System for supplying power to top drive pipe processing device

Abstract

The invention relates to a system for supplying power to a top drive pipe processing device, which comprises a transmitting end circuit assembly, a transmitting end, a receiving end and a receiving end circuit assembly, and is characterized in that the transmitting end circuit assembly and the transmitting end are arranged on equipment which is kept static with a top drive box body, and the receiving end and the receiving end circuit assembly are arranged on a rotating part; at least one group of first ferromagnetic materials wound with transmitting coils is arranged in the transmitting end, the transmitting coils are electrically connected with the transmitting end circuit assembly, a plurality of groups of second ferromagnetic materials wound with receiving coils are annularly and uniformly distributed in the receiving end at intervals, the receiving coils are electrically connected with the receiving end circuit assembly, and the transmitting end and the receiving end are distributed at intervals. Therefore, the minimum value of the mutual inductance magnetic flux of the two parts is not lower than a set value. The device has the advantage that the function of uninterruptedly supplying power to the pipe processing device in the rotating process of the top drive rotating head in a non-contact mode is achieved. The system supplies power in a non-contact mode.

Description

Technical Field

[0001] The invention relates to the technical field of top drive power supply, and in particular to a system for supplying power to a top drive pipe processing device. Background Art

[0002] Top drive is the abbreviation of top drive drilling device, which is a drilling device installed inside the derrick and suspended by a traveling block. It can directly rotate the drill pipe from the upper space of the derrick and send it downward along a special guide rail. This device can significantly improve the capacity and efficiency of drilling operations and has become a standard product in the oil drilling industry.

[0003] The pipe handling device includes a swivel head, a lifting ring, a back-up clamp arm and a back-up clamp. It is mainly used for the top drive to disconnect the drill pipe and lift and lower the drill string when the top drive is not drilling. When the top drive is working, the components above the top drive housing are suspended by the drilling rig hook and remain relatively static with the derrick. The pipe handling device needs to pick up and deliver the drill pipe and rotates around the inner sleeve, so there is relative rotation with the housing of the top drive. At present, there are only hydraulic actuators (hydraulic cylinders) on the pipe handling device. The fundamental reason is that the swivel head of the top drive needs to rotate 360 ​​degrees when working. If the control valve group is installed on the pipe handling device, the problem of power supply to the control valve group cannot be solved well. Therefore, the current solution is to install the control valve group on the top drive housing and design several swivel oil circuits on the swivel head. The principle is similar to that of the hydraulic slip ring, which realizes the hydraulic oil delivery without being disturbed by the rotational movement. The hydraulic oil circuit is connected to the hydraulic actuator installed on the pipe handling device, driving the hydraulic actuator to realize hydraulic action. There is currently no proven solution for transmitting other forms of energy to pipe handling devices besides hydraulic energy.

[0004] With the continuous improvement of top drive electrification and intelligence, especially the rise of intelligent monitoring and digital twin technology, the new drilling process not only requires the hydraulic components installed on the pipe handling device to realize hydraulic action, but also requires real-time control of the operating status, operating parameters, and maintenance status of various components on the pipe handling device. This requires the arrangement of various types and a large number of sensors on the pipe handling device. The problem that the existing top drive structure has to face is how to power the equipment on the pipe handling device.

[0005] In the industrial field, there are relatively mature technologies for supplying power to rotating equipment, such as electric slip rings, which use carbon brushes to connect two relatively rotating surfaces and achieve uninterrupted power supply during the mutual rotation by sliding on a predetermined line. This solution cannot be used on top drives for the following reasons: (1) There is a risk of contact sparks generated by the sliding between the brush and the line, and it is difficult to ensure that the entire device is explosion-proof and difficult to meet the high explosion-proof requirements of the top drive. (2) Carbon deposits and mechanical wear problems of carbon brushes also lead to unstable transmission, which restricts the reliability of the equipment.

[0006] Wireless power transmission is another commonly used non-contact power supply method. The existing wireless power supply requires the transmitter and receiver to be stationary relative to each other to ensure the operation of the coupling coil. However, the rotary head of the top drive cannot meet this requirement of traditional wireless power supply during movement, so it cannot be applied to the power supply of the rotary head of the top drive. Patents CN217642882U, CN217183042U, and CN213367425U provide solutions for wireless power transmission between relatively moving objects. However, they have not yet been applied to the power supply of the rotary head of the top drive.

