CN112350187A - Box-type substation cooling system - Google Patents
Box-type substation cooling system Download PDFInfo
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- CN112350187A CN112350187A CN202011112586.2A CN202011112586A CN112350187A CN 112350187 A CN112350187 A CN 112350187A CN 202011112586 A CN202011112586 A CN 202011112586A CN 112350187 A CN112350187 A CN 112350187A
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- Prior art keywords
- box
- fixedly connected
- pipe
- type substation
- cooling system
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- 238000001816 cooling Methods 0.000 title claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 230000017525 heat dissipation Effects 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims description 18
- 239000000428 dust Substances 0.000 claims description 17
- 238000009423 ventilation Methods 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 239000005341 toughened glass Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 12
- 230000009471 action Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 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
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
-
- 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
-
- 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
- H02B1/46—Boxes; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Abstract
The disclosure relates to a box-type substation cooling system, and relates to the technical field of substations. Including box-type substation body, the top fixedly connected with waterproof cover of box-type substation body, the left surface fixedly connected with cooling box of box-type substation body, the right side fixedly connected with heat dissipation case of box-type substation body. This box-type substation cooling system, through setting up cooler bin and conveyer pipe, at the water tank, first connecting pipe, the second connecting pipe, under the cooperation of cooler bin and circulating pipe is used, carry the cooler bin with the inside water of water tank under the effect of first water pump in, carry the circulating pipe with water under the effect of second connecting pipe, the conveyer pipe carries the hot-air of box-type substation body, realize that the circulating pipe carries out the heat exchange with the inside air of conveyer pipe, realize rapid cooling, thereby cool off the box-type substation body, thereby the inside distribution subassembly normal operating of box-type substation body has been guaranteed, the life of box-type substation body is improved.
Description
Technical Field
The disclosure relates to the technical field of transformer substations, in particular to a box-type transformer substation cooling system.
Background
The box-type substation is a high-voltage switch device, a distribution transformer and a low-voltage distribution device, is factory prefabricated indoor and outdoor compact distribution equipment which is integrated according to a certain wiring scheme, namely a steel structure box body which organically combines functions of high-voltage power receiving, transformer voltage reduction, low-voltage distribution and the like, is particularly suitable for urban network construction and transformation, and is a brand-new substation which grows up after civil engineering substations. The box-type substation is applicable to the mine, factory enterprise, oil gas field and wind power generation station, it has replaced original civil engineering power distribution room, the distribution substation, become neotype complete set transformer distribution equipment, because equipment in the box-type substation is at the in-process of operation, can produce a large amount of heats, but because box-type substation is totally enclosed's service equipment, thereby make its unable rapid heat dissipation cooling, make equipment damage because long-time high temperature work, need the maintenance to change the electronic equipment who damages, make the cost of maintenance of equipment improve.
Box-type substation among the prior art adopts single cooling method at the refrigerated in-process, and cooling efficiency is low, when adopting water-cooled mode to cool off, the cooling effect is general, can't carry out cyclic utilization to the cooling water, and the resource-wasting utilizes the forced air cooling to carry out radiating in-process, can't be timely discharges steam to the radiating efficiency that leads to cooling system is lower, and then can make the heat deposit in box-type substation and influence the normal work of distribution subassembly.
Disclosure of Invention
To prior art's not enough, this disclosure provides box-type substation cooling system, possesses dual mode and cools off, the cooling effect is good and prolonged advantages such as box-type substation's life, has solved the general problem of current box-type substation cooling effect.
