CN106608204B - Electric discharge device - Google Patents

Electric discharge device Download PDF

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Publication number
CN106608204B
CN106608204B CN201510707835.5A CN201510707835A CN106608204B CN 106608204 B CN106608204 B CN 106608204B CN 201510707835 A CN201510707835 A CN 201510707835A CN 106608204 B CN106608204 B CN 106608204B
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CN
China
Prior art keywords
voltage
relay
discharge
electric discharge
circuit
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Active
Application number
CN201510707835.5A
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Chinese (zh)
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CN106608204A (en
Inventor
许金友
吴天音
曾谷元
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Zhuhai Unitech Power Technology Co Ltd
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Zhuhai Unitech Power Technology Co Ltd
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Priority to CN201510707835.5A priority Critical patent/CN106608204B/en
Publication of CN106608204A publication Critical patent/CN106608204A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60MPOWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M3/00Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage

Abstract

The present invention provides a kind of electric discharge device, including high-voltage relay GJ, discharge resistance R and control unit;The tip side discharged in series resistance R of high-voltage relay GJ forms high voltage discharge circuit, one end of the high voltage discharge circuit is configured to be electrically connected to contact net or conductor rail, the other end of the high voltage discharge circuit is configured to be electrically connected to return current rail, and the coil of high-voltage relay GJ connects to form control circuit with control unit.Electric discharge device of the invention, using the combination of high-voltage relay and discharge resistance, safe discharge operation can be realized in the case where contact net or conductor rail electrical verification are " having electricity ", solve security hidden trouble present in the operation of railway traffic contact network (or conductor rail) ground connection.

