CN109494044B - Dustproof heat dissipation device for workshop transformer - Google Patents
Dustproof heat dissipation device for workshop transformer Download PDFInfo
- Publication number
- CN109494044B CN109494044B CN201811577733.6A CN201811577733A CN109494044B CN 109494044 B CN109494044 B CN 109494044B CN 201811577733 A CN201811577733 A CN 201811577733A CN 109494044 B CN109494044 B CN 109494044B
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- cabinet body
- water tank
- transformer
- rainwater
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 230000005855 radiation Effects 0.000 claims 1
- 239000000428 dust Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000013021 overheating Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/022—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention relates to the field of power equipment, in particular to a dustproof heat dissipation device for a workshop transformer, which comprises a cabinet body for mounting the transformer, a cabinet door for opening and closing the cabinet body and an upper cover covering the top end of the cabinet body, wherein a heat dissipation window is arranged on the side wall of the cabinet body; the outer side wall of the cabinet body, which is positioned at the side of the heat dissipation window, is provided with a rainwater collecting mechanism, the rainwater collecting mechanism comprises a base, a sliding rail and a water tank, the base is positioned at the bottom end of the heat dissipation window and is fixedly connected with the cabinet body, the sliding rail is fixedly arranged on the base, the water tank is used for collecting rainwater on the upper cover, the water tank is in sliding fit with the sliding rail, and a supporting piece; a connecting rope is arranged between the water tank and the waterproof curtain and is fixedly connected with the water tank and the waterproof curtain respectively. The transformer cabinet can avoid the problem of transformer failure caused by rainwater entering the cabinet body through the heat dissipation window.
Description
Technical Field
The invention relates to the field of power equipment, in particular to a dustproof heat dissipation device for a workshop transformer.
Background
With the maturity of power technology in China, various power equipment develops rapidly, a transformer is one of the most common power equipment, and the running state of the transformer directly determines the running safety and stability of a power system and the reliability of power supply. The transformer can be divided into a dry type transformer and an oil-immersed transformer according to a cooling mode, mechanical equipment in a production workshop is many, and the operation load is large, so that the workshop generally adopts the oil-immersed transformer with stronger overload capacity, the oil-immersed transformer is easy to generate heat during operation, and if the heat is not dissipated in time, the transformer can break down due to overhigh temperature.
In order to solve the problem of heat dissipation of the transformer, the chinese invention with publication number CN107705958A discloses a heat dissipation device for a transformer, wherein a transformer body is installed in a cabinet body, and the cabinet body comprises a top plate, a bottom plate and side plates at four sides; the side plates are of a double-layer structure, and a ventilation gap is reserved between the inner-layer plate body and the outer-layer plate body; a plurality of ventilation grids A are arranged on the inner-layer plate body from top to bottom; the outer layer plate body is provided with a plurality of ventilation grids B from top to bottom; the cabinet body is provided with an air outlet on a top plate; the cabinet body is provided with an air inlet on a bottom plate; a heat dissipation frame is arranged between two adjacent transformer bodies in the cabinet body; the heat dissipation frame is provided with an air guide pipe. According to the scheme, the air guide pipe is arranged around the transformer body of the transformer, and the temperature of the transformer is forcibly reduced by accelerating the flow of wind.
The cooling oil in the oil-immersed transformer belongs to flammable and explosive substances, so that the oil-immersed transformer can be installed outdoors in a production workshop adopting the oil-immersed transformer. The outdoor transformer is required to adapt to various complex weather conditions, the oil immersed transformer threatens the largest thunderstorm weather, and the internal circuit of the transformer is burnt due to short circuit caused by rainwater. In the prior art, a heat dissipation window is often formed in an outer case casing of a transformer, and the transformer is cooled by air convection. When the existing heat dissipation mode meets thunderstorm weather, rainwater can enter the cabinet body from the heat dissipation window, and the transformer is easily damaged.
Disclosure of Invention
The invention aims to provide a dustproof heat dissipation device for a workshop transformer, which can avoid the problem of transformer failure caused by rainwater entering a cabinet body through a heat dissipation window.
