CN103745806A - Main transformer breathing moisture absorbing device with intelligent switching function and use method thereof - Google Patents
Main transformer breathing moisture absorbing device with intelligent switching function and use method thereof Download PDFInfo
- Publication number
- CN103745806A CN103745806A CN201410004596.2A CN201410004596A CN103745806A CN 103745806 A CN103745806 A CN 103745806A CN 201410004596 A CN201410004596 A CN 201410004596A CN 103745806 A CN103745806 A CN 103745806A
- Authority
- CN
- China
- Prior art keywords
- silica gel
- main transformer
- tank
- standby
- work
- 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.)
- Granted
Links
Images
Landscapes
- Transformer Cooling (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to a main transformer breathing moisture absorbing device with an intelligent switching function and a use method thereof. The device comprises a tee pipe, and a main pipe of the tee pipe is connected with a main transformer breathing pipe. A work electromagnetic valve is arranged on one branch pipe and connected with a work silicon gel tank, and a standby electromagnetic valve is arranged on the other branch pipe and connected with a standby silicon gel tank. Allochroic silicon gel is filled in the work silicon gel tank and the standby silicon gel tank. An automatic wavelength detector is arranged beside the work silicon gel tank, and an alarm is further arranged beside the work silicon gel tank. The work electromagnetic valve, the standby electromagnetic valve, the automatic wavelength detector and the alarm are all electrically connected with a control module. The device can switch to the standby silicon gel tank automatically according to change of allochroic silicon gel colors in the work silicon gel tank and alarm to remind working staff to replace the allochroic silicon gel timely. Main transformer breathing air flow sudden change is effectively prevented, a main transformer gas relay protection device is not required to be exited, moisture air is prevented from being inhaled, and safety operation of the main transformer is guaranteed.
Description
Technical field
The present invention relates to a kind of main transformer with intelligent handoff functionality and breathe moisture absorption apparatus and using method thereof.
Background technology
Main transformer is in operation, and can produce respiration by respiratory siphon and outside air, and as breathed dehydrating breather without installing on respiratory siphon, main transformer directly sucks extraneous humid air, more easily makes main transformer make moist especially in rainy day and high humidity weather.Tradition main transformer is breathed dehydrating breather when its moisture absorption filler discolour silica gel moisture absorption is saturated; cannot automatically switch and report to the police; need could notify professional to come to change after staff's field observation; and main transformer respiratory siphon directly communicates with ambient atmosphere in Renewal process; can cause that main transformer respiratory air flow changes; may cause the catastrophe failure of the heavy Buchholz relay malfunction of main transformer; therefore traditional main transformer is breathed after dehydrating breather must exit a heavy main transformer watt protective device when changing adsorbent and just can be carried out, and reaches 4-5 hour disengaging time.A heavy watt protection is that main transformer moves one of most important protective device; when main transformer is when the fault of oil stream or gas shock occurs to produce contingency; heavy Buchholz relay can move; make main transformer switch tripping operation; the further expansion of Accident prevention, now heavy watt relay, as exited, can not cut off main transformer switch; cause fault spread, even cause the serious consequence of main transformer blast.Moving back heavy watt protective device need be after the chief engineer of unit one belongs to approval, is operated work consuming, consuming time and expend a lot of by operations staff's transformer station's master-control room of making a special trip to a certain place.Tradition main transformer is breathed another shortcoming of dehydrating breather, when changing discolour silica gel, unloads after silica gel tank, and main transformer respiratory air flow directly communicates with ambient atmosphere, and moisture, moisture are easily breathed in connecting leg intrusion main transformer oil by main transformer.
Summary of the invention
The problem that the present invention is directed to above-mentioned prior art existence is made improvement; be that technical problem to be solved by this invention is to provide a kind of breathing moisture absorption apparatus of the main transformer with intelligent handoff functionality and using method thereof; solved traditional main transformer and breathed that dehydrating breather cannot automatically switch and need to weigh when changing and watt exit protection and have the problems such as potential safety hazard, overcome main transformer respiratory siphon while unloading silica gel tank and directly communicated and make main transformer respiratory air flow that direct extraneous moisture moisture suction is caused to the defect of making moist with ambient atmosphere.
