CN102868104A - Low-voltage distribution cabinet with pre-alarm device - Google Patents
Low-voltage distribution cabinet with pre-alarm device Download PDFInfo
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- CN102868104A CN102868104A CN2012103350690A CN201210335069A CN102868104A CN 102868104 A CN102868104 A CN 102868104A CN 2012103350690 A CN2012103350690 A CN 2012103350690A CN 201210335069 A CN201210335069 A CN 201210335069A CN 102868104 A CN102868104 A CN 102868104A
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Abstract
The invention relates to a low-voltage distribution cabinet with a pre-alarm device. The low-voltage distribution cabinet with the pre-alarm device comprises a cabinet body and a cabinet door connected with the cabinet body, wherein the cabinet body comprises a breaker chamber, a bus chamber, a cable chamber and a relay chamber which are separated from one another by steel plates; and the relay chamber is also provided with the pre-alarm device. By the adoption of the low-voltage distribution cabinet with the pre-alarm device, not only a fire alarm for an electric arc can be provided, but also the pre-alarm of a flammable and explosive gas can be provided, so that the application range of the device is enlarged. After a control unit of the pre-alarm device is started, the operation of all electric equipment of the distribution cabinet can be frozen, so that the consequence of disasters caused in the situations of unknowing or misoperation can be prevented.
Description
Technical field
The invention belongs to the electric power electrical apparatus field, refer to especially with can be to the electrical fire that may be caused by electric arc or to the low-voltage distribution cabinet of pre-alarming device that explosion gas is arranged in the environment.
Background technology
At present, low-voltage distribution cabinet is provided with certain defencive function, but is the defencive function of antioverloading, anti-short circuit, electric leakage etc. basically, not to electrical fire and to there being the pre-alarm function of flammable explosive gas in the environment.
Can find that by analyzing the electrical fire that had occured fire originates from seldom electric, basically all originate from power distribution cabinet.This mainly be because; the fire of the overwhelming majority at first is to cause occurring the phenomenons such as overload, short circuit or electric leakage with electric a variety of causes; this phenomenon at first is reacted on the power distribution cabinet, if being quick on the draw of power distribution cabinet, each protective circuit can in time open circuit and cut off the electricity supply and each hidden danger is eliminated.But when the reaction of the protective circuit in the power distribution cabinet was insensitive, the device in the power distribution cabinet can not in time be cut off the electricity supply, and will the phenomenons such as electric arc or high temperature will occur by each element in power distribution cabinet, can cause the generation of fire when surpassing certain limit.When in the power distribution cabinet during breaking out of fire, can't cut off the electricity supply by this power distribution cabinet, can only cut off the electricity supply by upper level, but the delay of this time can cause serious consequence.
Be that power distribution cabinet can't be realized pre-alarm to the flammable explosive gas in the environment on the other hand, this mainly is that what at first select is to have the explosion-proof type power distribution cabinet, such as chemical enterprise or mine etc. because in the enterprise that flammable explosive gas is arranged or environment.And in other cases, the possibility that exists because of flammable explosive gas is little, and the cost of explosion-proof type power distribution cabinet is high, and what generally select is the plain edition power distribution cabinet.But in existing domestic consumer, such as residential building, the use of combustion gas is general, when occurring leaking, happens occasionally because opening electric accident of blasting.
For the problems referred to above, prior art proposes the on-line monitoring warning device of electric disaster hidden-trouble, but this monitoring alarm device only can report to the police when fire occurs or after occuring, and can't carry out pre-alarm to disaster hidden-trouble.
Do not mention in the prior art there being flammable explosive gas to realize technology and the document of pre-alarm, existing only is that smoke alarm unit is installed in facility, only can report to the police reaching in the certain density situation to smog.
Summary of the invention
The purpose of this invention is to provide a technical scheme, this technical scheme not only can realize the electric arc in the low-voltage distribution cabinet is carried out pre-alarm, can also realize pre-alarm to the flammable explosive gas in the environment.