[0007] In the field of industrial robots, a long cable is used to connect the stationary and rotating parts, and a transverse drag chain is used to guide the cable to be wound around the stationary parts in an orderly manner to realize power supply during the rotation process. Although this solution solves the reliability and safety of energy supply, it cannot meet the functional needs of the top drive: (1) When using this method, the number of rotations must be calculated in advance and the length of the cable must be reserved. During the use of the top drive, the number of rotations of the rotary head is generally unpredictable. When the rotation angle of the top drive rotary head is too large, the power supply cable will be torn off, posing a major safety hazard; (2) The transverse drag chain is generally large in size, and the compact structure of the existing top drive is difficult to provide sufficient space for the implementation of this solution.

[0008] Based on this, it is necessary to develop a system that can conveniently power the top drive. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide a system for supplying power to a top drive pipe processing device, which effectively overcomes the defects of the prior art.

[0010] The technical solution of the present invention to solve the above technical problems is as follows:

[0011] A system for supplying power to a top drive pipe processing device comprises a transmitting end circuit assembly, a transmitting end, a receiving end and a receiving end circuit assembly, wherein the transmitting end circuit assembly and the transmitting end are mounted on a device that remains stationary with a top drive housing, and the receiving end and the receiving end circuit assembly are mounted on a rotating component, wherein at least one group of first ferromagnetic materials wound with a transmitting coil is arranged in the transmitting end, and the transmitting coil is electrically connected to the transmitting end circuit assembly, wherein a plurality of groups of second ferromagnetic materials wound with receiving coils are evenly distributed in an annular shape in the receiving end, and the receiving coils are electrically connected to the receiving end circuit assembly, respectively, and the transmitting end and the receiving end are spaced apart and have overlapping parts to ensure that the minimum value of the mutual induction magnetic flux between the two is not lower than a set value.

[0012] Based on the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, the transmitting end includes a fan-shaped transmitting base plate and a transmitting cover plate, one side of the transmitting base plate is provided with a fan-shaped first groove, a plurality of the first ferromagnetic materials are provided and are evenly spaced and installed in the first groove in an arc shape, the transmitting coil is wound on the plurality of the first ferromagnetic materials, the transmitting cover plate is installed on one side of the transmitting base plate and seals and covers the first groove.

[0014] Furthermore, a fan-shaped positioning plate is coaxially provided on the other side of the launch base plate and is perpendicular thereto, and a plurality of first fasteners penetrating therethrough are provided on the positioning plate at intervals along its circumference.

[0015] Furthermore, the above-mentioned receiving end includes a circular receiving base plate and a receiving cover plate, the above-mentioned receiving base plate is coaxially arranged with the above-mentioned transmitting base plate, one side of the above-mentioned receiving base plate is close to one side of the above-mentioned transmitting base plate, and one side of the above-mentioned receiving base plate is provided with a circular second groove, and multiple groups of the above-mentioned second ferromagnetic materials are respectively distributed in the above-mentioned second grooves at even intervals along the circumferential direction, each group of the above-mentioned second ferromagnetic materials includes multiple second ferromagnetic blocks evenly distributed along the circumferential direction, and each group of the above-mentioned second ferromagnetic blocks is respectively wound with a group of the above-mentioned receiving coils, and the above-mentioned receiving cover plate is installed on one side of the above-mentioned receiving base plate and seals and covers the above-mentioned second groove.

[0016] Furthermore, the second groove is filled with cooling medium.

[0017] Furthermore, the first groove is filled with a cooling medium.

[0018] Furthermore, the receiving end circuit assembly is connected to an electricity storage device, and the electricity storage device and the receiving end circuit assembly are respectively connected to electrical equipment of the top drive pipe processing device.

[0019] Furthermore, it also includes a power generation device, and the power generation device is connected to the power storage device.