The basic scheme provided by the invention is as follows: a dustproof heat abstractor for workshop transformer, including the cabinet door that is used for installing the cabinet body of transformer, the cubical switchboard body and cover in the upper cover on cabinet body top, seted up heat dissipation window on the cabinet side wall, its characterized in that:
the inner side wall of the cabinet body, which is positioned at the side of the upper heat dissipation window, is provided with a waterproof mechanism, and the waterproof mechanism comprises a scroll fixedly arranged at the bottom end of the cabinet body and a waterproof curtain curled on the scroll; the outer side wall of the cabinet body, which is positioned at the side of the heat dissipation window, is provided with a rainwater collecting mechanism, the rainwater collecting mechanism comprises a base, a sliding rail and a water tank, the base is positioned at the bottom end of the heat dissipation window and is fixedly connected with the cabinet body, the sliding rail is fixedly arranged on the base, the water tank is used for collecting rainwater on the upper cover, the water tank is in sliding fit with the sliding rail, and a supporting piece;
a connecting rope is fixedly arranged on the water tank, the free end of the connecting rope penetrates through the side wall of the cabinet body to be fixedly connected with the waterproof curtain, a pulley is fixedly arranged on the side wall of the cabinet body at the position of the connecting rope, and the connecting rope is in sliding fit with the fixed pulley;
the support piece is an elastic element which enables the waterproof curtain to be curled on the scroll to enable the heat dissipation window to be completely exposed through the connecting rope when the water tank is in a water-free state, and pulls the waterproof curtain to seal the heat dissipation window through the connecting rope when the water tank is in a water-full state.
The invention has the beneficial effects that:
when the water tank is normally used (in rainy weather), the water tank is only supported by the supporting piece, the waterproof curtain is curled on the scroll, and the heat dissipation window dissipates heat for the transformer. When meetting thunderstorm weather, the upper cover of the cabinet body can shelter from the rainwater for the cabinet body, prevents that the rainwater from soaking in the cabinet body, and the rainwater that the upper cover flowed down is collected to the water tank simultaneously, and the rainwater has increased the overall quality of water tank, and the water tank can compress and support piece between the base, and the water tank can be along slide rail downstream simultaneously, and the motion of water tank can stimulate the connection rope upward movement, and the motion of connecting the rope can drive waterproof curtain and spool motion: the waterproof curtain can be unfolded upwards under the action of the tensile force of the connecting rope, and the unfolding of the waterproof curtain can drive the scroll to rotate; when the water tank is full of rainwater, the waterproof curtain seals the heat dissipation window to prevent rainwater from entering.
According to the invention, the waterproof curtain of the rainproof device can be automatically unfolded to shield the heat dissipation window in rainy days, so that rainwater is prevented from entering the cabinet body, and the problem of transformer failure caused by the fact that rainwater enters the cabinet body through the heat dissipation window can be avoided.
Furthermore, a limiting block for preventing the water tank from moving is fixedly arranged on the sliding rail, and a water outlet is formed in the bottom of the water tank.
Has the advantages that: the water tank can stop moving when reaching the position of the limiting block, and the limiting block can avoid the problem that the supporting piece is damaged due to excessive downward movement of the water tank; the water outlet can discharge rainwater in the water tank, and after the rainwater in the water tank is completely discharged, the water tank can reset under the action of the supporting piece, so that the waterproof curtain is folded to expose the heat dissipation window, and heat dissipation of the transformer can be continued.
Further, the cabinet body is also internally provided with a heat dissipation pipeline, a water inlet of the heat dissipation pipeline is communicated with a water outlet of the water tank, and a water outlet of the heat dissipation pipeline is positioned outside the cabinet body.
When the waterproof curtain completely shelters the heat dissipation window, the heat in the cabinet body cannot be dissipated, and the transformer is easily burnt due to overheating. Rainwater collected in the water tank can flow to the water inlets of the radiating pipes through the water outlets, flow in the radiating pipes and are finally discharged from the water outlets of the radiating pipes.
