CN210565252U - Heat radiation fan for dry type transformer - Google Patents

Abstract

The utility model discloses a cooling fan for dry-type transformer, relate to transformer technical field, including left side frame and right frame, rotate in the left side frame and install the pivot, the coaxial rigid coupling of pivot one end has left side dish, install the motor with the coaxial setting of pivot in the right side frame, the rigid coupling has right side dish in the drive shaft of motor, the rigid coupling has a plurality of along the blade of pivot circumference range between left side dish and the right side dish, the rigid coupling has the interval to set up at blade outlying arc guide plate between left side frame and the right side frame, hollow rod has been cup jointed to the pivot internal rotation, be equipped with a plurality of fresh air inlet on hollow rod's the pole wall, hollow rod's one end is rotated and is connected on right side dish, hollow rod's the other end is. The utility model relates to a cooling fan for dry-type transformer has solved the technical problem that the inside dust of cooling fan is difficult to effective clearance among the prior art, the utility model discloses a dust that inside entering of cooling fan lasts the efficient clearance, has reduced the clearance degree of difficulty.

Description

Heat radiation fan for dry type transformer

Technical Field

The utility model relates to a transformer technical field, in particular to a cooling fan for dry-type transformer.

Background

The dry type transformer generally blows air continuously to dissipate heat through the cross flow fans arranged on two sides of the bottom of the dry type transformer, dust is easy to enter due to the fact that air inlet openings of the cross flow fans are large, the dust can be collected in impellers of the cross flow fans, the collected dust can occupy the inner space of the impellers and affect the air output of the cross flow fans, and partial dust can be blown to the dry type transformer after the dust is collected too much, so that the heat dissipation performance of the dry type transformer is affected.

The existing mode is that the crossflow fan is periodically disassembled to clean the internal dust, and the following problems exist in the mode:

1. the impeller is disassembled and assembled to influence the rotation balance of the impeller, so that the surge phenomenon is serious, and the service life of the cross flow fan is shortened;

2. 4~8 crossflow fans are usually installed to every dry-type transformer, and it is big to dismantle work load like this, wastes time and energy.

Disclosure of Invention

To above defect, the utility model aims at providing a cooling fan for dry-type transformer aims at solving among the prior art technical problem that the inside dust of cooling fan is difficult to effective clearance.

In order to solve the technical problem, the technical scheme of the utility model is that:

the utility model provides a cooling fan for dry-type transformer, including left frame and right frame, rotate in the frame of a left side and install the pivot, the pivot has left carousel towards the coaxial rigid coupling of one end of frame right, install the motor in the frame of the right side, the drive shaft and the coaxial setting of pivot of motor, the rigid coupling has right carousel in the drive shaft of motor, the rigid coupling has a plurality of along the blade of pivot circumference range between left carousel and the right carousel, the rigid coupling has the interval to set up at blade outlying arc guide plate between left frame and the frame of the right side, hollow rod has been cup jointed to the pivot internal rotation, be equipped with a plurality of fresh air inlet on hollow rod's the pole wall, hollow rod's one end is rotated and is connected on right carousel, hollow.

Wherein, the fresh air inlet is arranged along the axial interval of hollow rod, and along the radial dislocation set of hollow rod.

Wherein, the left frame and the right frame are connected with a protection screen plate which covers the motor.

Wherein, the bottom of left side frame and right frame all is equipped with the rubber pad.

The negative pressure dust collecting device comprises a negative pressure fan and a dust collecting box, an air inlet of the dust collecting box is communicated with the hollow rod, an air outlet of the dust collecting box is connected with an air inlet end of the negative pressure fan, and a dust isolating net for isolating the air inlet and the air outlet is arranged in the dust collecting box.

Wherein, the bottom of the dust collecting box is inserted with an inner box body, and the dust isolating net is detachably connected on the inner box body.

Wherein the negative pressure fan is a centrifugal fan.

Wherein, the left frame is fixedly connected with a protective cover for covering the negative pressure dust collecting device, and one side of the protective cover is provided with an opening.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

because the utility model discloses a cooling fan for dry-type transformer includes left frame and right frame, rotate in the frame of a left side and install the pivot, the pivot court has left carousel to the coaxial rigid coupling of one end of frame right, install the motor in the frame of the right side, the drive shaft and the coaxial setting of pivot of motor, the rigid coupling has right carousel in the drive shaft of motor, the rigid coupling has a plurality of along the blade of pivot circumference range between left carousel and the right carousel, the rigid coupling has the interval to set up at blade outlying arc guide plate between left frame and the frame of the right side, hollow rod has been cup jointed to the pivot internal rotation, be equipped with a plurality of fresh air inlet on hollow rod's the pole wall, hollow rod's one end is rotated and is connected on right carousel, hollow. Through negative pressure dust collecting device, continuous follow hollow rod in bleed (produce the negative pressure promptly) for inside dust in the impeller lasts enters into hollow rod through the air intake, reentrant negative pressure dust collecting device, thereby realize that the high efficiency of the inside dust of impeller lasts the clearance and collects.

