CN110853863A - Anti-burning self-protection opening and closing electromagnet device and control method thereof - Google Patents
Anti-burning self-protection opening and closing electromagnet device and control method thereof Download PDFInfo
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- CN110853863A CN110853863A CN201911232629.8A CN201911232629A CN110853863A CN 110853863 A CN110853863 A CN 110853863A CN 201911232629 A CN201911232629 A CN 201911232629A CN 110853863 A CN110853863 A CN 110853863A
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- temperature control
- control switch
- normally closed
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- electromagnet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/064—Circuit arrangements for actuating electromagnets
Abstract
The invention belongs to the field of electronic circuit design and discloses an anti-burning self-protection opening and closing electromagnet device and a control method thereof, wherein the device comprises an S1 normally closed temperature control switch, an S2 normally closed temperature control switch, an S3 normally open temperature control switch and an electromagnet coil; the S1 normally closed temperature control switch, the S2 normally closed temperature control switch and the electromagnet coil are connected in series, and the S3 normally open temperature control switch is connected in parallel at two ends of the S2 normally closed temperature control switch. The operating temperature of the S1 normally closed temperature control switch is higher than that of the S3 normally open temperature control switch, and the operating temperature of the S3 normally open temperature control switch is higher than that of the S2 normally closed temperature control switch. The S1 normally closed temperature control switch is of a type which is automatically closed after power failure or a type which is not automatically closed after power failure. The temperature control circuit formed by a plurality of temperature control switches is adopted, so that the electromagnet coil can be operated for multiple times in the circuit, and the reliability and the safety of the circuit are improved.
Description
Technical Field
The invention belongs to the field of electronic circuit design, and particularly relates to an anti-burning self-protection opening and closing electromagnet device and a control method thereof.
Background
The opening and closing electromagnet coil is one of the final executing components of the control and protection circuit of the power system and important components of the operating mechanism of the high-voltage circuit breaker, and plays a significant role in the safe and reliable operation of the power system.
The opening and closing electromagnet coil is used as an instant working element and is assembled on a control mechanism of power distribution cabinet equipment, when the mechanism needs opening and closing, the opening and closing electromagnet is electrified, and an iron core impacts a tripping bent plate of the mechanism, so that the mechanism can be quickly opened and closed by utilizing an energy storage spring.
When in operation, the switching-on and switching-off mechanism is often jammed, the auxiliary contact is poor, or the voltage drop of a control loop and other reasons cause the coil to be electrified for a long time, the phenomenon of burning the switching-on and switching-off coil occurs, and adverse effects are brought to the safe and stable operation of a power grid.
At present, an existing opening and closing electromagnet works instantly once in a normal state, but when an operating mechanism is lubricated to fail and is jammed or an operating power supply is in a power-shortage state, a tripping bent plate cannot be pushed open once due to opening and closing, opening and closing signals cannot be switched in time, and finally the opening and closing electromagnet is burnt due to long-term electrification.
Therefore, the existing opening and closing electromagnet has only one time and only one action chance when meeting the fault. Once burned, it is discarded and can only wait for maintenance. And the waiting process is very long, and accessories with the same model parameters need to be found or after-sales service personnel of an electric cabinet production factory are arranged to arrive at a field disassembling device to replace the opening and closing electromagnet, so that the timely power supply of a user is influenced. Causing unnecessary economic losses for both equipment manufacturers and direct users.
The patent with the application number of CN201610543922.6 discloses an intelligent control module of a circuit breaker opening and closing electromagnet, which comprises an input power supply, a rectification filter circuit and a power electronic switch which are sequentially connected; the output end of the power electronic switch is respectively connected with the input ends of the closing coil and the opening coil; the output ends of the closing coil and the opening coil are respectively connected with a normally open contact and a normally closed contact of a single-pole double-throw relay, and the immobile end of the single-pole double-throw relay is connected with the input end of a Hall current sensor; the output end of the Hall current sensor is connected with the controller; the controller is connected with the input end of the isolation driving circuit, and the output end of the isolation driving circuit is connected with the power electronic switch to complete closed-loop control of coil current. The invention carries out closed-loop chopping control on the coil current of the opening and closing electromagnet, and fundamentally changes the excitation mode of the opening and closing electromagnet. However, it is obvious that the device provided by the patent is too complex, firstly, more components introduce unstable factors, and secondly, the use and maintenance cost is increased.