[0020] The beneficial effects of the present invention are: the structural design is simple and reasonable, and the function of uninterrupted contactless power supply to the pipe processing device during the rotation of the top drive rotary head is realized. The system adopts a non-contact method for power supply, which has the advantage of realizing continuous power supply during the rotational motion compared with the traditional non-contact power supply, and has the advantages of good explosion-proof performance and high reliability compared with the slip ring power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A system for supplying power to a top drive pipe handling device of the present invention;

[0022] Figure 2 A structural diagram of a receiving end in a system for supplying power to a top drive pipe processing device according to the present invention;

[0023] Figure 3The structural cross-sectional view of the receiving end of the system for powering the top drive pipe processing device of the present invention includes:

[0024] Figure 4 A structural diagram of a transmitting end in a system for supplying power to a top drive pipe processing device according to the present invention;

[0025] Figure 5 A structural cross-sectional view of a transmitting end in a system for supplying power to a top drive pipe processing device according to the present invention;

[0026] Figure 6 A position distribution diagram of a receiving coil and a transmitting coil in a system for powering a top drive pipe processing device of the present invention;

[0027] Figure 7 A diagram of installing a system for supplying power to a top drive pipe handling device of the present invention on a top drive;

[0028] Figure 8 This is a schematic diagram of the power supply principle of the system for powering a top drive pipe processing device according to the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Transmitter circuit assembly; 2. Transmitter; 3. Receiving end; 4. Receiving circuit assembly; 5. Power storage device; 6. Solar power generation device; 20. Top drive box; 21. Transmitter coil; 22. First ferromagnetic material; 31. Receiving coil; 32. Second ferromagnetic material; 211. Transmitter base plate; 212. Transmitter cover plate; 213. Positioning plate; 214. First fastener; 311. Receiving base plate; 312. Receiving cover plate. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] Example: Figure 1 , 2As shown in Figures 4, 7 and 8, the system for powering a top drive pipe processing device of this embodiment comprises a transmitting end circuit assembly 1, a transmitting end 2, a receiving end 3 and a receiving end circuit assembly 4. The transmitting end circuit assembly 1 and the transmitting end 2 are installed on a device that remains stationary with a top drive box 20, and the receiving end 3 and the receiving end circuit assembly 4 are installed on a rotating component. At least one group of first ferromagnetic materials 22 with a transmitting coil 21 wound thereon is provided in the transmitting end 2, and the transmitting coil 21 is electrically connected to the transmitting end circuit assembly 1. A plurality of groups of second ferromagnetic materials 32 with receiving coils 31 wound thereon are evenly distributed in an annular shape in the receiving end 3, and the receiving coils 31 are electrically connected to the receiving end circuit assembly 4, respectively. The transmitting end 2 and the receiving end 3 are distributed at intervals and have overlapping parts to ensure that the minimum value of the mutual inductance magnetic flux between the two is not lower than a set value.

[0033] Specific installation as Figure 7 As shown, the transmitting end circuit assembly 1 and the transmitting end 2 are installed on a device that remains stationary with the top drive box 20. The transmitting end circuit assembly 1 is connected to the top drive distribution box. The electric energy is processed into a high-frequency oscillating current by the transmitting end circuit assembly 1 and becomes a high-frequency oscillating magnetic field by the transmitting end 2. The receiving end 3 and the receiving end circuit assembly 4 are installed on the pipe processing device and remain relatively stationary with the rotary head a (equivalent to the rotating component in the above embodiment), and can rotate with the rotary head a. The receiving end 3 can induce an alternating electric field in the alternating magnetic field, which is processed into a stable power supply by the receiving end circuit assembly 4 and can be directly supplied to the electrical equipment on the pipe processing device for use or stored for standby. When the magnetic coupling of the coil is affected or fails, the standby stored power can be supplied to the electrical equipment on the pipe processing device. After reasonable calculation, the number, size and combination of the coils (receiving coil 31 and transmitting coil 21) arranged inside the receiving end 3 and the transmitting end 2 can ensure sufficient mutual inductance between the transmitting end 2 and the receiving end 3 when the top drive rotary head a rotates to any angle, so as to achieve stable power transmission.

[0034] More specifically, the transmitting end circuit assembly 1 is installed on the lower end surface of the top drive housing 20, and the transmitting end 2 is installed on the outside of the large nut b on the top drive housing 20. The transmitting end circuit assembly 1 and the transmitting end 2 are connected by a cable, and the cable passes through the hole on the inner sleeve c on the top drive housing 20, so the rotation of the slewing head a will not cause damage to the connecting cable. The receiving end 3 is installed on the lower end surface of the slewing head a. After installation, it is ensured that the receiving coil 31 and the transmitting coil 21 remain parallel, and the receiving end 3 and the transmitting end 2 maintain a gap of several millimeters. The receiving end circuit assembly 4 is installed on the slewing head a, connected to the receiving end 3 by a cable and remains stationary.

