JPS59222056A - Cooling method of slip ring of valve water wheel generator - Google Patents

Abstract

PURPOSE:To eliminate the mixlture of exhaust gas which contains fine wears of a brush in cooling air by introducing atmospheric air through an air guide unit and an inspection shaft, and supplying the reduced amount of cooling air of a generator chamber. CONSTITUTION:An exhaust tube 7 which is opened with atmosphere out of a generator is provided from an exhaust port of a slip ring chamber 1a through the interior of an inspection shaft of a valve water wheel generator. In this case, the pressure of the cooling air to be guided from a generator chamber 15 to a slip ring chamber 1a is higher than the atmospheric pressure, and the exhaust gas of the chamber 1 is exhausted through the interior of the tube 7 into the atmosphere. In this case, the wear powder of a brush produced in the chamber 1 is discharged together with atmospheric air directly into the atmosphere.

Description

Detailed Description of the Invention (Technical Field to Which the Invention Pertains) The present invention relates to a slip valve turbine generator in which cooling air inside the generator room is circulated by an eleventh blower device disposed outside the generator room. Regarding the cooling method of the ring.When cooling the slip ring of this type of valve water turbine generator, fine carbon particles generated by the wear of the brushes are released together with the cooling air discharged from the slip ring chamber after the slip ring has cooled. It is important to ensure that it does not get on the circulation cooling circuit or enter the generator room.

[Prior art and its problems]

-FF The key to a valve-turbine generator is to select the shape of the stator core, which is longer than that of a normal water-turbine generator based on its external conditions, and its output. The rotational speed is often low in comparison to the above, and the self-tracing wind type as in general generators is not used in 1. Sufficient cooling efficiency can be obtained with cooling means such as γL, ρ, etc. Normally, a blower device installed inside the dog cover performs forced closed circulation of the cooling air inside the generator room, and heat exchange is performed in the middle of the circulation circuit. A method is adopted in which the cooling efficiency is increased by arranging a container and cooling the air. For example, the valve water turbine generator shown in FIG.
jwa JK til? Power generation by 3 (number of chambers) 11 upstream of Hatake power generation chamber 15]
j space and downstream i1! II! and between the rotor magnetic poles 60 of the generator, and the stator core 5. Stator coil! ;a7
After cooling, the outer periphery of the stopper pin 5 is formed between it and the valve wall 16) and the jill+ 71 inside the top cover 9. , Kukto 1
The liquid then flows into the front chamber I8 of the top cover 9. The various parts of the estrous machine were cooled and warmed, and the 111 workshop 18 ((
After being cooled by the heat exchanger 8 disposed in front of the blower device 3, the inflowing cooling air is sent into the generator room 15 again by the device 1j17 for closed circulation cooling. A circuit is formed.

In the pulp water turbine generator described in No. 111 (2), in order to cool the slip ring 1 fixed to the shaft 14 and located outside the generator chamber 15 (i4), the slip ring 1 is installed inside the slip ring chamber 1a. A part of the cooling air in the L-shaped chamber 15 is supplied to the slip ring chamber 1a, and the supplied cooling air cools the slip ring and is then discharged into the top cover 9. ) When the brushes of the slip link 10 wear out, fine carbon powder is released into the interior of the multi-chamber 1a and cover 9 along with the exhaust gas, and the blower device 3 (therefore generates electricity) If mixed with the one-theta cooling air sent into the interior of the cabin 15, the above-mentioned abrasion particles will adhere to the surface of the stator coil 28 and cause problems such as lowering its insulation resistance. In a valve water turbine generator, in order to prevent the occurrence of the above-mentioned trouble, a filter is installed to filter the cooling air discharged from the slip ring chamber a from the flage. 4 is 7, ring ring chamber 1a
V(j et al) a). Then, force・1−wear of the relevant flange (rIi minute)
+1: Redundant filtration with only filter 4 - (especially impossible 0
However, there is still no risk that the wear particles leaking through the filtration and mixed into the circulating air will enter the generator room 15 and cause the above-mentioned trouble. The present invention provides an external inspection system for cooling the slip ring of an aircraft departing from the Harz Water Depot in the United States, or a slip ring cooling method for the slip ring in the aircraft deposited at the Harz Water Depot in the United States. In view of the drawbacks of the 7-run wear-out removal process, ``(-'r+iJ) +l'i'j 11V of air is completely discharged from the outside of the generator and placed in the circulating cooling circuit of the generator room (in addition, Harz water J is used to replenish the cooling air discharged together with the abrasive powder of the furan).
'II Shiro% provides a cooling method for the slison ring of the machine'
J4+ is said to be for begging purposes.

(The main point of the invention is to meet the objectives of the present invention, in accordance with the cooling method for a surinon link described above.)
・Lubu sword, J11 pit 3' city, among the 4 inspection shafts)
Slip on 315" ring chamber's 471 kiron (> +
After generating electricity, the exhaust gas connected to the atmosphere of the generator, lit 1
11 with 1 placed! Mark 7 JI shaft yL
J) J[A sleeve cap is installed in the exhaust pipe, and the exhaust pipe of the above-mentioned slot ring chamber] is discharged completely into the outside atmosphere. Outside air η (introduced through the inspection shaft 7) into the generator room '0'
) By replenishing the cooling air for 1 minute, the circulation of the generator room and the exhaust air containing wear particles of the brushes of the slip ring chamber can be removed without reducing the cooling air circulation. This completely prevents 2) σ) from being mixed into the cooling air.

