Wellhead rapid oil scraping protection device

Abstract

The invention discloses a wellhead rapid oil scraping protection device, which is applied to the technical field of oil well equipment, and is characterized in that an elastic scraping ring and an elastic folding edge are arranged in a rubber core main body, so that the elastic scraping ring can be attached to the surface of an oil pipe, and adhered crude oil can be scraped off when the oil pipe passes through the elastic scraping ring in the extraction process; the anti-pollution function is achieved, through the elastic design of the elastic scraping ring and the elastic folded edge, the tubing coupling can conveniently pass through, meanwhile, the contact performance of the tubing coupling and the elastic scraping ring can be guaranteed, the annular protrusion is arranged in a matched mode, and the sealing performance of the annulus between the tubing and the wellhead can be guaranteed; by means of the hydraulic compensation mode, the abutting strength of the rubber core body to the oil pipe can be adjusted, the rubber core body can be assisted in righting work of the oil pipe, the situation that the righting capacity of the oil pipe is lost due to performance reduction of the rubber core is avoided, and then the stability of the oil pipe in the extraction process is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of oil well equipment, and in particular relates to a wellhead quick oil scraping protection device. Background Art

[0002] The wellhead quick oil scraping protection device is a device used in oil extraction equipment. Its main function is to efficiently and reliably scrape off the crude oil adhering to the sucker rod, and at the same time has the ability to quickly seal the wellhead. This device combines the two functions of oil scraping and well sealing, aiming to improve the efficiency and safety of oil extraction operations.

[0003] The wellhead quick scraper protection device uses its internal scraper rubber core to scrape off the adhered crude oil when the pumping pipe rod passes through, and uses its well sealing function to quickly seal the wellhead when necessary to prevent the occurrence of blowout accidents. However, the wellhead quick scraper protection device relies on the elastic deformation of the rubber core itself to achieve the annular space sealing between the wellhead and the oil pipe. However, the disadvantage of this method is that the rubber core is prone to plastic deformation or aging and loss of elasticity after long-term use due to life or environmental factors, thereby reducing the sealing performance of the wellhead quick scraper protection device and causing the wellhead quick scraper protection device to lose its ability to straighten the oil pipe.

[0004] Combining the above-mentioned problems, it is found that it is difficult to avoid the above-mentioned problems at the same time when the existing wellhead quick oil scraping protection devices on the market are in use, so that the desired effect cannot be achieved. Therefore, we propose a method that can use oil compensation during use to improve the annular sealing performance of the rubber core inside the wellhead quick oil scraping protection device between the wellhead and the oil pipe, and ensure the ability to straighten the oil pipe. Summary of the invention

[0005] The purpose of the present invention is to provide an existing wellhead quick oil scraping protection device, which has the advantage that an elastic scraper ring and an elastic folding edge are arranged inside the rubber core body, so that the elastic scraper ring can fit with the surface of the oil pipe, so that the adhered crude oil can be scraped off when the elastic scraper ring passes through the oil pipe during extraction, thereby playing an anti-pollution role, and the elastic design of the elastic scraper ring and the elastic folding edge makes it easy for the oil pipe coupling to pass through while ensuring the contact with it, and cooperates with the arrangement of the annular protrusion to ensure the sealing of the annulus between the oil pipe and the wellhead, and by arranging a pressing structure, the pressing strength of the rubber core body on the oil pipe can be adjusted by hydraulic compensation, which can assist the rubber core body in straightening the oil pipe, thereby avoiding the loss of the straightening ability of the oil pipe due to the degradation of the rubber core performance, thereby ensuring the stability of the oil pipe during the extraction process.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a wellhead quick oil scraping protection device, comprising a lower flange, an upper flange, a high-pressure resistant shell, a gland and an oil pipe, the high-pressure resistant shell is welded to the upper flange and the lower flange on one side thereof, a self-sealing rubber core is arranged inside the high-pressure resistant shell, a fastening cover is in close contact with the top of the self-sealing rubber core, and the fastening cover is embedded inside the gland, the gland is installed on the top of the upper flange by bolts, a central through hole is arranged inside the fastening cover and the gland, one end of the oil pipe passes through the gland, the fastening cover, the interior of the self-sealing rubber core in sequence and extends to the bottom of the lower flange;

