CN209912670U

CN209912670U - Combined exhaust fan for dry-type transformer

Info

Publication number: CN209912670U
Application number: CN201920672965.3U
Authority: CN
Inventors: 张福昌; 赵良雄
Original assignee: Sichuan Light Power Equipment Co Ltd
Current assignee: Sichuan Light Power Equipment Co Ltd
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-01-07
Anticipated expiration: 2029-05-09

Abstract

A combined exhaust fan for a dry-type transformer relates to the technical field of transformers. Including motor, shaft coupling, convulsions subassembly, collection flow box and many tuber pipes. The rotating part of the air draft assembly is in transmission connection with the motor through a coupling, the confluence box is integrally connected with the air draft assembly, and an air outlet of the confluence box is communicated with an air suction opening of the air draft assembly. The tuber pipe all communicates with the inner chamber of converging the flow box, and the tuber pipe is including being used for carrying out the heat transfer section of heat exchange with the winding of transformer and being used for the transport section of high temperature air current to converging the flow box and carrying, and the transport section parcel has the insulating layer. The air inlet of the air pipe is provided with a dust cover, and the air pipe is made of an insulating heat conduction material. The cooling device is simple in structure, convenient to use, capable of being used for cooling and radiating the dry-type transformer, high in radiating efficiency, good in cooling effect, and excellent in stability and reliability.

Description

Combined exhaust fan for dry-type transformer

Technical Field

The utility model relates to a transformer technical field particularly, relates to a combination formula air exhauster for dry-type transformer.

Background

Although the technology of the dry-type transformer has been developed greatly in recent years, the development of accessories of the dry-type transformer is slow, and particularly, a heat dissipation fan for the dry-type transformer is basically a top-blowing type blower, and the fan can only blow to the surface of a transformer coil, so that the heat dissipation efficiency is low, and the heat dissipation effect is poor.

In view of this, the present application is specifically made.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modular air exhauster, its simple structure, convenient to use can be used for cooling down the heat dissipation to dry-type transformer, and the radiating efficiency is high, and the cooling is effectual, and stability and good reliability.

The embodiment of the utility model is realized like this:

a combined suction fan for a dry-type transformer, comprising: motor, shaft coupling, convulsions subassembly, collection flow box and many tuber pipes. The rotating part of the air draft assembly is in transmission connection with the motor through a coupling, the confluence box is integrally connected with the air draft assembly, and an air outlet of the confluence box is communicated with an air suction opening of the air draft assembly. The tuber pipe all communicates with the inner chamber of converging the flow box, and the tuber pipe is including being used for carrying out the heat transfer section of heat exchange with the winding of transformer and being used for the transport section of high temperature air current to converging the flow box and carrying, and the transport section parcel has the insulating layer. The air inlet of the air pipe is provided with a dust cover, and the air pipe is made of an insulating heat conduction material.

Further, the one end tip that is used for being connected with the collection flow box of transport section all is perpendicular to the lateral wall setting of collection flow box, and the one end tip that is used for being connected with the collection flow box of many transport sections is the array distribution.

Further, the air outlet of convulsions subassembly is provided with flexible pipe, and flexible pipe parcel has the insulating layer.

Furthermore, the combined type exhaust fan is also provided with a shock absorption pad, the bottom of the base of the combined type exhaust fan is provided with a positioning column, and the shock absorption pad is provided with a positioning blind hole which is in interference fit with the positioning column.

Further, the air inlet end and the air outlet of the flow converging box are located on two opposite sides of the flow converging box, the air outlet of the flow converging box is provided with a first dustproof net, the bottom wall of the flow converging box is obliquely arranged, a dust outlet is formed in the low-position end of the bottom wall of the flow converging box, and a sealing cover is detachably mounted on the dust outlet.

Further, the inner cavity of the confluence box is also provided with a separation plate. The partition plate is horizontally arranged, one end of the partition plate is connected to the side wall where the air pipe is located, and the other end of the partition plate extends towards the air outlet of the confluence box. The partition plate is positioned on one side of the air pipe close to the bottom wall of the header box.

Further, the collection flow box still is equipped with the second dust screen. One end detachably of second dust screen is connected with first connecting piece, and first connecting piece articulates the one end that is close to the air outlet of the diapire of collection flow box. The other end detachably of second dust screen is connected with the second connecting piece, and the roof slidable ground cooperation of collection flow box has the slider, and the second connecting piece articulates in the slider. The air outlet direction of the air pipe faces to the net surface of the second dust screen.