Has the advantages that: the heat in the cabinet body can be taken away by the flowing process of the rainwater in the pipeline, the function of heat dissipation of the cabinet body is achieved, and the transformer is prevented from breaking down due to overheating.
Further, the upper cover is an arc surface with a high middle part and low two sides, and the horizontal projection of the upper cover covers the horizontal projection of the box body.
Has the advantages that: the upper cover is wider than the box body, so that the whole rainproof effect of the device is facilitated, the upper cover adopts the cambered surface design with high middle and low two sides, rainwater can flow down along the cambered surface, and the rainwater collection of the water tank is facilitated.
Furthermore, a dust screen is fixedly arranged at the position of the heat dissipation window on the cabinet body.
Has the advantages that: the dust screen can shelter from the dust outside the heat dissipation window, prevents that the dust from getting into the internal portion of cabinet through the heat dissipation window, avoids the external dust of cabinet to influence the normal work of transformer.
Further, the support member is a spring.
Has the advantages that: the spring is cheap and works stably.
Drawings
Fig. 1 is a schematic structural diagram of a dustproof heat dissipation apparatus for a workshop transformer according to a first embodiment of the present invention;
fig. 2 is a side sectional view of a water tank of the dustproof heat dissipation device according to the first embodiment of the present invention when rainwater is not collected;
fig. 3 is a side sectional view of a water tank of the dustproof heat dissipation apparatus according to the first embodiment of the present invention when collecting rainwater;
fig. 4 is a schematic structural diagram of a flow rate control device according to a second embodiment of the present invention.
Detailed Description
The following is further detailed by the specific embodiments:
reference numerals in the drawings of the specification include: the cabinet comprises a cabinet body 1, an upper cover 11, a cabinet door 12, a heat dissipation window 2, a base 31, a sliding rail 32, a water tank 33, a positioning block 34, a first connecting block 53, a scroll 41, a waterproof curtain 42, a second connecting block 43, a connecting rope 5, a fixed pulley 51, a heat dissipation pipeline 6, a folding plate 61, a spring 62, an air cylinder 63 and a piston rod 64.
The first embodiment is as follows:
as shown in fig. 1: a dustproof heat abstractor for workshop transformer, including the cabinet body 1, the internal space that is equipped with the installation transformer of cabinet, the front side of the cabinet body 1 is equipped with cabinet door 12, the top fixedly connected with upper cover 11 of the cabinet body 1, upper cover 11 is middle high, the low cambered surface in both sides, and the horizontal projection of upper cover 11 covers the horizontal projection of the cabinet body 1. The left and right sides of the cabinet body 1 has all been seted up the heat dissipation window 2, and the position department fixedly connected with dust screen that lies in the heat dissipation window 2 on the cabinet body 1, the dust screen can cover the heat dissipation window 2 completely.
The inboard of heat dissipation window 2 is equipped with waterproofing mechanism, and the outside of heat dissipation window 2 is equipped with rainwater and collects the mechanism.
As shown in fig. 2 and 3: waterproof mechanism, including being located 2 bottoms of heat dissipation window and with cabinet body 1 inside wall fixed connection's reel 41, the winding of curling on the reel 41 has waterproof curtain 42, and the waterproof curtain 42 is driven to expand or receive in the pivoted of reel 41 can shelter from heat dissipation window 2 completely when waterproof curtain 42 expandes completely, and in this embodiment, waterproof curtain 42 adopts the nylon material to make and forms.
As shown in fig. 1 and 2: mechanism is collected to rainwater, including the base 31 that is located 2 bottoms of heat dissipation window and sets up with 1 lateral wall fixed connection's of the cabinet body level, the equal fixedly connected with in upper end and the base vertically slide rail 32 at both ends about base 31, still including the water tank 33 that can collect the 11 rainwater of upper cover, the inboard fixedly connected with slider of water tank 33, water tank 33 passes through slider and slide rail 32 sliding fit, the position fixedly connected with locating piece 34 that lies in the water tank 33 downside on the slide rail 32, locating piece 34 is used for restricting water tank 33 and continues the lapse, fixedly connected with support piece between the slider of water tank 33 and the base 31.
