An intelligent fracturing wellhead device capable of automatically throwing balls

Abstract

The present invention relates to the technical field of oil and gas drilling equipment, and in particular to an intelligent fracturing wellhead device capable of automatically dropping balls; the device comprises a pipe body; a flange is arranged at the lower end of the pipe body, a top plate is fixedly mounted at the upper end of the pipe body, an opening and closing mechanism is arranged on the top plate, and a ball dropping mechanism is arranged inside the pipe body; the present invention can be used for sequentially dropping balls of the same diameter and balls of different diameters, thereby improving the practicality of the intelligent fracturing wellhead device capable of automatically dropping balls, and the efficiency and accuracy of the overall dropping operation of balls of different diameters are improved through the cooperation of the variable adjustment of the distance between the pre-divided parts and the limit plates.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas drilling equipment, and in particular to an intelligent fracturing wellhead device capable of automatically dropping a ball. Background Art

[0002] Fracturing wellhead devices are often used in the extraction of oil and gas in underground rock formations. Their function is to create or expand cracks by injecting high-pressure fluid into the formation, so that oil and gas can flow into the well more smoothly. Fracturing wellhead devices are mainly composed of a ball pitching machine, a sliding sleeve and an oil pipe. Drain holes are evenly opened on the oil pipe, and a sliding sleeve is slidably installed at the position corresponding to the drainage hole on the oil pipe. Then the oil pipe is inserted into the well, and then the ball pitching machine throws the ball into the oil pipe in turn to close the sliding sleeve. The fluid in the oil pipe pushes the corresponding sliding sleeve to move to expose the corresponding drainage hole, and then the pressure of the fluid in the oil pipe is used to fracture the formation in the corresponding area.

[0003] However, the following problems exist in the use of the ball pitching machine: the existing ball pitching machine is mainly divided into two types: one that pitches balls of the same diameter and one that pitches balls of different diameters in sequence from small to large. The two types of equipment are not interchangeable, and balls of different diameters need to be placed in order from small to large before pitching. Manual placement is prone to incorrect order of ball sizes, affecting the formation stratification fracturing operation, and the placement process is time-consuming, affecting the overall efficiency of oil and gas extraction. Summary of the invention

[0004] In view of the above problems, an embodiment of the present application provides an intelligent fracturing wellhead device capable of automatically dropping balls to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the embodiments of the present application provide the following technical solutions: the embodiments of the present application provide an intelligent fracturing wellhead device capable of automatic ball throwing, comprising a pipe body; a flange is provided at the lower end of the pipe body, a top plate is fixedly installed at the upper end of the pipe body, an opening and closing mechanism is provided on the top plate, and a ball throwing mechanism is provided inside the pipe body.

[0006] As a preferred embodiment, the pitching mechanism includes a No. 1 baffle plate, and the cross-section of the lower part of the inner cavity of the tube body is a truncated cone structure with a larger upper part and a smaller lower part. The inner cavity of the tube body is coaxially fixedly installed with the No. 1 baffle plate, and a discharge hole is coaxially penetrated on the No. 1 baffle plate. The inner cavity of the tube body is also coaxially fixedly installed with a No. 2 baffle plate located above the No. 1 baffle plate, and a U-shaped hole is opened on the right side of the No. 2 baffle plate. The circumferential outer wall of the tube body is symmetrically fixed with a support seat.

[0007] As a preferred solution, the tube body is provided with a pre-dividing portion located above the No. 2 baffle plate for pre-placing the balls, and the tube body is provided with a pushing portion located between the No. 1 baffle plate and the No. 2 baffle plate for sequentially pushing the balls from small to large to drop for throwing.

[0008] As a preferred solution, the pre-distribution part includes a turntable. A turntable located above the second partition disc is coaxially and rotatably installed in the inner cavity of the pipe body. Circular holes are evenly formed along the circumference of the turntable. A guiding platform is coaxially and fixedly installed at the upper end of the turntable, and the guiding platform is in a frustum-shaped structure with a smaller upper part and a larger lower part. An actuator for driving the turntable to rotate is arranged on the pipe body.