Furthermore, the top wall of the header box is provided with an access hole, and the access hole is positioned on one side, far away from the air pipe, of the second dustproof net. The access opening is detachably provided with an upper cover.

Further, in the sliding process of the sliding block, the change range of the included angle between the second dustproof net and the horizontal plane is 45-70 degrees.

Further, the junction box is made of a heat insulating material.

The embodiment of the utility model provides a beneficial effect is:

the embodiment of the utility model provides a combination formula air exhauster is in the use, inlays the heat transfer section of tuber pipe in locating the winding of transformer. Under the drive of motor, convulsions subassembly begins work, and cold wind gets into the tuber pipe and continuously flows towards the convulsions subassembly by the entrance point of tuber pipe. Cold wind flows to the winding of transformer along the tuber pipe after, can take away the heat in the winding of transformer, and hot-blast edge delivery segment entering collection flow box and convulsions subassembly behind leaving the winding of transformer to be discharged from the air outlet of convulsions subassembly.

With this design, heat in the winding can be continuously conducted out, avoiding heat accumulation. Because the tuber pipe is made by insulating heat conduction material, it can be embedded inside the winding, directly cools down the high temperature district in the winding. And the conveying section of tuber pipe has the insulating layer owing to the parcel, can avoid the heat to give off around from the tuber pipe, and then avoids making the outside ambient temperature of winding too high, has reversely promoted the natural cooling of winding outer wall. Wherein, the tuber pipe extends by the collection flow box, and this makes can arrange the tuber pipe in a flexible way, can adjust the trend and the route of tuber pipe according to actual demand, and the flexibility improves greatly. All tuber pipes assemble in the collection flow box, are convenient for carry out the rectification to the air current in the tuber pipe to improve the stability of the air current that enters into in the convulsions subassembly, reduce the mechanical loss of convulsions subassembly.

Generally, the embodiment of the utility model provides a combination formula air exhauster simple structure, convenient to use can be used for cooling down the heat dissipation to dry-type transformer, and the radiating efficiency is high, and the cooling is effectual, and stability and good reliability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a first view angle of a combined type exhaust fan according to an embodiment of the present invention;

FIG. 2 is a second perspective view of the combined blower of FIG. 1;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is an enlarged view of area B of FIG. 2;

fig. 5 is an enlarged view of the region C in fig. 2.

Icon: a combined draft fan 1000; a motor 100; a coupling 200; an air extraction assembly 300; a telescoping tube 310; a combiner box 400; a first dust screen 410; a cover 421; a partition plate 430; a second dust screen 440; a first connecting member 441; a second connecting member 442; a slider 443; an upper cover 451; an air duct 500; a heat exchange section 510; a conveying section 520; a shock-absorbing pad 600; a base 700; and a positioning post 710.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1-2, the present embodiment provides a combined blower 1000 for a dry-type transformer. The combined blower 1000 comprises: motor 100, coupling 200, convulsions subassembly 300, collection flow box 400 and many tuber pipes 500.

The rotation part of the ventilation component 300 is in transmission connection with the motor 100 through a coupling 200, the collecting box 400 is integrally connected with the ventilation component 300, and an air outlet of the collecting box 400 is communicated with an air suction opening of the ventilation component 300. By such a design, the vibration of the combiner box 400 can be effectively reduced.

The air ducts 500 are all communicated with the inner cavity of the header box 400, each air duct 500 comprises a heat exchange section 510 used for carrying out heat exchange with a winding of a transformer and a conveying section 520 used for conveying high-temperature air flow to the header box 400, and the conveying section 520 is wrapped by a heat insulation layer. The air inlet of the air duct 500 is provided with a dust cover (not shown), and the air duct 500 is made of an insulating and heat-conducting material.

In use, the heat exchange section 510 of the air duct 500 is embedded in the windings of a transformer. Under the driving of the motor 100, the air draft assembly 300 starts to work, and the cool air enters the air duct 500 from the inlet end of the air duct 500 and continuously flows towards the air draft assembly 300. After cold wind flows to the winding of the transformer along the wind pipe 500, heat in the winding of the transformer can be taken away, and hot wind leaves the winding of the transformer and then enters the header box 400 and the air draft assembly 300 along the conveying section 520, and is discharged from the air outlet of the air draft assembly 300.

With this design, heat in the winding can be continuously conducted out, avoiding heat accumulation. Because the air duct 500 is made of insulating heat conducting material, it can be embedded inside the winding, directly cool the high temperature area inside the winding. And the conveying section 520 of the air pipe 500 is wrapped by the heat insulation layer, so that heat can be prevented from being dissipated to the periphery from the air pipe 500, the external environment temperature of the winding is prevented from being too high, and natural cooling of the outer wall of the winding is reversely promoted. Wherein, tuber pipe 500 is extended by collection flow box 400, and this makes can arrange in a flexible way tuber pipe 500, can adjust tuber pipe 500 trend and route according to actual demand, and the flexibility improves greatly.

