CN204328465U - A kind of high-tension switch gear inflator - Google Patents
A kind of high-tension switch gear inflator Download PDFInfo
- Publication number
- CN204328465U CN204328465U CN201420697597.5U CN201420697597U CN204328465U CN 204328465 U CN204328465 U CN 204328465U CN 201420697597 U CN201420697597 U CN 201420697597U CN 204328465 U CN204328465 U CN 204328465U
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- receiving groove
- switch gear
- tension switch
- gas cylinder
- inflator
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- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 238000012360 testing method Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 7
- 241001233242 Lontra Species 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
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Abstract
The utility model provides a kind of high-tension switch gear inflator, comprise the receiving groove for carrying liquid heat-conducting medium, the top of receiving groove is provided with air feed bottle and enters receiving groove to immerse the opening in liquid thermal conductivity media, is provided with the heater for heating liquid thermal conductivity media in receiving groove.When to the chamber inflated of high-tension switch gear, gas cylinder occurs that temperature declines, heating compensation can be carried out to gas cylinder by liquid thermal conductivity media, because gas cylinder immerses in liquid thermal conductivity media, more even to the heating of gas cylinder entirety, there will not be the problem of local heating inequality, gas cylinder internal medium is relatively stable, can ensure that whole gas cylinder is to the charging efficiency during chamber inflated of high-tension switch gear.
Description
Technical field
The utility model relates to a kind of high-tension switch gear inflator.
Background technique
Along with the increase of electricity transmission distance and transmission line capability, the development of power transmission electric network is progressively to ultrahigh pressure and extra-high voltage future development.Along with the lifting of electric pressure, the chamber volume of high-tension switch gear increases sharply, and gas consumption increases severely, and for 1100kV high-tension switch gear, its GCB gas chamber volume is more than 20 cubic meters, needs SF
6gas is kg more than 800.At present, SF
6gas all adopts pressurized liquefied mode to store, transport, and is inflated by gasification in erecting bed to high-tension switch gear.Due to SF
6the physical property that gas is special, needs to absorb a large amount of heats, very easily makes the liquid SF in gas cylinder in gasification
6freeze and solidify, cause inflation rate to decline, in the winter or northern and this situation in high altitude localities is more frequent of cold.
Be disclose one in the Chinese utility model patent of CN203585807U for reducing SF at Authorization Notice No.
6the new tool of cyclinder gas residual rate, comprise small handcart, gas cylinder is fixed on small handcart, when the chamber inflated of gas cylinder to high-tension switch gear, the three groups of heaters be made up of open-close type heater band respectively spaced apart be along the vertical direction provided with by small handcart heat gas cylinder, to avoid occurring the problem of solidifying of freezing in gas cylinder, reduce residue tolerance in gas cylinder.
But each heater on above-mentioned small handcart heats gas cylinder local, easily there is the problem uneven to the heating of gas cylinder entirety, just good to the local heating effect of heater or close heater on gas cylinder, and it is relatively poor away from the heating effect in the place of heater on gas cylinder, and then causing localized ice build in gas cylinder to solidify, this will affect the normal inflation of gas cylinder.Owing to have employed multiple local heater, once certain local heater damages and cannot normal heating, need heating small handcart quit work and carry out Maintenance and Repair, this will the normal work of the whole heating small handcart of impact, affects normal charging efficiency.
Model utility content
The utility model provides a kind of high-tension switch gear inflator, easily occurs heating uneven technical problem when being heated gas cylinder by local heater in prior art to solve.
The technological scheme of high-tension switch gear inflator provided by the utility model is: a kind of high-tension switch gear inflator, comprise the receiving groove for carrying liquid heat-conducting medium, the top of receiving groove is provided with air feed bottle and enters receiving groove to immerse the opening in liquid thermal conductivity media, is provided with the heater for heating liquid thermal conductivity media in receiving groove.
Be provided with the temperature transducer for monitoring liquid heat-conducting medium temperature in described receiving groove, described heater with can according to the heater control element control connection of the monitoring result control heater switch motion of temperature transducer.
