Anti-blocking tubing head

Abstract

The utility model discloses an anti-blocking tubing head which comprises a vertically-through tubing head body, an inner cylinder is fixed to the inner wall of the tubing head body, bearing discs allowing fluid to pass through are fixed to the upper end and the lower end of the inner cylinder respectively, a lead screw is rotationally connected to the two bearing discs, and a cleaning assembly capable of rotating is in threaded connection to the lead screw. The two sides of the cleaning assembly are slidably connected with the inner barrel wall, the upper end of the lead screw is connected with a shaft rod, and a driving mechanism for driving the shaft rod to rotate is arranged on the tubing head body. When the cleaning assembly does not work, only a small part is occupied, the inner cylinder cannot be affected in a large range, and therefore circulation of fluid cannot be affected.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pipe head processing, in particular to an anti-blocking oil pipe head. Background Art

[0002] The wellhead device for oil and gas well exploitation is an important equipment for controlling the pressure and direction of gas and liquid fluids. It is mainly composed of various components installed at the wellhead of the oil and gas well, such as the tubing head, upper flange, blowout preventer, gas tree (or oil tree), valve, etc.

[0003] After searching, it was found that the Chinese utility model patent with the authorization publication number CN217151893U discloses an oil pipe head with an anti-blocking structure. It can be seen from its specification that when in use, the motor drives the rotating shaft to rotate on the support seat, and the rotating shaft drives the cleaning brush to rotate, so that the cleaning brush brushes the dirt on the inner wall of the oil pipe head body, and the brushed dirt is filtered by the filter net and deposited in the dirt storage pipe. At the same time, the dirt is adsorbed by the magnet. When cleaning, you only need to open the rotating cap and clean out the dirt in the dirt storage pipe. By fixing the sealing ring on the left side of the third connecting plate, the fourth connecting plate is fixedly installed on the left side of the sealing ring, and then the third connecting plate and the fourth connecting plate are fixedly installed by fixing bolts.

[0004] However, the tubing head in the above patent has the following problems: there are many cleaning brushes, which are distributed along the tubing head body and are fully covered in the tubing head body. A large number of cleaning brushes will hinder the movement of the fluid and affect the flow of the fluid. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an anti-blocking oil pipe head to solve the problems mentioned in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A blockage-proof oil pipe head comprises an oil pipe head body which passes through from top to bottom, an inner cylinder is fixed to the inner wall of the oil pipe head body, bearing discs for accommodating fluid passage are fixed to the upper and lower ends of the inner cylinder, screw rods are rotatably connected to the two bearing discs, a rotatable cleaning assembly is threadedly connected to the screw rod, two sides of the cleaning assembly are slidably connected to the wall of the inner cylinder, a shaft is connected to the upper end of the screw rod, and a driving mechanism for driving the shaft rod to rotate is provided on the oil pipe head body.

[0008] Preferably, the bearing disk includes a fixed disk, a bearing seat arranged in the fixed disk, and multiple connecting rods connecting the bearing seat and the fixed disk. The outer wall of the fixed disk is fixedly connected to the inner wall of the inner cylinder, and the screw is rotatably connected to the bearing seat.

[0009] In the above technical solution, the fixed disk is connected to the bearing seat through a connecting rod, and there is a gap between adjacent connecting rods to facilitate the passage of fluid.

[0010] Preferably, the inner wall of the inner cylinder is provided with a first slide groove, and the screw rod is provided with a second slide groove; the cleaning assembly includes a screw sleeve, a slide rod fixed on both sides of the screw sleeve, a rotating sleeve rotatably connected to the bottom of the screw sleeve through a rotating bearing, and a cleaning brush connected to the outer wall of the rotating sleeve, the outer end of the cleaning brush contacts the inner cylinder wall, the screw sleeve is threadedly connected to the screw rod, the slide rod is slidably connected to the first slide groove, the inner wall of the rotating sleeve is provided with a slider, and the slider is slidably connected to the second slide groove.

[0011] In the above technical solution, during the process of driving the screw rod to rotate, since the slide rod is slidably connected to the first slide groove, the screw sleeve will move downward to drive the cleaning brush to move up and down, thereby comprehensively cleaning the inner cylinder wall.

[0012] Preferably, a groove is provided at the bottom of the screw sleeve, a convex ring is connected to the upper part of the rotating sleeve, the inner ring of the rotating bearing is fixed on the convex ring, and the outer ring of the rotating bearing is fixed on the side wall of the groove.

[0013] In the above technical solution, during the rotation of the screw rod, through the action of the slider and the second slide groove, combined with the action of the rotary bearing, the screw rod can drive the rotary sleeve to rotate together, realizing descending and rotating at the same time, thereby improving the cleaning effect.

