CN204537803U - With SF 6and N 2mist is the gas-insulated transformer of dielectric - Google Patents
With SF 6and N 2mist is the gas-insulated transformer of dielectric Download PDFInfo
- Publication number
- CN204537803U CN204537803U CN201520046277.8U CN201520046277U CN204537803U CN 204537803 U CN204537803 U CN 204537803U CN 201520046277 U CN201520046277 U CN 201520046277U CN 204537803 U CN204537803 U CN 204537803U
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- CN
- China
- Prior art keywords
- housing
- mist
- gas
- rotating shaft
- dielectric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003595 mist Substances 0.000 claims abstract description 50
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052802 copper Inorganic materials 0.000 claims abstract description 32
- 239000010949 copper Substances 0.000 claims abstract description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000498 cooling water Substances 0.000 claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 12
- 238000012806 monitoring device Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 23
- 238000005259 measurement Methods 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 21
- 238000012544 monitoring process Methods 0.000 claims description 16
- 238000009413 insulation Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model discloses a kind of with SF
6and N
2mist is the gas-insulated transformer of dielectric, comprise the seal casinghousing being filled with SF6 and N2 mist, be arranged on iron core in housing and around the high pressure winding on iron core and low pressure winding, described iron core is wound around the copper pipe with heat-conducting layer outward, the two ends of described copper pipe pass housing and are tightly connected with it, the described insulating water inlet pipe of copper pipe free end is connected with the cooling water recirculation system of outside, the Self-pressurizing agri mechanism be communicated with it is provided with outside described housing, described housing is provided with mist rabbling mechanism, described mist rabbling mechanism comprises the rotating shaft be rotationally connected with it through housing, be arranged at the drive motors be positioned at outside housing that housing inner sleeve turns the blade in rotating shaft and is connected with rotating shaft, described housing is provided with local discharge on-line monitoring device.Not only dielectric strength is high, perfect heat-dissipating, and security performance is good, floor space is little, automatic alarm.
Description
Technical field
The utility model relates to gas-insulated transformer technical field, and particularly one is with SF
6and N
2mist is the gas-insulated transformer of dielectric.
Background technology
High-power transformer is all generally oil-cooled transformer, its coolant (transformer oil) easily catch fire and also dielectric strength relative to SF
6not high.If change not in time after the air-breather silica gel of transformer makes moist, main transformer just may be caused to make moist, and cause the accident hidden danger.In addition, oil-cooled transformer also has bulky, the shortcomings such as transport and maintenance inconvenience.
Along with the development of urban construction, big and medium-sized cities population is all the more intensive, and skyscraper, underpass and building are more and more, and China's electric railway simultaneously and subway are also in high-speed development period, add people to the dependence of electric power and degree of consumption also more and more higher, power consumption sharply rises.Therefore need to install numerous high-power transformer, the high-power transformer used at present is all generally oil-cooled transformer, its coolant (transformer oil) easily catch fire and also dielectric strength relative to SF
6not high.If change not in time after the air-breather silica gel of transformer makes moist, main transformer just may be caused to make moist, burn, explode, and the security of the lives and property of people in serious threat, the seepage of oil also can serious environment pollution, and the noise of oil-immersed type transformer is high, transformer station's area occupied is large, and cause the accident hidden danger.In addition, oil-cooled transformer also has bulky, the shortcomings such as transport and maintenance inconvenience.
Utility model content
The technical problems to be solved in the utility model is: solve the deficiencies in the prior art, a kind of gas-insulated transformer being dielectric with SF6 and N2 mist is provided, not only dielectric strength is high, perfect heat-dissipating, and security performance is good, floor space is little, automatic alarm.
The utility model solves the technical scheme that its technical problem adopts: a kind of with SF
6and N
2mist is the gas-insulated transformer of dielectric, comprises and is filled with SF
6and N
2the seal casinghousing of mist, be arranged on iron core in housing and around the high pressure winding on iron core and low pressure winding, described iron core is wound around the copper pipe with heat-conducting layer outward, the two ends of described copper pipe pass housing and are tightly connected with it, the described insulating water inlet pipe of copper pipe free end is connected with the cooling water recirculation system of outside, the Self-pressurizing agri mechanism be communicated with it is provided with outside described housing, described housing is provided with mist rabbling mechanism, described mist rabbling mechanism comprises the rotating shaft be rotationally connected with it through housing, be arranged at the drive motors be positioned at outside housing that housing inner sleeve turns the blade in rotating shaft and is connected with rotating shaft, described housing is provided with local discharge on-line monitoring device, this device comprises uhf sensor, Signal acquiring and processing module, measurement module is put in office, information transmission modular, partial discharge monitoring terminal, the output of described uhf sensor is connected with the input of Signal acquiring and processing module, the input that measurement module is put in output and the office of described Signal acquiring and processing module is connected, the input of output and information transmission modular that measurement module is put in described office is connected, described information transmission modular is connected with partial discharge monitoring terminal.
