CN102868104B - Low-voltage distribution cabinet with pre-alarming device - Google Patents
Low-voltage distribution cabinet with pre-alarming device Download PDFInfo
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- CN102868104B CN102868104B CN201210335069.0A CN201210335069A CN102868104B CN 102868104 B CN102868104 B CN 102868104B CN 201210335069 A CN201210335069 A CN 201210335069A CN 102868104 B CN102868104 B CN 102868104B
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- 238000010891 electric arc Methods 0.000 claims abstract description 13
- 239000002360 explosive Substances 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 23
- 238000004868 gas analysis Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 15
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The present invention relates to the low-voltage distribution cabinet with pre-alarming device, include cabinet, with the cabinet door that cabinet is connected, described cabinet includes breaker chamber, bus-bar room, cable vault, relay bungalow, separates with steel plate between described each room；Described relay bungalow is additionally provided with pre-alarming device；This low-voltage distribution cabinet can not only provide the fire alarm of electric arc, it is also possible to provides the pre-alarm of flammable explosive gas, the range of application of expansion instrument.After the control unit of pre-alarming device starts, it is possible to freeze the operation of all electrical equipments belonging to this power distribution cabinet, it is possible to prevent the consequence because causing disaster when ignorant or maloperation.
Description
Technical field
The invention belongs to electric power electrical apparatus field, particularly relate to can to being likely to the electrical fire that caused by electric arc or the low-voltage distribution cabinet to the pre-alarming device having explosion gas in environment.
Background technology
At present, low-voltage distribution cabinet is provided with certain defencive function, but is substantially the defencive function of antioverloading, against short-circuit, electric leakage etc., it does not have to electrical fire and to the pre-alarm function having flammable explosive gas in environment.
By analyzing the electrical fire that had occurred and that it can be seen that fires is in electric little, it is substantially all and originates from power distribution cabinet.This is primarily due to; first the fire of the overwhelming majority is cause the phenomenons such as overload, short circuit or electric leakage occur with electric a variety of causes; first this phenomenon is reacted on power distribution cabinet, if being quick on the draw of power distribution cabinet, respectively protects circuit timely open circuit to cut off the electricity supply and each hidden danger eliminated.But when the reaction of the protection circuit in power distribution cabinet is insensitive, the device in power distribution cabinet can not be cut off the electricity supply in time, will arise that the phenomenon such as electric arc or high temperature at each element in power distribution cabinet, can cause the generation of fire when exceeding certain limit.When breaking out of fire in power distribution cabinet, cannot be cut off the electricity supply by this power distribution cabinet, cut off the electricity supply only by upper level, but the delay of this time can cause serious consequence.
Being that the flammable explosive gas in environment cannot be realized pre-alarm by power distribution cabinet on the other hand, this is primarily due in the enterprise having flammable explosive gas or environment, and what first select is have explosion-proof type power distribution cabinet, such as chemical enterprise or mine etc..And in other cases, because flammable explosive gas there is a possibility that little, and the cost of explosion-proof type power distribution cabinet is high, general selection is plain edition power distribution cabinet.But in existing domestic consumer, such as residential building, the use of combustion gas generally, when there is leakage, happens occasionally because opening accident that is electric and that blast.
For the problems referred to above, prior art proposes the on-line monitoring alarm device of electric disaster hidden-trouble, but this monitoring alarm device is only capable of reporting to the police when fire occurs or after occurring, and disaster hidden-trouble cannot be carried out pre-alarm.
Not mentioning the technology and the document that have flammable explosive gas to realize pre-alarm in prior art, existing is only be provided with smoke alarm unit in facility, is only capable of smog is reported to the police under reaching certain density situation.
Summary of the invention
It is an object of the invention to provide a technical scheme, this technical scheme can not only realize the electric arc in low-voltage distribution cabinet is carried out pre-alarm, moreover it is possible to the flammable explosive gas in environment is realized pre-alarm.
