CN113067259B - Dehumidification method and device for distribution automation ring main unit - Google Patents
Dehumidification method and device for distribution automation ring main unit Download PDFInfo
- Publication number
- CN113067259B CN113067259B CN202110522764.7A CN202110522764A CN113067259B CN 113067259 B CN113067259 B CN 113067259B CN 202110522764 A CN202110522764 A CN 202110522764A CN 113067259 B CN113067259 B CN 113067259B
- Authority
- CN
- China
- Prior art keywords
- dehumidification
- channel
- dehumidifying
- adsorption
- shell
- 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.)
- Active
Links
- 238000007791 dehumidification Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000001179 sorption measurement Methods 0.000 claims abstract description 32
- 239000002274 desiccant Substances 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 238000005192 partition Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 230000008929 regeneration Effects 0.000 claims abstract description 13
- 238000011069 regeneration method Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 230000001172 regenerating effect Effects 0.000 claims description 7
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a dehumidification method and device for a distribution automation ring main unit, comprising a box body, a middle partition plate, a dehumidification channel, a regeneration channel, an adsorption dehumidification device, a cooling dehumidification device, a water collecting bucket, a water collecting tank, a rotating shaft, a rotating gear, a lifting motor and a sealing shell, wherein the adsorption dehumidification device comprises a dehumidification shell, a limiting plate, a lifting rack, an air vent and a desiccant filling area, and the cooling dehumidification device comprises an air inlet fan, an air outlet fan, a refrigeration sheet, cooling fins and heating fins. The invention belongs to the technical field of power system power distribution, and particularly provides a power distribution automation ring main unit dehumidification method and device with thorough dehumidification, high energy utilization rate and high operation automation degree.
Description
Technical Field
The invention belongs to the technical field of power system power distribution, and particularly relates to a dehumidification method and device for a power distribution automation ring main unit.
Background
The intelligent distribution network is one of key links of the intelligent power grid. Typically 10kV and below are part of the distribution network (20 kV in some areas), which is the part of the whole power system directly connected to the scattered users. The intelligent distribution network system integrates information of online data and offline data of a distribution network, data of the distribution network and user data, a power grid structure and a geographic graph by utilizing modern electronic technology, communication technology, computer and network technology, and realizes the intellectualization of monitoring, protection, control, electricity consumption and distribution management under the condition of normal operation and accidents of the distribution system.
As an important component of intelligent distribution network, in recent years, distribution automation engineering construction is in a rapid pushing state, and distribution automation systems have been shifted from engineering test points to comprehensive implementation stages. The ring main unit is used as important equipment of the power distribution network, and plays an important role in connecting the power distribution ring network and distributing electric energy. Because the looped netowrk cabinet often installs on ground to link to each other with cable pit, consequently the interior air humidity of cabinet is great. In overcast and rainy weather (especially in spring), condensation and even water accumulation occur in the cabinet, and short circuit of elements is easily caused, so that internal elements are damaged.
With the application of the distribution automation system, secondary equipment such as DTU is added in the ring main unit, and higher requirements are put forward on the running environment in the ring main unit, in particular to the air humidity in the ring main unit. When the air humidity in the cabinet is high, the operation reliability of secondary equipment in the cabinet can be seriously affected, and even the secondary equipment is damaged; should the cabinet in the air humidity great, cause the unusual condition of distribution automation looped netowrk cabinet in secondary equipment operation many times.
Disclosure of Invention
Aiming at the situation, the invention provides the dehumidification method and the device for the distribution automation ring main unit, which have the advantages of thorough dehumidification, high energy utilization rate and high operation automation degree, in order to overcome the defects of the prior art.
The technical scheme adopted by the invention is as follows: the invention relates to a distribution automation ring main unit dehumidification device which comprises a box body, a middle partition plate, a dehumidification channel, a regeneration channel, an adsorption dehumidification device, a cooling dehumidification device, a water collecting bucket, a water collecting tank, a rotating shaft, a rotating gear, a lifting motor and a sealing shell.