Described cooling water recirculation system is in series with screw pipe radiator.
Described rotating shaft and housing are tightly connected by oil seal mechanism.
Described Self-pressurizing agri mechanism comprises the air inlet pipe be communicated with housing, the air pump be connected with air inlet pipe, the gas tank for air pump air feed, the pressure sensor be arranged in housing, and described air pump is all connected with Programmable Logic Controller with pressure sensor.
Described air inlet pipe is provided with unidirectional valve.
Seal casinghousing of the present utility model is filled with SF
6and N
2mist, adopts SF
6/ N
2mist is as gas-insulated transformer (the gas insulated transformer of dielectric, GIT) be a kind ofly do not fire not quick-fried environment protection type transformer, it not only overcome oil-immersed type transformer inflammable, run unsafe shortcoming, also overcome the shortcoming that dry-type transformer capacity is little.SF on the other hand
6/ N
2the insulation property of mist are better than single SF
6gas.Described iron core is wound around the copper pipe with heat-conducting layer outward, the two ends of described copper pipe pass housing and are tightly connected with it, the described insulating water inlet pipe of copper pipe free end is connected with the cooling water recirculation system of outside, the copper pipe with heat-conducting layer is wrapped in good heat dissipation effect on iron core, arrange thermal insulation layer outside copper pipe, copper pipe and iron core contact area greatly, are conducive to heat transfer on the one hand simultaneously, play insulating effect on the other hand, prevent copper pipe charged.The Self-pressurizing agri mechanism be communicated with it is provided with outside described housing, in uniform field the puncture voltage of mist and the pressure of gas substantially linear, when not changing existing transformer device structure and size, by ensureing that the pressure of the mist in housing ensures the dielectric strength of GIS, can make in housing, there is sufficient mist on the other hand.Described housing is provided with mist rabbling mechanism, described mist rabbling mechanism comprise be rotationally connected with it through housing rotating shaft, be arranged at the drive motors be positioned at outside housing that housing inner sleeve turns the blade in rotating shaft and be connected with rotating shaft, after mist is heated, easily mixing is uneven, Mixed gas insulation performance and flash-over characteristic is caused greatly to reduce, axis of rotation is driven by drive motors, it is even that rotating shaft drive vane rotates the gas and vapor permeation making housing, effectively can improve the combination property of mist.
Described housing is provided with local discharge on-line monitoring device, this device comprises uhf sensor, Signal acquiring and processing module, measurement module is put in office, information transmission modular, partial discharge monitoring terminal, the output of described uhf sensor is connected with the input of Signal acquiring and processing module, the input that measurement module is put in output and the office of described Signal acquiring and processing module is connected, the input of output and information transmission modular that measurement module is put in described office is connected, described information transmission modular is connected with partial discharge monitoring terminal, by uhf sensor, the uhf electromagnetic wave signal produced during partial discharge in power transformer is detected, thus obtain the relevant information of partial discharge, realize the on-line monitoring of partial discharge, fault location and defect recognition.Therefore, transformer of the present invention can in the use in the place such as underground substation and narrow space, the urban district that densely populated, fire protection requirement is high.Partial discharge is the initial stage performance of discharging fault in GIT, and carrying out Partial Discharge Detection to GIT is the important means ensureing GIT safe operation.Local discharge signal contains abundant state of insulation information, the defect manufacturing GIT, install and produce in running can effectively reflect, generation and the order of severity thereof of insulation fault can be detected, thus propose to report to the police at the commitment of accident, in a planned way to arrange maintenance, the damage of minimizing equipment, avoids accident that the massive losses brought occurs.Described cooling water recirculation system is in series with screw pipe radiator, screw pipe radiator and the large good heat dissipation effect of contacting external air area; Described rotating shaft and housing are tightly connected by oil seal mechanism, prevent gas effusion in housing; Described Self-pressurizing agri mechanism comprises the air inlet pipe be communicated with housing, the air pump be connected with air inlet pipe, the gas tank for air pump air feed, the pressure sensor be arranged in housing, described air pump is all connected with Programmable Logic Controller with pressure sensor, the pressure values of housing is set by controller, when pressure in housing is lower than set point, the work of Controlled by Programmable Controller air pump is to gas transmission in housing, meet enough pressure, quit work when pressure in housing reaches set point air pump; Described air inlet pipe is provided with unidirectional valve, makes housing seal effective, prevents gas from overflowing.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is local discharge on-line monitoring device module diagram of the present utility model.