The present invention is achieved by the following technical solutions:
With the low-voltage distribution cabinet of pre-alarming device, including cabinet, with the cabinet door that cabinet is connected, described cabinet includes breaker chamber, bus-bar room, cable vault, relay bungalow, separates with steel plate between described each room；Described relay bungalow is additionally provided with pre-alarming device；
Described breaker chamber is in cabinet front lower portion, and chopper is connected with operating mechanism by pull bar, the upper connecting terminal of described chopper with on keep apart pass be connected, the lower connecting terminal of chopper is connected with current transformer, and described breaker chamber is additionally provided with pressure relief channels；
Described bus-bar room is in cabinet upper back, and bus is the arrangement of product shape, and bus is connected with upper isolation switch terminal；
Described cable vault is at the rear of cabinet bottom；Described relay bungalow, in front, cabinet top, has terminal block support in described relay bungalow；
Described pre-alarming device is mainly made up of detecting signal unit, CPU, display unit, pre-alarm unit, control unit, power subsystem and communication unit；
It is provided with master switch in described breaker chamber and each electrical equipment is provided with and individually controls switch；Described above-mentioned switch is electromagnetic switch and the control unit with the pre-alarming device of relay indoor connects；
Being provided with the control device of each electrical equipment in described breaker chamber, this device connects with the control unit of the pre-alarming device of relay indoor and is controlled by this control unit.
Wherein, detecting signal unit is made up of ultrasonic sensor, UV sensor, optical sensor, Smoke Sensor, temperature sensor and gas analysis detector；Ultrasonic sensor and UV sensor are for detecting electric arc, it is achieved the early warning of electrical fire and control；Optical sensor, Smoke Sensor and temperature sensor for detecting and realize warning and the control of electrical fire to the fire having occurred and that；The content value of the kind of flammable explosive gas, gas is detected by gas analysis detector, it is achieved the pre-alarm to fire and the control to electrical equipment.
Wherein, the analyzing and processing circuit that CPU is is core with single-chip microcomputer, the signal data completing that detecting signal unit is collected processes, analyzes and judges, and result is transported to control unit and pre-alarm unit.
Wherein, control unit includes three groups of actively control circuits, and first group of active control circuit is the active control circuits to power distribution cabinet or electrical equipment of the process data in receiving CPU；Second group of active control circuit is local control circuit, the active control circuit being made up of button, for adjusting of CPU or manually adjusting first group of active control circuit；3rd group actively control circuit be remote control unit, for the adjustment of the signal pair Central Processing Unit of receiving communication unit or first group of control unit.
Wherein, display unit includes display and display lamp；Display is used for showing measured value and the alarming value of CPU, local control unit or the remote control unit adjustment parameter value to CPU；Display lamp is used for pre-alarming device working station indicator；
Power subsystem for being changed into DC supply by alternating current, and provides DC source to detecting signal unit, CPU, display circuit unit, prealarm circuit unit, control circuit unit and communication unit.
When first group of active control circuit starts, when the data that these startup data are by the detection of central processing unit for processing gas analysis detector, this control circuit is freezed each electrical equipment in interruption chambe and is controlled the Local or Remote operation of device；When these startup data are the data gathered by central processing unit for processing ultrasonic sensor and UV sensor, this control circuit disconnects the upper level switch at the electric arc position being arranged in power distribution cabinet；When these startup data are the data gathered by central processing unit for processing optical sensor, Smoke Sensor and temperature sensor, this control circuit disconnects and is arranged in power distribution cabinet main switch.
The present invention compared with the existing technology provides the benefit that:
1, power distribution cabinet can not only provide the fire alarm of electric arc, it is also possible to provides 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, it is possible to freeze the operation of all electrical equipments belonging to this power distribution cabinet, it is possible to prevent the consequence because causing disaster when ignorant or maloperation.
Accompanying drawing explanation
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 side；
Fig. 3 is pre-alarming device frame diagram of the present invention.
1. cabinet 2. cabinet door 3. relay bungalow 4. breaker chamber 5. bus-bar room 6. cable vault A. ultrasonic sensor B. UV sensor C. optical sensor D. Smoke Sensor E. temperature sensor F. gas analysis detector
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, and is only used for explaining the present invention, and is not construed as limiting the claims.
As shown in Figure 1 to Figure 3, with the low-voltage distribution cabinet of pre-alarming device, including cabinet 1, with the cabinet door 2 that cabinet is connected, described cabinet 1 includes breaker chamber 4, bus-bar room 5, cable vault 6, relay bungalow 3, separates with steel plate between described each room；Described relay bungalow 3 is additionally provided with pre-alarming device；
Described breaker chamber 4 is in cabinet 1 front lower portion, and chopper is connected with operating mechanism by pull bar, the upper connecting terminal of described chopper with on keep apart pass be connected, the lower connecting terminal of chopper is connected with current transformer, and described breaker chamber 4 is additionally provided with pressure relief channels；
Described bus-bar room 5 is in cabinet 1 upper back, and bus is the arrangement of product shape, and bus is connected with upper isolation switch terminal；
Described cable vault 6 is at the rear of cabinet 1 bottom；Described relay bungalow 3, in front, cabinet top, has terminal block support in described relay bungalow；
Described pre-alarming device is mainly made up of detecting signal unit, CPU, display unit, pre-alarm unit, control unit, power subsystem and communication unit；
It is provided with master switch in described breaker chamber and each electrical equipment is provided with and individually controls switch；Described above-mentioned switch is electromagnetic switch and the control unit with the pre-alarming device of relay indoor connects；
Being provided with the control device of each electrical equipment in described breaker chamber, this device connects with the control unit of the pre-alarming device of relay indoor and is controlled by this control unit.
