KR20010061728A - Air puffing unit for removing cool water residence in stator of generator - Google Patents

Air puffing unit for removing cool water residence in stator of generator Download PDF

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Publication number
KR20010061728A
KR20010061728A KR1019990064260A KR19990064260A KR20010061728A KR 20010061728 A KR20010061728 A KR 20010061728A KR 1019990064260 A KR1019990064260 A KR 1019990064260A KR 19990064260 A KR19990064260 A KR 19990064260A KR 20010061728 A KR20010061728 A KR 20010061728A
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KR
South Korea
Prior art keywords
solenoid valve
air
generator stator
generator
pressure
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KR1019990064260A
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Korean (ko)
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KR100332662B1 (en
Inventor
윤병길
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김형국
한전기공주식회사
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Priority to KR1019990064260A priority Critical patent/KR100332662B1/en
Publication of KR20010061728A publication Critical patent/KR20010061728A/en
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Publication of KR100332662B1 publication Critical patent/KR100332662B1/en

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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
    • H02K9/26—Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means

Abstract

PURPOSE: An apparatus for discharging a cool water of a stator of a generator is provided to dry moisture contained in a stator of a generator at a high drying efficiency. CONSTITUTION: An air is supplied through a compressor to be injected to a winding of a generator stator. The air is injected through a main valve(2). A moisture contained in the air entered through the main valve is removed through a moisture removing filter(3). A dried air passed through the moisture removing filter(3) is transferred to a generator stator winding(1) through the first or the second solenoid valves(11,12) and the third solenoid valve(13). The fourth solenoid valve(14) is operated in turns with the third solenoid valve(13). The air is discharged through the third solenoid valve(13) and the fourth solenoid valve(14). The first and second solenoid valves(11,12) are connected in parallel. The second solenoid valve(12) functions to regulate a pressure through a pressure regulator(15). The third solenoid valve(13) functions to change a path of the dried air entered and discharged. A pressure gauge(20) and a moisture gauge(21) are installed on a path of a pressured air between the third solenoid valve(13) and the stator winding(1).

Description

발전기고정자 냉각수 배출장치{Air puffing unit for removing cool water residence in stator of generator}Air puffing unit for removing cool water residence in stator of generator

본 발명은 발전기고정자 냉각수 배출장치에 관한 것으로, 발전기 고정자 권선에 압축공기가 순환되도록 한 압축공기 순환 장치를 부가하고, 전기 고정자 권선에 냉각수가 남아 있는 경우 압축공기를 불어 냉각수를 배출토록 한 냉각수 배출장치에 관한 것이다.The present invention relates to a generator stator cooling water discharge device, comprising a compressed air circulator for circulating compressed air to the generator stator windings, and blows the compressed air when the coolant is left in the electrical stator windings to discharge the cooling water. Relates to a device.

현재 일반적으로 발전기 고정자 권선에 냉각수가 남아 있으면 발전기 고정자 권선에 대한 건전성을 평가하기 위하여 공기 누설 시험 및 진공 시험시 누설 통로를 막을 수 있어 정확한 고장점 확인이 어려우며 절연저항 측정시 판단의 오류를 초래한다. 이를 위하여 기존은 에어 블로우 방식과 진공건조 방식을 사용하는데, 에어 블로우 방식은 공기 배출시 소음이 발생하고, 진공건조 방식은 냉각수 배출시간이 많이 소요되는 문제점이 있었다.Currently, if the coolant is left in the generator stator windings, it is difficult to identify the exact point of failure and error in the determination of insulation resistance because the leakage passage can be blocked during the air leakage test and the vacuum test to evaluate the integrity of the generator stator windings. . To this end, the conventional air blow method and the vacuum drying method is used, the air blow method is a noise generated during the air discharge, the vacuum drying method has a problem that takes a lot of cooling water discharge time.

본 발명은 이를 해소코자 하는 것으로, 본 발명의 목적은 건조공기를 공급하여 일정 압력에 이르면 순간적으로 공기를 배출토록 하는 장치를 제공하여 발전기 고정자에 포함된 수분을 건조 효율이 높게 건조시킬 수 있도록 하는 것이다.The present invention is to solve this, an object of the present invention is to supply a drying air to provide a device to discharge the air instantaneously when a certain pressure is reached to dry the moisture contained in the generator stator with high drying efficiency will be.