Embodiment
Embodiment 1: as shown in Figure 1, 2, a kind of with SF
6and N
2mist is the gas-insulated transformer of dielectric, comprises and is filled with SF
6and N
2the seal casinghousing of mist, be arranged on iron core in housing and around the high pressure winding on iron core and low pressure winding, described iron core is wound around the copper pipe with heat-conducting layer outward, the two ends of described copper pipe pass housing and are tightly connected with it, the described insulating water inlet pipe of copper pipe free end is connected with the cooling water recirculation system of outside, the Self-pressurizing agri mechanism be communicated with it is provided with outside described housing, described housing is provided with mist rabbling mechanism, described mist rabbling mechanism comprises the rotating shaft be rotationally connected with it through housing, be arranged at the drive motors be positioned at outside housing that housing inner sleeve turns the blade in rotating shaft and is connected with rotating shaft, described housing is provided with local discharge on-line monitoring device, this device comprises uhf sensor, Signal acquiring and processing module, measurement module is put in office, information transmission modular, partial discharge monitoring terminal, the output of described uhf sensor is connected with the input of Signal acquiring and processing module, the input that measurement module is put in output and the office of described Signal acquiring and processing module is connected, the input of output and information transmission modular that measurement module is put in described office is connected, described information transmission modular is connected with partial discharge monitoring terminal.
Described rotating shaft and housing are tightly connected by oil seal mechanism.
Described Self-pressurizing agri mechanism comprises the air inlet pipe be communicated with housing, the air pump be connected with air inlet pipe, the gas tank for air pump air feed, the pressure sensor be arranged in housing, and described air pump is all connected with Programmable Logic Controller with pressure sensor.
Embodiment 2: as shown in Figure 1, 2, a kind of with SF
6and N
2mist is the gas-insulated transformer of dielectric, comprises and is filled with SF
6and N
2the seal casinghousing of mist, be arranged on iron core in housing and around the high pressure winding on iron core and low pressure winding, described iron core is wound around the copper pipe with heat-conducting layer outward, the two ends of described copper pipe pass housing and are tightly connected with it, the described insulating water inlet pipe of copper pipe free end is connected with the cooling water recirculation system of outside, the Self-pressurizing agri mechanism be communicated with it is provided with outside described housing, described housing is provided with mist rabbling mechanism, described mist rabbling mechanism comprises the rotating shaft be rotationally connected with it through housing, be arranged at the drive motors be positioned at outside housing that housing inner sleeve turns the blade in rotating shaft and is connected with rotating shaft, described housing is provided with local discharge on-line monitoring device, this device comprises uhf sensor, Signal acquiring and processing module, measurement module is put in office, information transmission modular, partial discharge monitoring terminal, the output of described uhf sensor is connected with the input of Signal acquiring and processing module, the input that measurement module is put in output and the office of described Signal acquiring and processing module is connected, the input of output and information transmission modular that measurement module is put in described office is connected, described information transmission modular is connected with partial discharge monitoring terminal.
Described cooling water recirculation system is in series with screw pipe radiator.
Described rotating shaft and housing are tightly connected by oil seal mechanism.
Described Self-pressurizing agri mechanism comprises the air inlet pipe be communicated with housing, the air pump be connected with air inlet pipe, the gas tank for air pump air feed, the pressure sensor be arranged in housing, and described air pump is all connected with Programmable Logic Controller with pressure sensor.