[0009] As a preferred solution, the actuator includes a rotating shaft. The rotating shaft is fixedly installed at the upper end of the guiding platform. The upper end of the rotating shaft rotatably penetrates through the top plate. Above the top plate, there is a bracket in an inverted U-shaped structure. The two vertical sections of the bracket are respectively fixedly connected to two support seats. A stepping motor is fixedly installed at the upper end of the bracket. The output shaft of the stepping motor rotatably penetrates through the bracket and is fixedly connected to the rotating shaft.

[0010] As a preferred solution, the material pushing part includes a material pushing plate. A material pushing plate located between the first partition disc and the second partition disc is arranged in the pipe body. The left and right ends of the material pushing plate slidably penetrate through the pipe body and the corresponding support seats. Rectangular holes are formed at the positions of the support seats corresponding to the U-shaped holes. Limiting plates are symmetrically and slidably installed in the rectangular holes on the left and right. A fixing plate is fixedly installed at the left end of the material pushing plate. A reset spring is evenly installed between the right end of the fixing plate and the corresponding support seat. An adjusting part for adjusting the distance between the two limiting plates is arranged on the material pushing plate. A linkage part for cooperating with the turntable to drive the material pushing plate to move is arranged on the left limiting plate.

[0011] As a preferred solution, the adjusting part includes an installation groove. An installation groove located at the rear side of the rectangular hole is formed on the material pushing plate. The right end of the installation groove penetrates through the material pushing plate. The inner wall of the installation groove is provided with chutes corresponding to the limiting plates one by one and communicating with the rectangular hole. Sliders fixedly connected to the corresponding limiting plates are slidably installed in the chutes. A spur gear located between the two limiting plates is rotatably installed on the inner wall of the installation groove. Rack teeth are engaged with both the upper and lower sides of the spur gear. The right slider is fixedly connected to the upper rack tooth, and the left slider is fixedly connected to the lower rack tooth. An electric push rod is fixedly installed at the right end of the material pushing plate. The telescopic section of the electric push rod is fixedly connected to the lower rack tooth.

[0012] As a preferred solution, the linkage part includes a support. A support is fixedly installed at the left end of the left limiting plate. A connecting rod is rotatably installed on the support through a torsion spring rod. A notch communicating with the outside is formed on the material pushing plate. A support plate fixedly connected to the left limiting plate is slidably installed in the notch, and the support plate is located above the support. A guide post slidably penetrates through the support plate. A waist groove is formed at the left end of the connecting rod. A roller shaft fixedly slidably penetrating through the waist groove is installed on the guide post. A slideway for cooperating with the guide post is formed on the upper part of the second partition square disc, and the slideway communicates with the U-shaped hole. A through groove is formed on the left limiting plate. The right end of the connecting rod movably penetrates through the through groove and is fixedly installed with a fitting plate. The fitting plate and the connecting rod form a T-shaped structure. A driving component for driving the material pushing plate to move by abutting against the guide post is arranged on the turntable.

[0013] As a preferred solution, the driving assembly includes a circular groove, a circular groove is coaxially provided at the lower end of the turntable, a pushing plate is fixedly installed in the circular groove, and a concave arc surface is provided on the pushing plate.

[0014] As a preferred solution, the opening and closing mechanism includes a cover plate, and a cover plate for sealing an upper port of the tube body is rotatably mounted on the lower end of the top plate, and a handle is fixedly mounted on the cover plate.

[0015] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0016] 1. The present invention can be used for sequentially placing spheres of the same diameter and spheres of different diameters, thereby improving the practicality of the intelligent fracturing wellhead device capable of automatically placing spheres, and through the coordination of the variable adjustment of the distance between the pre-division and the limit plate, the efficiency and accuracy of the overall placing operation of spheres of different diameters are improved.

[0017] 2. The linkage member provided in the present invention presses the bonding plate through the ball, so that the bonding plate drives the guide column to move up into the circular groove through the connecting rod, and drives the guide column to translate through the pushing plate as the turntable rotates, so that individual balls fall into the oil pipe one by one, thereby improving the smoothness of the pitching operation and better distributing and utilizing the rotation of the turntable.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of this application.

[0021] Figure 2 This is a schematic diagram of the structure of the pitching mechanism of the present application.

[0022] Figure 3 for Figure 2 Schematic diagram of the second perspective structure.

[0023] Figure 4 It is a partial structural exploded diagram of the pitching mechanism of the present application.

[0024] Figure 5This is a schematic diagram of the structure of the regulating member of the present application.

