SU1332278A1 - Shut-off and regulating device - Google Patents

Abstract

The invention relates to automatic regulation and can be used to automate technological processes on closed irrigation systems, mainly on sprinkling machines. The locking device contains a diaphragm actuator 2, the first shut-off valve 6, the first controlled valve 10, the second shut-off valve 12, BTopoii control valve 13. The connection between the first shut-off valve 6 and the perm control valve 10 of the on-off valve 17 containing between it a control inlet and outlet a tubular regulating member with lateral orifices whose cross section is not more than a cross section of the cross section of the tubular regulating body covered by a load bearing nennym sensing element allows to increase reliability by eliminating water hammer. 1 hp f-ly, 2 ill. in the following 11 t J Figure 1

Description

The invention relates to automatic regulation and can be used for automating technological processes on swirling irrigation systems, but it is also essential for sprinkling machines.

The aim of the invention is to increase reliability by eliminating water hammer when filling the pipeline,

Fig. „1 shows a shut-off and regulating device, a general scheme; 2 shows the design of a two-way valve;

The shut-off and control device contains pipeline 1, the actuator 2 with shutter 3 is located on the diaphragm, the supramembrane cavity of which is connected by tube 4 to the inlet of pipeline 1 and tube 5 through the first shut-off valve 6 sequentially installed, tubes 7 and 8, tube 9 sec. way out

pipeline 1. The control input of the first, lifting, opens the shutter 3

of the other controlled valve 10 is connected to the outlet of the pipeline 1 by a tube 11, the membrane cavity of the membrane actuator 2 communicates

with the exit of the pipeline 1 through the second zotesn from it air. Intensity

12 and control 13 filling valves are determined by the degree of the tube 14, the control input of the second cover of the shutter 3, the value of which

control valve 13 connects with the cross section of the side tube 15 with the outlet of the pipeline 1 and the tube 16 with the inlet of the pipeline 1. The two-position valve 17 is installed between the first shut-off 6 and the controlled 10 valves and contains a tubular regulating member 18 located between the inlet and outlet of the pipeline regulator 1B has side holes 19, the cross section of which is not more than the cross section of the tubular regulator 18, blocked by the spring-loaded spring 20, feel lyny element 21 (membrane). The tubular regulating member 18 has an external thread, allowing for the possibility of screw movement relative to the body of the on-off valve 17, which ensures the vertical movement of the regulating member 18,

The device works as follows.

When water is supplied to the pipeline 1, the submembrane and supramembrane cavities of the membrane actuator 2 are filled, the working spaces of the valves 10, 13 and 17 and the tubes connecting them are 4.5 and 7-9. Switching the first shut-off valve 6 to the position The flow of water from the supramembrane cavity of the membrane actuator 2 30 is opened.

valve 17, in view of the absence of pressure in the discharge pipe of the pipeline 1, in valve 17, under the action of the adjustment 20 of the adjustment membrane 21, the cross section of the regulating

organ 18 and the water flows through

side holes 19, Then the water through the controlled valve 10 is discharged to the DIVISION of the pipeline 1. At the same time the controlled valve

19, being in the neutral position, has a completely open flow area. By reducing the pressure in the supramembrane cavity of the membrane actuator 2, the post-regulating device. The flow of water entering the sprinkler starts filling the empty pipeline 1, parallel to you

0

five

0

five

outlets 19 of the regulatory authority 18,

The end of the filling process is accompanied by a pulsed increase in pressure in the pipeline of the sprinkler. When it reaches a value higher than the set pressure of the spring 20, the membrane 21, moving away from the regulator 18, opens its cross section. As a result, the membrane actuator 2 due to a significant decrease in pressure in its nadmembrane cavity, lifts up, completely opens the flow area of the valve 3 . At the same time, an intensive increase in pressure in the sprinkler is provided to the worker, and the start of work. The valve 12 In view of the fact that the pressure for adjusting the spring 20 is significantly lower than the operating pressure in the sprinkler, during the entire operating period of its operation, the two-way valve 17 is in a fully open state. When the sprinkler is turned off, the first shut-off valve 6 stops the flow of fluid into the on-off valve 17, as a result of which the diaphragm actuator 2 lowers and closes the shutter 3 and thereby stops the flow of water to the sprinkler. When the pressure in the draining machine goes down below the set pressure of the spring 20, the diaphragm 21, lowering, closes the cross section of the regulator 18 and the two-way valve I7 returns to its initial state. The adjustment of the filling rate of the empty pipelines of the sprinkling machines is ensured by the vertical movement of the regulator 18 along the threads. This changes the cross section of the side holes 19.

Claims (2)

1. A locking and regulating device containing a membrane actuator located on the pipeline, the supermembrane cavity of which communicates with the pipeline inlet and through successively installed first locking and first controlled valves with the pipeline outlet; The submembrane cavity of the membrane actuator communicates with the outlet of the pipeline through the second shut-off valve and the second controlled valve, the control inputs of which are connected respectively to the inlet and outlet of the pipeline, the control input of the first controlled valve is connected to the outlet of the pipeline, characterized in that , in order to increase reliability by eliminating the hydraulic shock when filling the pipeline, it contains a two-position valve installed between the first shut-off valve and the first operated valve A tubular regulating member located between its control inlet and outlet has lateral orifices whose cross section is no larger than the cross section of the tubular regulator and is blocked by a spring-loaded sensing element. 2. The device is pop.1, which differs from the fact that, in order to expand the range of regulation, the tubular regulator is installed with the possibility of fixed vertical movement. 2