CN220144213U - Dust collector and power transformer equipped with the same - Google Patents

Abstract

The utility model relates to a dust removing device and a power transformer provided with the dust removing device, wherein the dust removing device is arranged on the power transformer and comprises a wind box, a fan, a dust collecting box, a baffle plate and an opening and closing control structure. The front side of the wind box is provided with an electric fan which can rotate forwards and reversely, and the rear side of the wind box is provided with a dust removing opening; the dust collecting box is detachably fixed on the rear side of the air box, and the front side dust inlet of the dust collecting box is aligned with the dust outlet to form a dust inlet channel; the baffle is arranged on the dust inlet and can rotate along the horizontal central shaft of the baffle, and the dust inlet is shielded or opened; the opening and closing control structure can apply force to the baffle plate to enable the baffle plate to rotate. At least two dust collector that the structure is the same set up in power transformer's upside, be located the different sides during operation of sleeve joint, the wind box of one side blows the dust, and the wind box of opposite side is accomodate in with dust suction dust collection box, and the two switches after a period and bloies, the state of induced drafting, and the dust removal is effectual to the staff can unpick and wash dust collection box, and is very convenient.

Description

Dust collector and power transformer equipped with the same

Technical Field

The present utility model relates to a power transformer, and more particularly, to a dust removing device for a power transformer and a structure of a power transformer having a dust removing structure.

Background

A power transformer is an electrical device for regulating alternating voltage (or current), having a case with a built-in winding coil, and a bushing terminal for connecting a power line is provided on the upper side of the case.

After the power transformer is used for a long time, dust is easy to accumulate near the bushing joint, and static electricity generated by the dust can cause the bushing joint to discharge, so that danger is generated, and therefore, a dust removing device is required to be arranged on the power transformer. Because dust is easily stuck around the bushing tip, dust collectors for power transformers need to have the ability to purge in multiple directions from around the bushing tip.

The existing power transformer dust removal device is described by the utility model of patent number CN202222627202. X and named as a novel transformer, and mainly relates to a dust removal frame structure (see fig. 7), which comprises four bent suction pipes 501, wherein the upper ends of the suction pipes 501 are connected with a suction box 6, the lower ends of the suction pipes 501 are respectively connected to four corners of a hollow dust removal frame 502, the dust removal frame 502 is arranged around a sleeve joint, a plurality of dust removal pipes 503 are extended above the dust removal frame 502, through holes facing the sleeve joint are formed in the side surfaces of the dust removal pipes 503, and when the suction box 6 works, dust is adsorbed by the dust removal pipes 503 from the periphery of the sleeve joint, so that the dust removal effect is achieved.

However, the suction force of the suction box of the dust removing device is divided by the complicated branch line, the suction force is small, the dust collection effect is poor, and dust adsorbed in the dust removing device is blocked in the dust removing pipe 503, so that the dust is difficult to clean.

Disclosure of Invention

The utility model aims to solve the problems that the dust removal effect of a dust removal device is poor and adsorbed dust is difficult to clean.

For the above purpose, the present utility model provides a dust removing device mounted on a power transformer T, the upper side of which is provided with a bushing terminal T1 for connecting a power line.

The dust removing device comprises a wind box 1, a fan 13, a dust collecting box 2, a baffle 5 and an opening and closing control structure 4.

The fan case 1 is a cubical case, the front side of which is close to the sleeve joint T1, the rear side is far from the sleeve joint T1, a circular opening 102 corresponding to the shape of the fan 13 is formed on the front side, a rectangular dust outlet 103 is formed on the rear side of the fan case 1, and an air inlet 101 is formed on the upper side.

The fan 13 is disposed in the circular opening 102 to be rotatable in the forward direction and the reverse direction.

The dust collection box 2 is a cuboid box body and is detachably fixed on the rear side of the wind box 1, the front side surface of the dust collection box is attached to the rear side surface of the wind box 1, the front side surface of the dust collection box is provided with a dust inlet 201 which is the same as the dust outlet 103 in shape, and the dust outlet 103 is aligned with the dust inlet 201 to form a dust inlet channel.

The baffle 5 is rectangular, the left and right ends of the baffle 5 are provided with protruding rotating shafts, the rotating shafts are embedded into the left and right sides of the dust outlet 103 or the dust inlet 201, and the baffle 5 can rotate along the central axis L1 in the left and right directions.