Description

Electric discharge device
Technical field
The present invention relates to City Rail Transit System field more particularly to the electric discharge devices of a kind of contact net or conductor rail.
Background technique
Urban track traffic generally uses direct current 750V or 1500V contact net (or conductor rail) to power.
When contact net (or conductor rail) and its peripheral equipment carry out repair and maintenance after having a power failure, in order to guarantee operating personnel's person Safety, needs to take the safety measure of " ground connection ", is shorted contact net and return current rail with ground line or grounding switch, prevents suddenly Incoming call causes personal injury.If accidentally contact net and return current rail short circuit with normal working voltage will form short circuit, caused Contact net equipment damage, and jeopardize operator's personal safety.To avoid short circuit, contact net power failure operation need to be implemented power failure, Electrical verification, electric discharge, the operating process of ground connection.
After contact net has a power failure, residual voltage is still had on contact net.When residual voltage is higher, electrical verification result can " be had Electricity ", in this case, site operation personnel is difficult to judge on contact net to be residual voltage or normal voltage.Contact net insulation Horizontal higher, residual voltage is higher, and residual voltage decaying is slower, to become " no electricity " until electrical verification result, may wait tens Minute or longer time.
During contact net and its peripheral equipment interruption maintenance are typically scheduled at the stoppage in transit of subway night, the activity duration only has several Hour, the process that " no electricity " is decayed to avoid contact with net residual voltage expends the too many time, and operator can run shape according to scene Condition is directly shorted between contact net and return current rail with ground line in the case where artificial judgment contact network source is already off Electric discharge executes ground connection operation later.This operation has security risk, rashly will be with normal work when artificial judgment is made mistakes The contact net of voltage will cause short circuit to return current rail short circuit, cause equipment damage, and jeopardize operator's personal safety.
Summary of the invention
In view of the status of the prior art, the purpose of the present invention is to provide a kind of electric discharge device, using high-voltage relay and The combination of discharge resistance can realize safe discharge operation, solve in the case where contact net or conductor rail electrical verification are " having electricity " Determined railway traffic contact network (or conductor rail) ground connection operation present in security hidden trouble.To achieve the above object, this hair Bright technical solution is as follows:
A kind of electric discharge device, comprising:
High-voltage relay GJ, discharge resistance R and control unit;
The tip side series connection discharge resistance R of the high-voltage relay GJ forms high voltage discharge circuit, and the height presses One end of circuit is configured to be electrically connected to contact net or conductor rail, and the other end of the high voltage discharge circuit is configured to electricity It is connected to return current rail, the coil of the high-voltage relay GJ connects to form control circuit with the control unit;
The electric discharge device further includes signal relay XJ in one of the embodiments,;
The coils from parallel connection of coils of the coil of the signal relay XJ and the high-voltage relay GJ are arranged in the control circuit In, the tip side of the signal relay XJ is connected in discharge condition feed circuit.
The electric discharge device further includes insulation shell in one of the embodiments, the high-voltage relay GJ, described Discharge resistance R and the signal relay XJ are encapsulated in the insulation shell;It the interface of the control circuit and described puts The contact of electricity condition feed circuit is all made of connecting terminal extraction, and the high voltage discharge circuit is drawn using high-voltage line.
Be additionally provided with indicator light in the discharge condition feed circuit in one of the embodiments, the indicator light with The coils from parallel connection of coils of the signal relay XJ.
The electric discharge device further includes temperature detect switch (TDS) RJ in one of the embodiments, the temperature detect switch (TDS) RJ and institute The coil for stating high-voltage relay GJ is arranged in series, and the temp probe of the temperature detect switch (TDS) RJ is arranged near the discharge resistance R.
The control unit is manual switch, remote control contact or automatic control contact in one of the embodiments,.
The beneficial effects of the present invention are:
Electric discharge device of the invention can be in contact net or conductor rail using the combination of high-voltage relay and discharge resistance In the case that electrical verification is " having electricity ", safe discharge operation is realized, solve railway traffic contact network (or conductor rail) ground connection behaviour Security hidden trouble present in work.If contact net or conductor rail voltage are residual voltage, electric discharge device can be by residual voltage Quick-discharging shortens the operating time;If contact net or conductor rail misplace electricity with normal working voltage, electric discharge device will not shape At short circuit.It can cooperate with direct current electricity-detection grounding device, realize remote control electrical verification, remote control electric discharge, remote control ground connection, discharge for contact net Operation provides safety, a distant place and controllable operational means on the spot.Provide a distant place and on the spot controllable manipulator Section, shortens ground connection working hour, can reserve the more time for site maintenance operations.It has filled up industry blank, has extensive Application space.Electric discharge device of the invention can also be used for the discharge operation before conventional ground wire hitching.
Detailed description of the invention
Fig. 1 is the circuit diagram of the electric discharge device of one embodiment of the invention.
Symbol description in figure:
DC+: electric discharge device controls positive pole
DC-: electric discharge device controls power cathode
GJ: high-voltage relay
XJ: signal relay
RJ: temperature detect switch (TDS)
R: discharge resistance
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right with reference to the accompanying drawings and embodiments Electric discharge device of the invention is further elaborated.It should be appreciated that specific embodiment described herein is only used for explaining The present invention is not intended to limit the present invention.
Referring to Fig.1, the electric discharge device of one embodiment of the invention, including high-voltage relay GJ, discharge resistance R and signal relay Device XJ.
The tip side discharged in series resistance R of high-voltage relay GJ forms high voltage discharge circuit 3, one end of high voltage discharge circuit It is configured to be electrically connected to contact net or conductor rail, the other end of high voltage discharge circuit is configured to be electrically connected to return current rail, high The coil of potential relay GJ connects to form control circuit 1 with control unit.
The coil of signal relay XJ and the coils from parallel connection of coils of high-voltage relay GJ are arranged in control circuit, signal relay The tip side of XJ is connected in discharge condition feed circuit 2.
Wherein, the control unit can be manual switch, remote control contact or automatic control contact.Discharge resistance R is high pressure Resistance.
High-voltage relay contact and high-tension resistive are composed in series high voltage discharge circuit, access contact net or conductor rail and reflux Between rail, by the on-off of high-voltage relay control high voltage discharge circuit, safety, controllable discharging function are realized.High-voltage relay By the external control unit starting contact control, the control unit can access remote control contact, also can access hand on the spot Dynamic discharge button contact, cooperates to related automatic control equipment, can also realize automatic discharging.
When the coil of control unit control high-voltage relay GJ connects electric discharge device control positive pole DC+ and electric discharge device When controlling power cathode DC-, the coil of high-voltage relay GJ and signal relay XJ are charged, and two relays act, electric discharge Device enters discharge condition;After electric discharge, control unit is by the coil blackout of high-voltage relay GJ, high-voltage relay GJ and letter Number equal power loss of relay XJ coil, two relays return, and electric discharge device exits discharge condition.
When high-voltage relay tip side (contact) is closed, discharge resistance is accessed between contact net or conductor rail and return current rail R forms high voltage discharge circuit, and the residual voltage of contact net or conductor rail is discharged.When high-voltage relay contact disconnects, by electrion Circuit disconnects.The tip side (contact) of high-voltage relay has enough resistance to voltage levels, operates normally in contact net or conductor rail Do not puncture under the conditions of voltage and abnormal overvoltage etc..If contact net or conductor rail have normal working voltage, electric discharge device When being activated electric discharge, because discharge resistance R has metering function, short circuit not will cause.
To monitor electric discharge device state, a signal relay, coil and high-voltage relay coils from parallel connection of coils, high pressure are set When the actuating of relay, signal relay is also moved at the same time, and issues discharging action signal.Signal relay XJ is able to reflect electric discharge dress Set action state.Preferably, be additionally provided with indicator light in the discharge condition feed circuit, the indicator light and the signal after The coils from parallel connection of coils of electric appliance XJ.Indicator light is set, can be intuitive to see the working condition of signal relay XJ, then judge height The working condition of potential relay GJ.Certainly, the indicator light can also be arranged in series with the coil of the signal relay XJ.
As an embodiment, electric discharge device further includes temperature detect switch (TDS) RJ, temperature detect switch (TDS) RJ and high-voltage relay GJ Coil be arranged in series, the temp probe of temperature detect switch (TDS) RJ is arranged near discharge resistance R.If contact net with normal voltage and When electric discharge device is in discharge condition for a long time, discharge resistance temperature rises, and when temperature reaches setting value, reflects discharge resistance The temperature detect switch (TDS) RJ of temperature is disconnected, and cuts off charge/discharge control circuit, high-voltage relay GJ and signal relay XJ are returned, by high pressure Relay tip cutoff high discharge circuit.
As an embodiment, electric discharge device further includes insulation shell, high-voltage relay GJ, discharge resistance R and letter Number relay XJ is encapsulated in the insulation shell.Insulation shell is preferably made of fire proofing.The interface of control circuit It is all made of connecting terminal with the contact of discharge condition feed circuit to draw, high voltage discharge circuit is drawn using high-voltage line.In figure, N1, n2 are electric discharge device control circuit contact, and n3, n4 are discharge condition feed circuit contact, and n5 is contact net high-voltage connection, are connect To contact net circuit, n6 return current rail high-voltage connection is connected to return current rail circuit.
The electric discharge device of above embodiments, using the combination of high-voltage relay, signal relay and discharge resistance, Ke Yi In the case that contact net or conductor rail electrical verification are " having electricity ", realize safe discharge operation, solve railway traffic contact network (or Conductor rail) it is grounded security hidden trouble present in operation.If contact net or conductor rail voltage are residual voltage, electric discharge device can To shorten the operating time for residual voltage quick-discharging;If contact net or conductor rail misplace electricity with normal working voltage, put Electric installation not will form short circuit.It can cooperate with direct current electricity-detection grounding device, realize remote control electrical verification, remote control electric discharge, remote control ground connection, A safe, distant place and on the spot controllable operational means are provided for contact net discharge operation, shortens ground connection working hour, is existing Field upkeep operation reserves the more time.It has filled up industry blank, has a wide range of applications space.Electric discharge device of the invention Discharge operation before can be used for conventional ground wire hitching.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (6)

1. a kind of electric discharge device characterized by comprising
High-voltage relay GJ, discharge resistance R and control unit;
The tip side series connection discharge resistance R of the high-voltage relay GJ forms high voltage discharge circuit, the electrion electricity The one end on road is configured to be electrically connected to contact net or conductor rail, and the other end of the high voltage discharge circuit is configured to be electrically connected To return current rail, the coil of the high-voltage relay GJ connects to form control circuit with the control unit;
The high-voltage relay GJ is by the external control unit starting contact control, when the control unit controls the high pressure When the coil of relay GJ is powered, the tip side closure of the high-voltage relay GJ, between contact net or conductor rail and return current rail The tip side for accessing the high-voltage relay GJ is connected the high voltage discharge circuit that the discharge resistance R formed, the electric discharge Device enters discharge condition;After electric discharge, the external control unit controls the coil blackout of the high-voltage relay GJ, institute It states high-voltage relay GJ power loss and returns, the electric discharge device exits discharge condition.
2. electric discharge device according to claim 1, it is characterised in that:
It further include signal relay XJ;
The coils from parallel connection of coils of the coil of the signal relay XJ and the high-voltage relay GJ are arranged in the control circuit, institute The tip side for stating signal relay XJ is connected in discharge condition feed circuit.
3. electric discharge device according to claim 2, it is characterised in that:
It further include insulation shell, the high-voltage relay GJ, the discharge resistance R and the signal relay XJ are encapsulated in institute It states in insulation shell;The contact of the interface of the control circuit and the discharge condition feed circuit is all made of connecting terminal and draws Out, the high voltage discharge circuit is drawn using high-voltage line.
4. electric discharge device according to claim 2, it is characterised in that:
It is additionally provided with indicator light in the discharge condition feed circuit, the coil of the indicator light and the signal relay XJ are simultaneously Connection.
5. electric discharge device according to claim 1-4, it is characterised in that:
It further include temperature detect switch (TDS) RJ, the coil of the temperature detect switch (TDS) RJ and the high-voltage relay GJ are arranged in series, the temperature control The temp probe of switch RJ is arranged near the discharge resistance R.
6. electric discharge device according to claim 1-4, it is characterised in that:
The control unit is manual switch, remote control contact or automatic control contact.
CN201510707835.5A 2015-10-26 2015-10-26 Electric discharge device Active CN106608204B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510707835.5A CN106608204B (en) 2015-10-26 2015-10-26 Electric discharge device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510707835.5A CN106608204B (en) 2015-10-26 2015-10-26 Electric discharge device

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Publication Number Publication Date
CN106608204A CN106608204A (en) 2017-05-03
CN106608204B true CN106608204B (en) 2019-04-02

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110927434A (en) * 2020-02-13 2020-03-27 天津美腾科技股份有限公司 Discharge test circuit and discharge test device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000082402A (en) * 1998-09-04 2000-03-21 Toshiba Corp Aging device for cathode-ray tube
CN2653837Y (en) * 2003-10-16 2004-11-03 陈仰波 Automatic quick discharge device for high voltage residual electricity
JP5064547B2 (en) * 2010-09-15 2012-10-31 豊田合成株式会社 Discharge device for vehicle
CN203352161U (en) * 2013-07-11 2013-12-18 曲阜嘉信电气有限公司 Special-purpose electric discharge device for frequency converter
CN204065371U (en) * 2014-09-03 2014-12-31 大唐林州热电有限责任公司 A kind of frequency converter Battery Discharging Device
CN204696683U (en) * 2015-06-18 2015-10-07 王晓博 Direct-current traction power supply contact line residual voltage restraining device

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