SU1506438A1 - Pressure regulator - Google Patents

Abstract

The invention relates to indirect control pressure regulators designed to maintain the gas pressure at a constant level in accordance with the control pressure, and can be used in various pneumatic, including automated, systems, such as position pneumatic drives, following pneumatic systems, and so on. .d The aim of the invention is to expand the scope of application of the regulator. The pressure regulator comprises a housing 1 with an inlet 2 and an outlet 3 channels, a regulator 4, connected by a pusher 11 with a membrane 6 with a rigid center 7, which is a valve of a waste valve. In the pusher, a boring 16 is made, divided into a waste cavity 20 and an additional cavity 21 with an additional sensitive element 18, which can be made in the form of a piston, a membrane or a bellows. The membrane 6 forms with the body an overmembrane control cavity 8 and a submembrane cavity 9 connected by a channel 10 with an output cavity 5 connected to a cavity 21 by channels 14 and 15 in the push rod 12. A through passage section of the channels 10, 14, 15, a discharge channel 26, a waste valve, the end windows 17 in the pusher 12 is made not less than the flow area of the output channel 3. 4 Cp. f-ly, 3 ill.

Description

15

22

13

(L

ate

about

WITH

00

The center 7, which is the flap of the hyphen valve. In the pusher, a boring 16 is made, divided into a waste cavity 20 and an additional cavity 21 with an additional sensitive element 18, which can be made in the form of a piston, a membrane or an instrument. The membrane 6 forms a supramembrane cavity 8 with the body.

control and submembrane cavity 9 connected by a channel / 10 to an output cavity 5 connected to a cavity 21 by channels 14 and 15 in a pusher 12, passage section of channels 10, 14, 15, a discharge channel 26, a waste valve, face windows 17 in a pusher 12 not less than the flow area of the output channel 3. 4 CW. f-ly, 3 ill.

The invention relates to indirect control pressure regulators designed to maintain gas pressure at a constant level in accordance with the control pressure, and can be used in various pneumatic, including automated, systems, for example, positional pneumatic actuators, in following pneumatic systems and etc.

The aim of the invention is to expand the scope of application of the regulator.

Fig. 1 shows a pressure regulator, a section; figure 2 is an additional sensitive element in the form of a membrane; fig.Z - the same, in the form of a bellows.

The pressure regulator contains casing 1 with input 2 and upper 3 channels, input 4 and output cavity 5. The sensing element is designed as a membrane 6 fixed between two disks of the hard center 7. The membrane 6 forms with the housing 1 a supermembrane control cavity 8 and a submembrane cavity 9 connected through channel 10 in the housing 1 with an output cavity 5. The pressure regulator contains the regulator 11 connected by the pusher 12 to the rigid center 7 of the sensing element.

In the closed position, the regulator 11 is closed due to the force of the spring 13 and the pressure drop of the compressed

gas o

In the pusher 12, the radial 14 and axial 15 channels and the boring 16 with end windows 17 are sealed, hermetically divided by an additional sensitive element 18 connected with the rod 19 to the waste 20 and an additional 21 cavity.

The pressure regulator also contains a relief valve, seat 22

0

five

0

five

ABOUT

five

0

five

performed on the end face of the pusher 12, and the flap 23 - on the hard center 7 meJ-l 6.

The additional cavity 21 communicates with the output cavity 4 by means of a through axial 15 and a radial 14 channels, filled in the push rod 12.

Through these channels, an additional cavity 21 and an entrance cavity 4 are connected by an intermediate cavity 24 between the housing and the regulator 11. In the walls of the pusher 12 above the additional sensing element 18, beyond the extreme upper position of the latter, end windows 17 are made. These windows are constantly communicated through boring 25 in the housing 1 with a discharge channel 26.

The flow area of the channel 10 in the housing 1, the flow area of the channels 14 and 15 in the pusher 12, as well as the total flow area of the end windows 17 and the relief channel 26 are not less than the flow area of the output channel 3.

iJlTOK 19 can be rigidly connected to the rigid center 7 of the membrane 6.

