The pressure regulator

 

(57) Abstract:

The invention relates to an automatic gas pressure regulator and can be used in pneumatic systems that are required to automatically maintain a constant flow rate of the working fluid when the input pressure. The aim of the invention is to improve the accuracy, simplification and extension of the control range. The aim is achieved in that the flow regulator, comprising a housing with inlet and outlet nozzles installed inside between elastic tubular shutter forming with the walls of the casing controlling the camera, and the control device, the latter is in the form of a hollow piston defining a core hole, which regulates the inflow of air into the control chamber, located in a closed piston chamber having input channels and output regulating air flow channel for supplying air to a set pressure and a channel for supplying a regulated flow. 1 Il.

The invention relates to an automatic gas pressure regulator and can be used in pneumatic systems that are required to automatically maintain a constant flow rate of the working fluid, changing whine regulatory body under the action of the pressure regulating flow [1].

The disadvantage of this controller is the inability remote control the flow of the working fluid.

Closest to the proposed technical essence is a pressure regulator comprising a housing with inlet and outlet nozzles and installed inside between elastic tubular shutter forming with the walls of the casing controlling the camera, and control device [2].

The disadvantages of the known regulator are low sensitivity and the difficulty settings of the controller.

The aim of the invention is to improve the accuracy, simplification and extension of the control range.

The aim is achieved in that the pressure regulator comprising a housing with inlet and outlet nozzles installed inside between elastic tubular shutter forming with the walls of the casing controlling the camera, and the control device, the latter is in the form of a hollow piston defining a hole, placed in a closed piston chamber to form with the housing first and second end cavities connected respectively with a source of predetermined pressure and the outlet pipe, and a closed piston chamber is connected with channels C specifies the hollow hole of the piston.

The pressure regulator shown in the drawing.

The regulator includes a housing 1 with an inlet 2 and outlet 3 nozzles and installed inside between elastic tubular shutter 4, the control chamber 5, the control device is in the form of a closed piston chamber 6, which is hollow piston 7 having sets (ellipsometry) hole 8, channel 9 for supplying the piston of air with a given pressure, the channel 10 for supplying the piston controlled environment, the channel 11 for supplying to the control chamber of the control air flow and channel 12 for the discharge of air from the control chamber to the atmosphere.

The controller operates as follows.

On the channel 9 to the piston with one hand, air is supplied to a set pressure Passequal to the pressure Ppadjustable thread:

Pass.= Pp.

On the other side of the piston through the channel 10 is supplied adjustable medium pressure Pwith. In case of equality of pressure Pass.and RS.the piston is in the position in which the hole in the piston is located between the channels 11 and 12. In this position, both channels are blocked by the piston. With increasing pressure Pwiththe piston is displaced to the left, opening the channel 11. The air hepatica, reducing the flow area up until equal pressure Pwithand Rass. The piston takes a position closing the channel 11. In the case of decreasing pressure Pwiththe piston moves to the right, opening the channel 12, and the air begins to come out from the control chamber to the atmosphere, the flow area starts to increase up until the pressure Pwithand Rass.equal.

The use of a hollow cylindrical piston with the master core hole, regulating the air supply to the control chamber, which is influenced by the set pressure with one hand and pressure controlled environment on the other hand, allows to increase the sensitivity of the regulator by changing the position of the piston due to the pressure difference acting on the piston, having the same size on both ends, you can replace the piston with the other hole. Use as a reference air pressure simplifies the configuration of the controller due to the fact that the setting is to supply air under pressure Passequal to the pressure regulated flow at normal flow of regulated flow.

A PRESSURE REGULATOR comprising a housing with inlet and outlet Patra in the work chamber, and control device, characterized in that, to improve accuracy, simplification and extension of the control range, the control device is designed as a hollow piston defining a hole, placed in a closed piston chamber to form with the housing first and second end cavities connected respectively with a source of predetermined pressure and the outlet pipe, and a closed piston chamber is connected with the channel inlet and outlet of the control flow into the control chamber arranged with the possibility of switching through the setting hole of the hollow piston.

 

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