Manual lifting frequency conversion control system applied to ocean platform

Abstract

The utility model provides a manual lifting frequency conversion control system applied to an ocean platform, which belongs to the field of manual lifting frequency conversion control and comprises a cabinet body, a control loop, a plurality of mounting beams and a plurality of copper bars are arranged in the cabinet body, and an incoming line busbar clamp, an outgoing line busbar clamp, a circuit breaker, a reactor, a frequency converter module and a filter are mounted on each mounting beam. The wire inlet end of the circuit breaker is connected with the wire inlet busbar clamp through a copper bar, the wire outlet end of the circuit breaker is connected with the fast-acting fuse through a copper bar, meanwhile, the fast-acting fuse is installed at the wire inlet end of the electric reactor, and the wire outlet end of the electric reactor is connected with the wire inlet end of the frequency converter module through a copper bar. The wire outlet end of the frequency converter module is connected with the wire inlet end of the filter through a copper bar, and the wire outlet end of the filter is connected with the wire outlet busbar clamp through a copper bar. The device is convenient to maintain, facilitates on-site adjustment and maintenance of a control loop, and can design a harmonic processing scheme in a customized manner according to the characteristics of serious harmonic waves and large harmonic interference of a platform power grid under the working condition of a long cable.

Description

Technical Field

[0001] The utility model relates to the field of artificial lift frequency conversion control, in particular to an artificial lift frequency conversion control system applied to an offshore platform. Background Art

[0002] In the frequency conversion industry, conventional frequency converters are based on conventional working conditions and have the functions of frequency modulation and motor control. The offshore platform environment has large harmonic interference from the power grid, serious harmonics under long cable working conditions, and tight on-site space. Only front-panel maintenance can be performed, making conventional frequency converters and frequency conversion control systems difficult to apply. Specifically, they are: 1) conventional frequency converters and frequency conversion control systems rely only on front-panel maintenance, which is inconvenient for personnel to operate and has the risk of hand injury; 2) after the copper busbar is removed during maintenance, it is easy to cause a messy installation when the copper busbar is reinstalled due to its disorder, wasting time and manpower; 3) due to the limited height of the platform electrical room, it leads to It is inconvenient to remove the top cover and overhaul the fan, which not only wastes time and manpower, but also easily causes damage to the operator's hands during the overhaul due to limited operating space; 4) Long cable conditions in offshore oil fields, without filters, the interference is large; 5) The operating space in front of the panel is small, and the control circuit is inconvenient to overhaul, which not only wastes time and manpower, but also easily causes damage to the operator's hands during the overhaul due to limited operating space; 6) Long cable conditions are prone to unbalanced three-phase current, which causes load damage to the motor; 7) The sea transportation is too bumpy, and the circuit breaker handle is easy to fall off, causing the inverter to short-circuit and shut down. For the long cable conditions in offshore oil fields, a separate filter is currently chosen, but this approach will increase the space occupied by the equipment. Utility Model Content

[0003] In view of this, the utility model aims to propose an artificial lift frequency conversion control system applied to offshore platforms. Aiming at the serious harmonics under long cable working conditions, outgoing line filters and incoming line reactors are provided to effectively reduce the harmonic interference of the platform power grid. At the same time, pull-out top cover, pull-out control circuit and copper busbar numbering structures are provided to facilitate maintenance and on-site repair.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is implemented as follows: an artificial lift frequency conversion control system applied to an offshore platform, comprising a cabinet, a control circuit and a plurality of mounting beams and a plurality of copper bars are arranged in the cabinet, an incoming busbar clamp, an outgoing busbar clamp, a circuit breaker, a reactor, an inverter module and a filter are installed on the mounting beam, the incoming terminal of the circuit breaker is connected to the incoming busbar clamp through a copper bar, the outgoing terminal of the circuit breaker is connected to a fast fuse through a copper bar, and at the same time, the fast fuse is installed on the incoming terminal of the reactor, the outgoing terminal of the reactor is connected to the incoming terminal of the inverter module through a copper bar, the outgoing terminal of the inverter module is connected to the incoming terminal of the filter through a copper bar, and the outgoing terminal of the filter is connected to the outgoing busbar clamp through a copper bar.