[0007] The self-sealing rubber core includes a rubber core body, an elastic folded edge is provided at the bottom of the inner wall of the rubber core body, and an elastic scraper ring is connected to the side of the elastic folded edge away from the rubber core body, the inner wall of the elastic scraper ring is in contact with the surface of the oil pipe, the surface of the rubber core body is provided with two annular protrusions, and the surfaces of the annular protrusions are in contact with the inner wall of the high-pressure resistant shell, and a pressing structure is provided inside the rubber core body, and one side of the pressing structure extends to the outside of the high-pressure resistant shell.

[0008] By adopting the above technical scheme, an elastic scraper ring and an elastic folding edge are arranged inside the rubber core body, so that the elastic scraper ring can fit with the surface of the oil pipe, so that the adhered crude oil can be scraped off when the elastic scraper ring passes through the oil pipe during extraction, thereby playing an anti-pollution role, and the elastic design of the elastic scraper ring and the elastic folding edge makes it easy for the oil pipe coupling to pass through while ensuring the contact with it, and in conjunction with the setting of the annular protrusion, the sealing of the annulus between the oil pipe and the wellhead can be ensured, and by setting a pressing structure, the pressing strength of the rubber core body on the oil pipe can be adjusted by hydraulic compensation, which can assist the rubber core body in straightening the oil pipe, thereby avoiding the loss of the straightening ability of the oil pipe due to the degradation of the rubber core performance, thereby ensuring the stability of the oil pipe during the extraction process.

[0009] The present invention is further configured as follows: the rubber core body includes a rubber core, a flange is provided on the top of the rubber core, and the surface of the flange is in close contact with the inner wall of the upper flange, two annular rings are provided inside the rubber core, and the side of the annular ring close to the oil pipe is in contact with its surface, the pressing structure is located inside the annular ring, an annular steel plate is provided on the top of the inside of the rubber core, and a reinforcing rib is welded on the bottom of the annular steel plate, and the bottom of the reinforcing rib is located at the bottom of the inside of the rubber core.

[0010] By adopting the above technical solution, by setting the rubber core main body, the flange connected to the rubber core can be located inside the upper flange, which can play the role of locating the position of the rubber core, and by setting the upper and lower two annular rings, it can utilize its own elasticity, not only to play the role of straightening the oil pipe, but also to improve the sealing effect, and the annular steel plate and reinforcing ribs are provided to enhance the tear strength and sealing of the rubber core, thereby extending the service life of the rubber core.

[0011] The present invention is further configured as follows: the number of the reinforcing ribs is several, and they are arranged in a U shape and are evenly distributed around the bottom of the annular steel plate.

[0012] By adopting the above technical solution, the number of reinforcing ribs is set to be several, and they are arranged in a U shape and evenly distributed around the bottom of the annular steel plate. The steel wire skeleton structure formed by the reinforcing ribs and the annular steel plate greatly improves the structural strength of the rubber core.

[0013] The present invention is further configured as follows: the pressure structure includes an annular cavity, the annular cavity is opened inside the annular ring, and two connecting pipes are connected between opposite sides of the two annular cavities, an adjusting piece is connected between opposite sides of the two connecting pipes, one side of the adjusting piece is connected to a suction pipe, and one side of the suction pipe extends to the outside of the high-pressure resistant shell, a push plate is slidably connected to the inside of the annular cavity, and a push rod is connected to one side of the push plate, a pressure plate is connected to the side of the push rod away from the push plate, a positioning spring is connected between the push plate and the inner wall of the annular cavity, and is filled with oil.