[Embodiments of the invention]

In Fig. 2, the inside of the top cover 9 and the output 1iT, n
The L-blower unit v'? 3, the cooling air is sent into the cooling chamber 15 between the upstream space and the downstream space of the generator chamber.
1 to between the rotor magnet 6 and the stator zoi:, 11
．． ．． Fi, after cooling the stator coil 58, etc., there is a trace formed between the first round of the stator core 5 and the valve wall 16, and a trace inside the knob cover 9 for every 7nF) HI? It flows into the interior of the front chamber 18 of the shuttle cover 9. The lightning, the cooling air that cools each part of the rock, raises the temperature, and flows into the front head 18 is placed in front of the blower device 3 or is cooled by the blower device 2 (8) and then cooled by the blower device 3. It is fed into the generator room 15 again to form a circulation cooling circuit.It is fixed to the generator 14 and the generator fJ
A portion of the cooling air that has flowed into the generator room 5 to cool the slip ring 1 located inside the slip ring room 1a provided outside the L aircraft room 15 is guided into the slip ring room 1a. This is similar to the case of a conventional valve turbine generator.

However, in the valve-turbine generator of the present invention, an exhaust pipe 7 is provided which opens from the exhaust port of the slip ring chamber A through the inside of the inspection shaft 11 of the valve-turbine generator to the atmosphere outside the generator. . In this case, since the pressure of the cooling air led from the generator room 15 to the slip ring chamber 1a is higher than the atmospheric pressure, the exhaust gas from the slip ring chamber 1a passes through the inside of the exhaust pipe 7 and is discharged into the atmosphere. The abrasion powder of the brushes generated in the ring chamber la is directly released into the atmosphere together with the exhaust gas, and as in the case of a conventional valve water turbine generator, the abrasion powder of the brushes is transferred to the generator chamber 1.
It pollutes the circulating cooling air flowing into the generator, but all < r, c < rc.

Furthermore, in order to replenish the cooling nitrogen gas that passes through the exhaust pipe 7 and enters the outside air together with the wear particles of the run 7, a replenishment air introduction section 12"z equipped with a filter 13 is provided at a suitable location on the inspection shaft 11. . At that time, the blower device 3 blows the air inside the tonof cover 9 into the generator room 15 (K
As the air is fed in, the outside air filtered by the filter 13 is transferred from the supply air fiJ personnel section 12 to the inspection shaft 11.
The reduced amount of cooling air that is attracted to the inside of the top cover 9 and lost to the outside air through the exhaust vibrator 7'lX is reliably replenished.

[Effect of Ill]

As explained above, the present invention is a valve water turbine power generator equipped with an inspection shaft that circulates the cooling air inside the generator room and communicates with the outside by means of a Zoro 17 device placed outside the generator room. In a method for cooling a slip ring of a generator, an exhaust pipe is arranged inside the inspection shaft of the valve water turbine generator, and the exhaust pipe is connected from the exhaust port of the slip ring chamber to the atmosphere outside the generator, and supplementary air is placed at a suitable place on the inspection shaft. If the introduction part is not provided, the exhaust air from the slip ring chamber is discharged through the exhaust air 112 into the air outlet 15, and outside air is introduced through the make-up air introduction part and the inspection shaft. ．． In order to replenish the reduced number of cooling air in the root chamber, the abrasion powder of the brushes mixed in the air in the slip ring chamber should be completely discharged to the outside and the generator's It does not contaminate the cooling air, and has the effect of reducing the amount of cooling air lost to the atmosphere together with the above-mentioned wear particles.

4. Fig. ii1'vr t/ls Simple theory J Fig. 1 shows the slip link cooling method of the conventional slip link. Schematic line cross-sectional diagram of the upstream part of the valve turbine generator showing the cooling method of the slip link -1゜l...slip ring, 1a...slip link chamber,
3... 70W device, 7... Exhaust pipe, 9... Top cover, 11... Inspection shaft, 12... Pa bleed air introduction part, 15... Generator room.

Claims (1)

[Claims] 1) Ichiiso's slip link cooling method from a valve water turbine equipped with an inspection shaft that connects the cooling air inside the generator room through line 1 and leads to the outside illumination. So, the above-mentioned Kurf turbine? +
tm's Ii! i. An exhaust pipe is provided inside the inspection shaft from the exhaust port of the slip ring chamber to the atmosphere outside the machine, and a make-up air inlet is provided at a suitable location in the inspection shaft, as described in I'lII. Exhaust air from the Surinoblinog room is completely discharged to the outside atmosphere through the exhaust pipe, and outside air is introduced through the make-up air introduction part and the inspection tank to replenish the cooling air lost in the generator room. 7. (Cooling slip ring of valve water turbine generator featuring Rokotoke), ■J vise method