When the baffle 5 is in an upright state, the dust outlet 103 or the dust inlet 201 is shielded, and when the baffle 5 is in an inclined state, the dust outlet 103 or the dust inlet 201 is opened, and the baffle 5 which can rotate under stress can be reset.

The first end of the opening and closing control structure 4 forms an electric telescopic end 42, the electric telescopic end 42 is fixedly connected with the wind box 1, the electric telescopic end 42 can stretch out and draw back, the second end of the opening and closing control structure 4 is driven to move, the second end can be in contact with the baffle 5 in the moving process, and the baffle 5 is forced to rotate.

At least two dust removal devices with the same structure are arranged on the upper side of the power transformer T through bolts and are positioned on different sides of the sleeve joint T1.

In operation, the air box 1a and the air box 1b are in different states, that is, the air box 1a at the front side is in a blowing state, dust is blown up, the air box 1b at the rear side is in an air suction state, and the dust is sucked into the dust collection box 2b and stored. The working states of the wind box 1a and the wind box 1b are controlled by a PLC system and switched according to the interval time, so that forward and backward air flows can be periodically switched, the wind power is strong and sufficient, and dust is prevented from being blocked around the sleeve joint. And the staff can unpick and wash dust collection box 2a when wind box 1a is in the state of blowing, and the dust that the clearance dust collector adsorbed is very convenient, also can not influence wind box 1 a's work.

Preferably, the baffle 5 has a plurality of baffles, and the central axes L1 of the baffles are located in the same vertical plane.

The baffle 5 sets up to a plurality of benefits, when baffle 5 is in the tilt state, can not too much occupy the space in the dust collection box 2, prevent that it from taking dust collection box 2 out at rotatory in-process to each baffle 5 of design like this, small, the quality is little, makes its rotation also less in that needs to provide, more easily control.

Preferably, the opening and closing control structure 4 is a long rod vertically arranged inside the wind box 1, and a plurality of cross bars 43 extending towards the baffle plates 5 are formed at the rear side, and the number of the cross bars 43 is the same as that of the baffle plates 5.

The electric telescopic end 42 is located at the lower end of the opening and closing control structure 4, and can be telescopic up and down, so as to drive the cross rod 43 to move up and down.

When the cross bars 43 reach the highest height, the baffle plates 5 are in a vertical state, the dust outlet 103 or the dust inlet 201 is shielded, each cross bar 43 is flush with the upper end of each baffle plate 5, the rear end of each cross bar 43 is in contact with the upper end of each baffle plate 5, and the torsion spring is in a relaxed state.

When the cross bar 43 moves downward, the shutter 5 is pressed down by the cross bar 43 and rotates about the central axis L1. When the cross bar 43 reaches the lowest height, the baffle 5 is in a horizontal or inclined state, the dust outlet 103 or the dust inlet 201 is opened, and the torsion spring is in a compressed state.

Therefore, the opening and closing control structure 4 has a simple structure and is easy to install, and the straight cross bar does not cause difficulty in disassembling the dust collection box 2.

Preferably, the upper end of the opening and closing control structure 4 forms a wind shielding block 40 matched with the shape of the air inlet 101. When the cross bar 43 reaches the lowest height, the wind shielding block 40 shields the air inlet 101, and when the cross bar 43 reaches the highest height, the wind shielding block 40 is positioned on the upper side of the air inlet 101 and is spaced from the air inlet 101 to open the air inlet 101.

Therefore, when the fan 13 is in the blowing state, clean air forms an air flow to enter the wind box 1 from the space between the wind shielding block 40 and the air inlet 101, and then the air is discharged from the circular opening 102 to sweep dust. Because the baffle 5 closes the dust inlet 201, dust in the dust collection box 2 cannot return to the wind box 1 along with the airflow, and dust is not carried in the air blowing process.

When the fan 13 is in the air suction state, the air flow in the dust removing device can flow along the horizontal direction due to the closing of the air inlet 101, and dust can enter the dust collecting box 2 along with wind.