도 1 은 본 발명의 구성도,1 is a block diagram of the present invention,

도 2 는 본 발명의 작동 순서를 나타낸 설명도이다.2 is an explanatory diagram showing an operation procedure of the present invention.

도면의 주요 부분에 대한 부호의 설명Explanation of symbols for the main parts of the drawings

1;발전기 고정자 권선, 2;메인 밸브,1, generator stator winding, 2; main valve,

3;습기제거 필터, 11;제 1 솔레노이드 밸브,3; dehumidification filter, 11; first solenoid valve,

12;제 2 솔레노이드 밸브, 13;제 3 솔레노이드 밸브,12; second solenoid valve, 13; third solenoid valve,

14;제 4 솔레노이드 밸브, 15;압력 레귤레이터,14, fourth solenoid valve, 15; pressure regulator,

20. 21;게이지20. 21; Gauge

즉, 본 발명은 발전기 고정자 권선에 건조공기를 주입하고, 건조공기는 제 1 또는 제 2 솔레노이드 밸브와 제 3 솔레노이드를 거쳐 발전기 고정자 권선으로 보내고, 고정자 권선을 거쳐 지나온 공기는 제 3 솔레노이드 밸브의 배출통로를 지나며, 일정 간격으로 배출하는 제 4 솔레노이드 밸브를 거쳐 배출하는 과정을 반복하여 고정자 권선을 건조시키는 발전기 고정자 냉각수 배출장치를 제공하려는 것이다.That is, the present invention injects dry air into the generator stator winding, and the dry air is sent to the generator stator winding through the first or second solenoid valve and the third solenoid, and the air passing through the stator winding is discharged from the third solenoid valve. It is to provide a generator stator cooling water discharge device for drying the stator windings by passing the passage through the fourth solenoid valve discharged at regular intervals.

이하 본 발명을 도면을 참조하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the drawings.

도 1 은 본 발명의 구성도로, 발전기 고정자 권선(1)에 건조공기를 주입하도록 컴프레서 등을 통하여 공급받는 공기는 매인 밸브(2)를 통하여 유입되고, 매인 밸브를 통하여 유입되는 공기에 포함된 습기는 습기 제거 필터(3)를 통하여 제거되며, 습기 제거 필터(3)를 통과한 건조 공기는 제 1 또는 제 2 솔레노이드 밸브(11 또는 12)와 제 3 솔레노이드 밸브(13)를 거쳐 발전기 고정자 권선(1)으로 이송된다. 발전기 고정자 권선(1)을 거쳐 지나온 공기는 제 3 솔레노이드 밸브(13)를 지나며, 배출하는 위치의 제 3 솔레노이드 밸브(13)와 교대로 작동하는 제 4 솔레노이드 밸브(14)를 지나서 배출토록 이루어진다. 상기 제 1 및 제 2 솔레노이드 밸브(11 및 12)는 병렬로 접속되며, 제 2 솔레노이드 밸브(12)는 압력 레귤레이터(15)를 통하여 압력을 조정 가능토록 기능 한다. 상기 제 3 솔레노이드 밸브(13)는 건조공기의 유입 및 배출의 경로를 바꾸는 기능을 가지는 것으로 구비한다. 상기 제 3 솔레노이드 밸브(13)와 발전기 고정자 권선(1)사이의 압력공기 통로에는 압력 게이지(20) 및 습도 게이지(21)를 설치한다.1 is a configuration of the present invention, the air supplied through the compressor or the like to inject dry air into the generator stator winding (1) is introduced through the main valve (2), the moisture contained in the air introduced through the main valve Is removed through the dehumidification filter (3), and the dry air passing through the dehumidification filter (3) passes through the first or second solenoid valve (11 or 12) and the third solenoid valve (13) to the generator stator winding ( Transferred to 1). The air passing through the generator stator windings 1 passes through the third solenoid valve 13 and passes through the fourth solenoid valve 14 alternately working with the third solenoid valve 13 in the discharge position. The first and second solenoid valves 11 and 12 are connected in parallel, and the second solenoid valve 12 functions to adjust the pressure via the pressure regulator 15. The third solenoid valve 13 is provided to have a function of changing the path of inflow and discharge of dry air. A pressure gauge 20 and a humidity gauge 21 are installed in the pressure air passage between the third solenoid valve 13 and the generator stator winding 1.

이와 같이 구성한 본 발명은 발전기 고정자 권선(1)에 컴프레서를 통한 압축공기를 제공하되 본 발명의 구성을 통하여 제공 가능토록 하는바, 압축공기를 제공하는 컴프레서의 도시는 생략하고 설명한다. 즉, 압축공기가 유입되면 메인밸브(2)를 통하여 공기가 유입되며, 일반적으로 컴프레서를 통하여 유입되는 공기에는 습기가 포함되므로 습기제거 필터(3)를 통하여 습기를 제거시킨다. 이어 발전기 고정자 권선(1)에 안내되는 공기의 압력이 설정 압력을 유지하면 제 1 솔레노이드 밸브(11)를 통과시킨후 제 3 솔레노이드 밸브(13)를 통과토록 하여 발전기 고정자 권선(1)으로 압축 건조 공기가 유입되도록 하고, 발전기 고정자 권선(1)을 통하여배출되는 공기는 제 3 솔레노이드 밸브(13)를 지나 제 4 솔레노이드 밸브(14)에서 대기한다. 이는 순간적으로 메인밸브(2)를 지나 압축된 건조 공기가 발전기 고정자 권선(1)으로 인가되므로 상대적으로 압력이 저하되어 원하는 수준으로 발전기 고정자(1)에 포함된 수분을 제거치 못하는 것을 막기 위함이다. 이 상태에서 원하는 설정 압력에 이르면, 메인밸브(2)는 잠그고 제 4 솔레노이드 밸브(14)는 열도록 작동시켜 순간적으로 압축공기를 배출하여 발전기 고정자 권선에 포함된 습기를 배출하는 것이다. 이를 수회 반복하여 발전기 고정자 권선에 포함된 습기를 제거시킨다. 이 경우 완벽한 습기 제거를 위하여 제 3 솔레노이드 밸브(13)의 위치가 상승한 위치로 이동토록 하면 발전기 고정자 권선(1)으로 유입 및 배출하는 공기의 통로가 바뀌게 된다. 본 발명에서는 공급하는 압축공기의 압력을 조정할 필요가 있을 경우 제 1 솔레노이드 밸브(11)를 차단시키고, 압력 레귤레이터(15)와 제 2 솔레노이드 밸브(12)를 통하여 압축공기가 이동되도록 설정한다. 본 발명에서 솔레노이드 밸브(13)의 작동을 선택 및 제어하는 것은 압력 게이지를 통한 압력의 변화와 작동 프로그램에 의하여 순서를 자동으로 조정토록 함이 좋은바, 이러한 기능을 수행하는 기술 자체는 통상의 기술이므로 본 발명에서는 이에 대한 설명 자체는 생략하였다.The present invention configured as described above provides the compressed air through the compressor to the generator stator winding (1), so that it can be provided through the configuration of the present invention, the illustration of the compressor providing compressed air will be omitted and described. That is, when compressed air is introduced, air is introduced through the main valve (2), and in general, air is introduced through the compressor to remove moisture through the moisture removal filter (3). Then, when the pressure of the air guided to the generator stator winding (1) maintains the set pressure, it passes through the first solenoid valve (11) and passes through the third solenoid valve (13) to compress and dry the generator stator winding (1). The air is introduced, and the air discharged through the generator stator winding 1 waits at the fourth solenoid valve 14 through the third solenoid valve 13. This is to prevent the compressed air from passing through the main valve 2 to the generator stator winding 1 at a moment, so that the pressure is lowered and the moisture contained in the generator stator 1 cannot be removed to a desired level. . In this state, when the desired set pressure is reached, the main valve 2 is closed and the fourth solenoid valve 14 is operated to open to instantaneously discharge compressed air to discharge moisture contained in the generator stator windings. This is repeated several times to remove moisture contained in the generator stator windings. In this case, if the position of the third solenoid valve 13 is moved to the elevated position for complete moisture removal, the passage of air flowing into and out of the generator stator winding 1 is changed. In the present invention, when it is necessary to adjust the pressure of the compressed air to be supplied, the first solenoid valve 11 is shut off, and the compressed air is set to move through the pressure regulator 15 and the second solenoid valve 12. In the present invention, selecting and controlling the operation of the solenoid valve 13 may automatically adjust the order according to the pressure change and the operation program through the pressure gauge. Therefore, the description itself is omitted in the present invention.