Pre-alarming device adopts 220 volts of alternating current power supplys to power, it is also possible to as required power supply being adjusted, this technology belongs to prior art, and the adjustment of power supply does not interfere with technical scheme.Alternating current power supply is converted to DC source by power subsystem by this device, it is DC source needed for each unit in this device, the voltage of each unit can identical can also differ, but the DC voltage required for each unit is lower than 36 volts, to be generally 5 volts or 7 volts of direct current supplys.
This device can be positioned in arbitrary low-voltage alternating-current power distribution cabinet, and this device is when being positioned over the power distribution cabinet of strict explosion-proof needs, it will be preferred that is placed on outside power distribution cabinet by the gas analysis detector in this device.
The operation principle of this device is: the electric arc produced in power distribution cabinet is detected by ultrasonic sensor A and UV sensor B, the analyzing and processing circuit that the signal detected through CPU is is core with single-chip microcomputer, the signal data completing detecting signal unit is collected processes, analyze and judge, when the intensity of the two signal reaches to a certain degree, and result is transported to control unit and pre-alarm unit, the upper level at the electric arc position that control unit can directly control to be arranged in power distribution cabinet switches off, maintainer is made in time electric arc parts to be keeped in repair with alarm；Optical sensor C, Smoke Sensor D and temperature sensor E are for detecting the fire having occurred and that, and the data detected are transferred to central processing unit, the data collected are processed, analyze and judge by central processing unit, and result is transported to control unit and alarm unit, control circuit can disconnect the main switch of power distribution cabinet；The content value of the kind of flammable explosive gas, gas is detected by gas analysis detector F, the data detected are transferred to central processing unit, the data collected are processed, analyze and judge by central processing unit, and result is transported to control unit and pre-alarm unit, control unit can freeze the operation of the electrical equipment belonging to power distribution cabinet, that is in the case, electrical equipment can only keep standing state, it is prevented that can produce spark in operation and set off an explosion or fire.
To the physical explosion ultimate value that the numerical range of gas analysis detector is described gas in this device；The numerical value of other side can pass through arrange or give tacit consent to two ways.
Low-voltage distribution cabinet pre-alarming device, is mainly made up of detecting signal unit, CPU, display unit, pre-alarm unit, control unit, power subsystem and communication unit；
Wherein detecting signal unit is made up 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 is for detecting electric arc, it is achieved the early warning of electrical fire；Optical sensor C, Smoke Sensor D and temperature sensor E for detecting and realize the warning of electrical fire to the fire having occurred and that；The content value of the kind of flammable explosive gas, gas is detected by gas analysis detector F, it is achieved the pre-alarm to fire and the control to electrical equipment；
Wherein, the analyzing and processing circuit that CPU is is core with single-chip microcomputer, the signal data completing that detecting signal unit is collected processes, analyzes and judges, and result is transported to control unit and pre-alarm unit；
Wherein, control unit includes three groups of actively control circuits, and first group is processs data in the receiving CPU active control circuits to electrical equipment, and when this control circuit starts, the Local or Remote freezing all of electrical equipment of power distribution cabinet operates；Second group is local control circuit, the active control circuit being made up of button, for adjusting of CPU or manually adjusting first group of active control circuit；Button is made up of setting key, reset key, ventil, upturning key and downturning key；3rd group is remote control unit, for the adjustment of the signal pair Central Processing Unit of receiving communication unit or first group of control unit；
Wherein, display unit includes display and display lamp；Display is used for showing measured value and the alarming value of CPU, local control unit or the remote control unit adjustment parameter value to CPU；Display lamp is used for pre-alarming device working station indicator；
Power subsystem for being changed into DC supply by alternating current, and provides DC source to detecting signal unit, CPU, display circuit unit, prealarm circuit unit, control circuit unit and communication unit.
Pre-alarm unit includes sound and luminous two ways, and both modes all have local and remote two ways, and both modes carry out simultaneously, and its medium-long range pre-alarm mode is for be transmitted by communication unit；Described sound and luminous alarm mode select now general mode.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, being appreciated that and these embodiments can be carried out multiple change, amendment, replacement and modification without departing from the principles and spirit of the present invention, the scope of the invention and equivalency.
