SU727885A1

SU727885A1 - Thrust bearing segment

Info

Publication number: SU727885A1
Application number: SU762414888A
Authority: SU
Inventors: Анатолий Васильевич Терещенко
Original assignee: Tereshchenko Anatolij V
Priority date: 1976-10-27
Filing date: 1976-10-27
Publication date: 1980-04-15

Description

Изобретение относится к машиностроению и может быть использовано в подпятниках гидрогенераторов и других быстроходных опорах.The invention relates to mechanical engineering and can be used in the thrust bearings of hydrogenerators and other high-speed bearings.

Известен сегмент подпятника машины с вертикальным валом, содержащий мао· ⁵сивное основание и расположенную на нем плиту, имеющую антифрикционный, слой на рабочей поверхности и ребра на противолежащей поверхности, образованные^ стенками каналов для охлаждающей среды.. При этом высота ребер и толщина меж— реберных участков по всей площади сегмента одинаковая tn··A segment of the vertical bearing of a machine with a vertical shaft is known, containing a mao · ⁵ solid base and a plate located on it, having an antifriction layer on the working surface and ribs on the opposite surface, formed by the walls of the channels for the cooling medium .. Moreover, the height of the ribs and the thickness between the costal sections over the entire area of the segment are the same tn

Основным недостатком известного сег—^ мента является то, что по мере движения охлаждающей среды по межреберным каналам под поверхностью трения из области пониженных в область повышенных температур, т.е. в область выходной и внешней кромок сегмента, охлаждающая среда подогревается. Ввиду этого интенсивность теплоотдачи падает, в результате чего не обеспечивается выравнивание темпера2 гуры по площади сегмента, поэтому температурные деформации верхней плиты, отрицательно влияющие 'на несущую способность сегмента, остаются на высоком уровне. Эффект теплоотдачи из области трения по мере Движения потока ввиду его подогрева, снижается.The main disadvantage of the known segment is that as the cooling medium moves along the intercostal channels under the friction surface from the region of lowered to high temperature, i.e. in the area of the outlet and outer edges of the segment, the cooling medium is heated. In view of this, the heat transfer rate decreases, as a result of which the temperature does not equalize over the segment area; therefore, the temperature deformations of the upper plate, which negatively affect the bearing capacity of the segment, remain at a high level. The effect of heat transfer from the friction region as the flow moves due to its heating is reduced.

Цель изобретения — повышение эффективности теплоотвода и несущей способности.The purpose of the invention is to increase the efficiency of heat sink and bearing capacity.

Это достигается тем, что в предлагаемой конструкции ребра выполнены с возрастающей высотой в тангенциальном направлении к выходной кромке сегмента ив радиальном направлении к периферии сегмента, при этом межреберные участки плиты выполнены с уменьшающейся в тех же направлениях толщиной.This is achieved by the fact that in the proposed design, the ribs are made with increasing height in the tangential direction to the output edge of the segment and in the radial direction to the periphery of the segment, while the intercostal sections of the plate are made with thickness decreasing in the same directions.

Входные кромкиГ ребер могут бь^ть расположены ’ под острым углом к рабочей поверхности и выполнены заостренными.The input edges of the ribs can be located at an acute angle to the working surface and are made pointed.

На фиг. 1 изображен предлагаемый сегмент подпятника, план; на фиг. 2 - то же, разрез А-А на фиг. 1; на фиг. 3 —In FIG. 1 shows the proposed segment of the thrust bearing, plan; in FIG. 2 is the same, section AA in FIG. 1; in FIG. 3 -

З' ' '727885 разрез Б-Б на фиг. 1; на фиг. 4 - разрез В-В на фиг. 1; на фиг. 5 — разрез Г—Г на фиг. 2.З '' '727885 section BB in FIG. 1; in FIG. 4 is a section BB of FIG. 1; in FIG. 5 - section G — D in FIG. 2.

Сегмент подпятника содержит массивное основание 1 и расположенную на нем плиту 2, имеющую антифрикционный слой З^на рабочей, поверхности и ребра 4 на противолежащей поверхности, образованные стенками каналов 5 для охлаждающей среды. Ребра 4 выполнены с возрастающей высотой в тангенциальном направлении к выходной кромке 6 сегмента и в радиальном направлении к перефирийной кромке 7 сегмента.' При этом межреберные участки 8 плиты 2 выполнены с уменьшающейся в тех же направлениях толщиной. Входные кромки 9 ребер 4 расположены под острым углом к рабочей поверхности с антифрикционным слоем 3 ;и заострены. На^; ' основании 1 сегмента и в надреберной части плиты 2 вы-, полнены фаски 10 и. 11 соответственно.The thrust bearing segment contains a massive base 1 and a plate 2 located on it, having an antifriction layer Z ^ on the working surface and ribs 4 on the opposite surface, formed by the walls of the channels 5 for the cooling medium. The ribs 4 are made with increasing height in the tangential direction to the output edge 6 of the segment and in the radial direction to the peripheral edge 7 of the segment. ' In this case, intercostal sections 8 of plate 2 are made with thickness decreasing in the same directions. The input edges 9 of the ribs 4 are located at an acute angle to the working surface with an antifriction layer 3; and are pointed. On ^; 'the base of 1 segment and in the ribs of the plate 2 are chamfered 10 and filled. 11 respectively.