[0025] Figure 6 for Figure 1 sectional view of .

[0026] Figure 7 for Figure 6 A magnified view of the structure in the middle.

[0027] Figure 8 This is a schematic diagram of the structure of the pusher part of the present application.

[0028] Fig. 9 This is a schematic diagram of the structure of the pushing plate of the present application.

[0029] Reference numerals: 10, tube body; 11, flange; 12, top plate; 2, pitching mechanism; 20, baffle plate No. 1; 21, discharge hole; 22, baffle plate No. 2; 23, U-shaped hole; 24, support seat; 25, pre-dividing part; 250, turntable; 251, round hole; 252, guide platform; 4, actuator; 40, rotating shaft; 41, bracket; 42, stepping motor; 26, pushing part; 260, pushing plate; 2 61. rectangular hole; 262. limit plate; 263. reset spring; 5. adjustment member; 50. mounting slot; 51. slide slot; 52. spur gear; 53. rack; 54. electric push rod; 6. linkage member; 60. connecting rod; 61. notch; 62. support plate; 63. guide column; 64. through slot; 65. fitting plate; 66. circular slot; 67. pushing plate; 3. opening and closing mechanism; 30. cover plate; 31. handle. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] like Figure 1 As shown, an intelligent fracturing wellhead device capable of automatically throwing balls comprises a pipe body 10; a flange 11 is provided at the lower end of the pipe body 10, a top plate 12 is fixedly installed at the upper end of the pipe body 10, an opening and closing mechanism 3 is provided on the top plate 12, and a ball throwing mechanism 2 is provided inside the pipe body 10.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the pitching mechanism 2 includes a No. 1 baffle plate 20, and the cross-section of the lower part of the inner cavity of the tube body 10 is a truncated cone structure with a larger upper part and a smaller lower part. The inner cavity of the tube body 10 is coaxially fixedly installed with the No. 1 baffle plate 20, and a discharge hole 21 is coaxially penetrated on the No. 1 baffle plate 20. The inner cavity of the tube body 10 is also coaxially fixedly installed with a No. 2 baffle plate 22 located above the No. 1 baffle plate 20, and a U-shaped hole 23 is opened on the right side of the No. 2 baffle plate 22. The circumferential outer wall of the tube body 10 is symmetrically fixedly installed with a support seat 24.

[0033] like Figure 1 and Figure 2 As shown, the tube body 10 is provided with a pre-dividing portion 25 located above the second baffle plate 22 for pre-placing the balls, and the tube body 10 is provided with a pushing portion 26 located between the first baffle plate 20 and the second baffle plate 22 for sequentially pushing the balls from small to large to fall for pitching.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, the opening and closing mechanism 3 includes a cover plate 30 , and the cover plate 30 for sealing the upper port of the tube body 10 is rotatably mounted on the lower end of the top plate 12 , and a handle 31 is fixedly mounted on the cover plate 30 .

[0035] During specific operation, the tube body 10 is connected to the oil pipe part through the flange 11, and then the cover plate 30 is manually pushed to rotate through the handle 31 to open the upper port of the tube body 10, and then the ball is manually poured into the tube body 10, and then the upper port of the tube body 10 is closed through the cover plate 30, and then the ball throwing mechanism 2 first rotates the pre-dividing part 25 to pre-place multiple balls, and with the rotation of the pre-dividing part 25 and the left and right reciprocating movement of the pushing part 26, the balls fall onto the pushing part 26 in order from small to large, and the reciprocating movement of the pushing part 26 will push the balls to the position of the discharge hole 21 and fall for use.

[0036] like Figure 2 , Figure 3 and Figure 4 As shown, the pre-division portion 25 includes a turntable 250, and the inner cavity of the tube body 10 is coaxially rotatably installed with a turntable 250 located above the second baffle plate 22. Circular holes 251 are evenly opened on the turntable 250 along its circumference, and a guide platform 252 is coaxially fixedly installed on the upper end of the turntable 250, and the guide platform 252 is a truncated cone structure with a small upper part and a large lower part. An actuator 4 for driving the turntable 250 to rotate is provided on the tube body 10.