Preferably, the air inlet 101 is a plurality of small air inlets 101a … n, the upper end of the opening and closing control structure 4 forms a cross beam 44, a branch is formed on the upper side of the cross beam, and a plurality of small wind shielding blocks 40a … n are located at the upper ends of the branches and respectively correspond to the small air inlets 101a … n.

Therefore, when the fan 13 is in the blowing state, the gap between the wind shielding block 40 and the air inlet 101 is smaller, so that the air inlet is uniform, dust can be prevented from entering the wind box 1 along with wind, and then the dust is sent to the upper side of the power transformer T along with wind, and the dust removal effect is affected.

Preferably, the lower side of the rear end of the cross bar 43 is rounded, and the upper end of the baffle 5 is inclined surface tangential to the lower side of the rear end of the cross bar 43.

This ensures that the interaction of the baffle and the cross bar 43 is smooth and prevents them from wearing away from each other.

Preferably, the number of the dust removing devices is even, and the dust removing devices are symmetrically arranged at opposite ends of the upper side of the power transformer T, so that the fans of the dust removing devices can be matched with each other, and the dust removing effect is better.

Preferably, the circular opening 102 on the front side of the wind box 1 is located opposite the casing joint T1, so that dust in the vicinity of the casing joint T1 is more easily cleaned.

Preferably, the power transformer T has an even number of sleeve joints T1, two rows of the power transformer T are symmetrically arranged, two dust collectors are respectively disposed at two ends of the two rows of sleeve joints T1, in each dust collector, two circular openings 102 and two fans 13 disposed therein are respectively disposed, and each circular opening 102 is disposed on an extension line of a connecting line of each row of sleeve joints T1. The structure of the power transformer can be adapted more due to the existing design.

The utility model also provides a power transformer with the dust removing device, wherein the upper side of the power transformer T is provided with a sleeve joint T1 for connecting a power transmission line.

During operation, the wind box 1a and the wind box 1b are in different states, the wind box 1a at the front side is in a blowing state, dust is blown up, the wind box 1b at the rear side is in an air suction state, the dust is sucked into the dust collection box 2b and is collected, and the wind box 1a and the wind box 1b are matched with each other, so that the dust collection effect is good. The working states of the wind box 1a and the wind box 1b are controlled by a PLC system and switched according to interval time, so that forward and backward air flows can be periodically switched.

Therefore, the wind power provided by the dust removing device is strong and sufficient, and dust is prevented from being blocked around the sleeve joint. And the staff can unpick and wash dust collection box 2a when wind box 1a is in the state of blowing, and the dust that the clearance dust collector adsorbed is very convenient, also can not influence wind box 1 a's work.

Drawings

Fig. 1 is an explanatory diagram of the connection relationship between a dust removing device and a power transformer;

FIG. 2 is a structural explanatory view of the wind box and dust collection box;

FIG. 3 is a cross-sectional view of the wind box of FIG. 1 taken along line A-A;

fig. 4 is an explanatory diagram of an opening and closing control structure;

fig. 5 is an explanatory diagram of a state in which the blower box blows air;

fig. 6 is a state explanatory diagram of the suction of the wind box;

fig. 7 is a structural explanatory diagram of a conventional power transformer dust removing device.

Detailed Description

The following describes the embodiments of the present utility model in detail with reference to the accompanying drawings, taking a power transformer equipped with two dust removing devices as an example. The following description is a specific embodiment of the present utility model.

Fig. 1 is a diagram illustrating a connection relationship between a dust removing device and a power transformer, fig. 2 is a diagram illustrating a structure of a wind box and a dust collecting box, and for convenience of understanding, the dust removing device will be briefly described with reference to fig. 1 and 2.

As shown in fig. 2, the dust removing device comprises a wind box 1 and a dust collecting box 2, a fan 13 is arranged on the wind box 1, and the dust collecting box 2 is detachably arranged on the rear side of the wind box 1.

As shown in fig. 1, two dust collectors with the same structure are fixed at the front and rear ends of the upper side of the power transformer T by bolts, and are positioned at the front and rear sides of the sleeve joint T1, and the directions are opposite.

The fan 13 in the wind box 1 can be rotated in the forward and reverse directions, i.e., it can be changed to a blowing state or a suction state according to control.

