阅读说明：本技术 机车牵引变流器的主动除尘离心风机 (Active dust removal centrifugal fan of locomotive traction converter ) 是由 肖轲远 王雷 杨璐 侯丹阳 于 2021-08-12 设计创作，主要内容包括：本发明涉及机车牵引变流器的除尘、散热技术领域,具体为机车牵引变流器的主动除尘离心风机。本发明为了解决现有机车牵引变流器的散热、除尘效果差的问题,故提供了一种新的机车牵引变流器的除尘离心风机,包括桶体状外罩、位于外罩内且同轴固定于外罩底面中部的外转子电机、固定安装于外转子的离心叶片,外罩上设有竖直布置的除尘孔,除尘孔的上端与外罩内腔相通,除尘孔的下端与机车牵引变流器的外部相通,外罩底面设有通风孔,外罩开口端覆盖且固定连接有其上设有过滤网孔的过滤板,本发明巧妙利用离心力并结合除尘孔简单结构,高效滤除冷却风中的灰尘、颗粒杂质等异物,有效提高变流器内部的洁净度,保障了各电气元件的安全、可靠工作。(The invention relates to the technical field of dust removal and heat dissipation of a locomotive traction converter, in particular to an active dust removal centrifugal fan of the locomotive traction converter. The invention provides a novel dust removal centrifugal fan of a locomotive traction converter, aiming at solving the problem of poor heat dissipation and dust removal effects of the existing locomotive traction converter, and comprising a barrel-shaped outer cover, an outer rotor motor and a centrifugal blade, wherein the outer rotor motor is positioned in the outer cover and coaxially fixed in the middle of the bottom surface of the outer cover, the centrifugal blade is fixedly arranged on the outer rotor, the outer cover is provided with dust removal holes which are vertically arranged, the upper ends of the dust removal holes are communicated with an inner cavity of the outer cover, the lower ends of the dust removal holes are communicated with the outside of the locomotive traction converter, the bottom surface of the outer cover is provided with vent holes, and the opening end of the outer cover is covered and fixedly connected with a filter plate with filter mesh holes.)

1. The utility model provides an initiative dust removal centrifugal fan of locomotive traction converter, a serial communication port, including barrel form dustcoat (1), be located dustcoat (1) and coaxial external rotor electric machine (2) that are fixed in dustcoat (1) bottom surface middle part, fixed mounting is in centrifugal blade (3) of external rotor, be equipped with dust removal hole (4) of vertical arrangement on dustcoat (1), the upper end and the dustcoat (1) inner chamber of dust removal hole (4) communicate with each other, dust removal hole (4) lower extreme is equipped with and communicates with each other and swing joint in the dust collection box of dustcoat (1) with dust removal hole (4), dustcoat (1) bottom surface is equipped with ventilation hole (5), dustcoat (1) open end covers and fixedly connected with is equipped with filter (6) of filter screen hole on it.

2. The active dedusting centrifugal fan of a locomotive traction converter according to claim 1, characterized in that the inner cavity of the housing (1) is cylindrical.

3. The active dedusting centrifugal fan of the locomotive traction converter according to claim 2, characterized in that the number of the centrifugal blades (3) is four and is evenly distributed on the circumferential surface of the outer rotor in the circumferential direction.

4. Active dedusting centrifugal fan of a locomotive traction converter according to claim 3, characterized in that the dedusting aperture (4) is located on the part of the casing (1) corresponding to the part of the centrifugal blade (3) that transitions from the horizontal position to the vertical downward position.

5. Active dedusting centrifugal fan of a locomotive traction converter according to claim 4, characterized in that the dedusting aperture (4) is located on the part of the casing (1) corresponding to the beginning of the transition of the centrifugal blade (3) from the horizontal position to the vertical downward position.

6. Active dedusting centrifugal fan of a locomotive traction converter according to claim 5, characterized in that the outer shape of the housing (1) is a cube and the circumference of the cube is arranged horizontally or vertically.