The technical scheme of the disclosure is as follows:
in order to realize the purposes of cooling in a heavy mode, having good cooling effect and prolonging the service life of the box-type substation, the present disclosure provides the following technical scheme: a box-type substation cooling system comprises a box-type substation body, wherein the top of the box-type substation body is fixedly connected with a waterproof cover, the left side surface of the box-type substation body is fixedly connected with a cooling box, the right side surface of the box-type substation body is fixedly connected with a heat dissipation box, the bottom of an inner cavity of the cooling box is fixedly connected with a water tank, the top of the water tank is fixedly connected with a return pipe and a first connecting pipe from left to right in sequence, one end of the first connecting pipe, which is far away from the water tank, is fixedly connected with a placing box, the first connecting pipe penetrates through and extends into the placing box and is fixedly connected with a cooling pipe positioned at the top of the supporting plate, the right side surface of the placing box is fixedly connected with a second connecting pipe, the periphery of the inner wall of the cooling box is provided with a circulating pipe, one side of the circulating pipe is fixedly connected with a conveying pipe, one end of the conveying pipe, which is far away from the circulating pipe, penetrates through the cooling box and extends to the outer side of the cooling box, and the conveying pipe is fixedly connected with a box-type substation body;
the inside fixedly connected with air inlet mechanism of heat dissipation case, the inside of heat dissipation case and the left side fixedly connected with radiator fan that is located air inlet mechanism, one side fixedly connected with that radiator fan kept away from air inlet mechanism is located the inside second dust screen and the dampproofing net of heat dissipation case.
Further, the air inlet mechanism includes first dust screen, and one side fixedly connected with connecting plate of first dust screen, and the ventilation hole has been seted up on the surface of connecting plate.
Further, the number of the vent holes is eight, and the eight vent holes are obliquely arranged on the surface of the connecting plate from left to right.
Further, the interior of the moisture-proof net is filled with blue silica gel particles.
Furthermore, the surfaces of the first connecting pipe and the second connecting pipe are fixedly connected with a first water pump and a second water pump respectively, and the surfaces of the first connecting pipe, the second connecting pipe and the return pipe are provided with valves.
Furthermore, one end of the return pipe, which is far away from the water tank, is communicated with the circulating pipe.
Furthermore, the left side face of the water tank is fixedly connected with a water inlet pipe, and one end, far away from the water tank, of the water inlet pipe sequentially penetrates through the circulating pipe and the cooling tank and extends to the left side of the cooling tank.
Further, the front of box-type substation body articulates through the hinge has the chamber door, and the front of chamber door is provided with the observation window, the observation window is the toughened glass observation window.
Compared with the prior art, the utility model provides a box-type substation cooling system possesses following beneficial effect:
1. this box-type substation cooling system, through setting up cooler bin and conveyer pipe, at the water tank, first connecting pipe, the second connecting pipe, under the cooperation of cooler bin and circulating pipe is used, carry the cooler bin with the inside water of water tank under the effect of first water pump in, carry the circulating pipe with water under the effect of second connecting pipe, the conveyer pipe carries the hot-air of box-type substation body, realize that the circulating pipe carries out the heat exchange with the inside air of conveyer pipe, realize rapid cooling, thereby cool off the box-type substation body, thereby the inside distribution subassembly normal operating of box-type substation body has been guaranteed, the life of box-type substation body is improved.
2. This box-type substation cooling system, through setting up heat dissipation case and cooling fan, dispel the heat to box-type substation body under cooling fan's effect, the cooling rate has been improved, reduce the spoilage of distribution subassembly, make the maintenance cost of box-type substation body reduced, set up air inlet mechanism and ventilation hole and make and to discharge the heat dissipation case outside the air current that can uprise the inside temperature of box-type substation body, guarantee the inside cooling temperature of heat dissipation case, simultaneously first dust screen and ventilation hole can guarantee the pressure differential between the inside and outside of heat dissipation case, avoided heat dissipation incasement pressure too big lead to the distribution subassembly to damage, the result of use of this box-type substation cooling system has further been improved.
Drawings
FIG. 1 is a schematic structural view of the present disclosure;
FIG. 2 is a schematic view of a cooling box configuration according to the present disclosure;
FIG. 3 is a schematic view of a storage case of the present disclosure;
FIG. 4 is a schematic view of a heat dissipation case according to the present disclosure;
FIG. 5 is a schematic view of the structure of the air intake mechanism of the present disclosure.
