CN202770920U - Alternating current vacuum contactor adhesion detection device - Google Patents
Alternating current vacuum contactor adhesion detection device Download PDFInfo
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- CN202770920U CN202770920U CN 201220328841 CN201220328841U CN202770920U CN 202770920 U CN202770920 U CN 202770920U CN 201220328841 CN201220328841 CN 201220328841 CN 201220328841 U CN201220328841 U CN 201220328841U CN 202770920 U CN202770920 U CN 202770920U
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Abstract
The utility model discloses an alternating current vacuum contactor adhesion detection device and belongs to the technical field of electrical equipment. The detection device includes a detection enabling unit and a state output unit, a high-voltage rectification unit, a capacitor voltage-dividing unit and a detection unit. An output end of the detection enabling unit is connected with the high-voltage rectification unit and thereafter is connected to the capacitor voltage-dividing unit, the detection unit and the state output unit successively. With the detection device adopted, the burnout of an upper device caused by a situation that high voltage enters an input end can be effectively prevented, and the adhesion of any main contact point of a vacuum contactor can be factually reflected, thereby improving the fault detection rate of the detection device.
Description
Technical field
The utility model relates to a kind of AC vacuum contactor main contacts adhesion pick-up unit, belongs to technical field of electrical equipment.
Background technology
Coal mine equipment underground work environment is abominable, high humidity, and therefore the characteristics such as flammable explosive gas content is high, and operation vibration is large, and maintenance difficulty is large require control panel reliable.But the mining face under mine power supply quality is poor, and load is large, the frequent startup-shutdown of equipment; very easily cause AC vacuum contactor main contacts adhesion phenomenon; owing to there not being real disconnecting consumers, will cause equipment out of control or open phase fault occurs after the main contacts adhesion, cause casualties and device damage.Coal industry standard MT/T971-20054.7.9.7 bar also requires the major loop main contacts to have the adhesion protection.Only detect wherein the whether adhesion of one group of main contacts but existing adhesion pick-up unit is general, can't truly reflect the whether adhesion of all the other main contactss, easily cause undetected.
Summary of the invention
The deficiency that exists in order to solve above-mentioned existing issue, the utility model provide a kind of rear terminal voltage of direct-detection vacuum contactor to judge the whether vacuum contactor adhesion pick-up unit of adhesion of vacuum contactor.
The technical solution of the utility model is: a kind of AC vacuum contactor adhesion pick-up unit, comprise detecting and enable unit and output unit, also comprise high-voltage rectifying unit, capacitance partial pressure unit and detecting unit, the output terminal that detection enables the unit is connected to the high-voltage rectifying unit, then connects successively capacitance partial pressure unit, detecting unit and output unit;
Described high-voltage rectifying unit is the three-phase half wave retifier that links to each other with auxiliary reclay KA1 output terminal, and the output center point of three-phase half wave retifier is connected to the capacitance partial pressure unit of capacity earth;
Described capacitance partial pressure unit comprises capacitance partial pressure unit current-limiting resistance R11, and the first dividing potential drop capacitor C 1 of connecting successively, the second dividing potential drop capacitor C 2, the 3rd dividing potential drop capacitor C 3, the 4th dividing potential drop capacitor C 4, and with the first dividing potential drop capacitor C 1, the second dividing potential drop capacitor C 2, the 3rd dividing potential drop capacitor C 3, the 4th dividing potential drop capacitor C 4 is the first dividing potential drop capacitive load resistance R 1 of parallel connection successively, the second dividing potential drop capacitive load resistance R 2, the 3rd dividing potential drop capacitive load resistance R 3, the 4th dividing potential drop capacitive load resistance I R4 and the 4th dividing potential drop capacitive load resistance II R5, and with the first dividing potential drop capacitor C 1, the second dividing potential drop capacitor C 2, the 3rd dividing potential drop capacitor C 3, capacitance partial pressure unit loads resistance R 10, the four dividing potential drop capacitive load resistance II R5 of the 4th dividing potential drop capacitor C 4 parallel connections are connected to detecting unit;
Described detecting unit is high pressure optocoupler U1, and this high pressure optocoupler U1 comprises light emitting diode and phototriode, and light emitting diode is connected to the 4th dividing potential drop capacitive load resistance II R5, and phototriode is connected to output unit.
