CN201966578U - Arc extinguishing type electrical fireproof short circuit protection device - Google Patents
Arc extinguishing type electrical fireproof short circuit protection device Download PDFInfo
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- CN201966578U CN201966578U CN2011200729719U CN201120072971U CN201966578U CN 201966578 U CN201966578 U CN 201966578U CN 2011200729719 U CN2011200729719 U CN 2011200729719U CN 201120072971 U CN201120072971 U CN 201120072971U CN 201966578 U CN201966578 U CN 201966578U
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Abstract
The utility model provides an arc extinguishing type electrical fireproof short circuit protection device. The device comprises a main power module, a current sampling module, a cut-off switch module, a control module, and an alarm-displaying and parameter-setting module, wherein the cut-off switch module is connected with the current sampling module and in serial connection with a load circuit; the control module is connected with the current sampling module and the cut-off switch module; and the alarm-displaying and parameter-setting module is connected with the control module. The cut-off switch module comprises an SCR (Silicon Controlled Rectifier) module, an IGBT (Insulated Gate Bipolar Translator) module and an auxiliary power module, wherein the SCR module is connected with the current sampling module and the control module; the IGBT module is connected with the SCR module and the control module; and the auxiliary power module is connected with the IGBI module and the control module, so as to supply reverse current signals. In the arc extinguishing type electrical fireproof short circuit protection device provided by the utility model, a scheme combining an SCR and an IGBT is adopted to rapidly cut off the power supply, the time for cutting off the power supply is reduced from millisecond to microsecond, only tiny electric arc sparkles occur or even no sparkles occur at the short circuit end, so that the electricity utilization security is guaranteed.
Description
Technical field
The utility model relates to overload short-circuit protection, the electric fireproof field of household electricity, civilian, commercial power, electric (device) product, relates in particular to a kind of arc extinguishing formula electric fireproof short-circuit protection.
Background technology
In existing electric supply system; when load current excessive; particularly under the situation of load output short-circuit; this moment the electric current fast rise in the current supply circuit; be easy to cause the Electrical Safety accident; so power consumption equipment all increases the short-circuit protection of detection of excessive current phenomenon in current supply circuit, the electricity consumption loop is protected.
Circuit breaker is the existing a kind of overcurrent short-circuit protection that generally adopts, and when overcurrent or short circuit took place level after the electricity consumption, it can cut off the back level power supply automatically.Air switch is modal a kind of overcurrent short-circuiting means, also claims circuit breaker, and it is a kind of existing hand switch effect, can transship the electric device of short-circuit protection again automatically.In case it can be cut off the electricity supply automatically during faults such as overload that the generation of circuit breaker current supply circuit is serious or short circuit, its function is equivalent to the combination of Fuse switch and overtemperature relay etc.And behind the disjunction fault current, generally do not need to change parts, obtained to use very widely.
But, because the inherent characteristic of conventional circuit breaker internal mechanical switch: the time of its electric power system of cutting off the electricity supply long (a few tens of milliseconds between hundreds of milliseconds), because of short circuit place contact resistance little, thereby cause the electric current of current supply circuit sharply to increase, the temperature of current supply circuit conductor sharply rises, short dot produces very strong dangerous arc spark, the high temperature of its generation and arc electrode fire hazardous or electric shock accidents, to the people's lives and property and safety constitute a serious threat, in some special occasions (as the gas station, the liquefied gas supply station, fireworks and firecrackers manufacturing place etc.) may also can cause more abominable consequence.
Summary of the invention
The utility model proposes a kind of arc extinguishing formula electric fireproof short-circuit protection; with solve exist in the prior art because of load short circuits the time power cut off time long various security incidents that cause; make the time of dump be reduced to the microsecond level by present Millisecond; finally only form small arc spark even can't see spark, thereby reduce the potential safety hazard that causes because of load short circuits to greatest extent at short-circuit end.
