RU205637U1 - GAS PRESSURE REGULATOR - Google Patents

Abstract

The utility model refers to gas pressure control devices (hereinafter referred to as a reducer) and is designed to reduce the pressure of oxygen, air, its separation products and other non-aggressive gases coming from the pipeline, and automatically maintain a given operating pressure constant. The gas pressure regulator consists of a body connected to the inlet and outlet fittings, a cover with a pressure screw and a spring, which is screwed to the body through a diaphragm with a pressure disk fixed to the diaphragm, a saddle and a plug with a pressure reducing valve with a spring are fastened in the central channel of the body with a nut, characterized in that the reducing valve is made up of a valve body screwed together, a pusher with a channel formed by holes in the pusher of the reducing valve connecting the cavity formed by the valve surfaces, and the hole in which it moves in the working pressure chamber, a union nut and a seal. EFFECT: increased accuracy of maintaining the set value of the outlet pressure in the working range of the gas flow rate. 3 C.p. f-ly, 1 dwg.

Description

Technology area

The utility model refers to gas pressure control devices (hereinafter referred to as a reducer) and is designed to reduce the pressure of oxygen, air, its separation products and other non-aggressive gases coming from the pipeline and automatically maintain a given operating pressure constant.

State of the art

From the prior art, source of information RU 2487292 C2, 10.07.2013, a gas reducer is known, adapted to be fixed to a cylinder, and the gas reducer comprises: a housing forming a front section and opposite side sections; a plurality of gas pressure indicators installed on the front portion of the housing; a cap attached to the outer portion of the body; a pressure adjustment knob installed on one of the side portions of the housing near the cap and located horizontally relative to the longitudinal axis of the compressed gas cylinder; and an energy absorbing device associated with the pressure control knob and the cap, the energy absorbing device being adapted to absorb energy from shock loads applied to the pressure control knob.

The disadvantage of this gas reducer is the low accuracy of maintaining the set value of the output pressure in the operating range of the gas flow rate. Low maintainability and, as a result, reliability.

From the prior art, source of information RU 2619146 C2, 05/12/2017, a gas reducer is known, containing a housing with an inlet for high-pressure gas supply, in which a sleeve with a shut-off seat is hermetically installed, inside which there is a movable valve, pressed against the seat of the sleeve by a shut-off spring, the tightness of the closing of which is provided by a plastic insert rolled into the valve body, a cover, a sensitive element that senses the difference between the pressure at the output of the reducer and atmospheric or pressure, relative to which the output pressure of the reducer is maintained, an adjusting spring, a cover and a compression nut, while installed in the cover of the reducer The sensing element consists of a metal corrugated bellows with a hermetically installed plug and a shroud sleeve with a rubber seal, while the adjusting spring is located inside the bellows and rests on one end on the plug of the bellows sensing element, and the other end on pressure nut.

The disadvantage of this gas reducer is the low accuracy of maintaining the set value of the output pressure in the operating range of the gas flow rate, the complexity of the design, low reliability and maintainability.

Disclosure of the essence of the utility model

The problem to be solved by the claimed utility model is to create a gas pressure regulator with eliminated disadvantages of the prior art.

The technical result achieved by the claimed utility model (gas pressure regulator) consists in increasing the accuracy of maintaining a given value of the outlet pressure in the operating range of the gas flow rate.

The essence of the technical solution of the claimed utility model lies in the fact that the gas pressure regulator consists of a body connected to the inlet and outlet fittings, a cover with a pressure screw and a spring, which is screwed to the body through a membrane with a pressure disk attached to the membrane in the central channel of the body a nut secured a saddle and a plug with a reducing valve with a spring, while the reducing valve is made up of a valve body screwed together, a pusher with a channel formed by holes in the pusher of the reducing valve connecting the cavity formed by the surfaces of the valve and the hole in which it moves in the chamber working pressure, union nut and seal.