[0014] By adopting the above technical solution and setting up a pressure structure, the amount of oil injected into the annular cavity can be adjusted through the suction pipe, the adjustment part and the connecting pipe, so that the push plate can have an adjustable pushing strength. Therefore, through the dual use of the positioning spring and the oil, the push plate can drive the push rod to move, and the pressure plate can adjust the contact force between the annular ring and the oil pipe. Under the elasticity of the positioning spring, the rubber core can ensure the ability to straighten the oil pipe during extraction.

[0015] The present invention is further configured as follows: the push plate is arranged in an annular shape inside the annular cavity, and the pressure plate is arranged in a semicircular shape and is located inside the annular ring on one side close to the oil pipe.

[0016] By adopting the above technical solution, the pushing plate is arranged in an annular shape inside the annular cavity, which can achieve the effect of evenly straightening the oil pipe.

[0017] The present invention is further configured as follows: the adjusting member includes a fixed shell, the fixed shell is located inside the rubber core, a guide seat is provided inside the fixed shell, and a diverter plate is rotatably connected inside the guide seat, a side of the diverter plate away from the guide seat is rotatably connected to a fixed plate, and a side of the fixed plate close to the inner wall of the fixed shell is connected to it, a guide tube is provided at the top and bottom of the guide seat, and the guide tube is connected to the connecting tube at a side close to the connecting tube.

[0018] By adopting the above technical solution and setting an adjustment part, the diverter plate can be driven to rotate between the fixed plate and the guide seat through an external driving device, and the guide tube on one side can be closed or opened, so that the suction tube can be connected or disconnected with the top or bottom connecting tube, thereby adjusting the injection amount of oil in the top or bottom annular cavity and achieving the effect of flexibly adjusting the pressure strength.

[0019] The present invention is further configured such that: the guide seat and the side opposite to the diverter plate are both arranged in an arc shape, and the two are in rotational contact with each other.

[0020] By adopting the above technical solution, the guide seat and the opposite side of the diverter plate are both arranged in an arc shape, which can facilitate the diverter plate to rotate along the inner wall of the guide seat, thereby playing a sealing role when closing one side of the guide tube.

[0021] The present invention is further configured as follows: the gland is formed by two semicircular bodies matched together, and one end of the two semicircular bodies is rotatably connected by a pin shaft.

[0022] By adopting the above technical solution, the gland is formed by two semicircular bodies and is rotatably connected by a pin. During installation, there is no need to introduce it from the surface of the oil pipe, which makes installation easier and ensures the centering of the oil pipe.

[0023] The present invention is further configured as follows: the top of the upper flange is respectively provided with positioning notches for use with the flange and the fastening cover, and the flange and the fastening cover are located in the corresponding positioning notches.

[0024] By adopting the above technical solution and providing the positioning notch, the flange and the fastening cover can be positioned and connected with the upper flange, thereby further enhancing the sealing performance.

[0025] The present invention is further configured such that: the flange, the rubber core, the annular protrusion and the elastic fold are integrally formed.

[0026] By adopting the above technical solution, the sealing performance and overall structural performance of the rubber core body can be ensured by forming the flange, the rubber core, the annular protrusion and the elastic folded edge into one piece.

[0027] In summary, the present invention has the following beneficial effects:

[0028] 1. By arranging an elastic scraper ring and an elastic folding edge inside the rubber core body, the elastic scraper ring can be fitted with the surface of the oil pipe, so that the adhered crude oil can be scraped off when the elastic scraper ring passes through the oil pipe during extraction, which plays a role in preventing pollution. The elastic design of the elastic scraper ring and the elastic folding edge makes it easy for the oil pipe coupling to pass through while ensuring contact with it. In combination with the setting of the annular protrusion, the sealing of the annulus between the oil pipe and the wellhead can be ensured.

[0029] 2. By setting up the pressing structure, the pressing strength of the rubber core body on the oil pipe can be adjusted through hydraulic compensation, which can assist the rubber core body in straightening the oil pipe, thereby avoiding the loss of the straightening ability of the oil pipe due to the degradation of the rubber core performance, thereby ensuring the stability of the oil pipe during the extraction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the self-sealing rubber core of the present invention;

[0033] Figure 4 is a schematic cross-sectional view of the main body of the rubber core of the present invention;

[0034] Figure 5 It is a schematic diagram of the connection between the annular steel plate and the reinforcing ribs of the present invention;

[0035] Figure 6 It is a schematic diagram of the connection between the pressing structure and the rubber core body of the present invention;

[0036] Figure 7 It is a cross-sectional schematic diagram of the adjusting member of the present invention.

