Device for control of pressure and flow rate of fluid

FIELD: valving systems.

SUBSTANCE: device comprises pulse tube that connects the control space of pilot with the receiver of the static outlet pressure and is connected with the inner chamber and switch mounted at the site of pipe joint made of e.g. three-position cock. The flexible coupling controls the space between the side and flanges of the inlet and outlet branch pipes depending on the switch position.

EFFECT: expanded functional capabilities.

1 dwg

 

The invention relates to valves and can be used to regulate the flow and pressure of the working medium (liquid, gas or vapor) in systems engineering, chemical, gas and other industries.

Known regulating device that regulates the pressure and flow rate of the working environment / Pat Russian. Federation, IPC6G05D 16/00. The regulating device / Bykov A. F., Kislov S.M.; applicant and patentee Research and testing centre Central Institute of aviation motors. No. 4851277/24; Appl. 31.05.90; publ. 20.01.95 / [1].

A disadvantage of this device is its structural complexity, the large hydraulic resistance to fluid flow, small flow areas of the channels, which can become clogged with solid particles, if they exist in a production environment.

It is also known regulating device /pressure Regulator "Axial Flow Volve". The prospectus of the company AMS, November 1982 / [2]containing a flexible element in the flow cross section in the form of an elastic coupling, which simplifies the design of the regulator and reduces its hydraulic resistance.

A disadvantage of this device is its lack of functionality, because it is used as a pressure regulator, but does not measure and regulate the flow of liquid.

The closest to the claimed invention on the totality of symptoms is the pressure regulator /PT Russian Federation, IPC6G05D 16/06. The pressure regulator /celovalnikov p. g, Nikonov VP; applicant and patentee AEO "Signal". No. 94011046/09; Appl. 30.03.94; publ. 20.02.97/ [3]including the building, situated between the inlet and outlet nozzles, counter flanges are fastened together in the center and form an internal chamber, an elastic sleeve mounted between the housing and the opposite flanges of the inlet and outlet nozzles and forming with the side surfaces of the counter-flange control valve, and with the case - control cavity, connected to the output of the pilot, the inlet of which is connected to the static inlet pressure, the inner chamber is connected with receiver full pressure, made in the form of discharge tubes arranged in the inlet pipe and secured at its opposite flange, pressure regulator equipped with a meter differential pressure is connected through the pulse tube, respectively, with an internal camera and receiver static inlet pressure, taken as a prototype.

For reasons that impede the achievement of the following results when using known devices include the fact that it cannot regulate the fluid flow passing through it.

The invention consists in the extension of the scope of the regulating device.

Technically, the result is the increased functionality of the design to provide flow control through her working environment.

This technical result in the implementation of the invention is achieved in that in the known device regulating the pressure and flow rate of the working environment, including housing, located between the inlet and outlet nozzles, counter flanges are fastened together in the center and form an internal chamber connected with receiver full pressure, made in the form of discharge tubes arranged in the inlet pipe and secured at its opposite flange, an elastic sleeve mounted between the housing and the opposite flanges of the inlet and outlet nozzles and forming with the side surfaces of the counter-flange control valve, and with the case - control cavity, connected to the output of the pilot, whose input is connected to the static inlet pressure, measuring the pressure differential, coupled with the internal camera and receiver static inlet pressure, the feature is that the pulse tube connecting the control cavity pilot static output pressure, is connected with the inner chamber, and at the junction of the tubes is selected, when this elastic coupling regulates the clearance relative to the side surface of the opposite flange inlet and outlet fittings depending on the switch position.

On the line is Ah presents: figure 1 shows a regulating device, his incision, figure 2 - site And in the mode control device of the fluid flow.

Information confirming the ability of the invention to provide the above technical result are as follows. The regulating device includes a housing 1, input 2 and output 3 nozzles, input 4 and output 5 of the cavity, the elastic sleeve 6, is fixed between the housing 1 and the opposite flanges of the input 2 and output 3 nozzles, the control cavity 7, is placed between the elastic sleeve 6 and the housing 1. Counter flanges input 2 and output 3 of pipes fastened together by the screw 8, pressing between the elastic sleeve 6 and the housing 1 and forming an internal chamber 9. The pilot 10 is connected to the receivers static input 11 and output 12 of the pressure pulse through the tubes 13 and 14 and through the pulse tube 15 with the control cavity 7.

