CN109004539B - A kind of outside transformer substation wind and water preventing switchgear - Google Patents
A kind of outside transformer substation wind and water preventing switchgear Download PDFInfo
- Publication number
- CN109004539B CN109004539B CN201810891862.6A CN201810891862A CN109004539B CN 109004539 B CN109004539 B CN 109004539B CN 201810891862 A CN201810891862 A CN 201810891862A CN 109004539 B CN109004539 B CN 109004539B
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- Prior art keywords
- positioning
- wind
- support plate
- plate
- positioning screw
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Classifications
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- 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
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/303—Bases or feet
-
- 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
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/306—Accessories, e.g. windows
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses a kind of outside transformer substation wind and water preventing switchgears, including support plate, the I-beam pedestal being symmetrical set there are two being set at left and right sides of the underface of support plate, the upper surface of I-beam pedestal is equipped with the first positioning screw, the lateral surface upper end of first positioning screw socket-connects with the location hole that surface on the supporting plate is arranged, the upper surface of support plate is equipped with U-shaped wind shutter, this outside transformer substation wind and water preventing switchgear, it is compact-sized, it is easy for installation, maintenance is simple, long service life, damage of the strong wind to substation can be effectively prevented, it can effectively prevent the inside that rainwater enters substation again simultaneously, the setting of I-beam pedestal facilitates installation positioning of the invention, the setting of U-shaped wind shutter combination wind shutter can effectively reduce damage of the strong wind to substation, it can play the role of good dust suppression again simultaneously, first pressing plate It facilitates the installation of wind shutter in conjunction with the setting of the second pressing plate and fixes.
Description
Technical field
The present invention relates to switchgear technical field, specially a kind of outside transformer substation wind and water preventing switchgear.
Background technique
Currently, the switchgear of some outside transformer substations is placed in outwork for a long time, especially in wind and rain frequent season,
For a long time when blowing, switchgear is highly prone to damage wind-force, currently without good draught exclusion device, while rainwater access switch cabinet
It is interior, it is most likely that cause danger, so its waterproof performance is particularly important, and existing some switchgear waterproof performances are poor, rain
Water is easy to enter the inside of outdoor switch box by the gap between cabinet body and cabinet door, to influence the normal work of switchgear
Work, when high tension loop is leaked electricity in the main cabinet of switchgear, the door-plate of metal material can be conductive or stores electrostatic, and operator once touches
When touching the operating element on door-plate and door-plate, Danger Electric shock risk will cause, it is therefore desirable to arrange to the windproof and rain proof of outdoor switch box
Apply to improve, so that switchgear is not easily susceptible to damage, while proposing a kind of outside transformer substation wind and water preventing switchgear, convenient for more
Good protective switch cabinet is not easily susceptible to damage, and increases the service life of switchgear.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the existing defects, provides a kind of outside transformer substation wind and water preventing switch
Damage of the strong wind to substation can be effectively prevented in cabinet, brings convenience to the safe handling of substation, and can effectively prevent
Only rainwater enters the inside of substation, further improves service efficiency of the invention, can effectively solve in background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of outside transformer substation wind and water preventing switchgear, packet
It includes support plate, sets that there are two the I-beam pedestal being symmetrical set, I-beam bottoms at left and right sides of the underface of the support plate
The upper surface of seat is equipped with the first positioning screw, the lateral surface upper end of the first positioning screw and the positioning that surface on the supporting plate is arranged
Hole socket-connects, and the upper surface of support plate is equipped with U-shaped wind shutter, is determined by L shape at left and right sides of the lateral surface lower end of U-shaped wind shutter
Position plate is connected with the upper surface of support plate, and the leading flank left and right ends of U-shaped wind shutter are set there are two the riser being symmetrical set,
Riser pass through be arranged in its leading flank upper and lower ends positioning bolt be fixedly connected there are two setting symmetrical above and below L shape connect
The leading flank of plate, L shape connecting plate is equipped with rectangular frame, and the medial surface of rectangular frame is connected with wind shutter, the front side of rectangular frame
Face lower end is equipped with positioning plate, and the upper surface of positioning plate is connected by positioning bolt with the upper surface of support plate, the upper table of positioning plate
Face left and right ends are set there are two the abutment sleeve being symmetrical set, and the medial surface of abutment sleeve is equipped with positioning stud, positions spiral shell
The lateral surface threaded upper ends of column are connected with the first locating piece, the upper surface phase of the following table surface rear end and rectangular frame of the first locating piece
Even, the lateral surface upper and lower ends of positioning stud set the third locating piece there are two setting symmetrical above and below, and third locating piece is by setting
The threaded hole set in its leading flank is threaded with third positioning screw, and the rear end face of third positioning screw is equipped with the first pressing plate,
The upper surface middle part of support plate is equipped with equipment box.
