DE974511C - Control regulator for gas pressure regulator - Google Patents

Description

ISSUED JANUARY 26, 1961

M20898 XI4c

Josef Gottfried, Kassel

has been named as the inventor

Control regulator for gas pressure regulator

Patent application published October 4, 1956

Patent issued January 5, 1961

The invention relates to a control regulator for gas pressure regulators with one of the downstream pressure pressurized regulating membrane, with a valve controlled by this membrane regulating membrane Regulation of the control gas flow to the membrane chamber of the main regulator and with one of the downstream pressure controlled, externally adjustable relief valve, via the control gas from the membrane chamber the main regulator can flow off through the control gas pressure line. Control regulator of this fundamental Design are known.

The invention creates an improvement in control regulators of this type, through which in particular a more favorable operating behavior of the main controller can be achieved. According to the invention is the control regulator of the basic type described above, characterized in that for Adjustment of the passage cross-section for the inflow of the control gas flow to the control gas pressure line of the main regulator behind the control valve ao a lying within the control regulator, while the operation independently of the setting of the relief valve externally adjustable throttle spindle is provided. This results in a deceleration or an acceleration as required of the control gas flow to the main regulator is reached,

009 691/5

whereby unwanted vibrations due to rapid pressure surges due to sudden changes in volume be avoided.

According to a further feature of the invention, this occurs with increasing downstream pressure through the Relief valve control gas flowing out of the membrane chamber of the main regulator into an outflow chamber of the control paddle, that of the impulse space of the control pod through a false floor is separated. This means that the main regulator cannot be influenced by this amount of gas take place. Further details and features of the invention emerge from the drawing, in 'the an example embodiment is explained in more detail. It shows

Fig. Ι a vertical section through the control regulator,

Fig. 2 is a section along line AA and Fig. 3 is a section along line BB of Fig. 1. Fig. 4 shows a simplified representation of the gas pressure regulator with the connections of the lines a>, b, c, d going to the control regulator. These lines and their connections are also denoted by the reference letters a, b, c, d in FIGS.

If there is a change in the downstream pressure in the outlet line 1 of the main regulator 2 (Fig. 4), this impulse is transmitted to the control membrane 5 of the control regulator f> via the impulse line d. The back pressure is set by tensioning or relieving the spring 7 by means of a screw cap 8 (Fig. 1).

If the downstream pressure falls in the extraction line 1 and thus also in the chamber 9 of the control regulator 6, the membrane 5 is moved downward by the spring 7 and the closing body 10 is pressed off by the control pin 12 from the nozzle ir of the control valve. As a result, the auxiliary pressure generated in a throttle stage 13 can pass from space 14 into space 15. The throttle stage 13 is fed by the pre-pressure of the main regulator 2 via the line α (Fig. 2).

The pressure occurring in space 15, the so-called control pressure, flows via line b into space 16 above membrane 3 of the main regulator and opens control valve 4 via linkage 17 from the space 18, which is arranged in front of the line b , separated by a control spindle 19, which can be operated by a threaded pin 20 from the outside. Corresponding! the set overflow cross-section between the spaces 16 or 18 on the one hand and 15 on the other hand, the opening speed of the control valve 4 can be slowed down or accelerated as desired.

The amount of control gas overflowing from space 15 into space 18 does not flow completely to space 16 above membrane 3 of the main regulator, but instead a partial flow flows through a nozzle 21 via line c into back pressure space ι of main regulator 2.

With increasing back pressure in the outlet connection ι this main regulator 2, the amount of control gas in the space 16 to allow the control valve 4 a closing movement, must be removed and at the same time the inflow of further control gas be prevented. Since the rising back pressure is transferred to the diaphragm 5 of the control regulator 6 via the line d, its diaphragm 5 is pressed upwards against the spring 7. As a result, the control pin 12 with the shut-off body 10 is pulled upwards and the nozzle 11 of the control valve is closed off by the shut-off body 10, so that a further inflow of control gas to the main regulator 2 is no longer possible. During this process, the sealing cone 22 is simultaneously lifted from the relief nozzle 21 so that the control gas can flow unhindered from the membrane chamber 16 of the main regulator 2 via the relief nozzle 21 into the overflow chamber 25 and can flow out through the line c into the line 1 of the main regulator. The overflow space 25 is separated from the pulse space 9 of the control regulator 6 by an intermediate floor 26. This separation is advantageous in order to supply the diaphragm 5 of the control regulator with the actual downstream pressure which is not influenced by the control gas flowing out.

If the closing movement of the control valve 4 of the main controller z. B. be accelerated so the cross section of the relief valve can be reduced by lowering the nozzle 21 by means of a worm gear 23 can be enlarged. The setting of the cross section of the relief valve is also carried out from the outside during operation by means of a threaded pin 24.

In the embodiment shown in Fig. 1, the closing body 10 of the control valve firmly connected to the control pin 12. To prevent the closure body 10 from being torn off from the control pin 12 to prevent, the control pin 12 is with the membrane 5 of the control regulator 6 by a spring clutch 28 connected to springs 27 and 29.

Claims (3)

Claims ·. ^1o5 i. Control regulator for gas pressure regulator with a regulating diaphragm acted upon by the downstream pressure, with a valve controlled by this regulating diaphragm for regulating the control gas flow to the diaphragm chamber of the main regulator and. with an externally adjustable relief valve controlled by the downstream pressure, via which control gas can flow out of the membrane chamber of the main regulator through the control gas pressure line, characterized in that for adjusting the passage cross-section for the inflow of the control gas flow to the control gas pressure line (b) of the main regulator behind the control valve (10 , 11) a throttle spindle (19) is provided, which lies within the control iao regulator and can be adjusted from the outside during operation independently of the setting of the relief valve (21, 22). 2. Control regulator according to claim 1, characterized in that the increasing Back pressure through the relief valve (21, 22) from the diaphragm chamber (16) of the main regulator Outflowing control gas enters an outflow space (25) of the control regulator, which is separated from the pulse space (9) of the control regulator by an intermediate floor (26). 3. Control regulator according to claim i, wherein the maximum gap cross-section of the relief valve by raising or lowering the \% itilsitz containing nozzle body (21) adjustable is, characterized in that for adjusting the nozzle body (21) one on it attacking worm drive (23, 24) is used. Considered publications: German Patent Specifications No. 522 665, 645 o $ 990. 1 sheet of drawings © 609 656/6 9.56 (009 691/5 1.61)