SU1423805A1

SU1423805A1 - Screw compressor

Info

Publication number: SU1423805A1
Application number: SU864099902A
Authority: SU
Inventors: Роберт Врамшабович Дарбинян; Владимир Сергеевич Чуфаровский
Original assignee: Предприятие П/Я А-3605
Priority date: 1986-06-09
Filing date: 1986-06-09
Publication date: 1988-09-15

Abstract

Изобретение позвол ет снизить удельное энергопотребление. Ведущий и ведомый роторы 6 и 7 установле; ы на подшипниках 4 и 5. Разгрузочное устройство подшипников выполнено в виде невращающейс герметичной пары поршень-цилиндр, расположенное со стороны камеры 3 нагнетани и снабжено перекладиной 11. Нагрузочна полость 12 сообщена с,источником давлени . Перекладина 11 жестко св зана с подшипниками 5 и со штоком 10 поршн 9. Рассто ни между ос ми ротора 6 и штока 10 выбираетс из соотношени а A/( + 1), где А - рассто ние между ос ми роторов;. Т, F - площадь поперечного сечени винтовой части соответственно роторов 6 и 7. Дл того, чтобы за поршнем 9 не образовывалось остаточное давление в цилиндре 8 выполнено вентил ционное отверстие 14, которое может соедин тьс с всасывающей, камерой 2. Перекладина перемещаетс по направл ющим штифтам 15. 2 ил. The invention makes it possible to reduce specific energy consumption. The leading and driven rotors 6 and 7 are installed; The bearings are 4 and 5. The bearings discharge device is made in the form of a non-rotating hermetic piston-cylinder pair located on the side of the pressure chamber 3 and provided with a crossbar 11. A load cavity 12 is in communication with a pressure source. The bar 11 is rigidly connected to the bearings 5 and to the piston rod 10 of the piston 9. The distance between the rotor axes 6 and the piston rod 10 is selected from the ratio A / (+ 1), where A is the distance between the axles of the rotors ;. T, F is the cross-sectional area of the screw part of the rotors 6 and 7, respectively. In order to prevent residual pressure in the piston 9 from forming a cylinder 8, there is a vent hole 14 that can be connected to the suction chamber 2. The crossbar moves along the guides pins 15. 2 Il.

Description

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Claims

Formula of the invention A screw compressor comprising a housing with suction and discharge chambers mounted on bearings of the driving and driven rotors and an unloading device of bearings made in the form of a non-rotating hermetic pair of piston-cylinder, the loading cavity of which is connected to a pressure source, characterized in that, in order to reduce specific energy consumption, the unloading device is located on the side of the discharge chamber and is equipped with a crossbar rigidly connected to rotor bearings and to the piston rod, We riche the distance between the axes # of the driving rotor and the piston rod is selected from the following relation:

a = A / + 1). um where A is the distance between the axes of the rotors ^

- the cross-sectional area of the screw part, respectively, of the leading and driven rotors.