As a preferred technical solution of the present invention, the lower surface of the I-beam pedestal is equipped with positioning screw hole, and fixed
The quantity of position screw hole is four, and four positioning screw holes are evenly distributed on the lower surface surrounding of I-beam pedestal.
As a preferred technical solution of the present invention, first positioning screw is symmetric design, wherein the of side
One positioning screw quantity is three, and three the first positioning screws are evenly distributed on the upper surface of I-beam pedestal from front to back, the
The lateral surface of one positioning screw is threaded with the first nut and the second nut, and support plate is arranged in the first nut and the second spiral shell
Between female lateral surface.
As a preferred technical solution of the present invention, the lower surface front and rear sides of the support plate set there are two front and back it is right
Claim the U-shaped supporting plate of setting, the lateral surface left and right ends of U-shaped supporting plate pass through upper surface phase of the positioning bolt with I-beam pedestal
Even.
As a preferred technical solution of the present invention, the second locating piece is equipped in the middle part of the lateral surface of the positioning stud,
Second locating piece is threaded with the second positioning screw, the rear end of the second positioning screw by the way that the threaded hole of its leading flank is arranged in
Face is equipped with the second pressing plate.
As a preferred technical solution of the present invention, the upper surface rear and front end of the equipment box set there are two front and back it is right
Claim the deflector of setting, the lateral surface lower end of equipment box is connected by mounting plate with the upper surface of support plate, and the number of mounting plate
Amount is four, and four mounting plates are evenly distributed on the lateral surface surrounding of equipment box.
As a preferred technical solution of the present invention, the trailing flank of the equipment box is equipped with ventilative grid, equipment box
Medial surface is equipped with Air Filter close to one end of ventilative grid, and the trailing flank of equipment box is anti-equipped with L shape close to the side of ventilative grid
Canopy.
As a preferred technical solution of the present invention, set that there are two left at left and right sides of the lateral surface upper end of the equipment box
The lower surface of right symmetrically arranged heat dissipating housing, heat dissipating housing is equipped with air outlet grate and wiring hole.
As a preferred technical solution of the present invention, the equipment box passes through the side lower end left and right sides that sets within it
Pull guide slidably connect apparatus mounting plate, the upper surface of support plate is equipped with seepage flow close to one end of equipment box lateral surface
Hole.
As a preferred technical solution of the present invention, the upper surface middle part of the support plate is equipped with by rectangular guiding cover,
And rectangular guiding cover is located at the inside of equipment box, the leading flank of equipment box is equipped with front shroud.
Compared with prior art, the beneficial effects of the present invention are: this outside transformer substation wind and water preventing switchgear, structure are tight
It gathers, easy for installation, maintenance is simple, and long service life can be effectively prevented damage of the strong wind to substation, while can effectively prevent again
Only rainwater enters the inside of substation, and the setting of I-beam pedestal facilitates installation positioning of the invention, and U-shaped wind shutter combines
The setting of wind shutter can effectively reduce damage of the strong wind to substation, while can play the role of good dust suppression again, the first pressure
The installation that the hardened setting for closing the second pressing plate facilitates wind shutter is fixed.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is left view of the present invention；
Fig. 3 is cross-sectional view of the present invention；
Fig. 4 is top view of the present invention.
