CN105221926A - The SF of electrical equipment 6automatic inflating equipment - Google Patents

The SF of electrical equipment 6automatic inflating equipment Download PDF

Info

Publication number
CN105221926A
CN105221926A CN201510589045.1A CN201510589045A CN105221926A CN 105221926 A CN105221926 A CN 105221926A CN 201510589045 A CN201510589045 A CN 201510589045A CN 105221926 A CN105221926 A CN 105221926A
Authority
CN
China
Prior art keywords
solenoid valve
pipeline
gas
electrical equipment
pressure value
Prior art date
Application number
CN201510589045.1A
Other languages
Chinese (zh)
Inventor
罗涛
孙晓凡
Original Assignee
四川菲博斯科技有限责任公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 四川菲博斯科技有限责任公司 filed Critical 四川菲博斯科技有限责任公司
Priority to CN201510589045.1A priority Critical patent/CN105221926A/en
Publication of CN105221926A publication Critical patent/CN105221926A/en

Links

Abstract

The invention provides a kind of SF of electrical equipment 6automatic inflating equipment.It comprises SF 6gas tank, eight solenoid valves, air pump, two pressure detectors, constent temperature heater and controllers.SF 6gas tank surface scribbles coating layer, first solenoid valve, second solenoid valve, air pump, the 3rd solenoid valve and the 7th solenoid valve form vacuum-pumping pipeline, first solenoid valve, the 5th solenoid valve, air pump, the 6th solenoid valve and the 4th solenoid valve form loading line, first solenoid valve and the 8th solenoid valve form aerating pipeline, and two pressure detectors detect electrical equipment and SF respectively 6atmospheric pressure value in gas tank, when the atmospheric pressure value of controller in electrical equipment drops to certain value, first connects vacuum-pumping pipeline and connects loading line again, at SF 6when atmospheric pressure value in gas tank drops to certain value, be communicated with aerating pipeline, and controller only connects one in vacuum-pumping pipeline, loading line and aerating pipeline at any time.The present invention can automatically to SF 6electrical equipment is inflated.