[0037] : 1. lower flange; 2. upper flange; 3. high pressure resistant shell; 4. gland; 5. oil pipe; 6. self-sealing rubber core; 61. rubber core body; 611. rubber rubber core; 612. flange; 613. annular ring; 614. annular steel plate; 615. reinforcing rib; 62. elastic folding edge; 63. elastic scraper ring; 64. annular protrusion; 65. pressing structure; 651. annular cavity; 652. connecting pipe; 653. adjusting part; 6531. fixed shell; 6532. guide seat; 6533. diverter plate; 6534. fixed plate; 6535. guide pipe; 654. suction pipe; 655. push plate; 656. push rod; 657. pressing plate; 658. positioning spring; 7. fastening cover. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0039] refer to Figure 1-7 A wellhead quick oil scraping protection device comprises a lower flange 1, an upper flange 2, a high pressure resistant shell 3, a gland 4 and an oil pipe 5. The high pressure resistant shell 3 is welded to the upper flange 2 and the lower flange 1 on one side thereof, and a self-sealing rubber core 6 is arranged inside the high pressure resistant shell 3. The top of the self-sealing rubber core 6 is in close contact with a fastening cover 7, and the fastening cover 7 is embedded in the gland 4. The gland 4 is mounted on the top of the upper flange 2 by bolts. The fastening cover 7 and the gland 4 are both provided with a central through hole. One end of the oil pipe 5 passes through the gland 4, the fastening cover 7 and the interior of the self-sealing rubber core 6 in sequence and extends to the bottom of the lower flange 1.

[0040] The self-sealing rubber core 6 comprises a rubber core body 61, an elastic folded edge 62 is arranged at the bottom of the inner wall of the rubber core body 61, and an elastic scraper ring 63 is connected to the side of the elastic folded edge 62 away from the rubber core body 61, the inner wall of the elastic scraper ring 63 is in contact with the surface of the oil pipe 5, two annular protrusions 64 are arranged on the surface of the rubber core body 61, and the surface of the annular protrusions 64 is in contact with the inner wall of the high-pressure resistant shell 3, a pressing structure 65 is arranged inside the rubber core body 61, and one side of the pressing structure 65 extends to the outside of the high-pressure resistant shell 3, by arranging the elastic scraper ring 63 and the elastic folded edge 62 inside the rubber core body 61, the elastic scraper ring 63 can be in contact with the surface of the oil pipe 5, so that the rubber core body 61 can be in contact with the surface of the oil pipe 5, and ... During the extraction process of the pipe 5, the adhered crude oil is scraped off when passing through the elastic scraper ring 63, which plays a role in preventing pollution. The elastic design of the elastic scraper ring 63 and the elastic folded edge 62 makes it easy for the oil pipe 5 coupling to pass through while ensuring contact with it. In combination with the setting of the annular protrusion 64, the sealing of the annulus between the oil pipe 5 and the wellhead can be ensured. By setting the pressing structure 65, the pressing strength of the rubber core body 61 on the oil pipe 5 can be adjusted by hydraulic compensation, which can assist the rubber core body 61 in straightening the oil pipe 5, thereby avoiding the loss of the straightening ability of the oil pipe 5 due to the degradation of the rubber core performance, thereby ensuring the stability of the oil pipe 5 during the extraction process.