In figure: 1 first positioning screw, 2 I-beam pedestals, 3 first pressing plates, 4 positioning plates, 5 wind shutters, 6 positioning studs, 7
First locating piece, 8 second pressing plates, 9 rectangular frames, 10 deflectors, 11 U-shaped wind shutters, 12 L shape positioning plates, 13 support plates, 14
Before seepage flow hole, 15 heat dissipating housings, 16 rectangular guiding covers, 17 U-shaped supporting plates, 18 ventilative grids, 19 Air Filters, 20 apparatus mounting plates, 21
Cover board, 22 abutment sleeves, 23 first nuts, 24 second nuts, 25 second locating pieces, 26 second positioning screws, the positioning of 27 thirds
Screw rod, 28 third locating pieces, 29 L shape connecting plates, 30 risers, 31 mounting plates, 32 equipment boxs.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution: a kind of outside transformer substation wind and water preventing switchgear, including
Support plate 13, sets that there are two the I-beam pedestal 2 being symmetrical set, I-beam pedestals at left and right sides of the underface of support plate 13
2 lower surface is equipped with positioning screw hole, and the quantity of positioning screw hole is four, and four positioning screw holes are evenly distributed on I-beam pedestal
2 lower surface surrounding, the setting of I-beam pedestal 2 facilitate installation positioning of the invention, the lower surface front and back two of support plate 13
Side is set there are two the symmetrically arranged U-shaped supporting plate 17 in front and back, and the lateral surface left and right ends of U-shaped supporting plate 17 pass through positioning bolt and work
The upper surface of word beam bottom seat 2 is connected, and the upper surface of I-beam pedestal 2 is equipped with the first positioning screw 1, and the first positioning screw 1 is pair
Claim design, wherein 1 quantity of the first positioning screw of side is three, and three the first positioning screws 1 are evenly distributed on from front to back
The upper surface of I-beam pedestal 2, the lateral surface of the first positioning screw 1 are threaded with the first nut 23 and the second nut 24, and
Support plate 13 is arranged between the first nut 23 and the lateral surface of the second nut 24, the lateral surface upper end of the first positioning screw 1 with
The location hole that 13 upper surface of support plate is arranged in socket-connects, and the upper surface of support plate 13 is equipped with U-shaped wind shutter 11, U-shaped wind shutter
It is connected by L shape positioning plate 12 with the upper surface of support plate 13 at left and right sides of 11 lateral surface lower end, before U-shaped wind shutter 11
Side left and right ends are set there are two the riser 30 being symmetrical set, and riser 30 passes through and determining for its leading flank upper and lower ends is arranged in
Position bolt is fixedly connected with the L shape connecting plate 29 there are two setting symmetrical above and below, and the leading flank of L shape connecting plate 29 is equipped with rectangular frame
9, the medial surface of rectangular frame 9 is connected with wind shutter 5, and U-shaped wind shutter 11 combines the setting of wind shutter 5 that can effectively reduce strong wind
Damage to substation, while good dust suppression can be played the role of again, the leading flank lower end of rectangular frame 9 is equipped with positioning plate 4, fixed
The upper surface of position plate 4 is connected by positioning bolt with the upper surface of support plate 13, and the upper surface left and right ends of positioning plate 4 are equipped with two
The medial surface of a abutment sleeve 22 being symmetrical set, abutment sleeve 22 is equipped with positioning stud 6, the lateral surface of positioning stud 6
Threaded upper ends are connected with the first locating piece 7, and the following table surface rear end of the first locating piece 7 is connected with the upper surface of rectangular frame 9, positioning
The lateral surface upper and lower ends of stud 6 set the third locating piece 28 there are two setting symmetrical above and below, and third locating piece 28 passes through setting
It is threaded with third positioning screw 27 in the threaded hole of its leading flank, the rear end face of third positioning screw 27 is equipped with the first pressing plate
3, the lateral surface middle part of positioning stud 6 is equipped with the second locating piece 25, and the second locating piece 25 passes through the screw thread that its leading flank is arranged in
Hole is threaded with the second positioning screw 26, and the rear end face of the second positioning screw 26 is equipped with the second pressing plate 8, and the first pressing plate 3 combines
The installation that the setting of second pressing plate 8 facilitates wind shutter 5 is fixed, and the upper surface middle part of support plate 13 is equipped with equipment box 32, equipment
The upper surface rear and front end of case 32 is set there are two the symmetrically arranged deflector 10 in front and back, and the lateral surface lower end of equipment box 32 passes through peace
Loading board 31 is connected with the upper surface of support plate 13, and the quantity of mounting plate 31 is four, and four mounting plates 31 are evenly distributed on and set
The lateral surface surrounding of standby case 32, the trailing flank of equipment box 32 are equipped with ventilative grid 18, and the medial surface of equipment box 32 is close to ventilation lattice
One end of grid 18 is equipped with Air Filter 19, and the trailing flank of equipment box 32 is equipped with L shape rain cover, equipment close to the side of ventilative grid 18
It is set at left and right sides of the lateral surface upper end of case 32 there are two the heat dissipating housing 15 being symmetrical set, the lower surface of heat dissipating housing 15 is equipped with
Gas grid and wiring hole, equipment box 32 slidably connect equipment by the pull guide at left and right sides of the side lower end that sets within it
The upper surface of mounting plate 20, support plate 13 is equipped with seepage flow hole 14, the upper table of support plate 13 close to one end of 32 lateral surface of equipment box
Middle face is equipped with by rectangular guiding cover 16, and rectangular guiding cover 16 is located at the inside of equipment box 32, and the leading flank of equipment box 32 is set
There is front shroud 21, this outside transformer substation wind and water preventing switchgear is compact-sized, and easy for installation, maintenance is simple, long service life,
Damage of the strong wind to substation can be effectively prevented, while can effectively prevent the inside that rainwater enters substation again.