Because the fresh air inlet is along the axial interval range of hollow pole, and along the radial dislocation set of hollow pole, realize that the fresh air inlet evenly covers on hollow pole.

Because the bottoms of the left frame and the right frame are respectively provided with the rubber pad, the damping and buffering are realized through the rubber pads, and the noise generated during the operation of the heat radiation fan is reduced.

Because the bottom of the dust collecting box is inserted with the inner box body, the dust isolating net is detachably connected to the inner box body, so that the inner box body can be detached from the dust collecting box, the box body part is connected with the insertion port in an inserted mode, the dust collecting groove is formed in the box body part, when a certain amount of dust is accumulated in the dust collecting groove, the inner box body can be detached regularly, and then the dust is cleaned. The dust-proof net is inserted on the box body part, so that the dust-proof net can be detached and cleaned independently.

To sum up, the utility model relates to a cooling fan for dry-type transformer has solved the technical problem that the inside dust of cooling fan is difficult to effective clearance among the prior art, the utility model discloses a dust that inside entering of cooling fan lasts the efficient clearance, has reduced the clearance degree of difficulty.

Drawings

Fig. 1 is a schematic structural diagram of a heat dissipation fan for a dry-type transformer according to the present invention;

FIG. 2 is a top view of FIG. 1;

3 FIG. 3 3 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 32 3; 3

FIG. 4 is a sectional view taken along line B-B of FIG. 3;

in the figure, a left frame 1, a rotating shaft 10, a right frame 2, a motor 20, an impeller 3, a left rotating disc 30, a right rotating disc 31, blades 32, an arc-shaped guide plate 4, a protection screen plate 5, a rubber pad 6, a hollow rod 7, an air inlet 70, a negative pressure dust collecting device 8, a negative pressure fan 80, a dust collecting box 81, a dust separation screen 810, an inner box body 811 and a protective cover 82.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The position that involves in this specification all uses the utility model relates to a position when being used for the normal work of cooling fan of dry-type transformer is the standard, does not restrict its storage and the position when transporting, only represents relative position relation, does not represent absolute position relation.

As shown in fig. 1, 2, 3 and 4, the heat dissipation fan for the dry-type transformer is mounted on two sides of a base of the dry-type transformer for use, and is used for continuously blowing air to the dry-type transformer to dissipate heat of the dry-type transformer. The main body of the device comprises a left frame 1 and a right frame 2, the left frame 1 and the right frame 2 are arranged in parallel at intervals, a mounting hole is arranged on the left frame 1, the mounting hole is coaxially connected with a rotating shaft 10 through a bearing, a motor 20 is arranged on the right frame 2, a driving shaft of the motor 20 is coaxially arranged with the rotating shaft 10, a left rotating disc 30 and a right rotating disc 31 are arranged between the left frame 1 and the right frame 2, the left rotating disc 30 and the right rotating disc 31 are both coaxial with the rotating shaft 10, the left rotating disc 30 is fixedly connected with the rotating shaft 10, the right rotating disc 31 is fixedly connected with the driving shaft of the motor 20, a plurality of blades 32 arranged along the circumference of the rotating shaft 10 are fixedly connected between the left rotating disc 30 and the right rotating disc 31, two ends of the blades 32 along the length direction are respectively inserted into slots on the left rotating disc 30 and the right rotating disc 31, the blades 32 are arc-shaped along the width direction, arc-shaped guide plates 4 arranged at the periphery of, wherein, the left frame 1 and the right frame 2 are connected with a protection screen 5, the protection screen 5 covers the motor 20, and the protection of the blade 32 and the motor 20 is realized. The left rotating disc 30, the right rotating disc 31 and the blades 32 form an impeller 3 of a cooling fan, the impeller 3 is driven to rotate by starting the motor 20, air flow enters from one side of the impeller 3, penetrates through the inside of the impeller 3 and is discharged from the other side of the impeller 3 along the arc-shaped guide plate 4, and therefore air blowing is achieved. In the present embodiment, a plurality of intermediate turntables are provided between the left turn table 30 and the right turn table 31. Thereby reinforcing the attachment of the blade 32.

The rotating shaft 10 is a hollow shaft, the hollow rod 7 is sleeved in the rotating shaft 10 at an inner gap, a plurality of air inlet holes 70 are formed in the rod wall of the hollow rod 7, preferably, the air inlet holes 70 are arranged at intervals along the axial direction of the hollow rod 7 and are arranged along the radial direction of the hollow rod 7 in a staggered mode, and therefore the air inlet holes 70 can be uniformly covered on the outer surface of the hollow rod 7. The right turntable 31 is provided with a connecting hole, the connecting hole is connected with one end of the hollow rod 7 through a bearing, and the port of the other end of the hollow rod 7 is communicated with the negative pressure dust collecting device 8. Through negative pressure dust collecting device 8, continuous follow hollow rod 7 in bleed (produce the negative pressure promptly) for the dust in the impeller 3 is continuous enters into hollow rod 7 through the air intake inside, reentries negative pressure dust collecting device 8, thereby realizes clearing up and collects the effect of the inside dust of impeller 3.