In order to solve the problems of the technologies described above, technical scheme one of the present invention is: a kind of main transformer with intelligent handoff functionality is breathed moisture absorption apparatus, comprise three-way pipe, the supervisor of described three-way pipe is connected with main transformer respiratory siphon, working electromagnet valve is installed on one branched pipe of described three-way pipe and is connected with work silica gel tank, standby electromagnetically operated valve is installed on another branched pipe of described three-way pipe and is connected with standby silica gel tank, in described work silica gel tank and standby silica gel tank, be all filled with the discolour silica gel as hygroscopic material, the side of described work silica gel tank is outside equipped with the automatic wavelength detecting of the interior discolour silica gel of its probe receiving tank at the color wavelength variable signal at setting height place, the side of described work silica gel tank is also provided with alarm outward, described working electromagnet valve, standby electromagnetically operated valve, automatically wavelength detecting and alarm are all electrically connected at control module.
Further, described working electromagnet valve is normally open, and described standby electromagnetically operated valve is normally off.
Further, 3/4 At The Height of discolour silica gel height overall in the alignment probe work silica gel tank of described automatic wavelength detecting.
Further, described automatic wavelength detecting is installed on main transformer body.
Further, described main transformer body top is provided with conservator, on the tube connector of described conservator and main transformer main body, Buchholz relay is installed, and described main transformer body bottom is provided with fuel outlet valve, and described conservator top is connected with main transformer respiratory siphon.
Further, described work silica gel tank and standby silica gel tank include to be deposited the tank body of discolour silica gel and is threaded connection in tank body lower end and in order to deposit the lubricating cup of transformer oil, the bottom of described tank body is provided with a pneumostome, in described pneumostome, be provided with a filter screen, the transformer oil in the pneumostome insertion lubricating cup of described tank base is to form oil sealing.
In order to solve the problems of the technologies described above, technical scheme two of the present invention is: a kind of main transformer with intelligent handoff functionality is breathed the using method of moisture absorption apparatus: when in work silica gel tank during discolour silica gel moisture absorption, the blueness of its color when being dried changes pink gradually into, along with the increase of silica gel moisture absorption degree, changing peach silica gel height into constantly rises, when rising to the setting height place of discolour silica gel in silica gel tank, when the probe that is arranged on the automatic wavelength detecting on this height detects pink silica gel, control module is first opened standby electromagnetically operated valve, connect being communicated with of standby silica gel tank and main transformer respiratory siphon, after close working electromagnet valve, cut-out work silica gel tank is communicated with main transformer respiratory siphon, meanwhile, control module also starts alarm equipment alarm, notifies staff the discolour silica gel losing efficacy in silica gel tank that more changes jobs, and in staff has changed work silica gel tank after discolour silica gel, then opens working electromagnet valve, closes standby electromagnetically operated valve.
Compared with prior art, the present invention has following beneficial effect: this device technique advanced person, reliable operation, can be when the moisture absorption filler of working in silica gel tank loses efficacy, according to the variation of discolour silica gel color wavelength, automatically switch to the discolour silica gel that standby silica gel tank warning reminding staff more change jobs in silica gel tank in time, in the hygroscopic agent process of changing in silica gel tank, can effectively prevent the sudden change of main transformer respiratory air flow, therefore in replacing silica gel process, without being weighed to a watt protective device, exits main transformer, change discolour silica gel process and can also prevent that main transformer respiratory siphon from directly communicating with atmosphere and sucking moisture, thereby ensure main transformer safe operation, compared with breathing dehydrating breather with traditional main transformer, there is huge advantage.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is silica gel tank respiratory schematic diagram.
Fig. 3 is that tank body separates schematic diagram with lubricating cup.
Fig. 4 is the control principle drawing of the embodiment of the present invention.
Fig. 5 is control module wavelength settings automatic control loop figure.
Fig. 6 is control module wavelength settings control main circuit diagram.
In figure: 1-work silica gel tank, the standby silica gel tank of 2-, 3-working electromagnet valve, the standby electromagnetically operated valve of 4-, the automatic wavelength detecting of 5-, 6-sense radiation, 7-three-way pipe, 8-main transformer respiratory siphon, 9-conservator, 10-tube connector, 11-Buchholz relay, 12-fuel outlet valve, 13-main transformer main body, 14-tank body, 15-discolour silica gel, 16-lubricating cup, 17-transformer oil, 18-air bubble, 19-thread jacket, 20-thread, 21-filter screen, 22-pneumostome; DJ1-wavelength arranges limit relay, K1-switch, K4-linked switch, C1-working electromagnet valve, the standby electromagnetically operated valve of C2-, C3-alarm, FU-fuse, N-ground connection, ∽ 220V-alternating current 220V.
