SU663939A1 - Ultrahigh vacuum valve - Google Patents

Ultrahigh vacuum valve

Info

Publication number
SU663939A1
SU663939A1 SU782566124A SU2566124A SU663939A1 SU 663939 A1 SU663939 A1 SU 663939A1 SU 782566124 A SU782566124 A SU 782566124A SU 2566124 A SU2566124 A SU 2566124A SU 663939 A1 SU663939 A1 SU 663939A1
Authority
SU
USSR - Soviet Union
Prior art keywords
valve
vacuum valve
ultrahigh vacuum
nut
screw pair
Prior art date
Application number
SU782566124A
Other languages
Russian (ru)
Inventor
Георгий Георгиевич Писаренко
Original Assignee
Предприятие П/Я Р-6789
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я Р-6789 filed Critical Предприятие П/Я Р-6789
Priority to SU782566124A priority Critical patent/SU663939A1/en
Application granted granted Critical
Publication of SU663939A1 publication Critical patent/SU663939A1/en

Links

Landscapes

  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Description

(54) СВЕРХВЫСОКОВАКУУМНЫЙ ВЕНТИЛЬ(54) SUPER-HIGH VACUUM VENT

Изобретение относитс  к вакуумной технике, а именно к вакуумной запорной арматуре, Известен сверхвысоковакуумный вентиль содержащий клапан со штоком, резьбова  часть которого с гайкой, закрепленной на корпусе, образует винтовую пару. Шток приводитс  во вращение через муфту ог раничени  крут щего момента электромеханическим приАодом; Величина давлени  между клапаном и седлом корпуса с  в резьбе винтовой пары ij. , Недостатком этого вентил   вл етс  отсутствие посто нства давлени , обусловленное изменением сил трени  в винтовой паре.. Наиболее близок к предлагаемому изо& ретению сверхвакуумный вентиль, в корпу се которого расположены запорный орган со штоком, образующим винтовую пару с гайкой механизма привода, и узел создани  усили  уплотнени , выполненный в виде набора предварительно сжатьк тарельгчатых пружин, деформаци  которых при уплотнении создает усилие прижати  запорного органа к седлу 2. В этом вентиле постеп енный износ кромок тарельчатых пружин и уменьшение их начальной жесткости приводит к уменьшению допустимой величины изменени  заданного уплотнени , что снижает надела ность вентил  в работе. Белью изобретени   вл етс  увеличение срока службы и повышение надежности вентил  в работе путем обеспечени  посто нства усили  уплотн1эни  на клапане. Дл  этого узел создани  усили  уплотнени  выполнен механогйдравлическим с рабочей средой, например, из гидропласта, а на гайке механизма привода установлены резьбова  втулка, -кинематически св з анна  с Гидропластом, и муфта предельного момента, срабатывающа  при закрытии запорного органа. Внутренн   поверхность втулки св зана с наружной поверхностью гайки шлицевым соединением, а наружна  с механизмом привода..The invention relates to vacuum technology, namely to vacuum valves. An ultrahigh vacuum valve is known, comprising a valve with a stem, the threaded part of which with a nut fixed to the housing forms a screw pair. The rod is rotated through the torque limiter clutch by electromechanical operation; The amount of pressure between the valve and the body seat with the threaded screw pair ij. The disadvantage of this valve is the lack of constant pressure due to the change in friction forces in the screw pair. It is closest to the proposed image. The retracted suction vacuum valve, in which the valve body with a stem is formed, forms a screw pair with a nut of the drive mechanism, and a compaction force assembly, made in the form of a set of precompression traction springs, whose deformation during compaction creates a force to press the valve body against the seat 2. In this valve, gradual wear of the edges of the cup springs and a decrease in their initial stiffness leads to a decrease in the allowable amount of change in the specified seal, which reduces the availability of the valve. work. The object of the invention is an increase in the service life and an increase in the reliability of the valve in operation by providing constant sealing forces on the valve. For this purpose, the compaction unit is made mechanohydraulic with a working medium, for example, of a hydraulic plastic, and on the nut of the drive mechanism there is a threaded bushing, a pneumatic connection with the hydraulic membrane, and a torque limiting clutch that is activated when the valve is closed. The inner surface of the hub is connected to the outer surface of the nut by a splined joint, and outer to the drive mechanism.

SU782566124A 1978-01-05 1978-01-05 Ultrahigh vacuum valve SU663939A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU782566124A SU663939A1 (en) 1978-01-05 1978-01-05 Ultrahigh vacuum valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU782566124A SU663939A1 (en) 1978-01-05 1978-01-05 Ultrahigh vacuum valve

Publications (1)

Publication Number Publication Date
SU663939A1 true SU663939A1 (en) 1979-05-25

Family

ID=20742971

Family Applications (1)

Application Number Title Priority Date Filing Date
SU782566124A SU663939A1 (en) 1978-01-05 1978-01-05 Ultrahigh vacuum valve

Country Status (1)

Country Link
SU (1) SU663939A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723102A (en) * 1985-11-04 1988-02-02 Vdo Adolf Schindling Ag Electric setting drive for an automotive vehicle speed control or regulating system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723102A (en) * 1985-11-04 1988-02-02 Vdo Adolf Schindling Ag Electric setting drive for an automotive vehicle speed control or regulating system

Similar Documents

Publication Publication Date Title
US4824180A (en) Brake corrector subject to the load of a vehicle
US4496033A (en) Dual piston actuator
US4867286A (en) Shock absorber having fluid amplified piston head with relief valve which provides second stage of fluid amplification
US3684330A (en) Hydraulic brake pressure control valve assembly
EP0728087B1 (en) Hydraulic master cylinder
JPH0314664B2 (en)
SU663939A1 (en) Ultrahigh vacuum valve
US5794506A (en) Reaction mechanism for brake booster
JPS5837721Y2 (en) hydraulic booster
JP2004115006A (en) Vacuum servo brake for booster brake system for vehicle with prime motor
GB2126284A (en) Radial piston pump
US2424331A (en) Brake valve
US4114743A (en) Fluid actuated operator and clutch linkage
EP0078878A2 (en) Power-assisted rack-and-pinion steering mechanism
JP3393254B2 (en) Brake booster device with fluid reaction force and adjustable kick
US3977192A (en) Hydraulic drive pulsator of reciprocating action
US3744507A (en) Switchover valve for pneumatic installations
JP2000345954A (en) Radial piston pump
US3977193A (en) Hydraulic braking force multiplying device
JP3385069B2 (en) Hydraulic actuator
JPH0319916B2 (en)
US5904088A (en) Brake booster apparatus for a vehicle
JPS60219163A (en) Rack-power steering gear
US3220190A (en) Valve means
GB2037917A (en) Master Cylinder for a Hydraulic Brake System