CN104035343B - A kind of high voltage electric equipment and on-off circuit thereof - Google Patents
A kind of high voltage electric equipment and on-off circuit thereof Download PDFInfo
- Publication number
- CN104035343B CN104035343B CN201310073570.9A CN201310073570A CN104035343B CN 104035343 B CN104035343 B CN 104035343B CN 201310073570 A CN201310073570 A CN 201310073570A CN 104035343 B CN104035343 B CN 104035343B
- Authority
- CN
- China
- Prior art keywords
- circuit
- switch
- pin
- diode
- electric capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention belongs to electric power system design field, it is provided that a kind of high voltage electric equipment and on-off circuit thereof.On-off circuit therein includes: switch SW1, resistance R1, electric capacity C1, pretreatment circuit, timer chip and relay, may also include a leadage circuit.Operator directly operate the low tension switch SW1 away from high-voltage switch gear, the break-make of the low voltage switching circuit time-delay relay being made up of switch SW1, resistance R1, electric capacity C1, pretreatment circuit, timer chip, it is achieved control the break-make of high voltage power supply.Owing to the two ends contact of low tension switch SW1 does not exist arc discharge, thus ensure that the personal safety of operator, relative to prior art, improve the safety of operation, decrease Danger Electric shock risk.
Description
Technical field
The invention belongs to electric power system design field, particularly relate to a kind of high voltage electric equipment and on-off circuit thereof.
Background technology
In power system, high voltage electric equipment refers to that electric pressure is at 1000v and above power equipment；
High voltage power supply refers to the power supply of high voltage electric equipment；High-voltage switch gear refers to be connected on high voltage power supply and high pressure
Equipment between electrical equipment, this equipment needs according to operation of power networks and is put into by high voltage electric equipment or exit
Run, or when high voltage electric equipment breaks down, high voltage electric equipment is excised from electrical network.
In prior art, need to directly be operated high-voltage switch gear by operator's on-site manual, to control high voltage power supply
Break-make.But during being switched on or switched off of high voltage power supply, between the two ends contact of high-voltage switch gear easily
Formed high-voltage arc, this electric arc be prone to the Body contact of operator and cause electric shock accidents, poor stability.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of on-off circuit, it is intended to solve, in prior art, to need behaviour
Make personnel and directly operate high-voltage switch gear to connect high voltage power supply, easily cause electric shock accidents, asking of poor stability
Topic.
The embodiment of the present invention is achieved in that a kind of on-off circuit, described on-off circuit include switching SW1,
Resistance R1, electric capacity C1, described on-off circuit also includes:
Pretreatment circuit, the input of described pretreatment circuit connects a low positive pressure by described switch SW1 and draws
Foot, described pretreatment circuit, for when described switch SW1 closes, inputs via described low positive pressure pin
Low tension carry out after rectifying and wave-filtering and voltage stabilizing process, exporting a unidirectional current；
Timer chip, the triggering pin of described timer chip connects described pre-place by described resistance R1
The outfan of reason circuit, and bear pin, described timer chip by the described low pressure of described electric capacity C1 connection
For when the charging voltage at described electric capacity C1 two ends reaches internal reference voltage, time delay exports a high level；
Relay, the coil of described relay is connected to the output pin of described timer chip and described low pressure
Between negative pin, the switch of described relay is connected between high voltage power supply and high voltage electric equipment, described in continue
The switch of electrical equipment is for the Guan Bi when described timer chip exports described high level, to connect described high-tension electricity
Source.
The another object of the embodiment of the present invention is to provide a kind of high voltage electric equipment, including an on-off circuit,
Described on-off circuit includes switching SW1, resistance R1, electric capacity C1, and described on-off circuit also includes:
Pretreatment circuit, the input of described pretreatment circuit connects a low positive pressure by described switch SW1 and draws
Foot, described pretreatment circuit, for when described switch SW1 closes, inputs via described low positive pressure pin
Low tension carry out after rectifying and wave-filtering and voltage stabilizing process, exporting a unidirectional current；
Timer chip, the triggering pin of described timer chip connects described pre-place by described resistance R1
The outfan of reason circuit, and bear pin, described timer chip by the described low pressure of described electric capacity C1 connection
For when the charging voltage at described electric capacity C1 two ends reaches internal reference voltage, time delay exports a high level；
Relay, the coil of described relay is connected to the output pin of described timer chip and described low pressure
Between negative pin, the switch of described relay is connected between high voltage power supply and high voltage electric equipment, described in continue
The switch of electrical equipment is for the Guan Bi when described timer chip exports described high level, to connect described high-tension electricity
Source.
