CN112234882A - ZH-ZYK type quick-start intelligent direct-current oil pump motor control cabinet - Google Patents
ZH-ZYK type quick-start intelligent direct-current oil pump motor control cabinet Download PDFInfo
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- CN112234882A CN112234882A CN202011125222.8A CN202011125222A CN112234882A CN 112234882 A CN112234882 A CN 112234882A CN 202011125222 A CN202011125222 A CN 202011125222A CN 112234882 A CN112234882 A CN 112234882A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0811—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for dc motors
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to the technical field of motor control cabinets, in particular to a ZH-ZYK type quick-start intelligent direct-current oil pump motor control cabinet which comprises a motor control cabinet shell, wherein an IGBT switch is arranged on the front surface of a cabinet door at a position below a button with a lamp, a large-screen man-machine panel is arranged at the upper end inside the motor control cabinet shell, a water tank is arranged at the lower end inside the motor control cabinet shell, and a remote DCS remote control module, a local control module, an information memory, a fault self-diagnosis module, start/stop protection, an excitation broken wire and overcurrent protection module, an IGBT module overcurrent and overtemperature, an armature current and voltage overrun module and an alarm are arranged on the rear surface inside the motor control cabinet shell. The invention adopts two modes of remote control (DCS) and local control, and has perfect fault self-diagnosis function: the system comprises start/stop protection, excitation wire breakage and overcurrent protection, an IGBT module overcurrent and overtemperature alarm, an armature current and voltage overrun alarm and a large-screen Chinese man-machine interface.
Description
Technical Field
The invention relates to the technical field of motor control cabinets, in particular to a ZH-ZYK type quick-start intelligent direct-current oil pump motor control cabinet.
Background
The generator lubricating oil system of the power plant comprises a lubricating oil cabinet, a main oil pump, an alternating-current lubricating oil pump, an oil injector, an oil cooler, an accident direct-current oil pump, a top shaft oil pump system, an oil fume separation device, an oil purification system and the like. The system is required to provide reliable lubricating (sealing) oil sources for main bearings, thrust bearings, barring devices and related sealing oil systems of the steam turbine and the generator, and pressure oil control for ensuring safe operation of the system is provided.
However, but motor control cabinet on the existing market is in case the system out of control will lead to steam turbine and generator to damage and shut down, the loss is very serious, the drive control of accident direct current oil pump unreasonably leads to breaking down, general motor control cabinet course of operation can produce great heat, untimely heat dissipation can lead to the device to damage, the use of most devices is comparatively single, can not make long-range two control modes with the local control combine, be unfavorable for the use convenience of device, need connect outside display device when most devices use, the convenience of use is lower. Therefore, a ZH-ZYK type quick-start intelligent dc oil pump motor control cabinet is provided by those skilled in the art to solve the problems in the background art.
Disclosure of Invention
The invention aims to provide a ZH-ZYK type quick-start intelligent direct-current oil pump motor control cabinet to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a ZH-ZYK type opens formula intelligence direct current oil pump motor control cabinet soon, includes the motor control cabinet casing, the front surface of motor control cabinet casing rotates installs the cabinet door, install on the front surface upper end of cabinet door and take the lamp button, the lock is installed to front surface one side of cabinet door, the front surface of cabinet door is located the below position department of taking the lamp button and installs the IGBT switch, the upper surface of motor control cabinet casing is provided with the exhaust net, one side surface lower extreme of motor control cabinet casing installs the component of admitting air, the inside upper end of motor control cabinet casing installs large screen man-machine panel, the water tank is installed to the inside lower extreme of motor control cabinet casing, the inside rear surface mounting of motor control cabinet casing has distant place DCS remote control module, local control module, information storage ware, self-diagnosis fault module, start/shutdown protection, The device comprises an excitation broken wire and overcurrent protection module, an IGBT module overcurrent and overtemperature and armature current and voltage overrun module and an alarm.
As a further scheme of the invention: the circulating pipe is installed to inside one side of motor control cabinet casing, the position department that the inside lower surface of motor control cabinet casing closes on the water tank installs the water pump, the window is installed to front surface one side of water tank, the filler is installed to the front surface upper end of motor control cabinet casing, the lower surface mounting of exhaust net has the air discharge fan, the lower surface mounting of air discharge fan has the water-cooling row, the one side surface mounting of component of admitting air has the filter screen that admits air, the inside packing of the component of admitting air has the moisture absorption cotton.