이상에서 설명한 본 발명은 전술한 실시예 및 도면에 의해 한정되는 것은 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어 명백할 것이다.The present invention described above is not limited to the above-described embodiments and drawings, and various permutations, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those who have

이상과 같이 본 발명은 발전기 고정자 권선에 포함된 습기를 제거토록 압축공기를 발전기 고정자에 제공하는 기술로 압축공기 자체에 포함된 습기는 자체 습기제거 필터를 통과케 하여 습기를 제거하는 건조 공기를 수득토록 하며, 수득한 건조공기는 발전기 고정자 권선에 제공되어 내부의 습기를 건조시키는 기능을 수행하며 일정 압력에 이르면 순간적으로 배출토록 하여 습기를 동시에 배출토록 하여 습기 제거 효율을 증대시키며, 필요시 압축 건조 공기의 통로를 바꿔 공급토록 하여 발전기 고정자에 포함된 건조 공기의 잔류 확률을 없앨 수 있도록 기능 한다.As described above, the present invention provides a compressed air to the generator stator to remove the moisture contained in the generator stator windings. The moisture contained in the compressed air itself passes through its own moisture removal filter to obtain dry air. The obtained drying air is provided to the generator stator winding to dry the internal moisture. When the pressure reaches a certain pressure, the dried air is discharged at the same time to discharge the moisture at the same time. By changing the passage of air to supply it to function to eliminate the residual probability of dry air contained in the generator stator.

Claims (1)

발전기 고정자 권선(1)에 건조공기를 주입하도록 컴프레서 등을 통하여 공급받는 공기는 매인 밸브(2)를 통하여 유입되고, 매인 밸브를 통하여 유입되는 공기에 포함된 습기는 습기 제거 필터(3)를 통하여 제거되며, 습기 제거 필터(3)를 통과한 건조 공기는 제 1 또는 제 2 솔레노이드 밸브(11 또는 12)와 제 3 솔레노이드 밸브(13)를 거쳐 발전기 고정자 권선(1)으로 이송되며, 발전기 고정자 권선(1)을 거쳐 지나온 공기는 제 3 솔레노이드 밸브(13)를 지나며, 제 3 솔레노이드 밸브(13)를 지나 일시에 배출토록 작동하는 제 4 솔레노이드 밸브(14)를 지나서 배출토록 이루어지고, 상기 제 1 및 제 2 솔레노이드 밸브(11 및 12)는 병렬로 접속되며, 제 2 솔레노이드 밸브(12)는 압력 레귤레이터(15)를 통하여 압력을 조정 가능토록 기능 하며, 상기 제 3 솔레노이드 밸브(13)는 건조공기의 유입 및 배출의 경로를 바꾸는 기능을 갖도록 구성하며, 상기 제 3 솔레노이드 밸브(13)와 발전기 고정자 권선(1)사이의 압력공기 통로에는 압력 게이지(20) 및 습도 게이지(21)를 설치한 것을 특징으로 하는 발전기 고정자 냉각수 배출장치.Air supplied through a compressor or the like to inject dry air into the generator stator winding 1 is introduced through the main valve 2, and moisture contained in the air introduced through the main valve is passed through the moisture removal filter 3. Removed, and the dry air passing through the moisture removal filter (3) is transferred to the generator stator winding (1) via the first or second solenoid valve (11 or 12) and the third solenoid valve (13), the generator stator winding The air passing through (1) passes through the third solenoid valve 13, passes through the third solenoid valve 13, and passes through the fourth solenoid valve 14, which is operated to discharge at a time, and is discharged. And the second solenoid valves 11 and 12 are connected in parallel, the second solenoid valve 12 functions to adjust the pressure through the pressure regulator 15, and the third solenoid valve 13 is The pressure gauge 20 and the humidity gauge 21 are installed in the pressure air passage between the third solenoid valve 13 and the generator stator winding 1. Generator stator cooling water discharge device characterized in that.
KR1019990064260A 1999-12-29 1999-12-29 Air puffing unit for removing cool water residence in stator of generator KR100332662B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104348300A (en) * 2014-11-07 2015-02-11 沈阳黎明航空发动机(集团)有限责任公司 Air blast cooling method for high-speed brushless direct-current generator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200448017Y1 (en) 2008-07-08 2010-03-10 한국서부발전 주식회사 Drain apparatus for stator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104348300A (en) * 2014-11-07 2015-02-11 沈阳黎明航空发动机(集团)有限责任公司 Air blast cooling method for high-speed brushless direct-current generator
CN104348300B (en) * 2014-11-07 2016-08-24 沈阳黎明航空发动机(集团)有限责任公司 A kind of quenching method of high-speed brushless direct-current generator

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