RU1798577C - Glandless valve - Google Patents

Abstract

Usage: in the subsector of industrial pipeline valves, in particular in shut-off glandless valves with: auxiliary control, designed to operate as an actuator in automation systems in pipelines. Summary of the invention.:. a transparent cylinder is installed between the housing and the lid, which communicates with a channel with: an inlet pipe of the valve and an additional channel made in a cup with a cavity above the sensing element. A pointer piston is installed inside the transparent cylinder, elastically pressed from the side of the cover, and a stand is attached to the housing. photodiodes and light bulbs. 1 s.p., f-ly, 2 silt,. ::. ;: V,,, .-.

Description

., - The invention relates to the subindustry of the Roma population. predominantly pipe fittings; shut-off (non-gland;; solenoid valves with; auxiliary control designed to operate as an actuator in piping automation systems ..:;: The aim of the invention is the convenience and the safety of operation of the valve, as well as the possibility of remote control (signal transmission The valve is open and the valve is closed neither the control panel;: -.- ;. In Fig. 1, the valve is shown in plane: sectional view; Fig. 2 shows a transparent cylinder with closed control of the locking device v:

 The valve comprises a housing 1 with an inlet 2 and an outlet 3 channels and a seat A of the main passage, on which the locking device 5 is located in the form of a membrane unit including a membrane 6 and a loading hole 7, the cover 8c is fixed

on it an electromagnetic drive 9, the core of which is connected with the control gate 10; placed on the discharge Hole 11, Between the cover 8 and the valve body 1, a transparent cylinder 12 is mounted on the inlet channel 2 side, in which a movable pointer 13 is placed dividing the cavity of the cylinder 12 into two containers: a cavity above the pointer 13 and a cavity. 15 under the pointer 13. The cavity 14 above the pointer 13 is connected by a channel 1 of the upper membrane cavity 17 located between the housing 1 and the locking device 5. The cavity 15 below the pointer 13 is connected by a channel 18. to the input channel 2. The movable pointer 13 from the lid side 8 is spring-loaded 19, the force of which is equal to the total force that counteracts the opening of the locking device 5. In addition, a rack 20 is mounted on the valve body 1 with photodiodes 21 and electric lamps 22 mounted opposite to each other relative to the cylinder 12.

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The position of the locking device is monitored as follows.

When the electromagnetic actuator 9 is de-energized, the control shutter 10, connected with the core of the electromagnetic actuator, closes the discharge opening 11, since the effective area above the locking device 5 and the membrane b is larger than the area under the membrane b, and the pressure in the supmembrane cavity 17 and the submembrane cavity of the input channel 2 is equal, then the locking device 5 under the action of the difference of forces acting on it, overlaps the saddle 4 of the main passage.

The valve is closed.

Moreover, the channels 16 and 18 provide equal pressures in the cavity 14 above the pointer 13 and in the cavity 15 under the pointer 13 of the transparent cylinder 12, but under the action of the spring 19 the movable pointer 13 is in the lower extreme position, namely, at the mark on the cylinder, the valve

closed, V; ; .. -: ..-- - ..-...

When the electromagnetic actuator 9 is turned on, the control shutter 10, connected with the core of the actuator 9, opens the discharge opening 11. Since the diameter of the discharge opening 11 is larger than the diameter of the loading hole 7, the filling of the supra-membrane cavity 17 is much slower than the discharge of medium from riee, into as a result of which the pressure in it drops, and under the action of the pressure difference in the supmembrane cavity 17 and the submembrane cavity of the inlet channel 2, the locking device 5 opens a passage in the saddle 4 of the housing 1.

The valve is open.

In this case, the pressure from the cavity 14 above the pointer 13 is released through the channel 16, and the pressure supplied through the channel 18 from the inlet channel 2 to the cavity 15 under the pointer 13 remains unchanged. Due to the pressure difference, the pointer 13, compressing the spring 19, moves up to the mark printed on the cylinder, the valve is open.

After turning off the electromagnetic actuator 9, the pressure in the cavities 14, 15 above and

the pointer 13 is equalized and the pointer 13 again takes a position at the mark The valve is closed. .

If visual inspection is not possible, the photodiodes 21, installed at the level of the corresponding marks of the cylinder 12, and the electric lamps 22 are activated in the automation circuit and a signal is remotely transmitted to the control panel. The valve is open.

or The valve is closed using light bulbs 22.

The use of the proposed alarm in sealless valves with a sealing separation tube

allows to increase the safety of operation of the installation as a whole, to simplify the taxation of systems, to carry out continuous monitoring of operation / valves, to reduce the accident rate,

Claims (2)

1. A sealless valve comprising a housing with inlet and outlet nozzles, a locking device in the form of a membrane unit and a cover with an electromagnetic drive fixed to it, characterized in that, for the purpose of convenience and safety of operation, it is equipped with a transparent a cylinder, which is fixed between the cover and the valve body on the inlet side, a movable pointer is installed in the cylinder, spring-loaded from the cover, in which a channel is made that communicates the supramembrane cavity of the valve with a cavity above the pointer, and a channel is made in the body that communicates the inlet channel with the cavity above the pointer, with marks on the cylinder surface corresponding to the open and closed state of the valve. 2. The valve according to claim 1, with the exception that, for the purpose of transmitting the signal remotely, the valve is open and the valve is closed, it is equipped with photodiodes and electric lamps mounted opposite to the cylinder at the corresponding marks on the cylinder and secured by a stand on the valve body.