SU1029150A2 - Gas pressure regulator - Google Patents

Abstract

GAS PRESSURE REGULATOR, BY auth.St. No. 915062, of which it is so that, in order to expand the functional capabilities of the regulator, it contains an additional inlet duct in the housing and an additional valve connected with an additional pusher c. an additional piston-type sensitive element, the over-piston cavity of which is in communication with the cavity formed by the pistons of the sensing element, and the piston-cavity with the cavity of the additional output channel.

Description

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The invention relates to pneumatic automation and can be used in various industries and vehicles for automatically lowering the gas pressure and stabilizing the reduced pressure in the face of changes in the input pressure and flow.

According to the main auth. No. 915062 is known a gas pressure regulator, comprising a housing with inlet and outlet channels, with a spring-loaded valve connected to the pusher, with a sensitive element made in the form of two pistons of large and smaller diameters, the cavity between which is divided by a partition with a throttling hole, filled with fluid, and the driver The regulator also contains a rod connected to a piston of smaller diameter and installed with a gap in a blind hole made in a piston of a larger diameter and in a throttling hole, with a smaller diameter piston is associated with a pusher, and a larger diameter piston is connected with a driver.

However, the known regulator provides - only the regulation of gas pressure in one control object, the regulation of one parameter of one gaseous medium, which indicates its limited functionality.

The aim of the invention is to enhance the functionality of the gas pressure regulator.

This goal is achieved by the fact that the gas pressure regulator contains an additional inlet channel made in the housing and. an additional valve connected by an additional force with an additional HbiiM sensing element of the piston type, the over-piston cavity of which communicates with the cavity formed by the pistons of the sensing element and the sub-piston cavity with the cavity of the additional output channel.

With this design of the regulator, one setpoint mechanism allows the pressure of gas from two independent sources to be lowered and directed to two independent consumers.

The drawing shows a gas pressure regulator, a slit.

The gas pressure regulator contains a housing 1 with an inlet 2 and an outlet 3 channels and a saddle 4. The valve 5 with a spring 6 and pushers 7 and a sensitive element made in two portions of a larger diameter 8 and a smaller diameter 9 are placed in the housing. A piston of a larger diameter 8 associated with a driver consisting of screw 10., plate 11 and spring of task 12. Case is closed by cup 13. In the cavity between pistons 8 and 9 filled with liquid 14, a partition 15 is installed with a throttling hole 16 and passing through it rod 17, installed in a deaf otve Item 18, made in the larger diameter piston 8.

The regulator is equipped with an additional control circuit consisting of a housing 19 with a saddle 20, an additional inlet 21 and an outlet 22 channels, an additional valve 23 with a spring 24 and an additional pusher 25 in contact with the additional piston-type sensitive element 26, with a piston cavity 27 filled with liquid and communicating with channel 28 with a float between pistons 8 and 9.

The regulator works as follows.

In the initial state, the cavity between the pistons 8 and 9 and the cavity 27 is filled with fluid 14, the spring of task 12 is compressed by screw 10 through the plate 11. piston 8 by spring 12 is maximally lowered down, fluid 14 is under pressure, under the action of which piston 9 and element 26 They are maximally lowered down and located near the enclosures restraints. The valves 5 and 23 with the piston 9 and the element 26 through the pushers 7 and 25 are maximally lifted over the seats 4 and 20 and form the maximum passage section with the latter.

High pressure gas from two independent sources is fed through inlet channels 2 and 21 to valves 5 and 23, respectively, in the gaps between valves 5 and 23 and their seats 4 and 20 the gas is throttled and its pressure decreases. The reduced gas pressure enters the piston 9 and the element 26 and in the cavity of the output channels 3 and 22, respectively. The pressure at the regulator's outputs increases, and the force of its effect on porn 9 and 26 also increases. The piston 9 and the element 26 rise up, while the pressure of the fluid 14 above the pistons rises and is transmitted to the piston 8. The latter also rises up, compressing the spring of task 12.

As the pressure increases under the piston 9 and the element 26, they rise upward, at the same time, the valves 5 and 23 under the action of the springs 6 and 24 also rise up, reducing the flow area between the valves and their seats 4 and 20. If the outlets from the regulator are closed, then at a certain pressure at the outlets, called static pressure, valves 5 and 23 overlap

channels of saddles 4 and 20, separating the input and output cavities of the regulator.

When gas is taken into the control objects (by consumers), the output pressure and the force of their effect on the piston 9 and the element 26 (and hence on the piston 8) decreases. This causes the piston 9 and the element 26 to be lowered down, the pressure of the liquid 14 decreases, and the piston 8 is lowered down (under the action of Spring 12). As a result, the valves 5 and 23 open, causing gas to be throttled between the valves and their seats . The pressure in the output channels 3 and 22 rises again and at some value between the forces acting on the moving system of the controller, a dynamic equilibrium is established corresponding to a certain gas flow rate. If the gas flow rate changes, then a new equilibrium occurs at a different value of the throttling gap.

In the controller, it is possible to simultaneously reduce the pressure of gas from two independent sources and issue them to two different consumers. Moreover, the driver. one regulator mechanism. The regulator can reduce and issue a gas both to one consumer and two consumers. In the first case, the regulator has only one control loop, the second circuit does not participate in the work, and the piston of smaller diameter is idle. the circuit is at rest, high pressure gas is not supplied to its inlet;

The regulator can reduce the pressure of the gas coming from one source: and deliver it to one of two different consumers. Particularly effective is the use of the regulator when the pressure of different gases is reduced to the same pressure and output to different consumers. provides high accuracy of maintaining the same pressure in different control objects, which is very difficult to provide with different regulators because of the impossibility of the same adjustment and manufacturing errors and assembly. All this indicates a significant expansion of the functionality of the controller, the expansion of its area. possible use.

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A positive effect is provided by the regulator and with a simultaneous decrease in the pressure of different gases, which form a meridine, is an explosive mixture.

0 or chemically incompatible friend. with a friend. The fluid 14 between the piston 9 and the element 26 is a reliable separator of controlled media.

Claims (1)

GAS PRESSURE REGULATOR, ed. No. 915062, with the exception that, in order to expand the functional capabilities of the regulator, it contains an additional inlet channel made in the housing and an additional valve connected by an additional pusher with an additional piston-type sensitive element, over-piston the cavity of which is in communication with the cavity formed by the pistons of the sensing element, and the piston cavity with the cavity of the additional output channel.