SU1096432A1 - Valve - Google Patents

Abstract

A VALVE, comprising a housing with a saddle and separating the inlet and outlet lines, a disk-shaped closure member connected to a pusher and a diaphragm, the body cavity under the diaphragm communicating with the atmosphere through the flow parameter sensor valve and the throttle pulse channel, and flow, characterized in that, in order to extend the functionality by providing stepwise flow control, an annular groove is provided in the saddle on the input side connected to the pulse channel, and in the body cavity above the membrane an additional membrane is placed rigidly connected with the stem of the locking member and installed with the possibility of limited axial movement relative to the main membrane, the cavity above the additional membrane communicating with the atmosphere directly, and the cavity between the membranes communicating with impulse (with a light channel and with the atmosphere with additional channels, in which additional valves of flow parameters sensors are installed. G7 G8 22 Gz VoA. (

Description

Invention otna;:; egs: "g and | -) structure.

Known claddy, soda:; ja11che membrane executive opi-an, separate .crossel g / -; vie; K: i, y by themselves and from the source of channel working medium and switching with sensors of the nozzle-flap type and control flow G1.

A disadvantage of kelaze valves is the presence of three sub-locking devices, which greatly complicates the design and reduces reliability.

Closest to the proposed, is a valve comprising a housing with a seat and separating the inlet and outlet lines of the disc closure member connected to the pusher and the diaphragm, with the housing cavity under the diaphragm: communicated with the atmosphere through the flow sensor valve and with: drss - by pulsed channel, p. the pulse channel is connected to the channel of the control flow 2,

The disadvantage of this; the valve consists in the impossibility of stepped flow control, which reduces its functionality,

The purpose of the invention is to solve the functionality by providing step control. no flow.

The specified target reaches €: mt Teivi. that in the valve containing the body with a saddle and a disassembled inlet, well, well: a main-plate-shaped valve is connected with LUTOKOM with tolcat1; and a membrane, the cavity of the building: / g: under the membrane communicated with r1T1- / yusfeg) via the valve of the flow parameter sensor and with the throttle i-iivmyjifc-cKHiv-i channel, and the pulse cansite with the control flow channel: s., E the saddle on the side of the entrance magistrate is provided with an annular groove associated with a pulse caval, and in the case of the body above the membrane is placed on an additional membrane: t: rc connected with its stop valve org and installed with the possibility of: l :. axial mixing with respect to the main membrane; the cavity of an additional ".mbrac is communicated with the atmosphere immediately ;; but, and the cavity between the membranes is connected with the pulse channel and with the a-i-i-ic ferro additional KaKcjiaivM, for which the additional valves of the flow parameter sensors are installed:

The drawing shows the proposed valve section.

In the valve body 1, there is a plate closure body 2, which expands when interacting with the saddle: 3 inlet 4 and outlet 5. When a flow appears in the outlet line, the valve sensor 21 is activated, which divides the cavity 15c with the atmosphere. As a result, in the cavity 15, the input value of the pressure and the membrane are also set, simultaneously moving upwards, the locking organ is moved to the fully open position, and the flow of the nominal mode is established in the output line. If the valve 21 reopens during operation, depending on the state of the controlled process, the pressure in the cavity 15 will be close to atmospheric, the diaphragm will drop down, and the small operating mode will re-establish between the saddle and the valve. . Thus, continuous switching of the flow from the low to the nominal mode and back during the operation of the object will be realized. If at least one of the protected parameters is disturbed during the operation of the object, the valves of the respective sensors will open, pressure will build up in both cavities 15 and 16, close to atmospheric, and the diaphragms will drop down to full failure, will accept the initial prestart condition, flow including the control, will cease completely. When operating at high pressures, when pressing the pusher 8 is difficult, an overflow button can be used instead, together during the start-up process, the input line with channel 17. The technical and economic efficiency from implementing the invention is to expand the functionality of the valve due to the possibility of stepwise adjustment flow.

Claims (2)

VALVE, comprising a housing with a seat and separating the input and output lines, a disk-shaped locking element connected by a rod with a pusher and a membrane, the body cavity under the membrane being in communication with the atmosphere through the valve of the flow parameter sensor and with a throttle pulse channel, and a pulse S 1 The 2J _ | / jAl channel is in communication with the control flow channel, characterized in that, in order to expand the functionality by providing step-by-step flow control, an annular groove is made in the saddle on the input line side, communicating with the pulse channel, and placed in the body cavity above the membrane an additional membrane rigidly connected to the rod of the locking member and installed with the possibility of limited axial movement relative to the main membrane, and the cavity above the additional membrane and directly with the atmosphere and the cavity between the membranes § communicates with momentum waist channel and additional channels with the atmosphere, in which the valves are installed additional sensors of flow parameters. . SHPP ’ns ABOUT! 'O 9 5 1 4 2 I