CN108649444A - A kind of multi-chamber metal armouring central switch equipment - Google Patents

A kind of multi-chamber metal armouring central switch equipment Download PDF

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Publication number
CN108649444A
CN108649444A CN201810690927.0A CN201810690927A CN108649444A CN 108649444 A CN108649444 A CN 108649444A CN 201810690927 A CN201810690927 A CN 201810690927A CN 108649444 A CN108649444 A CN 108649444A
Authority
CN
China
Prior art keywords
main
central switch
metal armouring
switch equipment
chamber metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810690927.0A
Other languages
Chinese (zh)
Inventor
苏星
苏文
苏文龙
孙庆
张丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Zhongtian Electric Co Ltd
Original Assignee
Jiangsu Zhongtian Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Zhongtian Electric Co Ltd filed Critical Jiangsu Zhongtian Electric Co Ltd
Priority to CN201810690927.0A priority Critical patent/CN108649444A/en
Publication of CN108649444A publication Critical patent/CN108649444A/en
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/28Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/30Cabinet-type casings; Parts thereof or accessories therefor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/30Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/303Bases or feet
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56Cooling; Ventilation
    • H02B1/565Cooling; Ventilation for cabinets

Abstract

The invention discloses a kind of multi-chamber metal armouring central switch equipments, including main body, the outer surface of main body is equipped with PLC controller, the input terminal of PLC controller is electrically connected with the output end of external power supply, the inside upper surface of main body is equipped with partition board, the both side surface of partition board and the inner surface of main body offer sliding slot, placement plate is slidably connected in sliding slot, the side surface of partition board and the side surface of placement plate offer through-hole, fixed link is plugged in through-hole, the lower surface of main body is evenly arranged with lower margin, the height of lower margin is not less than 20 centimeters, the side surface of main body is equipped with damp-proof device, the bottom inner surface of main body is equipped with endothermic water tank.This multi-chamber metal armouring central switch equipment, it is feature-rich, has the function of heat dissipation, ventilation, dust-proof, moisture-proof, good protective action can be played to electrical equipment, service life is extended, while convenient for adjusting, can need to adjust chamber size according to using, it is easy to use, it is easy to operate.