Description

The SF of electrical equipment 6automatic inflating equipment
Technical field
The present invention relates to SF 6gas charge and discharge technical field, particularly relates to a kind of SF of electrical equipment 6automatic inflating equipment.
Background technique
SF 6(sulphur hexafluoride) gas is a kind of nontoxic, colourless, tasteless, odorless, non-flammable synthetic gas, has the incomparable insulation characterisitic of general electrolyte and arc extinguishing ability, is therefore widely used in SF 6electrical equipment.
At SF 6in the process that electrical equipment uses, work as SF 6sF in electrical equipment 6the force value of gas drops to rating value, needs SF 6electrical equipment is inflated, otherwise can affect SF 6electrical equipment works.The way of prior art is at SF 6electrical equipment arranges pressure gauge, reads manometric force value by human at periodic intervals and judge whether force value drops to rating value.If determine force value to drop to rating value, then by inflating manually.
But most of electric power facility is all that implementation is unattended, so, SF 6when the force value of electrical equipment drops to rating value, cannot learn the very first time, cause and can not inflate in time.And if can not inflate in time, then can cause SF 6electrical equipment non-programmed halt, and then cause power grid accident, there is serious potential safety hazard.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of SF of electrical equipment 6automatic inflating equipment, can automatically to SF 6electrical equipment is inflated.
For solving the problems of the technologies described above, the technological scheme that the present invention adopts is: the SF providing a kind of electrical equipment 6automatic inflating equipment, comprises SF 6gas tank, the first solenoid valve, the second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve, the 5th solenoid valve, the 6th solenoid valve, the 7th solenoid valve, the 8th solenoid valve, air pump, the first pressure detector, the second pressure detector, constent temperature heater and controller, described controller all connects described first solenoid valve, the second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve, the 5th solenoid valve, the 6th solenoid valve, the 7th solenoid valve and the 8th solenoid valve: described SF 6gas tank is for storing high pressure SF 6gas, described SF 6the outer surface of gas tank scribbles coating layer, doped with temperature sensitive color change material and lithium-based component material in described coating layer, as described SF 6there is SF in gas tank 6during Leakage Gas, the SF of leakage 6gas and lithium-based component material generation exothermic reaction, make described coating layer heat up, and cause the variable color of temperature sensitive color change material, described SF 6gas tank connects described first solenoid valve, second solenoid valve of described first solenoid valve by connecting successively, air pump, 3rd solenoid valve is connected the inflation inlet of described electrical equipment with the 4th solenoid valve, described 5th solenoid valve is connected in parallel on the pipeline between described first solenoid valve and described second solenoid valve and the pipeline between described air pump and described 3rd solenoid valve, described 6th solenoid valve is connected in parallel on the pipeline between described second solenoid valve and described air pump and the pipeline between described 3rd solenoid valve and described 4th solenoid valve, described 7th solenoid valve is arranged on the pipeline between described 3rd solenoid valve and described 4th solenoid valve, described 8th solenoid valve is arranged on the pipeline between described first solenoid valve and described second solenoid valve, described second solenoid valve, described air pump, described 3rd solenoid valve and described 7th solenoid valve form vacuum-pumping pipeline, described first solenoid valve, described 5th solenoid valve, described air pump, described 6th solenoid valve and described 4th solenoid valve form loading line, and described first solenoid valve and described 8th solenoid valve form aerating pipeline, described constent temperature heater is arranged on the pipeline between described 4th solenoid valve and the inflation inlet of described electrical equipment, described constent temperature heater comprises switch power, solid-state relay, heating coil, temperature transducer and temperature regulate chip, install pipeline is close to by described heating coil and described temperature transducer, the input end of described switch power connects civil power, the cathode output end of described switch power is connected with the positive pole of described solid-state relay, the cathode output end of described switch power is connected with one end of described heating coil, the negative pole of described solid-state relay is connected with the other end of described heating coil, control end and the described temperature of described solid-state relay regulate the control end of chip to be connected, output terminal and the described temperature of described temperature transducer regulate the input end of chip to be connected, described first pressure detector is for detecting the SF in described electrical equipment 6gas pressure value, and by a described SF 