To achieve these goals, the utility model provides a kind of arc extinguishing formula electric fireproof short-circuit protection, comprising:
1. main power source module provides power supply for installing all the other modules;
2. current sample module; Be used for real-time monitoring load electric current;
3. cut-out switch module, described cut-out switch module links to each other with described current sample module, and is series in the load circuit;
4. control module, described control module links to each other with described current sample module, described cut-out switch module;
5. display alarm and parameter setting module, described display alarm links to each other with described control module with parameter setting module;
Described cut-out switch module also comprises:
1. silicon controlled module, described silicon controlled module links to each other with described current sample module, described control module;
2.IGBT module, described IGBT module links to each other with described silicon controlled module, described control module;
3. be used to provide the accessory power supply module of reverse current signal, described accessory power supply module links to each other with described IGBT module, described silicon controlled module.
Optionally, described silicon controlled module is a bidirectional triode thyristor or is the one-way SCR of two reverse parallel connections.
Optionally, described current sample module is a Hall current sensor.
Optionally, described control module is a MCU (Micro Control Unit), and Chinese is a micro-control unit, claims one chip microcomputer (Single Chip Microcomputer) again.
Optionally, described arc extinguishing formula electric fireproof short-circuit protection also comprises resistance and an electric capacity, and described resistance links to each other with described silicon controlled module with described electric capacity.
The concrete course of work of the present utility model is as follows: main power source module provides working power to each module (current sample module, control module, cut-out switch module, display alarm and parameter setting module); The current sample module is constantly gathered the current data in the load, and the current data that collects is sent to control module; Control module judges whether described current data is normal, if normal, circulatory monitoring current data, control module are not sent any signal; If undesired, then send signal and give silicon controlled module and the IGBT module of cutting off switch module by control module; In the cut-out switch module of the utility model device, be provided with an accessory power supply module that is used to provide the reverse current signal, when control module is sent signal to the IGBT module, the conducting of IGBT module, the reverse current signal of the accessory power supply module that connect with the IGBT module this moment is added on the silicon controlled module, this moment, silicon controlled module instantaneous trip load power source was controlled at the microsecond level break time with load power source.
In the utility model, if control module is directly controlled silicon controlled module and is cut off load, and do not adopt the reverse current signal of accessory power supply module to act on silicon controlled module cut-out load by the IGBT module, the time worst case that then can cause silicon controlled module to be cut off the electricity supply is issued to several milliseconds, this situation very easily causes the damage out of control of silicon controlled module, short-circuit end will certainly produce extremely strong arc spark, thereby can not in time cut off load.
In the utility model; cut off the purpose of load power source at a high speed in order to reach; abandoned the mode that the current transformer that adopts in the general short circuit current protective device is gathered current signal; and adopt the Hall current sampling module to gather current signal; gather the speed of current signal like this and accelerate greatly, the high speed that adds IGBT combination carrying out load power source with follow-up controllable silicon is cut off, and Whole Response speed greatly improves; from being short-circuited to the disconnecting consumers power supply, its time can be controlled at the microsecond level.
Owing to adopted technique scheme; compared with prior art; the utlity model has following advantage: the utility model arc extinguishing formula electric fireproof short-circuit protection is because the scheme that has adopted controllable silicon to add the IGBT combination comes high speed to cut off the electricity supply; thereby make the time of cutting off the electricity supply be reduced to the microsecond level by present Millisecond; finally only may form small arc spark even can't see spark at short-circuit end; reduce to greatest extent because of potential safety hazards such as the busbar voltage current distortion that causes with electrical short, electrical fire, electric shock accidentss, guarantee the safety of electricity consumption.
Description of drawings
Fig. 1 is the structured flowchart of the utility model arc extinguishing formula electric fireproof short-circuit protection.
Fig. 2 is the schematic diagram of the utility model arc extinguishing formula electric fireproof short-circuit protection electronic switch and load terminal voltage before the load end short circuit.
Fig. 3 is the utility model arc extinguishing formula electric fireproof short-circuit protection electronic switch and load terminal voltage state variation schematic diagram after the load end short circuit.
Fig. 4 is the example structure block diagram of the utility model arc extinguishing formula electric fireproof short-circuit protection.
