SU1742797A1 - Pressure stabilizing device - Google Patents

Abstract

The invention relates to pressure control of liquid and gaseous media. The purpose of the invention is to simplify and expand the field of application of the device. The device contains an input channel 1, a cylindrical body 2, a drain window 3, a glass with a cargo load 4, a throttle hole 5, an inter throttle chamber 6, tangential windows 7, a conical protrusion, a damper chamber. 2 hp f-ly, 2 ill. ate with h | go v4

Description

Phil.1

This invention relates to the regulation of the pressure of a liquid and gas medium.

A device for stabilizing pressure is known, comprising a valve loaded with a body weight and a seat with respect to which the valve moves. As an example of such a device can be a boiler safety valve.

The disadvantage of such a device is increased insensitivity and dimensions.

It is also known a device for stabilizing pressure, containing a loaded static force, such as a spring. the valve and the seat relative to which the valve moves. An example of such a device is the turbine lubrication system drain valve.

The disadvantage of this device is increased insensitivity and statism.

The closest to the proposed technical essence and the achieved result is a device for stabilizing the pressure, containing

a cylindrical body (saddle), the cavity of which is connected to the inlet channel;

The disadvantage of such a device is the need to increase its mass and dimensions when stabilizing high pressure levels or when passing through large flow rates.

The aim of the invention is to simplify and expand the field of application of the device.

To achieve this goal, in the device for stabilization of pressure, containing a cylindrical body, the cavity of which is connected to the inlet channel, the shutter of the regulator, made in the form of cup edges with a load and tangential windows on the side surface, the cylindrical body is made with side drain windows and an end wall in the upper part, in which the throttle opening is made, the cup is mounted on a cylindrical body with the possibility of overlapping with its edge Skog housing to form a regulating or- gaṇa and forms with the end wall of the cylindrical body mezhdrosselnuyu chamber connected via a throttle hole to the cavity of the cylindrical body and through a tangential discharge windows.

In order to correct the static pressure response from the flow rate at the bottom of the glass, a profile conical protrusion is formed, which forms a variable choke with the throttle orifice.

In order to improve the damping, at least one partition with a throttle bore is installed in the cylindrical housing, which forms a damping chamber with the end wall.

Figures 1 and 2 show a schematic diagram of a stabilizing device.

The device contains an input channel 1, a cylindrical body 2. a drain window 3, a cargo cup 4, an orifice 5, an inter-throttle chamber b, a tangential window 7, a conical protrusion 8 and a damper chamber 9.

Figs, 1 and 2 are indicated: Px - stabilized pressure; Рк - pressure in the inter-throttling chamber.

The fluid from the inlet channel 1 is supplied with pressure Px into the cavity of the cylindrical body 2 and then drains through two lines: drain windows 3, overlapped by the edge of the cargo cup 4, and through successively located throttle hole 5 and tangential windows 7, forming an interspace chamber in its gap 6 with the pressure in her Rk.

Denoting G is the weight (strength of the tin) of cargo 4, F is the section of glass 4, fT is the section of tangential windows 7, and the cross section of the throttle bore 5. You can write the following equilibrium equation:

G F P

to.

(one)

where is pk px

1 + f2

 9

and finally: G F Px

Comparing expressions with an equilibrium equation

G f

(four)

it can be assured that the weight of the cargo

p glass (clalana) decreases by (W) times.

For example, compare the weights of the cargo valves calculated by formulas (1) and (4) under the following initial conditions: PX - 20 kg / cm; Pk - 0.3 kg / cm2; F 20 cm, according to (1) G 400 kgf (for a known device), according to

(4) G 6 kgf (for the proposed device).

The structural modification of this stabilizing device allows one to obtain a damping effect due to the presence of an inter-throttling chamber 6 and the application (FIG. 2) of its different modifications, for example, a variant with several series-connected chambers 9 or a combination of laminar and turbulent chokes 5, etc., as well as the required statistics of the pressure characteristic of the load due to the operation of the feedback cone 8.

The device works as follows.

With an increase in the regulated pressure relative to a given P, the pressure Pk in chamber 6 also rises. Glass 2, having overcome its weight. the action of this pressure raises and increases the discharge through the windows 3. As a result, the pressure is restored at the same level, since the forces acting on the valve (weight and pressure force) remain almost unchanged at all loads.

Similarly, but with a different sign, the perturbation is tested when the pressure decreases.

The economic efficiency of the proposed device consists in simplifying and simplifying the design of the device and, accordingly, in reducing the cost of manufacture and maintenance, as well as in expanding the use of the device in facilities with high pressure and flow rates.

Claims (3)

1. A device for stabilizing pressure, comprising a cylindrical body. the cavity of which is connected to the inlet channel, the shutter of the regulator, made in the form of the edges of the glass with the load and tangential windows on the lateral surface, is different from the fact that, in order to simplify and expand the field of application of the device, the cylindrical body is made with side drain windows and end wall in the upper part, in which the the throttle hole is not located; the cup is mounted on the cylindrical body with the possibility of overlapping with its edge the side drain windows of the cylindrical body to form a regulating body, the glass forms with the end wall of the cylindrical body an inter-throttle chamber connected through a throttle opening to the cavity of the cylindrical body and through tangential windows with a drain 2. The device according to claim 1, that is, with the fact that the profile conical protrusion is formed into two glasses, forming a variable choke with the throttle orifice. 3. A device in accordance with Claims 1 and 2, characterized in that, in order to improve the damping, at least one partition with a choke opening is installed in the cylindrical housing, forming a damping chamber with the end wall.