6gas pressure value sends to described controller, described second pressure detector is for detecting described SF 6the 2nd SF in gas tank 6gas pressure value, and by described 2nd SF 6gas pressure value sends to described controller, described controller is for receiving a described SF 6gas pressure value and described 2nd SF 6gas pressure value, and at a described SF 6when gas pressure value is lower than the first preset pressure threshold value, is communicated with described vacuum-pumping pipeline and vacuumizes, and be communicated with described loading line after evacuation, at a described SF 6when gas pressure value is higher than the first preset pressure threshold value, cut off described loading line, at described 2nd SF 6when gas pressure value is lower than the second preset pressure threshold value, be communicated with described aerating pipeline, to described SF 6gas tank carries out tonifying Qi, at described 2nd SF 6when gas pressure value is higher than the second preset pressure threshold value, cut off described aerating pipeline, wherein, described second preset pressure threshold value is greater than described first preset pressure threshold value, and described controller only connects one in described vacuum-pumping pipeline, described loading line and described aerating pipeline at any time.
Be different from the situation of prior art, the invention has the beneficial effects as follows: by SF 6electrical equipment carries out SF 6gas pressure value detects, according to SF 6the size of gas pressure value carrys out Controlling solenoid valve to SF 6electrical equipment is inflated, meanwhile, to SF 6gas tank also carries out SF 6gas pressure value detects, according to SF 6the size of gas pressure value carrys out Controlling solenoid valve to SF 6gas tank carries out aerating, makes SF 6gas tank at any time can to SF 6electrical equipment is inflated, thus can automatically to SF 6electrical equipment is inflated, and ensures SF 6electrical equipment normally works.
Accompanying drawing explanation
Fig. 1 is the SF of embodiment of the present invention electrical equipment 6the structural representation of automatic inflating equipment.
Fig. 2 is the structural representation of constent temperature heater in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, be the SF of embodiment of the present invention electrical equipment 6the structural representation of automatic inflating equipment.The SF of the present embodiment 6automatic inflating equipment comprises SF 6gas tank 10, first solenoid valve 11, second solenoid valve 12, the 3rd solenoid valve 13, the 4th solenoid valve 14, the 5th solenoid valve 15, the 6th solenoid valve 16, the 7th solenoid valve 17, the 8th solenoid valve 18, air pump 19, first pressure detector 21, second pressure detector 22, constent temperature heater 23 and controller (not shown).Controller all connects the first solenoid valve 11, second solenoid valve 12, the 3rd solenoid valve 13, the 4th solenoid valve 14, the 5th solenoid valve 15, the 6th solenoid valve 16, the 7th solenoid valve 17 and the 8th solenoid valve 18.
SF 6gas tank 10 is for storing high pressure SF 6gas, SF 6the outer surface of gas tank 10 scribbles coating layer 101, doped with temperature sensitive color change material and lithium-based component material in coating layer 101, works as SF 6there is SF in gas tank 6during Leakage Gas, the SF of leakage 6gas and lithium-based component material generation exothermic reaction, make coating layer 101 heat up, and cause the variable color of temperature sensitive color change material.Due to SF 6the poor activity of gas own, is difficult to directly and other material generation metachromasias, therefore adulterate in coating layer 11 temperature sensitive color change material and lithium-based component material can judge whether generation SF indirectly 6leakage Gas.
SF 6gas tank 10 connects the first solenoid valve 11, second solenoid valve 12 of the first solenoid valve 11 by connecting successively, air pump 19, 3rd solenoid valve 13 is connected the inflation inlet of electrical equipment 100 with the 4th solenoid valve 14, 5th solenoid valve 15 is connected in parallel on the pipeline between the first solenoid valve 11 and the second solenoid valve 12 and the pipeline between air pump 19 and the 3rd solenoid valve 13, 6th solenoid valve 16 is connected in parallel on the pipeline between the second solenoid valve 12 and air pump 19 and the pipeline between the 3rd solenoid valve 13 and the 4th solenoid valve 14, 7th solenoid valve 17 is arranged on the pipeline between the 3rd solenoid valve 13 and the 4th solenoid valve 14, 8th solenoid valve 18 is arranged on the pipeline between the first solenoid valve 11 and the second solenoid valve 12.
Second solenoid valve 12, air pump 19, the 3rd solenoid valve 13 and the 7th solenoid valve 17 form vacuum-pumping pipeline, first solenoid valve 11, the 5th solenoid valve 15, air pump 19, the 6th solenoid valve 16 and the 4th solenoid valve 14 form loading line, and the first solenoid valve 11 and the 8th solenoid valve 18 form aerating pipeline.
First pressure detector 21 is for detecting the SF in electrical equipment 100 6gas pressure value, and by a SF 6gas pressure value sends to controller.Second pressure detector 22 is for detecting SF 6the 2nd SF in gas tank 10 6gas pressure value, and by the 2nd SF 6gas pressure value sends to controller.
