SU945563A1

SU945563A1 - Safety valve

Info

Publication number: SU945563A1
Application number: SU802978970A
Authority: SU
Inventors: Генрих Георгиевич Жибуртович
Original assignee: Предприятие П/Я А-7899
Priority date: 1980-09-02
Filing date: 1980-09-02
Publication date: 1982-07-23

Description

(5t) ПРЕДОХРАНИТЕЛЬНЫЙ КЛАПАН(5t) SAFETY VALVE

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Изобретение относитс к арматуростроению и предназначено дл защиты систем от повышени в них давлени сверх допустимого.The invention relates to a valve industry and is intended to protect systems from an increase in pressure in them beyond the allowable one.

Известны предохранительные клала-, ны, снабженные приводом принудительного подрыва запорного органа с целью устранени прикипани или залипани его к седлу СОНедостатком такого клапана вл етс то, что он закрываетс пружиной только после сброса давлени в системе до давлени его обратной посадки , которое составл ет от 70 до 90 величины рабочего давлени . При этом происходит значительный по объему сброс рабочей среды из системы, что приводит к значительным ее потер м.Safety valves are known that are provided with a drive for forcibly undermining the closure member in order to eliminate sticking or sticking it to the saddle. The desiccant of such a valve is that it closes with a spring only after pressure has been released in the system to its backward pressure which is from 70 up to 90 times the working pressure. In this case, a significant amount of working medium discharge from the system occurs, which leads to a significant loss of it.

Наиболее близким к изобретению по технической сущности вл етс предохранительный клапан, в корпусе которого к седлу упруго поджат запорный орган, кинематически св занный своим штоком с подпружиненным сердечником электромагнита привода принудительного подрыва 2,The closest to the invention to the technical essence is a safety valve, in the case of which a stop valve, which is kinematically connected by its stem to the spring-loaded core of the electromagnet of the forced exploding drive 2, is elastically tightened to the saddle

Недостатком известного устройства вл етс относительно большой промежуток времени между открытием и последующим закрытием запорного органа двум последовательно срабатывающими при водамиj что также приводит к значительным потер м рабочей среды.A disadvantage of the known device is the relatively large time interval between the opening and the subsequent closing of the closure member by two successively activated waters, which also leads to significant losses of the working medium.

Целью изобретени вл етс уменьшение потерь рабочей среды при подрыве запорного органа.The aim of the invention is to reduce the loss of the working medium when the closure member is undermined.

Поставленна цель достигаетс тем, что в штоке выполнен паз, сердечник снабжен двум подпружиненными упорами и расположен в пазу штока перпендикул рно его оси, причем упоры размещены на свободной части сердечника диаметрально-противоположно по оси штока со смещением нижнего упора относительно верхнего всторону свободного конца.The goal is achieved by the fact that a groove is made in the rod, the core is provided with two spring-loaded stops and is located in the groove of the rod perpendicular to its axis, with the stops placed on the free part of the core diametrically opposite to the axis of the rod with the lower end offset from the upper side of the free end.

Claims

FIG. 1 shows a valve, a general view; in fig. 2 - drive forced undermining. : in the device to the saddle 1 of the valve body 2 is spring-loaded 3 the locking organ 4 connected to the rod 5. Through the groove 6 of the rod 5 between the stop roller 7 and the stop 8 passes the core 9 of the electromagnet 10. 8 core 9 is set at an angle of the rod 5 rod spring-loaded stops 11 and 12, placed in pockets 13 and 1. The core 3 is extended by the spring 15 from the winding of the electromagnet 10, the stop 8 is pressed by the spring. When the valve is activated directly from the pressure of the medium with increasing pressure, the locking member k is pressed out of the saddle 1- and the pressure drops P ed valve. After the pressure is released, the spring 3 closes the valve. To force the valve to blow up, the electromagnet 10 is turned on, which draws the core 9. At the forward movement of the core 9, first the upper stop 11 presses its inclined surface onto the stop roller 7 and undermines the valve body C from the saddle 1 through the rod 5. from the roller 7, acting on the support 11, the perpendicular p-30 is directed but its axis, i.e. direction of movement, and the stop 11 remains fixed. Then, the lower stop 12 slides over the raised stem 5, which, through the stop 8, the spring 16 and the stem 5, places the porous organ 4 back onto the saddle 1. The medium is discharged through the valve. It stops. The spring 16 with the further movement of the stop 12 through the window 6 is compressed and ensures the passage of the core 9 through the window after closing the valve. In the interaction of the stop 12 with the support 8, the reaction force from the side of the support 8 acts on the support 12 in the direction of the 3 research institutes, perpendicular to its axis, and it remains stationary. After disconnecting the power from the electromagnet 10, the spring 15 pushes the core 9 to its original position. When the stops 12 and 11 pass through the groove 6, the reaction forces from the stops 8 and the roller 7 push the stops 12 and 11 into the pockets 1A and 13. In this case, the force on the rod practically does not occur. After the passage of the groove 6, the lugs 11 and 12 resiliently return to the original C extended; position. Thus, in one straight stroke of the core of the electromagnet, the valve is opened and closed sequentially, which significantly reduces the time the valve is in the open position and, consequently. reduces the loss of working environment. Claims of the invention. A safety valve, in the case of which a locking organ, kinematically connected by its stem to a spring-loaded electromagnet core of a forced-release actuator, is elastically tightened to the seat, and with the aim of reducing the loss of the working medium during blasting, the core is provided with two spring-loaded stops and is located in the groove of the rod perpendicular to its axis, and the stops are placed on the free part of the core diametrically opposite to the axis of the rod with the displacement of the lower pack pa relative to the top toward the free end. Sources of information taken into account in the examination. one . Kondratieva T.F. Safety valves. L., 1976, p. , fig.66.

2. Gurevich D.F. Armature of nuclear power plants. M., 1968, p. 116, fig. 5.2;

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