CN216005056U

CN216005056U - A screw drive well casing lifting machine for producing oil field

Info

Publication number: CN216005056U
Application number: CN202121091522.9U
Authority: CN
Inventors: 张伟; 张萍; 胡小荣
Original assignee: Heilongjiang Mcnison Equipment Manufacturing Co ltd
Current assignee: Heilongjiang McNeeson Equipment Manufacturing Co.,Ltd.
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2022-03-11
Anticipated expiration: 2031-05-14

Abstract

The utility model discloses a spiral driving well pipe hoist used in the field of oil extraction, which comprises a platform guardrail, an operating platform and a derrick, wherein the derrick consists of a diversion sheave, a steel wire rope, a balance weight and a balance weight guide rail, and the surface of the derrick is fixedly connected with the operating platform. Through the counter weight, the transmission guide rail, rolling element and screw rod, the setting of stopper isotructure, form from the centering function, restraint rotatory reverse moment of torsion and radial displacement of subassembly such as screw rod, the effect that safe and reliable of being convenient for promoted has been reached, through the transmission guide rail, the screw rod, driven conical gear, the setting of motor and initiative conical gear isotructure, the effect of being convenient for improve the conveying capacity and improve the lifting height has been reached, mutually support between each structure of whole device, the target of the steady reliable operation of the device of being convenient for has been realized, the bad condition that the lifting machine hoisting member trouble caused the load to fall has been avoided appearing, the potential safety hazard is reduced, the user demand is satisfied, it is comparatively convenient to use.

Description

A screw drive well casing lifting machine for producing oil field

Technical Field

The utility model relates to the technical field of mechanical lifting equipment, in particular to a spiral driving well pipe lifting machine used in the field of oil extraction.

Background

The hoist is large mechanical equipment which works by changing potential energy, such as a mine hoist, a dam-crossing hoist and the like, in a broad sense, an elevator, a crown block, a winch, a crane, a hoist and the like can be called as the hoist, the hoist generally refers to large mechanical equipment with high power and high lifting capacity, and the working process is completed by dragging a steel wire rope of a flexible part and transported goods to move up and down through power machinery.

The existing elevator for maintaining the well pipe of the oil production well is mostly used for dragging a steel wire rope of a flexible part through power machinery to lift, the well pipe below the bottom surface is lifted to the ground to be maintained or replaced, the conveying capacity is low, the lifting height is limited, the elevator is difficult to operate stably and reliably in a long-time use process, the condition that the load falls due to the fact that the elevator lifts part faults is easy to occur, certain potential safety hazards exist, the use requirement is difficult to meet, and the elevator is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a spiral drive well pipe elevator used in the field of oil extraction, and solves the problems that the existing well pipe elevator has limited lifting height and is difficult to stably and reliably operate, so that the load falls.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a spiral drive well casing elevator for the oil extraction field comprises a platform guardrail, an operation platform and a derrick, wherein the derrick consists of a diversion sheave, a steel wire rope, a balance weight and a balance weight guide rail, the surface of the derrick is fixedly connected with the operation platform, the diversion sheave is fixedly connected with the top surface of the derrick, the steel wire rope is meshed with the surface of the diversion sheave, the top surface of the balance weight is fixedly connected with one end of the steel wire rope, and two side surfaces of the balance weight are in sliding connection with the balance weight guide rail; and operation platform, platform guardrail install in the derrick outside, the transmission guide rail subassembly is installed to the inside of derrick, the transmission guide rail subassembly comprises transmission guide rail, connecting rod and rolling element, and transmission guide rail's inner wall surface and connecting rod fixed connection, and the top and the rolling element of connecting rod rotate and be connected, the medial surface sliding connection of transmission guide rail subassembly has screw drive system, and the transmission guide rail subassembly comprises transmission guide rail, connecting rod and rolling element, and transmission guide rail's inner wall surface and connecting rod fixed connection, and the top and the rolling element of connecting rod rotate and be connected. The spiral driving system consists of a fixed frame, an installation plate, an installation hole, a main bearing seat, a screw rod, a transmission shaft, a driven conical gear, a secondary bearing seat, a brake, an encoder, a motor shaft, a driving conical gear and a lifting shaft seat, wherein the back surface of the fixed frame is fixedly connected with the installation plate, the front surface of the installation plate is provided with the installation hole in a penetrating way, the main bearing seat is fixedly connected with the installation plate through the installation hole, the main bearing seat is rotatably connected with the screw rod, the transmission shaft is fixedly connected with the top surface and the bottom surface of the screw rod, the driven conical gear is fixedly connected with the surface of the transmission shaft, the secondary bearing seat is rotatably connected with the surface of the transmission shaft, the brake is fixedly connected with the surface of the transmission shaft, the encoder is fixedly connected with the top surface of the transmission shaft, the motor is fixedly connected with the front surface of the fixed frame, the motor shaft is fixedly connected with the output end of the motor, and the driving conical gear is fixedly connected with the surface of the motor shaft, and the lifting shaft seat is fixedly connected with the front surface of the fixing frame and is positioned right below the motor.