As shown in fig. 2 and 3: the first connecting block 53 of intermediate position fixedly connected with of water tank 33, the intermediate position fixedly connected with second connecting block 43 of waterproof curtain 42, be equipped with between first connecting block 53 and second connecting block 43 and connect rope 5, the both ends of connecting rope 5 respectively with first connecting block 53 and second connecting block 43 fixed connection, lie in on the cabinet body 1 inside wall and connect 5 position departments of rope and set firmly fixed pulley 51, connect rope 5 and fixed pulley 51 sliding fit. In this embodiment, the connection rope 5 may be an existing nylon rope.
The supporting member is an elastic member for completely exposing the heat dissipation window 2 by winding the waterproof curtain 42 around the winding shaft 41 by the connection cord 5 when the water tank 33 is in a non-water state, and for pulling the waterproof curtain 42 to close the heat dissipation window by the connection cord 5 when the water tank 33 is in a full-water state. The support member in this embodiment is an existing compression spring.
A drain port is opened at the bottom of the water tank 33 for completely draining the water in the water tank 33. Still be equipped with heat dissipation pipeline 6 in the cabinet body 1, heat dissipation pipeline 6 fixed mounting is on the bottom surface of the cabinet body 1, and the water inlet of heat dissipation pipeline 6 communicates with the outlet of water tank 33 bottom, and the delivery port of heat dissipation pipeline 6 is located the cabinet body 1 outsidely, can be with the log raft play of water inlet outside the cabinet body 1, and heat dissipation pipeline 6 needs ninety minutes with the rainwater of water tank all flows out.
The working process of the embodiment:
1) transformer heat dissipation
With transformer fixed mounting in the cabinet body 1, waterproof curtain closes completely during daily use (as shown in fig. 2), and the transformer carries out the convection current with external air through heat dissipation window 2 on the cabinet body 1, realizes the heat dissipation of transformer, and the dust screen can also prevent that the dust from getting into the cabinet internal, realizes dirt-proof function.
2) Weather of thunderstorm
When meetting thunderstorm weather, the upper cover 11 of the cabinet body 1 can shelter from the rainwater for the cabinet body 1, the rainwater passes through upper cover 11 and collects in the water tank 33, the quality of rainwater has increased the total quality of water tank 33, water tank 33 can compress the compression spring between water tank 33 and the base 31 because the quality increases, water tank 33 can be along the vertical downstream of slide rail 32 under the pressure of rainwater, the motion of water tank 33 can move and connect 5 movements of rope, the motion of connecting rope 5 can move waterproof curtain 42 and the motion of reel 41: the waterproof curtain 42 moves vertically upward, and the reel 41 rotates by the movement of the waterproof curtain 42. The waterproof curtain 42 is unfolded along with the movement of the water tank 33, and the movement of the water tank 33 is stopped when the water tank 33 moves to the position of the positioning block 34, at the moment, the waterproof curtain 42 is also completely unfolded, so that the heat dissipation window 2 (shown in fig. 3) can be completely shielded, and rainwater is prevented from entering the cabinet body 1 through the heat dissipation window 2 to influence the normal operation of the transformer.
3) When the waterproof curtain 42 completely covers the heat dissipation window 2, the heat in the cabinet 1 cannot be dissipated. Rainwater collected in the water tank 33 can flow to the water inlets of the radiating pipes through the water outlets, and finally flows in the radiating pipes 6 and is discharged from the water outlets of the radiating pipes 6, heat in the cabinet body 1 can be taken away in the flowing process of the rainwater in the pipes, the radiating function of the cabinet body 1 is achieved, and the transformer is prevented from being broken down due to overheating.
Example two:
compared with the first embodiment, the present embodiment is different only in the internal structure of the heat dissipation pipe.