[0035] In this embodiment, the power generation device may also be a generator driven by a hydraulic motor, and the hydraulic motor is driven by the hydraulic pressure on the slewing head.

[0036] It should be noted that: by setting up power generation devices and power storage devices to enhance the reliability and emergency handling capability of the entire device, when the magnetic coupling of the coil is affected, fails or the transmission power is insufficient, the power storage device and the power generation device can, when necessary, supply power to the electrical equipment on the pipe processing device.

[0037] The whole system has the characteristics of simple and reasonable structural design, small size and compact installation, and realizes the function of uninterrupted contactless power supply to the pipe handling device during the rotation of the top drive rotary head. The system adopts non-contact power supply. Compared with the traditional non-contact power supply, it has the advantage of continuous power supply during the rotation movement, and compared with the slip ring power supply, it has the advantages of good explosion-proof performance and high reliability. It solves the problem of power supply while the top drive pipe handling device is rotating, and overcomes the shortcomings of the commonly used electric slip ring power supply not being explosion-proof, the drag chain power transmission device having strict requirements on the travel, and the traditional non-contact power transmission requiring to remain still.

[0038] As a preferred embodiment, Figure 5 As shown, the transmitting end 2 includes a fan-shaped transmitting base plate 211 and a transmitting cover plate 212. A fan-shaped first groove is provided on one side of the transmitting base plate 211. A plurality of first ferromagnetic materials 22 are provided and are evenly spaced in an arc shape in the first groove. The transmitting coil 21 is wound on the plurality of first ferromagnetic materials 22. The transmitting cover plate 212 is installed on one side of the transmitting base plate 211 and seals and covers the first groove.

[0039] In the above implementation scheme, the high-frequency oscillating current can be effectively converted into a high-frequency oscillating magnetic field by the first ferromagnetic material 22 and the transmitting coil 21 arranged in the first groove, and then the receiving end 3 is used to induce an alternating electric field in the alternating magnetic field, which is processed into a stable power supply by the receiving end circuit assembly 4. The overall structural design is simple and the layout is compact.

[0040] In this embodiment, a sector-shaped positioning plate 213 is coaxially disposed perpendicular to the other side of the transmitting bottom plate 211, and a plurality of first fasteners 214 are disposed at intervals along the circumference of the positioning plate 213. The design of the positioning plate 213 and the first fasteners 214 facilitates the assembly of the transmitting end 2 and the large nut, and the first fasteners 214 can be conventional bolts, which are assembled with the screw holes on the outer periphery of the large nut.

[0041] As a preferred embodiment, Figure 2 , 3As shown, the receiving end 3 includes a circular receiving base plate 311 and a receiving cover plate 312. The receiving base plate 311 is coaxially arranged with the transmitting base plate 211. One side of the receiving base plate 311 is close to one side of the transmitting base plate 211. A circular second groove is provided on one side of the receiving base plate 311. A plurality of groups of the second ferromagnetic materials 32 are respectively distributed in the second grooves at uniform intervals along the circumferential direction. Each group of the second ferromagnetic materials 32 includes a plurality of second ferromagnetic blocks uniformly distributed along the circumferential direction. A group of the receiving coils 31 are respectively wound on the plurality of second ferromagnetic blocks in each group. The receiving cover plate 312 is installed on one side of the receiving base plate 311 and seals and covers the second groove.

[0042] In the above embodiment, if Figure 6 , 7 As shown, the shape design of the receiving end 3 is adapted to the shape design of the transmitting end 2. The two adopt a coaxially distributed fan-shaped and circular ring structure. The two have an overlapping part in the axial direction. The overlapping part can ensure that when the receiving end 3 is driven by the rotating head a to rotate relative to the transmitting end 2, the area of ​​the overlapping part is consistent, ensuring the minimum value of the mutual inductance magnetic flux between the two. The minimum value is greater than or equal to the set value, ensuring the stability of power supply. That is to say, as described above: whether the rotating head is moving or stopped at a certain angle, the receiving coil 31 and the transmitting coil 21 with pre-calculated parameters can always maintain a sufficient mutual inductance, realizing stable and efficient power transmission.