The present invention is achieved by the following technical solutions:
Low-voltage distribution cabinet with pre-alarming device includes cabinet, and with the cabinet door that cabinet is connected, described cabinet includes breaker chamber, bus-bar room, and the cable vault, relay bungalow separates with steel plate between described each chamber; Described relay bungalow also is provided with pre-alarming device;
Described breaker chamber is in the front bottom of cabinet, and circuit breaker is connected with operating mechanism by pull bar, and the upper connecting terminal of described circuit breaker is connected with upper isolating switch, and the lower connecting terminal of circuit breaker is connected with current transformer, and described breaker chamber also is provided with pressure relief channels;
Described bus-bar room is in the cabinet upper back, and bus is product shape to be arranged, and bus is connected with upper isolating switch binding post;
Described cable vault is at the rear of cabinet bottom; Described relay bungalow has the terminal board support in the place ahead, cabinet top in the described relay bungalow;
Described pre-alarming device mainly is comprised of detecting signal unit, CPU, display unit, pre-alarm unit, control unit, power subsystem and communication unit;
Be provided with main switch and each electric equipment in the described breaker chamber and be provided with independent control switch; Described above-mentioned switch is electromagnetic switch and connects with the control unit of the indoor pre-alarming device of relay;
Be provided with the control device of each electric equipment in the described breaker chamber, this device is with the control unit connection of the indoor pre-alarming device of relay and by this control unit control.
Wherein, detecting signal unit is comprised of ultrasonic sensor, UV sensor, optical sensor, Smoke Sensor, temperature sensor and gas analysis detector; Ultrasonic sensor and UV sensor are used for electric arc is detected, and realize early warning and the control of electrical fire; Optical sensor, Smoke Sensor and temperature sensor are used for the fire that has occured is detected and realizes warning and the control of electrical fire; The gas analysis detector detects the kind of flammable explosive gas, the content value of gas, realizes to the pre-alarm of fire with to the control of electric equipment.
Wherein, CPU is finished the signal data that detecting signal unit is collected to process, analyze and judge, and the result is transported to control unit and pre-alarm unit for the analyzing and processing circuit take single-chip microcomputer as core.
Wherein, control unit comprises three groups of ACTIVE CONTROL circuit, and first group of ACTIVE CONTROL circuit is the ACTIVE CONTROL circuit of the deal with data in the reception CPU to power distribution cabinet or electric equipment; Second group of ACTIVE CONTROL circuit is local control circuit, and the ACTIVE CONTROL circuit that is comprised of button is used for to the adjustment of CPU or to the artificial adjustment of first group of ACTIVE CONTROL circuit; The 3rd group of ACTIVE CONTROL circuit is remote control unit, is used for the signal pair Central Processing Unit of receiving communication unit or the adjustment of first group of control unit.
Wherein, display unit comprises display and indicator light; Display is used for showing measured value and the alarming value of CPU, and local control unit or remote control unit are to the adjustment parameter value of CPU; Indicator light is used for the pre-alarming device working station indicator;
Power subsystem is for to change alternating current into dc supply, and provides DC power supply to detecting signal unit, CPU, display circuit unit, prealarm circuit unit, control circuit unit and communication unit.
During first group of ACTIVE CONTROL circuit start, when this log-on data was the data that detected by central processing unit for processing gas analysis detector, the Local or Remote that this control circuit freezes each electric equipment control device interruption chambe in operated; When this log-on data was the data that gathered by central processing unit for processing ultrasonic sensor and UV sensor, this control circuit disconnected the upper level switch that is arranged at the electric arc position in the power distribution cabinet; When this log-on data was the data that gathered by central processing unit for processing optical sensor, Smoke Sensor and temperature sensor, this control circuit disconnected and is arranged at master switch in the power distribution cabinet.
The beneficial effect that the present invention compares with prior art is:
1, power distribution cabinet can not only provide the fire alarm of electric arc, also can provide the pre-alarm of flammable explosive gas, the range of application of expansion instrument.
2, after the control unit of the pre-alarming device of power distribution cabinet starts, can freeze the operation of all affiliated electric equipments of this power distribution cabinet, can prevent because in the situation of ignorant or misoperation, causing the consequence of disaster.