When in use: I-beam pedestal 2 being installed to suitable position, then equipment box 32 is installed by mounting plate 31
To the upper surface middle part of support plate 13, then transformer equipment is installed to the inside of equipment box 32, by L shape positioning plate 12 by U
Shape wind shutter 11 is installed to the upper surface of support plate 13, and rectangular frame 9 is then installed to the upper of support plate 13 by positioning plate 4
Wind shutter 5 is fixed to the medial surface of rectangular frame 9 by the first pressing plate 3 and the second pressing plate 8, when blowing, is prevented by U-shaped by surface
Aerofoil 11 and wind shutter 5 reduce damage of the strong wind to substation, while can play again and prevent dust from entering substation well
Inside.
What the present invention can be convenient installs, and occupied space is few when use, is easily installed and uses；Can effectively it weaken
Damage of the strong wind to transformer equipment, improves ease of use；The setting of ventilative grid 18 facilitates heat dissipation, improves using just
Benefit.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of outside transformer substation wind and water preventing switchgear, including support plate (13), it is characterised in that: the support plate (13)
It sets at left and right sides of underface there are two the I-beam pedestal (2) being symmetrical set, the upper surface of I-beam pedestal (2) is equipped with the
One positioning screw (1), location hole of the lateral surface upper end of the first positioning screw (1) with setting in support plate (13) upper surface are nested
It connects, the upper surface of support plate (13) is equipped with U-shaped wind shutter (11), logical at left and right sides of the lateral surface lower end of U-shaped wind shutter (11)
It crosses L shape positioning plate (12) to be connected with the upper surface of support plate (13), there are two the leading flank left and right ends of U-shaped wind shutter (11) are set
The riser (30) being symmetrical set, riser (30) are fixedly connected with by the way that the positioning bolt of its leading flank upper and lower ends is arranged in
The leading flank of the L shape connecting plate (29) of two settings symmetrical above and below, L shape connecting plate (29) is equipped with rectangular frame (9), rectangular frame
(9) medial surface is connected with wind shutter (5), and the leading flank lower end of rectangular frame (9) is equipped with positioning plate (4), positioning plate (4) it is upper
Surface is connected by positioning bolt with the upper surface of support plate (13), the upper surface left and right ends of positioning plate (4) set there are two a left side
The medial surface of right symmetrically arranged abutment sleeve (22), abutment sleeve (22) is equipped with positioning stud (6), outside positioning stud (6)
Side threaded upper ends are connected with the first locating piece (7), the following table surface rear end of the first locating piece (7) and the upper table of rectangular frame (9)
Face is connected, and the lateral surface upper and lower ends of positioning stud (6) set the third locating piece (28) there are two setting symmetrical above and below, and third is fixed
Position block (28) is threaded with third positioning screw (27) by the way that the threaded hole of its leading flank is arranged in, third positioning screw (27)
Rear end face be equipped with the first pressing plate (3), the upper surface middle part of support plate (13) is equipped with equipment box (32).
2. a kind of outside transformer substation wind and water preventing switchgear according to claim 1, it is characterised in that: the I-beam bottom
The lower surface of seat (2) is equipped with positioning screw hole, and the quantity of positioning screw hole is four, and four positioning screw holes are evenly distributed on I-beam
The lower surface surrounding of pedestal (2).
3. a kind of outside transformer substation wind and water preventing switchgear according to claim 1, it is characterised in that: first positioning
Screw rod (1) is symmetric design, and wherein the first positioning screw (1) quantity of side is three, and three the first positioning screws (1) are in the past
It is evenly distributed on the upper surface of I-beam pedestal (2) backward, the lateral surface of the first positioning screw (1) is threaded with the first nut
(23) with the second nut (24), and support plate (13) be arranged between the first nut (23) and the lateral surface of the second nut (24).
4. a kind of outside transformer substation wind and water preventing switchgear according to claim 1, it is characterised in that: the support plate
(13) lower surface front and rear sides are set there are two the symmetrically arranged U-shaped supporting plate (17) in front and back, the lateral surface or so of U-shaped supporting plate (17)
Both ends pass through positioning bolt and are connected with the upper surface of I-beam pedestal (2).
5. a kind of outside transformer substation wind and water preventing switchgear according to claim 1, it is characterised in that: the positioning stud
(6) the second locating piece (25) are equipped in the middle part of lateral surface, the second locating piece (25) passes through the threaded hole spiral shell that its leading flank is arranged in
Line is connected with the second positioning screw (26), and the rear end face of the second positioning screw (26) is equipped with the second pressing plate (8).
6. a kind of outside transformer substation wind and water preventing switchgear according to claim 1, it is characterised in that: the equipment box
(32) upper surface rear and front end is set there are two the symmetrically arranged deflector in front and back (10), and the lateral surface lower end of equipment box (32) is logical
It crosses mounting plate (31) to be connected with the upper surface of support plate (13), and the quantity of mounting plate (31) is four, four mounting plates (31)
It is evenly distributed on the lateral surface surrounding of equipment box (32).
7. a kind of outside transformer substation wind and water preventing switchgear according to claim 1, it is characterised in that: the equipment box
(32) trailing flank is equipped with ventilative grid (18), and the medial surface of equipment box (32) is equipped with dust-proof close to the one end of ventilative grid (18)
The trailing flank of net (19), equipment box (32) is equipped with L shape rain cover close to the side of ventilative grid (18).
8. a kind of outside transformer substation wind and water preventing switchgear according to claim 1, it is characterised in that: the equipment box
(32) it is set at left and right sides of lateral surface upper end there are two the heat dissipating housing (15) being symmetrical set, the lower surface of heat dissipating housing (15) is set
There are air outlet grate and wiring hole.
9. a kind of outside transformer substation wind and water preventing switchgear according to claim 1, it is characterised in that: the equipment box
(32) apparatus mounting plate (20), support plate are slidably connected by the pull guide at left and right sides of the side lower end that sets within it
(13) upper surface is equipped with seepage flow hole (14) close to one end of equipment box (32) lateral surface.
10. a kind of outside transformer substation wind and water preventing switchgear according to claim 1, it is characterised in that: the support plate
(13) upper surface middle part is equipped with by rectangular guiding cover (16), and rectangular guiding cover (16) is located at the inside of equipment box (32), if
The leading flank of standby case (32) is equipped with front shroud (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810891862.6A CN109004539B (en) | 2018-08-07 | 2018-08-07 | A kind of outside transformer substation wind and water preventing switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810891862.6A CN109004539B (en) | 2018-08-07 | 2018-08-07 | A kind of outside transformer substation wind and water preventing switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109004539A CN109004539A (en) | 2018-12-14 |
| CN109004539B true CN109004539B (en) | 2019-09-13 |
Family
ID=64595565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810891862.6A Active CN109004539B (en) | 2018-08-07 | 2018-08-07 | A kind of outside transformer substation wind and water preventing switchgear |
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| Country | Link |
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| CN (1) | CN109004539B (en) |
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| CN112928610B (en) * | 2021-03-18 | 2022-12-09 | 国网山东省电力公司乐陵市供电公司 | Windproof device for high-voltage transformer substation |
| CN113314998B (en) * | 2021-06-07 | 2024-05-24 | 镇江云龙电器设备有限公司 | Electrical cabinet assembly with efficient heat dissipation performance |
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| CN207518098U (en) * | 2017-11-28 | 2018-06-19 | 郦建永 | A kind of high outdoor electric power cabinet of security functions |
| CN107808739A (en) * | 2017-12-04 | 2018-03-16 | 陈志军 | A kind of transformer protective housing with high-efficient radiating function |
| CN207588688U (en) * | 2017-12-11 | 2018-07-06 | 上海沃威沃水技术有限公司 | A kind of good frequency conversion tank of heat dissipation |
| CN207559388U (en) * | 2017-12-25 | 2018-06-29 | 福建京华电气设备有限公司 | A kind of outside transformer substation wind and water preventing switchgear |
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| CN109004539A (en) | 2018-12-14 |
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