In the figure: 1. a box-type substation body; 2. an observation window; 3. a waterproof cover; 4. a cooling tank; 41. a water tank; 42. a first connecting pipe; 43. a first water pump; 44. placing a box; 441. a support plate; 442. a cooling tube; 45. a circulation pipe; 46. a second connecting pipe; 47. a second water pump; 48. a return pipe; 49. a delivery pipe; 410. a water inlet pipe; 5. a heat dissipation box; 51. an air inlet mechanism; 511. a first dust screen; 512. a connecting plate; 513. a vent hole; 52. a heat radiation fan; 53. a second dust screen; 54. a moisture-proof mesh.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
Referring to fig. 1-5, the present disclosure discloses a box-type substation cooling system, which includes a box-type substation body 1, a waterproof cover 3 is fixedly connected to the top of the box-type substation body 1, a cooling box 4 is fixedly connected to the left side of the box-type substation body 1, a heat dissipation box 5 is fixedly connected to the right side of the box-type substation body 1, a water tank 41 is fixedly connected to the bottom of the inner cavity of the cooling box 4, a return pipe 48 and a first connection pipe 42 are fixedly connected to the top of the water tank 41 from left to right in sequence, a placement box 44 is fixedly connected to one end of the first connection pipe 42 away from the water tank 41, a support plate 441 is fixedly connected to the bottom of the inner cavity of the placement box 44, the first connection pipe 42 penetrates and extends into the placement box 44 and is fixedly connected to a cooling pipe 442 located at the top of the support plate 441, a circulating pipe 45 is arranged on the periphery of the inner wall of the cooling tank 4, a conveying pipe 49 is fixedly connected to one side of the circulating pipe 45, one end, far away from the circulating pipe 45, of the conveying pipe 49 penetrates through and extends to the outer side of the cooling tank 4 and is fixedly connected with the box-type substation body 1, a first water pump 43 and a second water pump 47 are fixedly connected to the surfaces of the first connecting pipe 42 and the second connecting pipe 46 respectively, valves are arranged on the surfaces of the first connecting pipe 42, the second connecting pipe 46 and the return pipe 48, and one end, far away from the water tank 41, of the return pipe 48 is communicated with the circulating;
the inside fixedly connected with air inlet mechanism 51 of heat dissipation case 5, the inside of heat dissipation case 5 and the left side fixedly connected with radiator fan 52 that is located air inlet mechanism 51, one side fixedly connected with that radiator fan 52 kept away from air inlet mechanism 51 is located the inside second dust screen 53 and the dampproofing net 54 of heat dissipation case 5.
Specifically, air inlet mechanism 51 includes first dust screen 511, one side fixedly connected with connecting plate 512 of first dust screen 511, and ventilation hole 513 has been seted up on the surface of connecting plate 512, states the quantity of ventilation hole 513 and is eight, eight ventilation hole 513 inclines from a left side to the right side and sets up on the surface of connecting plate 512.
In this embodiment, under the cooperation of first dust screen 511 and ventilation hole 513 was used, the radiating effect of box-type substation body 1 had further been improved, avoided simultaneously at radiating in-process, pollutant influences radiating effect such as a large amount of dusts appear in radiating box 5 inside.
Specifically, the moisture-proof net 54 is filled with blue silica gel particles.
In this embodiment, the setting of blue silica gel granule is convenient for absorb the moisture in the air, avoids influencing the inside distribution assembly normal operating of box-type substation body 1.
Specifically, the water inlet pipe 410 is fixedly connected to the left side surface of the water tank 41, and one end of the water inlet pipe 410, which is far away from the water tank 41, sequentially penetrates through the circulating pipe 45 and the cooling tank 4 and extends to the left side of the cooling tank 4.
In this embodiment, the arrangement of the water inlet pipe 410 facilitates the timely water feeding of the operator to the inside of the water tank 41, and the cooling efficiency is improved.
Specifically, the front of box-type substation body 1 articulates through the hinge has the chamber door, and the front of chamber door is provided with observation window 2, observation window 2 is the toughened glass observation window.
In this embodiment, the setting of observation window 2 makes things convenient for staff's observation.
