SU1361408A1 - Close-control equipment - Google Patents

Abstract

The invention relates to rebar and can be used for smooth adjustment of the flow of working media with a rapid cessation of the supply of working medium. The purpose of the invention is to expand the scope and speed of closing. The device includes a valve body 7 with a saddle and a rod 6 located in the housing 1. The saddle is made in the form of a movable stepped sleeve 2.. The device is additionally introduced two valves 4 and 10, respectively controlled through the pushers 3 and 8 (L Co 05 N {o 00 bdaZ

Description

the sleeve 2 and the button 9, which is made integral with the pusher 8, the sleeve 2 is made with different effective areas f, f. and f3 Valve 4 is installed with the possibility of communicating the inlet and intermediate 8 cavities among themselves, and valve 10 - with the possibility of communicating the intermediate lane 1

The invention relates to the field of fittings and can be used to smoothly adjust the flow rate of working media with a rapid cessation of the supply of working medium to the consumer.

The purpose of the invention is to increase the speed of closing the device and reducing the power capacity by using the energy of the working medium to close the device.

The drawing shows the proposed device, the cut.

The locking and regulating device comprises a housing 1 with an inlet a, an output 5 and an intermediate 5 cavity, in which a seat is arranged, made in the form of a stepped sleeve 2. At the same time, the effective area f of sleeve 2 in intermediate cavity B is larger than the effective area f of sleeve 2 in the input cavity, and the effective area f is greater than the effective area fj of the sleeve 2 in the output cavity B. The sleeve 2 through the pusher 3 interacts with the valve 4, which through the opening 5 in the housing 1 communicates the input cavity a with the intermediate c. A valve 6 is also located in the valve casing 1, which is connected to the locking member 7, which interacts with the sleeve 2. The rod 6 contains a pusher 8 with a button 9, which interacts with the valve 10, which connects the intermediate cavity 6 with the atmosphere. The valves 4 and 10 and the intermediate cavity 6 are connected by a channel g, made in the housing 1. The rod 6 is equipped with a flywheel 11, in the center of which, for ease of operation, is arranged. on button 9.

The locking control device operates as follows.

ty 6 with the atmosphere. If it is necessary to quickly close the device due to the effect of an external force on the valve 10, a pressure is created that acts on the unbalanced area (fj-f) of the sleeve 2, which causes movement of the sleeve 2 to the locking member 7. 1 Il.

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In the initial position, the device is closed. The locking member 7 blocks the access of the working medium from the inlet cavity and into the outlet 5. The sleeve 2 is in its lowest position and pushes the valve 4 through the pusher 3, opening the access of the working medium from the input cavity c to intermediate 6.

During operation, the operator moves the rod 6 by rotating the flywheel 11, increasing the gap between the shut-off pP gun 7 and the sleeve 2 and ensuring smooth adjustment of the flow rate of the working medium through the gap. Since the effective area of the sleeve f is greater than the effective area of the sleeve f, the output pressure on the unbalanced area () of the sleeve 2 is kept in its lowest position.

If it is necessary to quickly close the device, for example, in the event of an emergency, the operator presses button 9 with the pusher 8, after which through the depressed valve 10 an intermediate cavity 6 communicates with the atmosphere.

Channel d in housing 1 is made in such a way that the hydraulic resistance of the line connecting the input cavity a to the intermediate cavity is greater than the hydraulic resistance of the line connecting the intermediate cavity 6 to the atmosphere. This can be ensured, for example, by selecting the ratio of the areas of the hole 5 and the channel g. Therefore, when you press button 9, the pressure in the cavity g drops. The effective area f is greater than the effective area f J on which the output pressure acts (at fully

open valve 7, the output pressure may be equal to the input pressure). Under the action of a pressure force acting on an unbalanced area (fj-fj), the sleeve 2 moves up, the valve 4 closes, the pressure from the intermediate cavity finally is released into the atmosphere, the sleeve 2 moves up and interacts with the locking body 7, separating the input cavity and devices with output 5.

Then button 9 can be released. At the same time, the device remains closed, since there is no pressure in the cavity (valve 4 is closed).

To bring the locking control device to its initial position by rotating the flywheel 11, the rod 6 together with the sleeve 2 moves to the lowest position, in which the sleeve 2 through the pusher 3 opens the valve 4, together with the input cavity a with the intermediate c. By the action of the inlet pressure on the unbalanced area (f, -f2), the sleeve 2 is fixed in the lowest position and held in this position with further opening of the device by rotating the flywheel 11.

Editor N. Dumbass

Compiled by M. Koltsov

Tehred M. Didyk Proofreader M. Sharoshi

Order 6212/41 Circulation 804Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

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Claims (1)

The formula of the invention. A locking and regulating device, in the case of which a locking member is located associated with the rod and interacting with a movable seat, characterized in that, in order to reduce energy consumption and increase the closing speed of the device, the saddle is designed as a stepped sleeve, forming with the body input, output and intermediate cavity, and the effective area of the sleeve in the intermediate cavity is larger than the effective area of the sleeve in the input cavity, and the effective area of the sleeve in the input cavity is pain above the effective area of the sleeve in the outlet cavity, two valves are placed in the device body, one of which is installed with the possibility of communicating the inlet and intermediate cavities with each other when the valve interacts with the sleeve, and the other with the possibility of the intermediate cavity communicating with the atmosphere external control force, while the hydraulic | | Cescré resistance of the line, communicating the input cavity with the intermediate one, is greater than the hydraulic resistance of the line, communicating the intermediate cavity with the atmosphere.