Claims (5)
1. the 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, cable vault, relay bungalow, separates with steel plate between described each room；Described relay bungalow is additionally provided with pre-alarming device；
Described breaker chamber is in cabinet front lower portion, and chopper is connected with operating mechanism by pull bar, the upper connecting terminal of described chopper with on keep apart pass be connected, the lower connecting terminal of chopper is connected with current transformer, and described breaker chamber is additionally provided with pressure relief channels；
Described bus-bar room is in cabinet upper back, and bus is the arrangement of product shape, and bus is connected with upper isolation switch terminal；
Described cable vault is at the rear of cabinet bottom；Described relay bungalow, in front, cabinet top, has terminal block support in described relay bungalow；It is characterized in that:
Described pre-alarming device is mainly made up of detecting signal unit, CPU, display unit, pre-alarm unit, control unit, power subsystem and communication unit；
It is provided with master switch in described breaker chamber and each electrical equipment is provided with and individually controls switch；Described above-mentioned switch is electromagnetic switch and the control unit with the pre-alarming device in relay bungalow connects；
Being additionally provided with the control device of each electrical equipment in described breaker chamber, this device connects with the control unit of the pre-alarming device in relay bungalow and is controlled by this control unit；
Wherein, control unit includes three groups of actively control circuits, and first group of active control circuit is the active control circuits to power distribution cabinet or electrical equipment of the process data in receiving CPU；Second group of active control circuit is local control circuit, the active control circuit being made up of button, for adjusting of CPU or manually adjusting first group of active control circuit；3rd group actively control circuit be remote control unit, for the adjustment of the signal pair Central Processing Unit of receiving communication unit or first group of control unit；
When first group of active control circuit starts, when the data that these startup data are by the detection of central processing unit for processing gas analysis detector, this control circuit is freezed each electrical equipment in interruption chambe and is controlled the Local or Remote operation of device；When these startup data are the data gathered by central processing unit for processing ultrasonic sensor and UV sensor, this control circuit disconnects the upper level switch at the electric arc position being arranged in power distribution cabinet；When these startup data are the data gathered by central processing unit for processing optical sensor, Smoke Sensor and temperature sensor, this control circuit disconnects and is arranged in power distribution cabinet main switch.
2. the low-voltage distribution cabinet with pre-alarming device according to claim 1, it is characterised in that: wherein, detecting signal unit is made up of ultrasonic sensor, UV sensor, optical sensor, Smoke Sensor, temperature sensor and gas analysis detector；Ultrasonic sensor and UV sensor are for detecting electric arc, it is achieved the early warning of electrical fire；Optical sensor, Smoke Sensor and temperature sensor for detecting and realize the warning of electrical fire to the fire having occurred and that；The content value of the kind of flammable explosive gas, gas is detected by gas analysis detector, it is achieved 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, the analyzing and processing circuit that CPU is is core with single-chip microcomputer, the signal data completing that detecting signal unit is collected processes, analyzes and judges, and 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 characterised in that: wherein, display unit includes display and display lamp；Display is used for showing measured value and the alarming value of CPU, local control unit or the remote control unit adjustment parameter value to CPU；Display lamp is used for pre-alarming device working station indicator.
5. the low-voltage distribution cabinet with pre-alarming device according to claim 1, it is characterized in that: power subsystem for being changed into DC supply by alternating current, and provides DC source to detecting signal unit, CPU, display unit, pre-alarm unit, control unit and communication unit.
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 |
|---|---|---|---|
| CN201210335069.0A CN102868104B (en) | 2012-09-11 | 2012-09-11 | Low-voltage distribution cabinet with pre-alarming device |
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| Publication Number | Publication Date |
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| CN102868104A CN102868104A (en) | 2013-01-09 |
| CN102868104B true 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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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN109524896B (en) * | 2018-10-16 | 2020-02-21 | 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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| CN2867666Y (en) * | 2005-08-26 | 2007-02-07 | 杭州电器开关有限公司 | Box fixed metal enclosed switch cubicle |
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| CN201562335U (en) * | 2009-07-04 | 2010-08-25 | 顾海勇 | Temperature measurement type electric fire monitoring system |
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| JP3398514B2 (en) * | 1995-03-14 | 2003-04-21 | 能美防災株式会社 | Disconnection monitoring device and repeater in fire alarm system |
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|---|---|---|---|---|
| CN2867666Y (en) * | 2005-08-26 | 2007-02-07 | 杭州电器开关有限公司 | Box fixed metal enclosed switch cubicle |
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| 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 |
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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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