Description of drawings
Fig. 1 is power distribution cabinet Facad structure schematic diagram of the present invention;
Fig. 2 is that power distribution cabinet of the present invention removes left view behind the side;
Fig. 3 is pre-alarming device frame diagram of the present invention.
1. cabinet 2. cabinet doors 3. relay bungalows 4. breaker chambers 5. bus-bar rooms 6. A. of cable vault ultrasonic sensor B. UV sensor C. optical sensor D. Smoke Sensor E. temperature sensor F. gas analysis detectors
Embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein identical or similar label represents identical or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
As shown in Figure 1 to Figure 3, with the low-voltage distribution cabinet of pre-alarming device, include cabinet 1, with the cabinet door 2 that cabinet is connected, described cabinet 1 includes breaker chamber 4, bus-bar room 5, and cable vault 6, relay bungalow 3 separates with steel plate between described each chamber; Described relay bungalow 3 also is provided with pre-alarming device;
Described breaker chamber 4 is in cabinet 1 front bottom, circuit breaker is connected with operating mechanism by pull bar, the upper connecting terminal of described circuit breaker is connected with upper isolating switch, and the lower connecting terminal of circuit breaker is connected with current transformer, and described breaker chamber 4 also is provided with pressure relief channels;
Described bus-bar room 5 is in cabinet 1 upper back, and bus is product shape to be arranged, and bus is connected with upper isolating switch binding post;
Described cable vault 6 is at the rear of cabinet 1 bottom; Described relay bungalow 3 has the terminal board support in the place ahead, cabinet top in the described relay bungalow;
Described pre-alarming device mainly is comprised of detecting signal unit, CPU, display unit, pre-alarm unit, control unit, power subsystem and communication unit;
Be provided with main switch and each electric equipment in the described breaker chamber and be provided with independent control switch; Described above-mentioned switch is electromagnetic switch and connects with the control unit of the indoor pre-alarming device of relay;
Be provided with the control device of each electric equipment in the described breaker chamber, this device is with the control unit connection of the indoor pre-alarming device of relay and by this control unit control.
Pre-alarming device adopts 220 volts of ac power supplies, also can adjust power supply as required, and this technology belongs to the prior art scheme, and the adjustment of power supply can not have influence on technical scheme of the present invention.This device is converted to DC power supply by power subsystem with AC power, the required DC power supply that is in each unit in this device, the voltage of each unit can be identical can be not identical yet, but the needed direct voltage in each unit is generally 5 volts or 7 volts of direct current supplys to be lower than 36 volts as main.
This device can be positioned in arbitrary low-voltage alternating-current power distribution cabinet, and this device preferably is placed on the gas analysis detector in this device outside the power distribution cabinet when being positioned over the power distribution cabinet of strict explosion-proof needs.
The operation principle of this device is: ultrasonic sensor A and UV sensor B detect the electric arc that produces in the power distribution cabinet, the signal that detects is the analyzing and processing circuit take single-chip microcomputer as core through CPU, finishing the signal data that detecting signal unit is collected processes, analyze and judgement, when the intensity of these two signals acquires a certain degree, and the result is transported to control unit and pre-alarm unit, control unit can directly be controlled the upper level switch that is arranged at the electric arc position in the power distribution cabinet and disconnect, and with alarm the maintenance personal is in time keeped in repair to the electric arc parts; Optical sensor C, Smoke Sensor D and temperature sensor E are used for the fire that has occured is detected, and with the transfer of data that detects to central processing unit, central processing unit is processed, is analyzed and judge the data that collect, and the result is transported to control unit and alarm unit, control circuit can disconnect the master switch of power distribution cabinet; Gas analysis detector F detects the kind of flammable explosive gas, the content value of gas, the transfer of data that detects is to central processing unit, central processing unit is processed, is analyzed and judge the data that collect, and the result is transported to control unit and pre-alarm unit, control unit can freeze the operation of the electric equipment under the power distribution cabinet, that is to say that in the case electric equipment can only keep standing state, prevent from operating process, can producing spark and set off an explosion or fire.
