CN216478049U - Cooling fan's mounting structure among medium-voltage dry-type transformer - Google Patents
Cooling fan's mounting structure among medium-voltage dry-type transformer Download PDFInfo
- Publication number
- CN216478049U CN216478049U CN202121930169.9U CN202121930169U CN216478049U CN 216478049 U CN216478049 U CN 216478049U CN 202121930169 U CN202121930169 U CN 202121930169U CN 216478049 U CN216478049 U CN 216478049U
- Authority
- CN
- China
- Prior art keywords
- guide rail
- cooling fan
- fan
- dry
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Transformer Cooling (AREA)
Abstract
The utility model discloses an installation structure of a cooling fan in a medium-voltage dry-type transformer.A rectangular hole is cut at the lower end part of the outer vertical surface of an outer metal cage of the dry-type transformer, and a pull-type fan assembly is arranged in the hole; the drawing type fan assembly comprises two guide rail assemblies which are arranged in parallel relatively and can be drawn in the hole, the guide rail assemblies are fixedly connected with the dry air cooler, one outward ends of the guide rail assemblies are fixedly provided with pull plates which can block the opening of the hole in the vertical direction, and the upper ends of the pull plates are fixed on the guide rail assemblies through inclined supports to form a triangular stable structure; the dry air cooler is connected to the transformer equipment through a drag chain cable. The bending degree of the drag chain cable in back-and-forth drawing is always kept consistent, so that the scratch and excessive bending of the cable in the drawing process can be prevented, the smoothness is ensured, and the drawing type design ensures the smooth maintenance of the fan.
Description
Technical Field
The utility model belongs to the technical field of high-speed wire rolling, and particularly relates to a mounting structure of a cooling fan in a medium-voltage dry-type transformer.
Background
At present, the dry type transformer cooling fan is installed in a mode that the dry type transformer cooling fan is fixed below the dry type transformer and the pressure side coil and is sealed in the metal cage, so that the defect elimination and fault elimination and replacement of the cooling fan are carried out by means of the shutdown dry type transformer, and the cooling efficiency and the service life of the dry type transformer are influenced to a certain extent.
The medium-voltage dry-type transformer plays a role of a central power hub in each factory distribution system, and the safety and the reliability of the operation of the medium-voltage dry-type transformer directly influence the safety of partial distribution systems and even the operation of the whole factory. In recent years, due to the rapid development and application of dry-type transformers, the requirements for safety and reliability of dry-type transformers are also increasing. The temperature rise is an important factor directly causing the insulation performance and the service life of the dry-type transformer, and the dry-type transformer mainly adopts two cooling modes of air self-cooling and forced air cooling. The forced air cooling can enhance the loading capacity of the dry type transformer by 23-27%, so that the forced air cooling is widely applied, and the forced air cooling mode is divided into a bottom blowing mode, a top pumping mode and a bottom blowing and top pumping mode according to different installation modes of fans. The most effective mode is a bottom blowing and top pumping mode, but in view of the complicated installation form and practical application, the bottom blowing mode is widely applied at present. Cold air fed in through the bottom absorbs heat generated by the winding when passing through the surface of the winding, and the strip-shaped wedge-shaped heat dissipation holes are generally arranged outside the outer casing of the transformer, so that hot air absorbing heat is discharged outside the outer casing under the action of lift force and upward blowing force of the bottom fan, and the circulating cooling effect is achieved.
The influence of temperature rise of the dry-type transformer is briefly researched by combining a cooling mode of the dry-type transformer, and the practical significance of the improvement of the installation form of the bottom fan air supply type cooling commonly applied at the present stage is discussed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an installation structure of a cooling fan in a medium-voltage dry-type transformer, which solves the problems that the conventional cooling fan is inconvenient to maintain and overhaul, and further the cooling efficiency, the loading capacity and the service life of the dry-type transformer are influenced.