The air outlet of each gas cylinder is communicated with the gas-collecting structure to high-tension switch gear central gas supply when also comprising for being placed with plural gas cylinder in receiving groove by described inflator, gas-collecting structure comprises main pipeline and the branch pipe(tube) for being communicated with main pipeline and corresponding gas cylinder, and main pipeline is provided with the air outlet for being communicated with the air chamber of high-tension switch gear.
Described inflator comprises the pressure transducer of the air chamber air pressure for detecting high-tension switch gear, described inflator also comprises the gas distribution channel of the air chamber for the air outlet and high-tension switch gear being communicated with described main pipeline, gas distribution channel is provided with solenoid valve, solenoid valve with can according to the Air Valve Control element control connection of the testing result Controlling solenoid valve switch motion of pressure transducer.
Described inflator also comprises the alarm for reaching setting value alarm in the measurement result of pressure transducer, and described gas distribution channel is provided with the manual switch valve for closing gas distribution channel after described alarm sends alarm signal.
Each branch pipe(tube) of described gas-collecting structure is respectively equipped with the branch road air valve controlling branch pipe(tube) break-make.
Described receiving groove is also provided with the hoisting structure for lifting transhipment gas cylinder in receiving groove, hoisting structure comprises the hanger frame that can rotate around the center of rotation axis vertically extended, hanger frame is provided with the walking track extended transversely, the mobile electric wire hoist be equipped with for handling gas cylinder on walking track.
Described hoisting structure also comprises the fixed base be fixed on receiving groove, the hinge mounted support underframe on fixed base and the support side lever for support underframe described in supporting and location, described hanger frame rotational support is assemblied on described support underframe, one end of support side lever is hinged with support side lever, the other end then passes through the removable assembling of bearing pin with fixed base, and support side lever and fixed base are respectively equipped with the bearing pin mounting hole with the removable assembling of described bearing pin.
Described receiving groove is provided with the outlet for being drained by liquid thermal conductivity media.
The heating element of described heater is be arranged in the heating wire in receiving groove inner chamber, is provided with the metal otter board protected it at heating wire side.
The heating element of described heater is be arranged in the heating wire in the inner chamber of cell wall and/or receiving groove inside described receiving groove.
The beneficial effects of the utility model are: in high-tension switch gear inflator provided by the utility model, gas cylinder is loaded in receiving groove, by heater, the liquid thermal conductivity media in receiving groove is heated, when gas cylinder is to the chamber inflated of high-tension switch gear, heat compensation can be carried out to gas cylinder by liquid thermal conductivity media, accelerate the liquefied gas vapo in gas cylinder, improve charging efficiency.Because gas cylinder immerses in liquid thermal conductivity media, relatively more even to the heating of gas cylinder entirety, there will not be the problem of local heating inequality, gas cylinder internal medium is relatively stable, can ensure that whole gas cylinder is to the charging efficiency during chamber inflated of high-tension switch gear.
Further, heater is by the temp control switch of the liquid thermal conductivity media of heater control element measured by temperature transducer, when liquid thermal conductivity media is lower, heater control element control heater heats liquid thermal conductivity media, and when liquid thermal conductivity media temperature exceedes setting value, control heater is stopped heating, to save the energy by heater control element.
Further, receiving groove is provided with outlet, when liquid thermal conductivity media temperature is reduced to setting value, through outlet, liquid thermal conductivity media can be discharged, with the liquid thermal conductivity media avoiding temperature too low, damage be caused to gas cylinder.
Further, the plural gas cylinder be placed in receiving groove can be communicated with the central gas supply formed the air chamber of high-tension switch gear by gas-collecting structure, effectively can improve charging efficiency.