Embodiment
As shown in Fig. 1 ~ 6, a kind of main transformer with intelligent handoff functionality is breathed moisture absorption apparatus, comprise three-way pipe 7, the supervisor of described three-way pipe 7 is connected with main transformer respiratory siphon 8, working electromagnet valve 3 is installed on one branched pipe of described three-way pipe 7 and is connected with work silica gel tank 1, standby electromagnetically operated valve 4 is installed on another branched pipe of described three-way pipe 7 and is connected with standby silica gel tank 2, the interior discolour silica gel 15 being all filled with as hygroscopic material of described work silica gel tank 1 and standby silica gel tank 2, the side of described work silica gel tank 1 is outside equipped with the automatic wavelength detecting 5 of the interior discolour silica gel 15 of its probe receiving tank at the color wavelength variable signal at setting height place, the side of described work silica gel tank 1 is also provided with alarm outward, described working electromagnet valve 3, standby electromagnetically operated valve 4, automatically wavelength detecting 5 and alarm are all electrically connected at control module, by control module, automatically controlled.
In the present embodiment, described automatic wavelength detecting 5 is installed on main transformer body, 3/4 At The Height of alignment probe work silica gel tank 1 interior discolour silica gel 15 height overalls of described automatic wavelength detecting 5.Described main transformer body top is provided with conservator 9, on the tube connector 10 of described conservator 9 and main transformer main body 13, Buchholz relay 11 is installed, and described main transformer body bottom is provided with fuel outlet valve 12, and described conservator 9 tops are connected with main transformer respiratory siphon 8.
In the present embodiment, described working electromagnet valve 3 is normally open, normal work silica gel tank 1 in service communicates with main transformer respiratory siphon 8, conservator 9 is breathed by work silica gel tank 1 and ambient atmosphere, discolour silica gel 15 in work silica gel tank 1 can absorb contained humidity in main transformer respiratory air flow, thereby guarantees the dry of main transformer respiratory air flow.Saturated when discolour silica gel 15 moisture absorptions in work silica gel tank 1, by automatic wavelength detecting 5, wavelength change signal detected and be sent to control module, by control module, automatically control and close working electromagnet valve 3.
In the present embodiment, described standby electromagnetically operated valve 4 is normally off, and normal standby silica gel tank 2 in service is obstructed with main transformer respiratory siphon 8.Before working electromagnet valve 3 is closed in control module control, first open standby electromagnetically operated valve 4, connect standby silica gel tank 2 and main transformer respiratory siphon 8.
In the present embodiment, described alarm is saturated in discolour silica gel 15 moisture absorptions, during working electromagnet valve 3 closing motion, by control module, automatically controlled and send chimes of doom, the discolour silica gel 15 of notifying staff to come as early as possible more to change jobs in silica gel tank 1.
In the present embodiment, described work silica gel tank 1 and standby silica gel tank 2 include to be deposited the tank body 14 of discolour silica gel 15 and is threaded connection in tank body 14 lower ends and in order to deposit the lubricating cup 16 of transformer oil 17, the bottom of described tank body 14 is provided with a pneumostome 22, in described pneumostome 22, be provided with a filter screen 21, the pneumostome 22 of described tank body 14 bottoms inserts and fills in the lubricating cup 16 of transformer oil 17, and the oil in lubricating cup 16 forms oil sealing.
In the present embodiment, the extraneous air-flow that main transformer sucks is by sucking in lubricating cup 16 in lubricating cup 16 and tank body 14 screw thread teeth spaces, suck air-flow and by oil sealing, enter pneumostome 22 in lubricating cup 16, now sucking the part steam of carrying secretly in air-flow is stopped by the oil in lubricating cup 16 and absorbs a part of, the inhaling air pneumostome 22 of flowing through, rise by after the hygroscopic agent discolour silica gel 15 in tank through main transformer respiratory siphon 8 to conservator 9, when the discolour silica gel 15 by tank, sucking most moisture of carrying secretly of air-flow agent discolour silica gel 15 that is dried adsorbs, making main transformer suck air-flow keeps dry, guarantee that main transformer does not make moist, the air-flow that main transformer is breathed out is oppositely breathed out with suction air-flow, in Fig. 2, to upward arrow, represent that main transformer conservator 9 sucks air-flow, arrow represents main transformer conservator 9 exhaled air flows downwards.
