SU953321A1

SU953321A1 - Explosion valve

Info

Publication number: SU953321A1
Application number: SU813240317A
Authority: SU
Inventors: Виктор Федорович Дедешин
Original assignee: Предприятие П/Я В-2827
Priority date: 1981-01-28
Filing date: 1981-01-28
Publication date: 1982-08-23

Description

(54 } ВЗРЫВНОЙ КЛАПАН(54} EXPLOSIVE VALVE

Изобретение относитс к пиротехническим устройствам и предназначено дл перекрыти трубопровода с газом или жидкостью под высоким давлением..The invention relates to pyrotechnic devices and is intended to shut off a pipeline with gas or liquid under high pressure.

Известно пиротехническое устройство дл перекрыти трубопроводов высокого давлени , представл ющее собой корпус с входным и выходным отверсти ми, оси которых взаимно перпендикул рны. Внутри корпуса размещен запорный -орган в виде пустотелой пробки с конической посадочной поверхностью, причем седло корпуса выполнено также коническим . Пробка одним концом закреплена в корпусе на резьбе, а внутри нее размещен пирозар д. При срабатывании пиротехнического состава пробка срываетс с места своего креплени и перемещаетс к седлу, отсека поток газа в магистрали| 1 .A pyrotechnic device for shutting off high pressure pipelines is known, which is a housing with inlet and outlet openings whose axes are mutually perpendicular. Inside the body there is a stop valve - organ in the form of a hollow plug with a conical seating surface, and the body seat is also conical. The plug is fixed at the end with a threaded one end and a pyrozar is placed inside it. When the pyrotechnic composition is triggered, the plug breaks off from its mounting and moves to the saddle, the gas flow in the trunk | one .

Это запирающее устройство может с успехом использоватьс в различных магистрал х, не подверженных колебани м температуры. Дл магистралей , в которых после срабатывани устройства возможен его нагрев, это устройство оказываетс неработоспособным , так как при тепловомThis locking device can be successfully used in various lines not subject to temperature fluctuations. For lines in which heating is possible after the device has triggered, this device turns out to be inoperable, since during thermal

расширении корпуса силы трени между седлом и запорным органом fпробкой} уменьшаютс или полностью исчезают , что приводит к отжатию пробки от седла давлением газа, наход щегос в трубопроводе. . .the expansion of the body of friction between the seat and the stop valve f tube} decreases or completely disappears, which leads to squeezing the plug from the seat by the pressure of gas in the pipeline. . .

Наиболее близким по своей технической сущности к изобретению вл 10 етс взрывной клапан, содержащий корпус с тонкостенной гильзой, седло , установленный в гильзе запорный орган и цироприврд, расположенный снаружи тонкостенной гильзы, полость The closest in technical essence to the invention was an explosive valve, comprising a body with a thin-walled sleeve, a seat, a shut-off element installed in the sleeve, and a cyroprivre, located outside the thin-walled sleeve, a cavity

15 которой под запорным органом заполнена эластичным материалом. При срабатывании пиропривода тонкостенна гильза деформируетс , эластичный материал вытесн етс из ее по20 лости и перемещает запорный орган до контакта -его с ceдлoм 2J .15 which under the locking body filled with elastic material. When the actuator triggers, the thin-walled sleeve is deformed, the elastic material is displaced from its cavity and moves the locking member to contact it with the saddle 2J.

Однако при повышении температуры эластичный материал может деструктировать , плотность его уменьшаетс , However, as the temperature rises, the elastic material can destruct, its density decreases,

25 и первоначальное усилие поджати запорного органа к седлу падает. При наличии пульсации давлени в перекрываемой магистрали это может привести к разгерметизации клапана.25 and the initial effort of pressing the closure member against the saddle falls. If there is a pressure pulsation in the shut-off line, this may lead to a depressurization of the valve.

Claims

30 The aim of the invention is to increase the sealing tightness under high temperature conditions. This goal is achieved by the fact that inside the thin-walled sleeve there is installed a stacked glass case, the bottom of which is in contact with the elastic material, and an internal conical boring is made on the free end, the locking member is made in the form of a plug with a reverse cone and is fixed inside the yoke using a destructible element made in the form of a section of a cylindrical tube, the outer diameter of which is larger than the inner bottom of the yoke meter. FIG. 1 shows a longitudinal section explosion valve / in FIG. 2 Valve stop zone after actuating the actuator. The valve consists of a housing 1 with a bone sleeve 2, to which inlet 3 and outlet 4 pipelines are connected underneath (FIG. Output pipe 4 is connected to sleeve 5 by welding, and the sleeve is fixed in case 1 by means of an empty screw b The saddle 7 is formed at the free end of the sleeve 5. It is a section of a cylindrical tube. The inner cavity of the sleeve 2 is filled with elastic material 8, for example, fluoroplastic contacting with the stanewall 9, in which the locking member is sealed by means of a shear pin 10. 11, performed in the form of a plug with a reverse cone 1 The second cone 13 is centering. Fixing the holder 9 is carried out by means of an insert 14, at one end of which grooves are made, and on the other - a shoulder interacting with the holder 9. In the area of the sleeve 2 of the body 1 is fixed actuator 15 with an annular charge 16. The valve operates as follows: When actuating the actuator 15, the walls of the sleeve 2 are compressed and the elastic material 8 is displaced, which causes the clamp 19 with the locking element 11 to be twisted. The holder 9 deforms the shoulder of the insert 14 and mates with its vnut renney surface. At the moment of contact of the end face of the locking element 11 and the end face of the saddle 7. the cutting of the pin 10 occurs. With further movement of the holder 9, the entrapment element 11 abuts against its bottom (Fig. 2). At this time, the tapered bore of the yoke compresses the outside of the saddle 7, which leads to the fixing of the locking element 11 by tightly covering it with the material of the saddle. Thus, the disconnection of the inlet 3 and the outlet 4 pipelines is carried out. The proposed valve is able to maintain its tightness for a long time under conditions of elevated temperatures, as well as under conditions of temperature fluctuations. This is because the destruction of the elastic material does not affect the density of the joint between the seat and the locking element, which in this case is determined only by the degree of formation of the saddle and the tension between it and the sleeve. Claims of Invention An explosive valve, comprising a housing with a thin-walled sleeve, a seat, a closure member mounted in the sleeve, and a actuator, located outside the thin-walled sleeve, the cavity of which under the closure member is filled with an elastic material, in order to increase the tightness of the overlap in terms of temperature, Inside the thin-walled sleeve, a stacked cup holder is installed, the bottom of which is in contact with an elastic material, and an internal conical boring is made on the free-end, Full a plug reverse taper d and secured within cage when polzhzschi erodible element, and the seat is in the form of a cylindrical tube portion vneiny diameter larger than the inner diameter of the ferrule. Sources of information taken into account at. examination 1. US patent 3022793, cl. 137-68, 1962.

2. Authors certificate of the USSR 651165, cl. F 16 K 13/06, 1979. 16 FIG. 2 / f