Controller is for receiving a SF 6gas pressure value and the 2nd SF 6gas pressure value, and at a SF 6when gas pressure value is lower than the first preset pressure threshold value, is communicated with vacuum-pumping pipeline and vacuumizes, and be communicated with loading line after evacuation; At a SF 6when gas pressure value is higher than the first preset pressure threshold value, cut off loading line; At the 2nd SF 6when gas pressure value is lower than the second preset pressure threshold value, be communicated with aerating pipeline, to SF 6gas tank carries out tonifying Qi; At the 2nd SF 6when gas pressure value is higher than the second preset pressure threshold value, cut off aerating pipeline; Wherein, the second preset pressure threshold value is greater than the first preset pressure threshold value, and controller only connects one in vacuum-pumping pipeline, loading line and aerating pipeline at any time.
Constent temperature heater 23 is arranged on the pipeline between the 4th solenoid valve 14 and the inflation inlet of electrical equipment 100, see Fig. 2, is the structural representation of constent temperature heater in Fig. 1.Constent temperature heater 23 comprises switch power 231, solid-state relay 232, heating coil 233, temperature transducer 234 and temperature and regulates chip 235.Install pipeline is close to by heating coil 233 and temperature transducer 234, the input end of switch power 231 connects civil power, the cathode output end of switch power 231 is connected with the positive pole of solid-state relay 232, the cathode output end of switch power 231 is connected with one end of heating coil 233, the negative pole of solid-state relay 232 is connected with the other end of heating coil 233, control end and the temperature of solid-state relay 232 regulate the control end of chip 235 to be connected, and output terminal and the temperature of temperature transducer 234 regulate the input end of chip 235 to be connected.Temperature regulates chip 235 to send control signal according to the sensing data of temperature transducer 234 to the control end of solid-state relay 232, in order to control conducting and the shutoff of solid-state relay 232, thus controls transfer is to the electric energy of heating coil 233, realize the heating and temperature control to heating coil 233, be embodied as pipeline and isoperibol is provided, reduce SF in pipeline 6gas decomposes due to overheating the generation of the sulfur-containing compound caused.
Specifically, the default conditions of the first solenoid valve 11, second solenoid valve 12, the 3rd solenoid valve 13, the 4th solenoid valve 14, the 5th solenoid valve 15, the 6th solenoid valve 16, the 7th solenoid valve 17 and the 8th solenoid valve 18 are closedown.
As a SF 6when gas pressure value is lower than the first preset pressure threshold value, controller opens second solenoid valve the 12, the 3rd solenoid valve 13, the 7th solenoid valve 17, and booster air pump 19, thus connected vacuum-pumping pipeline, air pump 19 is bled, and gas is expelled to the outlet of the 7th solenoid valve 17, completes and vacuumize.Then, controller closes the second solenoid valve 12, the 3rd solenoid valve 13, the 7th solenoid valve 17, and opens the first solenoid valve 11, the 5th solenoid valve 15, the 6th solenoid valve 16 and the 4th solenoid valve 14, thus has connected loading line, SF 6gas tank 10 pairs of electrical equipments 100 are inflated.
As a SF 6when gas pressure value is higher than the first preset pressure threshold value, illustrate that inflation completes, controller closes the first solenoid valve 11, the 5th solenoid valve 15, the 6th solenoid valve 16 and the 4th solenoid valve 14, and closes air pump 19.
As the 2nd SF 6when gas pressure value is lower than the second preset pressure threshold value, SF is described 6the SF stored in gas tank 10 6gas is not enough, and controller opens first solenoid valve 11 and the second solenoid valve 12, second solenoid valve 12 access outside high pressure SF 6gas is to SF 6gas tank 10 carries out tonifying Qi.
As the 2nd SF 6when gas pressure value is higher than the second preset pressure threshold value, SF is described 6gas tank 10 is full of, and controller closes the first solenoid valve 11 and the second solenoid valve 12.
Because the second preset pressure threshold value is greater than the first preset pressure threshold value, SF 6residual high pressure SF in gas tank 10 6gas is enough supported to inflate electrical equipment.
By the way, the SF of the electrical equipment of the embodiment of the present invention 6automatic inflating equipment passes through SF 6electrical equipment carries out SF 6gas pressure value detects, according to SF 6the size of gas pressure value carrys out Controlling solenoid valve to SF 6electrical equipment is inflated, meanwhile, to SF 6gas tank also carries out SF 6gas pressure value detects, according to SF 6the size of gas pressure value carrys out Controlling solenoid valve to SF 6gas tank carries out aerating, makes SF 6gas tank at any time can to SF 6electrical equipment is inflated, thus can automatically to SF 6electrical equipment is inflated, and ensures SF 6electrical equipment normally works, and owing to not needing artificial participation, thus reduces cost of equipment maintenance.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (1)

