disc, right disc as movable installation on packing box, convenient to dismount, splicing seat is connected through screw, convenient to butt joint installation of splicing seat on packing box, adopt left and right butt joint split type connection structure, can under the condition of not dismounting of oil pumping machine hanging rope device oil pumping rod clamp, quickly assemble and disassemble the device, greatly reduce the labor intensity, by setting up drive component, starting drive component can drive left disc, right disc moves, convenient to butt joint left disc, right disc, by setting up plugging component, when oil well happens oil pumping rod broken rod drop accident, can effectively block up oil pumping rod hole, thereby can prevent oil pipe crude oil from spewing and causing pollution;

[0014] 2. The splicing seat is provided with a rotating handle for controlling the rotation of the half gear, the rotating handle drives the half gear to rotate, the half gear is engaged with the teeth in the moving box to drive the moving box to move, the half gear is engaged with the teeth above and below the moving box to drive the moving box to move in different directions, thereby facilitating the adjustment of the position of the moving box to drive the left disc and the right disc to move. BRIEF DESCRIPTION OF DRAWINGS

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

[0016] Figure 2 It is Figure 1 An enlarged schematic view of A;

[0017] Figure 3 It is a front view of the utility model.

[0018] In the figure: 1, left disc; 2, cavity; 3, half gear; 4, moving box; 5, right disc; 6, sealing cap; 7, oil injection nozzle; 8, ball cage pipe; 9, steel ball; 10, sliding port; 11, first sealing gasket; 12, splicing joint sealing gasket; 13, fixed rod; 14, splicing seat; 15, oil pumping rod; 16, packing seal box; 17, packing chamber; 18, lubricating oil cavity; 19, screw. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. In this article, the orientation terms such as "upper", "lower" and the like are referred to the orientation of the drawings. Figure 1

[0020] Please refer to Figures 1-3 The utility model provides a kind of wellhead sealing protection lubricating device of convenient disassembly, including packing room 17, packing seal box 16, sucker rod 15, packing seal box 16 is set in packing room 17 upper, including splicing seat 14, left disc 1, right disc 5;Splicing seat 14 is connected by screw 19, splicing seat 14 is installed on packing seal box 16, left disc 1, right disc 5 are movably installed on splicing seat 14, sucker rod 15 is inserted in the wellhead of pumping well, and sucker rod 15 is slidably connected with left disc 1 and right disc 5, and driving assembly for driving left disc 1 and right disc 5 to move is installed in splicing seat 14;Right disc 5 is provided with plugging assembly for preventing oil splash.

[0021] By being provided with left disc 1, right disc 5, and left disc 1, right disc 5 are movably installed on packing box, to facilitate disassembly, splicing seat 14 is connected by screw 19, to facilitate splicing seat 14 butt joint installation on packing box, by adopting left and right butt joint split type connecting structure, this device can be quickly assembled and disassembled under the condition that pumping unit does not disassemble suspension rope device sucker rod 15 card, greatly reduce labor intensity, by being provided with driving assembly, starting driving assembly can drive left disc 1 and right disc 5 to move, to facilitate the butt joint of left disc 1 and right disc 5, by being provided with plugging assembly, when sucker rod 15 rod breaking and falling accident occurs in oil well, the hole of sucker rod 15 can be effectively plugged, so as to prevent oil pipe crude oil from spilling out and causing pollution.

[0022] Further, the driving assembly includes a half gear 3, a pair of cavities 2 are formed on the two sides of the splicing seat 14, a half gear 3 is rotatably installed in each of the pair of cavities 2, a moving box 4 is slidably installed in each of the cavities 2, and a plurality of teeth are formed on the upper and lower inner walls of the moving box 4 and engaged with the half gear 3, a pair of sliding openings 10 are formed on the top wall of the splicing seat 14, and the pair of moving boxes 4 are fixedly connected with the left disc 1 and the right disc 5 through a pair of fixing rods 13, and the pair of fixing rods 13 are slidably connected with the sliding openings 10.