[0014] Preferably, the driving mechanism includes a first bevel gear connected to the shaft, a transmission shaft rotatably connected to the tubing head body, a second bevel gear connected to the inner end of the transmission shaft, a cover mounted on the outside of the tubing head body, and a motor disposed in the cover, the motor being transmission-connected to the transmission shaft, and the first bevel gear meshing with the second bevel gear.

[0015] In the above technical solution, the motor works to drive the transmission shaft to rotate, and through the cooperation of the first bevel gear and the second bevel gear, the shaft rod is driven to rotate, thereby driving the screw rod to rotate.

[0016] Preferably, a sealing cover is fixed on the upper bearing seat, the first bevel gear and the second bevel gear are both located in the sealing cover, and sealing rings are provided at the connection between the transmission shaft, the sealing cover and the oil pipe head body.

[0017] In the above technical solution, the sealing cover can protect the first bevel gear and the second bevel gear, and the sealing ring can improve the sealing performance and prevent fluid leakage.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The fluid circulates through the tubing head body. When blocked, the drive shaft rotates, driving the screw to rotate. During the screw rotation, the cleaning component is driven to descend and rotate, so that the inner cylinder wall can be fully cleaned and the dredging is completed. When the cleaning component is not working, it only occupies a small part and will not cause a large-scale impact on the inner cylinder, thereby not affecting the circulation of the fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 A schematic diagram of the cleaning assembly;

[0023] Figure 4 for Figure 2 A partial enlarged view of

[0024] In the figure: 1-tubing head body, 2-inner cylinder, 3-bearing disk, 301-fixed disk, 302-bearing seat, 303-connecting rod, 4-screw, 5-cleaning assembly, 501-thread sleeve, 502-sliding rod, 503-rotating bearing, 504-rotating sleeve, 505-cleaning brush, 506-sliding block, 507-convex ring, 6-shaft rod, 7-driving mechanism, 701-first bevel gear, 702-transmission shaft, 703-second bevel gear, 704-cover, 705-motor, 8-first slide groove, 9-second slide groove, 10-sealing cover, 11-sealing ring. DETAILED DESCRIPTION

[0025] 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.

[0026] Example 1

[0027] See also Figure 1 , Figure 2 and Figure 3A tubing head for preventing blockage includes a tubing head body 1 which penetrates from top to bottom, an inner cylinder 2 is fixed to the inner wall of the tubing head body 1, and bearing disks 3 for accommodating fluid passage are fixed to the upper and lower ends of the inner cylinder 2. Specifically, the bearing disk 3 includes a fixed disk 301, a bearing seat 302 arranged in the fixed disk, and a plurality of connecting rods 303 connecting the bearing seat and the fixed disk. The outer wall of the fixed disk 301 is fixedly connected to the inner wall of the inner cylinder 2, and the fluid flows through the gaps between adjacent connecting rods 303.

[0028] like Figure 3 , Figure 4 As shown, the inner wall of the inner tube 2 is provided with a first slide groove 8, and the screw rod 4 is provided with a second slide groove 9. The two bearing seats 302 are rotatably connected with the screw rod 4, and the screw rod 4 is threadedly connected with a rotatable cleaning assembly 5, and both sides of the cleaning assembly 5 are slidably connected with the wall of the inner tube 2. Specifically, the cleaning assembly 5 includes a screw sleeve 501, a sliding rod 502 fixed on both sides of the screw sleeve, a rotating sleeve 504 rotatably connected to the bottom of the screw sleeve through a rotating bearing 503, and a cleaning brush 505 connected to the outer wall of the rotating sleeve. The bottom of the screw sleeve 501 is provided with a groove, the upper part of the rotating sleeve 504 is connected with a convex ring 507, the inner ring of the rotating bearing 503 is fixed on the convex ring 507, and the outer ring of the rotating bearing 503 is fixed on the side wall of the groove; the outer end of the cleaning brush 505 contacts the wall of the inner cylinder 2, the screw sleeve 501 is threadedly connected to the screw rod 4, the sliding rod 502 is slidably connected in the first sliding groove 8, the inner wall of the rotating sleeve 504 is provided with a sliding block 506, and the sliding block 506 is slidably connected in the second sliding groove 9. During the rotation of the screw rod 4, since the sliding rod 502 is slidably connected with the first sliding groove 8, the screw sleeve 501 will move downward. Through the action of the slider 506 and the second sliding groove 9, combined with the action of the rotating bearing 503, the rotation of the screw rod 4 can drive the rotating sleeve 504 to rotate together, realizing descending and rotating, thereby improving the cleaning effect.

