CN104315333B - The control circuit of GIS device device special for inflation - Google Patents
The control circuit of GIS device device special for inflation Download PDFInfo
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- CN104315333B CN104315333B CN201410546969.9A CN201410546969A CN104315333B CN 104315333 B CN104315333 B CN 104315333B CN 201410546969 A CN201410546969 A CN 201410546969A CN 104315333 B CN104315333 B CN 104315333B
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Abstract
A kind of control circuit of GIS device device special for inflation, it comprises power supply and drops into tutorial light L1, inflator drops into tutorial light L2, inflation run indicator L3 and inflation stop tutorial light L4, electromagnetic valve switch DCF-Y1, there is the pressure gauge with electric contact YJ of break contact switch YJ1 and normal opened contact switch YJ2, there is the diverter switch of two-layer contact, trigger switch SB1 and SB2 and reset switch SB3, there is the first auxiliary reclay 1ZJ of normal opened contact switch 1ZJ1 and break contact switch 1ZJ2, there is the second auxiliary reclay 2ZJ of break contact switch 2ZJ1, there is the 3rd auxiliary reclay 3ZJ of normal opened contact switch 3ZJ1 and normal opened contact switch 3ZJ2, there is normal opened contact switch 4ZJ1, the 4th auxiliary reclay 4ZJ of normal opened contact switch 4ZJ2 and break contact switch 4ZJ3, there is raising operating security, reliability, the advantage of sensitivity and simple operation, avoid the unsafe factor because manual monitoring gas replenishment process may occur, increase work efficiency, reduce inflation number of work, increase economic efficiency.
Description
Technical field
The present invention relates to the supplementary equipment field used in electric power system, specifically a kind of control circuit of GIS device device special for inflation.
Background technique
Load-center substation domestic at present or say that larger electric substation's high voltage distribution installation mainly adopts GIS device (abbreviation of GASINSULATEDSWITHGEAR, totally enclosed type combined electrical apparatus).In most cases the air chamber of GIS device is interior fills SF
6gas is as insulating medium.
Because the combined electric appliance equipments such as GIS need a large amount of SF
6gas, and be Assembling, on-the-spot inflation, so need to be loaded with SF
6the steel cylinder of gas is in moved between positions, and the GIS device floor space simultaneously due to each power transformation engineering is large, simultaneously nearly 200 to 400 of air chamber quantity, therefore fills SF
6the task of gas is heavy.And, in whole GIS device, the SF required for diverse location
6gas pressure intensity is inconsistent, is generally divided into 0.42MPa and 0.62MPa, adopts current artificial inflating method, by human eye observation's pressure gauge monitoring gas replenishment process, unreliable, dangerous, efficiency is low, and it is many to inflate the staff that need take.
Summary of the invention
The object of the present invention is to provide one can realize whole-process automatic control gas replenishment process, there is the advantages such as safe, reliable, sensitive and convenient operation, the unsafe factor because manual monitoring gas replenishment process may occur (even occurring personal injury or device damage) can be avoided, the control circuit of the GIS device device special for inflation of increase work efficiency (people can be responsible for multiple operation point).