[0005] Furthermore, a three-phase current transformer is nested on the copper busbar connected to the outgoing line terminal of the filter and the outgoing line busbar clamp.

[0006] Furthermore, a guide rail is installed on the mounting beam of the left side wall of the cabinet, a control circuit mounting plate is slidably connected to the guide rail, and the control circuit is installed on the control circuit mounting plate.

[0007] Furthermore, a light button and a touch screen are installed on the cabinet door of the cabinet, and the light button and the touch screen are electrically connected to the control circuit respectively.

[0008] Furthermore, adjacent copper bars are fixed with insulators. At the same time, the three phases ABC are marked in yellow, green and red respectively, and the three phases ABC are silk-screened with digital numbers according to the installation order.

[0009] Furthermore, an infrared temperature measuring device is installed in the cabinet, and the infrared temperature measuring device is arranged between the filter and the reactor. At the same time, the infrared temperature measuring device is electrically connected to the control circuit.

[0010] Furthermore, a circuit breaker trustee is arranged in front of the circuit breaker, and the circuit breaker trustee is arranged below the extension handle of the circuit breaker.

[0011] Furthermore, a pull-out air duct is arranged above the inverter module.

[0012] Furthermore, the pull-out air duct includes an outer kit and an inner kit. The inner kit is arranged inside the outer kit. A fastening nut is installed on the inner wall of the inner kit. A through hole is provided on the inner wall of the inner kit on which the fastening nut is installed, and the through hole is connected to the threaded hole of the fastening nut. A long slot is provided on the side wall of the outer kit close to the fastening nut.

[0013] Compared with the prior art, the artificial lift frequency conversion control system applied to the offshore platform described in the utility model has the following advantages:

[0014] (1) The copper busbar led out from the reactor is connected to the inverter module, and the copper busbar led out from the inverter module is connected to the filter to ensure that filtering is performed at both the front and rear ends of the inverter module, thereby reducing the harmonic interference of long cable conditions and platform power grid to the inverter module;

[0015] (2) A three-phase current transformer is embedded on the copper busbar at the output end of the filter, which can monitor the three-phase current when the inverter module is running and provide timely reminders when the three-phase current is unbalanced;

[0016] (3) The characteristic of copper busbars is that adjacent copper busbars are fixed with insulators. The three phases ABC are marked with yellow, green and red colors. The three phases ABC are silk-screened with numbers such as 1, 2, 3, etc. according to their directions. The insulators ensure that the copper busbars are firmly fixed. When the equipment resonates with overcurrent, the copper busbars can be prevented from shaking, thereby reducing the electrical clearance between the copper busbars. The three phase copper busbars ABC are marked with yellow, green and red colors and silk-screened with numbers, so that the assemblers can quickly install them according to the colors and numbers without checking the drawings.

[0017] (4) By installing a control circuit mounting plate on the guide rail, the control circuit is mounted on the control circuit mounting plate. When adjusting the control circuit, the control circuit can be pulled out of the cabinet by pulling out the control circuit mounting plate, and debugging can be carried out outside the cabinet, thereby increasing the operating space for adjusting the control circuit;

[0018] (5) An infrared temperature measuring device is installed inside the cabinet. The infrared temperature measuring device can monitor the temperature rise of major heating components such as filters and reactors in real time to ensure reliable and safe operation of the equipment;

[0019] (6) A circuit breaker trustee is placed in front of the circuit breaker. When the extended handle of the circuit breaker falls off due to long-term transportation vibration, it can ensure that the extended handle falls into the circuit breaker trustee, avoiding the handle overlapping the copper busbar and causing a short circuit between the copper busbars, thereby improving the reliability and safety of the equipment;