The rolling bodies are arranged in a spiral line at the inner side of the transmission guide rail and matched with the screw rod.

The number of the secondary bearing seats is two, the two secondary bearing seats are fixedly connected with the mounting plate through mounting holes, the screw is a trapezoidal screw, and the other end of the steel wire rope is fixedly connected with the top surface of the fixing frame.

The driven conical gear is meshed with the driving conical gear, and the lifting shaft seat is used for bearing a well pipe.

Compared with the prior art, the utility model has the beneficial effects that: the spiral driving well pipe hoister for oil extraction field is characterized in that a well pipe is hung on a hoisting shaft seat through a connecting piece, a motor drives a screw to rotate, the screw is in contact with a rolling body which is distributed in a space spiral line on a transmission guide rail assembly and is rotated to realize conversion to linear motion, so that a spiral driving system and the well pipe are driven to do linear motion, a fixing frame drives a balancing weight to slide up and down in the balancing weight guide rail through a steel wire rope and a reverse rope wheel when the spiral driving system and the well pipe ascend or descend, thereby realizing the well pipe replacement and maintenance process, a self-centering function is formed through arrangement of structures such as the balancing weight, the transmission guide rail assembly, the rolling body, the screw and a brake, and the like, so that the rotary reverse torque and radial displacement of the assemblies such as the screw are restrained, the effect of safe and reliable hoisting is achieved, and the hoisting effect is realized through the transmission guide rail assembly, the screw, a driven bevel gear, a motor is used for driving motor for driving the motor to drive the screw to drive the motor to rotate the motor to drive the balance weight to move up and drive the balance weight to move up to the well to move up to, The motor and the driving bevel gear and other structures are arranged, so that the effects of facilitating improvement of conveying capacity and improving of lifting height are achieved, the mutual matching among the structures of the whole device realizes the purpose of facilitating stable and reliable operation of the device, the problem that the load falls due to the fact that lifting parts of the lifting machine fail is avoided, the potential safety hazard is reduced, the use requirement is met, and the use is convenient.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a schematic view of a derrick structure of the utility model;

FIG. 3 is a front view of the drive rail assembly of the present invention;

FIG. 4 is a bottom view of the drive rail assembly and screw assembly of the present invention;

FIG. 5 is a front view of the drive rail assembly of the present invention assembled with a threaded rod;

FIG. 6 is a front view of the fixing frame structure of the present invention;

FIG. 7 is a front sectional view of the screw and main bearing seat structure of the present invention;

FIG. 8 is a side sectional view of the structure of the screw driving system such as the fixing frame of the present invention.

