阅读说明：本技术 一种均压式恒压碳刷支撑装置 (Pressure equalizing type constant-pressure carbon brush supporting device ) 是由 张兴旺 张兴辉 王岩禄 魏玉国 马永良 刘宇 王艳武 田昕 李敏 于 2019-10-30 设计创作，主要内容包括：本发明公开一种均压式恒压碳刷支撑装置,由第一波纹管、第二波纹管、第一连通支管、第二连通支管、环管、主管、配重块、密封缸体、气门组成,环管通过主管与密封缸体连通,第一连通支管和第二连通支管一端从环管引出,另一端分别接第一波纹管和第二波纹管,第一波纹管和第二波纹管与第一碳刷、第二碳刷接触的一端是密封的,第一波纹管和第二波纹管中的气压相同,作用在端部的压力相同。第一波纹管和第二波纹管由H级绝缘材料制成可在一定范围内自由伸缩,密封缸体上密封面是软质改性聚氯乙烯,可通过调整密封材料上面的配重块重量来间接调整第一波纹管和第二波纹管端部的压力值。(The invention discloses a pressure equalizing type constant-pressure carbon brush supporting device which comprises a first corrugated pipe, a second corrugated pipe, a first communicating branch pipe, a second communicating branch pipe, a ring pipe, a main pipe, a balancing weight, a sealing cylinder body and an air valve. The first corrugated pipe and the second corrugated pipe are made of H-grade insulating materials and can freely stretch out and draw back within a certain range, the upper sealing surface of the sealing cylinder body is made of soft modified polyvinyl chloride, and the pressure values of the ends of the first corrugated pipe and the second corrugated pipe can be indirectly adjusted by adjusting the weight of the balancing weight on the sealing material.)

1. The utility model provides a pressure-equalizing constant voltage carbon brush strutting arrangement which characterized in that: the carbon dioxide gas valve is characterized by comprising a first corrugated pipe (1), a second corrugated pipe (2), a first communicating branch pipe (3), a second communicating branch pipe (4), a ring pipe (5), a main pipe (6), a balancing weight (7), a sealing cylinder body (8) and a valve (9), wherein the ring pipe (5) is communicated with the sealing cylinder body (8) through the main pipe (6), one ends of the first communicating branch pipe (3) and the second communicating branch pipe (4) are led out from the ring pipe (5), the other ends of the first corrugated pipe (1) and the second corrugated pipe (2) are respectively connected with the other ends of the first corrugated pipe (1) and the second corrugated pipe (2), the first corrugated pipe (1) and the second corrugated pipe (2) are in contact with a first carbon brush (10) and a second carbon brush (11), the first corrugated pipe (1) and the second corrugated pipe (2) are made of H-grade insulating materials.

The technical field is as follows:

the invention relates to a pressure equalizing type constant-pressure carbon brush supporting device.

Background art:

the carbon brushes used by the hydraulic generator all need to use a constant-pressure spring as a rear end support, so that a certain pressure is formed between the carbon brushes and the collecting rings. Each carbon brush corresponds to one constant-voltage spring, but the pressure consistency of the constant-voltage springs is poor, so that the pressure between each carbon brush and the collecting ring is different, the contact resistance is also different, the current passing through each carbon brush is different, the current of each individual carbon brush is larger, the temperature is higher, even the individual carbon brush is burnt, the safe and stable operation of the generator is influenced, and no specific measure can be used for solving the problems that the contact pressure between each carbon brush and the collecting ring is different and the contact resistance difference is larger at present.

The invention content is as follows:

the invention aims to disclose a voltage-equalizing constant-voltage carbon brush supporting device, which can ensure that the contact pressure and the contact resistance of each carbon brush are consistent with those of a collecting ring, so that the current of each carbon brush is equal and the temperature rise is consistent. The technical scheme of the invention is as follows: the sealing device comprises a first corrugated pipe, a second corrugated pipe, a first communicating branch pipe, a second communicating branch pipe, a ring pipe, a main pipe, a balancing weight, a sealing cylinder body and a valve, wherein the ring pipe is communicated with the sealing cylinder body through the main pipe, one end of the first communicating branch pipe and one end of the second communicating branch pipe are led out from the ring pipe, the other end of the first communicating branch pipe and the other end of the second communicating branch pipe are respectively connected with the first corrugated pipe and the second corrugated pipe, one ends of the first corrugated pipe and the second corrugated pipe, which are in contact with a first carbon brush and a second carbon brush, are sealed, the first corrugated pipe and the second corrugated pipe are.

