SU897636A1

SU897636A1 - Thrust-relieving device

Info

Publication number: SU897636A1
Application number: SU782696149A
Authority: SU
Inventors: Евгений Наумович Чернов; Евгений Васильевич Данилов; Эльхан Мир-Давуд Мамедов
Original assignee: Предприятие П/Я Р-6654
Priority date: 1978-12-11
Filing date: 1978-12-11
Publication date: 1982-01-15

Description

(54) УПОРОРАЗГРУЖАЮЩЕЕ УСТРОЙСТВО(54) PORTABLE UNLOADING DEVICE

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Изобретение относитс к лопаточным машинам, в частности, к упороразгружающим устройствам, преимущественно водометных движетелей судов.The invention relates to blade machines, in particular, to discharging devices, mainly jet propulsion vessels.

Известно упороразгружающее устройство лопаточной машины, преимущественно судового водометного движител , содержащее цилиндр с поршнем, смонтированным на валу лопаточной машины соосно с ним, причем цилиндр закреплен на фундаменте, а полость цилиндра соединена с источником давлени , при этом поршень св зан с валом лопаточной машины 1.It is known that a paddle machine, mainly a ship's jet propulsion device, is equipped with a cylinder with a piston mounted on the shaft of the blade machine coaxially with the cylinder attached to the foundation, and the cylinder cavity is connected to the shaft of the blade machine 1.

Однако потери мощности, св занные с утечками рабочей жидкости через щелевые уплотнени , а также трением жидкости о вращающийс порщень, понижают КПД лопаточной машины.However, the power loss associated with leakage of working fluid through slit seals, as well as friction of the fluid against the rotating borehole, reduces the efficiency of the blade machine.

Цель изобретени - увеличение КПД лопаточной машины.The purpose of the invention is to increase the efficiency of the blade machine.

Дл достижени цели упороразгружающее устройство снабжено упорным подшипником , посредством которого поршень св зан с валом лопаточной машины, при этом тгоршень зафиксирован в цилиндре от вращени вокруг оси вала.To achieve the goal, the thrust device is equipped with a thrust bearing, by means of which the piston is connected to the shaft of the blade machine, while the piston is fixed in the cylinder against rotation around the axis of the shaft.

На чертеже представлена схема упороразгружающего устройства, встроенного в линию валопровода водометного движени .The drawing shows a diagram of an unloading device integrated into the jet propulsion line.

Устройство содержит посаженный на вал 1 лопаточной машины упорный подшипник 2, расположенный в поршне 3, наход щемс в закрепленном на фундаменте цилиндре 4. Порщень и цилиндр имеют герметические уплотнени .5 и 6. Полость 7 цилиндра соединена трубопроводом 8 с источником давлени , например напорной полостью 9 водометного движител 10, приводимого от двигател . В линию валопровода встроен основной упорный подшипник И. Порщень 3 зафиксирован (на чертеже не прказано) в цилиндре 4 от вращени вокруг оси вала 1 любым известным способом, например шпонкой.The device contains a thrust bearing 2 mounted on the shaft 1 of the blade machine and located in the piston 3 located in the cylinder 4 fixed on the foundation. The piston and cylinder have hermetic seals .5 and 6. The cavity 7 of the cylinder is connected by a pipeline 8 with a pressure source, for example a pressure cavity 9 jet engine 10, driven by the engine. The main thrust bearing I is integrated into the shaft line. Porschen 3 is fixed (not shown in the drawing) in cylinder 4 from rotation around the axis of shaft 1 by any known method, for example with a key.

Устройство работает следующим образом .The device works as follows.

Claims

20 When the propulsion unit 10 is operating, the axial load is transferred to the main thrust bearing 11. At the same time, the water pressure from the pressure chamber 9 of the propulsion unit through the pipeline 8 and the cavity 7 acts on the piston 3, loading the thrust bearing with 2 parts of the axial force and thereby unloading the thrust bearing 11. The amount of unloading depends on the area of the piston 3 and is limited by the load capacity of the thrust bearing.

2. By installing a stop-unloading device into the shaft shaft line, when the shaft rotation speed changes, the stop changes in proportion to the pressure in the jet's pressure section, which automatically ensures the accepted load distribution between the thrust bearing and the stop-loading devices in all operating modes of the propulsion unit. If this device is used in another area, an extraneous source of liquid or gas operating pressure can be applied, for example, an autonomous pump. In this case, the automatic distribution of the load, if necessary, can be obtained by any known method that provides a proportional change in the working movement depending on the magnitude of the axial load. The proposed thrust) -Ja1Dee device by. -Equality | HVTs are characterized by sushi, yy-lesser magnitude of power loss, ig-wh.e., the efficiency of a propulsion system and implies its use in high-power jet propulsion, as well as in other devices that require high axial loads at an increased durability. Claims: Padlocking device for a paddle machine, mainly a marine jet propulsion unit, containing a cylinder with a piston mounted on the shaft of a paddle machine coaxially with the cylinder attached to the foundation, and the cavity of the cylinder connected to a pressure source, while the piston is connected to the shaft of the blade machine , characterized in that, in order to increase the efficiency of the blade machine, the thrust device is provided with a thrust bearing, by means of which the piston is connected with the shaft of the blade machine, with that the piston in the cylinder is fixed against rotation about the shaft axis. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 458480, cl. B 63 H 23/34, 1972.