JPH0246379A - Vibration suppressing mechanism for gas regulator valve - Google Patents

Abstract

PURPOSE:To suppress vibration and noise and extend the life of constituting elements by inserting a vibration-proof spring between the diaphragm of a gas regulator valve such as a proportional control valve and a vibration system. CONSTITUTION:A device body 1 is partitioned by a diaphragm 4 into a valve chamber 2 and an adjusting chamber 3. A valve plug 5 is provided in the valve chamber 2, a vibration system such as an adjusting spring 7 and an adjusting screw 6 is provided on the adjusting chamber 3 side. A vibration-proof spring 8 is inserted between the diaphragm 4 and the adjusting spring 7. A moving coil and a moving magnet can be used for the vibration system in addition to the adjusting spring 7.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a mechanism for suppressing imaging in a gas control valve such as a gas governor or a proportional control valve.

(Prior art and its problems) In gas control valves such as gas governors and proportional control valves, diaphragms, valve bodies, adjustment springs,
Components such as a moving coil and a moving magnet constitute a vibration system, so when certain conditions of gas pressure and flow rate are met, the system resonates and vibrates at its natural frequency. If the pressure and flow rate conditions at which resonance occurs are within the normal use range, resonance will occur during normal use, becoming a source of noise and shortening the lifespan of components. There are inconveniences such as causing problems and making control difficult.

It is difficult to theoretically design and manufacture each control valve in advance so that such resonance does not occur during normal use, and it is difficult to suppress its occurrence.

The system required individual trial and error for each mode of use, which required a great deal of effort, time, and cost, and it was also difficult to take countermeasures in the event that it occurred.

The present invention aims to solve the above problems.

(Means for Solving the Problems) The structure of the present invention will be explained with reference to FIGS. 1 into a valve chamber 2 and a control chamber 3,
In the gas 11-section valve A, which has a valve body 5 on the valve chamber 2 side and an adjustment spring 7 between it and the adjustment screw 6 on the adjustment chamber 3 side, the diaphragm 4 and the adjustment screw 6 are located at an appropriate position. An anti-camera spring 8 is interposed therein.

Next, the mechanism described in item 2 includes a diaphragm 4 that partitions the container body 1 into a valve chamber 2 and a control chamber 3.
In the gas control valve B in which a valve body 5 is provided on the valve chamber 2 side and a moving coil 9 is provided on the control chamber 3 side, a vibration isolating spring 8 is interposed at a suitable position between the diaphragm 4 and the moving coil 9. It is equipped.

Next, the mechanism described in item 3 includes: a diaphragm 4 that partitions the vessel body 1 into a valve chamber 2 and a control chamber 3;
In the gas control valve C, which has a valve body 5 on the valve chamber 2 side and a moving magnet 10 on the control chamber 3 side, the diaphragm 4 and the moving magnet 10
A vibration isolating spring 8 is interposed at a suitable location between the two.

(Actions and Examples) The operation of the mechanism of the present invention will be explained with reference to examples.

First, the gas control valve △ moves the valve body 5 by the movement of the diaphragm 4 according to the gas supply volume introduced from the gas port 11, changes the gap with the valve seat 12, and adjusts the flow rate and pressure to the X1 node. This is a gas governor that supplies gas at a constant pressure from the gas outlet 13, and the gas supply pressure from the gas outlet 13 is changed by an adjustment screw 6 via an adjustment spring 7.

Therefore, in a state where the vibration isolating spring 8 is not installed, the vibration system including the diaphragm 4, the valve body 5, and the adjustment spring 7 operates at a certain gas pressure within the normal operating range of the gas appliance. If vibration occurs due to resonance at a certain flow rate, if a vibration isolating spring 8 is interposed between the diaphragm 4 and the adjustment screw 6, the overall spring constant and If
Since i changes, the vibration system can be moved away from resonance, that is, vibration can be suppressed.