[0020] (7) A pull-out air duct is arranged above the inverter module. When mounting the inverter module, the inverter module can be disassembled or installed by lifting the pull-out air duct and then tightening the bolts, which provides convenience for mounting the inverter module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the internal structure of an artificial lift frequency conversion control system applied to an offshore platform according to an embodiment of the utility model;

[0023] Figure 2 This is a schematic structural diagram of an artificial lift frequency conversion control system applied to an offshore platform according to an embodiment of the utility model;

[0024] Figure 3 This is a schematic structural diagram of the pull-out air duct from the front perspective according to an embodiment of the utility model;

[0025] Figure 4It is a schematic structural diagram of the pull-out type air duct from the rear perspective according to an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1. Cabinet; 3. Circuit breaker; 4. Fast fuse; 5. Reactor; 6. Inverter module; 7. Filter; 8. Control circuit; 9. Copper busbar; 10. Insulator; 11. Light button; 12. Touch screen; 13. Pull-out air duct; 14. Guide rail; 15. Control circuit mounting plate; 16. Infrared temperature measuring device; 17. Circuit breaker hosting; 18. Three-phase current transformer; 19. Outer kit; 20. Inner kit; 21. Fastening nut; 22. Long notch. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0030] like Figure 1-Figure 4As shown, the utility model is an artificial lift frequency conversion control system applied to an offshore platform, comprising a cabinet 1, a control circuit 8 and a plurality of mounting beams and a plurality of copper bars 9 are arranged in the cabinet 1, an inlet and outlet busbar clamp, a circuit breaker 3, a reactor 5, a frequency converter module 6 and a filter 7 are installed on the mounting beam, the inlet and outlet busbar clamp comprises an inlet busbar clamp and an outlet busbar clamp, the inlet end of the circuit breaker 3 is connected to the inlet busbar clamp through the copper bar 9, the outlet end of the circuit breaker 3 is connected to the fast fuse 4 through the copper bar 9, and at the same time, the fast The fast fuse 4 is installed on the incoming end of the reactor 5, and the outgoing end of the reactor 5 is connected to the incoming end of the inverter module 6 through the copper bar 9, and the outgoing end of the inverter module 6 is connected to the incoming end of the filter 7 through the copper bar 9, and the outgoing end of the filter 7 is connected to the outgoing busbar clamp through the copper bar 9. Preferably, a three-phase current transformer 18 is nested on the copper bar 9 connected to the outgoing busbar clamp of the filter 7, which can monitor the three-phase current when the frequency conversion system is running, and timely remind when the three-phase current is unbalanced. The copper bar 9 led out of the reactor 5 is connected to the inverter module 6, and the copper bar 9 led out of the inverter module 6 is connected to the filter 7, ensuring that the front and rear ends of the inverter module 6 are filtered, reducing the harmonic interference of the long cable working condition and the platform power grid to the inverter module 6. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is three or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] A guide rail 14 is installed on the mounting beam of the left wall of the cabinet 1, and a control circuit mounting plate 15 is slidably connected to the guide rail 14. The control circuit 8 is installed on the control circuit mounting plate 15. The control circuit 8 is provided with a PLC, a relay, a terminal, a switch power supply, etc., wherein the PLC is used to realize function control; the relay is used to realize circuit on-off control; the terminal realizes line connection; and the switch power supply is used to control the light button 11. The control circuit 8 is used to receive external signals given by the light button 11, the touch screen 12, the infrared temperature measuring device 16, etc., and to provide control functions such as controlling the light button 11, starting the inverter module 6, and starting / stopping the infrared temperature measuring device 16. When adjusting the control circuit 8, by pulling out the control circuit mounting plate 15, the control circuit 8 can be pulled out of the cabinet 1 and debugged outside the cabinet 1, thereby increasing the operating space for adjusting the control circuit 8.

[0032] A light button 11 and a touch screen 12 are installed on the cabinet door of the cabinet body 1. The light button 11 and the touch screen 12 are electrically connected to the control circuit 8 respectively. The light button 11 is used to prompt operation, stop, and fault, and the touch screen 12 is used to input parameters during debugging, personnel input set frequency parameters, view equipment operating parameters, alarm information, etc.

[0033] The incoming busbar clamp and the outgoing busbar clamp have three slots respectively, so correspondingly, the copper busbars 9 connecting the various components are three-phase ABC, and the adjacent copper busbars 9 are fixed with insulators 10. At the same time, the three phases ABC are marked with yellow, green and red colors respectively, and the three phases ABC are silk-screened with digital labels such as 1, 2, 3... in the order of installation. The insulator 10 can ensure that the copper busbar 9 is firmly fixed, and when the equipment resonates with overcurrent, the copper busbar 9 can be prevented from shaking, thereby reducing the electrical gap between the copper busbars 9. The ABC three-phase copper busbars 9 are marked with yellow, green and red colors and silk-screened with 123 numbers, which can ensure that the assemblers can quickly install them according to the colors and numbers without checking the drawings, effectively improving the work efficiency of the staff.

[0034] An infrared temperature measuring device 16 is also installed in the cabinet 1. The infrared temperature measuring device 16 is arranged between the filter 7 and the inductor 5. At the same time, the infrared temperature measuring device 16 is electrically connected to the control circuit 8. The infrared temperature measuring device 16 can be used to monitor the temperature rise of major heating components such as the filter 7 and the inductor 5 in real time. The monitoring results are displayed through the touch screen to ensure reliable and safe operation of the equipment.

[0035] A circuit breaker trustee 17 is arranged in front of the circuit breaker 3, and the circuit breaker trustee 17 is arranged below the extended handle of the circuit breaker 3. When the extended handle of the circuit breaker 3 falls off due to long-term transportation vibration, it can ensure that the extended handle falls into the circuit breaker trustee 17, avoiding the handle overlapping the copper bar 9 and causing the copper bar 9 to short-circuit between phases, thereby improving the reliability and safety of the equipment. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0036] A pull-out air duct 13 is arranged above the inverter module 6. The pull-out air duct 13 includes an outer set 19 and an inner set 20, the inner set 20 is slidably arranged inside the outer set 19, a fastening nut 21 is welded and installed on the inner wall of the inner set 20, a through hole is arranged on the inner wall of the inner set 20 on which the fastening nut 21 is installed, and the through hole is communicated with the threaded hole of the fastening nut 21, and a long notch 22 is penetrated on the side wall of the outer set 19 close to the fastening nut 21. When the inverter module 6 needs to be disassembled and assembled, the pull-out air duct 13 can be lifted by pulling up the inner kit 20. During the process of pulling the inner kit 20 upward, the fastening nut 21 will gradually move up to the position of the long slot 22. At this time, a bolt is used to pass through the long slot 22 and connect and lock the fastening nut 21 to fasten the inner kit 20 and the outer kit 19, so as to expose the top of the inverter module 6 and realize the disassembly or installation of the inverter module 6. Similarly, when the inverter module 6 is disassembled and assembled, it is only necessary to remove the bolts to allow the inner kit 20 to slide down and cover the top of the inverter module 6 again. The pull-out air duct 13 provides convenience for the hanging of the inverter module 6.

[0037] During the actual working process, the control loop 8 receives the infrared temperature measurement signal from the infrared temperature measuring device 16 and can feed it back to the touch screen 12, so that the staff can monitor the temperature rise of the main heating components in real time; at the same time, the control loop 8 can receive the operation, fault, shutdown and other signals provided by the inverter module 6, and feed it back to the light button 11, which is displayed through the light button 11; in addition, the control loop 8 can feed back the received three-phase current signal to the touch screen 12, and receive the parameter setting signal of the touch screen 12 and feed it back to the inverter module 6.

[0038] The utility model connects the copper busbar 9 led out of the reactor 5 to the inverter module 6, and the copper busbar 9 led out of the inverter module 6 to the filter 7, so as to ensure that the front and rear ends of the inverter module 6 are both filtered, and the harmonic interference of the long cable working condition and the platform power grid to the inverter module 6 is reduced. At the same time, based on the working condition of the pre-disk maintenance of the marine platform, the pull-out type air duct 13 and the pull-out type control loop 8 are designed, so that the artificial lift frequency conversion control system applied to the marine platform described in the utility model is convenient for pre-disk maintenance. In addition, the ABC three-phase copper busbar 9 of the utility model is marked with yellow, green and red colors and silk-screened numbers to ensure that the assemblers do not need to check the drawings, and can quickly install according to the colors and numbers, which is convenient for on-site adjustment and repair, and effectively improves the work efficiency.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An artificial lift frequency conversion control system applied to an offshore platform, characterized in that: The invention comprises a cabinet (1), wherein a control circuit (8) and a plurality of mounting beams and a plurality of copper bars (9) are arranged in the cabinet (1), and an incoming busbar clamp, an outgoing busbar clamp, a circuit breaker (3), a reactor (5), a frequency converter module (6) and a filter (7) are mounted on the mounting beam, wherein the incoming end of the circuit breaker (3) is connected to the incoming busbar clamp via the copper bar (9), and the outgoing end of the circuit breaker (3) is connected to a fast fuse (4) via the copper bar (9); at the same time, the fast fuse (4) is mounted on the incoming end of the reactor (5), the outgoing end of the reactor (5) is connected to the incoming end of the frequency converter module (6) via the copper bar (9), the outgoing end of the frequency converter module (6) is connected to the incoming end of the filter (7) via the copper bar (9), and the outgoing end of the filter (7) is connected to the outgoing busbar clamp via the copper bar (9).

2. The artificial lift frequency conversion control system for offshore platforms according to claim 1 is characterized in that: A three-phase current transformer (18) is nested on a copper busbar (9) connected to an outlet terminal of the filter (7) and an outlet busbar clamp.

3. The artificial lift frequency conversion control system for offshore platforms according to claim 1 is characterized in that: A guide rail (14) is installed on the installation beam of the left side wall of the cabinet (1), a control circuit installation plate (15) is slidably connected to the guide rail (14), and the control circuit (8) is installed on the control circuit installation plate (15).

4. The artificial lift frequency conversion control system for offshore platforms according to claim 3 is characterized in that: A light button (11) and a touch screen (12) are installed on the cabinet door of the cabinet body (1), and the light button (11) and the touch screen (12) are electrically connected to the control circuit (8) respectively.

5. The artificial lift frequency conversion control system for offshore platforms according to claim 1 is characterized in that: Adjacent copper bars (9) are fixed with insulators (10). Meanwhile, the three phases A, B, C are respectively marked with yellow, green and red colors, and the three phases A, B, C are respectively silk-screened with digital numbers according to the installation sequence.

6. The artificial lift frequency conversion control system for offshore platforms according to claim 1, characterized in that: An infrared temperature measuring device (16) is also installed in the cabinet (1). The infrared temperature measuring device (16) is arranged between the filter (7) and the reactor (5). At the same time, the infrared temperature measuring device (16) is electrically connected to the control circuit (8).

7. The artificial lift frequency conversion control system for offshore platforms according to claim 1, characterized in that: A circuit breaker trustee (17) is arranged in front of the circuit breaker (3), and the circuit breaker trustee (17) is arranged below the extended handle of the circuit breaker (3).

8. The artificial lift frequency conversion control system for offshore platforms according to claim 1, characterized in that: A pull-out type air duct (13) is arranged above the frequency converter module (6).

9. The artificial lift frequency conversion control system for offshore platforms according to claim 8, characterized in that: The pull-out air duct (13) comprises an outer sleeve (19) and an inner sleeve (20), wherein the inner sleeve (20) is arranged inside the outer sleeve (19), a fastening nut (21) is installed on the inner wall of the inner sleeve (20), a through hole is arranged on the inner wall of the inner sleeve (20) on which the fastening nut (21) is installed, and the through hole is connected to the threaded hole of the fastening nut (21), and a long slot (22) is penetrated on the side wall of the outer sleeve (19) close to the fastening nut (21).

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