SU1203295A2 - Cut-off and regulating device - Google Patents

Description

11203295

related to pipe

wire fittings for gas industry and is intended to be installed on gas production lines for shutting off and controlling the transported medium and is an improvement of the known device according to aut. No. 785579 "

The purpose of the invention is to increase the reliability and efficiency of the device by controlling the locking and adjustable elements by a single drive.

1 shows the device in the closed position, a longitudinal section J in FIG. 2 is view A in FIG. 1.

The device contains a KOp: ciyc 1, in which an axial bore hole 2 is made. Inside the COOCHQ body 1, a flange 3 ,, seat 4 with hole 5 and sealing elements 6 and 7 are fixed to the through hole 2. The guide elements 8 are installed in the saddle 4 a flat gate 9 with an insert 10 and a sealing element 11, seal the sealing surfaces of the gate 9 and the seat 4 over the entire adjustment range.

In the housing 1, outside the bore hole 2, using a bracket 12, an axle 13 is installed on the axis 13, which consists of two flaps 14 and 15, one of which is deaf and the other is unloading with a hole 16p. Sealing elements I7 and 18, sealing the sealing surfaces of the flaps 14 and 15 and the gate 9.

The flat slide gate 9 and the rotary locking element are connected to the actuator 20 through the movable rod 19. The stem 19 with the impact element 21 is provided with a stepped sleeve 22 that surrounds it with a sealing element 23. With different effective cross-sectional areas on the ends, As a result, the step bushing 22 has the possibility of axial movement together with the rod 19, in which there is a flow 24 communicated with the atmosphere. On the stepped bushing 22, a groove 25 is made on a step of smaller diameter, and the rotary locking element is installed to interact with the groove 25. The mobility of the stepped bushing 22 is limited by the extreme positions of the displacement-NIN (upper and lower). In the lower position, the stepped sleeve 22 is wiped into the bracket 12, and in the upper position it is limited by the stroke of the stem 19. To return the stepped sleeve

22 to the extreme upper position serves as a collar 26, made on the rod 19. The housing 1 is closed by a cap 27 with sealing elements 28 and 29. The device operates as follows;

in a way.

In the initial position (closed), the shutter 14 pulls the shutter 15 to the gate 9 and covers the bore of the isber 9 with the insert 10,

stopping the flow of medium. If it is necessary to open the device, a corresponding signal is given to the actuator 20, which begins to move the rod 19 downwards. A step bushing 22 under

due to the pressure of the controlled medium, due to the difference in the effective cross-sectional areas at the ends, moves downwards along with the rod 19, opening the gate 14, which by its

CTOpoHOPi, opposite its compacted surface, opens the relief valve 15 to it. Displacement of the valves 14 and 15 continues until those nops until the step sleeve 22

It does not reach the bracket 12, which limits its movement 3, while the rotatable locking element of the turn angle is less than 90, and the rod 19 has sold; it moves downwards.

After the rod 19 passes idle: that move in the gate 9, it moves the flat .Piber 9 with the insert 10 O7 around the seat 4, as a result of which the passage 5 of the saddle 4 partially opens the gate 9 and the amount of passage 5 ;.

If it is necessary to overlap the low passing medium, a corresponding maximum value signal is applied to the actuator 20, which begins to move the rod 19 upwards. The latter moves the gate 9 up, completely overlapping the passage 5 from the S2 in the saddle 4. Upon further upward movement, the rod 19 with its shoulder 26 abuts against the stepped sleeve 22 and together with it moves

 until the outer surface of the shnber 9 comes into contact with the plane of the flap 15. At the same time, the flaps 14 and 15, which are superimposed one upon the other, block the passage opening of the gate 9 with the liner 10, stopping the flow of the medium.

17 28

I

The tightness of the seal is achieved by means of sealing elements 6, 11, 17 and 18 installed on the ends of the gate 9, the flange 3, 5 of the valve 14 and the discharge valve 15 pressed against the adjacent ends of the medium pressure.

24

.20

29 23 26 21

1203295

did

I-TSSH-Ts

L

4J-II.U.

Editor M. Blanan

Compiled by C, Nesterenko

Tehred L. Mikesh Proof-reader I. Erdeyi

Order 8401/40 Circulation 897 Subscription

VNIIPI USSR State Committee

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

Branch PPP Patent, Uzhgorod, st. Project, 4

Claims (1)

ZAP0RN0-REGULATING DEVICE for ed. No. 785579, characterized in that, in order to increase reliability and. of economy, the rod is equipped with a stepped sleeve enclosing it, mounted with the possibility of axial movement and fixing it in extreme positions, moreover, a groove is made on the steps of a smaller diameter, and a rotary locking element is installed with the possibility of interaction with the specified groove.