Description

A kind of multi-chamber metal armouring central switch equipment
Technical field
The present invention relates to intermediate switchgear cabinet technical field, specially a kind of multi-chamber metal armouring middle switch is set It is standby.
Background technology
Intermediate switchgear cabinet, full name are metal armouring middle disposed withdrawn type switchgear.Belong to high voltage distribution installation, most senior engineer Make voltage 3.6/7.2/12kV, is the indoor complete distribution of three-phase alternating current 50Hz sectionalized single busbar connections system or double-bus segmented system Device.For receiving and the network power with 3.6-12kV, and control protection, monitoring and measuring are carried out to power circuit.In set Formula switchgear is mainly used for power plant, the power transmission of medium and small generator, electric system secondary substation by electricity, power transmission, industrial and mineral The starting etc. of the distribution and Large-scale High-Pressure motor of enterprises and institutions.Existing multi-chamber metal armouring middle switch is set It is standby, largely have a single function, do not have heat dissipation, ventilation, it is dust-proof, moisture-proof the effects that, shorten the service life of electrical equipment, together Shi Buyi adjust, cannot according to use need adjust chamber size, it is inconvenient for use.
Invention content
The technical problem to be solved by the present invention is to overcome the existing defects, provides a kind of multi-chamber metal armouring middle and opens Equipment is closed, it is feature-rich, have the function of heat dissipation, divulge information, is dust-proof, moisture-proof, good protection can be played to electrical equipment and is made With, service life is extended, while convenient for adjusting, can need to adjust chamber size according to using, it is easy to use, operate letter It is single, it can effectively solve the problems in background technology.
To achieve the above object, the present invention provides the following technical solutions:A kind of multi-chamber metal armouring middle switch is set It is standby, including main body, the outer surface of the main body is equipped with PLC controller, the output of the input terminal and external power supply of PLC controller The inside upper surface of end electrical connection, main body is equipped with partition board, and the both side surface of partition board and the inner surface of main body offer sliding slot, Placement plate is slidably connected in sliding slot, the side surface of partition board and the side surface of placement plate offer through-hole, be plugged in through-hole The lower surface of fixed link, main body is evenly arranged with lower margin, and the height of lower margin is not less than 20 centimeters, and the side surface of main body, which is equipped with, prevents The bottom inner surface of damp device, main body is equipped with endothermic water tank, and the upper surface of main body is equipped with cooling water tank, cooling water tank and heat absorption It is connected to by circulation pipe between water tank, circulation pipe is equipped with circulating pump, and the side surface of main body is evenly arranged with ventilation duct, ventilation duct It is equipped with wind turbine, the input terminal of wind turbine and the input terminal of circulating pump are electrically connected with the output end of PLC controller, are equipped in main body Monitoring device.
As a preferred technical solution of the present invention, the monitoring device includes being arranged in one side surface of body interior Another side surface of temperature sensor, body interior is equipped with humidity sensor, the output end and temperature sensor of humidity sensor Output end be electrically connected with the input terminal of PLC controller, the outer surface of main body is equipped with alarm device.
As a preferred technical solution of the present invention, the alarm device includes the buzzing that side surface outside the main body is arranged Device and indicator light, the input terminal of buzzer and the input terminal of indicator light are electrically connected with the output end of PLC controller.
As a preferred technical solution of the present invention, the damp-proof device includes being opened in putting for main body side surface lower portions Slot is set, slidably connects desiccant box in placing groove, the side surface of desiccant box opens up fluted.
As a preferred technical solution of the present invention, the upper surface of the cooling water tank is equipped with mounting bracket, mounting bracket Inner surface is equipped with mounting plate, and mounting plate is equipped with radiator fan, the input terminal of radiator fan and the output end electricity of PLC controller Connection.
As a preferred technical solution of the present invention, the outer surface of the ventilation duct is threaded with threaded sleeve, The inner surface of threaded sleeve is equipped with Air Filter.
As a preferred technical solution of the present invention, the side surface of the main body is hinged with cabinet door, the side surface of cabinet door Equipped with handle, the side surface of handle is equipped with anti-skid chequer.
As a preferred technical solution of the present invention, the side surface of the cabinet door offers observation panel, observation panel inside Equipped with observation window.
As a preferred technical solution of the present invention, the side surface of the cabinet door offers lockhole, the side surface of cabinet door It slidably connects and offers locked groove corresponding with jam plate with the matched jam plate of lockhole, the side surface of another cabinet door.
