SU717470A2

SU717470A2 - Screw-type adjustable throttle

Info

Publication number: SU717470A2
Application number: SU782659495A
Authority: SU
Inventors: Юрий Николаевич Бондарь; Людмила Андреевна Бондарь
Original assignee: Предприятие П/Я А-3103
Priority date: 1978-09-06
Filing date: 1978-09-06
Publication date: 1980-02-25

Description

Изобретение относится к арматуростроению.The invention relates to valve manufacturing.

По основному авт. св. № 594388, известен винтовой регулируемый дроссель, выполненный в виде винтовой пары, причем наружный диаметр винта выполнен ⁵переменным (11 .According to the main author. St. No. 594388, a screw adjustable throttle is known, made in the form of a screw pair, and the outer diameter of the screw is made ⁵ variable (11.

Недостатком известного дросселя является небольшой диапазон регулирования расхода.A disadvantage of the known throttle is a small range of flow control.

Целью изобретения является расширение диапазона работы. 'The aim of the invention is to expand the range of work. ''

Достигается она тем, что наружный диаметр резьбы винта выполнен эксцентричным по отношению к его оси.It is achieved by the fact that the outer diameter of the screw thread is made eccentric with respect to its axis.

На фиг. 1 показан описываемый дрос- ¹⁵сель; на фиг. 2 - разрез А-А на фиг. 1.In FIG. 1 shows the described dros- ¹⁵ sel; in FIG. 2 is a section AA in FIG. 1.

В корпусе 1 с винтовой нарезкой размешен винт 2, причем наружный диаметр резьбы винта, выполнен эксцентрично по отношению к его оси.A screw 2 is placed in the housing 1 with screw thread, and the outer diameter of the screw thread is made eccentric with respect to its axis.

Винтовая нарезка корпуса и винта образуют винтовой дросселирующий канал 3. Так как ось резьбы винта смещена отно2 сительно оси тела винта, то в дросселирующем канале имеется ряд местных сужений и расширений потока жидкости, поэтому сопротивление дросселя будет обуславливаться как потерями давления по длине, так и дополнительными потерями давления в. местных сопротивлениях, т.е. многократным сужением и расширением потока жидкости. Длина дросселирующего канала и число местных сопротивлений регулируется путем ввинчивания или вывинчивания винта 2.Screw cutting of the body and screw form a screw throttling channel 3. Since the screw thread axis is offset relative to the axis of the screw body, there are a number of local narrowing and expansion of the fluid flow in the throttling channel, therefore the throttle resistance will be caused by both pressure losses along the length and additional pressure loss c. local resistances, i.e. multiple narrowing and expansion of the fluid flow. The length of the throttling channel and the number of local resistances are adjusted by screwing in or out screw 2.

Claims

I The invention relates to a valve. On the main author. St. No. 594388, known screw adjustable DRBS; -. mudflow, curled in the form of a screw pair, with the outer diameter of the screw made of variable SC. The disadvantage of the known throttle is a small range of flow control. The aim of the invention is to expand the range of operation. It is achieved by the fact that the screw thread diameter is made eccentric with respect to its axis. FIG. 1 shows the described Drsusesel; on (}) 2 - section A-A on f. I. In case 1 with screw thread, screw 2 is placed, with the outer two-thread of the screw thread being eccentric with respect to its axis. The screw thread of the screw body forms a screw throttling channel 3. Since the screw thread axis is displaced relative to the screw body axis, the throttling channel has a number of local constrictions and flow extensions, and the drag resistance will be caused by both pressure losses and pressure loss c. local resistances, i.e. multiple contraction and expansion of fluid flow. The length of the throttling channel and the number of local resistances are adjusted by screwing in or screwing in the screw.

2. Invention Formula Coil Throttle, ed. St. No. 5943138, which is also distinguished by the fact that, in order to expand the range of operation, the outer diameter of the screw thread is eccentric with respect to its axis. Sources of information taken into account in the examination 1. USSR Author's Certificate No. 594388, CL. F 16 K 47/12, 1973 (prototype).

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