Further, the pressure size of high-voltage switch gear air chamber can be detected by pressure transducer, when pressure transducer detects that the pressure of air chamber reaches setting value, pressure control valve is closed according to the testing result Controlling solenoid valve of pressure transducer, gas distribution channel disconnects, and when pressure transducer detects that the pressure of air chamber does not reach setting value, testing result Controlling solenoid valve according to pressure transducer is opened by pressure control valve, gas distribution channel is opened, continue the chamber inflated to high-tension switch gear, the automatic control to inflator can be realized like this, reduce labor strength.
Further, when the testing result of pressure transducer reaches setting value, alarm will send alarm signal, manually close manual switch valve by operator, and gas distribution channel is closed.
Further, each branch pipe(tube) of gas-collecting structure is respectively equipped with air valve, like this when single air cylinder underpressure, air valve can be closed by volume, so that change gas cylinder at any time, can ensure the normal work of inflator in Renewal process simultaneously.
Further, inflator also comprises the hoisting structure for lifting transhipment gas cylinder, during concrete lifting, adopt electric wire hoist to be lifted by crane by gas cylinder, then promote hanger frame and rotate, when gas cylinder is transported to target location, electric wire hoist is by below gas cylinder, and gas cylinder enters in liquid thermal conductivity media, and then realizes the lifting operation to gas cylinder, reduce labor intensity during gas cylinder transhipment, increase work efficiency.
Further, when needs lifting transhipment gas cylinder, bearing pin correspondence is inserted in the bearing pin mounting hole supported on side lever and fixed base, support side lever by supporting and location support underframe and hanger frame, thus be convenient to lifting transhipment gas cylinder, and when not needing lifting gas cylinder, bearing pin can be disassembled from the bearing pin mounting hole supported side lever and fixed base, support side lever and fixed base are assigned to, now, the support underframe be hinged on fixed base can be fallen, be convenient to the mobile transhipment of whole inflator.
Further, the heating element of heater adopts the heating wire be arranged in receiving groove inner chamber, on the one hand structure simple, be convenient to arrange, also can improve the efficiency of heating surface of heater to liquid thermal conductivity media on the other hand.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of high-tension switch gear provided by the utility model;
Fig. 2 is A place partial enlarged drawing in Fig. 1;
Fig. 3 is the internal structure schematic diagram of receiving groove in Fig. 1;
Fig. 4 is the structural representation of gas-collecting structure in Fig. 1;
Fig. 5 is the schematic diagram of pressure detection structure in Fig. 1;
Fig. 6 is the structural representation of hoisting structure in Fig. 1.
Embodiment
As shown in Figures 1 to 6, a kind of embodiment of high-tension switch gear inflator, inflator in this embodiment comprises the wheelbarrow platform that bottom is provided with supporting wheel, wheelbarrow platform is installed with the receiving groove 4 for carrying liquid heat-conducting medium, liquid thermal conductivity media herein can adopt water, the top of receiving groove 4 is provided with air feed bottle and enters receiving groove to immerse the opening in liquid thermal conductivity media, the heater for heating liquid thermal conductivity media is provided with in receiving groove 4, the heating element of heater is be arranged in the heating wire 8 in described receiving groove inner chamber, heating wire 8 herein comprises the multiple ring set silk sections extended along gas cylinder arranged direction, each ring set silk Duan Jun vertically extends the structure that ring set silk section and gas cylinder immerse in liquid thermal conductivity media is coincide, to ensure heating effect, and, the metal otter board 9 supporting protection is also provided with at the side of heating wire 8.In the present embodiment, in receiving groove 4, be also provided with the temperature transducer for monitoring liquid heat-conducting medium temperature, heater then with can according to the heater control element control connection of the monitoring result control heater switch motion of temperature transducer.Like this, by the cooperation of temperature transducer and heater control element, the temperature of the liquid thermal conductivity media in whole receiving groove 4 can be in setting range, form approximately constant temperature.
In addition, for preventing liquid thermal conductivity media temperature too low and damaging to gas cylinder 3, receiving groove 4 is provided with the outlet for draining at liquid thermal conductivity media.