[0023] A handle is installed on the splicing seat 14 to control the rotation of the half gear 3, rotating the handle drives the half gear 3 to rotate, and the half gear 3 is engaged with the teeth in the moving box 4 to drive the moving box 4 to move, the half gear 3 is engaged with the teeth above and below the moving box 4 to drive the moving box 4 to move in different directions, so as to adjust the position of the moving box 4 to drive the left disc 1 and the right disc 5 to move, facilitating the tight butt joint of the left and right discs 5.

[0024] ​Further, the plugging assembly comprises a steel ball 9, the right disc 5 is fixedly connected with a ball cage tube 8, the ball cage tube 8 is arranged obliquely, and the steel ball 9 is placed in the ball cage tube 8.

[0025] By being fixedly connected with the ball cage tube 8 and placing the steel ball 9 in the ball cage tube 8, the steel ball 9 rolls along with the up-down movement of the sucker rod 15 under the action of gravity, and when the sucker rod 15 is broken, the steel ball 9 falls to the hole of the sucker rod 15, which can effectively prevent the oil pipe crude oil from spilling outwards and causing pollution.

[0026] Further, the left disc 1 and the right disc 5 are both provided with grooves on opposite sides, and the grooves form a lubricating oil cavity 18 after being butted.

[0027] By being provided with the grooves on the opposite sides of the left disc 1 and the right disc 5, the lubricating oil cavity 18 can be formed after the butt joint of the grooves of the two discs, so as to lubricate the packing.

[0028] Further, the ball cage tube 8 is provided with a sealing cap 6 at the top, and the sealing cap 6 is provided with an oil injection nozzle 7.

[0029] By being provided with the sealing cap 6 and the oil injection nozzle 7 on the sealing cap 6, the lubricating oil can be injected into the device through the oil injection nozzle 7, the lubricating oil can enter the lubricating oil cavity 18 through the ball cage tube 8, and thus the lubricating oil can be brought into the packing sealing box 16 during the up-down movement of the sucker rod 15, so as to continuously lubricate the packing and effectively prolong the service life of the packing.

[0030] Further, the first sealing gasket 11 and the splicing sealing gasket 12 are arranged between the left disc 1, the right disc 5 and the packing sealing box 16.

[0031] By being provided with the first sealing gasket 11 and the splicing sealing gasket, the sealing effect can be achieved.

[0032] By the person skilled in the art, all electrical components in the case are connected with the power supply through wires, and appropriate controllers should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should be completed according to the working order of the electrical components in the working principle described below. The detailed connection means is a well-known technology in the art. The working principle and process are mainly introduced below, and the electrical control is not described.

[0033] The working principle and use process of the utility model: when using, set up the packing seal box 16 on the packing chamber 17, install a pair of spliced seats 14 on the packing seal box 16 through screw 19, rotate the handle to drive the half gear 3 to rotate, drive the moving box 4 to move through the half gear 3 and the gear in the moving box 4, until the left disc 1 and the right disc 5 are tightly butt joint, in the use process, can inject lubricating oil from the oil injection nozzle 7, make lubricating oil pass through the ball cage tube 8 and enter the lubricating oil cavity 18, in the process of the sucker rod 15 up and down movement, can drive lubricating oil to enter the packing seal box 16 to continuously lubricate the packing, effectively prolong the packing life, when the oil well occurs the sucker rod 15 broken rod and falls off accident, can effectively plug the sucker rod 15 hole, thereby can prevent the oil pipe crude oil from spewing to the outside and cause pollution.