Number range to the gas analysis detector in this device is the physical explosion limiting value of described gas; The numerical value of other side can be by arranging or the acquiescence dual mode.
The low-voltage distribution cabinet pre-alarming device mainly is comprised of detecting signal unit, CPU, display unit, pre-alarm unit, control unit, power subsystem and communication unit;
Wherein detecting signal unit is comprised of ultrasonic sensor A, UV sensor B, optical sensor C, Smoke Sensor D, temperature sensor E and gas analysis detector F; Ultrasonic sensor A and UV sensor B are used for electric arc is detected, and realize the early warning of electrical fire; Optical sensor C, Smoke Sensor D and temperature sensor E are used for the fire that has occured is detected and realizes the warning of electrical fire; Gas analysis detector F detects the kind of flammable explosive gas, the content value of gas, realizes to the pre-alarm of fire with to the control of electric equipment;
Wherein, CPU is finished the signal data that detecting signal unit is collected to process, analyze and judge, and the result is transported to control unit and pre-alarm unit for the analyzing and processing circuit take single-chip microcomputer as core;
Wherein, control unit comprises three groups of ACTIVE CONTROL circuit, and first group is the ACTIVE CONTROL circuit of the deal with data in the reception CPU to electric equipment, when this control circuit starts, freezes the Local or Remote operation of all electric equipments of power distribution cabinet; Second group is local control circuit, and the ACTIVE CONTROL circuit that is comprised of button is used for to the adjustment of CPU or to the artificial adjustment of first group of ACTIVE CONTROL circuit; Button is comprised of setting key, reset key, ventil, upturning key and downturning key; The 3rd group is remote control unit, is used for the signal pair Central Processing Unit of receiving communication unit or the adjustment of first group of control unit;
Wherein, display unit comprises display and indicator light; Display is used for showing measured value and the alarming value of CPU, and local control unit or remote control unit are to the adjustment parameter value of CPU; Indicator light is used for the pre-alarming device working station indicator;
Power subsystem is for to change alternating current into dc supply, and provides DC power supply to detecting signal unit, CPU, display circuit unit, prealarm circuit unit, control circuit unit and communication unit.
The pre-alarm unit comprises sound and luminous dual mode, and this dual mode all has local and remote dual mode, and this dual mode carries out simultaneously, and its medium-long range pre-alarm mode is for to transmit by communication unit; Described sound and luminous alarm mode are selected now general mode.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment that scope of the present invention is by claims and be equal to and limit.
Claims (7)
1. with the low-voltage distribution cabinet of pre-alarming device, include cabinet, the cabinet door with cabinet is connected is characterized in that: described cabinet includes breaker chamber, bus-bar room, and the cable vault, relay bungalow separates with steel plate between described each chamber; Described relay bungalow also is provided with pre-alarming device;
Described breaker chamber is in the front bottom of cabinet, and circuit breaker is connected with operating mechanism by pull bar, and the upper connecting terminal of described circuit breaker is connected with upper isolating switch, and the lower connecting terminal of circuit breaker is connected with current transformer, and described breaker chamber also is provided with pressure relief channels;
Described bus-bar room is in the cabinet upper back, and bus is product shape to be arranged, and bus is connected with upper isolating switch binding post;
Described cable vault is at the rear of cabinet bottom; Described relay bungalow has the terminal board support in the place ahead, cabinet top in the described relay bungalow;
Described pre-alarming device mainly is comprised of detecting signal unit, CPU, display unit, pre-alarm unit, control unit, power subsystem and communication unit;
Be provided with main switch and each electric equipment in the described breaker chamber and be provided with independent control switch; Described above-mentioned switch is electromagnetic switch and connects with the control unit of the indoor pre-alarming device of relay;
Also be provided with the control device of each electric equipment in the described breaker chamber, this device is with the control unit connection of the indoor pre-alarming device of relay and by this control unit control.