In the high voltage electric equipment of present invention offer and on-off circuit thereof, operator directly operate away from high pressure
The low tension switch SW1 of switch, by the break-make of low voltage switching circuit delays time to control high voltage switch circuit, it is achieved right
The break-make of high voltage power supply controls.Owing to the two ends contact of low tension switch SW1 does not exist arc discharge, thus protect
Demonstrate,prove the personal safety of operator, relative to prior art, improve the safety of operation, decrease tactile
Electricity is dangerous.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the on-off circuit that the embodiment of the present invention one provides；
Fig. 2 is the circuit diagram of pretreatment circuit in Fig. 1；
Fig. 3 is the circuit theory diagrams of the on-off circuit that the embodiment of the present invention two provides；
Fig. 4 is the circuit diagram of leadage circuit in Fig. 3.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
The problem existed for existing high voltage power supply break-make mode, the present invention proposes a kind of on-off circuit, should
On-off circuit includes a low voltage switching circuit and a high voltage switch circuit, and operator directly control low tension switch
The action of circuit, is controlled high voltage switch circuit by low voltage switching circuit, and then realizes the break-make control of high voltage power supply
System.Implementation below in conjunction with the embodiment detailed description present invention:
The embodiment of the present invention one provides a kind of on-off circuit, and this on-off circuit can realize connecing high voltage power supply
Logical control.
Specifically, as it is shown in figure 1, this on-off circuit includes: switch SW1, pretreatment circuit 11, electricity
Resistance R1, electric capacity C1, timer chip U1 and a relay.
Wherein, the input of pretreatment circuit 11 by switch SW1 connect a low positive pressure pin+, pretreatment
Circuit 11 is for when switching SW1 Guan Bi, carrying out rectification filter to via the low tension of low positive pressure pin+input
After involving voltage stabilizing process, exporting a unidirectional current, this low tension is meant less than or is equal to the safe voltage of 36V；
Further, as in figure 2 it is shown, pretreatment circuit 11 may include that diode D1, electric capacity C1,
Stabilivolt VD1.Wherein, the anode of diode D1 is as the input of pretreatment circuit 11, diode
The negative electrode of D1 is as the outfan of pretreatment circuit 11, for the low tension of input is carried out rectification process；
One end of electric capacity C1 connects the negative electrode of diode D1, the other end connect low pressure bear pin-, for two poles
Unidirectional current after pipe D1 rectification is filtered processing；The negative electrode of stabilivolt VD1 connects the moon of diode D1
Pole, the anode of stabilivolt VD1 connect low pressure bear pin-, carry out for unidirectional current filtered to electric capacity C1
Voltage stabilizing.
Wherein, the pin 2 that triggers of timer chip U1 connects the defeated of pretreatment circuit 11 by resistance R1
Go out end, and by electric capacity C1 connection low pressure bear pin-, the reset pin 4 of timer chip U1 and power supply
Voltage pin 8 connects the outfan of pretreatment circuit 11, control voltage pin 5 He of timer chip U1
Grounding pin 1 connect low pressure bear pin-, timer chip U1 is for when the charging voltage at electric capacity C1 two ends
When reaching internal reference voltage, time delay exports a high level.Preferably, in the embodiment of the present invention one, regularly
Device chip U1 is one 555 timer chips.
Wherein, the coil J of relay be connected to the output pin 3 of timer chip U1 and low pressure bear pin-
Between, the switch SK of relay is connected between high voltage power supply and high voltage electric equipment, the switch of relay
SK is for the Guan Bi when timer chip U1 exports high level, thus connects high voltage power supply.