As a still further scheme of the invention: the output end electrode of the IGBT switch is connected with the input ends of a start/stop protection module, an excitation broken wire and an overcurrent protection module, the output end electrode of the start/stop protection module, the excitation broken wire and the overcurrent protection module is connected with the output end electrode of the IGBT module over-temperature and armature current and voltage overrun module, the output end electrode of the IGBT module over-temperature and armature current and voltage overrun module is connected with the output end of a button with a lamp, the output end electrode of the button with the lamp is connected with the input ends of a remote DCS remote control module and a local control module, the remote DCS remote control module and the output end electrode of the local control module are connected with the human-computer panel output end of a fault self-diagnosis module and the input end of an alarm, and the output end electrode of the fault self-.
As a still further scheme of the invention: the output end of the water tank is in through connection with the input end of the water pump, the output end of the water pump is in through connection with the input end of the water cooling bar through a circulating pipe, the output end of the water cooling bar is in through connection with the input end of the water tank, and the input end of the water tank is in through connection with the output end of the circulating pipe.
As a still further scheme of the invention: the exhaust fan is provided with two sets ofly with the water-cooling row, and is two sets of the exhaust fan corresponds with the water-cooling row and installs the lower surface one end position department at the exhaust net, the wind direction of exhaust fan upwards.
As a still further scheme of the invention: the air inlet filter screen is made of chemical fiber materials, the moisture absorption cotton is made of fireproof cotton, and activated carbon particles are arranged inside the moisture absorption cotton.
Compared with the prior art, the invention has the beneficial effects that: the ZH-ZYK type intelligent direct current oil pump motor control cabinet is a high and new technology product integrating intelligent power electronic devices, non-inductive absorption technology, microelectronic technology, digital PWM technology, PLC technology and redundancy self-adaptive technology, and can reliably control the full-digital smooth soft start and soft stop of a direct current motor, the current smoothly rises or falls according to an optimal control curve, the impact and interference of the motor start to a direct current system are eliminated, a high-frequency high-power IGBT switching device is adopted to replace the traditional direct current contactor touch switching mode, various defects of the direct current contactor control switching are fundamentally eliminated, a remote (DCS) mode and a local control mode are adopted, a main pipe pressure low signal can be linked to start a direct current oil pump, and the perfect fault self-diagnosis function is achieved: the system comprises start/stop protection, excitation disconnection and overcurrent protection, an IGBT module overcurrent and overtemperature alarm, an armature current and voltage overrun alarm, a large-screen Chinese man-machine interface, and is simple and convenient to operate, equipment operation and alarm information are stored for a long time and convenient to look up, a full-digital pulse width modulation mode is adopted, the current and voltage of a direct current motor are collected at a high speed in real time, the collected data are analyzed and processed by applying a digital PID and a variable speed integral algorithm, correct control quantity is output to adjust the output duty ratio of the IGBT, so that smooth and flexible control over the current of the direct current motor is realized, impact and interference on the direct current system are eliminated, due to the adoption of the digital PID and the variable speed integral algorithm, in the whole closed-loop feedback control process, speed regulation static error is eliminated, the anti-interference performance and reliability are greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of a ZH-ZYK type quick-start intelligent direct current oil pump motor control cabinet;
FIG. 2 is a schematic view of an opening structure in a ZH-ZYK type quick-start intelligent direct current oil pump motor control cabinet;
FIG. 3 is an open perspective view of a ZH-ZYK type quick start intelligent DC oil pump motor control cabinet;
FIG. 4 is an open perspective view of a ZH-ZYK type quick start intelligent DC oil pump motor control cabinet;
FIG. 5 is a perspective view of an exhaust network in a ZH-ZYK type quick start intelligent DC oil pump motor control cabinet;
FIG. 6 is a perspective view of an air intake member in a ZH-ZYK type quick start intelligent DC oil pump motor control cabinet;
fig. 7 is a control schematic diagram in a ZH-ZYK type quick-start intelligent direct current oil pump motor control cabinet.
In the figure: 1. a motor control cabinet housing; 2. a cabinet door; 3. an air intake member; 4. an exhaust net; 5. a door lock; 6. an IGBT switch; 7. a button with a light; 8. a large screen man-machine panel; 9. a water tank; 10. a water pump; 11. a circulation pipe; 12. a remote DCS remote control module; 13. a local control module; 14. an information storage; 15. a fault self-diagnosis module; 16. a start/stop protection module, an excitation disconnection and overcurrent protection module; 17. the IGBT module is an overcurrent and overtemperature and armature current and voltage overrun module; 18. an alarm; 19. a window is penetrated; 20. a water filling port; 21. an exhaust fan; 22. water cooling and draining; 23. an air inlet filter screen; 24. and (5) moisture absorption cotton.
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.
Referring to fig. 1 to 7, in the embodiment of the present invention, a ZH-ZYK type quick-start intelligent dc oil pump motor control cabinet includes a motor control cabinet housing 1, a cabinet door 2 is rotatably installed on a front surface of the motor control cabinet housing 1, a button with a lamp 7 is installed on an upper end of the front surface of the cabinet door 2, a door lock 5 is installed on one side of the front surface of the cabinet door 2, an IGBT switch 6 is installed on a lower position of the button with a lamp 7 on the front surface of the cabinet door 2, an exhaust net 4 is installed on an upper surface of the motor control cabinet housing 1, an air intake component 3 is installed on a lower end of an outer surface of one side of the motor control cabinet housing 1, a large-screen man-machine panel 8 is installed on an inner upper end of the motor control cabinet housing 1, a water tank 9 is installed on an inner lower end of the motor control cabinet housing 1, a remote DCS remote control module 12, An information memory 14, a fault self-diagnosis module 15, a start/stop protection, an excitation broken line and overcurrent protection module 16, an IGBT module overcurrent over-temperature and armature current and voltage over-limit module 17 and an alarm 18, wherein an output terminal electrode of an IGBT switch 6 is connected with the input terminals of the start/stop protection, the excitation broken line and overcurrent protection module 16, the start/stop protection, the excitation broken line and overcurrent protection module 16 is connected with the output terminal electrode of the IGBT module overcurrent over-temperature and armature current and voltage over-limit module 17, the output terminal electrode of the armature current and voltage over-limit module 17 is connected with the output terminal of a lamp button 7, the output terminal electrode of the lamp button 7 is connected with the input terminals of a remote DCS remote control module 12 and a local control module 13, the output terminal electrodes of the remote large-screen DCS remote control module 12 and the local control module 13 are connected with the human input terminals of the fault self-diagnosis module 15 and, an output end electrode of the fault self-diagnosis module 15 is connected with an information memory 14 and an input end of an alarm 18, firstly, a device is started through an IGBT switch 6, start/stop protection is carried out, an excitation broken wire and overcurrent protection module 16 operates to protect a starting structure, the IGBT module is operated to protect an overcurrent and overtemperature, an armature current and voltage overrun module 17 operates to detect the overcurrent and overtemperature, a remote DCS remote control module 12 remote control device can be used, a control system of a local control module 13 can be operated through a large-screen man-machine panel 8 to control the local control device, the fault self-diagnosis module 15 operates to diagnose problems in real time during the operation of the device, information after diagnosis is stored in the information memory 14, an alarm 18 gives an alarm when the problems occur, air is introduced through an air inlet component 3, heat in the motor control cabinet shell 1 is discharged through an exhaust network 4, and finally, the use is completed, and stored information in the, and performing consultation.
In fig. 4, 5, 6: the water cooling system is characterized in that a circulating pipe 11 is installed on one side inside a motor control cabinet shell 1, a water pump 10 is installed at a position, close to a water tank 9, of the lower surface inside the motor control cabinet shell 1, a through window 19 is installed on one side of the front surface of the water tank 9, a water filling port 20 is installed at the upper end of the front surface of the motor control cabinet shell 1, an exhaust fan 21 is installed on the lower surface of an exhaust net 4, a water cooling row 22 is installed on the lower surface of the exhaust fan 21, an air inlet filter screen 23 is installed on the outer surface of one side of an air inlet component 3, moisture absorption cotton 24 is filled inside the air inlet component 3, the output end of the water tank 9 is connected with the input end of the water pump 10 in a penetrating manner, the output end of the water pump 10 is connected with the input end of the water cooling row 22 in a penetrating manner, two groups of exhaust fans 21 and water cooling rows 22 are correspondingly arranged at one end of the lower surface of the exhaust net 4, the air direction of the exhaust fans 21 is upward, the air inlet filter screen 23 is made of chemical fiber material, the moisture absorption cotton 24 is made of fireproof cotton material, and the inside of the moisture absorption cotton 24 is provided with active carbon particles, the water pump 10 runs during the running process of the device, water liquid in the water tank 9 is pumped and guided into the inside of the circulating pipe 11, water liquid in the circulating pipe 11 is guided into the inside of the water cooling bar 22, the exhaust fan 21 on the water cooling bar 22 runs, the outside air is pumped and filtered through the air inlet filter screen 23 and the moisture absorption cotton 24 on the air inlet component 3, enters the interior of the shell 1 of the motor control cabinet, the heat in the motor control cabinet shell 1 is discharged through the exhaust network 4, and the heat on the water cooling bar 22 is simultaneously led out, after the heat of the water cooling bar 22 is radiated, the water flows back to the inside of the water tank 9, and the water inside the water tank 9 enters the water pump 10 for circulation.