In the present embodiment, the inner chamber of receiving groove 4 is larger, multiple gas cylinder can be placed like this in receiving groove, the opening of receiving groove 4 is installed with gas cylinder righting framework 41, gas cylinder righting framework 41 is furnished with multiple frame mouth 42, after gas cylinder 3 is put into receiving groove 4, gas cylinder 3 bottom support is placed on the bottom land of receiving groove 4, and gas cylinder 3 top is then located by frame mouth 42 righting of gas cylinder righting framework 41.Multiple gas cylinders 3 in the present embodiment are arranged in two row intervals, are furnished with the described heating wire 8 for heating the liquid thermal conductivity media in receiving groove between the interval of two row gas cylinders 3.For improving charging efficiency, in the present embodiment, be communicated with to carry out air feed to the gas-collecting structure 5 of high-tension switch gear central gas supply to the air chamber of high-tension switch gear 1 by the air outlet of each gas cylinder 3, gas-collecting structure 5 comprises main pipeline 51 and the branch pipe(tube) 43 for being communicated with main pipeline 51 and corresponding gas cylinder, branch pipe(tube) 43 herein comprises the Hard link pipeline section be communicated with the air outlet of main pipeline 51 and gas cylinder 3 respectively at two ends and the pipeline section that is flexible coupling bridged between two Hard link pipeline sections, be convenient to realize main pipeline 51 be like this communicated with the corresponding of gas cylinder 3, main pipeline 51 is provided with the air outlet for being communicated with the air chamber of high-tension switch gear, each branch pipe(tube) 43 is provided with the branch road air valve 52 for controlling corresponding branch pipe(tube) break-make, this branch road air valve 52 specifically can be arranged on the Hard link pipeline section of the end, one end be connected with gas cylinder of branch pipe(tube).
In the present embodiment, inflator also comprises the gas distribution channel 7 of the air chamber for the air outlet and high-tension switch gear 1 being communicated with described main pipeline 51, gas distribution channel 7 is provided with the pressure detection structure 6 can monitored the gas atmosphere in passage 7, pressure detection structure 6 herein comprises and being arranged on gas distribution channel 7 to control the solenoid valve 65 of gas distribution channel break-make, also comprise threeway 65, first joint of threeway is communicated with solenoid valve 65, second joint is connected with Pressure testing and warning device 61, 3rd joint is communicated with manual switch valve 64, Pressure testing herein and warning device 61 comprise the pressure transducer for detecting gas pressure in gas distribution channel and the alarm for reaching setting value alarm in the measurement result of pressure transducer, solenoid valve herein 65 with can according to the Air Valve Control element control connection of the testing result Controlling solenoid valve switch motion of pressure transducer, the Non-follow control after described alarm sends alarm signal of manual switch valve 64 herein closes gas distribution channel 7.In addition, filter 62 is also provided with in the end joint of gas distribution channel 7 to filter the gas entered in high-tension switch gear 1.
In the present embodiment, because gas cylinder 3 quantity open ended in receiving groove 4 is more, for ease of transhipment gas cylinder, receiving groove 4 is provided with the hoisting structure 2 for lifting transhipment gas cylinder 3 in receiving groove 4, hoisting structure 2 comprises the fixed base 24 be fixed on receiving groove 4, on fixed base 24, hinge mounted has support underframe 25, support underframe 25 is by support side lever 23 supporting and location, the one end and the support underframe 25 that support side lever 23 are hinged, the other end is then by bearing pin and the removable assembling of fixed base 24, supporting bearing pin mounting hole side lever 23 and fixed base 24 being respectively equipped with the removable assembling with bearing pin.Support underframe 25 is rotatably equipped with hanger frame 21 around the center of rotation axis vertically extended, and hanger frame 21 is provided with the walking track extended transversely, the mobile electric wire hoist 22 be equipped with for handling gas cylinder on walking track.