Fig. 5 is the schematic flow sheet of the utility model arc extinguishing formula electric fireproof short-circuit protection.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structured flowchart of the utility model arc extinguishing formula electric fireproof short-circuit protection, and the arc extinguishing of the utility model shown in figure formula electric fireproof short-circuit protection comprises:
1) main power source module 21, and main power source module is with the required direct current of 220V alternating current (perhaps direct current) system that is transformed to, for other modules provide working power;
2) the current sample module 221, the current signal value that samples judges whether to transship as control module or the foundation of short circuit, control module is sent according to the signal that samples and is opened or close the instruction of cutting off switch, described current sample module is that Hall current sensor and related device constitute, the Hall current sampling module can guarantee the linearity good in-40 ℃ ~ 125 ℃ technical grade temperature ranges and reliable reaction speed, at present, Hall current sampling device can adopt the Hall element of producers' manufacturings such as Honeywell Inc., PANASONIC, Omron Corp.
3) cut off switch module 222, link to each other with described current sample module, and be series in load (LOAD) loop, the signal that is sent by control module when load (LOAD) is short-circuited or transships is given and is cut off switch module, cut off switch module and cut off load (LOAD) power supply at once, below the cut-out switch module, can do more detailed introduction, among Fig. 1 current sample module and cut-out switch module have been placed in the same empty frame 22;
4) control module 24, link to each other with described current sample module 221, described cut-out switch module 222, be used for calculation process, functions such as the control of short circuit, overload signal, demonstration, communication, described control module 24 is i.e. 241 among the figure of a MCU, and MCU can adopt devices such as single-chip microcomputer that how tame semiconductor manufacturer provides, ARM, DSP, FPGA;
5) display alarm and parameter setting module 23 link to each other with described control module 24, show real-time load current value, communication state, parameter setting.Each parameter (as short circuit threshold values, overload values) all can be set by guidance panel is convenient, and the parameter of settings is kept among the EEPROM of MCU inside, prevent power down after parameter lose.
Fig. 2 and Fig. 3: Fig. 2 is the utility model arc extinguishing formula electric fireproof short-circuit protection cuts off switch before short circuit state and a load terminal voltage schematic diagram, and Fig. 3 is the utility model arc extinguishing formula electric fireproof short-circuit protection cuts off switch and load terminal voltage after the load end short circuit a state variation schematic diagram.Fig. 2 is a normal condition: cut off switch module 321 closures, load end (LOAD) gets electric, shows load end (LOAD) voltage 220V among Fig. 2; Fig. 3 is the state of load end short circuit after taking place: by the current sample sensor feedback signal to control module, control module is sent signal to cutting off switch module 322, this moment, the power supply of back level short-circuit end was cut off rapidly, the voltage that shows load end (LOAD) among Fig. 3 is 0V, makes short circuit place not produce dangerous spark.
Fig. 4 is the example structure block diagram of the utility model arc extinguishing formula electric fireproof short-circuit protection, and as can be seen from Figure 4, the example structure of the utility model arc extinguishing formula electric fireproof short-circuit protection comprises main power source module 51; Current sample module 521; Cut off switch module, link to each other with described current sample module 521, and be series in load (LOAD) loop, current sample module and cut-out switch module are arranged in same empty frame 52; Control module 54 links to each other with described current sample module 521, described cut-out switch module, and described control module 54 is that a MCU is promptly among the figure 541; Display alarm and parameter setting module 53 link to each other with described control module 54.Above-mentioned basic structure is all identical with Fig. 1.In the present embodiment, described cut-out switch module comprises:
1) silicon controlled module 522, link to each other with described current sample module 521, described control module 54, silicon controlled module described in the present embodiment is the one-way SCR of two reverse parallel connections, also can replace with a bidirectional triode thyristor, two same conductings of adopting antiparallel connection to be responsible for exchanging positive half cycle and negative half period respectively of one-way SCR are for load provides power supply;
2) the IGBT module 523, and promptly IGBT module links to each other with described silicon controlled module 522, described control module 54;
3) the accessory power supply module 524, link to each other with described IGBT module 523, described silicon controlled module 522.
4) current sample module 521 passes to control module 54 with the signal that samples, if short-circuit signal, control module 54 is sent signal simultaneously and is given silicon controlled module 522 and IGBT module 523, accessory power supply module 524 is used for a reverse current signal is applied to silicon controlled module 522 by IGBT module 523, silicon controlled module 522 can be turn-offed moment, and the time of shutoff is the microsecond level.
Fig. 5 is the schematic flow sheet of the utility model arc extinguishing formula electric fireproof short-circuit protection, and as can be seen from Figure 5, the utility model arc extinguishing formula electric fireproof short-circuit protection workflow mainly may further comprise the steps: step 11: the main power source module power supply; Step 12: the current sample module is gathered current data, and described current data is sent to control module; Step 13: described control module judges whether described current data is normal, if circulatory monitoring current data, control module are not sent any signal, if not, then changes step 15 over to; Step 15: described control module is sent signal and is given the silicon controlled module of described cut-out switch module and the IGBT module of described cut-out switch module; Step 16: the accessory power supply module of described cut-out switch module provides a reverse current signal; Step 17: described reverse current signal is applied to described silicon controlled module by described IGBT module; Step 18: described silicon controlled module cuts off electric.
Wherein step 15 is to step 18, can sum up to reduce: described control module is sent signal and is given and cut off switch module, and described cut-out switch module cuts off electric.
Though oneself discloses the utility model as above with preferred embodiment, the utility model is not to be defined in this.Any those skilled in the art in not breaking away from spirit and scope of the present utility model, all can do various changes and modification, and therefore protection range of the present utility model should be as the criterion with claim institute restricted portion.
Claims (5)
1. arc extinguishing formula electric fireproof short-circuit protection comprises:
1) main power source module is used to all the other modules of device that working power is provided;
2) current sample module is used for real-time monitoring load electric current;
3) cut off switch module, described cut-out switch module links to each other with described current sample module, and is series in the load circuit;
4) control module, described control module links to each other with described current sample module, described cut-out switch module;
5) display alarm and parameter setting module, described display alarm links to each other with described control module with parameter setting module;
It is characterized in that: described cut-out switch module comprises:
1) silicon controlled module, described silicon controlled module links to each other with described current sample module, described control module;
2) IGBT module, described IGBT module links to each other with described silicon controlled module, described control module;
3) be used to provide the accessory power supply module of reverse current signal, described accessory power supply module links to each other with described IGBT module, described silicon controlled module.
2. arc extinguishing formula electric fireproof short-circuit protection according to claim 1 is characterized in that: described silicon controlled module is a bidirectional triode thyristor or is the one-way SCR of two reverse parallel connections.
3. arc extinguishing formula electric fireproof short-circuit protection according to claim 1, it is characterized in that: described current sample module is a Hall current sensor.
4. arc extinguishing formula electric fireproof short-circuit protection according to claim 1, it is characterized in that: described control module is a MCU.