It should be noted that: an IGBT switch 6 (model number MG400Q1US41 EP N channel IGBT), a remote DCS remote control module 12 (model number JX-300 XP), a local control module 13 (model number RMU 730B-2), an information memory 14, a fault self-diagnosis module 15 (model number CNBR/D), a start/stop protection, excitation disconnection and overcurrent protection module 16 (model number AS-HE 06), an IGBT module overcurrent over-temperature and armature current voltage over-limit module 17 (model number HE15P24 LRN), an alarm 18 (model number KPEG 242), a water pump 10 (model number DC 50D) and an exhaust fan 21 (model number SX8015HB 1).
Example (b): the current and the voltage of the direct current motor are acquired in real time at a high speed by adopting a full-digital pulse width modulation mode, the acquired data are analyzed and processed by applying a digital PID and a variable speed integral algorithm, and the output duty ratio of the IGBT is adjusted by outputting correct control quantity, so that the smooth and flexible control of the current of the direct current motor is realized, the impact and the interference on a direct current system are eliminated, and the speed regulation static error is eliminated in the whole closed loop feedback control process due to the adoption of the digital PID and the variable speed integral algorithm, so that the anti-interference performance and the reliability are greatly improved.
The working principle of the invention is as follows: firstly, an IGBT switch 6 is used for opening a device, a start/stop protection module, an excitation broken wire and overcurrent protection module 16 are operated to protect an opening structure, an IGBT module overcurrent over-temperature and armature current and voltage over-limit module 17 is operated to detect overcurrent over-temperature, a remote DCS remote control module 12 remote control device can be used, a control system of an on-site control module 13 can be operated through a large-screen man-machine panel 8 to control on site, a fault self-diagnosis module 15 operates in real time to diagnose problems in the operation process of the device, the diagnosed information is stored in an information storage 14, an alarm 18 alarms when the problems occur, a water pump 10 operates in the operation process of the device, water in an extraction water tank 9 is introduced into a circulating pipe 11, the water in the circulating pipe 11 is introduced into a water cooling bar 22, an exhaust fan 21 on the water cooling bar 22 operates, and the water is filtered through an air inlet filter screen, The moisture absorption cotton 24 extracts outside air and filters, enters the inside of the motor control cabinet shell 1, the heat inside the motor control cabinet shell 1 is discharged through the exhaust net 4, the heat on the water cooling bar 22 is simultaneously guided out, after the heat of the water cooling bar 22 is dissipated, water liquid flows back to the inside of the water tank 9, the water liquid inside the water tank 9 enters the water pump 10 to circulate, and finally, the use is completed, the stored information inside the information storage 14 can be extracted through the large-screen man-machine panel 8 and is consulted.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The ZH-ZYK type quick-opening intelligent direct-current oil pump motor control cabinet comprises a motor control cabinet shell (1) and is characterized in that a cabinet door (2) is installed on the front surface of the motor control cabinet shell (1) in a rotating mode, a lamp button (7) is installed at the upper end of the front surface of the cabinet door (2), a door lock (5) is installed on one side of the front surface of the cabinet door (2), an IGBT switch (6) is installed at the position, below the lamp button (7), of the front surface of the cabinet door (2), an exhaust net (4) is arranged on the upper surface of the motor control cabinet shell (1), an air inlet component (3) is installed at the lower end of the outer surface of one side of the motor control cabinet shell (1), a large-screen man-machine panel (8) is installed at the upper end of the inside of the motor control cabinet shell (1), a water tank (9) is installed at the lower end of the, the back surface mounting of the inside of motor control cabinet casing (1) has distant place long-range DCS remote control module (12), local control module (13), information memory (14), fault self-diagnosis module (15), start/shut down protection, excitation broken string and overcurrent protection module (16), IGBT module overcurrent excess temperature, armature current voltage transfinites module (17), alarm (18).