7. The active dedusting centrifugal fan of the locomotive traction converter according to claim 6, wherein the vent holes (5) are four fan-shaped vent holes (5) concentric with the inner cavity of the housing (1) and are circumferentially and uniformly distributed in an annular area enclosed by the middle of the bottom surface of the housing (1) and the inner wall of the housing (1).

8. The active dedusting centrifugal fan of the locomotive traction converter according to claim 7, wherein an annular flange plane (8) is fixedly sleeved at the bottom of the outer rotor motor (2), four first connecting holes are uniformly distributed on the flange plane (8), four second connecting holes matched with the first connecting holes are uniformly distributed in the middle of the bottom surface of the outer cover (1), and four bolts respectively penetrate through the first connecting holes and the second connecting holes to realize the fixed connection between the outer rotor motor (2) and the outer cover (1).

9. The active dust removal centrifugal fan of a locomotive traction converter according to any one of claims 1 to 8, characterized in that the filter plate (6) is square and has an area larger than that of the housing (1), and four cylindrical fasteners (7) adapted to four fastening holes of a cabinet door of the locomotive traction converter are fixedly connected to four corners of the filter plate (6), respectively.

Technical Field

The invention relates to the technical field of dust removal and heat dissipation of a locomotive traction converter, in particular to an active dust removal centrifugal fan of the locomotive traction converter.

Background

In the new eight-axis electric locomotive traction converter, a fan is installed at the top end of the traction converter, and an air inlet in a cabinet door of the traction converter is combined (the air inlet is positioned on the cabinet door of the locomotive traction converter, a blind window is arranged at the air inlet, cylindrical buckles are fixedly installed on four corners of the blind window respectively, and clamping holes matched with the cylindrical buckles are arranged on the cabinet door so as to fix the blind window), so that the heat dissipation of small-power electric elements in the traction converter is realized (other electric elements in the traction converter are provided with special heat dissipation devices, such as cooling pipelines and the like for heat dissipation). In order to prevent impurities such as particles and dust in the environment from being sucked into the locomotive traction converter by an air inlet on a cabinet door of the locomotive traction converter in the air suction process, filter cotton (fixedly arranged on the outer side of a shutter) is additionally arranged at the air inlet of the cabinet door of the locomotive traction converter so as to achieve the effect of purifying cooling air. However, the use of filter cotton causes the following disadvantages: 1) the higher the density of the filter cotton is, the higher the wind resistance is, and further the air intake is reduced; 2) along with the long-time operation of the locomotive traction converter, filter cotton also has the risk of blockage, so that the air intake is reduced, and the heat dissipation of part of electrical elements of the locomotive traction converter is influenced; 3) the dust removal effect of the filter cotton is not ideal, and part of small particle dust can be sucked into the converter; 4) special people need to clean the filter cotton regularly to ensure the heat dissipation effect of the converter.

Disclosure of Invention

The invention provides a novel active dust removal centrifugal fan of a locomotive traction converter, aiming at solving the problem of poor heat dissipation and dust removal effects of the existing locomotive traction converter and improving the heat dissipation and dust removal effects of the locomotive traction converter.

The invention is realized by adopting the following technical scheme: an active dedusting centrifugal fan of a locomotive traction converter comprises a barrel-shaped outer cover, an outer rotor motor and a centrifugal blade, wherein the outer rotor motor is positioned in the outer cover and coaxially fixed in the middle of the bottom surface of the outer cover, the centrifugal blade is fixedly arranged on an outer rotor, the outer cover is provided with vertically arranged dedusting holes (the outer cover has a certain thickness as seen from the dedusting holes, otherwise, no dedusting hole exists), the upper ends of the dedusting holes are communicated with an inner cavity of the outer cover, the lower ends of the dedusting holes are provided with dust collecting boxes which are communicated with the dedusting holes and movably connected (detachably connected) with the outer cover, the bottom surface of the outer cover is provided with ventilation holes, the opening end of the outer cover is covered and fixedly connected with a filter plate on which filter meshes are arranged, when the centrifugal blade rotates, wind enters from the opening end of the outer cover, foreign matters passing through the centrifugal blades are thrown out of the outer cover through the dust removal holes under the action of centrifugal force, and the air after dust removal is discharged through the vent holes.