Disclosure of Invention
The invention aims to disclose a burning-proof self-protection opening and closing electromagnet device with high reliability, good safety and low cost and a control method thereof.
The purpose of the invention is realized as follows:
a can realize the burning-proof self-protecting opening and closing electromagnet device of the action two times or more, including S1 normally closed temperature control switch 1, S2 normally closed temperature control switch 2, S3 normally open temperature control switch 3 and electromagnet coil 4;
the S1 normally closed temperature control switch 1, the S2 normally closed temperature control switch 2 and the electromagnet coil 4 are connected in series, and the S3 normally open temperature control switch 3 is connected in parallel at two ends of the S2 normally closed temperature control switch 2.
Further, the operating temperature of the S1 normally closed temperature control switch 1 is higher than the operating temperature of the S3 normally open temperature control switch 3, and the operating temperature of the S3 normally open temperature control switch 3 is higher than the operating temperature of the S2 normally closed temperature control switch 2.
Further, the normally closed temperature control switch 1 of S1 is a type that closes automatically after power failure or a type that does not close automatically after power failure.
Further, a control method of the anti-burning self-protection opening and closing electromagnet device capable of realizing two or more actions comprises the following steps:
step (1): the S1 normally closed temperature control switch 1, the S2 normally closed temperature control switch 2 and the electromagnet coil 4 are connected in series, then the S3 normally open temperature control switch 3 is connected in parallel at two ends of the S2 normally closed temperature control switch 2, and then a circuit is connected;
step (2): when the opening and closing electromagnet receives a signal, the opening and closing electromagnet acts for the first time, so that the electromagnet coil 4 is electrified and generates heat, when the electromagnet coil 4 is electrified for a long time in case of a fault, the temperature of the S2 normally-closed temperature control switch 2 reaches the action temperature of the S2 normally-closed temperature control switch 2, the S2 normally-closed temperature control switch 2 is disconnected, and the electromagnet coil 4 is reset after power failure;
and (3): after the S2 normally-closed temperature control switch 2 is switched off, the temperature of the electromagnet coil 4 is still continuously increased, so that the S3 normally-open temperature control switch 3 is switched on, and the opening and closing electromagnet realizes the second action;
and (4): if the mechanism top plate is not knocked open by the first action and the second action of the opening and closing electromagnet, the electromagnet coil 4 continues to generate heat to raise the temperature, and after the temperature reaches the action temperature of the S1 normally-closed temperature control switch 1, the S1 normally-closed temperature control switch 1 is switched off;
and (5): if the S1 normally closed temperature control switch 1 is of a type which is automatically closed after power failure, the temperature drops after a certain time, and the S1 normally closed temperature control switch 1 is automatically closed; and if the S1 normally-closed temperature control switch 1 is of a type which is not automatically closed after power failure, waiting for a worker to manually close.
The invention has the beneficial effects that:
the temperature control circuit formed by the temperature control switches is adopted, so that the electromagnet coil can be repeatedly operated in the circuit, the reliability of the circuit is improved, the safety of the circuit is improved, and the use and maintenance cost is reduced.
Drawings
Fig. 1 is a schematic diagram of an anti-burning self-protection opening and closing electromagnet device capable of realizing two or more actions.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the invention is suitable for secondary control components of VS1 vacuum circuit breaker, ZW32, ZW20 on-off circuit breaker and gas-filled cabinet looped netowrk cabinet and other power transmission and distribution equipment, when the switching equipment needs to be switched on and off, the switching-on and off electromagnet can rapidly act, so that the equipment can reliably operate, and the maintenance-free effect is realized.
