SU1330609A1 - Arrangement for govering flow rate - Google Patents

Abstract

The invention relates to the field of automatic control of the flow rate and can be used to maintain a given flow rate constant. The purpose of the invention is to increase the speed of reconfiguration and reduce energy costs. The device for controlling the flow includes a housing 1 with two chambers 5 and which are installed bellows 6 and 8, the cavities of which are interconnected and filled with a large coefficient of volume expansion. The performance of the bellows 6 with a larger cross section compared to the bellows 8, supplying it with a rod 9 , the position of which is fixed by the rod stroke limiters 10, 11 connected to the control panel 13 and the thermal generator 19 connected to the control circuit 20, contributes to the speed of changeover and reduction of energy cost. 1 hp f-ly, 1 ill. i SL 00 her about O) about with p

Description

The invention relates to automatic control of the flow rate and can be used 1) to maintain a given flow rate constant.

The goal of izoPrets .i is to increase the speed of reconfiguration and reduce energy costs.

The drawing schematically shows the proposed device, a General view.

The device for regulating the flow rate a contains body 1 with input 2 and output 3 nozzles, chalk (with which a primer is installed 4. Body 1 includes a task chamber 5 with ocHOBHbLM bellows 6 filled with a liquid with a large 1m volume expansion coefficient, and chamber 7 with an additional bellows 8, associated with a locking organ 4. The cavities of the main and additional bellows communicate between the co (3rd, the transverse main bellows 6 is larger than the cross-section of the additional bellows 8. On the mobile / bottom of the main bellows 6, one t the nose of which is fixed, the rod 9 is placed. 15. The chamber 5 of the task is placed. The stoppers are 10 and 11 turns.

rod connected to the electromagnetic zo level determined by the necessary

the actuator 12 and connected to the first outputs of the control unit 13, the second output of which is connected to the inlet of the pneumatic valve 14 installed on the line connected to the compressed air source (not shown) and to the task chamber 5. The control unit 13 contains the key elements 15 installed in the circuit power supply of the electromagnetic actuator 12, the trigger element 16 installed in the power circuit of the pneumatic valve 14, and the delay element 17, the input of which is connected to the output of the start key 18, and the output is installed in the power circuit of the electromagnetic actuator 12. In the bellows 6 The chamber 5 is equipped with a thermal converter 19 connected to the control circuit 20.

The device works as follows.

The key element and the 15th control panel 13 selects the desired fixed position of the device Open, Close or Middle position. When starting the key 15, the tension of the pygap is applied to the delay element 17 and the pneumatic valve 14, which gives a pressure impulse to the chamber 5 and causes the bellows 6 to move downwards, which in turn moves the sylphs to the 8th locking member 4 to max. This lower position is as open as possible. The delay element 17 through a certain orem closes the output of the key 18, through the key elements 15 supplies power to the winding of one of

limiters stroke or both at once depending on the desired position of the rod, and hence the locking organ. This causes pressure to pass through the fluid to the main bellows and causes it to move upwards. The rod rests on the upper stroke limiter 10 and remains: in this position, after removing the supply voltage from the lower limiter II, provided by the delay element 17. Other positions Open, closed. Provided similarly.

The exact movement of the closure member relative to the fixed positions to the predetermined position occurs due to the change in the temperature of the liquid using a thermal converter 19 and the control circuit 20, which stabilize the liquid temperature by a given 35

the position of the valve body; 4 relative to the housing 1. Changing the gap between the locking member 4 and the housing 1 causes a dynamic change; resistance to flow and change in its flow.

Claims (2)

1. A device for controlling the flow, comprising a housing with inlet and outlet nozzles, between which a closure member is installed, connected to the main bellows filled a liquid with a large coefficient of volume expansion, in which a thermal converter is installed, connected to a control circuit, characterized in that To speed up the retuning and reduce energy costs, it contains a control panel, a task chamber in which the main bellows is located, one end of which is fixed, and the rod is fixed on the movable end, the rod stroke limiters connected to the electromagnetic drive connected to the first outputs of the control panel, the second 313306094 the output of which is connected to the input 2. The device according to claim 1, of tl and - a pneumatic valve installed on the remote control so that the control panel is connected} to the source of compression and stamina contains the key elements of the air and the task chamber, and in the power supply circuit an electro-, locking member is connected to the main magnetic actuator, a trigger element, a bellows through an additional force-mounted pneumatic background, the cavity of which is connected to the valve, and a delay element, the entrance of the main bellows, which is cross-sectionally connected to the exit launcher section of which about more poperechnogogo yutyucha, and an output circuit section set in the additional bellows. 10pitani electromagnetic drive.