1. the SF of an electrical equipment 6automatic inflating equipment, is characterized in that, comprises SF 6gas tank, the first solenoid valve, the second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve, the 5th solenoid valve, the 6th solenoid valve, the 7th solenoid valve, the 8th solenoid valve, air pump, the first pressure detector, the second pressure detector, constent temperature heater and controller, described controller all connects described first solenoid valve, the second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve, the 5th solenoid valve, the 6th solenoid valve, the 7th solenoid valve and the 8th solenoid valve:
Described SF 6gas tank is for storing high pressure SF 6gas, described SF 6the outer surface of gas tank scribbles coating layer, doped with temperature sensitive color change material and lithium-based component material in described coating layer, as described SF 6there is SF in gas tank 6during Leakage Gas, the SF of leakage 6gas and lithium-based component material generation exothermic reaction, make described coating layer heat up, and cause the variable color of temperature sensitive color change material;
Described SF 6gas tank connects described first solenoid valve, second solenoid valve of described first solenoid valve by connecting successively, air pump, 3rd solenoid valve is connected the inflation inlet of described electrical equipment with the 4th solenoid valve, described 5th solenoid valve is connected in parallel on the pipeline between described first solenoid valve and described second solenoid valve and the pipeline between described air pump and described 3rd solenoid valve, described 6th solenoid valve is connected in parallel on the pipeline between described second solenoid valve and described air pump and the pipeline between described 3rd solenoid valve and described 4th solenoid valve, described 7th solenoid valve is arranged on the pipeline between described 3rd solenoid valve and described 4th solenoid valve, described 8th solenoid valve is arranged on the pipeline between described first solenoid valve and described second solenoid valve,
Described second solenoid valve, described air pump, described 3rd solenoid valve and described 7th solenoid valve form vacuum-pumping pipeline, described first solenoid valve, described 5th solenoid valve, described air pump, described 6th solenoid valve and described 4th solenoid valve form loading line, and described first solenoid valve and described 8th solenoid valve form aerating pipeline;
Described constent temperature heater is arranged on the pipeline between described 4th solenoid valve and the inflation inlet of described electrical equipment, described constent temperature heater comprises switch power, solid-state relay, heating coil, temperature transducer and temperature regulate chip, install pipeline is close to by described heating coil and described temperature transducer, the input end of described switch power connects civil power, the cathode output end of described switch power is connected with the positive pole of described solid-state relay, the cathode output end of described switch power is connected with one end of described heating coil, the negative pole of described solid-state relay is connected with the other end of described heating coil, control end and the described temperature of described solid-state relay regulate the control end of chip to be connected, output terminal and the described temperature of described temperature transducer regulate the input end of chip to be connected,
Described first pressure detector is for detecting the SF in described electrical equipment 6gas pressure value, and by a described SF 6gas pressure value sends to described controller; Described second pressure detector is for detecting described SF 6the 2nd SF in gas tank 6gas pressure value, and by described 2nd SF 6gas pressure value sends to described controller;
Described controller is for receiving a described SF 6gas pressure value and described 2nd SF 6gas pressure value, and at a described SF 6when gas pressure value is lower than the first preset pressure threshold value, is communicated with described vacuum-pumping pipeline and vacuumizes, and be communicated with described loading line after evacuation; At a described SF 6when gas pressure value is higher than the first preset pressure threshold value, cut off described loading line; At described 2nd SF 6when gas pressure value is lower than the second preset pressure threshold value, be communicated with described aerating pipeline, to described SF 6gas tank carries out tonifying Qi; At described 2nd SF 6when gas pressure value is higher than the second preset pressure threshold value, cut off described aerating pipeline;
Wherein, described second preset pressure threshold value is greater than described first preset pressure threshold value, and described controller only connects one in described vacuum-pumping pipeline, described loading line and described aerating pipeline at any time.
CN201510589045.1A 2015-09-16 2015-09-16 The SF of electrical equipment 6automatic inflating equipment CN105221926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510589045.1A CN105221926A (en) 2015-09-16 2015-09-16 The SF of electrical equipment 6automatic inflating equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510589045.1A CN105221926A (en) 2015-09-16 2015-09-16 The SF of electrical equipment 6automatic inflating equipment

