RU1788375C - Valve device - Google Patents

Abstract

Usage: in systems of vacuum-technological equipment. SUMMARY OF THE INVENTION: A locking member mounted coaxially with the inlet of the housing is secured against movement by a locking device. The outlet pipe of the housing is covered by a removable cover. The locking member is made in the form of a sleeve with a jumper with a hole dividing it into two parts. In one of the parts it is installed in the open direction, it is supported by a housing and a jumper, a spring, in the other there is a cork tightly covering the hole. 3 ill.

Description

The invention relates to vacuum technology and may find application in vacuum process equipment systems operating under non-stationary temperature conditions.

The invention can be used for objects that have vacuum insulation and operate under limited access conditions, both for ground use and as part of space stations,

The purpose of the invention is to increase reliability.

In FIG. 1 shows a valve device (general view); figure 2 - valve device for pumping by a vacuum pump in pos. open in terrestrial conditions; in Fig.Z - valve device in pos. open to the surrounding area.

The valve device comprises a housing 1 with an outlet channel 2, hermetically mounted on a cryostat and designed to connect the vacuum insulating cavity 3 to the pumping line (not shown / through the pipe 4 or to the surrounding space through the pipe 5. In the body 1 there is a sleeve 6 spring-loaded 7. A removable locking element in the form of a plug 10 is coaxially mounted in the hole 8 of the seat 9. A pump key 11 is installed and sealed on the housing 1. The pump key has a rod 12 with a drive handwheel 13 for manual of control.

In the open position of the outlet channel 2, the plug 10 is held on the stem 12 by a spring ring 15, and the stem is sealed with gaskets 14. In the housing 1 there is a pyrocheck 16 with an axis 17 and a pyrodrive (not shown), which fixes the compressed spring 7 of the sleeve 6. The pyrochemical axis is located in movable bore holes 23 of the housing and sleeve. The joint of the housing 1 and the sleeve 6 is sealed with a rubber ring 19, and the joint

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The plugs 10 and sleeve 6 are sealed with a corresponding ring 18. On the housing 1 there is a cover 21, which acts as a limiter for the movement of the sleeve 6. There is a plug 22 on the pipe 5.

The valve device operates as follows.

To evacuate the cavity 3 under ground conditions, a pump key 11 is installed on the housing 1. By longitudinally translating the rod 12 is engaged with the plug 10, and by turning the flywheel 13 it is removed from the hole 8 of the jumper 9 and held by the spring ring 15 on the rod 12 when open output channel 2. A pipe 4 is connected to a pumping line (not shown). At the end of pumping, when pressure is reached, for example, 10 atm., Plug 10 is installed in its previous position, in hole 8, tightly closing outlet channel 2, pumping key 11 is removed. To limit the movement of the sleeve 6, a cover 21 is threaded in place of the pump wrench 11 with the flywheel 13. The valve device enters a state of readiness for operation. The plug 22 is removed.

After the cryostat with the valve device exits in operating conditions, the pyrocheck 16 is triggered by the radio signal and

releases spring 7. Under the action of expanding the spring 7, the sleeve 6 moves in the housing 1 until it stops in the cover 21, which is a stop-limiter. In this case, the impact energy is quenched by the shock-absorbing pad 20. The output channel 2 is released for autonomous pumping of the insulating cavity 3 into the surrounding space through the pipe 5.

Claims (1)

As a result, the valve device reliably ensures the operation of the cryostat with the evacuation evacuation system both in terrestrial conditions and during the period of operation in the autonomous mode, thereby expanding the functionality. SUMMARY OF THE INVENTION A valve device comprising a housing with an outlet and coaxial inlet and outlet nozzles and a locking member secured against movement by the locking device coaxially with the inlet nozzle, the outlet nozzle being closed by a removable cover, characterized in that the locking member is made in the form of a sleeve with a spacer it is divided into two parts by a jumper with an opening, in one of which the spring is supported against the body and the jumper in the open side, and in the other is a stopper that hermetically closes the specified opening vie.