[0041] like Figure 4As shown, the rubber core body 61 includes a rubber core 611, a flange 612 is provided at the top of the rubber core 611, and the surface of the flange 612 is in close contact with the inner wall of the upper flange 2, two annular rings 613 are provided inside the rubber core 611, and the side of the annular ring 613 close to the oil pipe 5 is in contact with its surface, the pressing structure 65 is inside the annular ring 613, an annular steel plate 614 is provided at the top of the rubber core 611, and a reinforcing rib 615 is welded at the bottom of the annular steel plate 614, and the bottom of the reinforcing rib 615 is located at the rubber core 611. The bottom of the interior of 11 is provided with a rubber core body 61, and the flange 612 connected to the rubber core 611 is located inside the upper flange 2, which can play the role of positioning the rubber core 611. The upper and lower annular rings 613 are provided, and their own elasticity can be utilized to not only play the role of straightening the oil pipe 5, but also play the role of improving the sealing performance. The annular steel plate 614 and the reinforcing ribs 615 are provided to enhance the tear strength and sealing performance of the rubber core 611, thereby extending the service life of the rubber core 611.

[0042] like Figure 5 As shown, the number of reinforcing ribs 615 is several and they are arranged in a U-shape and evenly distributed around the bottom of the annular steel plate 614. By setting the number of reinforcing ribs 615 to be several and they are arranged in a U-shape and evenly distributed around the bottom of the annular steel plate 614, the steel wire skeleton structure formed by the reinforcing ribs 615 and the annular steel plate 614 greatly improves the structural strength of the rubber core 611.

[0043] like Figure 6 As shown, the pressing structure 65 includes an annular cavity 651, which is opened inside the annular ring 613, and two connecting pipes 652 are connected between the two opposite sides of the two annular cavities 651, and an adjusting member 653 is connected between the two opposite sides of the two connecting pipes 652, and one side of the adjusting member 653 is connected to a suction pipe 654, and one side of the suction pipe 654 extends to the outside of the high-pressure shell 3, and a pushing plate 655 is slidably connected inside the annular cavity 651, and a pushing rod 656 is connected to one side of the pushing plate 655, and a pressing plate 657 is connected to the side of the pushing rod 656 away from the pushing plate 655, and the pushing plate 657 is connected to the side of the pushing rod 656 away from the pushing plate 655. A positioning spring 658 is connected between 55 and the inner wall of the annular cavity 651, and the cavity is filled with oil. By setting the pressure structure 65, the amount of oil injected into the annular cavity 651 can be adjusted through the suction pipe 654, the adjustment member 653 and the connecting pipe 652, so that the push plate 655 has an adjustable pushing strength. Therefore, through the dual use of the positioning spring 658 and the oil, the push plate 655 can drive the push rod 656 to move, and the pressure plate 657 can adjust the contact force between the annular ring 613 and the oil pipe 5. Under the elasticity of the positioning spring 658, the ability of the rubber core 611 to straighten the oil pipe 5 during extraction can be guaranteed.

[0044] like Figure 6 As shown, the push plate 655 is arranged in a ring shape inside the annular cavity 651, and the pressure plate 657 is arranged in a semicircle and is located inside the annular ring 613 on the side close to the oil pipe 5. By setting the push plate 655 in a ring shape inside the annular cavity 651, the oil pipe 5 can be evenly straightened.

[0045] like Figure 7 As shown, the adjusting member 653 includes a fixed shell 6531, the fixed shell 6531 is located inside the rubber core 611, a guide seat 6532 is arranged inside the fixed shell 6531, and a diverter plate 6533 is rotatably connected inside the guide seat 6532, a side of the diverter plate 6533 away from the guide seat 6532 is rotatably connected to a fixed plate 6534, and a side of the fixed plate 6534 close to the inner wall of the fixed shell 6531 is connected to it, and a guide tube 6535 is arranged on the top and bottom of the guide seat 6532. , and the side of the guide tube 6535 close to the connecting tube 652 is connected with it. By setting the adjustment member 653, the diverter plate 6533 can be driven by an external driving device to rotate between the fixed plate 6534 and the guide seat 6532, and the guide tube 6535 on one side can be closed or opened, so that the suction tube 654 can be connected or disconnected with the top or bottom connecting tube 652, thereby adjusting the injection amount of oil in the top or bottom annular cavity 651, and achieving the effect of flexibly adjusting the pressure strength.