[0034] Although the embodiments of the utility model have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wellhead sealing protection lubricating device which is convenient to disassemble and assemble, comprising a packing chamber (17), a packing seal box (16) and a sucker rod (15), the packing seal box (16) is arranged above the packing chamber (17), characterized in that, The utility model provides a left and right plate splicing device for oil pumping well, including splicing seat (14), left plate (1), right plate (5), splicing seat (14) is connected through screw (19), splicing seat (14) is installed on the packing seal box (16), left plate (1), right plate (5) are all movably installed on splicing seat (14), sucker rod (15) is inserted and is installed in the oil pumping well wellhead, and sucker rod (15) is slidably connected with left plate (1), right plate (5), and driving assembly for driving left plate (1) and right plate (5) are installed in splicing seat (14), and the right plate (5) is provided with the plugging assembly for preventing oil splash.

2. The wellhead sealing and protecting lubricating device convenient to disassemble according to claim 1, characterized in that, The utility model discloses a left and right plate splicing device for oil pumping well, including splicing seat (14), left plate (1), right plate (5), splicing seat (14) is connected through screw (19), splicing seat (14) is installed on the packing seal box (16), left plate (1), right plate (5) are all movably installed on splicing seat (14), sucker rod (15) is inserted and is installed in the oil pumping well wellhead, and sucker rod (15) is slidably connected with left plate (1), right plate (5), and driving assembly for driving left plate (1) and right plate (5) are installed in splicing seat (14), and the right plate (5) is provided with the plugging assembly for preventing oil splash.

3. The wellhead sealing and protecting lubricating device convenient to disassemble according to claim 1, characterized in that, The utility model discloses a left and right plate splicing device for oil pumping well, including splicing seat (14), left plate (1), right plate (5), splicing seat (14) is connected through screw (19), splicing seat (14) is installed on the packing seal box (16), left plate (1), right plate (5) are all movably installed on splicing seat (14), sucker rod (15) is inserted and is installed in the oil pumping well wellhead, and sucker rod (15) is slidably connected with left plate (1), right plate (5), and driving assembly for driving left plate (1) and right plate (5) are installed in splicing seat (14), and the right plate (5) is provided with the plugging assembly for preventing oil splash.

4. The wellhead sealing and protecting lubricating device convenient to disassemble and assemble according to claim 1, characterized in that, The utility model discloses a left and right plate splicing device for oil pumping well, including splicing seat (14), left plate (1), right plate (5), splicing seat (14) is connected through screw (19), splicing seat (14) is installed on the packing seal box (16), left plate (1), right plate (5) are all movably installed on splicing seat (14), sucker rod (15) is inserted and is installed in the oil pumping well wellhead, and sucker rod (15) is slidably connected with left plate (1), right plate (5), and driving assembly for driving left plate (1) and right plate (5) are installed in splicing seat (14), and the right plate (5) is provided with the plugging assembly for preventing oil splash.

5. The wellhead sealing and protecting lubricating device convenient to disassemble and assemble according to claim 3, characterized in that, The utility model discloses a left and right plate splicing device for oil pumping well, including splicing seat (14), left plate (1), right plate (5), splicing seat (14) is connected through screw (19), splicing seat (14) is installed on the packing seal box (16), left plate (1), right plate (5) are all movably installed on splicing seat (14), sucker rod (15) is inserted and is installed in the oil pumping well wellhead, and sucker rod (15) is slidably connected with left plate (1), right plate (5), and driving assembly for driving left plate (1) and right plate (5) are installed in splicing seat (14), and the right plate (5) is provided with the plugging assembly for preventing oil splash.

6. The wellhead sealing and protecting lubricating device convenient to disassemble according to claim 1, characterized in that, The utility model discloses a left and right plate splicing device for oil pumping well, including splicing seat (14), left plate (1), right plate (5), splicing seat (14) is connected through screw (19), splicing seat (14) is installed on the packing seal box (16), left plate (1), right plate (5) are all movably installed on splicing seat (14), sucker rod (15) is inserted and is installed in the oil pumping well wellhead, and sucker rod (15) is slidably connected with left plate (1), right plate (5), and driving assembly for driving left plate (1) and right plate (5) are installed in splicing seat (14), and the right plate (5) is provided with the plugging assembly for preventing oil splash.

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