Further, adsorb dehydrating unit includes dehumidification shell, limiting plate, lifting rack, bleeder vent and drier filling area, the dehumidification shell runs through the middle partition board setting, the limiting plate is located dehumidification shell one end, lifting rack locates dehumidification shell one side, the bleeder vent is located the dehumidification shell in the perpendicular both sides of middle partition board, drier filling area locates in the dehumidification shell.
Further, the cooling and dehumidifying device comprises an air inlet fan, an air outlet fan, a refrigerating sheet, cooling fins and heating fins, wherein the air inlet fan is arranged at one end, far away from the adsorption and dehumidifying device, in the dehumidifying channel, the air outlet fan is arranged at one end, far away from the adsorption and dehumidifying device, in the regenerating channel, the refrigerating sheet penetrates through the middle partition plate, the cooling fins are arranged at one side, facing the dehumidifying channel, of the refrigerating sheet, and the heating fins are arranged at one side, facing the regenerating channel, of the refrigerating sheet.
Further, a sealing strip is arranged on one side, away from the water collection tank, of the box body, and the sealing strip is arranged between the two lifting racks.
The invention also discloses a dehumidification method of the distribution automation ring main unit, which comprises the following specific steps:
s1: placing a drying agent into a drying agent filling area, and then placing an adsorption dehumidifying device into the box body;
s2: perforating the installation part of the distribution automation ring main unit, arranging a sealing shell to penetrate through the wall of the unit, and enabling one end of a water collection tank to be inward;
s3: starting the refrigerating sheet until the water drops at the air inlet fan are condensed, and starting the air inlet fan;
s4: starting the lifting motor after the plurality of drying agents are adsorbed and saturated, so that the adsorption and dehumidification device in the dehumidification channel slides to the regeneration channel, and the adsorption and dehumidification device in the regeneration channel slides to the dehumidification channel;
s5: starting an air outlet fan to enable the hot air to regenerate the drying agent;
s6: repeating S4 and S5 again after the desiccant in the dehumidification channel is saturated in adsorption;
s7: if the water in the water collecting tank is full, the water collecting tank can be unscrewed and poured out.
The beneficial effects obtained by the invention by adopting the structure are as follows: according to the power distribution automation ring main unit dehumidification method and device, dehumidification is thorough due to double dehumidification, the energy utilization rate is high due to the arrangement of the regeneration channel, and the operation automation degree is high.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a method and apparatus for dehumidifying a distribution automation ring main unit according to the present invention;
FIG. 2 is a schematic diagram of a method and apparatus for dehumidifying a distribution automation ring main unit according to the present invention;
FIG. 3 is a schematic diagram of the internal structure of a method and apparatus for dehumidifying a distribution automation ring main unit according to the present invention;
fig. 4 is a schematic structural diagram of an adsorption dehumidification device of a distribution automation ring main unit dehumidification method and device according to the present invention.
Wherein, 1, a box body, 2, a middle partition board, 3, a dehumidification channel, 4, a regeneration channel, 5, an adsorption dehumidification device, 6, a cooling dehumidification device, 7, a water collecting bucket, 8, a water collecting tank, 9, a rotating shaft, 10, a rotating gear, 11 and a lifting motor, 12, a sealing shell, 13, a dehumidifying shell, 14, a limiting plate, 15, a lifting rack, 16, an air vent, 17, a desiccant filling area, 18, an air inlet fan, 19, an air outlet fan, 20, a refrigerating sheet, 21, cooling fins, 22, heating fins, 23 and a sealing strip.
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-4, the distribution automation ring main unit dehumidification method and device of the invention comprise a box body 1, a middle partition plate 2, a dehumidification channel 3, a regeneration channel 4, an adsorption dehumidification device 5, a cooling dehumidification device 6, a water collecting bucket 7, a water collecting tank 8, a rotating shaft 9, a rotating gear 10, a lifting motor 11 and a sealing shell 12, wherein the middle partition plate 2 is arranged in the middle of the box body 1, the dehumidification channel 3 is arranged on one side of the middle partition plate 2, the regeneration channel 4 is arranged on the other side of the middle partition plate 2, the adsorption dehumidification device 5 is slidingly arranged on the middle partition plate 2, the adsorption dehumidification device 5 penetrates through the middle partition plate 2, the cooling dehumidification device 6 is arranged at one end, far away from the adsorption dehumidification device 5, in the box body 1, the water collecting bucket 7 is arranged below the dehumidification channel 3, the water collecting tank 8 is arranged below the water collecting bucket 7, the rotating shaft 9 is arranged at one end of the middle partition plate 2, the lifting motor 11 is arranged at the other end of the rotating shaft 9, the sealing shell 12 is arranged at the outer side of the box body 1, and the sealing shell 12 is shaped like a C and the sealing shell 12 is opened towards the water collecting tank 8.