Publications (1)

Publication Number Publication Date
CN105221926A true CN105221926A (en) 2016-01-06

Family

ID=54991059

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510589045.1A CN105221926A (en) 2015-09-16 2015-09-16 The SF of electrical equipment 6automatic inflating equipment

Country Status (1)

Country Link
CN (1) CN105221926A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871833A (en) * 2009-04-23 2010-10-27 Abb研究有限公司 Sf6 gas leakage detection method and material
CN202048356U (en) * 2010-12-13 2011-11-23 山东电力集团公司临沂供电公司 Portable multipurpose sulfur hexafluoride electric equipment air charging device
CN102788242A (en) * 2012-08-23 2012-11-21 昆山宝宏机械有限公司 Air storage tank capable of automatically aerating
CN204005218U (en) * 2014-08-27 2014-12-10 山东电力设备有限公司 Transformer body store status on-line monitoring system
CN104390132A (en) * 2014-10-16 2015-03-04 国家电网公司 Multifunctional SF6 steel cylinder aerating apparatus
CN104534274A (en) * 2015-01-19 2015-04-22 国家电网公司 SF6 automatic air inflation device and automatic air inflation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871833A (en) * 2009-04-23 2010-10-27 Abb研究有限公司 Sf6 gas leakage detection method and material
CN202048356U (en) * 2010-12-13 2011-11-23 山东电力集团公司临沂供电公司 Portable multipurpose sulfur hexafluoride electric equipment air charging device
CN102788242A (en) * 2012-08-23 2012-11-21 昆山宝宏机械有限公司 Air storage tank capable of automatically aerating
CN204005218U (en) * 2014-08-27 2014-12-10 山东电力设备有限公司 Transformer body store status on-line monitoring system
CN104390132A (en) * 2014-10-16 2015-03-04 国家电网公司 Multifunctional SF6 steel cylinder aerating apparatus
CN104534274A (en) * 2015-01-19 2015-04-22 国家电网公司 SF6 automatic air inflation device and automatic air inflation method thereof

Similar Documents

Publication Publication Date Title
CN105137336A (en) Diagnostic circuit and diagnostic method for detecting electric vehicle high-voltage relay fault
CN201355301Y (en) Air tightness detection equipment
CN201285340Y (en) Air tightness detection device
CN103486440B (en) Connecting device, vacuum pumping method and inflation method are reclaimed in rapid vacuumizing and inflation
CN205759224U (en) There is the battery box system of automatic fire extinguisher
CN102527200A (en) System and method for realizing gas dehumidification and purification
CN103697324B (en) Electric equipment intelligent SF6 aerating device
CN104595199A (en) Vacuum water diversion device capable of automatically supplementing water
CN203730058U (en) Coal-mine gas extraction control system
CN104352344A (en) Improved limb-pressurization physical therapy instrument
CN204386833U (en) A kind of energy-saving air compressor
CN207039162U (en) A kind of cable seal of tube stop water
CN108594916A (en) A kind of making-up air device and supplementing method for air of SF6 electrical equipments
CN204420562U (en) A kind of SF6 self-filler
CN203752307U (en) Intelligentized steam curing system
CN202486569U (en) Explosion-proof device for spraying robot
CN201838959U (en) Anti-condensation drying system of isolated-phase enclosed busbar
CN205198964U (en) Subassembly is restrainted to aqueous vapor ball
CN104075106A (en) Control method and control device of nitrogen filling and pressure maintaining vacuumizing device
CN104534274A (en) SF6 automatic air inflation device and automatic air inflation method thereof
CN204740194U (en) Super high voltage transmission lines insulator ice flashes journey and influence factor studies device thereof
CN204525493U (en) Ball-type mechanical hand
CN104453985A (en) Water-sealing fire-retarding explosion-venting device and control method thereof
CN202660238U (en) Stabilivolt feed liquid device of low temperature pump and cold trap
CN204419656U (en) A kind of control box of Double Speed Fan

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20160106

RJ01 Rejection of invention patent application after publication