SU1742526A1 - Vapor-jet vacuum pump - Google Patents

Abstract

The steam jet vacuum pump contains a vertically installed hermetic housing (1) having a flange (2) for connection to a volume to be pumped out, and an outlet socket (3). Arranged in the lower part of the housing (1) is a trough (6) which is filled with working fluid and is equipped with a heater (7). Installed in the housing (1) along its longitudinal axis is a steam line (4) having nozzles (5), provided in the direction of the height thereof, for the exit of the jets of the working fluid vapour. Located in the housing (1) in the area where the foot of the steam line (4) is arranged is a hydraulic closure (8) which ensures overflow of the condensate into the trough (6). The cooling system for cooling the housing (1) is designed in the form of a tube (9), which is wound spirally onto the housing wall and has sockets (10) for the supply and removal of coolant. In this arrangement, a part of the wall of the housing (1) is formed by stiffening ribs which consist, in the section of the winding of the tube (9), of concave sections (11), which are arranged in the winding direction, are in contact with tubes (9) accommodated in them and have a radius of curvature that is essentially equal to the outside radius of the tube (9), and of conical sections (12) connected to said sections and tapering in the direction of the steam jets emerging from the nozzles (5). <IMAGE>

Description

Фие.1Phie.1

Claims (1)

Формула изобретенияClaim Пароструйный вакуумный насос, содержащий герметичный корпус, систему охлаждения корпуса в виде навитой по спирали на корпус трубки с хладагентом, кипятильнике рабочей жидкостью и паропроводы с соплами, отличающийся тем, что, с целью снижения веса насоса, увеличения быстроты его действия, понижения предельного остаточного давления, часть корпуса образована ребрами жесткости, установленными по направлению навивки трубки с хладагентом, при этом поверхность ребер состоит из участков, контактирующих с трубкой и имеющих радиус кривизны, равный наружному радиусу трубки и конических участков, меньший диаметр которых обращен к кипятильнику.Steam-jet vacuum pump containing a sealed casing, a cooling system for the casing in the form of a spiral wound around the casing of the tube with refrigerant, a boiler with a working fluid and steam pipelines with nozzles, characterized in that, in order to reduce the weight of the pump, increase its speed of action, lower the maximum residual pressure , part of the body is formed by stiffeners installed in the direction of winding the tube with the refrigerant, while the surface of the ribs consists of sections in contact with the tube and having a radius of curvature equal to first outer radius of the tube and the conical portions, the smaller diameter of which faces the boiler. Фиг. ΖFIG. Ζ Редактор О.Головач Editor O. Golovach Составитель А.Грошков Техред М.Моргентал Корректор А.Осауленко Compiled by A. Groshkov Tehred M. Morgenthal Corrector A. Osaulenko Заказ 2271 Тираж ПодписноеOrder 2271 Circulation Subscription ВНИИПИ Государственного комитета по изобретениям и открытиям при ГКНТ СССР 113035, Москва, Ж-35, Раушская наб., 4/5VNIIIPI of the State Committee for Inventions and Discoveries under the State Committee for Science and Technology of the USSR 113035, Moscow, Zh-35, Raushskaya nab., 4/5 Производственно-издательский комбинат Патент, г. Ужгород, ул.Гагарина, 101Production and Publishing Combine Patent, Uzhgorod, 101 Gagarin St.