During use, be communicated with corresponding with the air chamber of high-tension switch gear 1 for gas distribution channel 7, and use hoisting structure 2 to be transported in receiving groove 4 by gas cylinder 3 lifting, and gas cylinder 3 is immersed in the water, gas cylinder 3 is communicated with corresponding branch pipe(tube) 53, open branch road air valve 52, inflated, along with SF by the air chamber of gas-collecting device 5 to high-tension switch gear 1
6the gasification of gas, the water temperature in receiving groove 4 will lower gradually, and when water temperature is reduced to setting value, heater control element works according to the monitoring result control heater of temperature transducer, heater Automatic-heating, guarantee that water temperature is in the scope of setting.When air chamber pressure first time reaches setting value, air pressure control unit is closed according to the testing result Controlling solenoid valve 66 of pressure transducer, gas distribution channel 7 disconnects, inflation stops, after gas indoor gas is static, air pressure falls after rise, testing result Controlling solenoid valve 66 according to pressure transducer is opened by air pressure control unit, continue to inflate air chamber, after air chamber pressure reaches setting value again, solenoid valve 66 cuts out again, if the static rear air pressure of gas indoor gas does not fall after rise, inflation terminates, alarm sends alarm signal, operator close manual switch valve 64.If the static rear pressure of air chamber gas continues to fall after rise, then solenoid valve 66 again will be opened and continue inflation, until air chamber pressure reaches setting value in state of rest.
And when gas in the pressure gauge display bottle on gas cylinder 3 is not enough, then close the air valve on gas-collecting structure 5 on corresponding branch pipe(tube), utilize hoisting structure 2 to change gas cylinder, then continue inflation.And when water temperature is below the freezing point, for preventing causing damage to gas cylinder, the water in receiving groove 4 is drained.
When inflator is transported, bearing pin is extracted, support underframe and hanger frame can be fallen, after inflator transhipment puts in place, then support underframe and hanger frame are holded up.
The inflator that the present embodiment provides, utilize temperature transducer, heater and heater control element that receiving groove can be made to form thermostatic water bath, and constant water temperature can ensure that the gas in gas cylinder is in steady state, effectively can ensure the stable of aeration speed.
In the present embodiment, in receiving groove, be placed with temperature transducer, in other embodiments, also can save temperature transducer, and be heated by manual control heater.
In the present embodiment, when needs are inflated single air chamber by multiple gas cylinder, can gas-collecting structure be adopted, in other embodiments, if only hold single air cylinder in receiving groove, also can save gas-collecting structure.
In the present embodiment, hanger frame rotates and is assemblied on support underframe, in other embodiments, also hanger frame directly can be rotated and be assemblied on wheelbarrow platform or receiving groove.
In the present embodiment, gas-collecting structure can be located at outside receiving groove completely, also when receiving groove has the installation cavity that shell and inner bag formed, can be arranged at by part gas-collecting structure in the installation cavity of receiving groove, save installing space.
Claims (10)
1. a high-tension switch gear inflator, it is characterized in that: comprise the receiving groove for carrying liquid heat-conducting medium, the top of receiving groove is provided with air feed bottle and enters receiving groove to immerse the opening in liquid thermal conductivity media, is provided with the heater for heating liquid thermal conductivity media in receiving groove.
2. high-tension switch gear inflator according to claim 1, it is characterized in that: in described receiving groove, be provided with the temperature transducer for monitoring liquid heat-conducting medium temperature, described heater with can according to the heater control element control connection of the monitoring result control heater switch motion of temperature transducer.
3. high-tension switch gear inflator according to claim 1 and 2, it is characterized in that: when described inflator also comprises for being placed with plural gas cylinder in receiving groove, the air outlet of each gas cylinder is communicated with the gas-collecting structure to high-tension switch gear central gas supply, gas-collecting structure comprises main pipeline and the branch pipe(tube) for being communicated with main pipeline and corresponding gas cylinder, and main pipeline is provided with the air outlet for being communicated with the air chamber of high-tension switch gear.