A flow speed control device is arranged at the position of the water outlet of the heat dissipation pipeline 6,
as shown in fig. 4: the flow rate control device comprises a folding plate 61 and an air cylinder 63, wherein the folding plate 61 is located inside the heat dissipation pipeline 6, the air cylinder 63 is provided with a piston rod 64, a spring 62 is fixedly arranged between the folding plates 61, the right end of the folding plate 61 is fixedly connected with the inside of the heat dissipation pipeline 6, the left end of the heat dissipation pipeline 6 is fixedly connected with the piston rod 64 of the air cylinder 63, and the air cylinder 63 is fixedly arranged inside the heat dissipation pipeline 6.
The working process of the embodiment:
when the temperature in the cabinet body 1 rises, the air in the air cylinder 63 is thermally expanded to push the folding plate 61 to be folded, and the area of the folding plate 61 for shielding the water flow is reduced.
Has the advantages that: the heat dissipation duct 6 adjusts the size of this opening according to the heat inside the cabinet 1: when the waterproof curtain 42 completely covers the heat dissipation window 2, if the transformer in the cabinet body 1 generates heat seriously, the aperture of the drain hole is enlarged, so that on one hand, the heat dissipation can be realized quickly, on the other hand, the drainage of rainwater can be accelerated, so that the waterproof curtain 42 is restored and opened by the water tank 33, and the heat dissipation capability of the cabinet body 1 is improved; if the transformer in the cabinet body 1 generates less heat, the aperture of the water outlet is small, the water tank 33 is reset slowly, and the waterproof curtain 42 is opened slowly to continuously dissipate heat of the transformer.
The foregoing are merely exemplary embodiments of the present invention, and no attempt is made to show structural details of the invention in more detail than is necessary for the fundamental understanding of the art, the description taken with the drawings making apparent to those skilled in the art how the several forms of the invention may be embodied in practice with the teachings of the invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (5)
1. A dustproof heat abstractor for workshop transformer, including the cabinet door that is used for installing the cabinet body of transformer, the cubical switchboard body and cover in the upper cover on cabinet body top, seted up heat dissipation window on the cabinet side wall, its characterized in that:
the inner side wall of the cabinet body, which is positioned at the side of the upper heat dissipation window, is provided with a waterproof mechanism, and the waterproof mechanism comprises a scroll fixedly arranged at the bottom end of the cabinet body and a waterproof curtain curled on the scroll; the outer side wall of the cabinet body, which is positioned at the side of the heat dissipation window, is provided with a rainwater collecting mechanism, the rainwater collecting mechanism comprises a base, a sliding rail and a water tank, the base is positioned at the bottom end of the heat dissipation window and is fixedly connected with the cabinet body, the sliding rail is fixedly arranged on the base, the water tank is used for collecting rainwater on the upper cover, the water tank is in sliding fit with the sliding rail, and a supporting piece;
a connecting rope is fixedly arranged on the water tank, the free end of the connecting rope penetrates through the side wall of the cabinet body to be fixedly connected with the waterproof curtain, a pulley is fixedly arranged on the side wall of the cabinet body at the position of the connecting rope, and the connecting rope is in sliding fit with the fixed pulley;
the supporting piece is an elastic element which enables the waterproof curtain to be curled on the reel to enable the heat dissipation window to be completely exposed through the connecting rope when the water tank is in a water-free state, and pulls the waterproof curtain to seal the heat dissipation window through the connecting rope when the water tank is in a water-full state;
a heat dissipation pipeline is also arranged in the cabinet body, a water inlet of the heat dissipation pipeline is communicated with a water outlet of the water tank, and a water outlet of the heat dissipation pipeline is positioned outside the cabinet body;
the delivery port position department of heat dissipation pipeline is equipped with flow rate control device, and flow rate control device has set firmly the spring including being located the inside folded sheet of heat dissipation pipeline and the cylinder of taking the piston rod between the folded sheet, the right-hand member and the inside fixed connection of heat dissipation pipeline of folded sheet, the left end of heat dissipation pipeline and the piston rod fixed connection of cylinder, and the cylinder sets firmly inside the heat dissipation pipeline.