[0037] like Figure 1 and Figure 2As shown, the actuator 4 includes a rotating shaft 40. The upper end of the guiding platform 252 is fixedly installed with the rotating shaft 40. The upper end of the rotating shaft 40 rotates through the top plate 12. Above the top plate 12, there is a bracket 41 in an inverted U-shaped structure. The two vertical sections of the bracket 41 are respectively fixedly connected to the two support seats 24. The upper end of the bracket 41 is fixedly installed with a stepping motor 42. The output shaft of the stepping motor 42 rotates through the bracket 41 and is fixedly connected to the rotating shaft 40.

[0038] As Figure 2 , Figure 3 and Figure 4 shown, the material pushing part 26 includes a material pushing plate 260. A material pushing plate 260 is arranged in the tube body 10 between the first partition plate 20 and the second partition plate 22. The left and right ends of the material pushing plate 260 slide through the tube body 10 and the corresponding support seats 24. At the position corresponding to the U-shaped hole 23 on the support seat 24, a rectangular hole 261 is opened. Two limiting plates 262 are symmetrically and slidably installed in the rectangular hole 261 from left to right. A fixing plate is fixedly installed at the left end of the material pushing plate 260. A reset spring 263 is uniformly installed between the right end of the fixing plate and the corresponding support seat 24. An adjusting part 5 for adjusting the distance between the two limiting plates 262 is arranged on the material pushing plate 260. A linkage part 6 for cooperating with the turntable 250 to drive the material pushing plate 260 to move is arranged on the left limiting plate 262.

[0039] As Figure 3 , Figure 4 and Figure 5 shown, the adjusting part 5 includes an installation groove 50. An installation groove 50 is opened on the material pushing plate 260 at the rear side of the rectangular hole 261. The right end of the installation groove 50 penetrates through the material pushing plate 260. The inner wall of the installation groove 50 is provided with sliding grooves 51 corresponding to the limiting plates 262 one by one and communicating with the rectangular hole 261. Sliders fixedly connected to the corresponding limiting plates 262 are slidably installed in the sliding grooves 51. A spur gear 52 located between the two limiting plates 262 is rotatably installed on the inner wall of the installation groove 50. Rack bars 53 are engaged with both the upper and lower sides of the spur gear 52. The right slider is fixedly connected to the upper rack bar 53, and the left slider is fixedly connected to the lower rack bar 53. An electric push rod 54 is fixedly installed at the right end of the material pushing plate 260. The telescopic section of the electric push rod 54 is fixedly connected to the lower rack bar 53.

[0040] During operation, the stepper motor 42 drives the shaft 40 to rotate, and the shaft 40 drives the turntable 250 to rotate through the guide platform 252. The ball is restricted by the guide platform 252 and the inner wall of the tube body 10, and the turntable 250 rotates, so that the ball falls into the circular hole 251. After that, there is a ball in each circular hole 251. As the turntable 250 rotates, one of the circular holes 251 rotates to the position of the U-shaped hole 23. When the diameter of the ball is equal to the distance between the two limit plates 262, the ball will The ball falls into the rectangular hole 261 for the throwing operation. If the diameter of the ball is greater than the distance between the two limit plates 262, the ball cannot fall into the rectangular hole 261, and will continue to move with the rotation of the turntable 250 until the required ball falls into the rectangular hole 261; when the ball falls into the rectangular hole 261, the linkage part 6 will be driven to cooperate with the turntable 250. At this time, as the turntable 250 rotates, the push plate 260 will be pushed to move, so that the ball in the rectangular hole 261 moves to the discharge port position for the throwing operation.

[0041] The electric push rod 54 pushes the corresponding rack 53 to move, and the rack 53 drives the corresponding limit plate 262 to move. The rack 53 pushed by the electric push rod 54 drives another rack 53 to move through the spur gear 52, so that the two limit plates 262 move away from each other to gradually increase the distance between the two limit plates 262, so that the balls can be dropped in sequence from small to large.

[0042] like Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, the linkage part 6 includes a support, a support is fixedly installed on the left end of the left limit plate 262, and a connecting rod 60 is rotatably installed on the support through a torsion spring rod. A slot 61 connected to the push plate 260 is provided, and a support plate 62 fixedly connected to the left limit plate 262 is slidably installed in the slot 61, and the support plate 62 is located above the support, and a guide column 63 slides through the support plate 62, and a waist groove is provided at the left end of the connecting rod 60, and a roller shaft that slides through the waist groove is fixedly slidably on the guide column 63, and a slideway that cooperates with the guide column 63 is provided on the No. 2 partition plate, and the slideway is connected to the U-shaped hole 23, and a through groove 64 is provided on the left limit plate 262, and a fitting plate 65 is fixedly installed after the right end of the connecting rod 60 movably passes through the through groove 64, and the fitting plate 65 and the connecting rod 60 form a T-shaped structure, and a driving component that contacts the guide column 63 and is used to drive the push plate 260 to move is provided on the turntable 250.