[0043] In this embodiment, the second groove is filled with a cooling medium, which can promptly dissipate the heat generated by the receiving coil 31. The receiving cover plate 312 is a circular cover plate adapted to the second groove, and is connected and fixed to the receiving bottom plate 311 by bolts passing through it.

[0044] In this embodiment, the first groove is filled with a cooling medium, which can promptly dissipate the heat generated by the transmitting coil 21. The transmitting cover plate 212 is a fan-shaped cover plate adapted to the first groove, and is connected and fixed to the transmitting base plate 211 by bolts passing through it.

[0045] In this embodiment, a power generation device 6 is also installed at the rotary head a (the power generation device can be a solar power generation device, a wind power generation device or other devices that can generate electrical energy). The power generation device 6 and the power storage device (the power storage device 5, which uses an existing capacitor power storage device, can also use a battery, a flywheel energy storage or other forms of power storage devices) are connected by Figure 8 The principle shown ensures the stability of the entire power supply system.

[0046] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0047] In addition, the terms "first" and "second" 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" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. 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] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A system for supplying power to a top drive pipe handling device, characterized in that: The invention comprises a transmitting end circuit assembly (1), a transmitting end (2), a receiving end (3) and a receiving end circuit assembly (4), wherein the transmitting end circuit assembly (1) and the transmitting end (2) are mounted on a device that remains stationary with a top drive box (20), and the receiving end (3) and the receiving end circuit assembly (4) are mounted on a rotating component. The transmitting end (2) is provided with at least one group of first ferromagnetic materials (22) wound with a transmitting coil (21), and the transmitting coil (21) is electrically connected to the transmitting end circuit assembly (1). The receiving end (3) has multiple groups of second ferromagnetic materials (32) respectively wound with receiving coils (31) distributed in an annular shape and at even intervals, and the receiving coils (31) are respectively electrically connected to the receiving end circuit assembly (4). The transmitting end (2) and the receiving end (3) are distributed at intervals and have overlapping parts to ensure that the minimum value of the mutual induction magnetic flux between the two is not lower than a set value.

2. A system for supplying power to a top drive pipe handling device according to claim 1, characterized in that: The transmitting end (2) comprises a sector-shaped transmitting base plate (211) and a transmitting cover plate (212); one side of the transmitting base plate (211) is provided with a sector-shaped first groove; a plurality of first ferromagnetic materials (22) are provided and are evenly spaced and installed in the first groove in an arc shape; the transmitting coil (21) is wound on the plurality of first ferromagnetic materials (22); the transmitting cover plate (212) is installed on one side of the transmitting base plate (211) and seals and covers the first groove.

3. A system for supplying power to a top drive pipe handling device according to claim 2, characterized in that: A sector-shaped positioning plate (213) is coaxially disposed on the other side of the launch base plate (211) and is perpendicular thereto. A plurality of first fasteners (214) penetrating the positioning plate (213) are disposed at intervals along the circumference thereof.

4. A system for supplying power to a top drive pipe handling device according to claim 2, characterized in that: The receiving end (3) comprises a circular receiving base plate (311) and a receiving cover plate (312); the receiving base plate (311) is coaxially arranged with the transmitting base plate (211); one side of the receiving base plate (311) is close to one side of the transmitting base plate (211); one side of the receiving base plate (311) is provided with a circular second groove; a plurality of groups of the second ferromagnetic materials (32) are respectively distributed in the second groove at even intervals along the circumferential direction; each group of the second ferromagnetic materials (32) comprises a plurality of second ferromagnetic blocks distributed at even intervals along the circumferential direction; a group of the receiving coils (31) are respectively wound around the plurality of second ferromagnetic blocks in each group; the receiving cover plate (312) is mounted on one side of the receiving base plate (311) and seals and covers the second groove.

5. A system for supplying power to a top drive pipe handling device according to claim 4, characterized in that: The second groove is filled with a cooling medium.

6. A system for supplying power to a top drive pipe handling device according to claim 2, characterized in that: The first groove is filled with a cooling medium.

7. A system for supplying power to a top drive pipe handling device according to claim 1, characterized in that: The receiving end circuit assembly (4) is connected to an electric storage device (5), and the electric storage device (5) and the receiving end circuit assembly (4) are respectively connected to electric equipment of a top drive pipe processing device.

8. A system for supplying power to a top drive pipe handling device according to claim 7, characterized in that: It also includes a power generation device (6), wherein the power generation device (6) is connected to the power storage device (5).

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