In fig. 1, the air box 1a and the air box 1b are different in operation, the air box 1a located on the front side is in a blowing state, dust is blown up, the air box 1b located on the rear side is in an air suction state, and dust is sucked into the dust collection box 2b and stored. The working states of the wind box 1a and the wind box 1b are controlled by a PLC system and switched according to the interval time, so that forward and backward air flows can be periodically switched, the wind power is strong and sufficient, and dust is prevented from being blocked around the sleeve joint. The staff can unpick and wash dust collection box 2a when wind box 1a is in the state of blowing, and the dust that the clearance dust collector adsorbed is very convenient, also can not influence wind box 1 a's work.

Fig. 3 is a sectional view of the air box of fig. 1 taken along A-A, fig. 5 shows a state in which the air box 1 blows, fig. 6 shows a state in which the air box 1 sucks air, and the external structure of the dust removing apparatus will be specifically described with reference to fig. 1 to 3, 5 and 6, and for convenience of description, the air box 1 and the dust collecting box 2 will be referred to as the air box 1a and the dust collecting box 2a of fig. 1.

As shown in fig. 2, the dust removing device has a fan box 1, a fan 13, a dust collection box 2, and a baffle 5, when viewed from the outside.

As shown in fig. 2, the wind box 1 and the dust collection box 2 are both cubical boxes.

As can be seen from fig. 1, the upper side of the power transformer T is provided with bushing connectors T1 for connecting the power transmission lines, the bushing connectors T1 are arranged in left and right rows, the front side of the wind box 1 is close to the bushing connectors T1, and the rear side is far from the bushing connectors T1.

Referring to fig. 2 and 3, the front side of the fan case 1 is provided with a circular opening 102 corresponding to the shape of the fan 13, and the circular opening 102 is positioned to face the socket joint T1. The fan 13 is disposed within the circular opening 102. The circular openings 102 and the fans 13 arranged therein are respectively arranged on the extension line of the connecting line of the sleeve joints T1 of each row, so that the best dust removing effect can be ensured.

The upper side of the wind box 1 forms wind inlets 101, in particular, 7 small wind inlets 101 (a … n, n=7) dispersed for wind inlet when the wind box 1 blows out.

As shown in fig. 3, a rectangular dust outlet 103 is formed on the rear side of the wind box 1.

Referring to fig. 2, a dust inlet 201 having the same shape as the dust outlet 103 (see fig. 3) is formed at the front side of the dust collecting box 2, and when the dust collecting box 2 is mounted at the rear side of the wind box 1 (not shown in the mounting piece drawing), the front side of the dust collecting box 2 is attached to the rear side of the wind box 1, and the dust outlet 103 is aligned with the dust inlet 201 to form a dust inlet passage.

The rear side of the dust bin 2 is also provided with a vent (not shown in the figures) covered with a filter screen.

As shown in fig. 2, three baffles 5 are provided in the dust outlet 103 for shielding the dust outlet 103 when the wind box 1 is in a blowing state. The baffle 5 is rectangular, and the left and right ends of the baffle 5 are provided with protruding rotating shafts and embedded into the left and right sides of the dust outlet 103, so that the baffle 5 can rotate along the central axis L1 in the left and right directions. The central axes L1 of the baffles are positioned in the same vertical plane. The baffle 5 is provided with a torsion spring (not shown in the figure) which can reset the baffle 5 which can rotate under force.

When the baffle 5 is in the inclined state as shown in the middle part of fig. 6, the dust outlet 103 is opened, and when the baffle 5 is in the upright state as shown in the middle part of fig. 5, the gap between the end parts of the respective baffles 5 is small, and the dust outlet 103 is shielded by the baffles 5.

The rotation angle of the baffle plate 5 is controlled by the opening and closing control structure 4 in the wind box 1. The baffle 5 is set to a plurality of (three) benefits, when baffle 5 is in the tilt state, can not too much occupy the space in the dust collection box 2, prevent that it will take dust collection box 2 out at rotatory in-process to each baffle 5 of design like this, small in size, the quality is little, makes its rotation also less in what need provide, more easy control.

Fig. 4 is an explanatory view of the opening/closing control structure, and the opening/closing control structure 4 will be explained below with reference to fig. 3, 4, 5, and 6.

As shown in fig. 3 and 4, the opening and closing control structure 4 is a long rod vertically arranged inside the wind box 1, three cross rods 43 extending towards the baffle plate 5 are formed at the rear side, and an electric telescopic end 42 is formed at the lower end and fixedly connected with the inner bottom surface of the wind box 1. The electric telescopic end 42 can be telescopic up and down, and drives the cross rod 43 to move up and down.

The upper end of the opening and closing control structure 4 forms a cross beam 44, 7 branches are formed on the upper side of the cross beam, 7 small wind shielding blocks 40 (a … n, n=7) are positioned at the upper ends of the branches, and the shapes and the positions of the small wind shielding blocks are respectively in one-to-one correspondence with the small wind inlets 101 (a … n, n=7). Referring to fig. 5 and 6, when the cross bar 43 reaches the lowest height, the wind shielding block 40 shields the wind inlet 101; when the cross bar 43 reaches the highest height, the wind shielding block 40 is located on the upper side of the air inlet 101 and is spaced from the air inlet 101, so that the air inlet 101 is opened.

The opening and closing control structure 4 has simple structure and easy installation, and the straight cross rod can not cause difficulty in disassembling the dust collection box 2.

The following describes the operation of the dust removing device with reference to fig. 5 and 6.

As shown in fig. 5, when the fan 13 rotates reversely and sucks air to the rear side, the electric telescopic end 42 is in a compressed state, the wind shielding block 40 is positioned at the lowest position to shield the air inlet 101, the cross bar 43 is also positioned at the lowest position, downward pressure is applied to the baffle 5, the baffle 5 rotates anticlockwise to an inclined state shown in fig. 5, the dust inlet 201 (see fig. 2) is opened, and the torsion spring is in a compressed state. Because the air inlet 101 is closed, the air flow in the dust removing device can flow along the horizontal direction, and dust can enter the dust collecting box 2 along with wind according to white arrows b, b', b″ in fig. 5.

As shown in fig. 6, when the fan 13 rotates forward and blows air to the front side, the motor-driven telescopic end 42 is in a stretched state, the wind shielding block 40 is positioned at the highest position, the air inlet 101 is opened, the cross bar 43 is also positioned at the highest position, no pressure is applied to the baffle 5, the torsion spring rebounds, and the baffle 5 rotates clockwise to a vertical state shown in fig. 6, so that the dust inlet 201 (see fig. 2) is shielded. Clean air enters the wind box 1 from between the wind shielding block 40 and the wind inlet 101, flows along white arrows a, a', a″ in fig. 6, and is discharged from the circular opening 102 to sweep dust. Because the baffle 5 closes the dust inlet 201, dust in the dust collection box 2 cannot return to the wind box 1 along with the airflow, and dust is not carried in the air blowing process.

As shown in fig. 3 to 6, the lower side of the rear end of the cross bar 43 is formed with a rounded corner, and the upper end of the baffle 5 is formed with a slope tangent to the lower side of the rear end of the cross bar 43, so that the interaction between the baffle and the cross bar 43 can be smoothly performed, and the two are prevented from being worn mutually.

It should be noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

For example, the baffle 5 is mounted on the dust inlet 201, or more dust removing devices are provided as needed.

In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Claims (10)

1. The dust removing device is arranged on a power transformer (T), a sleeve joint (T1) for connecting a power transmission line is arranged on the upper side of the power transformer (T), and the dust removing device is characterized in that,

the dust removing device comprises a wind box (1), a fan (13), a dust collecting box (2), a baffle (5) and an opening and closing control structure (4),

the wind box (1) is a cuboid box body, the front side of the wind box is close to the sleeve joint (T1), the rear side of the wind box is far away from the sleeve joint (T1), a round opening (102) corresponding to the fan (13) is formed on the front side, a rectangular dust outlet (103) is formed on the rear side of the wind box (1), an air inlet (101) is formed on the upper side of the wind box,

the fan (13) is arranged in the circular opening (102) and can rotate forwards and reversely,

the dust collection box (2) is a cuboid box body, is detachably fixed at the rear side of the wind box (1), the front side surface of the dust collection box is attached to the rear side surface of the wind box (1), the front side surface of the dust collection box is provided with a dust inlet (201) with the same shape as the dust outlet (103), the dust outlet (103) is aligned with the dust inlet (201) to form a dust inlet channel,