2. The ZH-ZYK type quick-start intelligent direct-current oil pump motor control cabinet is characterized in that a circulating pipe (11) is installed on one side of the inside of a motor control cabinet shell (1), a water pump (10) is installed at a position, close to a water tank (9), of the lower surface of the inside of the motor control cabinet shell (1), a through window (19) is installed on one side of the front surface of the water tank (9), a water filling port (20) is installed at the upper end of the front surface of the motor control cabinet shell (1), an exhaust fan (21) is installed on the lower surface of an exhaust net (4), a water cooling row (22) is installed on the lower surface of the exhaust fan (21), an air inlet filter screen (23) is installed on the outer surface of one side of an air inlet component (3), and moisture absorption cotton (24) is filled in the air inlet component (3).
3. The ZH-ZYK type quick start intelligent direct current oil pump motor control cabinet according to claim 1, characterized in that the output terminal electrode of the IGBT switch (6) is connected with the input terminals of start/stop protection, excitation disconnection and overcurrent protection module (16), the output terminal electrode of the start/stop protection, excitation disconnection and overcurrent protection module (16) is connected with the output terminal electrode of the IGBT module overcurrent over-temperature and armature current and voltage over-limit module (17), the output terminal electrode of the IGBT module overcurrent over-temperature and armature current and voltage over-limit module (17) is connected with the output terminal of the lighted button (7), the output terminal electrode of the lighted button (7) is connected with the input terminals of the DCS remote control module (12) and the local control module (13), the remote DCS remote control module (12) and the local control module (13) are connected with the fault self-diagnosis module (15) and the human-machine panel (8) large screen, and an output end electrode of the fault self-diagnosis module (15) is connected with an information memory (14) and an input end of an alarm (18).
4. The ZH-ZYK type quick-start intelligent direct current oil pump motor control cabinet is characterized in that the output end of the water tank (9) is connected with the input end of a water pump (10) in a penetrating way, the output end of the water pump (10) is connected with the input end of a water cooling row (22) in a penetrating way through a circulating pipe (11), the output end of the water cooling row (22) is connected with the input end of the water tank (9) in a penetrating way, and the input end of the water tank (9) is connected with the output end of the circulating pipe (11) in a penetrating way.
5. The ZH-ZYK type quick-start intelligent direct current oil pump motor control cabinet according to claim 2, wherein the exhaust fan (21) and the water cooling bar (22) are provided in two sets, the two sets of exhaust fan (21) and the water cooling bar (22) are correspondingly installed at one end of the lower surface of the exhaust net (4), and the air direction of the exhaust fan (21) is upward.
6. The ZH-ZYK type quick-start intelligent direct current oil pump motor control cabinet as claimed in claim 1, wherein the air inlet filter screen (23) is made of chemical fiber, the moisture absorption cotton (24) is made of fireproof cotton, and activated carbon particles are arranged inside the moisture absorption cotton (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011125222.8A CN112234882A (en) | 2020-10-20 | 2020-10-20 | ZH-ZYK type quick-start intelligent direct-current oil pump motor control cabinet |
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| CN202011125222.8A CN112234882A (en) | 2020-10-20 | 2020-10-20 | ZH-ZYK type quick-start intelligent direct-current oil pump motor control cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112947204A (en) * | 2021-02-25 | 2021-06-11 | 郑州地铁集团有限公司运营分公司 | Control system for oiling machine of electric passenger car gear box |
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| CN211297482U (en) * | 2019-12-13 | 2020-08-18 | 昆明前沿科技开发有限公司 | Outdoor environment-friendly waterproof dustproof converter switch board |
| CN111371253A (en) * | 2020-04-10 | 2020-07-03 | 江西科技学院 | Leakage protection device of mobile generator |
| CN211702830U (en) * | 2020-04-13 | 2020-10-16 | 乐山师范学院 | Heat dissipation device of network security terminal |
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Application publication date: 20210115 |