DE7001833U - BALL SEAT VALVE FOR PIPELINES - Google Patents

Description

seat valve for pipelines

I> he innovation concerns a ball seat valve for pipelines, its rotatable, provided with an opening approximately corresponding to the diameter of the adjoining "pipeline" Valve ball slightly on one side via an annular "seal" is supported against the valve housing. With these valves, the sealing rings must be in the closed state of the Valve result in an absolutely tight seal at the prevailing pressure of the medium, even with any "'empera + uruntersoMeden. D ^ ts can be achieved with sealing rings made of elastic material. Apart from the wear-sensitive wedge the material is temperature-dependent, which affects the sealing ability over time and a results in irregular torque during operation.

The task of the innovation is to address the deficiencies described Turn off ball seat valves of the type described, which is achieved by resiliently counteracting at least one ring seal to support the valve body. However, this is not enough because in most cases the use of conventional springs would endanger their material from the medium to be passed through. For this C-round is provided according to the innovation, the Spring in itself against the one flowing through the valve To arrange the medium-sealed space of the valve housing. Of the Rinsraum is open towards the valve ball and also contains the direction of the ring to be cushioned.

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"Hie neiiartie · arranged ^ eder absorbs the forces arising from the pressure of the medium, which act on the \ rentikure ¹ η in the closed condition. It is advisable, di" ^? Either pretension a little above the even nominal pressure of the system. Furthermore, the spring assumes the temoeratii rabhänsH fen ^ chvankun ^ s the Di chtun ^ smaße, so that ¹ holdings of ^FFVI eK ^ö friction torques up to e ^ ne vernaehl äsnip-bare Soh ^ ankunf remain constant at the · valve Vu ^ e. Hereby is + in the "Operating a ^ ^ rI eiohmäßi it torque within a ^rT 'emneraturbereiches of et-.va - 00 ° C to + 800 ° 0 pewäh" * ·! ei Rt ° t. Since the spring-loaded sealing ring is located in the lüngraum containing the springs, this seal also serves to seal the "peder chamber, so that the spring does not come into contact with the medium to be conveyed in any operating state."

One is transported back to the day by the new kind of ano, To use sealing materials that are inelastic and nevertheless one can see relatively large differences in temperature without adverse effects on operational safety of the valve. At very high temperatures it is advisable to select a suitable material pairing in order to seizure on the contact surfaces of the valve ball and Prevent seal.

In the drawing, an embodiment of the innovation is shown and twar zisren:

1 shows a vertical section through a valve according to the invention in the open state:

FIG. 2 shows a section through the valve of FIG. 1 according to Tinie IT-II in the closed state;

i ^ ig. 3 shows a partial section in the manner of FIG. 1 of a particular one Embodiment.

The valve 1 e-housing 1 is made up of the two provided with flanges 2 Parts 3 and 4 assembled by the screw connections. 5 are connected to each other, the valve ball 6

Claims (4)

rait the cylindrical opening 7 is rotated by the in the housing part 3 mounted pin 8 adjusted. It is supported on the one hand against the valve housing via the fixed Sealing ring 9 and on the other hand through the spring loaded ring 11. Between the sealing ring 11 and the ^ eder is a pressure ring switched on and the three parts are all in one Ringreum 13 of the housing part it 4. The Ringrauru becomes with the described example by an inwardly open recess 14 formed, which is formed on the inside by a sleeve 15 is closed, so that the aforementioned annular space 13 is formed. In the embodiment of FIG. 3 it is illustrated ₇ that the spring 10 loading the ring seal 11 also serves to tension the housing gland 16. Here, the stuffing box 16 is loaded on one side by the pressure ring 17, which is formed by the sleeve 18, which has an inwardly directed flange against which the spring 10 is supported. PROTECTION CLAIMS: Ball seat valve for pipelines whose rotatable valve ball , provided with an opening approximately corresponding to the diameter of the adjacent pipeline, is supported at least on one side via an annular seal against the valve housing. characterized in that at least one ring seal (11) is supported with the interposition of a spring (10) which in a space (13) 'de-e Valve housing 3 (1) is arranged. Valve according to Claim 1 _f, characterized in that the spring (10) is arranged in an annular space (13) which is open towards the valve ball (6) and which also contains the spring-loaded annular seal (11). Valve according to Claim 2, characterized in that it is sandwiched in the annular space (13) the spring (10) and the seal (11) is a pressure ring (12). Valve according to claim 2, characterized in that that the annular space (13) through an inwardly open recess (14) in the valve housing part (4) is formed on the inside by a bushing (15) is closed. Valve according to one of the preceding claims, characterized in that at least the spring-loaded sealing ring (11) consists of an inelastic material. Valve according to one of the preceding claims, characterized in that the the ring seal (11) loaded spring (10) is also used to tension the housing gland (16). Valve according to Claim 6, characterized in that the pressure ring (17) of the stuffing box (16) is designed as a sleeve '(18) with an inwardly directed flange (19), stimulate the spring (10) is supported.