4. high-tension switch gear inflator according to claim 3, it is characterized in that: described inflator comprises the pressure transducer of the air chamber air pressure for detecting high-tension switch gear, described inflator also comprises the gas distribution channel of the air chamber for the air outlet and high-tension switch gear being communicated with described main pipeline, gas distribution channel is provided with solenoid valve, solenoid valve with can according to the Air Valve Control element control connection of the testing result Controlling solenoid valve switch motion of pressure transducer.
5. high-tension switch gear inflator according to claim 4, it is characterized in that: described inflator also comprises the alarm for reaching setting value alarm in the measurement result of pressure transducer, described gas distribution channel is provided with the manual switch valve for closing gas distribution channel after described alarm sends alarm signal.
6. high-tension switch gear inflator according to claim 3, is characterized in that: each branch pipe(tube) of described gas-collecting structure is respectively equipped with the branch road air valve controlling branch pipe(tube) break-make.
7. high-tension switch gear inflator according to claim 3, it is characterized in that: described receiving groove is also provided with the hoisting structure for lifting transhipment gas cylinder in receiving groove, hoisting structure comprises the hanger frame that can rotate around the center of rotation axis vertically extended, hanger frame is provided with the walking track extended transversely, the mobile electric wire hoist be equipped with for handling gas cylinder on walking track.
8. high-tension switch gear inflator according to claim 7, it is characterized in that: described hoisting structure also comprises the fixed base be fixed on receiving groove, the hinge mounted support underframe on fixed base and the support side lever for support underframe described in supporting and location, described hanger frame rotational support is assemblied on described support underframe, one end of support side lever is hinged with support side lever, the other end then passes through the removable assembling of bearing pin with fixed base, and support side lever and fixed base are respectively equipped with the bearing pin mounting hole with the removable assembling of described bearing pin.
9. high-tension switch gear inflator according to claim 1 and 2, is characterized in that: described receiving groove is provided with the outlet for being drained by liquid thermal conductivity media.
10. high-tension switch gear inflator according to claim 1 and 2, is characterized in that: the heating element of described heater is be arranged in the heating wire in receiving groove inner chamber, is provided with the metal otter board protected it at heating wire side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420697597.5U CN204328465U (en) | 2014-11-20 | 2014-11-20 | A kind of high-tension switch gear inflator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420697597.5U CN204328465U (en) | 2014-11-20 | 2014-11-20 | A kind of high-tension switch gear inflator |
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| Publication Number | Publication Date |
|---|---|
| CN204328465U true CN204328465U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420697597.5U Withdrawn - After Issue CN204328465U (en) | 2014-11-20 | 2014-11-20 | A kind of high-tension switch gear inflator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204328465U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390134A (en) * | 2014-11-20 | 2015-03-04 | 河南平高电气股份有限公司 | Inflating device for high-pressure switch equipment |
| CN105972429A (en) * | 2016-06-27 | 2016-09-28 | 河南平高电气股份有限公司 | Sulfur hexafluoride gas cylinder rack and inflation device using gas cylinder rack |
| CN110107801A (en) * | 2019-04-30 | 2019-08-09 | 国网江苏省电力有限公司常州供电分公司 | The round-the-clock making-up air device of GIS device suitable for the more leak sources of multi-compartment |
-
2014
- 2014-11-20 CN CN201420697597.5U patent/CN204328465U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390134A (en) * | 2014-11-20 | 2015-03-04 | 河南平高电气股份有限公司 | Inflating device for high-pressure switch equipment |
| CN105972429A (en) * | 2016-06-27 | 2016-09-28 | 河南平高电气股份有限公司 | Sulfur hexafluoride gas cylinder rack and inflation device using gas cylinder rack |
| CN110107801A (en) * | 2019-04-30 | 2019-08-09 | 国网江苏省电力有限公司常州供电分公司 | The round-the-clock making-up air device of GIS device suitable for the more leak sources of multi-compartment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150513 Effective date of abandoning: 20170503 |
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| AV01 | Patent right actively abandoned |