The technical effects are as follows:

the telescopic lengths of the first corrugated pipe (1) and the second corrugated pipe (2) meet the use requirement of the carbon brush abrasion loss. The first corrugated pipe (1) and the second corrugated pipe (2) are made of H-grade insulating materials. The upper sealing surface of the sealing cylinder body (8) is made of soft modified polyvinyl chloride, the horizontal position of the sealing cylinder body can change up and down along with the difference between the internal pressure and the external pressure of the sealing cylinder body (8), and the up-down change amount meets the use requirement of the expansion amount of the corrugated pipe. And the specific size design of the balancing weight (7) is carried out according to the specific requirements of different carbon brushes on the supporting pressure. The air valve (9) can inject air into the sealed cylinder body (8), and the counterweight block (7) is stopped at a proper position through the upper surface of the sealed cylinder body which can float up and down, so that certain pressure is kept in the sealed cylinder body (8). Pressure sources of the first corrugated pipe (1) and the second corrugated pipe (2) are all from the sealing cylinder body (8), so that output pressures of contact ends of the first corrugated pipe (1) and the second corrugated pipe (2) with the first carbon brush (10) and the second carbon brush (11) are equal, and therefore the contact pressure between the electric brush and the collecting ring can be guaranteed to be consistent, the contact resistance is equal, and the current flowing through the electric brush is equal in magnitude. The pressure in the cylinder body is mainly determined by the weight of the balancing weight (7), so the pressure output by the end parts of the first corrugated pipe (1) and the second corrugated pipe (2) is constant in the telescopic range of the corrugated pipes.

Each branch pipe in the pressure equalizing type constant-pressure carbon brush supporting device is communicated with the sealing cylinder body, the air pressure is the same, the pressure applied to the electric brush by the contact end part of the corrugated pipe and the electric brush is the same, the pressure of each electric brush and the pressure of the collecting ring are the same, the contact resistance is similar, the current flowing through each carbon brush is similar, and the current, the temperature rise and even burning of the individual carbon brush can be avoided.

Description of the drawings:

FIG. 1 is a top view of a voltage-sharing constant-voltage carbon brush supporting device

FIG. 2 is a sectional view taken along line A-A of FIG. 1

The specific implementation mode is as follows:

as shown in fig. 1 and fig. 2, a pressure-equalizing constant-pressure carbon brush supporting device comprises a first corrugated pipe 1, a second corrugated pipe 2, a first communicating branch pipe 3, a second communicating branch pipe 4, an annular pipe 5, a main pipe 6, a balancing weight 7, a sealing cylinder 8 and an air valve 9. The ring pipe 5 is communicated with the sealing cylinder body 8 through the main pipe 6, one end of the branch pipe 3 and one end of the branch pipe 4 are led out from the ring pipe 5, the other end of the branch pipe is respectively connected with the first corrugated pipe 1 and the second corrugated pipe 2, and one ends of the first corrugated pipe 1 and the second corrugated pipe 2, which are in contact with the first carbon brush 10 and the second carbon brush 11, are sealed. The telescopic length of the first corrugated pipe 1 and the second corrugated pipe 2 meets the use requirement of the carbon brush abrasion loss. The first bellows 1 and the second bellows 2 are made of H-class insulating material. The upper sealing surface of the sealing cylinder body 8 is made of soft modified polyvinyl chloride, the horizontal position of the sealing cylinder body 8 can change up and down along with the difference between the internal pressure and the external pressure of the sealing cylinder body 8, and the up-down change amount meets the use requirement of the expansion amount of the corrugated pipe. The specific size design of the counterweight 7 is carried out according to the specific requirements of different carbon brushes on the supporting pressure. The air valve 9 can inject air into the sealed cylinder 8, and the counterweight 7 is stopped at a proper position through the upper surface of the sealed cylinder which can float up and down, so that certain pressure is in the sealed cylinder 8. The pressure sources of the first corrugated pipe 1 and the second corrugated pipe 2 are all from the sealing cylinder body 8, so that the output pressures of the contact ends of the first corrugated pipe 1 and the second corrugated pipe 2 with the first carbon brush 10 and the second carbon brush 11 are equal, thereby ensuring that the contact pressure between the electric brush and the collecting ring is consistent, the contact resistance is equal, and the current flowing through the electric brush is equal. The pressure in the cylinder is mainly determined by the weight of the counterweight 7, so the pressure output from the ends of the first corrugated pipe 1 and the second corrugated pipe 2 is constant in the telescopic range of the corrugated pipes.