All tuber pipes 500 assemble in collection flow box 400, are convenient for carry out the rectification to the air current in tuber pipe 500 to improve the stability of the air current that enters into in convulsions subassembly 300, reduce convulsions subassembly 300's mechanical loss.

Generally, the combined type exhaust fan 1000 is simple in structure, convenient to use, capable of being used for cooling and radiating the dry-type transformer, high in radiating efficiency, good in cooling effect, and excellent in stability and reliability.

In this embodiment, the end portions of the conveying sections 520 for connecting with the combiner box 400 are perpendicular to the side wall of the combiner box 400, and the end portions of the conveying sections 520 for connecting with the combiner box 400 are distributed in an array. Through this design, can promote the air current greatly and enter into the stationarity of flow box 400 when converging, and then make the hot gas flow can enter into smoothly in the convulsions subassembly 300 and be sent away, reduced the production of indiscriminate stream, reduced the loss of the blade in the convulsions subassembly 300.

An air outlet of the air draft assembly 300 is provided with a telescopic pipe 310, and the telescopic pipe 310 is wrapped with a heat insulation layer. Through this design, can carry hot-blast to predetermined exhaust passageway in various installation circumstances smoothly, avoid hot-blast to accumulate around the transformer.

Further, in this embodiment, the air inlet end and the air outlet of the combiner box 400 are located on opposite sides thereof, the air outlet of the combiner box 400 is provided with a first dustproof net 410, the bottom wall of the combiner box 400 is inclined, the lower end of the bottom wall of the combiner box 400 is provided with a dust outlet, and the sealing cover 421 is detachably mounted on the dust outlet. Through this design, first dust screen 410 can effectively avoid during dust and foreign particles enter into convulsions subassembly 300, prevents to cause the damage to convulsions subassembly 300. Although the air intake of tuber pipe 500 is provided with the dust cover, can avoid dust and foreign particles to get into tuber pipe 500, but along with the extension of tuber pipe 500's live time, and tuber pipe 500 is under the long-time high temperature state that is in, the possibility that drops appears in tuber pipe 500 inner wall still exists, sets up first dust screen 410 and can avoid impurity entering convulsions subassembly 300. The bottom wall and the dust outlet of the combiner box 400 are very convenient for cleaning dust and foreign particles in the combiner box 400.

The inner cavity of the combiner box 400 is further provided with a partition plate 430. The partition plate 430 is disposed horizontally, and has one end connected to the sidewall where the air duct 500 is located and the other end extending toward the air outlet of the collecting box 400. The partition plate 430 is located at one side of the air duct 500 near the bottom wall of the junction box 400. Through this design, division board 430 plays the water conservancy diversion simultaneously and separates the effect of shelves, and the hot gas flow can directly flow to first dust screen 410 more accurately on the one hand, and on the other hand can avoid effectively under the disturbance of air current, the dust and the foreign particles of deposit in collection flow box 400 diapire are blown again.

Referring to fig. 3 and 4, the junction box 400 is further provided with a second dust screen 440 in an inclined manner. One end of the second dust-proof net 440 is detachably connected with a first connecting piece 441, and the first connecting piece 441 is hinged to one end of the bottom wall of the collecting box 400 close to the air outlet. The other end of the second dust screen 440 is detachably connected with a second connector 442, a slider 443 is slidably fitted to the top wall of the junction box 400, and the second connector 442 is hinged to the slider 443. The air outlet direction of the air pipe 500 faces the net surface of the second dust screen 440. The width of the second dust screen 440 is the same as the width of the inner cavity of the combiner box 400. Through this design, second dust screen 440 can carry out prefilter to the impurity in the hot gas flow, with the diapire of the direct direction collection flow box 400 of large granule impurity, avoids causing the damage to first dust screen 410.

In addition, the sliding block 443 can slide along the top wall of the junction box 400, so that the second dust screens 440 with different lengths can be accommodated, and when the second dust screens 440 with different lengths are used, the included angles of the second dust screens 440 with respect to the horizontal plane are different. The design can further promote the flexibility of whole device, if want the major prevention large granule impurity in the air current, then can set up the contained angle of second dust screen 440 relative to the horizontal plane a little. On the other hand, the adjustability of the second connector 442 also enables adaptation to different lengths of the second dust screen 440, so that the accuracy requirement for the length of the second dust screen 440 is greatly reduced, and even if there is an error in the length of a batch of the second dust screens 440, successful installation can be achieved by adjusting the position of the slider 443. This greatly improves the adaptability of the combined exhaust fan 1000, and also improves the utilization of the defective products, avoiding waste.