[0029] The upper end of the screw rod 4 is connected to a shaft rod 6, and the tubing head body 1 is provided with a driving mechanism 7 for driving the shaft rod 6 to rotate. Specifically, the driving mechanism 7 includes a first bevel gear 701 connected to the shaft rod, a transmission shaft 702 rotatably connected to the tubing head body, a second bevel gear 703 connected to the inner end of the transmission shaft, a cover 704 installed on the outside of the tubing head body, and a motor 705 arranged in the cover, wherein the motor 705 is transmission-connected to the transmission shaft 702, and the first bevel gear 701 is meshed with the second bevel gear 703.

[0030] The working principle of this embodiment is:

[0031] The fluid circulates through the tubing head body 1. When blocked, the driving mechanism 7 controls the shaft 6 to rotate, driving the screw 4 to rotate. The screw 4 drives the cleaning assembly 5 to descend during rotation. At the same time, the second slide groove 9 cooperates with the slider 506 to drive the rotating sleeve 504 to rotate, realizing descending and rotating at the same time, so that the wall of the inner tube 2 can be fully cleaned and the unblocking is completed.

[0032] Example 2

[0033] On the basis of Example 1, a sealing cover 10 is fixed on the upper bearing seat 302, and the first bevel gear 701 and the second bevel gear 703 are both located in the sealing cover 10. The diameter of the sealing cover 10 is the same as the diameter of the bearing seat 302, and a sealing ring 11 is provided at the connection between the transmission shaft 702, the sealing cover, and the tubing head body to reduce the obstruction to the fluid. The sealing cover 10 can protect the first bevel gear 701 and the second bevel gear 703, and the sealing ring 11 can improve the sealing performance and prevent fluid leakage.

[0034] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-blocking oil pipe head, characterized in that: The invention comprises an oil pipe head body (1) which is through-through from top to bottom, an inner cylinder (2) being fixed to the inner wall of the oil pipe head body (1), bearing discs (3) for accommodating the passage of fluid being fixed to the upper and lower ends of the inner cylinder (2), screw rods (4) being rotatably connected to the two bearing discs (3), a rotatable cleaning assembly (5) being threadedly connected to the screw rod (4), two sides of the cleaning assembly (5) being slidably connected to the wall of the inner cylinder (2), a shaft rod (6) being connected to the upper end of the screw rod (4), and a driving mechanism (7) for driving the shaft rod (6) to rotate being provided on the oil pipe head body (1).

2. The anti-blocking oil pipe head according to claim 1, characterized in that: The bearing disk (3) comprises a fixed disk (301), a bearing seat (302) arranged in the fixed disk, and a plurality of connecting rods (303) connecting the bearing seat and the fixed disk. The outer wall of the fixed disk (301) is fixedly connected to the inner wall of the inner cylinder (2), and the screw rod (4) is rotatably connected to the bearing seat (302).

3. The anti-blocking oil pipe head according to claim 2, characterized in that: The inner wall of the inner cylinder (2) is provided with a first slide groove (8), and the screw rod (4) is provided with a second slide groove (9); the cleaning assembly (5) comprises a screw sleeve (501), a slide rod (502) fixed on both sides of the screw sleeve, a rotating sleeve (504) rotatably connected to the bottom of the screw sleeve through a rotating bearing (503), and a cleaning brush (505) connected to the outer wall of the rotating sleeve, wherein the outer end of the cleaning brush (505) contacts the wall of the inner cylinder (2), the screw sleeve (501) is threadedly connected to the screw rod (4), the slide rod (502) is slidably connected to the first slide groove (8), and a slider (506) is provided on the inner wall of the rotating sleeve (504), and the slider (506) is slidably connected to the second slide groove (9).

4. The anti-blocking oil pipe head according to claim 3, characterized in that: The bottom of the screw sleeve (501) is provided with a groove, the upper part of the rotating sleeve (504) is connected with a convex ring (507), the inner ring of the rotating bearing (503) is fixed on the convex ring (507), and the outer ring of the rotating bearing (503) is fixed on the side wall of the groove.

5. The anti-blocking oil pipe head according to claim 4, characterized in that: The driving mechanism (7) comprises a first bevel gear (701) connected to the shaft, a transmission shaft (702) rotatably connected to the tubing head body, a second bevel gear (703) connected to the inner end of the transmission shaft, a cover (704) installed outside the tubing head body, and a motor (705) arranged in the cover; the motor (705) is transmission-connected to the transmission shaft (702), and the first bevel gear (701) is meshed with the second bevel gear (703).

6. The anti-blocking oil pipe head according to claim 5, characterized in that: A sealing cover (10) is fixed on the upper bearing seat (302), the first bevel gear (701) and the second bevel gear (703) are both located in the sealing cover (10), and sealing rings (11) are provided at the connection between the transmission shaft (702), the sealing cover and the oil pipe head body.

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