In the embodiment of the present invention one, switch SW1, pretreatment circuit 11, resistance R1, electric capacity C1, regularly
Device chip U1 constitutes low voltage switching circuit, and switch SW1 therein is low tension switch；Relay is as high pressure
On-off circuit, the switch SK of relay is high-voltage switch gear.The operation principle of the circuit shown in Fig. 1 is: if
Need to access high voltage power supply, then operator connect Guan Bi switch SW1, and low tension is via pretreatment circuit 11
Process after, the unidirectional current of output to electric capacity C1 charge.Owing to electric capacity C1 exists a charging duration, work as electricity
When the charging voltage at appearance C1 two ends is less than the internal reference voltage of timer chip U1, timer chip U1
Without output, the relay switch SK as high-voltage switch gear disconnects, and high voltage power supply does not accesses；As electric capacity C1 two
When the charging voltage of end reaches the internal reference voltage of timer chip U1, timer chip U1 output one is high
Level so that relay coil J is energized, the switch SK of relay connects, thus high-tension electricity is connected in time delay
Source.
In the on-off circuit that the embodiment of the present invention one provides, it is low that operator directly operate away from high-voltage switch gear
Compress switch SW1, by the connection of low voltage switching circuit delays time to control high voltage switch circuit, it is achieved to high voltage power supply
Connection control.Owing to the two ends contact of low tension switch SW1 does not exist arc discharge, thus ensure that operation
The personal safety of personnel, relative to prior art, improves the safety of operation, decreases Danger Electric shock risk.
The embodiment of the present invention two provides a kind of on-off circuit, and high voltage power supply is connect by this on-off circuit in realization
While logical control, also can realize the shutoff to high voltage power supply and control, as shown in Figure 3.
Different from shown in Fig. 1, in the embodiment of the present invention two, also include leadage circuit 12, leadage circuit 12
First end connect timer chip U1 triggering pin 2, the earth terminal ground connection of leadage circuit 12, release
Second end of circuit 12 connects the outfan of pretreatment circuit 11；Leadage circuit 12 is used for switching SW1 and breaks
When opening, it is provided that the path of releasing of electric capacity C1.
Further, as shown in Figure 4, leadage circuit 12 may include that diode D2 and resistance R2.
The anode of diode D2 is as the first end of leadage circuit 12, and the negative electrode of diode D2 is as leadage circuit
Second end of 12, the negative electrode of diode D2 simultaneously by resistance R2 connect low pressure bear pin-.
In conjunction with Fig. 3 and Fig. 4, operationally, it connects height to the on-off circuit that second embodiment of the invention provides
The principle of voltage source as described in the first embodiment of the present invention, is not repeated herein；It is in connection shape in high voltage power supply
Under state, to disconnect high voltage power supply, then operator's on-off switch SW1, afterwards, electric capacity C1 profit
The path discharge voltage of releasing of pin-formation is born, as electric capacity C1 two with diode D2, resistance R2 and low pressure
When the voltage of end is less than the internal reference voltage of timer chip U1, timer chip U1 stops output, continues
Electric switch SK disconnects, so that high voltage power supply disconnects.
The on-off circuit that the embodiment of the present invention two provides, while the connection realizing high voltage power supply controls, also may be used
The shutoff utilizing leadage circuit 12 to realize high voltage power supply controls, thus further increases the safety of operation,
Decrease Danger Electric shock risk.
The embodiment of the present invention three provides a kind of high voltage electric equipment, including the as above embodiment of the present invention one or basis
The on-off circuit of the high voltage electric equipment described in inventive embodiments two, is not repeated herein.
In sum, in the on-off circuit that the present invention provides, operator directly operate away from high-voltage switch gear
Low tension switch SW1, by the break-make of low voltage switching circuit delays time to control high voltage switch circuit, it is achieved to high-tension electricity
The break-make in source controls.Owing to the two ends contact of low tension switch SW1 does not exist arc discharge, thus ensure that behaviour
Make the personal safety of personnel, relative to prior art, improve the safety of operation, decrease Danger Electric shock risk.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method is
Can be completed by the hardware that program controls to be correlated with, described program can be stored in a computer-readable
Taking in storage medium, described storage medium, such as ROM/RAM, disk, CD etc..