2. the low-voltage distribution cabinet with pre-alarming device according to claim 1, it is characterized in that: wherein, detecting signal unit is comprised of ultrasonic sensor, UV sensor, optical sensor, Smoke Sensor, temperature sensor and gas analysis detector; Ultrasonic sensor and UV sensor are used for electric arc is detected, and realize the early warning of electrical fire; Optical sensor, Smoke Sensor and temperature sensor are used for the fire that has occured is detected and realizes the warning of electrical fire; The gas analysis detector detects the kind of flammable explosive gas, the content value of gas, realizes the pre-alarm to fire.
3. the low-voltage distribution cabinet with pre-alarming device according to claim 1, it is characterized in that: wherein, CPU is the analyzing and processing circuit take single-chip microcomputer as core, finish the signal data that detecting signal unit is collected and process, analyze and judge, and the result is transported to control unit and pre-alarm unit.
4. the low-voltage distribution cabinet with pre-alarming device according to claim 1, it is characterized in that: wherein, control unit comprises three groups of ACTIVE CONTROL circuit, and first group of ACTIVE CONTROL circuit is the ACTIVE CONTROL circuit of the deal with data in the reception CPU to power distribution cabinet or electric equipment; Second group of ACTIVE CONTROL circuit is local control circuit, and the ACTIVE CONTROL circuit that is comprised of button is used for to the adjustment of CPU or to the artificial adjustment of first group of ACTIVE CONTROL circuit; The 3rd group of ACTIVE CONTROL circuit is remote control unit, is used for the signal pair Central Processing Unit of receiving communication unit or the adjustment of first group of control unit.
5. the low-voltage distribution cabinet with pre-alarming device according to claim 1, it is characterized in that: wherein, display unit comprises display and indicator light; Display is used for showing measured value and the alarming value of CPU, and local control unit or remote control unit are to the adjustment parameter value of CPU; Indicator light is used for the pre-alarming device working station indicator.
6. the low-voltage distribution cabinet with pre-alarming device according to claim 1, it is characterized in that: power subsystem is for to change alternating current into dc supply, and provides DC power supply to detecting signal unit, CPU, display unit, pre-alarm unit, control unit and communication unit.
7. the low-voltage distribution cabinet with pre-alarming device according to claim 4, it is characterized in that: during first group of ACTIVE CONTROL circuit start, when this log-on data was the data that detected by central processing unit for processing gas analysis detector, the Local or Remote that this control circuit freezes each electric equipment control device interruption chambe in operated; When this log-on data was the data that gathered by central processing unit for processing ultrasonic sensor and UV sensor, this control circuit disconnected the upper level switch that is arranged at the electric arc position in the power distribution cabinet; When this log-on data was the data that gathered by central processing unit for processing optical sensor, Smoke Sensor and temperature sensor, this control circuit disconnected and is arranged at master switch in the power distribution cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210335069.0A CN102868104B (en) | 2012-09-11 | 2012-09-11 | Low-voltage distribution cabinet with pre-alarming device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210335069.0A CN102868104B (en) | 2012-09-11 | 2012-09-11 | Low-voltage distribution cabinet with pre-alarming device |
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| CN102868104A true CN102868104A (en) | 2013-01-09 |
| CN102868104B CN102868104B (en) | 2016-07-13 |
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| CN201210335069.0A Expired - Fee Related CN102868104B (en) | 2012-09-11 | 2012-09-11 | Low-voltage distribution cabinet with pre-alarming device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345656A (en) * | 2013-07-30 | 2015-02-11 | 上海基胜能源科技有限公司 | Remote monitoring terminal |
