JP3674783B2 - Gas pressure regulator - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a gas pressure regulator that is inserted between a liquefied petroleum gas filling container and a gas using device and adjusts the gas pressure to a predetermined value.
[0002]
[Prior art]
As shown in FIG. 3, in the conventional gas pressure regulator, a gas inlet 2 and a gas outlet 3 are provided in the regulator body 1, and an upper surface opening of the cavity 4 between the gas inlet 2 and the gas outlet 3. Is closed with a diaphragm 5, and a valve 8 provided at a gas inlet is opened and closed by an operating lever 7 connected to a main shaft 6 of the diaphragm 5, while a central cylindrical portion of a cover body 9 covering the upper surface opening of the regulator body 1. A compression coil spring 11 and an adjustment screw body 12 that press the diaphragm 5 are accommodated in 10, and a vent hole 14 is formed in the peripheral wall portion 13 of the cover body 9.
[0003]
Corresponding to the vertical movement of the diaphragm 5, air enters and exits the upper space of the diaphragm from the vent hole 14 of the cover body 9, but not only air but also rainwater and snowmelt water enter from the vent hole 14. However, it may accumulate on the upper surface side of the diaphragm 5.
[0004]
In order to ensure stable operation of the gas pressure regulator, it is obliged to periodically inspect the vent 14 for blockages. The inspection is performed by inserting a rod-shaped jig into the ventilation hole 14. In order to prevent the diaphragm 5 from being damaged by the inspection jig, the ventilation hole 14 is positioned at a certain level higher than the diaphragm 5. Is formed.
[0005]
Therefore, the volume of the space on the upper surface side of the diaphragm in which the intruding water stays increases, and the movement of the diaphragm 5 is deteriorated due to the weight load of the staying water. In severe cases, the diaphragm 5 may malfunction.
[0006]
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to provide a gas pressure regulator that can smoothly remove the water that has entered from the vent hole, and can stably operate the diaphragm by reducing the amount of accumulated water as much as possible.
[0007]
[Means for Solving the Problems]
Hereinafter, the present invention will be described with reference to the accompanying drawings. In the present invention, the regulator main body 1 is provided with a gas inlet 2 and a gas outlet 3, and the cavity 4 between the gas inlet 2 and the gas outlet 3 is provided. The upper surface opening is closed with a diaphragm 5, and a valve 8 provided at the gas inlet 2 is opened and closed by an operating lever 7 connected to the main shaft 6 of the diaphragm 5, while covering the upper surface opening of the regulator body 1. In the gas pressure regulator in which the compression coil spring 11 and the adjusting screw body 12 that press the diaphragm 5 are accommodated in the central cylindrical portion 10 of the cover body 9 and the vent hole 14 is formed in the peripheral wall portion 13 of the cover body 9.
A ring body 15 is tightly inserted and fixed between the adjuster body 1 and the cover body 9 and close to the diaphragm 5, and a drain hole 16 provided in the ring body 15 in a radial direction is provided. A bank portion 17 that is disposed at a position lower than the vent hole 14 and faces the peripheral rising portion 5a of the diaphragm 5 is formed inwardly projecting at the lower portion of the inner peripheral surface 15a of the ring body 15, and the base portion of the bank portion 17 is formed. and the water passing grooves 18 formed between the inner peripheral surface 15a of the ring member 15, in which the water drain hole 16 is communicated with the upper face side space of the diaphragm 5 through the vent water groove 18.
[0008]
[Effects of the Invention]
The water that has entered from the vent hole 14 for some reason accumulates in the recessed space of the diaphragm support plate 19 joined to the upper surface of the diaphragm 5. If the water intrusion continues thereafter, the water that has climbed over the peripheral edge rising portion 5 a of the diaphragm 5 and the bank portion 17 of the ring body 15 falls into the water passage groove 18 of the ring body 15.
[0009]
The water that has passed through the water passage groove 18 is removed to the outside from the water drain hole 16 that is open on the inner wall surface of the water passage groove 18.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
In the illustrated embodiment, the circular ring body 15 is formed with four drain holes 16 at intervals of 90 degrees. The water passage groove 18 is formed in an annular shape, the inner wall surface on the bank portion 17 side is formed on a slope inclined downward toward the bottom, and the vertical cross section of the water passage groove 18 falls over the bank portion 17. It has a shape to guide.
[0011]
The ring body 15 is formed in a size that contacts the upper surface of the outer peripheral portion of the diaphragm 5, and the ring body 15 is fastened and fixed to the adjuster body 1 by screws 20 that fasten and fix the cover body 9 to the adjuster body 1. Yes.
[0012]
【The invention's effect】
As described above, in the gas pressure regulator of the present invention, the ring body 15 is provided at a level sufficiently close to the diaphragm 5, and the water that has climbed over the peripheral edge rising portion of the diaphragm 5 and the bank portion 17 of the ring body 15 Since the water draining hole 16 communicating with the water flow groove 18 of the body 15 is smoothly removed to the outside, the water staying in the upper surface side space of the diaphragm 5 can be reduced as much as possible, and the diaphragm due to the weight load of the staying water The adverse effect on the operation of can be minimized.
[0013]
Further, the accumulated water in the upper surface side space of the diaphragm 5 is gradually reduced or disappears by the transpiration after the rain or the like stops. However, in the gas pressure regulator of the present invention, the retained water is reduced to a small amount as described above. As a result, the diaphragm can return to the normal operating state at an early stage.
[0014]
Furthermore, since the bank portion 17 faces the peripheral rising portion 5a of the diaphragm 5, even if children insert a foreign object such as a wire from the drain hole 16 by mischief, the foreign object may be damaged by the foreign object. I will not receive it.
[Brief description of the drawings]
FIG. 1 is a front view of a gas pressure regulator according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the gas pressure regulator of FIG.
FIG. 3 is a longitudinal cross-sectional view showing a state in which stagnant water has reached the vent level of a conventional gas pressure regulator.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Adjuster main body 2 Gas inlet 3 Gas outlet 4 Cavity part 5 Diaphragm 5a Diaphragm rising edge part 6 Diaphragm main shaft 7 Control lever 8 Valve 9 Cover body 10 Central cylinder part 11 Compression coil spring 12 Adjustment screw body 13 Cover body Peripheral wall portion 14 Ventilation hole 15 Ring body 16 Drain hole 17 Bank portion 18 Water passage groove 19 Diaphragm support panel 20 Tightening screw

Claims (1)

The regulator main body 1 is provided with a gas inlet 2 and a gas outlet 3, and the upper surface opening of the cavity 4 between the gas inlet 2 and the gas outlet 3 is closed with a diaphragm 5 and connected to the main shaft 6 of the diaphragm 5. The operation lever 7 opens and closes the valve 8 provided at the gas inlet 2, while the compression coil spring 11 and the adjustment screw body 12 push the diaphragm 5 against the central cylinder portion 10 of the cover body 9 that covers the upper surface opening of the regulator body 1. In the gas pressure regulator in which the vent hole 14 is formed in the peripheral wall portion 13 of the cover body 9,
A ring body 15 is tightly inserted and fixed between the adjuster body 1 and the cover body 9 and close to the diaphragm 5, and a drain hole 16 provided in the ring body 15 in a radial direction is provided. is arranged at a position lower than the vent 14, the overhang formed inwardly bank portion 17 facing the peripheral rising portion 5a of the diaphragm 5 in the lower portion of the inner peripheral surface 15a of the ring member 15, the base of the bank portion 17 the water passing grooves 18 formed between the inner peripheral surface 15a of the parts and the ring body 15, characterized in that the water drain hole 16 is communicated with the upper face side space of the diaphragm 5 through the vent water groove 18 Gas pressure regulator.

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