DE2054638C3 - Throttle valve - Google Patents

Description

single-stage relaxation. For gases and vapors to which the cross sections of the throttle points 11, 12 are reached,

their relaxation over a wide pressure range. The sleeves 7, 8 are expediently through a pin

however, multi-stage throttle devices are required 13 in their operational position so that they cannot rotate with de

are, such valves were therefore not connected to sleeve 4,
reversible. 60 As Fig. 3 shows, the Durchsiro-nkunaie

The invention is therefore based on the task of providing 5, 9, 10 in the various lo.hkreisebcnen

the valves of the type described at the outset have different cross-sections. This lets you see

to improve towards the fact that a multi-stage Ent valve characteristic vary. In the present case

voltage of the medium to be throttled takes place, it has been linearized. Likewise kö. .en each of μ> γ these throttle valves also for gases and vapors through flow ducts of and

to make reversible. be with a large cross-section.

This is achieved according to the invention in that the shut-off device is 6 mn

at least three such sleeves, pushed into one another, abdhd its conical surface on the valve seat 3

to the system. The shut-off element 6 is lifted from the seat 3 for the throttled flow a different number of throughflow channels 5 is still released in the stroke position. After flowing through of these channels 5, the medium experiences a first throttling in the throttling points Ii. In the Flow channels 9 can dam then experience a pressure drop in the throttle sections.

Depending on the height of the fade renz can also be other husbands.

Print difference is available

1 sheet of drawings

Claims (3)

sen are provided with radial Durchsirömkanäle, the throughflow channels of the middle claims: sleeve form expansion chambers. This means that several 1. Throttle valve with a valve seat body, in 5 throttle points and simultaneously between these the coaxial extension of which two tension chambers that are extended into one another · Provide pushed sleeves with in several planes so that the medium in the radial flow channels that are seen through, which flow channels of the sleeves e.ne multi-stage bntsj.an at the mutual contact surfaces of the sleeves. ..,
sen by partially covering throttle points ίο The invention provides for a further Mernmal form, are arranged, for controlling the that the valve seat remote end of the sleeves rre ·. m through-flow channels and the valve seat opening protrudes into the low-pressure chamber of the valve, the piston-shaped shut-off element being adjustable in a stroke-movable manner into the shut-off element so that it can be pulled out of the sleeves on the inner sleeve, thereby being arranged.
characterized that at least three sol- J ₅ This means that large sleeves (4,7,8), which tend to be pushed into one another during start-up procedures, with amounts of condensate occurring in steam systems, radial through-flow channels (5,9, 10) can be quickly removed. Furthermore, the Moghen are, whereby the through-flow channels (9) form the possibility of blowing out larger impurities that may accumulate in the middle sleeve) (7) expansion chambers of the inner sleeve. give ao. 2. Throttle valve according to claim I, thereby according to the invention also the HuI-Kennzeichnc can! that the valve seatfcrne end of the sen via a gear in such a way with the shut-off element Sleeves (4,7,8) can be freely connected to the low-pressure chamber of the valve, depending on the Hubbc valve protrudes, with the shut-off element (6) moving the shut-off element causing a rotary movement is arranged to be pulled out of the sleeve. 25 drove. This results in a stroke-dependent change 3. Throttle valve according to claim 1 and 2. da- the Drosselstellenquerschn, c and their expansion marked, Jaß the sleeves (4,7,8) achievement ratio. via a transmission in such a way with the shut-off element In the drawing is an exemplary embodiment of the (6) are in operative connection that they are shown in dependent invention thought. It shows
ability of the stroke of the shut-off valve (6) 30 Fig. I a throttle valve in section,
perform a rotary movement. F 1 g. 2 the sleeves of the valve from FIG. 1 in the cross cut and F i g. 3 a partial development of the sleeves.
A valve seat body 2 is located in a valve housing 1 35 with a valve seat 3 and a sleeve 4 provided in a coaxial extension to this. The latter is provided with radial flow channels S in different hole circle planes, which are both cylindrical and expand in the direction of flow. The invention relates to a throttle valve with a 40 ternd can be designed. 2 in a piston-shaped valve seat body, in the coaxial extension of which the shut-off element 6 is liftable in the sleeve 4, two nested sleeves with adjustable in several positions and can for special purposes be pulled out completely from planes provided radial flow channels :, of the sleeve 4,
which on the mutual contact surfaces of the On the sleeve 4 are further sleeves 7 and 8, even Sleeves by partially concealing Drcsselsiell 45 if having radial flow channels 9 and 10, are arranged, being pushed on to control the. The sleeves 4, 7 and 8, with their throughflow channels and the valve seat opening, an anbeni-shaped shut-off element offset from one another in such a way that the sequentially connected through-through sleeve is adjustable, are arranged so that they can move. Flow channels 5,9 and 10 throttling points 11 and 12 The valves of this type are characterized by an ia form. Between the throttle points, the simple and space-saving design and a very flow-through channel 9 act as relaxation chambers for good, sensitive regulation. In addition, they are the medium to be throttled. still inexpensive to manufacture. However, this is learned from the different mutual relocations throttling medium in the known versions (Fig. 2 and 3) of the flow channels 5,9 and : A ru: iLAi λ ii: i ti: \: u ; ο in: l; l Pihalti i "i:" i: "u"; "" "q in,";