the baffle (5) is rectangular, the left and right ends of the baffle are provided with protruding rotating shafts, the rotating shafts are embedded into the left and right sides of the dust outlet (103) or the dust inlet (201), the baffle (5) can rotate along the central axis (L1) in the left and right direction,

when the baffle plate (5) is in an upright state, the dust outlet (103) or the dust inlet (201) is shielded, when the baffle plate (5) is in an inclined state, the dust outlet (103) or the dust inlet (201) is opened, the baffle plate (5) which can rotate under stress is reset,

the first end of the opening and closing control structure (4) forms an electric telescopic end (42) which is fixedly connected with the wind box (1), the electric telescopic end (42) can stretch and retract to drive the second end of the opening and closing control structure (4) to move, so that the second end can be contacted with the baffle plate (5) in the moving process to apply force to the baffle plate (5) to rotate,

at least two dust removal devices with the same structure are arranged on the upper side of the power transformer (T) and are positioned on different sides of the sleeve joint (T1).

2. A dust collector as claimed in claim 1, characterized in that there are a plurality of baffles (5), the central axes (L1) of each of which lie in the same vertical plane.

3. The dust collector as claimed in claim 2, wherein the opening and closing control structure (4) is a long rod vertically arranged inside the wind box (1), a plurality of cross bars (43) extending towards the baffle plates (5) are formed at the rear side, the number of the cross bars (43) is the same as that of the baffle plates (5), torsion springs are arranged at the end parts of the baffle plates (5),

the electric telescopic end (42) is positioned at the lower end of the opening and closing control structure (4) and can be telescopic up and down to drive the cross rod (43) to move up and down,

when the cross bars (43) reach the highest height, the baffle plates (5) are in a vertical state, the dust outlet (103) or the dust inlet (201) is shielded, each cross bar (43) is respectively flush with the upper end of each baffle plate (5), the rear end of each cross bar (43) is contacted with the upper end of each baffle plate (5), the torsion spring is in a relaxed state,

when the cross bar (43) moves downwards, the baffle (5) is pressed down by the cross bar (43) and rotates by the central axis (L1),

when the cross rod (43) reaches the lowest height, the baffle (5) is in a horizontal or inclined state, the dust outlet (103) or the dust inlet (201) is opened, and the torsion spring is in a compressed state.

4. A dust collector as claimed in claim 3, wherein the upper end of the open-close control structure (4) forms a wind shielding block (40) matched with the air inlet (101),

when the cross bar (43) reaches the lowest height, the wind shielding block (40) shields the air inlet (101),

when the cross rod (43) reaches the highest height, the wind shielding block (40) is positioned on the upper side of the air inlet (101), is separated from the air inlet (101), and opens the air inlet (101).

5. The dust collector as claimed in any one of claims 1 to 4, characterized in that the air inlet (101) is a plurality of small air inlets distributed,

the upper end of the opening and closing control structure (4) is provided with a cross beam (44), a branch is formed on the upper side of the cross beam, and a plurality of small wind shielding blocks are positioned at the upper ends of the branches and respectively correspond to the small air inlets.

6. A dust collector according to claim 3 or 4, wherein the lower side of the rear end of the cross bar (43) is rounded, and the upper end of the baffle (5) is inclined surface tangential to the lower side of the rear end of the cross bar (43).

7. The dust removing device according to any one of claims 1 to 4, wherein the number of dust removing devices is an even number, symmetrically arranged at opposite ends of the upper side of the power transformer (T).

8. A dust collector according to any one of claims 1-4, characterized in that the circular opening (102) in the front side of the wind box (1) is located directly opposite the casing joint (T1).

9. The dust removing device according to claim 8, wherein the sleeve joints (T1) are arranged in two symmetrical rows, two dust removing devices are respectively arranged at two ends of the sleeve joints (T1) in two rows,

in each dust removing device, the number of the circular openings (102) and the number of the fans (13) arranged in the circular openings are two, and each circular opening (102) is positioned on an extension line of a connecting line of each row of sleeve joints (T1).

10. A power transformer provided with a dust-removing device, wherein a bushing joint (T1) for connecting a transmission line is arranged on the upper side of the power transformer (T), and the dust-removing device according to any one of claims 1 to 4 is arranged on the upper side of the power transformer (T).