Additional sensitive element 18 may also be made in the form of a membrane (Fig.2) or a bellows (Fig.Z).

The pressure regulator operates as follows.

When pressure is applied to the supramembrane cavity 8, the deflection of the membrane 6 causes the pusher 12 to move relative to the housing 1 together with the regulator 11 down (according to the drawing), the latter opens, and through the annular gap compresses the gas from the input cavity 4 enters the output cavity 5. Outlet pressure, acting n.h membrane 6

From below, it is balanced by the force of the control applied to the cavity 8.

When the outlet pressure reaches the control pressure value, the regulator 11 closes, providing necessary pressure at the outlet of the device.

If the pressure in the output cavity 5 decreases, i.e. becomes lower than a predetermined value (for example, with an increase in flow rate or internal leakage through the relief valve), the balance is disturbed, the membrane 6 bends towards the submembrane cavity 9 and opens the regulator 11 through the pusher 12 increasing the area of the passage section of the gas passage channel and, consequently, the pressure to the previously specified value.

When the pressure on the device increases (for example, when the flow rate decreases) and simultaneously in the submembrane cavity 9, the membrane 6 bends towards the supermembrane cavity 8, the regulator 11 is displaced towards the membrane 6 by the action of spring 13, this movement causes the regulator H to close. reducing gas flow and ultimately to restoring the original pressure.

Since the pressure from the exit web 5 constantly acts on the surface of the membrane 6 from the side of the sub-membrane cavity 9, and on the additional sensitive element 18 (piston) on the side of the additional cavity 21, constantly communicating the axial channel 15 and the radial channel 14 the output cavity 5, the rod 19 may not be connected rigidly with a rigid center 7. It is enough to fix the rod 19 relative to the rigid center 7 from the sides of the displacement relative to the axis of the sensing element so that the piston does not tilt relative to the bore 1 6

Claims (5)

Claims 1. A pressure regulator comprising a housing with inlet and outlet channel, with inlet and outlet cavities between which a heater is installed. five 0 five 0 five 0 five 0 cheering the organ forming an intermediate cavity with the body connected to the output cavity through the axial and radial channels in the pusher connecting the special organ with the sensing element made 8 as a membrane with a rigid center forming the supermembrane control cavity and the submembrane cavity connected to the output cavity an additional channel in the housing, a relief valve installed between the submembrane cavity and the scrap channel, characterized in that, in order to expand the scope of application of the regulator, P is pushed On the side of the membrane of the vent-1nen bore, the waste valve seat is made on the end of the pusher, the valve of the discharge valve is made on the rigid center of the diaphragm, and an additional sensitive element separating the cavity is installed in the bore of the pusher. bore holes to the discharge cavity connected to the pre-assembled cavity through the discharge valve, and add the additional cavity connected to the intermediate cavity about through the axial channel of the pusher, and the discharge cavity is connected to the reset channel Erez Mechanical window lifters and the bore the housing, the passage sectional area and axial pusher ra.- dially channels, the supplemental channel, the relief valve, the windows of mechanical pusher and the discharge channel vypoliepy least square flow outlet section. 2. The regulator according to claim 1, about tl and - due to the fact that the stem is rigidly connected to the rigid center of the membrane ;; m. 3. The regulator according to claims 1 and 2, characterized in that the additional sensitive element is designed as a piston. A. Regulator according to PP.1 and 2, about tl and - due to the fact that the additional sensing element is w. filled with membranes. 5. A regulator according to claims 1 and 2, characterized in that the additional sensitive element is suspended in the form of a bellows. m : ijn nlFi " FIG. Editor V. Petrash Compiled by I. Muzychenko Tehred. A. Kravchuk Order 5A38 / 50 Circulation 788 VNIIPY State Committee on Inventions and Discoveries at the State Committee for Science and Technology of the USSR 4/5, 113535, Moscow, K-35, Raushsk nab. 2f Proofreader I. Muska Subscription