SU972173A1

SU972173A1 - Shut-off device

Info

Publication number: SU972173A1
Application number: SU813281839A
Authority: SU
Inventors: Марк Наумович Токарь; Герман Александрович Трубин; Владимир Михайлович Чулин; Евгений Иванович Баканов
Priority date: 1981-04-28
Filing date: 1981-04-28
Publication date: 1982-11-07

Description

(54) ЗАПОРНОЕ УСТРОЙСТВО(54) SPLITTING DEVICE

1one

Изобретение относитс к арматуростроению и может быть использовано на магистральных и технологических нефтепродуктопроводах .This invention relates to a valve industry and can be used on trunk and process pipelines.

Известно запорно-регулирующее устройство дл трубопроводов, содержащее корпус, внутри которого размещены жестко св занные между собой запорнй орган и дросселирующий элемент. Дросселирующий элемент служит дл снижени скорости потока на запорном органе 1.A shut-off and control device for pipelines is known, comprising a housing within which a stop member and a throttling element are rigidly interconnected. The throttling element serves to reduce the flow rate at the closure body 1.

Однако данное устройство нельз применить в трубопроводах с большим диаметром проходного сечени , поскольку запорный и дросселирующий элементы не разгружены от давлени рабочей среды, что увеличивает энергозатраты на привод устройства .However, this device cannot be applied in pipelines with a large bore diameter, since the stop and throttling elements are not unloaded from the pressure of the working medium, which increases the energy consumption for the drive of the device.

Наиболее близким к предлагаемому вл етс устройство, выполненное в виде цилиндрического корпуса, в котором размещена поворотна дискова заслонка, укрепленна на оси, св занной с приводом посредством плунжера 2.Closest to the present invention is a device made in the form of a cylindrical body in which a rotary disk valve is mounted, fixed on an axis connected to the drive by means of the plunger 2.

Недостатком известного устройства вл етс то, что в процессе поворота запорной заслонки в исходное положение дл перекрыти сечени трубопровода происходит сужение проходного сечени дл потока жидкости, а следовательно, и увеличение скорости жидкости в зоне уплотнительного элемента, что приводит к влени м эррозионного износа наиболее ответственной пары поверхностей - герметизирующей пары, снижа тем самым надежность работы всего устройства.A disadvantage of the known device is that in the process of turning the gate valve to its original position to shut off the pipeline section, the flow area for the fluid flow narrows and, consequently, the fluid velocity increases in the area of the sealing element, which leads to the appearance of erosive wear of the most critical pair surfaces - sealing pair, thereby reducing the reliability of the entire device.

Цель изобретени - повышение надежности работы.The purpose of the invention is to increase the reliability of work.

Дл достижени указанной цели устройство снабжено поворотным запорным диском эллиптической формы, установленным в корпусе последовательно заслонке на поворотной оси, смещенной относительно продольной оси корпуса и снабженной установленным соосно плунжеру штоком, на котором выполнен упор, причем на плунжере шарнирно закреплен кулачок с уступом , взаимодействующим с упором штока, и профилированным пазом, а на корпусе жестко закреплен направл ющий ролик, размещенный в пазу кулачка.To achieve this goal, the device is equipped with an elliptical-shaped rotary locking disc mounted in the housing in series with the damper on the rotary axis displaced relative to the longitudinal axis of the housing and provided with a rod mounted coaxially with the plunger, with a cam hinged on the plunger that interacts with the stop rod, and a profiled groove, and a guide roller fixed in the cam groove is rigidly fixed on the body.

Claims

This design provides minimal fluid flow through the shut-off disc valve by blocking the bore through the rotary disc at the moment the shutter damper deviates from the vertical position by an angle equal to the angle of deflection of the shutter damper planes and the rotary disc. The drawing shows the proposed locking device. The device consists of a cylindrical body 1 having a diameter equal to the diameter of the bore of the pipeline, a gate valve 2 equipped with a seal 3, which is rigidly seated on the diametrical axis 4 with a plunger b driven rod 5 placed on it, driven by a drive 7, a rotary locking disc 8, mounted on an axis 9, on which reinforced shchestren 10 rack brush 11 with a stop 12, a cam 13 having a step 14 and a profiled groove 15, which includes a guide roller 16 reinforced in a holder 17, which is in its very position red, is fastened to the housing 1. In the initial position schtok pinion 11 is mounted coaxially with the plunger 6 with a gap. The device works as follows. When a pulse is opened for opening by means of the actuator 7, the plunger 6 begins to move (to the left side according to the diagram), thereby turning the 5 axis 4 with the pinion 5 with the gate valve 2 fixed on it at a certain angle corresponding to the linear movement of the plunger 6 by the gap size a . When the plunger is moved by an amount a, the pinion rod 11 does not receive a pulse to move and the rotary disk 8 is in the initial, blocking casing section, position, and the flow of liquid passing through the section where the gate valve 2 is installed is minimal and is determined by the amount of leakage through the gaps between the rotary disk 8 and the housing 1. When the plunger 6 is moved, the cam 13 is hinged with it due to the profiled groove 15 and the guide roller 16 installed in the cage 17 rotates, and at the end of the alternation the plunger 6 by the amount a and the stop 12 engages with the shoulder 14 of the cam 13. With the further movement of the plunger 6, due to the presence of the profiled groove 15 at this time directed parallel to the direction of movement of the plunger 6, the rotation of the cam 13 stops. The force from the actuator 7 through the end of the plunger 6 is transmitted to the end of the rack rod 11, causing the latter to move, turning the axis of the locking disk 8 and the shutter gate 2 to the position in which they are located along the axis of the housing I (the "Open" position). When returning to the original position, the force from the actuator 7, by moving the plunger 6 through the cam 13, which with its shoulder 14 interacts with the stop 12, simultaneously causes the lath shaft 11 to move (to the left side according to the diagram). After turning the locking disc 8 to the initial position, the ledge 14 of the cam 13 leaves the engagement with the stop 12, and the plunger 6, continuing to move, moves away from the rack rod 11 by the value a, and takes the initial position. When the plunger travels in the range of magnitude a, the flow of fluid passing through the section where the shutter valve 2 is installed is minimal, since the locking disk 8 blocks the body 1. In the initial position of the shutter valve 2, due to the interaction of the seal 3 with the surface of the body 1, the entire flow fluid passing through the gaps between the housing 1 and the locking disc 8. The technical and economic efficiency of the invention is to increase the reliability of the device. Claim device The locking device, in the case of which on the rotary axis connected to the drive by means of the plunger, is installed a disk flap, characterized in that, in order to increase reliability, it is equipped with an elliptical swivel locking disc mounted in the case successively to the flap on the rotary axis shifted relative to the longitudinal axis of the housing and equipped with a plunger installed coaxially with the brush on which the stop is made, with the cam hinged on the plunger with a ledge cooperating with the cn rod end, and a profiled groove, and a guide roller fixed in the cam groove is rigidly fixed on the body. Sources of information taken into account in the examination 1.Patent of France No. 1334387, cl. F 16 K, published. 1968.

2. Gas actuators model GD and GH for ball, conical and throttle valves that rotate 90 °. Prospectus of the company "ISW (Japan). M., Sokolniki, “Neftegazexpo, 1979, but bru (prototype).