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (10)
1. an on-off circuit, it is characterised in that described on-off circuit include switch SW1, resistance R1,
Electric capacity C1, described on-off circuit also includes:
Pretreatment circuit, the input of described pretreatment circuit connects a low positive pressure by described switch SW1 and draws
Foot, described pretreatment circuit, for when described switch SW1 closes, inputs via described low positive pressure pin
Low tension carry out after rectifying and wave-filtering and voltage stabilizing process, exporting a unidirectional current；
Timer chip, the triggering pin of described timer chip connects described pre-place by described resistance R1
The outfan of reason circuit, and bear pin by described electric capacity C1 connection low pressure, described timer chip is used for
When the charging voltage at described electric capacity C1 two ends reaches internal reference voltage, time delay exports a high level；
Relay, the coil of described relay is connected to the output pin of described timer chip and described low pressure
Between negative pin, the switch of described relay is connected between high voltage power supply and high voltage electric equipment, described in continue
The switch of electrical equipment is for the Guan Bi when described timer chip exports described high level, to connect described high-tension electricity
Source.
2. on-off circuit as claimed in claim 1, it is characterised in that described pretreatment circuit includes:
Diode D1, the anode of described diode D1 as the input of described pretreatment circuit, described two
The negative electrode of pole pipe D1 is as the outfan of described pretreatment circuit；
One end of electric capacity C1, described electric capacity C1 connects the negative electrode of described diode D1, described electric capacity C1
The other end connect described low pressure bear pin；
The negative electrode of stabilivolt VD1, described stabilivolt VD1 connects the negative electrode of described diode D1, described surely
The anode of pressure pipe VD1 connects described low pressure and bears pin.
3. on-off circuit as claimed in claim 1, it is characterised in that described timer chip is 555
Timer chip.
4. the on-off circuit as described in any one of claims 1 to 3, it is characterised in that described on-off circuit
Also include:
Leadage circuit, the first end of described leadage circuit connects the triggering pin of described timer chip, described
The earth terminal ground connection of leadage circuit, the second end of described leadage circuit connects the outfan of described pretreatment circuit,
Described leadage circuit is for when described switch SW1 disconnects, it is provided that the path of releasing of described electric capacity C1.
5. on-off circuit as claimed in claim 4, it is characterised in that described leadage circuit includes:
Diode D2, the anode of described diode D2 is as described first end of described leadage circuit, described
The negative electrode of diode D2 is as described second end of described leadage circuit；
One end of resistance R2, described resistance R2 connects the negative electrode of described diode D2, described resistance R2
The other end connect described low pressure bear pin.
6. a high voltage electric equipment, including an on-off circuit, it is characterised in that described on-off circuit includes
Switch SW1, resistance R1, electric capacity C1, described on-off circuit also includes:
Pretreatment circuit, the input of described pretreatment circuit connects a low positive pressure by described switch SW1 and draws
Foot, described pretreatment circuit, for when described switch SW1 closes, inputs via described low positive pressure pin
Low tension carry out after rectifying and wave-filtering and voltage stabilizing process, exporting a unidirectional current；
Timer chip, the triggering pin of described timer chip connects described pre-place by described resistance R1
The outfan of reason circuit, and bear pin by described electric capacity C1 connection low pressure, described timer chip is used for
When the charging voltage at described electric capacity C1 two ends reaches internal reference voltage, time delay exports a high level；
Relay, the coil of described relay is connected to the output pin of described timer chip and described low pressure
Between negative pin, the switch of described relay is connected between high voltage power supply and high voltage electric equipment, described in continue
The switch of electrical equipment is for the Guan Bi when described timer chip exports described high level, to connect described high-tension electricity
Source.
7. high voltage electric equipment as claimed in claim 6, it is characterised in that described pretreatment circuit includes:
Diode D1, the anode of described diode D1 as the input of described pretreatment circuit, described two
The negative electrode of pole pipe D1 is as the outfan of described pretreatment circuit；
One end of electric capacity C1, described electric capacity C1 connects the negative electrode of described diode D1, described electric capacity C1
The other end connect described low pressure bear pin；
The negative electrode of stabilivolt VD1, described stabilivolt VD1 connects the negative electrode of described diode D1, described surely
The anode of pressure pipe VD1 connects described low pressure and bears pin.
8. high voltage electric equipment as claimed in claim 6, it is characterised in that described timer chip is
555 timer chips.
9. the high voltage electric equipment as described in any one of claim 6 to 8, it is characterised in that described switch
Circuit also includes:
Leadage circuit, the first end of described leadage circuit connects the triggering pin of described timer chip, described
The earth terminal ground connection of leadage circuit, the second end of described leadage circuit connects the outfan of described pretreatment circuit,
Described leadage circuit is for when described switch SW1 disconnects, it is provided that the path of releasing of described electric capacity C1.