The beneficial effects of the utility model are: photoelectric coupling technology is applied in the vacuum contactor adhesion pick-up unit, make the electric fully isolation of tested end and output terminal, the phenomenon generation that has effectively prevented high pressure from entering output terminal and burnt upper equipment, simultaneously the three phase half wave rectification technology is applied in the vacuum contactor adhesion pick-up unit, the any main contacts adhesion of vacuum contactor can both truly reflect, has improved the fault recall rate of pick-up unit.
Description of drawings
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As depicted in figs. 1 and 2: the utility model comprises that detection enables unit and output unit, also comprise high-voltage rectifying unit, capacitance partial pressure unit and detecting unit, the output terminal that detection enables the unit is connected to the high-voltage rectifying unit, then connects successively capacitance partial pressure unit, detecting unit and output unit;
Described high-voltage rectifying unit is the three-phase half wave retifier that links to each other with auxiliary reclay KA1 output terminal, and the output center point of three-phase half wave retifier is connected to the capacitance partial pressure unit of capacity earth;
Described capacitance partial pressure unit comprises capacitance partial pressure unit current-limiting resistance R11, and the first dividing potential drop capacitor C 1 of connecting successively, the second dividing potential drop capacitor C 2, the 3rd dividing potential drop capacitor C 3, the 4th dividing potential drop capacitor C 4, and with the first dividing potential drop capacitor C 1, the second dividing potential drop capacitor C 2, the 3rd dividing potential drop capacitor C 3, the 4th dividing potential drop capacitor C 4 is the first dividing potential drop capacitive load resistance R 1 of parallel connection successively, the second dividing potential drop capacitive load resistance R 2, the 3rd dividing potential drop capacitive load resistance R 3, the 4th dividing potential drop capacitive load resistance I R4 and the 4th dividing potential drop capacitive load resistance II R5, and with the first dividing potential drop capacitor C 1, the second dividing potential drop capacitor C 2, the 3rd dividing potential drop capacitor C 3, capacitance partial pressure unit loads resistance R 10, the four dividing potential drop capacitive load resistance II R5 of the 4th dividing potential drop capacitor C 4 parallel connections are connected to detecting unit;
Described detecting unit is high pressure optocoupler U1, and this high pressure optocoupler U1 comprises light emitting diode and phototriode, and light emitting diode is connected to the 4th dividing potential drop capacitive load resistance II R5, and phototriode is connected to output unit.
Embodiment one: behind the vacuum contactor disconnecting consumers, auxiliary reclay KA1 control coil must not be electric, auxiliary reclay KA1 normally closed contact is closed, the vacuum contactor rear end respectively with the first commutation diode D1, the second commutation diode D2, the 3rd commutation diode D3 links to each other, if this moment, vacuum contactor had wherein one or more groups main contacts phenomenon that sticks together, the first corresponding commutation diode D1 then, the second commutation diode D2, the 3rd commutation diode D3 conducting, electric signal is delivered to the first dividing potential drop capacitor C 1 by capacitance partial pressure unit current-limiting resistance R11, the second dividing potential drop capacitor C 2, the 3rd dividing potential drop capacitor C 3, the 4th dividing potential drop capacitor C 4, the first dividing potential drop capacitor C 1, the second dividing potential drop capacitor C 2, the both end voltage of the 3rd dividing potential drop capacitor C 3 and the 4th dividing potential drop capacitor C 4 raises gradually, the 4th dividing potential drop capacitive load resistance I R4 and the 4th dividing potential drop capacitive load resistance II R5 both end voltage are also along with the 4th dividing potential drop capacitor C 4 both end voltage raise together, when the 4th dividing potential drop capacitive load resistance II R5 both end voltage surpasses the conduction voltage drop 0.7V of light emitting diode among the high pressure optocoupler U1, lumination of light emitting diode, phototriode saturation conduction in this moment U1 high pressure optocoupler, output signal voltage is about 0.3V.
Embodiment two: behind the vacuum contactor disconnecting consumers, auxiliary reclay KA1 control coil must not be electric, auxiliary reclay KA1 normally closed contact is closed, the vacuum contactor rear end respectively with the first commutation diode D1, the second commutation diode D2, the 3rd commutation diode D3 links to each other, if this moment, the main contacts adhesion phenomenon did not occur in vacuum contactor, the first commutation diode D1 then, the second commutation diode D2, the 3rd commutation diode D3 disconnects, the first dividing potential drop capacitor C 1, the second dividing potential drop capacitor C 2, the 3rd dividing potential drop capacitor C 3, the 4th dividing potential drop capacitor C 4 both end voltage are 0V, the 4th dividing potential drop capacitive load resistance I R4 and the 4th dividing potential drop capacitive load resistance II R5 both end voltage also are 0V, light emitting diode disconnects among the high pressure optocoupler U1 at this moment, phototriode disconnects among the high pressure optocoupler U1, and output signal voltage is output terminal power supply voltage VCC.
Embodiment three: after vacuum contactor is connected load, auxiliary reclay KA1 control coil gets electric, auxiliary reclay KA1 normally closed contact disconnects, in the adhesion pick-up unit except auxiliary reclay KA1 the duty of all devices identical with embodiment 2, output signal voltage is output terminal power supply voltage VCC.
Therefore, can judge the vacuum contactor main contacts phenomenon that whether sticks together according to the voltage of output signal.
Claims (1)
1. AC vacuum contactor adhesion pick-up unit, comprise detecting and enable unit and output unit, characterized by further comprising high-voltage rectifying unit, capacitance partial pressure unit and detecting unit, the output terminal that detection enables the unit is connected to the high-voltage rectifying unit, then connects successively capacitance partial pressure unit, detecting unit and output unit;
Described high-voltage rectifying unit is the three-phase half wave retifier that links to each other with auxiliary reclay KA1 output terminal, and the output center point of three-phase half wave retifier is connected to the capacitance partial pressure unit of capacity earth;
Described capacitance partial pressure unit comprises capacitance partial pressure unit current-limiting resistance R11, and the first dividing potential drop capacitor C 1 of connecting successively, the second dividing potential drop capacitor C 2, the 3rd dividing potential drop capacitor C 3, the 4th dividing potential drop capacitor C 4, and with the first dividing potential drop capacitor C 1, the second dividing potential drop capacitor C 2, the 3rd dividing potential drop capacitor C 3, the 4th dividing potential drop capacitor C 4 is the first dividing potential drop capacitive load resistance R 1 of parallel connection successively, the second dividing potential drop capacitive load resistance R 2, the 3rd dividing potential drop capacitive load resistance R 3, the 4th dividing potential drop capacitive load resistance I R4 and the 4th dividing potential drop capacitive load resistance II R5, and with the first dividing potential drop capacitor C 1, the second dividing potential drop capacitor C 2, the 3rd dividing potential drop capacitor C 3, capacitance partial pressure unit loads resistance R 10, the four dividing potential drop capacitive load resistance II R5 of the 4th dividing potential drop capacitor C 4 parallel connections are connected to detecting unit;
Described detecting unit is high pressure optocoupler U1, and this high pressure optocoupler U1 comprises light emitting diode and phototriode, and light emitting diode is connected to the 4th dividing potential drop capacitive load resistance II R5, and phototriode is connected to output unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220328841 CN202770920U (en) | 2012-07-09 | 2012-07-09 | Alternating current vacuum contactor adhesion detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220328841 CN202770920U (en) | 2012-07-09 | 2012-07-09 | Alternating current vacuum contactor adhesion detection device |
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| CN202770920U true CN202770920U (en) | 2013-03-06 |
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| CN 201220328841 Expired - Lifetime CN202770920U (en) | 2012-07-09 | 2012-07-09 | Alternating current vacuum contactor adhesion detection device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090229A (en) * | 2014-06-11 | 2014-10-08 | 惠州市亿能电子有限公司 | Multipath high-voltage relay output adhesion detection circuit and detection method |
| CN106124980A (en) * | 2016-08-09 | 2016-11-16 | 潍柴动力股份有限公司 | The electrokinetic cell major loop relay fault detecting circuit of a kind of electric automobile and detection method thereof |
| CN106300229A (en) * | 2015-05-19 | 2017-01-04 | 观致汽车有限公司 | A kind of for protecting equipment and the method for high-tension battery electricity system |
| CN106597274A (en) * | 2016-12-29 | 2017-04-26 | 洛阳宝盈智控科技有限公司 | Contactor adhesion determination method |
| CN106740200A (en) * | 2016-12-19 | 2017-05-31 | 西安特锐德智能充电科技有限公司 | The charging method of charging device, relay adhesion detection method and electric automobile |
| CN108832673A (en) * | 2018-06-06 | 2018-11-16 | 西安特锐德智能充电科技有限公司 | The starting method for measuring charged of DC charging system, PDU and charging path |
| CN108982992A (en) * | 2018-06-06 | 2018-12-11 | 西安特锐德智能充电科技有限公司 | The online addition detection method of DC charging system, PDU and charging path |
| CN109782118A (en) * | 2018-12-17 | 2019-05-21 | 珠海格力电器股份有限公司 | A kind of adhesion detection device, charging circuit and its adhesion detection method |
-
2012
- 2012-07-09 CN CN 201220328841 patent/CN202770920U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090229A (en) * | 2014-06-11 | 2014-10-08 | 惠州市亿能电子有限公司 | Multipath high-voltage relay output adhesion detection circuit and detection method |
| CN104090229B (en) * | 2014-06-11 | 2017-06-13 | 惠州市亿能电子有限公司 | The detection circuit and its detection method of multichannel high-voltage relay output adhesion |
| CN106300229B (en) * | 2015-05-19 | 2019-04-12 | 观致汽车有限公司 | It is a kind of for protecting the device and method of high-tension battery electricity system |
| CN106300229A (en) * | 2015-05-19 | 2017-01-04 | 观致汽车有限公司 | A kind of for protecting equipment and the method for high-tension battery electricity system |
| CN106124980A (en) * | 2016-08-09 | 2016-11-16 | 潍柴动力股份有限公司 | The electrokinetic cell major loop relay fault detecting circuit of a kind of electric automobile and detection method thereof |
| CN106124980B (en) * | 2016-08-09 | 2018-11-16 | 潍柴动力股份有限公司 | A kind of the power battery major loop relay fault detecting circuit and its detection method of electric car |
| CN106740200A (en) * | 2016-12-19 | 2017-05-31 | 西安特锐德智能充电科技有限公司 | The charging method of charging device, relay adhesion detection method and electric automobile |
| CN106740200B (en) * | 2016-12-19 | 2019-09-06 | 西安特锐德智能充电科技有限公司 | The charging method of charging unit, relay adhesion detection method and electric car |
| CN106597274A (en) * | 2016-12-29 | 2017-04-26 | 洛阳宝盈智控科技有限公司 | Contactor adhesion determination method |
| CN106597274B (en) * | 2016-12-29 | 2019-06-21 | 洛阳宝盈智控科技有限公司 | A kind of contactor adhesion determination method |
| CN108982992A (en) * | 2018-06-06 | 2018-12-11 | 西安特锐德智能充电科技有限公司 | The online addition detection method of DC charging system, PDU and charging path |
| CN108832673A (en) * | 2018-06-06 | 2018-11-16 | 西安特锐德智能充电科技有限公司 | The starting method for measuring charged of DC charging system, PDU and charging path |
| CN108982992B (en) * | 2018-06-06 | 2020-12-08 | 西安特锐德智能充电科技有限公司 | Direct current charging system, PDU (Power distribution Unit) and online adding detection method of charging path |
| CN109782118A (en) * | 2018-12-17 | 2019-05-21 | 珠海格力电器股份有限公司 | A kind of adhesion detection device, charging circuit and its adhesion detection method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |
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| CX01 | Expiry of patent term |