In the present embodiment, should be as follows with the using method of the main transformer breathing moisture absorption apparatus of intelligent handoff functionality: when 1 interior discolour silica gel 15 moisture absorption of work silica gel tank, the blueness (wavelength 460nm) of its color when being dried changes pink (wavelength 620nm) gradually into, along with the increase of silica gel moisture absorption degree, changing peach silica gel height into constantly rises, when rise to discolour silica gel 15 total heights in silica gel tank 3/4 time, when the probe that is arranged on the automatic wavelength detecting 5 on this height detects the pink silica gel of 620nm wavelength (operating value), be that automatic wavelength detecting 5 detects the color wavelength variable signal of discolour silica gel 15 and is sent to control module, control module is first opened standby electromagnetically operated valve 4, connect being communicated with of standby silica gel tank 2 and main transformer respiratory siphon 8, after close working electromagnet valve 3, cut-out work silica gel tank 1 is communicated with main transformer respiratory siphon 8, meanwhile, control module also starts alarm equipment alarm, the discolour silica gel 15 of notifying staff more to change jobs the 1 interior inefficacy of silica gel tank, and when staff has changed after the interior discolour silica gel 15 of work silica gel tank 1, then manual unlocking working electromagnet valve 3, close standby electromagnetically operated valve 4, as need, change the interior discolour silica gel 15 of standby silica gel tank 2, can then carry out.
The present invention is changing in silica gel tank in silica gel overall process; main transformer respiratory siphon 8 does not directly communicate with ambient atmosphere all the time; keep respiratory air flow dry; prevented the sudden change of extraneous air-flow simultaneously and affect the weight watt protective device action of main transformer Buchholz relay 11, when therefore the present invention changes discolour silica gel 15, had without the huge advantage of moving back main transformer weight watt protective device.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (7)
1. the main transformer with intelligent handoff functionality is breathed moisture absorption apparatus, it is characterized in that: comprise three-way pipe, the supervisor of described three-way pipe is connected with main transformer respiratory siphon, working electromagnet valve is installed on one branched pipe of described three-way pipe and is connected with work silica gel tank, standby electromagnetically operated valve is installed on another branched pipe of described three-way pipe and is connected with standby silica gel tank, in described work silica gel tank and standby silica gel tank, be all filled with the discolour silica gel as hygroscopic material, the side of described work silica gel tank is outside equipped with the automatic wavelength detecting of the interior discolour silica gel of its probe receiving tank at the color wavelength variable signal at setting height place, the side of described work silica gel tank is also provided with alarm outward, described working electromagnet valve, standby electromagnetically operated valve, automatically wavelength detecting and alarm are all electrically connected at control module.
2. the main transformer with intelligent handoff functionality according to claim 1 is breathed moisture absorption apparatus, it is characterized in that: described working electromagnet valve is normally open, and described standby electromagnetically operated valve is normally off.
3. the main transformer with intelligent handoff functionality according to claim 1 is breathed moisture absorption apparatus, it is characterized in that: 3/4 At The Height of discolour silica gel height overall in the alignment probe work silica gel tank of described automatic wavelength detecting.
4. according to the main transformer with intelligent handoff functionality described in claim 1 or 3, breathe moisture absorption apparatus, it is characterized in that: described automatic wavelength detecting is installed on main transformer body.
5. the main transformer with intelligent handoff functionality according to claim 4 is breathed moisture absorption apparatus, it is characterized in that: described main transformer body top is provided with conservator, on the tube connector of described conservator and main transformer main body, Buchholz relay is installed, described main transformer body bottom is provided with fuel outlet valve, and described conservator top is connected with main transformer respiratory siphon.
6. the main transformer with intelligent handoff functionality according to claim 1 is breathed moisture absorption apparatus, it is characterized in that: described work silica gel tank and standby silica gel tank include to be deposited the tank body of discolour silica gel and is threaded connection in tank body lower end and in order to deposit the lubricating cup of transformer oil, the bottom of described tank body is provided with a pneumostome, in described pneumostome, be provided with a filter screen, the transformer oil in the pneumostome insertion lubricating cup of described tank base is to form oil sealing.