The working principle is as follows: when the centrifugal fan is used, the centrifugal fan is arranged in the converter and fixed on a converter cabinet door, when an outer rotor motor is started, an outer rotor rotates, a centrifugal blade rotates, air is sucked from an air inlet of the converter cabinet door and then is sucked into an inner cavity of the outer cover after being primarily filtered by a filter plate, when foreign matters in the air are contacted with the centrifugal blade, the foreign matters are adsorbed on the centrifugal blade due to the fact that the centrifugal blade is in a high-speed rotating state in the working process, and when the centrifugal blade passes through a dust removing hole, the foreign matters on the centrifugal blade are thrown out of the outer cover through the dust removing hole under the action of centrifugal force, so that the effect of cooling air dust removal of the converter is achieved, and the air after dust removal is discharged to the outer cover in the converter through the air vent hole to dissipate heat of low-power electric elements in the converter; meanwhile, the dust collecting box collects the foreign matters thrown out from the dust removing holes in a centralized manner so as to avoid polluting other parts in the converter, and after the dust collecting box is used for a period of time, the foreign matters in the dust collecting box need to be treated in a centralized manner at regular intervals.

The beneficial effects produced by the invention are as follows:

1) under the condition that the external environment of the converter is not changed, the air inlet quantity of the converter is increased, and the internal heat dissipation efficiency of the converter is effectively improved;

2) foreign matters such as dust, particle impurities and the like in cooling air are efficiently filtered by skillfully utilizing centrifugal force and combining with a simple structure of the dust removing holes, so that the cleanliness of the interior of the converter is effectively improved, and the safe and reliable work of each electric element is guaranteed;

3) the invention has simple structure, unique and ingenious conception, is not easy to think by the technicians in the field and has innovation.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic perspective view of a centrifugal fan of the present invention with a filter plate removed;

FIG. 3 is a front view of the centrifugal fan of the present invention with the filter plate removed;

fig. 4 is a schematic view of the operation of the centrifugal fan of the present invention.

In the figure: the novel dust removing device comprises a shell, an outer rotor motor, a centrifugal blade, a dust removing hole, a ventilation hole, a filtering plate, a buckle and a flange plane, wherein the shell is 1-an outer cover, the outer rotor motor is 2-the centrifugal blade is 3-the dust removing hole is 4-the ventilation hole is 5-the ventilation hole is 6-the filtering plate, and the buckle is 7-the flange plane is 8-the flange plane.

Detailed Description

As shown in fig. 1 to 4, the active dust removal centrifugal fan of the locomotive traction converter comprises a barrel-shaped outer cover 1, an outer rotor motor 2 which is positioned in the outer cover 1 and coaxially fixed in the middle of the bottom surface of the outer cover 1, a centrifugal blade 3 fixedly installed on the outer rotor, wherein the outer cover 1 is provided with dust removal holes 4 which are vertically arranged, the upper ends of the dust removal holes 4 are communicated with the inner cavity of the outer cover 1, the lower ends of the dust removal holes 4 are provided with dust collection boxes which are communicated with the dust removal holes 4 and movably connected to the outer cover 1, the bottom surface of the outer cover 1 is provided with vent holes 5, the open end of the outer cover 1 is covered and fixedly connected with a filter plate 6 with filter mesh holes, when the centrifugal blade 3 rotates, air enters from the open end of the outer cover 1, foreign matters passing through the centrifugal blade 3 are thrown out of the outer cover 1 through the dust removal holes 4 under the action of centrifugal force, and the air after dust removal is discharged through the vent holes 5.

The working principle is as follows: during the use, place this centrifugal fan in the converter and be fixed in on the converter cabinet door, start when external rotor electric machine 2, the external rotor rotates, centrifugal blade 3 rotates, the air is inhaled the back from the air intake of converter cabinet door and is inhaled the 1 inner chamber of dustcoat after filter 6 carries out the prefilter with the air again, after the foreign matter in the air contacts with centrifugal blade 3, because centrifugal blade 3 is in high-speed pivoted state in the course of the work, the foreign matter can be adsorbed on centrifugal blade 3, when centrifugal blade 3 is through dust removal hole 4 departments, the foreign matter on the centrifugal blade 3 can throw away the foreign matter outside locomotive traction converter through dust removal hole 4 under the effect of centrifugal force, thereby reach the effect of carrying out the cooling air dust removal to the converter. The air after dust removal is discharged to the part outside the outer cover 1 in the converter through the vent holes 5 to dissipate heat of low-power electric elements in the converter; meanwhile, the dust collecting box collects the foreign matters thrown out from the dust removing holes 4 in a centralized manner so as to avoid polluting other parts in the converter, and meanwhile, the dust collecting box is detachably connected with the outer cover 1 and needs to be used for a period of time to perform periodic centralized treatment on the foreign matters in the dust collecting box.

In the specific embodiment, the inner cavity of the outer cover 1 is cylindrical, and the space is fully utilized. The centrifugal blades 3 are four and are circumferentially and uniformly distributed on the circumferential surface of the outer rotor. The dust removing holes 4 are located at a portion of the housing 1 corresponding to a portion where the centrifugal blades 3 transition from the horizontal position to the vertical downward position (where corresponding means that when the outer rotor motor 2 rotates clockwise, the centrifugal blades 3 rotate in a circle, a portion where the centrifugal blades 3 transition from the horizontal position to the vertical downward position refers to a lower right portion of the circle, and a portion of the housing 1 corresponding thereto is a lower right portion of the housing 1; when the outer rotor motor 2 rotates clockwise, a portion where the centrifugal blades 3 transition from the horizontal position to the vertical downward position refers to a lower left portion of the circle, and a portion of the housing 1 corresponding thereto is a lower left portion of the housing 1, which is conventionally understood by those skilled in the art), preferably, the dust removing holes 4 are located at a portion of the housing 1 corresponding to an initial portion where the centrifugal blades 3 transition from the horizontal position to the vertical downward position, the foreign matters can be thrown out at the starting position of the centrifugal blade 3 positioned at the lower half part circle of the outer cover 1, and the dust removal effect is better.

The external shape of dustcoat 1 is the square body and the global of four sides of square body is for level or vertical arrangement for the hole depth of dust removal hole 4 is darker, avoids the hole depth of dust removal hole 4 more shallow to make the foreign matter in the dust removal hole 4 reverse entering dustcoat 1 in.

The ventilation holes 5 are four fan-shaped ventilation holes 5 concentric with the circular groove, and are circumferentially and uniformly distributed in an annular area formed by the middle of the bottom surface of the outer cover 1 and the inner wall of the outer cover 1 in a surrounding mode, the area of the ventilation holes 5 is enlarged as far as possible, the air quantity entering the converter is increased, and the heat dissipation effect is increased and decreased.

In this embodiment, an annular flange plane 8 is fixed to the bottom of the outer rotor motor 2, four first connection holes are evenly distributed on the flange plane 8, four second connection holes matched with the first connection holes are evenly distributed in the middle of the bottom surface of the outer cover 1, and four bolts respectively penetrate through the first connection holes and the second connection holes to achieve fixed connection between the outer rotor motor 2 and the outer cover 1. The filter plate 6 is square and the area of the filter plate is larger than that of the outer cover 1, four cylindrical buckles 7 matched with four clamping holes of a cabinet door of the locomotive traction converter are fixedly connected to four corners of the filter plate 6 respectively, the original structure of the converter is not changed, and the centrifugal fan and the converter are fixed by fully utilizing the original structure of the converter. The filter meshes on the filter plate 6 are square holes with the diameter of 3mm x 3 mm.