The technical scheme adopted by the utility model is as follows: a rectangular hole is cut at the lower end part of the outer vertical surface of an outer metal cage of a medium-voltage dry-type transformer, and a pull-out type fan assembly is arranged in the hole;
the drawing fan assembly comprises two guide rail assemblies which are arranged in parallel relatively and can be drawn in the hole, the guide rail assemblies are fixedly connected with the dry air cooler, one outward ends of the guide rail assemblies are fixedly provided with pull plates which can block the opening of the hole in the vertical direction, and the upper ends of the pull plates are fixed on the guide rail assemblies through inclined supports to form a triangular stable structure; the dry cooling fan is connected to the transformer equipment through a drag chain cable.
The present invention is also characterized in that,
the guide rail assembly comprises a guide rail a and a guide rail b which are matched with each other to slide, the guide rail b is fixed at the bottom of the hole, and the dry air cooler is fixed at one end of the guide rail a far away from the pulling plate; the guide rail a and the guide rail b are matched and slide through rollers.
The pulling plate is a resin transparent plate and is provided with a handle.
The dry cooling fan is fixed on the guide rail a in a naked double mode.
The power supply of the dry cooling fan is connected in a power receiving contact pin type and is in contact with the drag chain cable.
The lower parts of the guide rails a and b are hollowed out to improve the air exhaust effect.
The holes arranged on the outer vertical surface of the metal cage are 6, and the split door of the original metal cage needs to be lifted and transformed for the holes in the middle positions of two sides so as to meet the requirement of additionally arranging the size of the spacing opening.
Install undercurrent relay alarm device additional in every cooling blower's the electric circuit, undercurrent relay alarm device directly links PLC and realizes monitoring the running state of every cooling blower, also can conceal whether normal operating in inside fan through the audio-visual discovery of the alarm lamp on the relay body.
The utility model has the beneficial effects that: according to the mounting structure of the cooling fan in the medium-voltage dry-type transformer, the inclined support is connected between the pulling plate and the guide rail assembly to form a triangular stable structure, so that the stability of the structure is ensured. Two sliding rails are formed by a guide rail component which is arranged in a hole in an overhead mode, a drag chain cable is arranged on the side of each sliding rail, a fan is stably installed above a cooling fan, the fan is required to be balanced with the horizontal plane during installation, finally, the conversion of the fan on the operation and maintenance positions is realized through the drawing function of a pulling plate and the guide rail component, the improvement on a metal cage is mainly focused on the improvement on a split door, the original split door is cut through machining, the edge of the split door is sunk, the position of a threshold is heightened by a white steel plate, a sliding door is arranged outside the framework, the structure is similar to an outer door of a drawer, the power supply connection mode is changed into drag chain cable connection from original wire connection, and the bending degree of the drag chain cable in the back-and-forth drawing process is always kept consistent, so that the rubbing and excessive bending of the cable in the drawing process can be prevented, the smoothness is ensured, and different voltages can be brought according to the voltage level of the fan, the wiring positions are uniformly arranged on the right side of the fan, so that the drawer can slide between the working position and the maintenance position, and the internal fan can be reliably powered.
Drawings
Fig. 1 is a schematic structural diagram of a cooling fan mounting structure in a medium-voltage dry-type transformer according to the present invention;
in the figure, 1 is a pulling plate, 2 is an inclined support, 3 is a cooling fan, 4 is a guide rail a, 5 is a drag chain cable, and 6 is a guide rail b.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The mounting structure of the cooling fan in the medium-voltage dry-type transformer is shown in figure 1, a rectangular hole is cut at the lower end part of the outer vertical surface of an outer metal cage of the dry-type transformer, and a pull-out fan assembly is arranged in the hole;
the drawing fan assembly comprises two guide rail assemblies which are arranged in parallel relatively and can be drawn in the hole, a cooling fan 3 is fixedly connected to the guide rail assemblies, a drawing plate 1 which can block the opening of the hole in the vertical direction is fixed to one end, facing outwards, of each guide rail assembly, and the upper ends of the drawing plates 1 are fixed to the guide rail assemblies through inclined supports 2 to form a triangular stable structure; the cooling fan 3 is connected to the transformer equipment via a tow chain cable 5.
The guide rail assembly comprises a guide rail a4 and a guide rail b6 which are matched with each other to slide, a guide rail b6 is fixed at the bottom of the hole, and the cooling fan 3 is fixed at one end of the guide rail a4, which is far away from the pulling plate 1; the guide rail a4 and the guide rail b6 are matched and slide through rollers.
The pulling plate 1 is a resin transparent plate and is provided with a handle.
The cooling fan 3 is fixed on the guide rail a4 by a bare double.
The power supply of the cooling fan 3 is connected in a power receiving contact pin type and is in contact with the drag chain cable 5.
The lower parts of the guide rail a4 and the guide rail b6 are hollowed out to improve the air exhaust effect.
The holes arranged on the outer vertical surface of the metal cage are 6, and the split door of the original metal cage needs to be lifted and transformed for the holes in the middle positions of two sides so as to meet the requirement of additionally arranging the size of the spacing opening.
The cooling fans are connected in parallel, and the fault alarm is that overcurrent protectors are arranged at the main power supply of 6 fans, and when a single fan fails, overload is reported. Install undercurrent relay alarm device additional in every cooling blower's the electric circuit, undercurrent relay alarm device directly links PLC and realizes monitoring the running state of every cooling blower, also can conceal whether normal operating in inside fan through the audio-visual discovery of the alarm lamp on the relay body, but the very first time of maintainer discovery with confirm the position of trouble fan, in time overhaul the operation.
The mounting structure mode of the cooling fan in the medium-voltage dry-type transformer is as follows:
according to the utility model, the cooling fan is arranged in a group of sliding guide rail assemblies, and the inclined supports 2 are connected to the pulling plate 1 and the guide rail assemblies to form a triangular stable structure, so that the stability of the cooling fan is ensured. Two sliding rails are formed by a guide rail component which is arranged in a hole in an overhead mode, a drag chain cable is arranged on the side of each sliding rail, a fan is stably installed above a cooling fan, the fan is required to be balanced with the horizontal plane during installation, finally, the conversion of the fan on the operation and maintenance positions is realized through the drawing function of a pulling plate and the guide rail component, the improvement on a metal cage is mainly focused on the improvement on a split door, the original split door is cut through machining, the edge of the split door is sunk, the position of a threshold is heightened by a white steel plate, a sliding door is arranged outside the framework, the structure is similar to an outer door of a drawer, the power supply connection mode is changed into drag chain cable connection from original wire connection, and the bending degree of the drag chain cable in the back-and-forth drawing process is always kept consistent, so that the rubbing and excessive bending of the cable in the drawing process can be prevented, the smoothness is ensured, and different voltages can be brought according to the voltage level of the fan, the wiring positions are uniformly arranged on the right side of the fan, so that the drawer can slide between the working position and the maintenance position, and the internal fan can be reliably powered.
Claims (8)
1. The mounting structure of the cooling fan in the medium-voltage dry-type transformer is characterized in that a rectangular hole is cut at the lower end part of the outer vertical surface of an outer metal cage of the dry-type transformer, and a pull-out fan assembly is arranged in the hole;
the drawing fan assembly comprises two guide rail assemblies which are arranged in parallel relatively and can be drawn in the hole, a cooling fan (3) is fixedly connected to the guide rail assemblies, a pull plate (1) capable of blocking the opening of the hole in the vertical direction is fixed to one outward end of each guide rail assembly, and the upper end of each pull plate (1) is fixed to the corresponding guide rail assembly through an inclined support (2) to form a triangular stable structure; and the cooling fan (3) is connected to the transformer equipment through a drag chain cable (5).
2. The mounting structure of the cooling fan in the medium voltage dry type transformer according to claim 1, wherein the guide rail assembly comprises a guide rail a (4) and a guide rail b (6) which are matched with each other and slide, the guide rail b (6) is fixed at the bottom of the hole, and the cooling fan (3) is fixed at one end of the guide rail a (4) far away from the pulling plate (1); the guide rail a (4) and the guide rail b (6) slide in a matched mode through rollers.