Embodiment 3: as shown in Figure 1, 2, a kind of with SF
6and N
2mist is the gas-insulated transformer of dielectric, comprises and is filled with SF
6and N
2the seal casinghousing of mist, be arranged on iron core in housing and around the high pressure winding on iron core and low pressure winding, described iron core is wound around the copper pipe with heat-conducting layer outward, the two ends of described copper pipe pass housing and are tightly connected with it, the described insulating water inlet pipe of copper pipe free end is connected with the cooling water recirculation system of outside, the Self-pressurizing agri mechanism be communicated with it is provided with outside described housing, described housing is provided with mist rabbling mechanism, described mist rabbling mechanism comprises the rotating shaft be rotationally connected with it through housing, be arranged at the drive motors be positioned at outside housing that housing inner sleeve turns the blade in rotating shaft and is connected with rotating shaft, described housing is provided with local discharge on-line monitoring device, this device comprises uhf sensor, Signal acquiring and processing module, measurement module is put in office, information transmission modular, partial discharge monitoring terminal, the output of described uhf sensor is connected with the input of Signal acquiring and processing module, the input that measurement module is put in output and the office of described Signal acquiring and processing module is connected, the input of output and information transmission modular that measurement module is put in described office is connected, described information transmission modular is connected with partial discharge monitoring terminal.
Described cooling water recirculation system is in series with screw pipe radiator.
Described rotating shaft and housing are tightly connected by oil seal mechanism.
Described Self-pressurizing agri mechanism comprises the air inlet pipe be communicated with housing, the air pump be connected with air inlet pipe, the gas tank for air pump air feed, the pressure sensor be arranged in housing, and described air pump is all connected with Programmable Logic Controller with pressure sensor.
Described air inlet pipe is provided with unidirectional valve.
Seal casinghousing of the present utility model is filled with SF
6and N
2mist, adopts SF
6/ N
2mist is as gas-insulated transformer (the gas insulated transformer of dielectric, GIT) be a kind ofly do not fire not quick-fried environment protection type transformer, it not only overcome oil-immersed type transformer inflammable, run unsafe shortcoming, also overcome the shortcoming that dry-type transformer capacity is little.SF on the other hand
6/ N
2the insulation property of mist are better than single SF
6gas.Described iron core is wound around the copper pipe with heat-conducting layer outward, the two ends of described copper pipe pass housing and are tightly connected with it, the described insulating water inlet pipe of copper pipe free end is connected with the cooling water recirculation system of outside, the copper pipe with heat-conducting layer is wrapped in good heat dissipation effect on iron core, arrange thermal insulation layer outside copper pipe, copper pipe and iron core contact area greatly, are conducive to heat transfer on the one hand simultaneously, play insulating effect on the other hand, prevent copper pipe charged.The Self-pressurizing agri mechanism be communicated with it is provided with outside described housing, in uniform field the puncture voltage of mist and the pressure of gas substantially linear, when not changing existing transformer device structure and size, by ensureing that the pressure of the mist in housing ensures the dielectric strength of GIS, can make in housing, there is sufficient mist on the other hand.Described housing is provided with mist rabbling mechanism, described mist rabbling mechanism comprise be rotationally connected with it through housing rotating shaft, be arranged at the drive motors be positioned at outside housing that housing inner sleeve turns the blade in rotating shaft and be connected with rotating shaft, after mist is heated, easily mixing is uneven, Mixed gas insulation performance and flash-over characteristic is caused greatly to reduce, axis of rotation is driven by drive motors, it is even that rotating shaft drive vane rotates the gas and vapor permeation making housing, effectively can improve the combination property of mist.Described housing is provided with local discharge on-line monitoring device, this device comprises uhf sensor, Signal acquiring and processing module, measurement module is put in office, information transmission modular, partial discharge monitoring terminal, the output of described uhf sensor is connected with the input of Signal acquiring and processing module, the input that measurement module is put in output and the office of described Signal acquiring and processing module is connected, the input of output and information transmission modular that measurement module is put in described office is connected, described information transmission modular is connected with partial discharge monitoring terminal, by uhf sensor, the uhf electromagnetic wave signal produced during partial discharge in power transformer is detected, thus obtain the relevant information of partial discharge, realize the on-line monitoring of partial discharge, fault location and defect recognition.Therefore, transformer of the present invention can in the use in the place such as underground substation and narrow space, the urban district that densely populated, fire protection requirement is high.Partial discharge is the initial stage performance of discharging fault in GIT, and carrying out Partial Discharge Detection to GIT is the important means ensureing GIT safe operation.Local discharge signal contains abundant state of insulation information, the defect manufacturing GIT, install and produce in running can effectively reflect, generation and the order of severity thereof of insulation fault can be detected, thus propose to report to the police at the commitment of accident, in a planned way to arrange maintenance, the damage of minimizing equipment, avoids accident that the massive losses brought occurs.Described cooling water recirculation system is in series with screw pipe radiator, screw pipe radiator and the large good heat dissipation effect of contacting external air area; Described rotating shaft and housing are tightly connected by oil seal mechanism, prevent gas effusion in housing; Described Self-pressurizing agri mechanism comprises the air inlet pipe be communicated with housing, the air pump be connected with air inlet pipe, the gas tank for air pump air feed, the pressure sensor be arranged in housing, described air pump is all connected with Programmable Logic Controller with pressure sensor, the pressure values of housing is set by controller, when pressure in housing is lower than set point, the work of Controlled by Programmable Controller air pump is to gas transmission in housing, meet enough pressure, quit work when pressure in housing reaches set point air pump; Described air inlet pipe is provided with unidirectional valve, makes housing seal effective, prevents gas from overflowing.