The adsorption dehumidifying device 5 comprises a dehumidifying shell 13, a limiting plate 14, lifting racks 15, ventilation holes 16 and a desiccant filling area 17, wherein the dehumidifying shell 13 penetrates through the middle partition plate 2, the limiting plate 14 is arranged at one end of the dehumidifying shell 13, the lifting racks 15 are arranged on one side of the dehumidifying shell 13, the ventilation holes 16 are arranged on two vertical sides of the dehumidifying shell 13 in the middle partition plate 2, and the desiccant filling area 17 is arranged in the dehumidifying shell 13. The cooling and dehumidifying device 6 comprises an air inlet fan 18, an air outlet fan 19, a refrigerating sheet 20, cooling fins 21 and heating fins 22, wherein the air inlet fan 18 is arranged at one end, far away from the adsorption and dehumidifying device 5, in the dehumidifying channel 3, the air outlet fan 19 is arranged at one end, far away from the adsorption and dehumidifying device 5, in the regenerating channel 4, the refrigerating sheet 20 penetrates through the middle partition plate 2, the cooling fins 21 are arranged at one side, facing the dehumidifying channel 3, of the refrigerating sheet 20, and the heating fins 22 are arranged at one side, facing the regenerating channel 4, of the refrigerating sheet 20. A sealing strip 23 is arranged on one side, away from the water collecting tank 8, of the box body 1, and the sealing strip 23 is arranged between the two lifting racks 15.
A dehumidification method of a distribution automation ring main unit comprises the following specific steps:
s1: the desiccant is placed in the desiccant filling area 17, and then the adsorption dehumidification device 5 is placed in the box body 1;
s2: perforating the installation part of the distribution automation ring main unit, arranging a sealing shell 12 to penetrate through the wall of the cabinet, and inwards arranging one end of a water collection tank 8;
s3: starting the refrigerating plate 20 until the air inlet fan 18 is started after water drops are condensed at the air inlet fan 18;
s4: starting the lifting motor 11 after the adsorption saturation of a plurality of the drying agents, so that the adsorption and dehumidification device 5 in the dehumidification channel 3 slides to the regeneration channel 4, and the adsorption and dehumidification device 5 in the regeneration channel 4 slides to the dehumidification channel 3;
s5: starting the air outlet fan 19 to enable the hot air to regenerate the drying agent;
s6: repeating S4 and S5 again after the desiccant in the dehumidification channel 3 is saturated in adsorption;
s7: if the water in the water collecting tank 8 is full, the water collecting tank 8 can be unscrewed and poured.
When the dehumidifying device is particularly used, outside moisture-containing air enters through the dehumidifying channel 3, most of moisture is adsorbed by the desiccant in the adsorption dehumidifying device 5 in the process of passing through the dehumidifying channel 3, a small part of moisture is cooled and condensed by the cooling fins 21 and flows into the water collecting tank 8, the inside dry air is sent into the regenerating channel 4 through the air outlet fan 19 and is heated into hot air through the heating fins 22, and the hot air enables the moisture in the desiccant to be discharged.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.
