SU1619237A1 - Device for controlling flow rate - Google Patents

Description

This invention relates to automatic regulation and can be used to regulate the flow of liquid and gas.

The gel of the invention is a simplification of the device.

The drawing shows a device for controlling the flow, longitudinal section.

The device consists of a variable voltage source 1 connected to a winding 2, which encloses the device case 3 from the outside. The inner surface of the housing 3 is provided with an annular protrusion 4. Inside the housing 3 there is a ferromagnetic ring 5 installed with a gap 6 relative to the housing 3. Between the ferromagnetic ring 5 and the annular projection 4, there is an elastic element (spring) 7, and the inner surface of the ring 5 is connected with an annular protrusion 4 by means of a flexible sleeve 8 made of elastic material impermeable to the working medium.

The device works as follows.

When the voltage is disconnected, the source 1 winding 2 does not create a magnetic field and the ferromagnetic ring 5 under the action of the elastic element 7 is held in its original, extreme left relative to the annular protrusion 4, position. The flexible hose 8 in this position is maximally stretched along the pipeline and creates minimal resistance to the flow of the working medium. A portion of the working medium through the gap 6 leaks into the space between the flexible sleeve 8 and the housing 3, and the device operates in the passive flow rate stabilization mode, since any increase in the flow velocity causes the elastic element 7 to interact with the surface of the ring 5. is compressed by some amount due to

which flexible hose 8 is de

formed, and the volume of the working medium enclosed in the space between the sleeve 8 and the housing 3, being concentrated on a smaller surface, is displaced to the axis of the pipeline. The reduction in the flow area of the device caused by such a deformation allows one to compensate for the change in the flow velocity and the flow rate of the working fluid.

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$ 0 5

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five

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media remains almost constant.

In the case of a decrease in the flow rate, the elastic element (spring) 7 returns the ferromagnetic ring 5 to its original state by stretching the flexible sleeve 8 along the pipeline and thus restoring the previous value of the device’s flow area.

By varying the voltage at source 1, you can set the desired flow rate through the device, which is stabilized in a similar way.

The application of the alternating voltage of source 1 to the winding 2 results in the interaction of the magnetic field of the winding 2 with the ferromagnetic material of the ring 5, the latter begins to move from left to right, pulling the spring 7 into the winding and compressing the displacement of the flexible sleeve 8, which is filled outside with the working medium, helps to reduce the flow area of the device. When the voltage is removed from the winding 2, the elastic element 7, straightening, returns the ring 5 and the flexible sleeve 8 to the initial state.

The flow control device allows the implementation of an arbitrary control law

Claims (1)

Formula of gain A flow control device comprising a housing enclosed in a winding with an inlet and outlet nozzles, between which a ferromagnetic body is placed, an adjustable alternating voltage source connected to the winding, so that simplify the device, the body is made of a non-magnetic material in the form of a pipeline section, the inner surface of which is provided with an annular {protrusion, the ferromagnetic body is made in the form of a ring, installed with a gap in the internal cavity of the body with the possibility of Strongly longitudinal movement between the inlet pipe and the collar, wherein between the ring and the annular ferromagnetic .vystupom installed resilient element and the inner surface of the ring is connected to an elastic working fluid impervious sleeve with the annular projection of the housing.