In the figure: 1 platform guardrail, 101 derrick, 102 operation platform, 103 diversion sheave, 104 wire rope, 105 counterweight, 106 counterweight guide rail, 2 transmission guide rail component, 201 transmission guide rail, 202 connecting rod, 203 rolling body, 3 screw drive system, 301 fixing frame, 302 mounting plate, 303 mounting hole, 304 main bearing seat, 305 screw rod, 306 transmission shaft, 307 driven bevel gear, 308 secondary bearing seat, 309 brake, 310 encoder, 311 motor, 312 motor shaft, 313 driving bevel gear, 314 lifting shaft seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1-8, a spiral drive well pipe elevator for oil extraction field, comprising a platform guardrail 1, an operation platform 102, a derrick 101, the above parts are adopted in the prior art, the derrick 101 is composed of a diversion sheave 103, a steel wire rope 104, a balance weight 105 and a balance weight guide rail 106, the surface of the derrick 101 is fixedly connected with the operation platform 102, the diversion sheave 103 is fixedly connected with the top surface of the derrick 101, the steel wire rope 104 is engaged with the surface of the diversion sheave 103, the top surface of the balance weight 105 is fixedly connected with one end of the steel wire rope 104, and two side surfaces of the balance weight 105 are slidably connected with the balance weight guide rail 106; the counterweight 105 is similar to a counterweight of an elevator, the weight of the counterweight counteracts partial tension of a lifting well pipe, the energy saving and consumption reduction effects are achieved, the operation platform 102 and the platform guardrail 1 are installed outside the derrick 101, the transmission guide rail assembly 2 is installed inside the derrick 101, the transmission guide rail assembly 2 is composed of a transmission guide rail 201, a connecting rod 202 and a rolling body 203, the inner wall surface of the transmission guide rail 201 is fixedly connected with the connecting rod 202, the top of the connecting rod 202 is rotatably connected with the rolling body 203, the transmission guide rail 201 is formed by bending a steel plate on a large-scale plate folding machine, the transmission guide rail is similar to a 'lack' hexahedron, namely a pentahedron, the internal folding angle is 120 degrees, as shown in figure 4, two adjacent openings in the five surfaces are slightly narrow, the other three surfaces are equal in width, and the openings form a longitudinal groove, so that a fixing frame 301, a lateral installation motor 311 and other equipment parts are installed, the longitudinal groove is also a 'slide way' of up and down reciprocating operation, such as the fixing frame 301 and the motor 311, the spiral driving system 3 is installed on the rolling body 203 on the inner side surface of the transmission guide rail assembly 2, and the sliding friction of the original screw rod in the thread is changed into rolling friction, which is a technical breakthrough, so that the resistance and the energy consumption are obviously reduced, and the service life is also prolonged. The inner side surface of the transmission guide rail component 2 is connected with a spiral driving system 3 in a rolling way to form a large main body part of the utility model, the spiral driving system 3 consists of a fixed frame 301, a mounting plate 302, a mounting hole 303, a main bearing seat 304, a screw 305, a transmission shaft 306, a driven conical gear 307, a secondary bearing seat 308, a brake 309, an encoder 310, a motor 311, a motor shaft 312, a driving conical gear 313 and a lifting shaft seat 314, the back surface of the fixed frame 301 is fixedly connected with the mounting plate 302, the mounting plate 302 is in a U-shaped integral shape, two side vertical surfaces are buckled outside a longitudinal groove formed by the opening of the transmission guide rail component 2 part, as shown in figures 1 and 6, the front surface of the mounting plate 302 is provided with the mounting hole 303 in a penetrating way, the main bearing seat 304 is fixedly connected with the mounting plate 302 through the mounting hole 303, the main bearing seat 304 is rotatably connected with the screw 305, and the transmission shaft 306 is fixedly connected with the top surface and the bottom surface of the screw 305, the driven bevel gear 307 is fixedly connected with the surface of the transmission shaft 306, the secondary bearing seat 308 is rotatably connected with the surface of the transmission shaft 306, the brake 309 is fixedly connected with the surface of the transmission shaft 306, the encoder 310 is fixedly connected with the top surface of the transmission shaft 306, the motor 311 is fixedly connected with the front surface of the fixed frame 301, the motor shaft 312 is fixedly connected with the output end of the motor 311, the driving bevel gear 313 is fixedly connected with the surface of the motor shaft 312, the lifting shaft seat 314 is fixedly connected with the front surface of the fixed frame 301, and the lifting shaft seat 314 is positioned under the motor 311.

