RU130026U1 - VALVE VALVE - Google Patents

Abstract

1. A gate valve comprising a seat, an overlapping element, bypass channels, characterized in that permanent magnets are located in the saddle, and a ferromagnetic ring is placed in the closure element. 2. The gate valve according to claim 1, characterized in that in its central part (seat) a cylinder is made in which a piston rod is connected, connected to the overlapping element. The gate valve according to claim 2, characterized in that the cylinder is connected to the discharge pipe by channels. The gate valve according to claim 1, characterized in that between the upper part of the housing and its central part there are bypass channels in which there are jumpers connecting the upper part of the housing to the central.

Description

The utility valve-valve model refers to pumping installations that are widely used in industry (pumps, blowers, compressors, etc.).

The constituent elements of pumping units are:

- intake valve;

- check valve;

- gate valve.

The suction valve is installed on the suction pipe and is necessary to fill it with water (before starting the pump).

The design of the receiving valve given in [1] is taken as an analog.

A more modern design of the receiving valve is taken as a prototype [2], which has a number of significant drawbacks, namely:

- large aerodynamic losses, as the fluid flow twice sharply changes the direction of movement;

- a large mass of moving parts (closing body), the retention of which consumes a certain part of the flow energy.

The purpose of the proposed utility model is to develop the design of the intake valve for pumping installations, which would not have the above disadvantages.

In addition, the proposed valve must perform the functions of a non-return valve and a gate valve.

When installing a centrifugal pumping unit, valves are installed on the discharge pipeline, which act as a shut-off element and a capacity regulator (depending on the opening of the area of the hole for the passage of liquid).

Centrifugal pumps are put into operation with a closed valve on the discharge pipe. This operation is performed in order to reduce engine power during pump start-up, and, consequently, to reduce starting currents.

Closing or opening the valves currently used is carried out manually or by means of an electric, pneumatic actuator, which requires additional capital costs and energy consumption during its operation.

Figure 1 shows the construction of a utility model - valve-gate valve - in the closed state, and figure 2 - the valve is open for passage of fluid.

The valve-valve contains a housing consisting of an upper part 1 and a lower 2, an overlying element 3, a gasket 4, a central part - a seat 5, a cylindrical cavity 6, bypass channels 7, throttling channels 8, a nylon sleeve 9, a piston rod 10, connected to the overlapping element, permanent magnets 11 and rings 12 made of ferromagnetic material.

The gate valve is installed both on the suction and on the discharge pipe. On the suction pipe, the proposed device performs the functions of a receiving valve, and on the discharge - valves and check valves.

The valve-valve works as follows: when starting the pump, the overlapping elements 3 of the devices are located in the lower part of the housings 2, and the valve and valve are closed.

After starting the pump, the pressure of the fluid flow acts on the overlapping elements 3, and the overlapping elements 3 together with the piston rod 10 move upward, opening the bypass channels 7 for the passage of the fluid.

The slow rise of the overlapping element 3 is ensured by the flow of the fluid from the cylindrical cavity 6 through the throttling channels 8 due to their small cross section. The increase in pressure in the cylindrical cavity 6 is created due to the action of pressure on the overlapping element 3, which moves in place with the piston rod 10.

In order to reduce energy losses in the seat 5, permanent magnets 11 are installed, which, interacting with the ferromagnetic rings 12, keep the overlapping element 3 in the raised state (with the valve-valve open).

When the pump stops, the overlapping elements 3 in the receiving valve and the valve under the influence of gravity and the pressure of the water column fall down, blocking the pipelines.

To keep the overlapping element 3 in a raised state, the force of interaction of permanent magnets with ferromagnetic rings F _m must be equal to the force of gravity, i.e. F _m = mg, where m is the mass of the overlapping element.

The proposed utility model “Valve-gate valve” provides minimal energy loss in both the suction and discharge pipelines and creates conditions for the automatic start-up of pumping units (the valve opens and closes automatically).

LITERATURE

1. Velelov A.I. Mine drainage / A.I. Veselov. - Sverdlovsk: State scientific and technical publishing house of literature on ferrous and non-ferrous metallurgy. Sverdlovsk branch, 1956.- P.531.

2. Popov V.M. Drainage installations: reference manual / V.M.Popov. - M .: Nedra, 1990. - P.253.

Claims (4)

1. The valve-valve containing a seat, an overlapping element, bypass channels, characterized in that the saddle is equipped with permanent magnets, and a ferromagnetic ring is placed in the overlapping element. 2. The valve-valve according to claim 1, characterized in that in its central part (seat) a cylinder is made in which a piston-rod is placed connected to the overlapping element. 3. The gate valve according to claim 2, characterized in that the cylinder is connected to the discharge pipe by channels. 4. The gate valve according to claim 1, characterized in that between the upper part of the housing and its central part are bypass channels in which there are jumpers connecting the upper part of the housing to the central.

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