7. according to the main transformer with intelligent handoff functionality described in any one in claim 1-6, breathe the using method of moisture absorption apparatus, it is characterized in that: when in work silica gel tank during discolour silica gel moisture absorption, the blueness of its color when being dried changes pink gradually into, along with the increase of silica gel moisture absorption degree, changing peach silica gel height into constantly rises, when rising to the setting height place of discolour silica gel in silica gel tank, when the probe that is arranged on the automatic wavelength detecting on this height detects pink silica gel, control module is first opened standby electromagnetically operated valve, connect being communicated with of standby silica gel tank and main transformer respiratory siphon, after close working electromagnet valve, cut-out work silica gel tank is communicated with main transformer respiratory siphon, meanwhile, control module also starts alarm equipment alarm, notifies staff the discolour silica gel losing efficacy in silica gel tank that more changes jobs, and in staff has changed work silica gel tank after discolour silica gel, then opens working electromagnet valve, closes standby electromagnetically operated valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410004596.2A CN103745806B (en) | 2014-01-06 | 2014-01-06 | A kind of main transformer with intelligent handoff functionality breathes moisture absorption apparatus and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410004596.2A CN103745806B (en) | 2014-01-06 | 2014-01-06 | A kind of main transformer with intelligent handoff functionality breathes moisture absorption apparatus and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103745806A true CN103745806A (en) | 2014-04-23 |
| CN103745806B CN103745806B (en) | 2016-01-06 |
Family
ID=50502819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410004596.2A Active CN103745806B (en) | 2014-01-06 | 2014-01-06 | A kind of main transformer with intelligent handoff functionality breathes moisture absorption apparatus and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103745806B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104036926A (en) * | 2014-07-01 | 2014-09-10 | 国家电网公司 | Main transformation respirator with online regeneration function and use method |
| CN104235477A (en) * | 2014-09-04 | 2014-12-24 | 天津百利展发集团有限公司 | Intelligent under-pressure line change valve |
| CN104715898A (en) * | 2015-01-08 | 2015-06-17 | 国家电网公司 | On-line regenerating main transformer breather with honeycomb structure and heating function and method |
| CN104882252A (en) * | 2015-06-12 | 2015-09-02 | 国网山西省电力公司电力科学研究院 | Intelligent moisture absorption device of oil-immersed power transformer |
| CN105301065A (en) * | 2014-05-31 | 2016-02-03 | 国家电网公司 | On-line monitoring device of power transformer respirator |
| CN105355379A (en) * | 2015-11-25 | 2016-02-24 | 国网河南新野县供电公司 | Breathing device and method for oil-immersed distribution transformer |
| CN107256787A (en) * | 2017-07-25 | 2017-10-17 | 国网福建省电力有限公司 | A kind of dual transformer Buchholz relay device and application method for exempting from dismounting experiment |
| CN107624195A (en) * | 2015-03-19 | 2018-01-23 | Abb瑞士股份有限公司 | Iknsulating liquid expansion assembly |
| WO2022205503A1 (en) * | 2021-03-29 | 2022-10-06 | 浙江尔格科技股份有限公司 | Moisture absorption system of oil-filled apparatus, and operation control method for moisture absorption system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB920051A (en) * | 1961-11-09 | 1963-03-06 | Licentia Gmbh | Improvements in and relating to electric apparatus |
| CN1715842A (en) * | 2004-03-31 | 2006-01-04 | 株式会社米姿托约 | Improved wavelength detector |
| CN101572168A (en) * | 2009-03-13 | 2009-11-04 | 中国西电电气股份有限公司 | Oil conservator moisture absorber with convenient silica gel replacement |
| CN203799794U (en) * | 2014-01-06 | 2014-08-27 | 国家电网公司 | Main transformer breathable moisture absorption device with intelligent switching function |
-
2014
- 2014-01-06 CN CN201410004596.2A patent/CN103745806B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB920051A (en) * | 1961-11-09 | 1963-03-06 | Licentia Gmbh | Improvements in and relating to electric apparatus |
| CN1715842A (en) * | 2004-03-31 | 2006-01-04 | 株式会社米姿托约 | Improved wavelength detector |
| CN101572168A (en) * | 2009-03-13 | 2009-11-04 | 中国西电电气股份有限公司 | Oil conservator moisture absorber with convenient silica gel replacement |
| CN203799794U (en) * | 2014-01-06 | 2014-08-27 | 国家电网公司 | Main transformer breathable moisture absorption device with intelligent switching function |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301065A (en) * | 2014-05-31 | 2016-02-03 | 国家电网公司 | On-line monitoring device of power transformer respirator |