The vibration isolation spring 8 may be connected in parallel to the adjustment spring 7 instead of being connected in series with the adjustment spring 7 as shown in the illustrated example.

Next, the gas control valve B controls the moving coil 9.
A current is applied to move the valve body 5 relative to the permanent magnet 14 on the side of the vessel 1, thereby moving the valve body 5 and changing the gap between it and the valve seat 12, adjusting the flow rate and pressure, and controlling the gas outlet 1.
It is supplied from 3.

Even in such a configuration, if the vibration system including the diaphragm 4, valve body 5, and moving coil 9 resonates and vibrates at a certain gas pressure or flow rate within the normal usage range of the gas equipment in use. In this case, vibration can be suppressed by interposing a vibration isolating spring 8 between the moving coil 9 and the diaphragm 4 and changing the overall spring constant and weight to move the vibration system away from resonance. .

Next, the gas control valve C sends a control current to the coil 15 on the side of the device body 1 to move the moving magnet 10, and thus moves the valve body 5 to change the gap between the valve seat 12 and the flow rate and pressure. The gas is adjusted and supplied from the gas outlet 13.

Even in such a configuration, if the vibration system including the diaphragm 4, the valve body 5, and the moving magnet 10 resonates and vibrates at a certain gas pressure or flow rate within the normal usage range of the gas appliance in use. The moving coil 9
An anti-vibration spring 8 is interposed between the diaphragm 4 and the diaphragm 4,
Vibration can be suppressed by changing the spring constant and weight as a rest to move the vibration system away from resonance.

In addition, in the embodiments shown in FIGS. 2 and 3, reference numerals 16 and 17 are used.
are an outer cylinder and an inner cylinder, respectively, for interposing the vibration isolating spring 8, but the structure for interposing the vibration isolating spring 8 is appropriate.

(Effects of the Invention) As described above, the present invention provides a gas control valve such as a gas governor or a proportional control valve with an imaging system including components such as a diaphragm, a valve body, a DHIiT spring, a moving coil, and a mood magnet. However, even if the gas equipment in use resonates and vibrates at a certain gas pressure or R1 within the normal operating range, vibration can be suppressed by inserting an anti-fouling spring to move the system away from resonance. This has the effect of easily suppressing noise, preventing reduction in the life of components, and enabling good control.

[Brief explanation of the drawing]

1 to 3 are schematic explanatory diagrams showing embodiments of the configuration of the present invention. Code 1... Instrument body, 2... Valve chamber, 3... Control chamber, 4
... diaphragm, 5 ... valve body, 6 ... adjustment screw, 7 ... adjustment spring, 8 ... vibration isolation spring, 9 ... moving coil, 10 ... moving magnet, 11 ...Gas inlet, 12...Valve seat part, 1
3... Gas outlet, 14... Permanent magnet, 15... Coil, 16... Outer cylinder, 17... Inner cylinder. Figure 1

Claims (3)

[Claims] (1) In a gas control valve in which a valve body is provided on the valve chamber side of a diaphragm that partitions the device body into a valve chamber and a control chamber, and an adjustment spring is provided between the adjustment screw and the control chamber side,
A vibration suppressing mechanism for a gas control valve, characterized in that a vibration isolating spring is interposed at a suitable position between the diaphragm and the adjusting screw. (2) In a gas control valve in which a valve body is provided on the valve chamber side of a diaphragm that partitions the device body into a valve chamber and a control chamber, and a moving coil is provided on the control chamber side, there is a gap between the diaphragm and the moving coil. A vibration suppression mechanism for a gas control valve characterized by a vibration-proofing spring inserted at a suitable location. (3) In a gas control valve in which a valve body is provided on the valve chamber side of a diaphragm that partitions the device body into a valve chamber and a control chamber, and a moving magnet is provided on the control chamber side, there is a gap between the diaphragm and the moving magnet. A vibration suppression mechanism for a gas control valve characterized by a vibration-proofing spring inserted at a suitable location.