On the opposite flange of the inlet pipe 2 is fixed receivers total pressure of 16, made in the form of discharge tubes connected to an inner chamber 9. Measuring differential pressure 17 pulse tubes 18 and 19 connected to the inner chamber 9 and the static inlet pressure 11.

Pulse tube 14 connecting the control cavity of the pilot (not shown) with the static output pressure 12, connected to the pulse tube 20 when nutrena camera 9, and at the junction of the tubes has a mode switch of the controller 21, for example, in the form of a three-way valve.

The device operates as follows. In static betrachten mode elastic sleeve 6 is pressed against the side surface of the opposite flange inlet 2 and outlet 3 of the nozzles due to the impact of the output pressure from the pilot 10 in the control cavity 7. When the switch 21 (figure 1) output pressure of the pilot 10 depends on the pressure in the output cavity 5, supplied to the control cavity pilot 10 (not shown), and the values of the settings, pilot 10. In the presence of flow, the flexible coupling 6 adjust the gap with respect to the side surface of the opposite flange of the input 2 and output 3 nozzles, while maintaining the output pressure in the cavity 5, and hence in the load constant. At the same time in the pressure tube 16 is formed by the total pressure taking into account the speed of pressure equal to

Ar=pV2/2g

where V is the flow velocity at the place of installation of the receiver the total pressure; p - density; g is the acceleration of gravity. This total pressure particle+ Ar is supplied into the inner chamber 9. For measuring pressure differential 17 to the pulse tubes 18 and 19 is supplied complete and static pressure, and measuring the pressure drop 17 determines the rate of flow in the section of the inlet cavity. Consumption in the Council of Europe the situation is determined by the product of the average velocity in the cross-sectional area.

If the mode switch knob 21 is in the position shown in figure 2, the output pressure of the pilot 10 will depend on the total pressure in the inner chamber 9, which when supplied to the control cavity pilot 10 (not shown), and the values of the settings, pilot 10. Flexible coupling 6, by adjusting the gap with respect to the side surface of the opposite flange of the input 2 and output 3 nozzles will maintain a constant dynamic pressure and, consequently, to adjust the speed of the working medium passing through the regulating device and hence its consumption.

The use of this invention allows you to replace one, two regulating devices: pressure regulator and flow controller.

Sources of information

1. Pat Russian Federation, IPC6G05D 16/00. The regulating device / Bulls A.F., Kislov S.M.; applicant and patentee Research and testing centre Central Institute of aviation motors. No. 4851277/24; Appl. 31.05.90; publ. 20.01.95.

2. The pressure regulator "Axial Flow Volve". The prospectus of the company AMS, November 1982.

3. Pat Russian Federation, IPC6G05D 16/06. The pressure regulator / celovalnikov p. g, Nikonov VP; applicant and patentee AEO "Signal". No. 94011046/09; Appl. 30.03.94; publ. 20.02.97.

The device controlling the pressure and flow rate, R is the working environment, includes building, situated between the inlet and outlet nozzles, counter flanges are fastened together in the center and form an internal chamber connected with receiver full pressure, made in the form of discharge tubes arranged in the inlet pipe and secured at its opposite flange, an elastic sleeve mounted between the housing and the opposite flanges of the inlet and outlet nozzles and forming with the side surfaces of the counter-flange control valve, and with the case - control cavity, connected to the output of the pilot, the inlet of which is connected to the static inlet pressure, measuring the pressure differential, coupled with the internal camera and receiver static inlet pressure, characterized in that a control line connecting the control cavity pilot static output pressure, is connected with the inner chamber, and at the junction of the tubes is selected, when this elastic coupling regulates the clearance relative to the side surface of the opposite flange inlet and outlet fittings depending on the switch position.



 

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