Под действием вращающегося ротора масло из маслованны подпятника поступает к входной 12 и внутренней 13 . кромкам сегмента.Under the action of a rotating rotor, the oil from the oil bath of the thrust comes to the input 12 and internal 13. the edges of the segment.

По мере движения жидкости в межреберных каналах из области пониженных в области повышенных температур сегмента, т. е. в направлении выходной и наружной кромок, интенсивность теплоотдачи из области трения нарастает ввиду увеличивающейся площади теплоотда• ющей поверхности.As the fluid moves in the intercostal canals from the region of the segment lowered in the region of elevated temperature, that is, in the direction of the outlet and outer edges, the heat transfer from the friction region increases due to the increasing heat-transfer surface.

Кроме того, интенсивность теплоот: дачи из области трения в охлаждающую среду увеличивается (обратно пропорционально толщине) по ходу движения жидкости ввиду уменьшающейся толщи межреберной части 8 плиты 2 сегменте. Ламинарность потока смазки обеспечивается фасками 10 и 11, а также за5 остренными кромками 9 ребер 4.In addition, the intensity of heat: supply from the friction region to the cooling medium increases (inversely proportional to the thickness) in the direction of the liquid due to the decreasing thickness of the intercostal part 8 of the plate 2 segment. Laminarity of the lubricant flow is ensured by chamfers 10 and 11, as well as by 5 pointed edges of 9 ribs 4.

Благодаря улучшенному охлаждению сегмента значительно увеличивается несущая способность подпятника.Thanks to the improved cooling of the segment, the bearing capacity of the thrust bearing increases significantly.

. ·. ·

Claims

The invention relates to mechanical engineering and can be used in the subgroups of hydrogenerators and other high-speed supports. A well-known vertical shaft shaft mopoline segment, containing a solid base and a plate located on it, having an antifriction layer on the working surface and ribs on the opposite surface, formed by the walls of the channels for the cooling medium AT ETOM the height of the ribs and the thickness of the intercostal areas along the entire area of the segment. svdinai til- -. The main disadvantage of the known segment is that as the cooling medium moves along the intercostal ducts under the surface of the friction from the area of lowered to the area of elevated temperature, i.e. in the region of the exit and outer edges of the segment, the cooling medium is heated. In view of this, the heat transfer intensity decreases, as a result of which the tempering of the segmented area is not equalized, therefore, the temperature deformations of the upper plate, negatively on the bearing capacity of the segment, increase at a high level. The effect of heat transfer from the area of friction as the movement of the flow due to its heating is reduced. The purpose of the invention is to increase the efficiency of the heat sink and the carrying capacity. This is achieved by the fact that in the proposed construction, the ribs are made with increasing height in the tangential direction to the output segment of the segment and radially to the periphery of the segment, while the intercostal areas of the plate are made with the thickness decreasing in the same directions. The input edges of the ribs can be placed at an acute angle to the working surface and are made pointed. FIG. 1 shows the proposed sub-segment, a plan; in fig. 2 is the same, section A-A in FIG. one; in fig. 3 - -, 3, 7 section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 is a section of YYD in FIG. 2. A subframe segment contains a massive base 1 and a plate 2 located on it, having an anti-friction layer of the working surface and ribs 4 on the opposing surface formed by the walls of the cooling channels 5 for the cooling medium. The ribs 4 are made with a rising height in the tangential direction to the exit edge 6 of the segment and in the radial direction to the periphery edge 7 of the segment. At the same time, the intercostal areas 8 of the plate 2 are made with the thickness decreasing in the same directions. The input edges of the 9 ribs 4 are located at an acute angle to the working surface with antifriction layer 3: and are pointed. On; basis of 1 segment and in the pre-ribs part of the plate 2 you-. chamfer 10 and are full. 11 respectively. Under the action of the rotating rotor:; the oil from the oil bath of the subgun goes to the inlet 12 and the inner 13. the edges of the segment. As the fluid moves in the intercostal ducts from the region of lowered elevated segment temperatures, i.e., in the direction of the outgoing and outer edges, the intensity of heat transfer from the region of friction increases due to the increasing area of the heat transfer surface. In addition, the intensity of heat supply from the friction area to the cooling medium increases (inversely tolcine) as the fluid moves due to the decreasing thickness of the intercostal part 8 of the plate 2 segment. The laminar flow of the lubricant is provided by chamfers 10 and 11, as well as by the sharp edges 9 of the ribs 4. Due to the improved cooling of the segment, the carrying capacity of the sub-tube is significantly increased. Claim 1. A suture segment comprising a base and a plate located thereon having an anti-friction layer on the working surface and ribs on the opposite surface formed by channel walls for a cooling medium, characterized in that in order to increase the efficiency of heat dissipation and carrying capacity, the ribs are made with increasing height in the tangential direction to the output segment and in the radial direction to the periphery of the segment, while the intercostal areas of the plate are made with decreasing in the same, thick.

2. The liner segment according to Claim. 1, characterized in that the entrance edges of the ribs are located at an acute angle to the working surface and are made pointed. : Sources of information taken into account during the examination 1. USSR Copyright Certificate No. 131399 Cl. F 16 C 17/08, I960.

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