[0046] like Figure 7 As shown, the guide seat 6532 and the diverter plate 6533 have opposite sides that are arc-shaped, and are in rotational contact with each other. The guide seat 6532 and the diverter plate 6533 have opposite sides that are arc-shaped, so that the diverter plate 6533 can be easily rotated along the inner wall of the guide seat 6532, thereby playing a sealing role when closing one side of the guide tube 6535.

[0047] like Figure 1 As shown, the pressure cover 4 is formed by two semicircular bodies, and one end of the two semicircular bodies is rotatably connected by a pin. Since the pressure cover 4 is formed by two semicircular bodies, and one end of the two semicircular bodies is rotatably connected by a pin, there is no need to introduce it from the surface of the oil pipe 5 during installation, which achieves the effect of facilitating installation and also ensures the neutrality of the oil pipe 5.

[0048] like Figure 2 As shown, the top of the upper flange 2 is respectively provided with positioning grooves for use with the flange 612 and the fastening cover 7, and the flange 612 and the fastening cover 7 are located in the corresponding positioning grooves. By setting the positioning grooves, the flange 612 and the fastening cover 7 can be positioned and connected with the upper flange 2, thereby further enhancing the sealing performance.

[0049] like Figure 3As shown, the flange 612, the rubber core 611, the annular protrusion 64 and the elastic folded edge 62 are integrally formed. By arranging the flange 612, the rubber core 611, the annular protrusion 64 and the elastic folded edge 62 as an integrally formed one, the sealing and overall structural properties of the rubber core body 61 can be ensured.

[0050] Brief description of the use process: When using the protective device, the oil pipe 5 passes through the self-sealing rubber core 6, and is installed on the upper flange 2 through the gland 4 formed by the two semicircular bodies by bolts. During the tightening process of the gland 4, pressure is applied to the flange 612 through the tightening cover 7, so that the flange 612 and the upper flange 2 are tightly fitted, and then the amount of oil injected into the annular cavity 651 is adjusted through the suction pipe 654, the adjustment member 653 and the connecting pipe 652, so that the push plate 655 has an adjustable push strength, so that the push plate 655 can be pushed by the dual use of the positioning spring 658 and the oil. Plate 655 drives the push rod 656 to move, and the pressure plate 657 adjusts the contact force between the annular ring 613 and the oil pipe 5. Under the elasticity of the positioning spring 658, the annular ring 613 ensures the ability to straighten the oil pipe 5. During the extraction process of the oil pipe 5, the adhered crude oil is scraped off when the elastic scraper ring 63 passes through, thereby achieving the purpose of pollution prevention. The elastic design of the elastic scraper ring 63 and the elastic folding edge 62 makes it easy for the oil pipe 5 coupling to pass through while ensuring the contact with it. In combination with the setting of the annular protrusion 64, the sealing of the annulus between the oil pipe 5 and the wellhead can be guaranteed.

[0051] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A wellhead quick oil scraping protection device, comprising a lower flange (1), an upper flange (2), a high pressure resistant shell (3), a gland (4) and an oil pipe (5), characterized in that: The high-pressure resistant shell (3) is welded to the upper flange (2) and the lower flange (1) at one side thereof, and a self-sealing rubber core (6) is arranged inside the high-pressure resistant shell (3). The top of the self-sealing rubber core (6) is in close contact with a fastening cover (7), and the fastening cover (7) is embedded in the inside of the gland (4). The gland (4) is mounted on the top of the upper flange (2) by bolts. The fastening cover (7) and the gland (4) are both provided with a central through hole. One end of the oil pipe (5) passes through the gland (4), the fastening cover (7), the inside of the self-sealing rubber core (6) in sequence, and extends to the bottom of the lower flange (1). The self-sealing rubber core (6) comprises a rubber core body (61), the bottom of the inner wall of the rubber core body (61) is provided with an elastic folded edge (62), and the side of the elastic folded edge (62) away from the rubber core body (61) is connected to an elastic scraper ring (63), the inner wall of the elastic scraper ring (63) is in contact with the surface of the oil pipe (5), the surface of the rubber core body (61) is provided with two annular protrusions (64), and the surface of the annular protrusions (64) is in contact with the inner wall of the high-pressure resistant shell (3), and the inside of the rubber core body (61) is provided with a pressing structure (65), and one side of the pressing structure (65) extends to the outside of the high-pressure resistant shell (3).

