SU862317A1

SU862317A1 - Device for feeding liquid to electrical machine rotor

Info

Publication number: SU862317A1
Application number: SU752186690A
Authority: SU
Inventors: Александр Несанелевич Лурье; Анатолий Николаевич Ангуков; Александр Антонович Дукштау; Глеб Степанович Щеголев; Геннадий Антонович Яблонский; Михаил Лазаревич Стеклов
Original assignee: Предприятие П/Я А-7676
Priority date: 1975-11-04
Filing date: 1975-11-04
Publication date: 1981-09-07

Description

(54) УСТРОЙСТВО ПОДВОДА ЖИДКОСТИ В РОТОР ЭЛЕКТРИЧЕСКОЙ МАШИНЫ(54) DEVICE FOR LEVEL SUPPLY IN THE ROTOR OF THE ELECTRIC MACHINE

ii

Изобретение относитс к электромашиностроению и, в част1 ости, к устррйствам поавода хлапагвнга в электрических машинах , например в гидрогенераторах, с жиакостнь1М охлаждением ротора.The invention relates to electrical engineering and, in particular, to chlapagnga plants in electric machines, for example, in hydrogenerators, with a rotor cooling system.

И«эвестно устройство подвода воды и масла в системе гидротурбинной установки , имеющее маслоприемник с втулкой, тело которой состоит из двук концентрич-, но расположеннык труб, служащих дл подачи масла, и водоприемник, состо щий из напорной,сливной и дренажных камер, Образованных радиальными неподвижными кольцевыми перегородками i. Дл от- 5 делени напорной воды от сливной и дренажных в корпусе водоприемника применены кольцевые и торцовые уплотнени .And "there is a device for supplying water and oil in the system of a hydro turbine installation, which has an oil receiver with a sleeve, the body of which consists of two concentric but located pipes that serve to supply oil, and a water receiver consisting of pressure, drain and drainage chambers Formed by radial fixed ring partitions i. To separate the discharge water from the drain and drainage in the case of the intake body, ring and face seals are used.

Однако в известном устройстве вели ки протечки воды через уплотнени из напорной камеры в сливную (при этом вода не достигает ротора генератора), составл ющие 50-70% рабочего расхода.However, in the known device, water leaks through the seals from the pressure chamber into the drain (the water does not reach the generator rotor), which constitute 50-70% of the working flow.

Повышенные протечки воды вызывают необходимость установки насосов повышенной мощности.Increased water leakage necessitates the installation of high-capacity pumps.

Холодна вода протечек смешиваетс в сливной камере с гор чей водой, выкод щей из ротора, снижает общую температуру воды в сливном трубопроводе, в котором производитс термоконтроль, и тем самым искажает измерени теплового состо ни ротора.Cold water leaks are mixed in the drain chamber with hot water discharged from the rotor, reduces the overall temperature of the water in the drain pipe in which thermal control is performed, and thereby distorts the measurement of the thermal state of the rotor.

Кроме того, устройство недостаточно надежно. Конструкци уплотнени предусматривает посто нное прижатие уплотн ющего элемента к поверхности трени . В случае даже кратковременного отсутстви воды в рабочих камерах водоприемника уплотнени немедленно перегреютс и разрушатс ; продукты разрушени уплотнений закупор т полые проводники обмоток ротора, что приведет к аварии.In addition, the device is not reliable enough. The design of the seal provides for a constant pressing of the sealing element to the friction surface. In the event of even a short-term lack of water in the working chambers of the receiving water, the seals will immediately overheat and deteriorate; seal breakage products plugged hollow conductors of the rotor windings, leading to an accident.

Claims

It is also known a device for supplying a fluid to the rotor of an electric machine, comprising measures that cover the shaft, discharge, drainage and drainage annular ca. 3, 6 measures formed by a sleeve mounted on the rotor shaft and having protruding annular pereoroacs interconnected and non-disposable annular elements surrounding the sleeve. , and sealing plates 2, This device is free of drawbacks. However, the presence of sealing plates installed with fixed gaps reduces the reliability of the device due to fluid leakage. The aim of the invention is to increase the operational reliability of the device by eliminating fluid leakage. This goal is achieved by the fact that the sealing plates are made overlapping the gaps between the partitions and the fixed elements, have radial grooves on the working surfaces and are fixed on the fixed elements, the latter being fulfilled H-about. different forms. FIG. 1 shows the proposed device, a longitudinal section; in fig. 2, node I in FIG. 1. The device comprises a chamber 1, a drain chamber 2, and drainage chambers 3-5, formed by a sleeve 6 having interconnected protruding, annular partitions 7, and fixed ring elements 8-12, having a H-shape. The sealing plates 13, which overlap the gaps between the first fences 7, and the five fixed elements 8-12, have radial grooves 14, through which the liquid enters the working surfaces, are plastic to lubricate them. The cooling fluid from the infusion pipe is fed through the pipeline into the pressure chamber and then through the channel 15 in the sleeve 6 into the rotor of the electric machine. Protor rotor, the liquid through channel 16 in the sleeve 6 enters the drain chamber 2, and from there through the pipeline back to the pump. Water leaks through seals are collected in drainage chambers 3-5 and discharged through pipes. The sealing plates 13 are made of elastic material, for example rubber, and fixed to fixed elements 8-12 by means of clamping washers 17 and bolts 18. Overlapping gaps between the fixed and moving elements of the device for supplying coolant to the rotor of the electric machine excludes liquid leakage. through the gaps, the possibility of mixing the cold liquid with the already heated and losing it, and thereby provides an increase in the reliability of the device and the entire electric machine. Claim 1. Device for supplying fluid to the rotor of an electric machine, comprising annular chambers enclosing a shaft, discharge chambers and drainage chambers formed by a sleeve mounted on the rotor's shaft, having protruding annular partitions interconnected, and fixed annular elements covering the sleeve, and sealing plates, characterized in that, in order to increase operational reliability by eliminating fluid leakage, sealing plates are made to cover gaps between the towns and fixed elements have radial grooves on the working surfaces and are fixed to the fixed member. 2. The device according to claim 1, that is, the said fixed elements are in an H-shaped form. Sources of information taken into account during the examination 1. Steklov M.L. Horizontal hydraulic turbines. Mechanical Engineering, 1974 ..

2. Japan patent M, cl. H 02 K 9/193, 1974 (prototype). 862317 Hanofl