[0043] like Fig. 9 As shown, the driving assembly includes a circular groove 66 . The lower end of the rotating disk 250 is coaxially provided with a circular groove 66 . A pushing plate 67 is fixedly installed in the circular groove 66 . The pushing plate 67 is provided with an inwardly concave arc surface.

[0044] During operation, after the ball falls into the rectangular hole 261 and is located between the two limit plates 262, the ball will collide with the fitting plate 65. When the circular groove 66 is directly above the guide post 63, the ball will fall and push the fitting plate 65. The fitting plate 65 drives the connecting rod 60 to rotate, and the connecting rod 60 pushes the guide post 63 to move up into the circular groove 66. Then, as the turntable 250 rotates, the concave arc surface of the pushing plate 67 will collide with the guide post 63, and the guide post 63 will be guided to move leftward through the concave arc surface of the pushing plate 67. The column 63 drives the push plate 260 to move leftward through the limit plate 262 until the ball moves to the position of the discharge hole 21, and at the same time stretches the reset spring 263. When the ball moves to the position of the discharge hole 21, it will fall into the external oil pipe through the discharge hole 21 under the action of its own gravity to seal the corresponding sliding sleeve. At this time, the fitting plate 65 is not blocked, and the connecting rod 60 drives the guide column 63 to move down and reset to disengage from the circular groove 66 under the action of the torsion spring rod. Then the push plate 260 moves right and resets under the action of the reset spring 263.

[0045] When the pushing plate 67 is directly above the guide post 63, the ball pushes the connecting rod 60 to rotate through the fitting plate 65, and the connecting rod 60 pushes the guide post 63 to move upward, so that the ball on the guide post 63 contacts the pushing plate 67. Then, as the turntable 250 rotates, the position of the circular groove 66 moves to directly above the guide post 63. At this time, the ball continues to fall to push the connecting rod 60 to further rotate through the fitting plate 65, so that the guide post 63 is inserted into the circular groove 66, and the above operation is repeated to perform the pitching operation.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent fracturing wellhead device capable of automatically dropping a ball, comprising a pipe body (10); characterized in that: The lower end of the tube body (10) is provided with a flange (11), the upper end of the tube body (10) is fixedly mounted with a top plate (12), an opening and closing mechanism (3) is provided on the top plate (12), and a ball throwing mechanism (2) is provided inside the tube body (10); wherein: The pitching mechanism (2) comprises a No. 1 baffle plate (20), the cross section of the lower part of the inner cavity of the tube body (10) is a truncated cone structure with a larger upper part and a smaller lower part, the inner cavity of the tube body (10) is coaxially fixedly mounted with the No. 1 baffle plate (20), a discharge hole (21) is coaxially penetrated on the No. 1 baffle plate (20), the inner cavity of the tube body (10) is also coaxially fixedly mounted with a No. 2 baffle plate (22) located above the No. 1 baffle plate (20), a U-shaped hole (23) is opened on the right side of the No. 2 baffle plate (22), and a support seat (24) is fixedly mounted on the circumferential outer wall of the tube body (10) in a symmetrical manner. The tube body (10) is provided with a pre-dividing portion (25) located above the second baffle plate (22) for pre-placing the balls, and the tube body (10) is provided with a pushing portion (26) located between the first baffle plate (20) and the second baffle plate (22) for sequentially pushing the balls from small to large to drop for pitching; The pre-dividing part (25) comprises a rotating disk (250), the inner cavity of the tube body (10) is coaxially rotatably mounted with the rotating disk (250) located above the second baffle plate (22), the rotating disk (250) is evenly provided with circular holes (251) along its circumference, the upper end of the rotating disk (250) is coaxially fixedly mounted with a guide platform (252), and the guide platform (252) is a truncated cone-shaped structure with a small upper part and a large lower part, and the tube body (10) is provided with an actuator (4) for driving the rotating disk (250) to rotate; The actuator (4) comprises a rotating shaft (40), the upper end of the guide platform (252) is fixedly mounted with the rotating shaft (40), the upper end of the rotating shaft (40) rotates and passes through the top plate (12), a bracket (41) with an inverted shaped structure is arranged above the top plate (12), two vertical sections of the bracket (41) are respectively fixedly connected to two support seats (24), a stepper motor (42) is fixedly mounted on the upper end of the bracket (41), and the output shaft of the stepper motor (42) rotates and passes through the bracket (41) and is fixedly connected to the rotating shaft (40).