5. arc extinguishing formula electric fireproof short-circuit protection according to claim 1 is characterized in that: described arc extinguishing formula electric fireproof short-circuit protection also comprises resistance and an electric capacity, and described resistance links to each other with described silicon controlled module with described electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200729719U CN201966578U (en) | 2010-12-31 | 2011-03-18 | Arc extinguishing type electrical fireproof short circuit protection device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106190162A CN102035167A (en) | 2010-12-31 | 2010-12-31 | Arc extinguishing electric fireproof short circuit protector |
| CN201010619016.2 | 2010-12-31 | ||
| CN2011200729719U CN201966578U (en) | 2010-12-31 | 2011-03-18 | Arc extinguishing type electrical fireproof short circuit protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201966578U true CN201966578U (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106190162A Pending CN102035167A (en) | 2010-12-31 | 2010-12-31 | Arc extinguishing electric fireproof short circuit protector |
| CN2011200729719U Expired - Lifetime CN201966578U (en) | 2010-12-31 | 2011-03-18 | Arc extinguishing type electrical fireproof short circuit protection device |
| CN2011100662569A Pending CN102088177A (en) | 2010-12-31 | 2011-03-18 | Arc-extinguishing electric fireproofing short circuit protection device and method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106190162A Pending CN102035167A (en) | 2010-12-31 | 2010-12-31 | Arc extinguishing electric fireproof short circuit protector |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100662569A Pending CN102088177A (en) | 2010-12-31 | 2011-03-18 | Arc-extinguishing electric fireproofing short circuit protection device and method |
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| CN (3) | CN102035167A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088177A (en) * | 2010-12-31 | 2011-06-08 | 上海华宿电气技术有限公司 | Arc-extinguishing electric fireproofing short circuit protection device and method |
| CN114050549A (en) * | 2022-01-11 | 2022-02-15 | 华邦创科(惠州市)智能科技有限公司 | Single-phase power supply quick circuit-breaking protection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102983562B (en) * | 2012-12-14 | 2015-06-24 | 上海诚佳电子科技有限公司 | Current-limiting protector for electrical fire prevention |
| CN103532088A (en) * | 2013-10-25 | 2014-01-22 | 田景洵 | Short-circuit resistance self-reset electronic circuit breaker |
| CN105826895A (en) * | 2016-05-03 | 2016-08-03 | 如皋天安电气科技有限公司 | Special arc-extinction type short circuit protection device for electrified circuit |
| CN110148997B (en) * | 2019-05-22 | 2021-01-15 | 浙江雁科电器有限公司 | Arc extinguishing type electrical fireproof protection device |
| CN110095702A (en) * | 2019-05-22 | 2019-08-06 | 安徽升隆电气有限公司 | A kind of arc performance analysis instrument |
| CN110474428A (en) * | 2019-08-26 | 2019-11-19 | 上海同昭智能科技有限公司 | Wisdom security protection electric cabinet |
| CN111817176A (en) * | 2020-07-21 | 2020-10-23 | 国网山东省电力公司德州供电公司 | Household intelligent electric energy metering box system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316705C (en) * | 2003-06-09 | 2007-05-16 | 湖南正通智能电器有限公司 | Intelligent contactless switch |
| CN101350512A (en) * | 2007-07-19 | 2009-01-21 | 佛山普立华科技有限公司 | Over current protective system |
| CN101345419B (en) * | 2008-05-14 | 2011-06-01 | 西安交通大学 | Series voltage quality regulator and fast investment and cutting method |
| CN102035167A (en) * | 2010-12-31 | 2011-04-27 | 上海华宿电气技术有限公司 | Arc extinguishing electric fireproof short circuit protector |
-
2010
- 2010-12-31 CN CN2010106190162A patent/CN102035167A/en active Pending
-
2011
- 2011-03-18 CN CN2011200729719U patent/CN201966578U/en not_active Expired - Lifetime
- 2011-03-18 CN CN2011100662569A patent/CN102088177A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088177A (en) * | 2010-12-31 | 2011-06-08 | 上海华宿电气技术有限公司 | Arc-extinguishing electric fireproofing short circuit protection device and method |
| CN114050549A (en) * | 2022-01-11 | 2022-02-15 | 华邦创科(惠州市)智能科技有限公司 | Single-phase power supply quick circuit-breaking protection system |
| CN114050549B (en) * | 2022-01-11 | 2022-04-19 | 华邦创科(惠州市)智能科技有限公司 | Single-phase power supply quick circuit-breaking protection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102088177A (en) | 2011-06-08 |
| CN102035167A (en) | 2011-04-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI HUASU ELECTRIC CO., LTD. Free format text: FORMER NAME: SHANGHAI HUASU ELECTRICAL TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201203, room 16, building 88, 203 Darwin Road, Zhangjiang hi tech park, Shanghai, Pudong New Area Patentee after: Shanghai Huasu Electric Co., Ltd. Address before: 201203, No. 88 Darwin Road, Zhangjiang hi tech park, Shanghai, Pudong New Area, No. 16 Patentee before: Shanghai Huasy Electric Technological Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110907 |
|
| CX01 | Expiry of patent term |