Example 1:
as shown in figure 1, a No. 1 normally closed temperature control switch S1 is connected in series in the electromagnet coil, the other two temperature control switches are connected in parallel, and No. 2 is normally closed S2. No. 3 is normally open S3; note: the normally open temperature control switch S3 has a higher temperature set point than the normally closed temperature switch S2. The S2 and the S3 are connected in parallel and then are connected in series with the S1. Then the coil is connected with the electromagnet coil in series to form a closed loop.
a. When the opening and closing electromagnet receives signals, the first action is carried out, the principle that the electromagnetic coil generates heat when electrified is utilized, when the electromagnetic coil is electrified and heated to a certain degree for a long time in case of faults, the No. 2 normally closed temperature control switch S2 is switched off, the power supply is switched off firstly, and the opening and closing electromagnet coil is reset after power failure.
b. And by utilizing the characteristic that the coil continuously rises in temperature, the No. 3 normally-open temperature control switch S3 is closed and switched on in a short time, the electromagnet is switched on in a short time to realize the second electrifying action, so that the accident is prevented from being expanded, if the mechanism top plate cannot be knocked off in two actions, and finally when the temperature rise reaches the final protection point set in the No. 1S 1, the power supply is switched off in S1, so that the coil of the electromagnet is prevented from being burnt out due to overheating.
c. After the No. 1 normally-closed temperature control switch S1 is switched off and the temperature in the coil is reduced after a period of time, S1 is switched on, the power supply is switched on again, and the opening and closing electromagnet is operated again.
Note: in addition, the No. 1 final stage normally closed temperature control switch S1 can also adopt a power-off reset type, namely, after the normally closed temperature control switch S1 is switched off, the power can be switched on only by manual power-off, and the automatic reset cannot be realized. The emergency switch-on device can prevent accidents caused by sudden switch-on under the condition that operators in special occasions are unaware.
After the technical scheme of the invention is adopted, when the opening and closing electromagnet receives signals, the first action is carried out, if the opening and closing electromagnet is electrified for a long time due to faults, the power supply is automatically cut off after the temperature rises to a certain degree, then the second opening and closing action is tried in a short time, and generally, the characteristic that the fastening amount of a mechanism half shaft is gradual is utilized, and the tasks are basically completed by the two actions. If the faults cannot be eliminated by the two actions, the electromagnet coil cannot be burnt out finally due to the sharp rise of heat. The function of protecting the electromagnet is achieved. After the power failure, the temperature is reduced, the electromagnet can be electrified again, so that the opening and closing electromagnet can be repeatedly used, the maintenance and the replacement are not needed, and the economic loss of after-sale maintenance and the waiting time of a user are avoided.
The above description is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a prevent burning self preservation protects divide-shut brake electromagnet device which characterized in that: comprises an S1 normally closed temperature control switch (1), an S2 normally closed temperature control switch (2), an S3 normally open temperature control switch (3) and an electromagnet coil (4);
the S1 normally closed temperature control switch (1), the S2 normally closed temperature control switch (2) and the electromagnet coil (4) are connected in series, and the S3 normally open temperature control switch (3) is connected in parallel at two ends of the S2 normally closed temperature control switch (2).
2. The anti-burning self-protection opening and closing electromagnet device according to claim 1, characterized in that: the operating temperature of the S1 normally closed temperature control switch (1) is higher than that of the S3 normally open temperature control switch (3), and the operating temperature of the S3 normally open temperature control switch (3) is higher than that of the S2 normally closed temperature control switch (2).
3. The anti-burning self-protection opening and closing electromagnet device according to claim 1, characterized in that: the S1 normally closed temperature control switch (1) is of a type which is automatically closed after power failure or a type which is not automatically closed after power failure.