2. The dustproof heat dissipation device for the workshop transformer according to claim 1, wherein: a limiting block for limiting the movement of the water tank is fixedly arranged on the sliding rail, and a water outlet is formed in the bottom of the water tank.
3. The dustproof heat dissipation device for the workshop transformer according to claim 2, wherein: the upper cover is a cambered surface with a high middle part and low two sides, and the horizontal projection of the upper cover covers the horizontal projection of the cabinet body.
4. The dustproof heat dissipation device for the workshop transformer according to claim 3, wherein: the outer side wall of the cabinet body is fixedly provided with a dustproof net for covering the heat radiation window.
5. The dustproof heat dissipation device for the workshop transformer according to claim 4, wherein: the support member is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577733.6A CN109494044B (en) | 2018-12-20 | 2018-12-20 | Dustproof heat dissipation device for workshop transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577733.6A CN109494044B (en) | 2018-12-20 | 2018-12-20 | Dustproof heat dissipation device for workshop transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109494044A CN109494044A (en) | 2019-03-19 |
| CN109494044B true CN109494044B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811577733.6A Active CN109494044B (en) | 2018-12-20 | 2018-12-20 | Dustproof heat dissipation device for workshop transformer |
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| CN (1) | CN109494044B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416892B (en) * | 2019-07-23 | 2021-03-02 | 安徽君锐电力设备有限公司 | Moisture-proof outdoor power distribution cabinet box |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204754712U (en) * | 2015-02-03 | 2015-11-11 | 冯晓阳 | Automatic rain curtain |
| CN205944824U (en) * | 2016-08-25 | 2017-02-08 | 天津聚新能科技发展有限公司 | Waterproof box |
| CN106684731A (en) * | 2016-12-23 | 2017-05-17 | 广西芮芽科技有限公司 | Outdoor box-type protection and heat dissipation device for transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593032A (en) * | 2018-05-24 | 2018-09-28 | 毛杰 | A kind of novel valve control water meter device |
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2018
- 2018-12-20 CN CN201811577733.6A patent/CN109494044B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204754712U (en) * | 2015-02-03 | 2015-11-11 | 冯晓阳 | Automatic rain curtain |
| CN205944824U (en) * | 2016-08-25 | 2017-02-08 | 天津聚新能科技发展有限公司 | Waterproof box |
| CN106684731A (en) * | 2016-12-23 | 2017-05-17 | 广西芮芽科技有限公司 | Outdoor box-type protection and heat dissipation device for transformer |
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| CN109494044A (en) | 2019-03-19 |
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Application publication date: 20190319 Assignee: NINGBO HIGH-TECH ZONE SHENTAIDE MACHINERY EQUIPMENT Co.,Ltd. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000231 Denomination of invention: Dust proof heat radiating device for workshop transformer Granted publication date: 20200414 License type: Common License Record date: 20210904 Application publication date: 20190319 Assignee: NINGBO LONGRUI MACHINERY MANUFACTURE Co.,Ltd. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000229 Denomination of invention: Dust proof heat radiating device for workshop transformer Granted publication date: 20200414 License type: Common License Record date: 20210903 Application publication date: 20190319 Assignee: NINGBO DESHEN MACHINERY EQUIPMENT Co.,Ltd. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000252 Denomination of invention: Dust proof heat radiating device for workshop transformer Granted publication date: 20200414 License type: Common License Record date: 20210904 |
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Assignee: NINGBO HIGH-TECH ZONE SHENTAIDE MACHINERY EQUIPMENT Co.,Ltd. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY CO.,LTD. Contract record no.: X2021330000231 Date of cancellation: 20240220 Assignee: NINGBO LONGRUI MACHINERY MANUFACTURE CO.,LTD. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY CO.,LTD. Contract record no.: X2021330000229 Date of cancellation: 20240220 Assignee: NINGBO DESHEN MACHINERY EQUIPMENT Co.,Ltd. Assignor: XIANGSHAN DUIPENG ELECTRONIC TECHNOLOGY CO.,LTD. Contract record no.: X2021330000252 Date of cancellation: 20240220 |