Preferably, the bottoms of the left frame 1 and the right frame 2 are both provided with rubber pads 6, and the rubber pads 6 are used for realizing damping and buffering, so that the noise generated during the operation of the cooling fan is reduced.

In this embodiment, the negative pressure dust collecting device 8 preferably includes a negative pressure fan 80 and a dust collecting box 81, an air inlet of the dust collecting box 81 is communicated with the hollow rod 7, an air outlet of the dust collecting box 81 is connected with an air inlet end of the negative pressure fan 80, a dust isolating net 810 for isolating the air inlet and the air outlet is arranged in the dust collecting box 81, the negative pressure fan 80 continuously performs air extraction, so that dust is mixed in air flow and enters the dust collecting box 81 from the hollow rod 7, the air flow is extracted through the dust isolating net 810, and the dust stays in the dust collecting box 81 due to blocking of the dust isolating net 810, thereby realizing dust collection. In other forms, the negative pressure dust collector 8 may be a bag collector.

Preferably, the negative pressure fan 80 is a centrifugal fan, an air inlet end connected with the dust collecting box 81 is axially arranged on the centrifugal fan, and an air outlet end is arranged in the radial tangential direction, so that the lateral air exhaust of the device is realized, and the interference generated when a plurality of heat dissipation fans are axially arranged and installed due to the axial air exhaust is avoided.

Preferably, the bottom of the dust collecting box 81 is provided with a socket, the inner box 811 comprises a base and a box portion arranged on the base, the base is connected with the bottom of the dust collecting box 81 through a bolt, so that the inner box 811 can be detached from the dust collecting box 81, the box portion is connected with the socket in a plug-in manner, the box portion is provided with a dust collecting groove, when a certain amount of dust is accumulated in the dust collecting groove, the inner box 811 can be periodically detached, and then the dust is cleaned. The dust-proof net 810 is inserted on the box body part, so that the dust-proof net 810 can be detached and cleaned independently.

Preferably, a protective cover 82 covering the negative pressure dust collecting device 8 is fixedly connected to the left frame 1, an opening is formed in one side of the protective cover 82 corresponding to the air outlet end of the centrifugal fan, and a rail is arranged at the opening to protect the negative pressure dust collecting device 8.

The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without creative labor from the above conception, and all the changes fall within the protection scope of the present invention.

Claims (8)

1. The utility model provides a cooling fan for dry-type transformer, includes left frame and right frame, rotate in the frame of a left side and install the pivot, the pivot orientation the coaxial rigid coupling of one end of right frame has left side carousel, install the motor in the frame of the right side, the drive shaft of motor with the coaxial setting of pivot, the rigid coupling has right side carousel in the drive shaft of motor, left side carousel with the rigid coupling has a plurality of along the blade of pivot circumference range between the right side carousel, left side frame with the rigid coupling has the interval to set up between the frame of the right side blade outlying arc guide plate, a serial communication port, hollow rod has been cup jointed to the pivot internal rotation, be equipped with a plurality of fresh air inlet on hollow rod's the pole wall, hollow rod's one end rotate connect in on the right side carousel, hollow rod's the other end is connected in negative pressure dust.

2. The heat dissipation fan for a dry-type transformer as recited in claim 1, wherein the air inlet holes are spaced along an axial direction of the hollow rod and are arranged in a staggered manner along a radial direction of the hollow rod.

3. The cooling fan for a dry type transformer as claimed in claim 1, wherein a protection screen is connected to the left frame and the right frame, and the protection screen covers the motor.

4. The cooling fan for a dry-type transformer as claimed in claim 1, wherein the left frame and the right frame are provided with rubber pads at the bottom thereof.

5. The heat dissipation fan for the dry-type transformer as recited in any one of claims 1 to 4, wherein the negative pressure dust collection device comprises a negative pressure fan and a dust collection box, an air inlet of the dust collection box is communicated with the hollow rod, an air outlet of the dust collection box is connected with an air inlet end of the negative pressure fan, and a dust separation net for separating the air inlet and the air outlet is arranged in the dust collection box.

6. The heat dissipation fan for the dry-type transformer as recited in claim 5, wherein an inner case is inserted into a bottom of the dust collection case, and the dust separation net is detachably attached to the inner case.

7. The cooling fan for a dry-type transformer as set forth in claim 5, wherein the negative pressure fan is a centrifugal fan.

8. The heat dissipation fan for a dry-type transformer as claimed in claim 5, wherein a shield covering the negative pressure dust collection device is fixed to the left frame, and an opening is formed at one side of the shield.

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