CN109256903B - Dust removal and cooling structure for brush holder of slip ring and carbon brush of synchronous motor collector - Google Patents
Dust removal and cooling structure for brush holder of slip ring and carbon brush of synchronous motor collector Download PDFInfo
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- CN109256903B CN109256903B CN201710566945.3A CN201710566945A CN109256903B CN 109256903 B CN109256903 B CN 109256903B CN 201710566945 A CN201710566945 A CN 201710566945A CN 109256903 B CN109256903 B CN 109256903B
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- brush holder
- filter
- brush
- air guide
- dust collection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/28—Cooling of commutators, slip-rings or brushes e.g. by ventilating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The invention discloses a dust removal and temperature reduction structure for a brush holder of a carbon brush of a slip ring of a current collection of a synchronous motor, which comprises a brush holder body, a dust collection and air guide branch pipe, a dust collection and air guide main pipe, a filter and an air suction power source, wherein the brush holder body is fixed on a brush holder, the periphery of the carbon brush of the brush holder body is provided with a dust collection groove, the dust collection and air guide branch pipe is arranged on the brush holder, the input end of the dust collection and air guide branch pipe is connected with the dust collection groove of the brush holder body, the filter is arranged on one side of the brush holder, the dust collection and air guide main pipe is connected with the output end of the dust collection and air guide branch pipe and the input end of the filter, and the air suction power source is connected with the output end of the filter. The structure effectively overcomes the defect that the traditional synchronous motor is easy to cause faults due to carbon powder accumulation, can automatically absorb the worn carbon powder, can reduce the heat effect of the carbon brush, and ensures the normal and reliable operation of the synchronous motor.
Description
Technical Field
The invention relates to a dust removal and temperature reduction structure for a collector slip ring carbon brush holder of a synchronous motor.
Background
The synchronous motor is widely applied to industries such as metallurgy and the like, a rotor winding of the synchronous motor is connected with a direct current power supply, the rotor rotates, an external direct current power supply supplies power to a current collection slip ring on the rotor through a carbon brush, the current collection slip ring and the rotor rotate synchronously, the carbon brush is fixed by a brush holder, and the brush holder is fixed on a brush frame. In the running process of the synchronous motor, the slip ring and the carbon brush are in sliding friction, and are worn and consumed along with the sliding friction of the carbon brush and the slip ring in the running process, the ground carbon powder is adsorbed on the surface of the slip ring when the oil mist and the humidity in air are increased in a production field, and the carbon powder adsorbed on the surface of the slip ring is gradually accumulated, so that potential safety hazards are brought to the running of the synchronous motor, firstly, the insulation resistance on the surface of the slip ring is reduced, and the slip ring is grounded or a short circuit fault is caused when a positive ring and a negative ring are conducted; secondly, because carbon powder is accumulated on the surface of the current collection slip ring, particularly on the periphery of the carbon brush, and because direct current is conducted between the carbon brush and the current collection slip ring and sliding friction is also conducted, the influence of the heat effect is worsened due to the accumulation of the carbon powder on the periphery of the carbon brush, and once the carbon powder is accumulated to a certain degree, the current collection slip ring is easy to generate ring fire, so that the problems of serious abrasion of the surface of the current collection slip ring, high-temperature melting of a copper brush holder and the like are caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a dust removal and temperature reduction structure for a collector slip ring carbon brush holder of a synchronous motor, which effectively overcomes the defect that the traditional synchronous motor has faults easily caused by carbon powder accumulation, can automatically absorb worn carbon powder, can reduce the heat effect of a carbon brush and ensure the normal and reliable operation of the synchronous motor.
In order to solve the technical problem, the dust removal and cooling structure for the brush holder of the slip ring and the carbon brush of the current collection of the synchronous motor comprises a brush holder body, dust collection air guide branch pipes, a dust collection air guide main pipe, a filter and an air suction power source, wherein the brush holder body is fixed on a brush holder, the dust collection air guide branch pipes, the dust collection air guide main pipe, the filter and the air suction power source are fixed on the brush holder, the brush holder body is provided with dust collection grooves at the periphery of the carbon brush, the dust collection air guide branch pipes are arranged on the brush holder, the input ends of the dust collection air guide branch pipes are connected with the dust collection grooves of the brush holder body, the filter is arranged on one side of the brush holder, the dust collection air guide main pipe is connected with the output ends of the dust collection air guide branch pipes and the input ends of the filter, and the air suction power source is connected with the output ends of the filter.