3. The structure for mounting a cooling fan in a medium voltage dry transformer as claimed in claim 1 wherein the pulling plate (1) is a transparent plate made of resin and equipped with a handle.
4. The structure for mounting a cooling fan in a medium voltage dry transformer according to claim 3, wherein the cooling fan (3) is fixed on the guide rail a (4) in a bare pair.
5. The structure for mounting a cooling fan in a medium voltage dry transformer according to claim 1, wherein the cooling fan (3) is powered by a power receiving pin type and contacts the towline cable (5).
6. The structure for installing the cooling fan in the medium voltage dry type transformer according to claim 2, wherein the guide rails a (4) and b (6) are hollowed out below to improve the air exhaust effect.
7. The structure for mounting a cooling fan in a medium voltage dry transformer as claimed in claim 1, wherein there are 6 holes.
8. The mounting structure of the cooling fan in the medium-voltage dry-type transformer according to claim 1, characterized in that an under-current relay alarm device is additionally installed in an electrical loop of each cooling fan (3), the under-current relay alarm device is directly connected with a PLC to monitor the operation state of each cooling fan, and whether the fan hidden inside is normally operated can be visually found through an alarm lamp on a relay body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121930169.9U CN216478049U (en) | 2021-08-17 | 2021-08-17 | Cooling fan's mounting structure among medium-voltage dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121930169.9U CN216478049U (en) | 2021-08-17 | 2021-08-17 | Cooling fan's mounting structure among medium-voltage dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216478049U true CN216478049U (en) | 2022-05-10 |
Family
ID=81433034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121930169.9U Active CN216478049U (en) | 2021-08-17 | 2021-08-17 | Cooling fan's mounting structure among medium-voltage dry-type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216478049U (en) |
-
2021
- 2021-08-17 CN CN202121930169.9U patent/CN216478049U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203632054U (en) | Step-type mobile support for switchgear | |
| CN115083754B (en) | Dry-type transformer with overload protection structure | |
| CN216478049U (en) | Cooling fan's mounting structure among medium-voltage dry-type transformer | |
| CN216749543U (en) | Cooling device of dry-type transformer | |
| CN115620991A (en) | Transformer convenient to equipment | |
| CN210283919U (en) | Rail engineering truck with contact net power supply system | |
| CN217983003U (en) | Dry-type transformer does not cut off power supply and overhauls cooling blower device | |
| CN207691304U (en) | A kind of drawer of low voltage drawing-out switching carbinet | |
| CN108800541B (en) | Intelligent variable-frequency electromagnetic heating uninterrupted heat supply unit | |
| CN207250283U (en) | A kind of energy-saving and environment-friendly dry-type transformer | |
| CN215183399U (en) | Cooling device for oil-immersed transformer | |
| CN215118591U (en) | Energy-saving dry-type transformer | |
| CN112217424A (en) | Cooling fan of medium-voltage frequency converter cabinet and control device and method of air conditioner | |
| CN216016048U (en) | High-voltage switch cabinet with insulating bottom plate | |
| CN219419865U (en) | Switch board convenient to overhaul | |
| CN107910799A (en) | A kind of drawer of low voltage drawing-out switching carbinet | |
| CN213424781U (en) | Optimized excitation variable cooling system | |
| CN114572834A (en) | Crane system and prefabricated substation for crane | |
| CN221040774U (en) | Pin type transformer | |
| CN215453642U (en) | High-frequency power supply for electric dust collector with self-cooled transformer | |
| CN217956365U (en) | Interphase isolation insulation assembly for high-voltage switch cabinet | |
| CN210723775U (en) | Novel combined high-voltage control cabinet | |
| CN210268736U (en) | Intelligent power distribution and utilization state detection device | |
| CN215527396U (en) | Transformer installation device suitable for electric power engineering | |
| CN217640895U (en) | Dry-type transformer does not have a power failure and changes fan device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |