SU598038A1 - Pressure regulator - Google Patents

Description

(54) PRESSURE REGULATOR

one

The invention relates to the field of water-borne i in meliorasi can be used in any area where it is required in the water supply system to ensure that the pressure is leveled even when there is no movement of the medium in the regulated pipeline.

There are known devices that regulate pressure in water supply systems, which provide pressure even after the presence of fluid in the regulated outlet lX. When the supply voltage stops, the control is equal (after the regulator is equalized with the pressure in the pipeline. Therefore, such adjustments are It cannot be used in systems where pressure is allowed to rise above specified limits.

A pressure regulator is also known, comprising a housing with an inlet and an exhaust pipe, a valve located (between the pipes and attached to a rod kinematically connected with a lever actuator, a membrane sensing element, the cavity of which is connected to the outlet pipe 2).

The regulator provides the specified pressure only after the greatness of the working fluid movement. When the camera stops picking, the pipe is adjusted to

The aim of the invention is to improve the accuracy of the controller .;

To achieve this goal, the proposed pressure regulator contains an additional membrane sensing element mounted on a rod, in which radial channels connected between its own axis are made, one of which is located in the plane of the valve seat, and the second is located in the cavity of the additional membrane sensing element.

FIG. Figures 1 and 2 show a cross sectional pressure regulator in cross section in various modes of operation.

Claims (2)

The regulator is made in the form of a housing 1 with an inlet 2 and an outlet 3 with nozzles, a valve 4, a shtzzha 5, kinematically connected to the lever 6 and a load 7 and having a limited free running relative to the valve 4. (Diaphragms 8 and 9 of diaphragm-sensitive elements form, respectively, half a life 10 and 11. The cavity 11 can communicate B to a closed position through a channel in the stem 5 with the outlet nozzle 3, and in an open pallet, with an inlet nozzle 2. The cavity of the sensitive element is connected by a channel 12 to the outlet nozzle 3, K apav has a saddle 13. In stock S located Axial 14 and radial 15, 16. Channels. The pressure regulator operates as follows: Under pressure on a two-piece. 8 of the medium flowing through channel 12 into cavity 10, it moves all the same and the valve replaces the opening value of the seat 13, adjusting water consumption. In the absence of a drawdown after the regulator, the pressure on the diaphragm 8 increases and overcomes the weight of the load 7; the valve 4 rises to the edge of its upper position and, due to excessive pressure on it, tightly closes the saddle 13 (Fig. 1), At the same time, there is also some overpressure in the direction of closure at the end of the stem 5. In this position, the diaphragm 9 is in equilibrium, since in the cavity 11 the pressure is equal to the outlet pressure. When the pressure on the diaphragm 8 of the cavity 10 of the rod 5, under the influence of the load 7, decreases, through the lever 6 it is pushed down and the pressure through the rod 5 is transferred to the cavity 11 (Fig. 2). The entire movable system and the valve 4 will be in equilibrium, and the degree of opening of the seat 13 (Fig. 3) will be adjusted depending on the water intake; this will maintain a constant pressure, regulated by the load 7, regardless of the pressure changes in the inlet pipe. The pressure regulator on the water mains and irrigation systems allows: to use cheaper non-metallic pipes at the connections to the solenoids to supply water consumers with the necessary reduced head; Refusing construction of pumping installations with tanks and water towers in order to break the jet, which gives significant cost savings for capital construction. Invention A pressure regulator containing a housing with inlet and outlet nozzles, a valve located between nozzles and attached to a rod kinematically connected with a lever actuator, a membrane sensing element whose cavity is connected to the outlet nozzle with a different one. the fact that, in order to increase the accuracy of the regulator, it contains an additional membrane sensing element mounted on the stem, in which axial and radial channels are interconnected, one of which is located in the plane of the valve seat, and the second is located in the cavity of the additional membrane sensitive an item. Sources of information taken into account in the examination: 1, German Patent N ° 2314883, M.cl. Q 05 B 7/01, 1974. 2. Special work handbook, pipes, fittings and equipment for water and sewage facilities. Edition 2 f ed. ,BUT. S.Moskvitina, Stroyizdat, 197O, s, 132-135.