2. The intelligent fracturing wellhead device capable of automatically throwing a ball according to claim 1, characterized in that: The pushing portion (26) includes a pushing plate (260), and the tube body (10) is provided with a pushing plate (260) located between the first baffle plate (20) and the second baffle plate (22). The left and right ends of the pushing plate (260) slide through the tube body (10) and the corresponding support seat (24). A rectangular hole (261) is opened at a position corresponding to the U-shaped hole (23) on the support seat (24). A limit plate (262) is symmetrically installed in the rectangular hole (261) for sliding left and right. A fixed plate is fixedly installed at the left end of the pushing plate (260), and a return spring (263) is evenly installed between the right end of the fixed plate and the corresponding support seat (24). The pushing plate (260) is provided with an adjusting member (5) for adjusting the distance between the two limit plates (262), and the left limit plate (262) is provided with a linkage member (6) for cooperating with the turntable (250) to drive the pushing plate (260) to move.

3. The intelligent fracturing wellhead device capable of automatically throwing a ball according to claim 2, characterized in that: The adjusting member (5) comprises a mounting groove (50), the pushing plate (260) is provided with a mounting groove (50) located at the rear side of the rectangular hole (261), the right end of the mounting groove (50) passes through the pushing plate (260), the inner wall of the mounting groove (50) is provided with a slide groove (51) corresponding to the limiting plate (262) and connected to the rectangular hole (261), and a sliding member fixedly connected to the corresponding limiting plate (262) is slidably installed in the slide groove (51). A spur gear (52) located between two limit plates (262) is rotatably mounted on the inner wall of the slider and the mounting groove (50); racks (53) are meshed on the upper and lower sides of the spur gear (52); the right slider is fixedly connected to the upper rack (53); the left slider is fixedly connected to the lower rack (53); an electric push rod (54) is fixedly mounted on the right end of the push plate (260); and the telescopic section of the electric push rod (54) is fixedly connected to the lower rack (53).

4. The intelligent fracturing wellhead device capable of automatically throwing a ball according to claim 2, characterized in that: The linkage member (6) comprises a support, a support is fixedly installed at the left end of the left limit plate (262), a connecting rod (60) is rotatably installed on the support through a torsion spring rod, a notch (61) connected to the rectangular hole (261) is provided on the push plate (260), a support plate (62) fixedly connected to the left limit plate (262) is slidably installed in the notch (61), and the support plate (62) is located above the support, a guide column (63) is slidably penetrated on the support plate (62), and a waist groove is provided on the left end of the connecting rod (60). A roller shaft is fixed on the guide post (63) and slides through the waist groove. A slideway is provided on the second baffle plate (22) and cooperates with the guide post (63). The slideway is connected with the U-shaped hole (23). A through groove (64) is provided on the left limit plate (262). A bonding plate (65) is fixedly installed on the right end of the connecting rod (60) after movably passing through the through groove (64). The bonding plate (65) and the connecting rod (60) form a T-shaped structure. A driving component is provided on the turntable (250) and contacts with the guide post (63) for driving the push plate (260) to move.

5. The intelligent fracturing wellhead device capable of automatically throwing balls according to claim 4, characterized in that: The driving assembly comprises a circular groove (66). The lower end of the rotating disk (250) is coaxially provided with a circular groove (66). A pushing plate (67) is fixedly installed in the circular groove (66). The pushing plate (67) is provided with an inwardly concave arc surface.

6. The intelligent fracturing wellhead device capable of automatically throwing a ball according to claim 1, characterized in that: The opening and closing mechanism (3) comprises a cover plate (30), the lower end of the top plate (12) is rotatably mounted with the cover plate (30) for sealing the upper port of the tube body (10), and a handle (31) is fixedly mounted on the cover plate (30).

Images