The rolling body 203 has a rectangular cross section, and is usually provided with a roller with a bearing, a guide wheel on the side of the roller shutter, and various casters, and is fixed on the transmission guide rail 201 through a bolt at one end of the connecting rod 202 via a nut, and the other end is fixed at the axis of the rolling body 203, so that the rolling body 203 is axially located on the same inscribed circle, as shown in fig. 4, the inscribed circle corresponds to the axial outline of the screw 305. The rolling elements 203 are arranged in a spiral inside the transmission guide rail 201 and can be matched with the screw 305, as shown in fig. 3, 4 and 5. The screw 305 is screwed in a spiral direction through either the upper or lower end of the transmission rail assembly 2, like a bolt screw nut.

The number of the secondary bearing seats 308 is two, the two secondary bearing seats 308 are fixedly connected with the mounting plate 302 through the mounting hole 303, the screw 305 is a trapezoidal screw, the axial section of the contact surface of the spiral surface and the rolling body 203 is a horizontal plane, and the other end of the steel wire rope 104 is fixedly connected with the top surface of the fixing frame 301.

The driven bevel gear 307 is intermeshed with the driving bevel gear 313 and the lifting shaft seat 314 is used to carry the well tubular and the connection of the well tubular is described below.

The electrical components in the specification are all electrically connected with an external master controller and a 380V master controller, and the master controller can be a conventional known device which is controlled by a computer and the like.

When in use: the upper end of the well pipe is connected to a clamp by a thread, a pin shaft penetrates into a lifting shaft seat 314 to be fixed, a motor 311 (preferably a reversible motor) drives a motor shaft 312 and a driving bevel gear 313 to rotate, the driving bevel gear 313 drives a driven bevel gear 307, a transmission shaft 306 and a screw 305 to rotate, the screw 305 is contacted with rolling bodies 203 which are distributed in a space spiral line on a transmission guide rail component 2 to generate linear motion of spiral ascending or descending, so that the conversion from rotation to linear motion is realized, thereby driving a spiral driving system 3 and the well pipe to do linear motion, when the spiral driving system 3 and the well pipe ascend or descend, a fixed frame 301 drives a balance weight 105 to slide up and down in the balance weight guide rail 106 through a steel wire rope 104 and a diversion sheave 103, the spiral driving system 3 is ensured to be driven to run stably, an encoder 310 records the displacement of the well pipe, and a brake 309 is controlled by a computer and a sensor, and brake shutdown is guaranteed when a fault occurs.

To sum up, the well casing is connected to the lifting shaft seat 314, the motor 311 drives the screw 305 to rotate, the screw 305 contacts with the rolling elements 203 which are distributed in a space spiral line on the transmission guide rail assembly 2, so as to realize the conversion from the circumferential rotation of the motor to the linear motion, thereby driving the spiral driving system 3 and the well casing to do the linear motion, when the spiral driving system 3 and the well casing ascend or descend, the fixing frame 301 drives the balance weight 105 to slide up and down in the balance weight guide rail 106 through the steel wire rope 104 and the return rope pulley 103, thereby realizing the oil pumping process, through the arrangement of the structures of the balance weight 105, the transmission guide rail 201, the rolling elements 203, the screw 305, the brake 309 and the like, a self-centering function is formed, the reverse torque and the radial displacement of the rotation of the screw 305 and the like are restrained, the effect of safe and reliable lifting is achieved, and the effects of the transmission guide rail 201, the screw 305, the driven conical gear 307, the screw 305 and the brake 309 and the like are achieved, The motor 311 and the driving bevel gear 313 and other structures are arranged, so that the effects of facilitating improvement of conveying capacity and improving of lifting height are achieved, mutual matching among all structures of the whole device is achieved, the aim of facilitating stable and reliable operation of the device is achieved, the bad situation that a load falls due to the fact that a lifting part of a lifting machine breaks down is avoided, potential safety hazards are reduced, the use requirement is met, the use is convenient, and the problem that the load falls due to the fact that the lifting height of the existing well pipe lifting machine is limited and stable and reliable operation is difficult to achieve is solved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the present invention, and it is fully feasible to adopt the principles of the present invention to modify the present invention into a drive for a pumping unit to lift an oil pump from a well for reciprocating up and down to become a pumping unit of the same principles, the scope of the present invention being defined by the appended claims and their equivalents.