The present invention solves the technological scheme that its technical problem takes: a kind of control circuit of GIS device device special for inflation, and it comprises,
One is dropped into K switch 1, and it contains two synchronous contacts;
Four tutorial light: be respectively power supply and drop into tutorial light L1, inflator drops into tutorial light L2, inflation tutorial light L3, inflation stops tutorial light L4;
An electromagnetic valve switch DCF-Y1;
A pressure gauge with electric contact YJ, it comprises two contact switches, is respectively break contact switch YJ1 and normal opened contact switch YJ2;
A diverter switch, it contains two-layer contact, is respectively first layer contact QH1-1, second layer contact QH1-2;
The reset switch SB3 of two trigger switch SB1 and SB2 and trigger types;
Four auxiliary reclays are respectively:
First auxiliary reclay 1ZJ, it contains two contact switches, is normal opened contact switch 1ZJ1, break contact switch 1ZJ2;
Second auxiliary reclay 2ZJ, it contains a contact switch, is break contact switch 2ZJ1;
3rd auxiliary reclay 3ZJ, it contains two contact switches, is normal opened contact switch 3ZJ1, normal opened contact switch 3ZJ2;
4th auxiliary reclay 4ZJ, it contains three contact switches, is normal opened contact switch 4ZJ1, normal opened contact switch 4ZJ2, break contact switch 4ZJ3;
The two ends that described power supply drops into tutorial light L1 and described inflator input tutorial light L2 are connected in parallel between two main circuits; Two synchronous contacts of described input K switch 1 are separately positioned on two main circuits, and two synchronous contacts are arranged on the two ends that described inflator drops into tutorial light L2;
Described reset switch SB3 is normally closed switch, and it is arranged on a main circuit;
Two described trigger switch SB1 and SB2 are normal open switch;
Normal opened contact switch 3ZJ1 in the coil of the first described auxiliary reclay 1ZJ and described 3rd auxiliary reclay 3ZJ is arranged in series between two main circuits;
Normal opened contact switch 3ZJ2 in the break contact switch YJ1 of described pressure gauge with electric contact, described 3rd auxiliary reclay 3ZJ, the coil of described 3rd auxiliary reclay 3ZJ are arranged in series from left to right successively between two main circuits;
The end that is connected into of the first layer contact QH1-1 of described diverter switch connects left side main circuit, and switch terminal is containing two contacts, contacts one end of described trigger switch SB1 in one of them contact, contacts one end of described trigger switch SB2 in another contact;
The other end of described trigger switch SB1 is connected between the coil of described normal opened contact switch 3ZJ2 and described 3rd auxiliary reclay 3ZJ;
The coil of the normal opened contact switch 4ZJ1 of described 4th auxiliary reclay 4ZJ, the break contact switch 2ZJ1 of described second auxiliary reclay 2ZJ, described 4th auxiliary reclay 4ZJ is arranged in series from left to right successively between two main circuits;
The other end of described trigger switch SB2 is connected between the coil of described break contact switch 2ZJ1 and described 4th auxiliary reclay 4ZJ;
The normal opened contact switch YJ2 of described pressure gauge with electric contact YJ and the coils connected in series of described second auxiliary reclay 2ZJ are arranged between two main circuits;
The normal opened contact switch 1ZJ1 of described first auxiliary reclay 1ZJ and the coils connected in series of described electromagnetic valve switch DCF-Y1 are arranged between two main circuits;
Normal opened contact switch 4ZJ2 and the described inflation tutorial light L3 of described 4th auxiliary reclay 4ZJ are arranged in series between two main circuits;
The coil left end of described electromagnetic valve switch DCF-Y1 is connected by electric wire with described inflation tutorial light L3 left end;
The end that is connected into of the second layer contact QH1-2 of described diverter switch connects left side main circuit, switch terminal is containing two contacts, one end of break contact switch 1ZJ2 in the described first auxiliary reclay 1ZJ of one of them contact series winding, one end of break contact switch 4ZJ3 in the described 4th auxiliary reclay 4ZJ of another contact series winding;
The other end and the other end of described break contact switch 4ZJ3 of described break contact switch 1ZJ2 described inflation of jointly connecting stops tutorial light L4 to right side main circuit.
Further, it also comprises a voice guard FM, and this voice guard FM and described inflation stop tutorial light L4 in parallel.
The invention has the beneficial effects as follows: it has the advantage improving operating security, reliability, sensitivity and simple operation, the unsafe factor because manual monitoring gas replenishment process may occur can be avoided, increase work efficiency, reduce the vacancy of inflation staff, increase economic efficiency.
Accompanying drawing explanation
Fig. 1 is control circuit figure of the present invention;
Fig. 2 is the schematic diagram that the present invention connects plenum chamber and gas cylinder;
Embodiment
For ease of understanding technological scheme of the present invention, below in conjunction with accompanying drawing, wherein involved technology contents is described further.