In this case, the inlet and outlet fittings are glued to the body.

In this case, the inlet and outlet fittings are connected to the body by screwing.

In this case, a filter is installed in the inlet connection.

The inventive design of the gas pressure regulator provides an increase in the accuracy of maintaining a given value of the outlet pressure in the operating range of the gas flow rate due to the execution of the channel, which is formed by the holes in the pusher of the reducing valve connecting the cavity formed by the surfaces of the valve and the hole in which it moves with the working pressure chamber, balancing valve relative to the outlet pressure, thereby increasing the accuracy of maintaining the set value of the outlet pressure in the operating range of the gas flow rate.

The presence of a pressure disk fixed on the membrane, which moves the reducing valve and the stop in the regulator body, protects the membrane from abnormal deformation, which makes it possible to increase the resource and additionally contributes to the stable operation of the regulator.

Brief Description of Drawings

The essence of the proposed utility model is illustrated by the following description and the attached illustrations, which show:

FIG. 1 - the design of the gas pressure reducer.

1 - pressure screw;

2 - cover;

3 - spring;

4 - pressure disk;

5 - membrane;

6 - case;

7 - fitting;

8 - union nut;

9 - rubber ring;

10 - nipple;

11 - filter;

12 - rubber ring;

13 - saddle;

14 - reducing valve;

15 - rubber ring;

16 - plug;

17 - spring;

18 - pusher;

19 - channel;

20 - union nut;

21 - sealant.

Implementation of the utility model

The gearbox is a one-stage reduction system.

The reducer consists of a housing (6) connected at the inlet and outlet by fittings (7). A saddle (13) and a plug (16) with a reducing valve (14) with a spring (17) are fixed in the central channel of the body with a nut.

The cover (2) with the pressure screw (1) and the spring (3) is screwed to the body through the diaphragm (5).

The reducer is designed in a reverse acting system (high inlet pressure tends to push the reducing valve against the seat). When the spring (3) is completely unloaded, the gas supplied to the reducer under pressure P1 enters the high-pressure chamber. Under the action of the spring (17), the valve hermetically closes the seat, and the gas does not enter the working pressure chamber.

When the working pressure is set by turning the pressure screw (1) clockwise, the spring (3) is compressed and moves the valve (14) through the diaphragm. Through the formed gap between the valve and the seat (13), the gas from the high-pressure chamber enters the working pressure chamber, from where, under pressure P2, to the consumer.

The channel (19), which is formed by holes in the pusher (18) of the reducing valve, connecting the cavity formed by the surfaces of the valve and the hole in which it moves with the working pressure chamber, balances the valve with respect to the outlet pressure.

When the gas sampling is stopped, the pressure in the working chamber will increase and through the channel (19) squeezes the membrane, the valve under the action of the spring (17) hermetically presses the valve with the seal (21) to the seat, thereby stopping the gas flow through the reducer.

Thus, the inventive device provides an increase in the accuracy of maintaining a given value of the outlet pressure in the operating range of the gas flow rate.

Claims (4)

1. Gas pressure regulator, consisting of a body connected to the inlet and outlet fittings, a cover with a pressure screw and a spring, which is screwed to the body through a diaphragm with a pressure disk attached to the diaphragm, a saddle and a plug with a pressure reducing valve are fixed in the central channel of the body with a nut with a spring, characterized in that the reducing valve is made up of a valve body screwed together, a pusher with a channel formed by the holes in the pusher of the reducing valve connecting the cavity formed by the valve surfaces, and the hole in which it moves in the working pressure chamber, a cap nut and sealant. 2. The gas pressure regulator according to claim 1, characterized in that the inlet and outlet fittings are connected to the body by a glue. 3. Gas pressure regulator according to claim 1, characterized in that the inlet and outlet fittings are connected to the body by screwing. 4. Gas pressure regulator according to claim 1, characterized in that a filter is installed in the inlet connection.

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