Claims

1. A spiral drive well pipe hoist for the oil extraction field comprises a platform guardrail (1), an operating platform (102) and a derrick (101), and is characterized in that the derrick (101) consists of a diversion sheave (103), a steel wire rope (104), a balance weight (105) and a balance weight guide rail (106), the surface of the derrick (101) is fixedly connected with the operating platform (102), the diversion sheave (103) is fixedly connected with the top surface of the derrick (101), the steel wire rope (104) is meshed with the surface of the diversion sheave (103), the top surface of the balance weight (105) is fixedly connected with one end of the steel wire rope (104), and two side surfaces of the balance weight (105) are in sliding connection with the balance weight guide rail (106); the operating platform (102) and the platform guardrail (1) are arranged outside the derrick (101), the transmission guide rail assembly (2) is arranged inside the derrick (101), the transmission guide rail assembly (2) consists of a transmission guide rail (201), a connecting rod (202) and a rolling body (203), the surface of the inner wall of the transmission guide rail (201) is fixedly connected with the connecting rod (202), the top of the connecting rod (202) is rotatably connected with the rolling body (203), and the inner side surface of the transmission guide rail assembly (2) is slidably connected with a screw driving system (3); the spiral driving system (3) is composed of a fixed frame (301), a mounting plate (302), a mounting hole (303), a main bearing seat (304), a screw (305), a transmission shaft (306), a driven bevel gear (307), a secondary bearing seat (308), a brake (309), an encoder (310), a motor (311), a motor shaft (312), a driving bevel gear (313) and a lifting shaft seat (314), wherein the back surface of the fixed frame (301) is fixedly connected with the mounting plate (302), the front surface of the mounting plate (302) is provided with the mounting hole (303) in a penetrating way, the main bearing seat (304) is fixedly connected with the mounting plate (302) through the mounting hole (303), the main bearing seat (304) is rotatably connected with the screw (305), the transmission shaft (306) is fixedly connected with the top surface and the bottom surface of the screw (305), and the driven bevel gear (307) is fixedly connected with the surface of the transmission shaft (306), the secondary bearing seat (308) is rotatably connected with the surface of the transmission shaft (306), the brake (309) is fixedly connected with the surface of the transmission shaft (306), the encoder (310) is fixedly connected with the top surface of the transmission shaft (306), the motor (311) is fixedly connected with the front surface of the fixed frame (301), the motor shaft (312) is fixedly connected with the output end of the motor (311), the driving bevel gear (313) is fixedly connected with the surface of the motor shaft (312), the lifting shaft seat (314) is fixedly connected with the front surface of the fixed frame (301), and the lifting shaft seat (314) is positioned under the motor (311).

2. A screw-driven well-pipe elevator for use in oil recovery applications according to claim 1, characterized in that the rolling elements (203) are rectangular in cross-section, the rolling elements (203) being arranged helically inside the drive rail (201) and cooperating with the screw (305).

3. A screw-driven well-pipe elevator for use in oil recovery as claimed in claim 1, wherein the number of said secondary bearing seats (308) is two, and both secondary bearing seats (308) are fixedly connected to the mounting plate (302) through the mounting holes (303), and the screw (305) is a trapezoidal screw, and the other end of the steel cable (104) is fixedly connected to the top surface of the fixed frame (301).

4. A screw driven well elevator for use in oil recovery applications according to claim 1, characterized in that the driven bevel gear (307) is intermeshed with the driving bevel gear (313), and that the elevator shaft seat (314) is adapted to carry well tubing.