As a preferred technical solution of the present invention, the quantity of the through-hole is no less than three groups, and no less than three groups Through-hole is equidistantly positioned.
Compared with prior art, the beneficial effects of the invention are as follows:This multi-chamber metal armouring central switch equipment, function It is abundant, have the function of heat dissipation, divulge information, is dust-proof, moisture-proof, good protective action can be played to electrical equipment, extending makes With the service life, while convenient for adjusting, can need to adjust chamber size according to using, easy to use, easy to operate, placement plate is used for Place electrical equipment, placement plate can in sliding slot slidable adjustment position, can need to adjust according to using, by by fixed link It is inserted into through-hole and carrys out fixed placement plate, easy to adjust, easy to operate, the height of lower margin is not less than 20 centimeters, can play one Fixed moisture-proof role, desiccant box are placed in the placing groove of lower body part, further improve moisture-proof for containing drier Effect plays good protective effect to equipment, can be to master by endothermic water tank, cooling water tank, circulation pipe and circulating pump Internal portion carries out water-cooling, improves heat dissipation effect, the radiator fan on cooling water tank can accelerate water cooling in cooling water tank The cooling of liquid accelerates radiating rate, ventilation duct and wind turbine for divulging information, and the inner surface of threaded sleeve is equipped with Air Filter, prevents Only a large amount of dusts enter in main body in ventilation process, while cleaning easy to disassemble, more convenient to use.
Description of the drawings
Fig. 1 is schematic structural view of the invention;
Fig. 2 is positive structure diagram of the present invention;
Fig. 3 is side structure schematic view of the present invention.
In figure:1 main body, 2 PLC controllers, 3 partition boards, 31 sliding slots, 32 placement plates, 33 through-holes, 34 fixed links, 4 ventilation ducts, 41 wind turbines, 42 threaded sleeves, 43 Air Filters, 5 cooling water tanks, 51 circulation pipes, 52 circulating pumps, 53 mounting brackets, 54 mounting plates, 55 dissipate It is Hot-air fan, 56 endothermic water tanks, 6 cabinet doors, 61 observation windows, 62 handles, 63 locked grooves, 64 jam plates, 65 lockholes, 7 desiccant box, 71 recessed Slot, 8 buzzers, 81 indicator lights, 82 temperature sensors, 83 humidity sensors, 9 lower margins.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, the present invention provides a kind of technical solution:A kind of multi-chamber metal armouring central switch equipment, Including main body 1, the outer surface of main body 1 is equipped with PLC controller 2, the input terminal of PLC controller 2 and the output end of external power supply The inside upper surface of electrical connection, the model siemens PLC of PLC controller 2 used, main body 1 is equipped with partition board 3, partition board 3 The inner surface of both side surface and main body 1 offers sliding slot 31, and placement plate 32 is slidably connected in sliding slot 31, and placement plate 32 is used In placing electrical equipment, the side surface of partition board 3 and the side surface of placement plate 32 offer through-hole 33, and the quantity of through-hole 33 is many In three groups, and no less than three groups of through-hole 33 is equidistantly positioned, and fixed link 34 is plugged in through-hole 33, and placement plate 32 can be in cunning Slidable adjustment position in slot 31 can need to adjust according to using, by the way that fixed link 34 to be inserted into through-hole 32 come fixed placement Plate 32, easy to adjust, easy to operate, the lower surface of main body 1 is evenly arranged with lower margin 9, and the height of lower margin 9 is public not less than 20 Point, certain moisture-proof role can be played, the side surface of main body 1 is equipped with damp-proof device, and damp-proof device includes being opened in 1 side of main body The placing groove of surface lower portions, desiccant box 7 is slidably connected in placing groove, and desiccant box 7 is placed on master for containing drier In the placing groove of 1 lower part of body, dampproof effect is further improved, good protective effect is played to equipment, desiccant box 7 Side surface opens up fluted, and convenient for pulling out desiccant box 7, the bottom inner surface of main body 1 is equipped with endothermic water tank 56, and main body 1 Upper surface is equipped with cooling water tank 5, is connected to by circulation pipe 51 between cooling water tank 5 and endothermic water tank 56, circulation pipe 51 is equipped with Circulating pump 52 can carry out water cooling to 1 inside of main body by endothermic water tank 56, cooling water tank 5, circulation pipe 51 and circulating pump 52 and dissipate Heat improves heat dissipation effect, and the upper surface of cooling water tank 5 is equipped with mounting bracket 53, and the inner surface of mounting bracket 53 is equipped with mounting plate 54, mounting plate 54 is equipped with radiator fan 55, and the radiator fan 55 on cooling water tank 5 can accelerate water cooling liquid in cooling water tank 5 Cooling, accelerate radiating rate, the input terminal of radiator fan 55 is electrically connected with the output end of PLC controller 2, the side of main body 1 Surface is evenly arranged with ventilation duct 4, and ventilation duct 4 is equipped with wind turbine 41, and the input terminal of wind turbine 41 and the input terminal of circulating pump 52 are equal It is electrically connected with the output end of PLC controller 2, for divulging information, the outer surface of ventilation duct 4 is threadedly coupled for ventilation duct 4 and wind turbine 41 There are threaded sleeve 42, the inner surface of threaded sleeve 42 to be equipped with Air Filter 43, prevent a large amount of dusts in ventilation process from entering main body 1 It is interior, at the same cleaning easy to disassemble, it is more convenient to use, monitoring device is equipped in main body 1, monitoring device includes being arranged in main body 1 The temperature sensor 82 on interior side surface, another side surface inside main body 1 are equipped with humidity sensor 83, humidity sensor 83 Output end and the output end of temperature sensor 82 be electrically connected with the input terminal of PLC controller 2, temperature sensor 82 and humidity Sensor 83 is respectively used to the temperature and humidity in detection main body 1, and staff passes through the display screen in PLC controller 2 Check, the outer surface of main body 1 is equipped with alarm device, alarm device include be arranged 1 outer surface of main body buzzer 8 and refer to Show that lamp 81, the input terminal of buzzer 8 and the input terminal of indicator light 81 are electrically connected with the output end of PLC controller 2, passes through acousto-optic Alarm can remind staff to check in time, and PLC controller 2 controls wind turbine 41, circulating pump 52, radiator fan 55, buzzer 8, the mode of indicator light 81, temperature sensor 82 and humidity sensor 83 is method commonly used in the prior art, the side of main body 1 Surface is hinged with cabinet door 6, and the side surface of cabinet door 6 is equipped with handle 62, and the side surface of handle 62 is equipped with anti-skid chequer, the side table of cabinet door 6 Face offers observation panel, is equipped with observation window 61 on the inside of observation panel, convenient for watching inner case in real time, the side surface of cabinet door 6 opens up Have a lockhole 65, the side surface of cabinet door 6 slidably connect with 65 matched jam plate 64 of lockhole, the side surface of another cabinet door 6 opens up There is locked groove 63 corresponding with jam plate 64, for locking cabinet door 6, the multi-chamber metal armouring central switch equipment is feature-rich, Have the function of heat dissipation, ventilation, dust-proof, moisture-proof, good protective action can be played to electrical equipment, is extended using the longevity Life, while convenient for adjusting, can need to adjust chamber size according to using, it is easy to use, it is easy to operate.
When in use:According to needs are used, the position of placement plate 32 is adjusted, is then inserted into fixed link 34 corresponding logical In hole 33, electrical equipment is placed, closes cabinet door 6, operates PLC controller 2, sets relevant parameter, opens temperature sensor 82 and humidity sensor 83, temperature sensor 82 and humidity sensor 83 detect temperature value and humidity value inside main body 1 respectively And corresponding signal is transmitted to PLC controller 2, circulating pump 52, cycle are opened when PLC controller 2 judges that temperature is higher than setting value Pump 52 is by the water cooling liquid in 51 circulation heat absorption water tank 56 of circulation pipe and cooling water tank 5, to radiating inside main body 1;Work as PLC When controller 2 judges that humidity is higher than setting value, wind turbine 41 is opened, it is big in ventilation process by ventilation duct 4 to divulging information in main body 1 Part dust is stopped by Air Filter 43, prevents a large amount of dusts from entering in main body 1, and playing good protection to electrical equipment makees With extending the service life of equipment.
The present invention is feature-rich, has the function of heat dissipation, divulges information, is dust-proof, moisture-proof, can be played to electrical equipment good Protective action extends service life, while convenient for adjusting, and can need to adjust chamber size according to using, easy to use, behaviour Make it is simple, placement plate 32 for placing electrical equipment, placement plate 32 can in sliding slot 31 slidable adjustment position, can be according to making It is easy to adjust by the way that fixed link 34 to be inserted into come fixed placement plate 32 in through-hole 32 with needing to adjust, it is easy to operate, lower margin 9 Height is not less than 20 centimeters, can play certain moisture-proof role, and desiccant box 7 is placed on main body 1 for containing drier In the placing groove of lower part, dampproof effect is further improved, good protective effect is played to equipment, passes through endothermic water tank 56, cooling water tank 5, circulation pipe 51 and circulating pump 52 can carry out water-cooling to 1 inside of main body, improve heat dissipation effect, dissipate Radiator fan 55 on boiler 5 can accelerate the cooling of water cooling liquid in cooling water tank 5, accelerate radiating rate, 4 He of ventilation duct For wind turbine 41 for divulging information, the inner surface of threaded sleeve 42 is equipped with Air Filter 43, prevents a large amount of dusts in ventilation process from entering master In body 1, while cleaning easy to disassemble, it is more convenient to use.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace And modification, the scope of the present invention is defined by the appended.

Claims (10)

1. a kind of multi-chamber metal armouring central switch equipment, including main body (1), it is characterised in that:Outside the main body (1) Side surface is equipped with PLC controller (2), and the input terminal of PLC controller (2) is electrically connected with the output end of external power supply, main body (1) Inside upper surface is equipped with partition board (3), and the both side surface of partition board (3) and the inner surface of main body (1) offer sliding slot (31), sliding Placement plate (32) is slidably connected in slot (31), the side surface of partition board (3) and the side surface of placement plate (32) offer through-hole (33), it is plugged with fixed link (34) in through-hole (33), the lower surface of main body (1) is evenly arranged with lower margin (9), the height of lower margin (9) Degree is not less than 20 centimeters, and the side surface of main body (1) is equipped with damp-proof device, and the bottom inner surface of main body (1) is equipped with endothermic water tank (56), and the upper surface of main body (1) is equipped with cooling water tank (5), passes through circulation pipe between cooling water tank (5) and endothermic water tank (56) (51) it is connected to, circulation pipe (51) is equipped with circulating pump (52), and the side surface of main body (1) is evenly arranged with ventilation duct (4), ventilation duct (4) wind turbine (41), the output of the input terminal of wind turbine (41) and the input terminal of circulating pump (52) with PLC controller (2) are equipped with End electrical connection, main body (1) is interior to be equipped with monitoring device.
2. a kind of multi-chamber metal armouring central switch equipment according to claim 1, it is characterised in that:The monitoring Device includes temperature sensor (82) of the setting on main body (1) interior side surface, and the internal another side surface of main body (1) is equipped with Humidity sensor (83), the output end of humidity sensor (83) and the output end of temperature sensor (82) with PLC controller (2) Input terminal electrical connection, the outer surface of main body (1) is equipped with alarm device.
3. a kind of multi-chamber metal armouring central switch equipment according to claim 2, it is characterised in that:The alarm Device includes buzzer (8) and indicator light (81) of the setting in main body (1) outer surface, the input terminal of buzzer (8) and instruction The input terminal of lamp (81) is electrically connected with the output end of PLC controller (2).
4. a kind of multi-chamber metal armouring central switch equipment according to claim 1, it is characterised in that:It is described moisture-proof Device includes the placing groove for being opened in main body (1) side surface lower part, and desiccant box (7), drier are slidably connected in placing groove The side surface of box (7) opens up fluted.
5. a kind of multi-chamber metal armouring central switch equipment according to claim 1, it is characterised in that:The heat dissipation The upper surface of water tank (5) is equipped with mounting bracket (53), and the inner surface of mounting bracket (53) is equipped with mounting plate (54), on mounting plate (54) Equipped with radiator fan (55), the input terminal of radiator fan (55) is electrically connected with the output end of PLC controller (2).
6. a kind of multi-chamber metal armouring central switch equipment according to claim 1, it is characterised in that:The ventilation The outer surface of pipe (4) is threaded with threaded sleeve (42), and the inner surface of threaded sleeve (42) is equipped with Air Filter (43).
7. a kind of multi-chamber metal armouring central switch equipment according to claim 1, it is characterised in that:The main body (1) side surface is hinged with cabinet door (6), and the side surface of cabinet door (6) is equipped with handle (62), and the side surface of handle (62) is equipped with anti-skidding Line.
8. a kind of multi-chamber metal armouring central switch equipment according to claim 7, it is characterised in that:The cabinet door (6) side surface offers observation panel, and observation window (61) is equipped on the inside of observation panel.
9. a kind of multi-chamber metal armouring central switch equipment according to claim 7, it is characterised in that:The cabinet door (6) side surface offers lockhole (65), and the side surface of cabinet door (6) slidably connects and lockhole (65) matched jam plate (64), The side surface of another cabinet door (6) offers locked groove (63) corresponding with jam plate (64).
10. a kind of multi-chamber metal armouring central switch equipment according to claim 1, it is characterised in that:It is described logical The quantity in hole (33) is no less than three groups, and no less than three groups of through-hole (33) is equidistantly positioned.
CN201810690927.0A 2018-06-28 2018-06-28 A kind of multi-chamber metal armouring central switch equipment Withdrawn CN108649444A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810690927.0A CN108649444A (en) 2018-06-28 2018-06-28 A kind of multi-chamber metal armouring central switch equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810690927.0A CN108649444A (en) 2018-06-28 2018-06-28 A kind of multi-chamber metal armouring central switch equipment

Publications (1)

Publication Number Publication Date
CN108649444A true CN108649444A (en) 2018-10-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810690927.0A Withdrawn CN108649444A (en) 2018-06-28 2018-06-28 A kind of multi-chamber metal armouring central switch equipment

Country Status (1)

Country Link
CN (1) CN108649444A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110312401A (en) * 2019-07-29 2019-10-08 潍坊护理职业学院 One kind being directed to computer network security protective device
CN112272475A (en) * 2020-11-03 2021-01-26 南通亚振电力科技有限公司 Multi-cavity circulating ventilation type control cabinet and production process thereof
CN112911854A (en) * 2021-01-15 2021-06-04 深圳宇德金昌贸易有限公司 Embedded intervention terminal cabinet for NB-LOT Internet of things

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110312401A (en) * 2019-07-29 2019-10-08 潍坊护理职业学院 One kind being directed to computer network security protective device
CN112272475A (en) * 2020-11-03 2021-01-26 南通亚振电力科技有限公司 Multi-cavity circulating ventilation type control cabinet and production process thereof
CN112272475B (en) * 2020-11-03 2021-09-17 南通亚振电力科技有限公司 Multi-cavity circulating ventilation type control cabinet
CN112911854A (en) * 2021-01-15 2021-06-04 深圳宇德金昌贸易有限公司 Embedded intervention terminal cabinet for NB-LOT Internet of things

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Application publication date: 20181012

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