2. A wellhead quick oil scraping protection device according to claim 1, characterized in that: The rubber core body (61) comprises a rubber core (611), the top of the rubber core (611) is provided with a flange (612), and the surface of the flange (612) is in close contact with the inner wall of the upper flange (2), the interior of the rubber core (611) is provided with two annular rings (613), and the side of the annular ring (613) close to the oil pipe (5) is in contact with the surface thereof, the pressing structure (65) is located inside the annular ring (613), the top of the interior of the rubber core (611) is provided with an annular steel plate (614), and the bottom of the annular steel plate (614) is welded with a reinforcing rib (615), and the bottom of the reinforcing rib (615) is located at the bottom of the rubber core (611).

3. A wellhead quick oil scraping protection device according to claim 2, characterized in that: The reinforcing ribs (615) are in a plurality and are arranged in a U shape and are evenly distributed around the bottom of the annular steel plate (614).

4. A wellhead rapid oil scraping protection device according to claim 2, characterized in that: The pressing structure (65) comprises an annular cavity (651), wherein the annular cavity (651) is arranged inside the annular ring (613), and two connecting pipes (652) are connected between opposite sides of the two annular cavities (651), and an adjusting member (653) is connected between opposite sides of the two connecting pipes (652), and one side of the adjusting member (653) is connected to a suction pipe (654), and one side of the suction pipe (654) extends to the outside of the high-pressure resistant shell (3), and a pushing plate (655) is slidably connected inside the annular cavity (651), and a pushing rod (656) is connected to one side of the pushing plate (655), and a pressing plate (657) is connected to the side of the pushing rod (656) away from the pushing plate (655), and a positioning spring (658) is connected between the pushing plate (655) and the inner wall of the annular cavity (651), and is filled with oil.

5. A wellhead quick oil scraping protection device according to claim 4, characterized in that: The push plate (655) is arranged in an annular shape inside the annular cavity (651), and the pressure plate (657) is arranged in a semicircular shape and is located inside the annular ring (613) on a side close to the oil pipe (5).

6. A wellhead quick oil scraping protection device according to claim 4, characterized in that: The adjusting member (653) comprises a fixed shell (6531), wherein the fixed shell (6531) is located inside the rubber core (611), wherein a guide seat (6532) is arranged inside the fixed shell (6531), and a diverter plate (6533) is rotatably connected inside the guide seat (6532), wherein a side of the diverter plate (6533) away from the guide seat (6532) is rotatably connected to a fixed plate (6534), and a side of the fixed plate (6534) close to the inner wall of the fixed shell (6531) is connected thereto, and a guide tube (6535) is arranged at the top and bottom of the guide seat (6532), and a side of the guide tube (6535) close to the connecting tube (652) is connected thereto.

7. A wellhead quick oil scraping protection device according to claim 6, characterized in that: The guide seat (6532) and the diverter plate (6533) have opposite sides that are both arranged in an arc shape, and are in rotational contact with each other.

8. The wellhead quick oil scraping protection device according to claim 1, characterized in that: The pressure cover (4) is formed by two semicircular bodies being matched together, and one end of the two semicircular bodies is rotatably connected via a pin shaft.

9. A wellhead quick oil scraping protection device according to claim 2, characterized in that: The top of the upper flange (2) is respectively provided with positioning notches for use with the flange (612) and the fastening cover (7), and the flange (612) and the fastening cover (7) are located in the corresponding positioning notches.

10. A wellhead quick oil scraping protection device according to claim 2, characterized in that: The flange (612), the rubber core (611), the annular protrusion (64) and the elastic fold (62) are integrally formed.

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