The working principle and the using process of the method are as follows: when the box-type substation body 1 works, the first water pump 43 is started to convey water in the water tank 41 into the first connecting pipe 42 and further into the cooling pipe 442 in the placing box 44, the water is conveyed into the circulating pipe 45 under the action of the second connecting pipe 46, the conveying pipe 49 conveys hot air in the box-type substation body 1, when the hot air moves in the conveying pipe 49, the hot air exchanges heat with air in the conveying pipe 49 through the circulating pipe 45 to cool and dissipate heat of the box-type substation body 1, so as to achieve the purpose of cooling the interior of the box-type substation body 1, the water in the circulating pipe 45 is conveyed into the water tank 41 under the action of the return pipe 48, the water is recycled, the heat dissipation fan 52 in the heat dissipation box 5 is started at the same time, the air outside the box-type substation body 1 enters the heat dissipation box 5 from the first dustproof net 511 and the vent 513 on the connecting plate 512 through the air inlet mechanism 51, and then dispel the heat to box power distribution station body 1, outside the air current that the temperature that will dispel the heat 5 inside becomes high discharge heat dissipation case 5 under the effect of cooling blower 52, guarantee the inside cooling temperature of heat dissipation case 5, first dust screen 511 and ventilation hole 513 can guarantee the pressure difference between the inside and outside of heat dissipation case 5 simultaneously, have avoided 5 internal pressure of heat dissipation cases too big to lead to the distribution subassembly to damage.
To sum up, the cooling box 4 and the delivery pipe 49 are arranged, under the matching use of the water tank 41, the first connecting pipe 42, the second connecting pipe 46, the cooling pipe 442 and the circulating pipe 45, water in the water tank 41 is delivered into the cooling pipe 442 under the action of the first water pump 43, the water is delivered into the circulating pipe 45 under the action of the second connecting pipe 46, the delivery pipe 49 delivers hot air of the box-type substation body 1, the heat exchange between the circulating pipe 45 and the air in the delivery pipe 49 is realized, the rapid cooling is realized, and the box-type substation body 1 is cooled, so that the normal operation of a power distribution assembly in the box-type substation body 1 is ensured, and the service life of the box-type substation body is prolonged; through setting up heat dissipation case 5 and cooling fan 52, dispel the heat to box-type substation body 1 under cooling fan 52's effect, the cooling rate has been improved, reduce the spoilage of distribution subassembly, make the maintenance cost of box-type substation body 1 reduced, set up air inlet mechanism 51 and ventilation hole 513 and make and to discharge the heat dissipation case 5 with the inside air current that the temperature of box-type substation body 1 became high outside, guarantee the inside cooling temperature of heat dissipation case 5, first dust screen 511 and ventilation hole 513 can guarantee the pressure differential between the inside and outside of heat dissipation case 5 simultaneously, avoided 5 internal pressure of heat dissipation case too big distribution subassembly damage that leads to, the result of use of this box-type substation cooling system has further been improved.
It should be noted that, in this document, terms such as "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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Box-type substation cooling system, including box-type substation body, its characterized in that: the top of the box-type substation body is fixedly connected with a waterproof cover, the left side surface of the box-type substation body is fixedly connected with a cooling box, the right side surface of the box-type substation body is fixedly connected with a heat dissipation box, the bottom of the inner cavity of the cooling box is fixedly connected with a water tank, a return pipe and a first connecting pipe are fixedly connected with the top of the water tank from left to right in sequence, a placing box is fixedly connected with one end of the first connecting pipe, which is far away from the water tank, a supporting plate is fixedly connected with the bottom of an inner cavity of the placing box, and the first connecting pipe penetrates through and extends into the placing box and is fixedly connected with a cooling pipe positioned at the top of the supporting plate, the right side surface of the placing box is fixedly connected with a second connecting pipe, the periphery of the inner wall of the cooling box is provided with a circulating pipe, one side of the circulating pipe is fixedly connected with a conveying pipe, one end of the conveying pipe, which is far away from the circulating pipe, penetrates through the cooling box and extends to the outer side of the cooling box, and the conveying pipe is fixedly connected with a box-type substation body;
the inside fixedly connected with air inlet mechanism of heat dissipation case, the inside of heat dissipation case and the left side fixedly connected with radiator fan that is located air inlet mechanism, one side fixedly connected with that radiator fan kept away from air inlet mechanism is located the inside second dust screen and the dampproofing net of heat dissipation case.
2. The box substation cooling system according to claim 1, characterized in that: the air inlet mechanism comprises a first dust screen, one side of the first dust screen is fixedly connected with a connecting plate, and a ventilation hole is formed in the surface of the connecting plate.
3. The box substation cooling system according to claim 2, characterized in that: the number of the vent holes is eight.
4. The box substation cooling system according to claim 3, characterized in that: the eight ventilation holes are obliquely arranged on the surface of the connecting plate from left to right.
5. The box substation cooling system according to claim 1, characterized in that: blue silica gel particles are filled in the moisture-proof net.
6. The box substation cooling system according to claim 1, characterized in that: the surface of the first connecting pipe and the surface of the second connecting pipe are respectively and fixedly connected with a first water pump and a second water pump, and the surfaces of the first connecting pipe, the second connecting pipe and the return pipe are respectively provided with a valve.
7. The box substation cooling system according to claim 1, characterized in that: one end of the return pipe, which is far away from the water tank, is communicated with the circulating pipe.
8. The box substation cooling system according to claim 1, characterized in that: the left side fixedly connected with inlet tube of water tank, and the one end of keeping away from the water tank of inlet tube runs through circulating pipe and cooler bin in proper order and extends to the left side of cooler bin.
9. The box substation cooling system according to claim 1, characterized in that: the front of box-type substation body articulates through the hinge has the chamber door, and the front of chamber door is provided with the observation window, the observation window is the toughened glass observation window.
10. The box substation cooling system according to claim 1, characterized in that: the air inlet mechanism comprises a first dust screen, one side of the first dust screen is fixedly connected with a connecting plate, and a ventilation hole is formed in the surface of the connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011112586.2A CN112350187A (en) | 2020-10-16 | 2020-10-16 | Box-type substation cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011112586.2A CN112350187A (en) | 2020-10-16 | 2020-10-16 | Box-type substation cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112350187A true CN112350187A (en) | 2021-02-09 |
Family
ID=74362006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011112586.2A Pending CN112350187A (en) | 2020-10-16 | 2020-10-16 | Box-type substation cooling system |
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| Country | Link |
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| CN (1) | CN112350187A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112952617A (en) * | 2021-03-15 | 2021-06-11 | 国网河北省电力有限公司电力科学研究院 | Dual-mode distribution line automatic terminal |
| CN113746013A (en) * | 2021-08-30 | 2021-12-03 | 安徽迪康电力科技有限公司 | Cooling equipment for box-type substation and box-type substation |
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| CN210669249U (en) * | 2019-10-21 | 2020-06-02 | 江苏翔凌电气设备有限公司 | Box-type substation of multiple heat dissipation function |
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| CN211556652U (en) * | 2020-04-10 | 2020-09-22 | 山东鼎盛电气设备有限公司 | Novel box-type substation structure |
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2020
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| CN204720834U (en) * | 2015-04-30 | 2015-10-21 | 国家电网公司 | A kind of box type transformer station shell |
| CN209056827U (en) * | 2018-12-27 | 2019-07-02 | 青岛和瑞德电力科技有限公司 | A kind of box-type substation with auto-alarm function |
| CN210156797U (en) * | 2019-08-07 | 2020-03-17 | 任鹏飞 | Dampproofing radiating block terminal |
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| CN112952617A (en) * | 2021-03-15 | 2021-06-11 | 国网河北省电力有限公司电力科学研究院 | Dual-mode distribution line automatic terminal |
| CN113746013A (en) * | 2021-08-30 | 2021-12-03 | 安徽迪康电力科技有限公司 | Cooling equipment for box-type substation and box-type substation |
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Application publication date: 20210209 |