In the description of this invention, it should be noted that, term "left", "right", " on ", the orientation of the instruction such as D score or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; ; Can be mechanical connection, also can be electrical connection, can be directly to be connected, and also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
As shown in Figure 1,
A control circuit for GIS device device special for inflation, it comprises:
One is dropped into K switch 1, and it contains two synchronous contacts;
Four tutorial light: be respectively power supply and drop into tutorial light L1, inflator drops into tutorial light L2, inflation tutorial light L3, inflation stops tutorial light L4;
An electromagnetic valve switch DCF-Y1, opens during its energising, closed during power-off;
A pressure gauge with electric contact YJ, it comprises two contact switches, is respectively break contact switch YJ1 and normal opened contact switch YJ2;
A diverter switch, it contains two-layer contact, is respectively first layer contact QH1-1, second layer contact QH1-2;
The reset switch SB3 of two trigger switch SB1 and SB2 and trigger types;
A voice guard FM, as buzzer siren; And
Four auxiliary reclays are respectively:
First auxiliary reclay 1ZJ, it contains two contact switches, is normal opened contact switch 1ZJ1, break contact switch 1ZJ2;
Second auxiliary reclay 2ZJ, it contains a contact switch, is break contact switch 2ZJ1;
3rd auxiliary reclay 3ZJ, it contains two contact switches, is normal opened contact switch 3ZJ1, normal opened contact switch 3ZJ2;
4th auxiliary reclay 4ZJ, it contains three contact switches, is normal opened contact switch 4ZJ1, normal opened contact switch 4ZJ2, break contact switch 4ZJ3.
The two ends that described power supply drops into tutorial light L1 and described inflator input tutorial light L2 are connected in parallel between two main circuits; Two synchronous contacts of described input K switch 1 are separately positioned on two main circuits, and two synchronous contacts are arranged on the two ends that described inflator drops into tutorial light L2.After by this control circuit access power supply, described power supply drops into tutorial light L1 energising, shown in red, and after making described input K switch 1 closed, described inflator drops into tutorial light L2 energising, shown in green.
Described reset switch SB3 is normally closed switch, and it is arranged on a main circuit in left side.Press the moment of reset switch SB3, be in the auxiliary reclay dead electricity under "on" position, the break contact switch of each auxiliary reclay closes, and normal opened contact switch disconnects, the state before circuit can be made to return to energising.
Two described trigger switch SB1 and SB2 are normal open switch.
Normal opened contact switch 3ZJ1 in the coil of the first described auxiliary reclay 1ZJ and described 3rd auxiliary reclay 3ZJ is arranged in series between the main circuit of left and right two.
Normal opened contact switch 3ZJ2 in the break contact switch YJ1 of described pressure gauge with electric contact YJ, described 3rd auxiliary reclay 3ZJ, the coil of described 3rd auxiliary reclay 3ZJ are arranged in series from left to right successively between the main circuit of left and right two.
The end that is connected into of the first layer contact QH1-1 of described diverter switch connects left side main circuit, and switch terminal is containing two contacts, contacts one end of described trigger switch SB1 in one of them contact, contacts one end of described trigger switch SB2 in another contact.
The other end of described trigger switch SB1 is connected between the coil of described normal opened contact switch 3ZJ2 and described 3rd auxiliary reclay 3ZJ.
The coil of the normal opened contact switch 4ZJ1 of described 4th auxiliary reclay 4ZJ, the break contact switch 2ZJ1 of described second auxiliary reclay 2ZJ, described 4th auxiliary reclay 4ZJ is arranged in series from left to right successively between the main circuit of left and right two.
The other end of described trigger switch SB2 is connected between the coil of described break contact switch 2ZJ1 and described 4th auxiliary reclay 4ZJ.
The normal opened contact switch YJ2 of described pressure gauge with electric contact and the coils connected in series of described second auxiliary reclay 2ZJ are arranged between two main circuits of left and right.
The normal opened contact switch 1ZJ1 of described first auxiliary reclay 1ZJ and the coils connected in series of described electromagnetic valve switch DCF-Y1 are arranged between two main circuits of left and right.
Normal opened contact switch 4ZJ2 and the described inflation tutorial light L3 of described 4th auxiliary reclay 4ZJ are arranged in series between the main circuit of left and right two.
The coil left end of described electromagnetic valve switch DCF-Y1 is connected by electric wire with described inflation tutorial light L3 left end, and namely the coil of described electromagnetic valve switch DCF-Y1 is in parallel with described inflation tutorial light L3.
The end that is connected into of the second layer contact QH1-2 of described diverter switch connects left side main circuit, switch terminal is containing two contacts, one end of break contact switch 1ZJ2 in the described first auxiliary reclay 1ZJ of one of them contact series winding, one end of break contact switch 4ZJ3 in the described 4th auxiliary reclay 4ZJ of another contact series winding.
The other end and the other end of described break contact switch 4ZJ3 of described break contact switch 1ZJ2 described inflation of jointly connecting stops tutorial light L4 to right side main circuit, and described voice guard FM stops tutorial light L4 in parallel with described inflation simultaneously.
As shown in Figure 2, GIS device device special for inflation is integrated in casing, comprises power supply (~ 220v), electromagnetic valve switch DCF-Y1, pressure gauge with electric contact YJ, rapid pipe joint and control circuit etc. involved in the present invention.The valve body of electromagnetic valve switch DCF-Y1 is arranged on air inlet pipeline, is communicated with, otherwise is closed by air inlet pipeline under off-position under "on" position by air inlet pipeline.Described pressure gauge with electric contact YJ is communicated with GIS device SF6 air chamber, be used for detecting the pressure in GIS device SF6 air chamber, according to actual conditions, suppose the setting valve presetting described pressure gauge with electric contact YJ, as being set as 0.42MPa and 0.62MPa two setting valves, and make the setting valve of 0.42MPa corresponding with the break contact switch YJ1 of described pressure gauge with electric contact YJ, make the setting valve of 0.62MPa corresponding with the normal opened contact switch YJ2 of described pressure gauge with electric contact YJ.When adjusting to 0.42MPa pattern by described diverter switch (under supposing this state, all each self-corresponding upper contact is in succession with it for the first layer contact QH1-1 of described diverter switch and second layer contact QH1-2), to the SF6 chamber inflated of GIS device, when plenum interior pressure reaches 0.42MPa, the break contact switch YJ1 of described pressure gauge with electric contact YJ disconnects automatically; In like manner, when described diverter switch being adjusted to 0.62MPa pattern (under supposing this state, all each self-corresponding lower contact is in succession with it for the first layer contact QH1-1 of described diverter switch and second layer contact QH1-2), to the SF6 chamber inflated of GIS device, when plenum interior pressure reaches 0.62MPa, the normal opened contact switch YJ2 of described pressure gauge with electric contact YJ closes automatically.
Control procedure of the present invention is:
First by this control circuit access power supply, described power supply drops into tutorial light L1 energising, shown in red.Then closed described input K switch 1, now described inflator drops into tutorial light L2 energising, shown in green.Each auxiliary reclay, pressure gauge with electric contact YJ, electromagnetic valve switch DCF-Y1 are original state.
(1) upwards reverse described diverter switch, all each self-corresponding upper contact is in succession (now for 0.42MPa inflated condition) with it to make its first layer contact QH1-1 and second layer contact QH1-2:
Press the moment of described trigger switch SB1, the coil electricity of described 3rd auxiliary reclay 3ZJ, and make its normal opened contact switch 3ZJ1, normal opened contact switch 3ZJ2 closed;
Described normal opened contact switch 3ZJ2 closes, and makes the coil of described 3rd auxiliary reclay 3ZJ be in lasting "on" position; Simultaneously, described normal opened contact switch 3ZJ1 closes, the coil of described first auxiliary reclay 1ZJ is made to continue energising, the normal opened contact switch 1ZJ1 of described first auxiliary reclay 1ZJ closes, (valve body of electromagnetic valve switch DCF-Y1 is opened, and is communicated with loading line for the coil of the described electromagnetic valve switch DCF-Y1 be in parallel and the energising of inflation tutorial light L3 put in circuit; Inflation tutorial light L3 display is green), the break contact switch 1ZJ2 of described first auxiliary reclay 1ZJ disconnects, and described inflation stops tutorial light L4, voice guard FM is all in off-position;
At the SF of GIS device
6when in air chamber, pressure reaches 0.42MPa, the break contact switch YJ1 of described pressure gauge with electric contact YJ disconnects automatically, makes the coil blackout of described 3rd auxiliary reclay 3ZJ, and its normal opened contact switch 3ZJ1, normal opened contact switch 3ZJ2 recover off state;
After described normal opened contact switch 3ZJ1 disconnects, make the coil blackout of described first auxiliary reclay 1ZJ, the normal opened contact switch 1ZJ1 of described first auxiliary reclay 1ZJ recovers off state, and (valve body of electromagnetic valve switch DCF-Y1 closes to make the coil of electromagnetic valve switch DCF-Y1 and inflation tutorial light L3 power-off; Inflation tutorial light L3 dead electricity), break contact switch 1ZJ2 recovers closed state, and described inflation stops tutorial light L4 energising, and shown in red, voice guard FM powers alarm;
(2) downwards reverse described diverter switch, all each self-corresponding lower contact is in succession (being now 0.62MPa inflated condition) with it to make its first layer contact QH1-1 and second layer contact QH1-2:
Press the moment of described trigger switch SB2, the coil electricity of described 4th auxiliary reclay 4ZJ, and its normal opened contact switch 4ZJ1 and normal opened contact switch 4ZJ2 is closed, break contact switch 4ZJ3 disconnects;
Described normal opened contact switch 4ZJ1 closes, and makes the coil of described 4th auxiliary reclay 4ZJ enter lasting "on" position; Meanwhile, described normal opened contact switch 4ZJ2 closes, by the coil of the described electromagnetic valve switch DCF-Y1 be in parallel and the energising of inflation tutorial light L3 put in circuit; Described break contact switch 4ZJ3 disconnects, and makes that described inflation stops tutorial light L4, voice guard FM is all in off-position;
At the SF of GIS device
6when in air chamber, pressure reaches 0.62MPa, the normal opened contact switch YJ2 of described pressure gauge with electric contact YJ closes automatically, makes the coil electricity of described second auxiliary reclay 2ZJ, and its break contact switch 2ZJ1 disconnects;
The disconnection of described break contact switch 2ZJ1 makes the coil losing electricity of described 4th auxiliary reclay 4ZJ; Described normal opened contact switch 4ZJ2 recovers off state, described in the coil of electromagnetic valve switch DCF-Y1 that is in parallel and inflation tutorial light L3 dead electricity; Described break contact switch 4ZJ3 recovers closed state, makes described inflation stopping tutorial light L4, voice guard FM is all energized.
Described inflation stops tutorial light L4 energising display red, voice guard FM powers alarm, staff is pointed out to shift out charger (it should be noted that, make described inflation stop tutorial light L4 and described voice guard FM can select a use) in time.By the present invention, no longer need staff's special observed pressure table numerical value, control aeration quantity, when avoiding inflation pressure excessive, because adjustment air pressure is the environmental pollution caused in unnecessary air release to air and SF
6the waste of gas, realizes environmental benefit and economic benefit.Because the present invention can automatically cut off gas replenishment process and report to the police, on the one hand, a staff can observe multiple inflator, and saved labour force, on the other hand, guarantee the Security of ventilating control, reliability, sensitivity and operability easily, avoid the unsafe factor because manual monitoring gas replenishment process may occur (even occurring personal injury or device damage) completely.Can increase work efficiency (people can be responsible for multiple operation point) simultaneously, increase economic efficiency.
Except the technical characteristics described in specification, be the known technology of those skilled in the art.
Claims (2)
1. a control circuit for GIS device device special for inflation, is characterized in that: comprise,
One is dropped into K switch 1, and it contains two synchronous contacts;
Four tutorial light: be respectively power supply and drop into tutorial light L1, inflator drops into tutorial light L2, inflation tutorial light L3, inflation stops tutorial light L4;
An electromagnetic valve switch DCF-Y1;
A pressure gauge with electric contact YJ, it comprises two contact switches, is respectively break contact switch YJ1 and normal opened contact switch YJ2;
A diverter switch, it contains two-layer contact, is respectively first layer contact QH1-1, second layer contact QH1-2;
The reset switch SB3 of two trigger switch SB1 and SB2 and trigger types;
Four auxiliary reclays are respectively:
First auxiliary reclay 1ZJ, it contains two contact switches, is normal opened contact switch 1ZJ1, break contact switch 1ZJ2;
Second auxiliary reclay 2ZJ, it contains a contact switch, is break contact switch 2ZJ1;
3rd auxiliary reclay 3ZJ, it contains two contact switches, is normal opened contact switch 3ZJ1, normal opened contact switch 3ZJ2;
4th auxiliary reclay 4ZJ, it contains three contact switches, is normal opened contact switch 4ZJ1, normal opened contact switch 4ZJ2, break contact switch 4ZJ3;
The two ends that described power supply drops into tutorial light L1 and described inflator input tutorial light L2 are connected in parallel between two main circuits; Two synchronous contacts of described input K switch 1 are separately positioned on two main circuits, and two synchronous contacts are arranged on the two ends that described inflator drops into tutorial light L2;
Described reset switch SB3 is normally closed switch, and it is arranged on a main circuit;
Two described trigger switch SB1 and SB2 are normal open switch;
Normal opened contact switch 3ZJ1 in the coil of the first described auxiliary reclay 1ZJ and described 3rd auxiliary reclay 3ZJ is arranged in series between two main circuits;
Normal opened contact switch 3ZJ2 in the break contact switch YJ1 of described pressure gauge with electric contact, described 3rd auxiliary reclay 3ZJ, the coil of described 3rd auxiliary reclay 3ZJ are arranged in series from left to right successively between two main circuits;
The end that is connected into of the first layer contact QH1-1 of described diverter switch connects left side main circuit, and switch terminal is containing two contacts, contacts one end of described trigger switch SB1 in one of them contact, contacts one end of described trigger switch SB2 in another contact;
The other end of described trigger switch SB1 is connected between the coil of described normal opened contact switch 3ZJ2 and described 3rd auxiliary reclay 3ZJ;
The coil of the normal opened contact switch 4ZJ1 of described 4th auxiliary reclay 4ZJ, the break contact switch 2ZJ1 of described second auxiliary reclay 2ZJ, described 4th auxiliary reclay 4ZJ is arranged in series from left to right successively between two main circuits;
The other end of described trigger switch SB2 is connected between the coil of described break contact switch 2ZJ1 and described 4th auxiliary reclay 4ZJ;
The normal opened contact switch YJ2 of described pressure gauge with electric contact YJ and the coils connected in series of described second auxiliary reclay 2ZJ are arranged between two main circuits;
The normal opened contact switch 1ZJ1 of described first auxiliary reclay 1ZJ and the coils connected in series of described electromagnetic valve switch DCF-Y1 are arranged between two main circuits;
Normal opened contact switch 4ZJ2 and the described inflation tutorial light L3 of described 4th auxiliary reclay 4ZJ are arranged in series between two main circuits;
The coil left end of described electromagnetic valve switch DCF-Y1 is connected by electric wire with described inflation tutorial light L3 left end;
The end that is connected into of the second layer contact QH1-2 of described diverter switch connects left side main circuit, switch terminal is containing two contacts, one end of break contact switch 1ZJ2 in the described first auxiliary reclay 1ZJ of one of them contact series winding, one end of break contact switch 4ZJ3 in the described 4th auxiliary reclay 4ZJ of another contact series winding;
The other end and the other end of described break contact switch 4ZJ3 of described break contact switch 1ZJ2 described inflation of jointly connecting stops tutorial light L4 to right side main circuit.
2. the control circuit of GIS device device special for inflation according to claim 1, is characterized in that: it also comprises a voice guard FM, and this voice guard FM and described inflation stop tutorial light L4 in parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410546969.9A CN104315333B (en) | 2014-10-16 | 2014-10-16 | The control circuit of GIS device device special for inflation |
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| CN201410546969.9A CN104315333B (en) | 2014-10-16 | 2014-10-16 | The control circuit of GIS device device special for inflation |
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| CN104315333B true CN104315333B (en) | 2016-03-16 |
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| KR100764109B1 (en) * | 2007-03-16 | 2007-10-05 | 우성진공기술(주) | Sf6-gas liquefaction device |
| CN201902823U (en) * | 2010-12-09 | 2011-07-20 | 河南省电力公司三门峡供电公司 | SF6 gas combined charging and discharging device |
| JP5875144B2 (en) * | 2011-09-05 | 2016-03-02 | 矢崎総業株式会社 | Fuel filling device and fuel filling system |
| CN203445439U (en) * | 2013-08-26 | 2014-02-19 | 西安北鱼智能科技有限公司 | Combined interlock relay device |
| CN204141230U (en) * | 2014-10-16 | 2015-02-04 | 山东送变电工程公司 | The control circuit of GIS device device special for inflation |
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