4. The control method of the anti-burning self-protecting opening and closing electromagnet device according to any one of claims 1 to 3, characterized in that: comprises the following steps:
step (1): an S1 normally closed temperature control switch (1), an S2 normally closed temperature control switch (2) and an electromagnet coil (4) are connected in series, then an S3 normally open temperature control switch (3) is connected in parallel at two ends of the S2 normally closed temperature control switch (2), and then a circuit is connected;
step (2): when the opening and closing electromagnet receives a signal, the opening and closing electromagnet acts for the first time, so that the electromagnet coil (4) is electrified and generates heat, when the electromagnet coil (4) is electrified for a long time in case of failure, the temperature of the S2 normally closed temperature control switch (2) reaches the action temperature of the S2 normally closed temperature control switch (2), the S2 normally closed temperature control switch (2) is disconnected, and the electromagnet coil (4) is reset after power failure;
and (3): after the S2 normally-closed temperature control switch (2) is switched off, the temperature of the electromagnet coil (4) is still continuously increased, so that the S3 normally-open temperature control switch (3) is closed, and the opening and closing electromagnet realizes the second action;
and (4): if the mechanism top plate is not knocked open by the first action and the second action of the opening and closing electromagnet, the electromagnet coil (4) continuously generates heat to raise the temperature, and after the temperature reaches the action temperature of the S1 normally closed temperature control switch (1), the S1 normally closed temperature control switch (1) is switched off;
and (5): if the S1 normally closed temperature control switch (1) is of a type which is automatically closed after power failure, the temperature drops after a certain time, and the S1 normally closed temperature control switch (1) is automatically closed; and if the S1 normally-closed temperature control switch (1) is of a type which is not automatically closed after power failure, waiting for a worker to manually close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232629.8A CN110853863A (en) | 2019-12-05 | 2019-12-05 | Anti-burning self-protection opening and closing electromagnet device and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232629.8A CN110853863A (en) | 2019-12-05 | 2019-12-05 | Anti-burning self-protection opening and closing electromagnet device and control method thereof |
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| CN110853863A true CN110853863A (en) | 2020-02-28 |
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| CN201911232629.8A Pending CN110853863A (en) | 2019-12-05 | 2019-12-05 | Anti-burning self-protection opening and closing electromagnet device and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889979A (en) * | 2021-10-13 | 2022-01-04 | 广西电网有限责任公司电力科学研究院 | GIS opening and closing coil double protection device |
| CN114109621A (en) * | 2021-11-30 | 2022-03-01 | 重庆驼航科技有限公司 | Air door controlling means that acts as go-between |
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| JP2597394B2 (en) * | 1988-09-09 | 1997-04-02 | 株式会社ゼクセル | Vehicle air conditioner |
| CN101307909A (en) * | 2008-05-19 | 2008-11-19 | 北京高瞻科技有限公司 | Thermal explosion pulse sootblower possessing safeguard for ultra-temperature |
| CN201854019U (en) * | 2010-11-24 | 2011-06-01 | 四川省电力公司眉山公司 | Electric power temperature control device |
| CN203433382U (en) * | 2013-07-31 | 2014-02-12 | 国家电网公司 | Multifunctional control box for transformer fan |
| EP2733808A1 (en) * | 2012-11-16 | 2014-05-21 | ABB Technology AG | Method and system for suppressing very fast transients |
| CN204270172U (en) * | 2014-12-08 | 2015-04-15 | 梁伟国 | A kind of temperature control equipment |
| CN105281301A (en) * | 2015-11-20 | 2016-01-27 | 国网浙江省电力公司文成县供电公司 | Switch electromagnet coil protection device |
| CN107134752A (en) * | 2017-07-07 | 2017-09-05 | 孙新昱 | The control method and device that power supply adaptor is non-loaded to be automatically powered off |
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2019
- 2019-12-05 CN CN201911232629.8A patent/CN110853863A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2597394B2 (en) * | 1988-09-09 | 1997-04-02 | 株式会社ゼクセル | Vehicle air conditioner |
| CN101307909A (en) * | 2008-05-19 | 2008-11-19 | 北京高瞻科技有限公司 | Thermal explosion pulse sootblower possessing safeguard for ultra-temperature |
| CN201854019U (en) * | 2010-11-24 | 2011-06-01 | 四川省电力公司眉山公司 | Electric power temperature control device |
| EP2733808A1 (en) * | 2012-11-16 | 2014-05-21 | ABB Technology AG | Method and system for suppressing very fast transients |
| CN203433382U (en) * | 2013-07-31 | 2014-02-12 | 国家电网公司 | Multifunctional control box for transformer fan |
| CN204270172U (en) * | 2014-12-08 | 2015-04-15 | 梁伟国 | A kind of temperature control equipment |
| CN105281301A (en) * | 2015-11-20 | 2016-01-27 | 国网浙江省电力公司文成县供电公司 | Switch electromagnet coil protection device |
| CN107134752A (en) * | 2017-07-07 | 2017-09-05 | 孙新昱 | The control method and device that power supply adaptor is non-loaded to be automatically powered off |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889979A (en) * | 2021-10-13 | 2022-01-04 | 广西电网有限责任公司电力科学研究院 | GIS opening and closing coil double protection device |
| CN114109621A (en) * | 2021-11-30 | 2022-03-01 | 重庆驼航科技有限公司 | Air door controlling means that acts as go-between |
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Application publication date: 20200228 |
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