10. high voltage electric equipment as claimed in claim 9, it is characterised in that described leadage circuit includes:
Diode D2, the anode of described diode D2 is as described first end of described leadage circuit, described
The negative electrode of diode D2 is as described second end of described leadage circuit；
One end of resistance R2, described resistance R2 connects the negative electrode of described diode D2, described resistance R2
The other end connect described low pressure bear pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310073570.9A CN104035343B (en) | 2013-03-08 | 2013-03-08 | A kind of high voltage electric equipment and on-off circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310073570.9A CN104035343B (en) | 2013-03-08 | 2013-03-08 | A kind of high voltage electric equipment and on-off circuit thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104035343A CN104035343A (en) | 2014-09-10 |
| CN104035343B true CN104035343B (en) | 2016-12-28 |
Family
ID=51466155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310073570.9A Expired - Fee Related CN104035343B (en) | 2013-03-08 | 2013-03-08 | A kind of high voltage electric equipment and on-off circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104035343B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1022716C2 (en) * | 2003-02-17 | 2004-08-23 | A C Pasma Holding B V | Switching system, method, and operating device for switching lighting fixtures on and off. |
| CN1246874C (en) * | 2003-04-30 | 2006-03-22 | 王稳忠 | Microprocessor controlled AC switch circuit |
| CN101299604B (en) * | 2008-06-18 | 2011-03-30 | 天津精通控制仪表技术有限公司 | Switch circuit |
| US8115457B2 (en) * | 2009-07-31 | 2012-02-14 | Power Integrations, Inc. | Method and apparatus for implementing a power converter input terminal voltage discharge circuit |
| CN201985830U (en) * | 2010-12-21 | 2011-09-21 | 张献忠 | Switch control circuit |
-
2013
- 2013-03-08 CN CN201310073570.9A patent/CN104035343B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104035343A (en) | 2014-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102021863B1 (en) | Direct Current Circuit Breaker and Method Using The Same | |
| CN106053999B (en) | A kind of power-fail detection circuit and its application for wireless single firewire switch | |
| CN203261003U (en) | Ground fault protection device | |
| CN202424257U (en) | Battery charging circuit | |
| CN204614744U (en) | A kind of outdoor intelligent demarcation circuit breaker assembly | |
| CN103956721A (en) | Battery explosion-proof circuit and battery charging circuit | |
| CN104035343B (en) | A kind of high voltage electric equipment and on-off circuit thereof | |
| CN204858537U (en) | Battery discharge short -circuit protection circuit | |
| CN208691000U (en) | A kind of switching circuit for charged pool function device | |
| CN203553882U (en) | Transformer low-voltage tripping automatic reclosing device | |
| CN206975126U (en) | A kind of high-voltage large-capacity power capacitor short-circuit test device | |
| CN103269057A (en) | Ground fault protection device | |
| CN203826946U (en) | Cell explosionproof circuit and cell charging circuit | |
| CN204441857U (en) | A kind of earth leakage protective device | |
| CN204633617U (en) | The surge-prevention soft starting circuit of Switching Power Supply | |
| CN207617523U (en) | A kind of anti-ignition device of electric vehicle | |
| CN206962505U (en) | Anti- reverse battery protection circuit and charger | |
| CN202167838U (en) | Protective device of medium voltage breaker switching-on coil | |
| CN202260427U (en) | Protection circuit, switchgear using same, and power supply distribution system | |
| CN205610209U (en) | Mains power supply's surge protection circuit | |
| RU2010129707A (en) | METHOD FOR PROHIBITING AUTOMATIC REPEATED TURNING ON A SECTIONAL CIRCUIT BREAKER WHEN FAILED TO TURN OFF THE SWITCH OF THE NETWORK POINT OF THE AUTOMATIC RESERVE TURNING ONLY | |
| CN206790151U (en) | A kind of protection circuit of new raising electric mosquito flap security | |
| CN207410023U (en) | A kind of not power-off leakage non-electricity protector | |
| CN204333889U (en) | A kind of earth leakage protective device | |
| CN203800574U (en) | Breaker switching-off and switching-on coil protection apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161228 Termination date: 20190308 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |