CN203287495U - Gas relay check meter - Google Patents
Gas relay check meter Download PDFInfo
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- CN203287495U CN203287495U CN2013203688531U CN201320368853U CN203287495U CN 203287495 U CN203287495 U CN 203287495U CN 2013203688531 U CN2013203688531 U CN 2013203688531U CN 201320368853 U CN201320368853 U CN 201320368853U CN 203287495 U CN203287495 U CN 203287495U
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Abstract
The utility model relates to the field of relays, especially a gas relay check meter. The main structure of the gas relay check meter is a U-shaped structure. The first branch of the U-shaped structure is an oil-return cavity, and the second branch of the U-shaped structure is a gas buffering cavity. A crossbeam at the middle of the U-shaped structure is provided with a gas relay. An oil pump and a pressure transmitter are respectively communicated with the gas buffering cavity via channels. An air compressor is connected with an air cylinder via a first channel which is provided with an electrical proportioning valve. The electrical proportioning valve is connected with the gas relay via a second channel. The first channel is provided with a heavy gas inlet valve. The second channel is provided with a light gas inlet valve. The gas buffering cavity is connected with the air cylinder via a third channel which is provided with a pulse valve. The gas relay is provided with a light-gas triggering signal leading-out clamp and a heavy-gas triggering signal leading-out clamp. The gas relay check meter is simple in integral structure, small in occupied area, and is capable of being used for field work.
Description
Technical field
The utility model relates to the relay field, in particular to the Buchholz relay check meter.
Background technology
Buchholz relay is called again gas relay, its testing apparatus comprises direct method of testing by the method that obtains flow speed value, this direct method of testing is that gas relay is arranged in oil circuit, and oil circuit caliber gentle body relay bore and the pipeline diameter that is arranged on transformer equate, be that gas relay is consistent at the internal and external flow field on testing apparatus with the flow field on being arranged on transformer, so the flow speed value of measuring is the exact value without any need for check and correction and correction.China gas relay manufacturing enterprise all adopts the testing apparatus of direct method of testing to do the test of dispatching from the factory, and many provinces, city electric company select the testing apparatus of direct method of testing to check and accept and the gas relay of adjusting.But the testing apparatus volume, the weight that are used for direct method of testing are excessive, are not suitable for the field condition operation.
The utility model content
The utility model purpose is to provide a kind of Buchholz relay check meter, can solve the problems of the technologies described above.
The utility model embodiment provides a kind of Buchholz relay check meter, comprising: agent structure, cylinder, air compressor, oil pump, pressure unit;
Described agent structure is " U " shape, and first of described " U " shape branches into oil back chamber, and second branches into the gas buffer chamber; The middle beam of described " U " shape is provided with Buchholz relay, and described oil pump and described pressure unit are communicated with described gas buffer chamber by passage respectively;
Described air compressor is connected by first passage with described cylinder, and described first passage arranges electric Proportion valve; The gas outlet of described electric Proportion valve is connected by second channel with described Buchholz relay, and described first passage is provided with heavy gas gas admittance valve; Described second channel is provided with light gas gas admittance valve, and described second channel is provided with the threeway spill valve between described light gas gas admittance valve and Buchholz relay;
Described gas buffer chamber is connected by third channel with described cylinder, and described third channel is provided with pulse valve;
Described gas buffer chamber is connected by four-way with described second channel, and described four-way is provided with three-way exhaust valve; Described three-way exhaust valve and described threeway spill valve form loop;
Described air compressor is connected by Five-channel with the oil-out of Buchholz relay, and described Five-channel is provided with two-position five-way valve;
Described Buchholz relay is respectively equipped with that light gas trigger pip is drawn folder and heavy gas trigger pip is drawn folder; Described pressure unit is provided with pressure unit AD fluid pressure contact.
Cylinder is connected by passage with Buchholz relay, and passage is provided with pulse valve, cylinder by pulse valve to the exhaust of gas buffer chamber, there will be air pulse, air pulse has formed pulse signal by Buchholz relay,, by detecting pulse signal, namely can complete heavy gas and detect; Cylinder enters gas to Buchholz relay,, by testing light Gas Signal, namely can complete light gas and detect, and when simultaneously, gives cylinder, gas buffer chamber and Buchholz relay pressurization, reads force value and time and namely can carry out airtight test.One-piece construction is simple, and floor area is little, can be used for field work.
Description of drawings
Fig. 1 shows the structure principle chart of the utility model embodiment 2;
Fig. 2 shows circuit structure connection diagram in the utility model embodiment 2;
Fig. 3 shows initialization schematic flow sheet in the utility model embodiment 2;
Fig. 4 shows the initial rear schematic flow sheet that triggers of heavy gas check in the utility model embodiment 2;
Fig. 5 shows in the utility model embodiment 2 and does not trigger schematic flow sheet after heavy gas check initially;
Fig. 6 shows light gas inspection process schematic diagram in the utility model embodiment 2;
Fig. 7 shows airtight inspection process schematic diagram in the utility model embodiment 2.
1. air compressor in figure, 2. gas-oil separation part, 401.AD electric Proportion valve real-time pressure contact, 4. electric Proportion valve, 501.DA electric Proportion valve controlled pressure contact, 103. light gas gas admittance valve, 104. heavy gas gas admittance valve, 8. throttling valve, 9. retaining valve, 105. pulse valve, 101. two-position five-way valve, 102. threeway spill valve, 201. three-way exhaust valve, 14. cylinder, 15. oil back chamber, 16. gas outlet, 17. oil pipe, 18. gas buffer chamber, 19. pneumatic ball valve, 20. Buchholz relay, 21. vent port, 22. draw-off pipe, 24. light gas trigger pip is drawn folder, 25. heavy gas trigger pip is drawn folder, 106. inlet valve, 27. oil pump, 107. pressure unit protective valve, 29. pressure unit, 402. pressure unit AD liquid-level pressure contact.
Embodiment
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
Embodiment 1:
A kind of Buchholz relay check meter comprises: agent structure, cylinder, air compressor, oil pump, pressure unit;
Described agent structure is " U " shape, and first of described " U " shape branches into oil back chamber, and second branches into the gas buffer chamber; The middle beam of described " U " shape is provided with Buchholz relay, and described oil pump and described pressure unit are communicated with described gas buffer chamber by passage respectively;
Described air compressor is connected by first passage with described cylinder, and described first passage arranges electric Proportion valve; The gas outlet of described electric Proportion valve is connected by second channel with described Buchholz relay, and described first passage is provided with heavy gas gas admittance valve; Described second channel is provided with light gas gas admittance valve, and described second channel is provided with the threeway spill valve between described light gas gas admittance valve and Buchholz relay;
Described gas buffer chamber is connected by third channel with described cylinder, and described third channel is provided with pulse valve;
Described gas buffer chamber is connected by four-way with described second channel, and described four-way is provided with three-way exhaust valve; Described three-way exhaust valve and described threeway spill valve form loop;
Described air compressor is connected by Five-channel with the oil-out of Buchholz relay, and described Five-channel is provided with two-position five-way valve;
Described Buchholz relay is respectively equipped with that light gas trigger pip is drawn folder and heavy gas trigger pip is drawn folder; Described pressure unit is provided with pressure unit AD fluid pressure contact.
Cylinder is connected by passage with Buchholz relay, and passage is provided with pulse valve, cylinder by pulse valve to the exhaust of gas buffer chamber, there will be air pulse, air pulse has formed pulse signal by Buchholz relay,, by detecting pulse signal, namely can complete heavy gas and detect; Cylinder enters gas to Buchholz relay,, by testing light Gas Signal, namely can complete light gas and detect, and when simultaneously, gives cylinder, gas buffer chamber and Buchholz relay pressurization, reads force value and time and namely can carry out airtight test.One-piece construction is simple, and floor area is little, can be used for field work.
Embodiment 2:
A kind of Buchholz relay check meter as shown in Figure 1, comprising: agent structure, cylinder 14;
Described agent structure is " U " shape, and first of described " U " shape branches into oil back chamber 15, the second and branches into gas buffer chamber 18; The middle beam of described " U " shape is provided with Buchholz relay 20.
be provided with oil pipe 17 between oil back chamber 15 and Buchholz relay 20, this oil pipe 17 extend in oil back chamber 15, and oil pipe 17 adopts Φ 50 oil pipes in the present embodiment, played the effect of oil return due to oil back chamber 15, therefore, this oil back chamber 15 also is provided with gas outlet 16 and draw-off pipe 22, the model of this gas outlet 16 can be determined as required, what adopt in the present embodiment is Φ 16 gas outlets, draw-off pipe 22 all is connected with the holder food tray with gas outlet 16, the oil of draw-off pipe 22 flows in the holder food tray, gas in gas outlet 16 can carry oil, wherein oil is stayed the holder food tray, gas enters atmosphere from the holder food tray, oil pump 27 is connected with the holder food tray by the 6th passage, oil pump 27 can be from the oil pumping of holder food tray, by this design, initialization before each test, oil filling in main body is all completed by oil pump, oil recycles in whole Buchholz relay check meter, fluid is not easy to spill into outside, reach intelligence, the purpose of environmental protection.This oil pump is miniature oil pump.
For oil-filled to carrying out in gas buffer chamber 18, gas buffer chamber 18 is connected with oil pump 27 by passage, and in order in light gas check, liquid-level pressure to be tested, so gas buffer chamber 18 is connected with pressure unit 29 by passage; In the present embodiment, the tie point of pressure unit 29 and gas cushion chamber 18, the tie point in oil pump 27 and gas buffer chamber 18 all is in the end near Buchholz relay 20; The oil-out of oil pump is provided with inlet valve 106, and by controlling inlet valve 106, oil pump 27 can be as oil-filled in gas buffer chamber 18.Connect on the passage in described pressure unit 29 and described gas buffer chamber 18 and be provided with pressure unit protective valve 107.
This Buchholz relay check meter also comprises air compressor 1 and electric Proportion valve 4, and air compressor 1 is used to device that pressurized air is provided.Gas outlet at air compressor 1 also is provided with gas-oil separation part 2.Described air compressor 1 is connected by first passage with described cylinder 14, and by first passage, air compressor 1 can, to inflation in cylinder 14, be provided with electric Proportion valve on first passage; Electric Proportion valve 4 is provided with AD electric Proportion valve real-time pressure contact 401 and DA electric Proportion valve controlled pressure contact 501.By DA electric Proportion valve controlled pressure contact 501 is set, and according to the instantaneous value of AD electric Proportion valve real-time pressure contact 401, regulate, and then regulate electric Proportion valve 4 and can regulate the air pressure of inflation.Be provided with heavy gas gas admittance valve 104 on first passage, this heavy gas gas admittance valve 104 is between electric Proportion valve 4 and cylinder 14.
The gas outlet of electric Proportion valve 4 is connected by second channel with described Buchholz relay 20, second channel is disposed with light gas gas admittance valve 103, throttling valve 8, retaining valve 9, threeway spill valve 102 on the direction to Buchholz relay 20 from electric Proportion valve 4, Buchholz relay 20 arranges vent port 21, vent port 21 is connected by the exhaust contact pin with second channel, one end of exhaust contact pin is screwed in vent port, the other end is connected with third channel by Φ 4mm flexible pipe, the exhaust contact pin is provided with through hole from an end to the other end, thereby has been communicated with vent port and second channel.
Owing to needing gas buffer chamber 18 is isolated from the outside in heavy gas detects, therefore, gas buffer chamber 18 is connected by four-way with described second channel, the tie point of four-way and second channel is between retaining valve 9 and threeway spill valve 102, and described four-way is provided with three-way exhaust valve 201; Described three-way exhaust valve 201 and described threeway spill valve 102 form loop.
The oil-out of Buchholz relay 20 is provided with pneumatic ball valve 19, this pneumatic ball valve 19 and air compressor 1 be connected by Five-channel, described Five-channel is provided with two-position five-way valve 101.Described pneumatic ball valve 19 is arranged on the interface channel of oil pipe 17 and Buchholz relay 20.
this Buchholz relay check meter is to control by control box, as Fig. 2, shown in, this control box and electric Proportion valve 4, heavy gas gas admittance valve 104, throttling valve 8, retaining valve 9, three-way exhaust valve 201, threeway spill valve 102, vent port 21, pneumatic ball valve 19, two-position five-way valve 101, inlet valve 106, pressure unit protective valve 107, pressure unit 29 etc. connects, unify to control by control box, this control box is connected with above-mentioned various valves and electric Proportion valve 4 and carries out that numerical value is regulated and unobstructed according to passage or cut out and need controlled valve.In the present embodiment, control box adopts the STM32F107VCT6 processor of LQFP100 encapsulation and peripheral circuit to form, and this processor also is provided with touch-screen (provided with processor touch-screen).
Need to proceed as follows by said structure:
Operation one: the initialization operation of device.
Concrete operations are:
The device initialization step, as shown in Figure 3:
(1) start, open inlet valve 106, oil pump 27, wait for after 10 seconds and close inlet valve 106 and oil pump 27.
(2) opening pressure transmitter protective valve 107, close this pressure unit protective valve 107 after reading the numerical value of pressure unit AD liquid-level pressure contact 402.
The initial value A with default that (3) will read compares, it should default initial value be the force value that pasta records while rising to concordant oil pipe 17 top, do not approach continue step (1), step (2) if both be not in,, if approaching, open inlet valve 106, oil pump 27 finishes initialization after taking out 10S again.
Operation two: heavy gas verification operation:
When heavy gas test velocity measurement, the pressurized air that air compressor 1 provides is adjusted pressure by electric Proportion valve 4 and is stored in cylinder 14 by heavy gas gas admittance valve 104.Until pressure when two values differ scope at 1KPa with after interior, unbalanced pulse valve 105, discharge compressed air energy, promotes oil body in body passageways, forms fluctuating velocity, impacts Buchholz relay 20 Internal baffles, produces trigger pip.Whether the control box inner treater can detect the trigger pip situation according to the trigger pip testing circuit, automatically adjusts electric Proportion valve 4 control cylinder 14 internal pressures, thus the flow velocity while measuring the Buchholz relay 20 heavy gas triggering of generation.Therebetween, processor can fill oil storage in main body by control oil pump 27, and while making each measurement, test condition is the same.
Concrete steps, see shown in Fig. 4,5:
Heavy gas (flow velocity) test procedure:
(1) carry out device initialization (seeing operation one).
(2) open heavy gas gas admittance valve 104, the cylinder pressure of processor when oil body reaches the 1m/s pulse velocity with making in main body of obtaining of test, i.e. 1.85 atmospheric pressure, as original pressure value assignment to P0, output to electric Proportion valve 4 by DA electric Proportion valve controlled pressure contact 501, read electric Proportion valve 4 force value by AD electric Proportion valve real-time pressure contact 401, relatively front and back two values are to when two values, differing scope in 1KPa.
(3) close heavy gas gas admittance valve 104, open threeway spill valve 102 and three-way exhaust valve 201, make gas buffer chamber 18 and vent port 21 be isolated from the outside.
(4) the unbalanced pulse valve 105, and cylinder 14 discharges compressed air energy to gas buffer chamber 18, make oil body in the U-shaped agent structure produce fluctuating velocity.Control box counterweight gas trigger pip is drawn folder 25 trigger pips of sending and is detected.
Branch one: trigger pip detected.Draw folder 25 trigger pips that spread out of if heavy gas trigger pip detected, after carrying out the device initialization, minimum pressure values is assigned to P0, open heavy gas gas admittance valve 104, input pressure value P0 outputs to electric Proportion valve 4 by DA electric Proportion valve controlled pressure contact 501, read electric Proportion valve 4 force value by AD electric Proportion valve real-time pressure contact 401, relatively front and back two values are to when two values, differing scope in 1KPa.Close heavy gas gas admittance valve 104, open threeway spill valve 102 and three-way exhaust valve 201, make gas buffer chamber 18 and vent port 21 be isolated from the outside.Unbalanced pulse valve 105, cylinder 14 discharges compressed air energy to gas buffer chamber 18, makes oil body in the U-shaped agent structure produce fluctuating velocity.Control box counterweight gas trigger pip is drawn folder 25 trigger pips of sending and is detected.If the trigger pip of detecting, export Buchholz relay and damage, electric Proportion valve pressure is set to 0, finish verification; If the trigger pip of not detecting,, enter the verification circulation step, this verification circulation step is: after carrying out the device initialization, trigger value is assigned to P1, trigger value is not assigned to P2, get the intermediate value of P1 and P2, this intermediate value is assigned to P0, open heavy gas gas admittance valve 104, input pressure value P0 outputs to electric Proportion valve 4 by DA electric Proportion valve 4 controlled pressure contacts 501, by AD electric Proportion valve real-time pressure contact 401, reads electric Proportion valve 4 force value, and relatively front and back two values are to when two values, differing scope in 1KPa.Close heavy gas gas admittance valve 104, open threeway spill valve 102 and three-way exhaust valve 201, make gas buffer chamber 18 and Buchholz relay 20 vent ports 21 be isolated from the outside.Unbalanced pulse valve 105, cylinder 14 discharges compressed air energy to gas buffer chamber 18, makes oil body in the U-shaped agent structure produce fluctuating velocity.Control box counterweight gas trigger pip is drawn folder 25 trigger pips of sending and is detected.need P1 and P2 are compared before carrying out the verification circulation step at every turn, calculate both poor, the minimum interval of difference and setting is compared, if be less than or equal to minimum interval, stop the verification circulation step, enter the duplication check step, this duplication check step is: carry out continuously three tests under the force value (being considered as critical value) that records in the verification circulation step the last time, and detect respectively trigger pip, if the trigger pip of detecting, be converted into flow speed value output, electric Proportion valve pressure is set to 0, if the trigger pip of can't detect, the force value that records in last verification circulation step is added the minimum interval value, and sum of the two is converted into flow speed value output, electric Proportion valve pressure is set to 0.
Branch two: trigger pip do not detected.Strengthen the force value continuation test that electric Proportion valve 4 is controlled.After carrying out the device initialization, maximum pressure value is assigned to P0, open heavy gas gas admittance valve 104, input pressure value P0 outputs to electric Proportion valve 4 by DA electric Proportion valve controlled pressure contact 501, read electric Proportion valve 4 force value by AD electric Proportion valve real-time pressure contact 401, relatively front and back two values are to when two values, differing scope in 1KPa.Close heavy gas gas admittance valve 104, open threeway spill valve 102 and three-way exhaust valve 201, make gas buffer chamber 18 and vent port 21 be isolated from the outside.Unbalanced pulse valve 105, cylinder 14 discharges compressed air energy to gas buffer chamber 18, makes oil body in the U-shaped agent structure produce fluctuating velocity.Control box counterweight gas trigger pip is drawn folder 25 trigger pips of sending and is detected.If the trigger pip of not detecting, export Buchholz relay 20 and damaged, electric Proportion valve pressure is set to 0, finish verification; If the trigger pip of detecting,, enter the verification circulation step, this verification circulation step is: after carrying out the device initialization, trigger value is assigned to P1, trigger value is not assigned to P2, get the intermediate value of P1 and P2, this intermediate value is assigned to P0, open heavy gas gas admittance valve 104, input pressure value P0 outputs to electric Proportion valve 4 by DA electric Proportion valve controlled pressure contact 501, by AD electric Proportion valve real-time pressure contact 401, reads electric Proportion valve 4 force value, and relatively front and back two values are to when two values, differing scope in 1KPa.Close heavy gas gas admittance valve 104, open threeway spill valve 102 and three-way exhaust valve 201, make gas buffer chamber 18 and vent port 21 be isolated from the outside.Unbalanced pulse valve 105, cylinder 14 discharges compressed air energy to gas buffer chamber 18, makes oil body in the U-shaped agent structure produce fluctuating velocity.Control box counterweight gas trigger pip is drawn folder 25 trigger pips of sending and is detected.need P1 and P2 are compared before carrying out the verification circulation step at every turn, calculate both poor, the minimum interval of difference and setting is compared, if be less than or equal to minimum interval, stop the verification circulation step, enter the duplication check step, this duplication check step is: carry out continuously three tests under the force value (being considered as critical value) that records in the verification circulation step the last time, and detect respectively trigger pip, if the trigger pip of detecting, be converted into flow speed value output, electric Proportion valve 4 pressure are set to 0, if the trigger pip of can't detect, the force value that records in last verification circulation step is added the minimum interval value, and sum of the two is converted into flow speed value output, electric Proportion valve 4 pressure are set to 0.
Operation three: light gas verification
When volume is surveyed in light gas test, by controlling two-position five-way valve 101, close pneumatic ball valve.Then, control electric Proportion valve 4 with 0.5 atmospheric pressure,, through light gas gas admittance valve 103, throttling valve 8, retaining valve 9 and threeway spill valve, toward vent port 21, calm the anger.When Buchholz relay 20 sends light gas trigger pip, stop calming the anger, the difference of calculating pressure transmitter 29 before and after calming the anger, be converted into volumetric values.
Concrete steps are, as shown in Figure 6:
(1) start, set i=0.
(2) carry out the device initialization, see operation one.
(3) open two five-way valves, pneumatic ball valve 19 is closed.Open threeway spill valve 102, retaining valve 9 place passages and vent port 21 are connected.Opening pressure transmitter protective valve 107,, by pressure unit AD liquid-level pressure contact 402, read the liquid-level pressure value P1 of this moment.
(4) open light gas gas admittance valve 103, export 0.5 atmospheric value to electric Proportion valve 4 by DA electric Proportion valve controlled pressure contact 501, from vent port 21 toward the interior air that slowly is pressed into of Buchholz relay 20.Being pressed into air velocity can adjust and be pressed into air velocity by throttling valve 8.
(5) on the lenient side the gas trigger pip draw the folder 24 trigger pip detected after, close light gas gas admittance valve 103, by pressure unit AD liquid-level pressure contact 402, read this moment liquid-level pressure value P2.Calculate P1, P2 difference, be converted into the volumetric values output display.
(6) closing presure transmitter protective valve 107, threeway spill valve 102, two-position five-way valve 101, with i=i+1, with i and 3 comparisons of assignment again.
(7) if be less than or equal to 3 (2)-(6) in carry out this operation; If greater than 3, electric Proportion valve 4 pressure are set to 0, finish verification.
Operation four: airtight verification
During as airtight test,, according to pressure and the time value of user's input, close Φ 50 pneumatic valves, by electric Proportion valve 4, adjust pressure, to cylinder 14, gas buffer chamber and vent port 21, pressurize simultaneously.
Concrete operation step is, as shown in Figure 7:
(1) carry out the device initialization, see operation one.
(2) read force value and the time of user's input.
(3) open two five-way valves 101, light gas gas admittance valve 103, heavy gas gas admittance valve 104, threeway spill valve 102, three-way exhaust valve 201.
(4) force value of user's input is outputed to electric Proportion valve 4 by DA electric Proportion valve controlled pressure 30, the adjustment System internal pressure, time delay finishes test to the time of user's input.
The beneficial effects of the utility model are, on-the-spot three tests completing Buchholz relay by simple operations in the open air, and simple in structure, intelligent degree is high, and measuring accuracy is high.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a Buchholz relay check meter, is characterized in that, comprising: agent structure, cylinder, air compressor, oil pump, pressure unit;
Described agent structure is " U " shape, and first of described " U " shape branches into oil back chamber, and second branches into the gas buffer chamber; The middle beam of described " U " shape is provided with Buchholz relay, and described oil pump and described pressure unit are communicated with described gas buffer chamber by passage respectively;
Described air compressor is connected by first passage with described cylinder, and described first passage arranges electric Proportion valve; The gas outlet of described electric Proportion valve is connected by second channel with described Buchholz relay, and described first passage is provided with heavy gas gas admittance valve; Described second channel is provided with light gas gas admittance valve, and described second channel is provided with the threeway spill valve between described light gas gas admittance valve and Buchholz relay;
Described gas buffer chamber is connected by third channel with described cylinder, and described third channel is provided with pulse valve;
Described gas buffer chamber is connected by four-way with described second channel, and described four-way is provided with three-way exhaust valve; Described three-way exhaust valve and described threeway spill valve form loop;
Described air compressor is connected by Five-channel with the oil-out of Buchholz relay, and described Five-channel is provided with two-position five-way valve;
Described Buchholz relay is respectively equipped with that light gas trigger pip is drawn folder and heavy gas trigger pip is drawn folder; Described pressure unit is provided with pressure unit AD fluid pressure contact.
2. Buchholz relay check meter according to claim 1, is characterized in that, the gas outlet of described air compressor is provided with the gas-oil separation part.
3. Buchholz relay check meter according to claim 1, is characterized in that, described second channel also arranges throttling valve, retaining valve between described light gas gas admittance valve and described threeway spill valve.
4. Buchholz relay check meter according to claim 3, is characterized in that, described Buchholz relay is provided with vent port, and described vent port is connected with described second channel by the exhaust contact pin.
5. Buchholz relay check meter according to claim 1, is characterized in that, the oil-out of described oil pump is provided with inlet valve.
6. Buchholz relay check meter according to claim 1, is characterized in that, described pressure unit is provided with the pressure unit protective valve.
7. Buchholz relay check meter according to claim 1, is characterized in that,
Described oil back chamber is provided with oil pipe, draw-off pipe and gas outlet, and described oil pipe is connected with described Buchholz relay, and described draw-off pipe is connected with the holder food tray respectively with described gas outlet, and described oil pump is connected with described holder food tray by the 6th passage.
8. Buchholz relay check meter according to claim 1, is characterized in that,
Described electric Proportion valve is provided with the contact of AD electric Proportion valve real-time pressure and the contact of DA electric Proportion valve controlled pressure.
9. Buchholz relay check meter according to claim 1, is characterized in that,
The oil-out of described Buchholz relay is provided with pneumatic ball valve, and described pneumatic ball valve is connected with described two-position five-way valve.
10. according to claim 1-9 described Buchholz relay check meters of any one, is characterized in that, also comprises control box; Described control box is connected with described electric Proportion valve, described heavy gas gas admittance valve, described light gas gas admittance valve, described pulse valve, described three-way exhaust valve, described threeway spill valve, described two-position five-way valve, described pressure unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203688531U CN203287495U (en) | 2013-06-25 | 2013-06-25 | Gas relay check meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203688531U CN203287495U (en) | 2013-06-25 | 2013-06-25 | Gas relay check meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203287495U true CN203287495U (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203688531U Expired - Lifetime CN203287495U (en) | 2013-06-25 | 2013-06-25 | Gas relay check meter |
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| CN (1) | CN203287495U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344910A (en) * | 2013-06-25 | 2013-10-09 | 刘赵 | Gas relay check meter |
| CN107478983A (en) * | 2017-07-25 | 2017-12-15 | 国网福建省电力有限公司 | A kind of online verifying attachment of main transformer Buchholz relay and its method for inspection |
-
2013
- 2013-06-25 CN CN2013203688531U patent/CN203287495U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344910A (en) * | 2013-06-25 | 2013-10-09 | 刘赵 | Gas relay check meter |
| CN103344910B (en) * | 2013-06-25 | 2015-08-12 | 刘赵 | Buchholz relay check meter |
| CN107478983A (en) * | 2017-07-25 | 2017-12-15 | 国网福建省电力有限公司 | A kind of online verifying attachment of main transformer Buchholz relay and its method for inspection |
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