| CN104638540A (en) * | 2013-11-14 | 2015-05-20 | 成都振中电气有限公司 | Low-tension distribution box with alarm mechanism |
| CN104766433A (en) * | 2015-04-23 | 2015-07-08 | 河南理工大学 | Electrical fire warning system based on data fusion |
| CN105386991A (en) * | 2015-11-07 | 2016-03-09 | 国网山东平度市供电公司 | Induction and early warning draught fan control box for power fires |
| CN106992443A (en) * | 2017-05-16 | 2017-07-28 | 中科天工电气控股有限公司 | A kind of power distribution cabinet of automatic suppression combustion |
| CN109524896A (en) * | 2018-10-16 | 2019-03-26 | 中车大连电力牵引研发中心有限公司 | High-voltage electrical box and train |
| CN115171326A (en) * | 2022-06-30 | 2022-10-11 | 云南电网有限责任公司文山供电局 | Power distribution cabinet fire and cable overheating linkage protection method and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08249560A (en) * | 1995-03-14 | 1996-09-27 | Nohmi Bosai Ltd | Disconnection monitoring device and repeater in fire alarm facilities |
| CN2867666Y (en) * | 2005-08-26 | 2007-02-07 | 杭州电器开关有限公司 | Box fixed metal enclosed switch cubicle |
| CN201051614Y (en) * | 2007-05-19 | 2008-04-23 | 中山酷特电气有限公司 | Multifunctional intelligent anti-theft alarm power distribution system |
| CN201199609Y (en) * | 2008-01-21 | 2009-02-25 | 佛山市华南开关有限公司 | Novel AC metal closed switch installation |
| CN201562335U (en) * | 2009-07-04 | 2010-08-25 | 顾海勇 | Temperature measurement type electric fire monitoring system |
| CN102385785A (en) * | 2011-11-07 | 2012-03-21 | 河南理工大学 | Electrical fire accident pre-warning and alarming device for low-voltage switch and low-voltage distribution box |
-
2012
- 2012-09-11 CN CN201210335069.0A patent/CN102868104B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08249560A (en) * | 1995-03-14 | 1996-09-27 | Nohmi Bosai Ltd | Disconnection monitoring device and repeater in fire alarm facilities |
| CN2867666Y (en) * | 2005-08-26 | 2007-02-07 | 杭州电器开关有限公司 | Box fixed metal enclosed switch cubicle |
| CN201051614Y (en) * | 2007-05-19 | 2008-04-23 | 中山酷特电气有限公司 | Multifunctional intelligent anti-theft alarm power distribution system |
| CN201199609Y (en) * | 2008-01-21 | 2009-02-25 | 佛山市华南开关有限公司 | Novel AC metal closed switch installation |
| CN201562335U (en) * | 2009-07-04 | 2010-08-25 | 顾海勇 | Temperature measurement type electric fire monitoring system |
| CN102385785A (en) * | 2011-11-07 | 2012-03-21 | 河南理工大学 | Electrical fire accident pre-warning and alarming device for low-voltage switch and low-voltage distribution box |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345656A (en) * | 2013-07-30 | 2015-02-11 | 上海基胜能源科技有限公司 | Remote monitoring terminal |
| CN104638540A (en) * | 2013-11-14 | 2015-05-20 | 成都振中电气有限公司 | Low-tension distribution box with alarm mechanism |
| CN104766433A (en) * | 2015-04-23 | 2015-07-08 | 河南理工大学 | Electrical fire warning system based on data fusion |
| CN105386991A (en) * | 2015-11-07 | 2016-03-09 | 国网山东平度市供电公司 | Induction and early warning draught fan control box for power fires |
| CN106992443A (en) * | 2017-05-16 | 2017-07-28 | 中科天工电气控股有限公司 | A kind of power distribution cabinet of automatic suppression combustion |
| CN109524896A (en) * | 2018-10-16 | 2019-03-26 | 中车大连电力牵引研发中心有限公司 | High-voltage electrical box and train |
| CN115171326A (en) * | 2022-06-30 | 2022-10-11 | 云南电网有限责任公司文山供电局 | Power distribution cabinet fire and cable overheating linkage protection method and device |
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| CN102868104B (en) | 2016-07-13 |
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Address after: 315135 Zhejiang city of Ningbo province Yinzhou District Yunlong Town Road No. 229 cloud Applicant after: NINGBO DEWO INTELLIGENT CO., LTD. Address before: 315135, Ningbo, Zhejiang province Yinzhou District Yunlong Town Mei Chi Industrial Zone Applicant before: Ningbo Dwoo Electric Power Technology Co., Ltd. |
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Granted publication date: 20160713 Termination date: 20200911 |