Claims (2)
1. The utility model provides a distribution automation looped netowrk cabinet dehydrating unit which characterized in that: the water collection tank comprises a tank body, a middle partition plate, a dehumidification channel, a regeneration channel, an adsorption dehumidification device, a cooling dehumidification device, a water collection bucket, a water collection tank, a rotating shaft, a rotating gear, a lifting motor and a sealing shell, wherein the middle partition plate is arranged in the middle of the tank body;
the adsorption dehumidifying device comprises a dehumidifying shell, a limiting plate, a lifting rack, air holes and a drying agent filling area, wherein the dehumidifying shell penetrates through the middle partition plate, the limiting plate is arranged at one end of the dehumidifying shell, the lifting rack is arranged at one side of the dehumidifying shell, the air holes are arranged at two sides of the dehumidifying shell perpendicular to the middle partition plate, and the drying agent filling area is arranged in the dehumidifying shell;
the cooling and dehumidifying device comprises an air inlet fan, an air outlet fan, a cooling fin and a heating fin, wherein the air inlet fan is arranged at one end, far away from the adsorption and dehumidifying device, in the dehumidifying channel, the air outlet fan is arranged at one end, far away from the adsorption and dehumidifying device, in the regenerating channel, the cooling fin penetrates through the middle partition plate, the cooling fin is arranged at one side, facing the dehumidifying channel, of the cooling fin, and the heating fin is arranged at one side, facing the regenerating channel, of the cooling fin;
the box is equipped with the sealing strip from catchment jar one side, the sealing strip is located between two lift racks.
2. A dehumidification method based on the distribution automation ring main unit dehumidification device as claimed in claim 1, which is characterized by comprising the following specific steps:
s1: placing a drying agent into a drying agent filling area, and then placing an adsorption dehumidifying device into the box body;
s2: perforating the installation part of the distribution automation ring main unit, arranging a sealing shell to penetrate through the wall of the unit, and enabling one end of a water collection tank to be inward;
s3: starting the refrigerating sheet until the water drops at the air inlet fan are condensed, and starting the air inlet fan;
s4: starting the lifting motor after the plurality of drying agents are adsorbed and saturated, so that the adsorption and dehumidification device in the dehumidification channel slides to the regeneration channel, and the adsorption and dehumidification device in the regeneration channel slides to the dehumidification channel;
s5: starting an air outlet fan to enable the hot air to regenerate the drying agent;
s6: repeating S4 and S5 again after the desiccant in the dehumidification channel is saturated in adsorption;
s7: and if the water in the water collecting tank is full, the water collecting tank is unscrewed and poured out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110522764.7A CN113067259B (en) | 2021-05-13 | 2021-05-13 | Dehumidification method and device for distribution automation ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110522764.7A CN113067259B (en) | 2021-05-13 | 2021-05-13 | Dehumidification method and device for distribution automation ring main unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113067259A CN113067259A (en) | 2021-07-02 |
| CN113067259B true CN113067259B (en) | 2023-05-23 |
Family
ID=76568664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110522764.7A Active CN113067259B (en) | 2021-05-13 | 2021-05-13 | Dehumidification method and device for distribution automation ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113067259B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10253094A (en) * | 1997-03-14 | 1998-09-25 | Sanki Eng Co Ltd | Air conditioner |
| CN101476757A (en) * | 2009-01-19 | 2009-07-08 | 清华大学 | Solid adsorption moisture eliminator based on semiconductor refrigeration |
| CA2722405A1 (en) * | 2010-04-05 | 2011-10-05 | Bmil Technologies, Llc | High efficiency desiccant dehumidifier system |
| CN105674436A (en) * | 2016-02-01 | 2016-06-15 | 江苏省电力公司检修分公司 | Low-dew-point positive pressure air supply system and dehumidification method for high-voltage cabinet |
| CN106338113A (en) * | 2015-07-06 | 2017-01-18 | 中南大学 | Hybrid refrigeration-turning wheel dehumidification device |
| CN108826506A (en) * | 2018-07-23 | 2018-11-16 | 孙鹏 | A kind of adsorption and dehumidification regenerating energy-saving device |
| CN111237891A (en) * | 2020-01-17 | 2020-06-05 | 广州奥斯德科技有限公司 | Dehumidification runner and low temperature runner dehumidification unit |
| CN211320594U (en) * | 2020-01-04 | 2020-08-21 | 国家电网有限公司 | Dehumidification device of electric power looped netowrk cabinet |
| CN111819398A (en) * | 2017-11-28 | 2020-10-23 | 蒙特斯公司 | Humidity control unit and method |
-
2021
- 2021-05-13 CN CN202110522764.7A patent/CN113067259B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10253094A (en) * | 1997-03-14 | 1998-09-25 | Sanki Eng Co Ltd | Air conditioner |
| CN101476757A (en) * | 2009-01-19 | 2009-07-08 | 清华大学 | Solid adsorption moisture eliminator based on semiconductor refrigeration |
| CA2722405A1 (en) * | 2010-04-05 | 2011-10-05 | Bmil Technologies, Llc | High efficiency desiccant dehumidifier system |
| CN106338113A (en) * | 2015-07-06 | 2017-01-18 | 中南大学 | Hybrid refrigeration-turning wheel dehumidification device |
| CN105674436A (en) * | 2016-02-01 | 2016-06-15 | 江苏省电力公司检修分公司 | Low-dew-point positive pressure air supply system and dehumidification method for high-voltage cabinet |
| CN111819398A (en) * | 2017-11-28 | 2020-10-23 | 蒙特斯公司 | Humidity control unit and method |
| CN108826506A (en) * | 2018-07-23 | 2018-11-16 | 孙鹏 | A kind of adsorption and dehumidification regenerating energy-saving device |
| CN211320594U (en) * | 2020-01-04 | 2020-08-21 | 国家电网有限公司 | Dehumidification device of electric power looped netowrk cabinet |
| CN111237891A (en) * | 2020-01-17 | 2020-06-05 | 广州奥斯德科技有限公司 | Dehumidification runner and low temperature runner dehumidification unit |
Non-Patent Citations (1)
| Title |
|---|
| 半导体制冷与固体除湿结合装置的性能探究;郑宇薇，刘晓华，涂壤;《制冷学报》;20131016;第34卷(第5期);第59-64页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113067259A (en) | 2021-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204668749U (en) | A kind of high-tension switch cabinet dehumidifier | |
| CN106196346A (en) | A kind of energy-efficient low dew point rotary dehumidifier | |
| CN203642644U (en) | Heat pump dehumidifying and drying system | |
| CN201037728Y (en) | Combined sludge drying device | |
| CN210957293U (en) | Automatic dehumidification ring main unit | |
| CN113067259B (en) | Dehumidification method and device for distribution automation ring main unit | |
| CN207284037U (en) | A kind of server cabinet | |
| CN203707613U (en) | Moistureproof condensation-prevention dehumidifying device | |
| CN210074439U (en) | A dehydrating unit for transformer substation | |
| CN109200776B (en) | Anti-condensation system between underground transformer substation equipment | |
| CN205065987U (en) | Energy -conserving unit of skating rink dehumidification | |
| CN208674629U (en) | It is a kind of installation with electric ground switch can intelligent automation high-tension switch cabinet | |
| CN106207771A (en) | A kind of silica gel runner is applied to dehumidification system in switch cubicle | |
| CN206806762U (en) | A kind of electric power cabinet with dehumidification function | |
| CN212585094U (en) | Dehumidifier with vibrating device | |
| CN207559354U (en) | A kind of box-type substation Temperature and Humidity Control equipment | |
| CN205957357U (en) | Heat -pump type solution dehumidification equipment | |
| CN206116959U (en) | Interior dehumidification system of cubical switchboard is applied to to silica gel runner | |
| CN208157879U (en) | A kind of automatic dehumidifying comprehensive distribution box device | |
| CN202543161U (en) | Energy-saving coal gas condensing and dehumidifying device | |
| CN213816783U (en) | Moisture-proof power box | |
| CN206965454U (en) | A kind of air-cooled standard type freezing type drier | |
| CN205299779U (en) | Runner heat exchanger equipment | |
| CN205372859U (en) | Domestic moisture ejector | |
| CN215817188U (en) | Intelligent high-low voltage switch cabinet with remote monitoring function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A dehumidification method and device for distribution automation ring main unit Granted publication date: 20230523 Pledgee: China Postal Savings Bank Co.,Ltd. Dongying City Dongying District Branch Pledgor: Shandong lier Intelligent Technology Co.,Ltd. Registration number: Y2024980007360 |