JPH0246380A - 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-absorbing member 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 absorbing member 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 vibrations in gas control valves such as gas governors and proportional control valves.

(Prior Art and Problems) In gas control valves such as gas governors and proportional control valves, their constituent elements such as vessels, diaphragms, valve bodies, adjustment springs, moving coils, and moving magnets are vibrating systems. , so when certain conditions of gas pressure and flow rate are met, it 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 individual control valves in advance so that such resonance will not occur during normal use, and to prevent such resonance from occurring, it is difficult to This requires trial and error, requires a great deal of effort, time, and cost, and it is also difficult to take countermeasures when it occurs.

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,
A valve body 5 is provided on the valve chamber 2 side, and a valve body 5 is provided on the control chamber 3 side,
A vibration absorbing member 8 is interposed at an appropriate position between the diaphragm 4 and the adjusting screw 6 in a gas regulating valve in which an adjusting spring 7 is provided between the adjusting screw 6.

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, which has a valve body 5 on the valve chamber 2 side and a moving coil 9 on the control chamber 3 side, a vibration absorbing member 8 is interposed at a suitable position between the diaphragm 4 and the moving coil 9. It is something.

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, a vibration absorbing member 8 is interposed at a suitable position between the diaphragm 4 and the moving magnet 10. It is something.

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

First, the gas control valve A moves the valve body 5 by the movement of the diaphragm 4 according to the supply pressure of gas introduced from the gas port 11, and changes the gap with the valve seat 12 to adjust the flow rate and pressure. 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 adjusting screw 6 via an adjusting spring 7.

Therefore, in a state where the vibration absorbing member 8 is not interposed, the vibration system including the diaphragm 4, the piece 5, and the adjustment spring 7 is able to adjust the pressure and flow rate of a certain gas within the normal operating range of the gas equipment being used. In the case of resonance and vibration, if a vibration absorbing member 8 is interposed between the diaphragm 4 and the adjustment screw 6, a part or most of the vibration energy is absorbed by the vibration absorbing member 8, suppressing the vibration. be able to. The vibration absorbing member 8 can be composed of rubber, a dashpot, etc., and this vibration absorbing member 8 is made of ¥Af as shown in the example.
[5] In addition to being connected in series with the spring 7, it may also be connected in parallel.

Next, the gas control valve B applies a control current to the moving coil 9 to cause it to move relative to the permanent magnet 14 on the body 1 side, thereby moving the valve body 5 to close the gap with the valve seat 12. The gas is supplied from the gas outlet 13 by changing the flow rate and pressure.

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 absorbing member 8 between the moving coil 9 and the diaphragm 4 to absorb a part or most of the vibration energy.

Next, the gas control valve C controls the coil 15 on the vessel body 1 side. a
The moving magnet 10 is moved by flowing the gas zi, and the valve body 5 is thus moved to change the gap between the valve seat 12 and the flow rate and pressure to be 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
By interposing a vibration absorbing member 8 between the diaphragm 4 and the diaphragm 4, it is possible to suppress photographing by absorbing a part or most of the vibration energy.

In addition, in the embodiments shown in FIGS. 2 and 3, reference numerals 16 and 17 are used.
These are an outer cylinder and an inner cylinder, respectively, for interposing the vibration absorbing member 8, but the structure for interposing the vibration absorbing member 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, in which a vibration system including components such as a diaphragm, a valve body, a one-bar spring, a moving coil, a moving magnet, etc. Even if the gas Ia device to be used resonates and vibrates at a certain gas pressure or flow rate within the normal usage range, a part or most of the vibration energy can be absorbed by interposing a vibration absorbing member. This has the effect of easily suppressing vibrations, thereby suppressing noise, preventing shortening of component life, 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 absorbing member, 9...
・Moving coil, 10... Moving magnet, 11... Gas inlet, 12... Valve seat, 13...
Gas outlet, 14... Permanent magnet, 15... Coil, 1
6...Outer cylinder, 17...Inner cylinder.

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 suppression mechanism for a gas control valve, characterized in that a vibration absorbing member is interposed at a suitable position between the diaphragm and the adjustment 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 having a vibration absorbing member inserted at an appropriate 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 having a vibration absorbing member inserted at an appropriate location.