SU1300019A1 - Method for producing isoprene - Google Patents

Abstract

The invention relates to automation, in particular to pressure regulators. The circuit of the invention is an increase in the efficiency of the regulator. The regulator includes a housing 1 with an inlet 2 and an outlet 3 channels, a saddle 4, a valve 5 connected by a pusher 6 with a sensitive element - a piston 7. A stepped piston 20 is installed in the housing, at the end of which there is a shut-off member 21 of the inlet channel 2, The cavity between the stages is connected to the atmosphere, and the cavity between the end surface of the larger stage and the housing is connected by the first channel 27 to the throttle 28 and shut-off devices 29 to the atmosphere, and the second channel 25 to the check valve 30 to the sensing element's relief channel. 1 il. 10 S (Lp and if 16

Description

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11300019

The invention relates to automation and to, in particular, to pressure regulators.

The purpose of the invention is to increase the efficiency of the regulator.

The drawing shows a pressure regulator,

The regulator includes a housing 1 with an inlet 2 and an outlet 3 channels and a saddle 4, the valve 5 of which is connected by a pusher 6 with a sensitive element - a piston 7 loaded with a spring of task 8, pressed by a screw 9 through a plate 10, the valve 5 is pressed to the piston 7 by a spring 1 The housing is closed by a cup 12. In the piston 7 there is a discharge channel 13, the saddle 14 of which is blocked by the relief valve 15, the discharge channel 13 has an axial part and radial channels 16 extending into the annular groove 17 between the sealing cuffs 18 and 19 of the piston 7.

In the housing 1 there is a step-like cavity in which a two-stage piston 20 is installed, the front surface 21 of a lesser step of which is the locking member of the seat 22, made in the inlet channel 15

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25

and the gas from the outlet cavity through the channels 13 and 16 enters the cavity of the annular groove 17, from where it passes through the check valve 30 through channel 25 to the cavity 23, since the area of the end face 24 of the piston 20 is larger than the end face 21 the piston moves to the right and the locking member 21 sits on the saddle 22, shutting off the gas supply, which prevents further pressure build-up and an unjustified release into the atmosphere. The locking member 29 is closed.

Upon elimination of the cause of the increase in the output pressure, the locking member 29 is opened. At the same time, the gas from the cavity 23 through the throttle device 28 and the locking device 29 through the channel 27 is vented to the atmosphere. The pressure in channel 2 of the two-stage piston 20 is pressed from the seat 22 and high-pressure gas flows to valve 5. The presence of throttles 28 causes a slow drainage of gas from the cavity 23 and a smooth opening of the closure member 21. This leads to a smooth supply of gas to the valve 5. After switching on the regulator in the work of the steam organ 29 is closed.

In case of leakage, the valve 2, Cavity 23, is formed;

A cathode 1 and an end face 24 of a larger piston stage 20 are connected by a channel 25 with a cavity-ring groove 17. The cavity 26 between the stages of the piston 20 is in communication with the atmosphere. The cavity 23 is connected with the atmosphere by the channel 27 with installed throttle 28 and locking 29 devices. In the channel 25 is installed by the entrance to the bore 17 check valve 30.

The pressure regulator operates as follows.

High pressure gas is supplied to the inlet channel 2 and, pressing the two-stage piston 20g, passes through the open valve 5 into the cavity under the piston 7, which under the influence of increasing pressure rises, compressing the spring of task 8. When the output pressure reaches the output cavity, the valve with 5 seconds per saddle 4 and separate the input and output cavities,

EC.PI pressure in the output cavity and farther, then the piston 7 rises further and thus the saddle 14 separates from the valve 15

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and the gas from the outlet cavity through the channels 13 and 16 enters the cavity of the annular groove 17, from where through the check valve 30 through channel 25 enters the cavity 23, Since the area: the end face 24 of the piston 20 is larger than the end face 21, the piston moves to the right and the locking member 21 sits On the saddle 22, by shutting off the gas, which prevents further pressure and an unjustified release into the atmosphere, the locking member 29 is closed.

With the elimination of the cause of the increase in the output pressure, the locking member 29 is opened. At the same time, the gas from the cavity 23 through the throttle device 28 and the locking device 29 through the channel 27 is released into the atmosphere. The pressure in channel 2 of the two-stage piston 20 is pressed from the seat 22 and high-pressure gas flows to valve 5. The presence of throttles 28 causes a slow drainage of gas from the cavity 23 and a smooth opening of the closure member 21. This leads to a smooth supply of gas to the valve 5. torus in the work of the steam organ 29 is closed.

At violation of tightness of cla0

in the cavity 23, the two-stage piston 20 is moved to the right and the locking member 21 is closed. This is a malfunction signal, after 5 elimination of which by opening and following closing of the locking member 29, gas is supplied to the inlet again. If possible, short-term

In case of an accidental increase in the adjusting pressure, it is advisable to keep the stop valve 29 open. The two-stage piston 20 will briefly close the channel 2. As the gas leaves the cavity through the throttle 28 and the locking member 29 through the channel 27 and the working pressure in the output channel 3 returns, the two-stage piston 20 moves to the left, opening the seat 22 and ensuring further operation . In this case, the constant etching of gas from channel 27 will indicate the presence of systematic leaks and the need to eliminate faults. For large non-hermeticity, the gas will not have time to leave the cavity 23 through the throttle 28 and the piston 20 will move to the right, PR5

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313,000

shutting down the inlet channel, which (together with the gas outlet from the channel. 27) will indicate an emergency condition of the controller and the need to take urgent measures to eliminate it. In this case, shut off valve 29 must be closed (this will stop the supply of high pressure gas to regulator input). Relieve pressure from the regulator's output cavity and eliminate the malfunction. Thereafter, the controller is activated by opening the valve 25.

The controller is economical, it excludes the unjustifiable) 1st discharge of the working environment.

Claims (1)

Invention Formula The pressure regulator, comprising a housing, between the inlet and outlet channels of which a valve associated with the pusher is located, is at the end the composer N. Gondaksazova Editor V. Kovtun Tehred A. Kravchuk Proofreader O. Lugova Order 1I18 / 25 Circulation 864 Subscription VNIIPI USSR State Committee for inventions and discoveries P3035, Moscow, Zh-35, Raushsk nab., 4/5 Pronzvodg.tveino-printing company, Uzhgorod, st. Project, 4 tO f5 0 five 94 Secondly, a relief valve is installed, the seat of which is made on a piston spring-loaded sensitive element and connected to a discharge channel, characterized in that, in order to increase the efficiency of the regulator, a step cavity is made in the body, in which a two-stage piston is placed, on the end surface of which a lower level is made the shut-off element of the saddle installed in the inlet channel, the cavity between the steps of the two-stage arsn is connected to the atmosphere, and the cavity formed by the body and the end surface b The larger stage of the two-stage piston communicates with the first channel, in which the throttle and locking device is placed, with the atmosphere, and the second channel - with the reset channel of the sensing element through a non-return valve installed by the inlet to the reset channel.