Claims (5)
1. one kind with SF
6and N
2mist is the gas-insulated transformer of dielectric, it is characterized in that: comprise and be filled with SF
6and N
2the seal casinghousing of mist, be arranged on iron core in housing and around the high pressure winding on iron core and low pressure winding, described iron core is wound around the copper pipe with heat-conducting layer outward, the two ends of described copper pipe pass housing and are tightly connected with it, the described insulating water inlet pipe of copper pipe free end is connected with the cooling water recirculation system of outside, the Self-pressurizing agri mechanism be communicated with it is provided with outside described housing, described housing is provided with mist rabbling mechanism, described mist rabbling mechanism comprises the rotating shaft be rotationally connected with it through housing, be arranged at the drive motors be positioned at outside housing that housing inner sleeve turns the blade in rotating shaft and is connected with rotating shaft, described housing is provided with local discharge on-line monitoring device, this device comprises uhf sensor, Signal acquiring and processing module, measurement module is put in office, information transmission modular, partial discharge monitoring terminal, the output of described uhf sensor is connected with the input of Signal acquiring and processing module, the input that measurement module is put in output and the office of described Signal acquiring and processing module is connected, the input of output and information transmission modular that measurement module is put in described office is connected, described information transmission modular is connected with partial discharge monitoring terminal.
2. as claimed in claim 1 with SF
6and N
2mist is the gas-insulated transformer of dielectric, it is characterized in that: described cooling water recirculation system is in series with screw pipe radiator.
3. as claimed in claim 1 with SF
6and N
2mist is the gas-insulated transformer of dielectric, it is characterized in that: described rotating shaft and housing are tightly connected by oil seal mechanism.
4. as claimed in claim 1 with SF
6and N
2mist is the gas-insulated transformer of dielectric, it is characterized in that: described Self-pressurizing agri mechanism comprises the air inlet pipe be communicated with housing, the air pump be connected with air inlet pipe, the gas tank for air pump air feed, the pressure sensor be arranged in housing, and described air pump is all connected with Programmable Logic Controller with pressure sensor.
5. as claimed in claim 4 with SF
6and N
2mist is the gas-insulated transformer of dielectric, it is characterized in that: described air inlet pipe is provided with unidirectional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520046277.8U CN204537803U (en) | 2015-01-23 | 2015-01-23 | With SF 6and N 2mist is the gas-insulated transformer of dielectric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520046277.8U CN204537803U (en) | 2015-01-23 | 2015-01-23 | With SF 6and N 2mist is the gas-insulated transformer of dielectric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204537803U true CN204537803U (en) | 2015-08-05 |
Family
ID=53751775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520046277.8U Expired - Fee Related CN204537803U (en) | 2015-01-23 | 2015-01-23 | With SF 6and N 2mist is the gas-insulated transformer of dielectric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204537803U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595761A (en) * | 2016-12-09 | 2017-04-26 | 河南省日立信股份有限公司 | Sulfur hexafluoride and nitrogen mixed gas decomposition product detection system and detection method therefor |
| CN111880115A (en) * | 2020-09-03 | 2020-11-03 | 国家电网有限公司 | Intelligent grounding wire self-checking device |
| CN112447376A (en) * | 2020-11-24 | 2021-03-05 | 中国科学院电工研究所 | Distributed winding evaporative cooling transformer |
-
2015
- 2015-01-23 CN CN201520046277.8U patent/CN204537803U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595761A (en) * | 2016-12-09 | 2017-04-26 | 河南省日立信股份有限公司 | Sulfur hexafluoride and nitrogen mixed gas decomposition product detection system and detection method therefor |
| CN111880115A (en) * | 2020-09-03 | 2020-11-03 | 国家电网有限公司 | Intelligent grounding wire self-checking device |
| CN112447376A (en) * | 2020-11-24 | 2021-03-05 | 中国科学院电工研究所 | Distributed winding evaporative cooling transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 |