| CN104036926A (en) * | 2014-07-01 | 2014-09-10 | 国家电网公司 | Main transformation respirator with online regeneration function and use method |
| CN104235477A (en) * | 2014-09-04 | 2014-12-24 | 天津百利展发集团有限公司 | Intelligent under-pressure line change valve |
| CN104235477B (en) * | 2014-09-04 | 2016-05-25 | 天津百利展发集团有限公司 | The valve of intelligence thread-changing with pressure |
| CN104715898A (en) * | 2015-01-08 | 2015-06-17 | 国家电网公司 | On-line regenerating main transformer breather with honeycomb structure and heating function and method |
| CN107624195A (en) * | 2015-03-19 | 2018-01-23 | Abb瑞士股份有限公司 | Iknsulating liquid expansion assembly |
| CN107624195B (en) * | 2015-03-19 | 2019-03-29 | Abb瑞士股份有限公司 | Insulating liquid expansion assembly |
| CN104882252A (en) * | 2015-06-12 | 2015-09-02 | 国网山西省电力公司电力科学研究院 | Intelligent moisture absorption device of oil-immersed power transformer |
| CN105355379A (en) * | 2015-11-25 | 2016-02-24 | 国网河南新野县供电公司 | Breathing device and method for oil-immersed distribution transformer |
| CN105355379B (en) * | 2015-11-25 | 2017-07-14 | 国网河南新野县供电公司 | A kind of oil immersion-type distribution transformer breathing equipment and method |
| CN107256787A (en) * | 2017-07-25 | 2017-10-17 | 国网福建省电力有限公司 | A kind of dual transformer Buchholz relay device and application method for exempting from dismounting experiment |
| WO2022205503A1 (en) * | 2021-03-29 | 2022-10-06 | 浙江尔格科技股份有限公司 | Moisture absorption system of oil-filled apparatus, and operation control method for moisture absorption system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103745806B (en) | 2016-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103745806A (en) | Main transformer breathing moisture absorbing device with intelligent switching function and use method thereof | |
| CN103745808B (en) | With respirator and the control method of Wireless remote control main transformer free of replacement hygroscopic agent | |
| CN103745807B (en) | Respirator and the control method of main transformer free of replacement hygroscopic agent is controlled with wired remote | |
| CN103745805A (en) | Main transformer breather not requiring replacing moisture absorbent and application method thereof | |
| CN106373726B (en) | A kind of temperature control switching maintenance-free moisture absorber of two drying chambers longitudinal arrangement | |
| CN203799793U (en) | Adsorbent-replacing-free breather with wired remote control main transformer | |
| CN203799794U (en) | Main transformer breathable moisture absorption device with intelligent switching function | |
| CN104036927A (en) | Main transformation respirator with photovoltaic conversion online regeneration function and use method | |
| CN107731474A (en) | The Novel respirator and its automatic alarm prompt system of a kind of transformer | |
| CN203491052U (en) | Main transformer breath moisture absorbing device free of quitting heavy gas protection | |
| CN105719796A (en) | Silica gel and oil level online monitoring alarm and monitoring method for transformer breather | |
| CN104036926A (en) | Main transformation respirator with online regeneration function and use method | |
| CN203799797U (en) | Main transformer breathing device free of replacement of moisture absorbents | |
| CN104384165B (en) | A kind of transformer on-load voltage regulating shunting switch automatic exhaust device | |
| CN207501362U (en) | A kind of man-defend ventilation system | |
| CN212011647U (en) | Automatic indoor switch board of fire control | |
| CN104658228A (en) | Main barospirator with wireless remote-control infrared heating function and working method of main barospirator | |
| CN201643505U (en) | Deluge valve with diaphragm valve flap | |
| CN203966740U (en) | A kind of main transformer respirator with photovoltaic conversion on-line regeneration function | |
| CN115172017B (en) | Maintenance-free moisture absorber, electrical equipment and respiration state monitoring method | |
| CN104715898B (en) | A kind of on-line regeneration main transformer breathing equipment with honeycomb texture heating function and method | |
| CN203799796U (en) | Main transformer breathable moisture absorption device with online detection and alarm functions | |
| CN105355381A (en) | Main transformer respirator free of moisture absorbent replacement and use method thereof | |
| CN104517706B (en) | Main transformer regeneration breather with frequency conversion control and bidirectional microwave heating functions and use method of breather | |
| CN209168889U (en) | A kind of transformer Maintenance-free respirator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |