JP2936480B1 - LP gas filling valve - Google Patents

Abstract

A main object of the present invention is to provide an LP gas filling valve capable of filling an LP gas with an LP gas cylinder installed at a place of use. SOLUTION: The inside of an LP gas cylinder 1 and the L of the on-off valve 4 are set to L.
An LP gas supply passage 31 communicating with the P gas passage 10;
A main valve body 36 and a main valve seat 34 that form an LP gas filling passage 32 that connects the inside of the LP gas cylinder 1 and the LP gas filling port into which the LP gas filling nozzle 50 is inserted, and that opens and closes the LP gas supply passage 31. And has a sub-valve 37 and a sub-valve seat 35 for opening and closing the LP gas filling passage 32. When one of the main valve 36 and the sub-valve 37 opens, one of the other is opened. Actuating rod 38 so that
The LP gas filling port is provided with a check valve 42 which is connected to both ends of the LP gas filling nozzle and is opened by the LP gas filling nozzle 50, and is attached between the LP gas cylinder 1 and the on-off valve 4. And

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LP gas filling valve capable of filling LP gas into an LP gas cylinder while keeping the LP gas cylinder at a place of use.

[0002]

2. Description of the Related Art As is well known, LP gas filled in an LP gas cylinder passes through an LP gas passage in an on-off valve installed at the top of the LP gas cylinder, and through a communication pipe, a device using the LP gas (gas stove, water heater). Etc.).

[0003] However, when the LP gas filled in the LP gas cylinder is reduced in amount or becomes empty due to use, the trader removes the LP gas cylinder from the communication pipe and uses a truck or the like to remove the remaining amount of gas. And transport the empty or empty LP gas cylinder to the LP gas filling station.
LP gas was filled at the gas filling station, and then transported to the site again and installed at the site.

[0004]

According to the above-mentioned prior art, since the LP gas cylinder is made of metal, even if the LP gas cylinder is made of metal,
Even if the gas cylinder is empty, its weight is large, and it is possible to transport the LP gas cylinder to an LP gas filling station,
Transporting the heavier LP gas cylinder filled with LP gas to the place of use again requires a lot of labor and labor, and is also unforeseen when transporting the LP gas cylinder filled with LP gas by truck or the like. If an accident is encountered, the LP gas cylinder may explode.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and to remove an empty LP gas cylinder from a place of use or to reduce an empty LP gas cylinder. An object of the present invention is to provide an LP gas filling valve which can fill an LP gas cylinder directly with LP gas from an LP gas filling vehicle at a place of use without transporting the LP gas cylinder to an LP gas filling station.

[0006]

To achieve the above object, the present invention has the following technical means. That is, using the reference numerals used in the accompanying drawings corresponding to the embodiments of the present invention, the L gas cylinder 1 and the LP gas using device 12 are connected to one side of the on-off valve body 6 via the communication pipe 5.
A P gas passage 10 is provided. On the other side, when the pressure in the LP gas cylinder 1 exceeds a specified pressure, LP gas is discharged to the atmosphere and L
An on-off valve 4 having a safety valve 9 for suppressing the pressure in the P gas cylinder 1 to a specified pressure or less and a valve element 7 and a valve seat 8 for opening and closing the LP gas passage 10 is provided on the top 2 of the LP gas cylinder 1. In the LP gas supply device that is attached and supplies LP gas to the LP gas-using device 12, the LP gas is supplied.
An LP gas supply passage 31 that connects the inside of the gas cylinder 1 with the LP gas passage 10 of the on-off valve 4, and an LP gas filling that connects the inside of the LP gas cylinder 1 with the LP gas filling port 40 into which the LP gas filling nozzle 50 is inserted. A main valve body 36 and a main valve seat 34 that form the passage 32 and open and close the LP gas supply passage 31, and have a sub-valve 37 and a sub-valve seat 35 that open and close the LP gas filling passage 32. The main valve body 36 and the sub-valve body 37 are connected to both ends of the operating rod 38 so that when one of them opens, the other closes, and the LP gas filling port 40 is provided with LP gas. The LP gas filling valve is provided with a check valve 42 that is opened by the filling nozzle 50 and is mounted between the LP gas cylinder 1 and the on-off valve 4.

The present invention comprises the above technical means, and
A sub-valve 3 having a main valve body 36 and a main valve seat 34 for opening and closing the gas supply passage 31 and opening and closing the LP gas filling passage 32
7 and a sub-valve seat 35, and the main valve body 36 and the sub-valve body 37 are connected to both ends of the operating rod 38. Therefore, one main valve body 36 is separated from the main valve seat 34 to make LP When the gas supply passage 31 is opened, the other sub-valve 37 is seated on the sub-valve seat 35 to close the LP gas filling passage 32, and communicates inside the LP gas cylinder 1 and the LP gas passage 10 of the on-off valve 4. be able to. Conversely, when one main valve element 36 is seated on the main valve seat 34 and closes the LP gas supply passage 31, the other auxiliary valve element 3
7 can be separated from the sub-valve seat 35 to open the LP gas filling passage 32 to communicate the inside of the LP gas cylinder 1 with the LP gas filling port 40.

When the sub-valve element 37 separates from the sub-valve seat 35, L
In the state where the P gas filling passage 32 is open, a check valve 42 is provided in the LP gas filling port 40.
To fill the P gas cylinder 1 with LP gas, use LP
By inserting the gas filling nozzle 50, the check valve 42 is opened, and the LP gas can be filled directly from the LP gas filling nozzle 50 of the LP gas filling vehicle. Then, L
When filling of P gas is completed, LP gas filling nozzle 5
Since the check valve 42 is closed by the escape of 0, the backflow of the LP gas filled in the LP gas cylinder 1 can be prevented. Thereafter, the main valve body 36 is connected to the main valve seat 34.
, The sub-valve 37 is automatically moved to the sub-valve seat 3.
5, the LP gas supply passage 31 is opened, and the LP gas filling passage 32 can be closed while the device is in a normal use state.

[0009]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 3 show a first embodiment of the LP gas filling valve 30. FIG. FIG. 1 is a sectional view showing only the LP gas filling valve 30. The LP gas filling valve 30 has a passage through which LP gas passes,
The passage is divided into an LP gas supply passage 31 and an LP gas filling passage 32 by a branch passage 33. The LP gas supply passage 31 is a passage that connects the inside of the LP gas cylinder 1 and the LP gas passage 10 of the on-off valve 4. The LP gas filling passage 32 is a passage connecting the inside of the LP gas cylinder 1 and the LP gas filling port 40 into which the LP gas filling nozzle 50 is inserted.

In the LP gas supply passage 31,
A main valve body 36 and a main valve seat 34 are provided, and a sub-valve body 37 and a sub-valve seat 35 are provided in the LP gas filling passage 32. The main valve body 36 and the sub-valve body 37 are connected to the branch passage 3 so that when one of them opens, the other closes.
3 is provided at both ends of the operating rod 38 provided in the
In addition, the main valve body 36 and the sub-valve body 37 connected to both ends of the operating rod 38 are connected to the operation knob 39 provided outside the LP gas filling valve 30.
By operating at 9, the main valve element 36 and the sub-valve element 37 can be linked. That is, the main valve body 36 is connected to the main valve seat 3.
When the LP gas supply passage 31 is opened apart from 4, the sub-valve element 37 can be seated on the sub-valve seat 35 to close the LP gas filling passage 32. Conversely, the main valve element 36 is connected to the main valve seat 34.
When the LP gas supply passage 31 is closed while sitting on the
7 can open the LP gas filling passage 32 away from the auxiliary valve seat 35.

FIG. 2 is a sectional view showing a state in which the LP gas filling valve 30 is mounted between the LP gas cylinder 1 and the on-off valve 4. That is, first, the top 2 of the LP gas cylinder 1
The LP gas filling valve 30 is attached. Next, the on-off valve 4 is mounted on the side opposite to the side on which the LP gas cylinder 1 of the LP gas filling valve 30 is mounted. And LP gas is LP
The state of use being supplied to the gas using device 12 is shown.

Then, the operating knob 39 is operated to operate the main valve body 3.
6 is separated from the main valve seat 34 to open the LP gas supply passage 31. On the other hand, since the sub-valve element 37 is seated on the sub-valve seat 35, the LP gas filling passage 32 is closed. Next, by operating the opening / closing knob 11 of the opening / closing valve 4 to separate the valve body 7 from the valve seat 8, the inside of the LP gas cylinder 1 and the LP gas passage 10 of the opening / closing valve 4 can be communicated.

Then, the LP gas passes through the LP gas supply passage 31 of the LP gas filling valve 30 from the LP gas inlet / outlet passage 3 in the LP gas cylinder 1, passes through the LP gas passage 10 of the on-off valve 4, and passes through the connection pipe 5 through the LP gas passage 10. The gas is supplied to the gas use equipment 12. That is, the normal use state of the LP gas filling valve 30 is shown.

Next, FIG. 3 shows that the LP gas filling valve 30 is
FIG. 3 is a cross-sectional view showing a use state in which the LP gas cylinder 1 is mounted between the LP gas cylinder 1 and the on-off valve 4 and is filled with LP gas. First, the valve body 7 is seated on the valve seat 8 by operating the opening / closing knob 11 of the opening / closing valve 4 to disconnect the LP gas cylinder 1 from the LP gas passage 10. Next, the operation knob 39
Is operated to separate the sub-valve body 37 from the sub-valve seat 35 to open the LP gas filling passage 32, and at the same time, the main valve body 36 is seated on the main valve seat 34 to open the LP gas supply passage 31.

Then, the LP gas filling nozzle 50 is
The LP gas can be filled into the LP gas cylinder 1 directly from the LP gas filling nozzle 50 of the LP gas filling vehicle by inserting the check gas into the gas filling port 40 and opening the check valve 42.
In addition, since the main valve body 36 is seated on the main valve seat 34 at this time, the LP gas being filled is erroneously supplied to the LP gas supply passage 3.
Since the gas is not sent to the LP gas-using device 12 through 1, the LP gas can be safely filled.

After the LP gas filling is completed, the LP gas filling nozzle 50 is pulled out of the LP gas filling port 40,
Since the check valve 42 is closed by the action of the pressing spring 43, the filled LP gas does not leak into the atmosphere. Thereafter, when the operation valve 39 is operated to separate the main valve body 36 from the main valve seat 34, the sub-valve body 37 is seated on the sub-valve seat 35 in conjunction with the opening of the LP gas supply passage 31, and LP
The gas filling passage 32 is closed. And the opening / closing knob 11
Is operated to separate the valve body 7 from the valve seat 8, the LP gas cylinder 10 communicates with the LP gas passage 10 of the on-off valve 4, and the LP gas can be supplied to the LP gas using device 12.

4 to 6 show a second embodiment of the LP gas filling valve 30. FIG. Fig. 4 shows the LP gas filling valve 3
It is sectional drawing which shows only 0. LP gas filling valve 3
An LP gas supply passage 31 and an LP gas filling passage 32 are formed inside the zero. The LP gas supply passage 31
The LP gas filling passage 32 is a passage connecting the inside of the P gas cylinder 1 and the LP gas passage 10 of the on-off valve 4. The LP gas filling passage 32 connects the inside of the LP gas cylinder 1 and the LP gas filling port 40 into which the LP gas filling nozzle 50 is inserted. It is a passage to do.

The LP gas supply passage 31 is provided with a main valve body 36 and a main valve seat 34, and the LP gas filling passage 32 is provided with a sub-valve body 37 and a sub-valve seat 35. The main valve element 36 and the sub-valve element 37 are connected to both ends of the operating rod so that when one of them opens, the other closes.

A check valve 42 is provided in the LP gas filling port 40, and the check valve 42 is connected to the operating rod 38. In a normal state, the check valve 42 is closed, the sub-valve 37 is seated on the sub-valve seat 35 to close the LP gas charging passage 32, and the main valve body 36 is separated from the main valve seat 34 to separate the LP gas. The supply passage 31 is opened. On the other hand, when the check valve 42 is opened, the sub-valve element 37 separates from the sub-valve seat 35 and L
The P gas filling passage 32 is opened, and the main valve body 36 sits on the main valve seat 34 to close the LP gas supply passage 31.

FIG. 5 is a sectional view showing a state in which the LP gas filling valve 30 is mounted between the LP gas cylinder 1 and the on-off valve 4. First, LP gas was placed on top 2 of LP gas cylinder 1.
The gas filling valve 30 is attached, and the on-off valve 4 is provided on the side of the LP gas filling valve 30 opposite to the side on which the LP gas cylinder 1 is attached.
Attach. In addition, LP gas is used in LP gas-using equipment 1
2 shows a use state being supplied.

As described above, in normal times, the LP gas supply passage 31 is open and the LP gas filling passage 32 is closed. Therefore, the opening / closing knob 11 of the opening / closing valve 4 is operated to move the valve seat 8 to the valve body 7. Is released, the inside of the LP gas cylinder 1 and the L
The P gas passage 10 communicates. Therefore, LP gas is LP gas
From the LP gas inlet / outlet passage 3 of the gas cylinder 1, through the LP gas supply passage 31 of the LP gas filling valve 30, through the LP gas passage 10 of the on-off valve 4, and from the connecting pipe 5 to the LP gas using device 12
Supplied to

FIG. 6 is a sectional view showing a use state in which the LP gas filling valve 30 is mounted between the LP gas cylinder 1 and the on-off valve 4 to fill the LP gas cylinder 1 with the LP gas. First, the on / off knob 11 of the on / off valve 4 is operated to seat the valve body 7 on the valve seat 8 so that the inside of the LP gas cylinder 1 and the LP gas passage 10 are not communicated.

Next, when the LP gas filling nozzle 50 is inserted into the LP gas filling port 40 and the check valve 42 is opened, the operating rod 38 moves in conjunction with it, and the sub-valve element 37 separates from the sub-valve seat 35,
The main valve element 36 is in a state of sitting on the main valve seat 34. That is,
At the same time as the LP gas filling passage 32 is opened, the LP gas supply passage 31 is closed.

Then, the LP gas filling nozzle 50 is
When the LP gas is inserted into the gas filling port 40, the LP gas can be filled into the LP gas cylinder 1. At this time, since the LP gas supply passage 31 is closed, L
Since the P gas is not sent to the LP gas using device 12 through the LP gas supply passage 31, the LP gas can be safely filled.

After the LP gas filling is completed, if the LP gas filling nozzle 50 is pulled out of the LP gas filling port 40,
Since the check valve 42 is closed by the action of the pressing spring 43, not only does the filled LP gas leak into the atmosphere, but also the sub-valve element 37 is seated on the sub-valve seat 35 and the LP gas filling passage 32 At the same time, the main valve element 36 is separated from the main valve seat 34 and the LP gas supply passage 31 is opened, so that the LP gas cylinder 10 and the LP gas passage 10 of the on-off valve 4 are opened.
Communicate with each other, so that the LP gas using device 12 can be supplied with the LP gas.

[0026]

As described in detail above, the present invention has the following effects. By installing it between the LP gas cylinder and the on-off valve, the contents can be reduced, or the LP gas cylinder that has been emptied can be placed on the spot from the LP gas-filled vehicle.
An LP gas filling valve capable of filling a gas is provided.

Further, the present invention provides an LP gas filling valve which can be easily applied to an existing LP gas cylinder because it is attached between a conventional LP gas cylinder and an on-off valve.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of an LP gas filling valve according to the present invention.

FIG. 2 shows a conventional on-off valve and an L gas filling valve according to the present invention.
It is sectional drawing which shows 1st Embodiment at the time of attaching and using between P gas cylinders.

FIG. 3 shows a conventional LP gas filling valve according to the present invention,
It is a sectional view showing a 1st embodiment in the case where it attaches between P gas cylinders and is filled with LP gas.

FIG. 4 is a sectional view showing a second embodiment of the LP gas filling valve of the present invention.

FIG. 5 shows a conventional on-off valve and an L gas filling valve according to the present invention;
It is sectional drawing which shows 2nd Embodiment at the time of attaching and using between P gas cylinders.

FIG. 6 shows a conventional on-off valve and L gas filling valve according to the present invention.
It is a sectional view showing a 2nd embodiment in the case where it attaches between P gas cylinders and is filled with LP gas.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 LP gas cylinder 2 Top part 3 LP gas inlet / outlet path 4 On-off valve 5 Connecting pipe 6 On-off valve body 7 Valve body 8 Valve seat 9 Safety valve 10 LP gas passage 11 Opening / closing knob 12 LP gas use equipment 30 LP gas filling valve 31 LP gas supply passage 32 LP gas filling passage 33 branch passage 34 main valve seat 35 sub valve seat 36 main valve body 37 sub valve body 38 operating rod 39 operating knob 40 LP gas filling port 41 check valve seat 42 check valve 43 pressing spring 50 LP gas Filling nozzle

Claims (1)

(57) [Claims] An on-off valve body has an LP gas passage on one side of an on-off valve body to communicate the LP gas cylinder with an LP gas-using device via a communication pipe, and the pressure inside the LP gas cylinder on the other side. A safety valve 9 for discharging LP gas to the atmosphere when the pressure is equal to or higher than a specified pressure to suppress the pressure in the LP gas cylinder 1 to a specified pressure or lower is provided. A valve 7 and a valve seat 8 are provided for opening and closing the LP gas passage 10. The on-off valve 4 is attached to the top 2 of the LP gas cylinder 1, and in the LP gas supply device that supplies LP gas to the LP gas-using device 12, the LP gas passage 10 in the LP gas cylinder 1 and the on-off valve 4 is provided.
And an LP gas filling passage 32 connecting the inside of the LP gas cylinder 1 and the LP gas filling port 40 into which the LP gas filling nozzle 50 is inserted, thereby forming the LP gas supply passage 31. Main valve element 3 that opens and closes
6 and a main valve seat 34, and a sub-valve 37 and a sub-valve seat 35 for opening and closing the LP gas filling passage 32, and one of the main valve 36 and the sub-valve 37 is opened. Time,
The LP gas filling port 40 is provided with a check valve 42 which is connected to both ends of the operating rod 38 so that one of the other ends is closed, and is opened by an LP gas filling nozzle 50. An LP gas filling valve, which is mounted between the on-off valve 4 and the on-off valve 4.