In order to facilitate cleaning of the combiner box 400 and replacement of the second dust screen 440 and the first dust screen 410, a service hole is formed in the top wall of the combiner box 400, and the service hole is located on one side, away from the air duct 500, of the second dust screen 440. The service opening is detachably mounted with an upper cover 451.

In this embodiment, during the sliding of the slider 443, the angle between the second dust screen 440 and the horizontal plane varies from 45 ° to 70 °. And the junction box 400 is made of an insulating material.

Referring to fig. 5, the combined type exhaust fan 1000 further has a shock absorbing pad 600, a positioning column 710 is disposed at the bottom of the base 700 of the combined type exhaust fan 1000, and the shock absorbing pad 600 is provided with a positioning blind hole for interference fit with the positioning column 710. Through the design, the positioning column 710 and the positioning blind holes are matched to effectively share the transverse stress of the mounting bolt, and the mounting bolt has extra buffering capacity on transverse vibration.

To sum up, combination formula air exhauster 1000 simple structure, convenient to use can be used for cooling down the heat dissipation to dry-type transformer, and the radiating efficiency is high, and the cooling is effectual, and stability and reliability are good.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined extractor fan for a dry transformer, comprising: the air conditioner comprises a motor, a coupling, an air draft assembly, a confluence box and a plurality of air pipes;

the rotating part of the air draft assembly is in transmission connection with the motor through the coupling, the confluence box is integrally connected with the air draft assembly, and an air outlet of the confluence box is communicated with an air suction opening of the air draft assembly; the air pipes are communicated with the inner cavity of the confluence box and comprise heat exchange sections for exchanging heat with windings of the transformer and conveying sections for conveying high-temperature air flow to the confluence box, and the conveying sections are wrapped with heat insulation layers; the air inlet of the air pipe is provided with a dust cover, and the air pipe is made of an insulating heat conduction material.

2. The combined exhaust fan according to claim 1, wherein the end portions of the conveying sections for connecting with the junction box are arranged perpendicular to the side walls of the junction box, and the end portions of the conveying sections for connecting with the junction box are distributed in an array.

3. The combined exhaust fan according to claim 1, wherein an air outlet of the exhaust assembly is provided with a telescopic pipe, and the telescopic pipe is wrapped with a heat insulation layer.

4. The combined exhaust fan according to claim 1, further comprising a shock absorption pad, wherein the bottom of the base of the combined exhaust fan is provided with a positioning column, and the shock absorption pad is provided with a positioning blind hole for interference fit with the positioning column.

5. The combined exhaust fan according to claim 1, wherein the air inlet end and the air outlet of the confluence box are arranged on two opposite sides of the confluence box, the air outlet of the confluence box is provided with a first dustproof net, the bottom wall of the confluence box is obliquely arranged, the lower end of the bottom wall of the confluence box is provided with a dust outlet, and a sealing cover is detachably arranged on the dust outlet.

6. The combined exhaust fan of claim 5, wherein the inner cavity of the manifold box is further provided with a partition plate; the partition plate is horizontally arranged, one end of the partition plate is connected to the side wall where the air pipe is located, and the other end of the partition plate extends towards the air outlet of the confluence box; the partition plate is positioned on one side of the air pipe close to the bottom wall of the confluence box.

7. The combined extractor of claim 6, wherein the combiner box is further provided with a second dust screen; one end of the second dust screen is detachably connected with a first connecting piece, and the first connecting piece is hinged to one end, close to the air outlet, of the bottom wall of the confluence box; the other end of the second dust screen is detachably connected with a second connecting piece, the top wall of the confluence box is slidably matched with a sliding block, and the second connecting piece is hinged to the sliding block; the air outlet direction of the air pipe faces to the net surface of the second dust screen.

8. The combined exhaust fan according to claim 7, wherein a service opening is formed in the top wall of the confluence box, and the service opening is positioned on one side, far away from the air pipe, of the second dust screen; the access hole is detachably provided with an upper cover.

9. The combined exhaust fan according to claim 8, wherein an included angle between the second dust screen and a horizontal plane is changed within a range of 45-70 degrees in a sliding process of the sliding block.

10. The combined suction fan of claim 1 wherein the manifold box is made of a thermally insulating material.