Further, the air suction power source is a vacuum air suction pump arranged on one side of the brush holder.
Further, the air suction power source is a negative pressure guide pipe communicated with the inner cavity of the motor, and the negative pressure guide pipe is connected with the output end of the filter.
Furthermore, the structure also comprises a switching valve, the air suction power source is a vacuum air suction pump arranged on one side of the brush holder and a negative pressure guide pipe communicated with the inner cavity of the motor, the negative pressure guide pipe is connected with the output end of the filter, and the switching valve is respectively connected with the output end of the filter, the vacuum air suction pump and the negative pressure guide pipe so as to switch the output end of the filter to be connected with the vacuum air suction pump or the negative pressure guide pipe.
The dust removal and temperature reduction structure for the brush holder of the carbon brush of the collector slip ring of the synchronous motor adopts the technical scheme, namely the structure comprises a brush holder body, a dust collection air guide branch pipe, a dust collection air guide main pipe, a filter and an air suction power source, wherein the brush holder body is fixed on a brush holder, the dust collection air guide branch pipe, the dust collection air guide main pipe, the filter and the air suction power source are arranged on the periphery of the carbon brush, the dust collection air guide branch pipe is arranged on the brush holder, the input end of the dust collection air guide branch pipe is connected with the dust collection groove of the brush holder body, the filter is arranged on one side of the brush holder, the dust collection air guide main pipe is connected with the output end of the dust collection air guide branch pipe and the input end of the filter, and the air suction power source is connected with the output end of the filter. The structure effectively overcomes the defect that the traditional synchronous motor is easy to cause faults due to carbon powder accumulation, can automatically absorb the worn carbon powder, can reduce the heat effect of the carbon brush, and ensures the normal and reliable operation of the synchronous motor.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a schematic diagram of a dust removal and temperature reduction structure for a brush holder of a slip ring and a carbon brush of a synchronous motor according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a schematic view of the brush holder body in this structure.
Detailed Description
For example, as shown in fig. 1, fig. 2 and fig. 3, the dust removing and cooling structure for a brush holder of a slip ring carbon brush used in a synchronous motor current collector of the present invention includes a brush holder body 2 fixed on a brush holder 1, a dust collecting air guide branch pipe 3, a dust collecting air guide main pipe 4, a filter 5 and an air suction power source, wherein the brush holder body 2 is provided with a dust collecting groove 22 around a carbon brush 21, the dust collecting air guide branch pipe 3 is provided on the brush holder 1, and an input end of the dust collecting air guide branch pipe is connected to the dust collecting groove 22 of the brush holder body 2, the filter 5 is provided on one side of the brush holder 1, the dust collecting air guide main pipe 4 is connected to an output end of the dust collecting air guide branch pipe 3 and an input end of the filter 5, and the air suction power source is connected to an output end of the filter 5.
Preferably, the suction power source is a vacuum suction pump 61 arranged on one side of the brush holder.
Preferably, the suction power source is a negative pressure conduit 62 communicated with the inner cavity of the motor, and the negative pressure conduit 62 is connected with the output end of the filter 5.
Preferably, the structure further comprises a switching valve 7, the suction power sources are a vacuum suction pump 61 arranged on one side of the brush holder 1 and a negative pressure conduit 62 communicated with the inner cavity of the motor, the negative pressure conduit 62 is connected with the output end of the filter 5, and the switching valve 7 is respectively connected with the output end of the filter 5, the vacuum suction pump 61 and the negative pressure conduit 62 so as to switch the output end of the filter 5 to be connected with the vacuum suction pump 61 or the negative pressure conduit 62.
The structure can absorb carbon powder automatically, can reduce the heat effect of the carbon brush, and is suitable for synchronous motors adopting a current collection slip ring structure and even direct current motors adopting a commutator structure.
The carbon brush is fixed by the brush holder body in the structure, a circle of air suction grooves are formed in the periphery of the brush holder body, carbon powder ground by the carbon brush is collected through the air suction grooves, the air suction grooves of the brush holder bodies are led out through the insulated dust absorption air guide branch pipes and are converged and guided into the air inlet of the filter through the insulated dust absorption air guide main pipe, and the air suction port of the filter is communicated with an air suction power source. The structure has two sources of air suction power sources, one is to fully utilize the characteristic that the inner cavity of the high-speed motor has negative pressure, namely the atmospheric pressure of the inner cavity of the motor is smaller than the outside to form certain vacuum degree, the outside air can flow back to the inner cavity of the motor, the negative pressure is introduced by utilizing an insulating negative pressure guide pipe through arranging a vent on the large cover of the motor, the negative pressure not only can be used as the air suction power source, but also can effectively balance the atmospheric pressure of the inner cavity and the outer cavity of the motor, which is very valuable to the end cover type sliding bearing bush synchronous motor because the negative pressure can cause bearing bush lubricating oil to permeate into the inner cavity of the motor to pollute the surface of a winding to influence insulation; the other is that a vacuum air pump is directly installed as a suction power source. Two kinds of power supplies that induced draft simultaneously can coexist, switch through switching over the valve. The two air suction power sources are communicated to the peripheral air suction grooves of the brush holder body through the filter, the insulated dust suction air guide branch pipes and the dust suction air guide main pipe and finally serve as suction force for absorbing carbon brush powder, so that the function of self-removing the carbon powder can be realized, and the surface of the brush holder body and the friction surfaces of the carbon brush and the current collection slip ring can take away heat energy due to air flow kinetic energy, so that the influence of the heat effect on the surface of the carbon brush is reduced, and the normal and reliable operation of the synchronous motor is ensured.
Claims (3)
1. The utility model provides a dust removal cooling structure for synchronous machine collection electrical slip ring carbon brush holder, is including being fixed in the brush holder body on the brush yoke, its characterized in that: still include dust absorption air guide branch pipe, dust absorption air guide house steward, filter and the power supply that induced drafts, the brush holder body is equipped with the dust absorption groove at the carbon brush periphery, dust absorption air guide branch pipe is located the brush yoke and the input is connected the dust absorption groove of brush holder body, the filter is located brush yoke one side, dust absorption air guide house steward connects dust absorption air guide branch pipe output and filter input, the power supply that induced drafts is connected the filter output, the power supply that induced drafts is the negative pressure pipe of intercommunication motor cavity, the negative pressure pipe is connected the filter output.
2. The dust removal and temperature reduction structure for the brush holder of the carbon brush of the slip ring of the synchronous motor according to claim 1, wherein: the air suction power source is a vacuum air suction pump arranged on one side of the brush holder.
3. The dust removal and temperature reduction structure for the brush holder of the carbon brush of the slip ring of the synchronous motor according to claim 1, wherein: the structure further comprises a switching valve, the air suction power source is a vacuum air suction pump arranged on one side of the brush holder and a negative pressure guide pipe communicated with the inner cavity of the motor, the negative pressure guide pipe is connected with the output end of the filter, and the switching valve is respectively connected with the output end of the filter, the vacuum air suction pump and the negative pressure guide pipe so as to switch the output end of the filter to be connected with the vacuum air suction pump or the negative pressure guide pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566945.3A CN109256903B (en) | 2017-07-12 | 2017-07-12 | Dust removal and cooling structure for brush holder of slip ring and carbon brush of synchronous motor collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710566945.3A CN109256903B (en) | 2017-07-12 | 2017-07-12 | Dust removal and cooling structure for brush holder of slip ring and carbon brush of synchronous motor collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109256903A CN109256903A (en) | 2019-01-22 |
| CN109256903B true CN109256903B (en) | 2022-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710566945.3A Active CN109256903B (en) | 2017-07-12 | 2017-07-12 | Dust removal and cooling structure for brush holder of slip ring and carbon brush of synchronous motor collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109256903B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350714A (en) * | 1999-05-10 | 2002-05-22 | 沃依特·西门子水力发电两合公司 | Electric machine |
| CN2809985Y (en) * | 2005-08-04 | 2006-08-23 | 张宏伟 | Carbon brush assembly for generator |
| CN102403842A (en) * | 2011-06-30 | 2012-04-04 | 哈尔滨电机厂有限责任公司 | Automatic-dust-collection carbon brush device |
-
2017
- 2017-07-12 CN CN201710566945.3A patent/CN109256903B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350714A (en) * | 1999-05-10 | 2002-05-22 | 沃依特·西门子水力发电两合公司 | Electric machine |
| CN2809985Y (en) * | 2005-08-04 | 2006-08-23 | 张宏伟 | Carbon brush assembly for generator |
| CN102403842A (en) * | 2011-06-30 | 2012-04-04 | 哈尔滨电机厂有限责任公司 | Automatic-dust-collection carbon brush device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109256903A (en) | 2019-01-22 |
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