JP2003170775A - Device for transferring and filling gas - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the size of the whole of a device relating to a driving means for driving a compressor. <P>SOLUTION: This on-vehicle gas transferring and filling device blocks a prescribed portion P in a buried gas pipe 18 for supplying a fuel gas, and transfers the fuel gas existing in the prescribed portion P to another portion Q in the buried gas pipe. The device is provided with the compressor 8 for sucking the fuel gas existing in the prescribed portion P to feed it forcibly to the other portion Q in the buried gas pipe 18, and the driving means 10 for driving the compressor 8, and the driving means 10 is operated using the fuel gas provided in a transfer-filling working site. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle gas transfer device for transferring a fuel gas in a specific portion of a gas feed passage to another portion.

[0002]

2. Description of the Related Art When a part of a gas supply passage, for example, a gas burial pipe is inspected, repaired or replaced with a new one,
Gas gas for pipes to be inspected or repaired, such as city gas, is transferred to other parts for filling, and the gas for fuel is removed from that part to reduce the pressure to a low pressure, or there is no gas for fuel. The desired operation is performed in this state, and the gas transfer device is used to transfer the fuel gas to other parts of the gas burial pipe in this manner.

This gas transfer device is equipped with a compressor for sucking in and feeding the fuel gas under pressure, and a drive means for driving this compressor. When using this gas transfer device, shut off the shut-off valves provided on both sides of the predetermined portion of the gas burial pipe, connect the suction side of the compressor to the predetermined portion of the gas burial pipe, and discharge the compressor. To other parts of the gas burial pipe. When the driving means is operated in such a state, the compressor operates and the fuel gas in a predetermined portion of the gas burial pipe is pressure-fed to another portion, and thus the fuel gas in the predetermined portion is changed to another portion. Can be transferred to the site.

[0004]

As the above-described gas transfer / filling device, a vehicle-mounted device that can be moved to a work site and used has been proposed. Since the entire on-vehicle type is installed on the bed of a vehicle, for example, a truck, this gas transfer apparatus can be easily moved to a desired work site.

However, in the conventional gas transfer device, the dedicated fuel is used to drive the driving means, and therefore, in the on-vehicle type, the dedicated fuel for driving the driving means is also used in the vehicle. Since it has to be mounted, and due to this, the gas transfer filling device becomes large in size, and there is also a problem that a large-sized vehicle must be used as well.

An object of the present invention is to provide a gas transfer filling device which can reduce the size of the entire device in association with a driving means for driving a compressor.

[0007]

According to the present invention, a predetermined portion of a gas feed passage for feeding a fuel gas is shut off, and the fuel gas existing in this predetermined portion is replaced by the other gas feed passage. Is a vehicle-mounted gas refilling device for transferring the fuel gas from the predetermined portion to the other portion of the gas feed passage, and a compressor for driving the compressor. A driving means is provided, and the driving means is operated by using a fuel gas obtained at a transfer and filling work site.

According to the present invention, the compressor for pumping the fuel gas and the driving means for driving the compressor are provided, and the fuel in the predetermined portion of the gas feed passage is operated by the driving of the driving means. The working gas is pressure-fed to another portion, and the fuel gas in the predetermined portion can be transferred and filled into the other portion as required. Further, since the fuel gas obtained at the transfer and filling work site is used to operate the drive means, almost no dedicated fuel is required to operate the drive means, and in connection with this, the overall size of the device can be reduced. In addition, it is possible to use a small vehicle equipped with the device. The drive means can, for example, consist of a gas engine, in which case the compressor is driven directly by the gas engine. The driving means is
Further, for example, the gas engine and a fluid pressure motor (for example, a hydraulic motor) driven by using a pressure fluid generated by the operation of the gas engine may be combined, and in this case, the compressor is a fluid pressure motor. Driven through. Furthermore, the drive means can also consist of a gas turbine, or alternatively a microturbine generator,
A combination of a power generation device such as a fuel cell and an electric motor that is rotationally driven by using the electric power generated by the power generation device may be used. Further, the fuel gas obtained at the refilling work site is a fuel gas that is refilled from a predetermined part of the gas feed passage to another part, a fuel gas that is present in the other part, or a refill. It is a gas for fuel or the like in another gas supply passage arranged near the gas supply passage to be performed, and these fuel gases can be easily obtained at the work site.
If the driving of the driving means is started by using the fuel gas in the predetermined portion of the gas feed passage, the fuel tank for the dedicated fuel can be substantially omitted.

Further, the present invention is characterized in that the driving means is operated by using the fuel gas transferred from the predetermined portion to the other portion. According to the present invention, the driving means is operated by using the fuel gas that is refilled from the predetermined portion of the gas feed passage to the other portion, so that the fuel gas extracted from the predetermined portion is used as the driving means. It suffices to supply it, and the fuel gas can be easily obtained to operate the drive means.

Further, according to the present invention, the fuel gas in the other portion is prevented from flowing back to the compressor side in the discharge passage for transferring the fuel gas from the compressor to the other portion. A check valve for operating the discharge passage, a fuel supply passage is connected to the discharge passage upstream of the check valve, and fuel gas discharged from the compressor is driven through the fuel supply passage. It is characterized in that it is supplied to the means.

According to the present invention, since the check valve is arranged in the discharge flow path from the compressor, the fuel gas (for example, the transferred fuel) existing in the other part of the gas supply flow path is It is possible to reliably prevent the gas for use) from flowing back to the compressor side. Further, since the fuel supply passage is connected to the discharge passage on the upstream side of the check valve, the fuel gas from the compressor is supplied to the drive means, and is transferred to another portion of the gas supply passage. The drive gas can be operated by using the fuel gas as a fuel.

Further, in the present invention, the driving means has a dedicated gas engine mounted on a vehicle, and the fuel gas discharged from the compressor is supplied to the gas engine through the fuel supply passage, The compressor is driven by using the driving force of the gas engine.

According to the invention, the drive means has a dedicated gas engine mounted on the vehicle, and the compressor is driven by utilizing the driving force of the gas engine.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a gas transfer filling device according to the present invention will be described below with reference to the accompanying drawings.
1 is a simplified diagram showing a vehicle equipped with a first embodiment of a gas transfer device according to the present invention, and FIG. 2 is a simplified view of the gas transfer device of the first embodiment shown in FIG. It is a block diagram.

In FIGS. 1 and 2, the illustrated gas transfer device 2 is an on-vehicle type, and is mounted on a carrier 6 of a truck 4 as a vehicle as required as shown in FIG. 1, for example. By mounting it on the vehicle like this,
It can be easily moved to the construction site to perform the transfer and filling work described later.

The gas transfer / filling device 2 includes a compressor 8 for sucking and pumping the fuel gas, and the compressor 8
And a drive means 10 for driving. In this embodiment, the driving means 10 is composed of a gas engine 12, and the output side of the gas engine 12 is drivingly connected to the compressor 8. Therefore, when the gas engine 12 is operated as described below, the compressor 8 is directly driven by the gas engine 12.

A suction passage 14 is provided on the suction side of the compressor 8.
(For example, a suction hose, etc.) is connected,
A discharge channel 16 (for example, a discharge hose or the like) is connected to the discharge side. Shut-off valves 20 and 22 are arranged at both ends of a predetermined portion of the gas-buried pipe 18 as a gas supply passage, for example, a portion indicated by the symbol P in this embodiment, and these shut-off valves 20 and 22 are turned off. As a result, the predetermined portion P of the gas supply flow path is in a state of being separated from other portions than the predetermined portion P, that is, the portions indicated by the symbols Q1 and Q2 in this embodiment.

The suction passage 14 is connected to a predetermined portion P of the gas feed passage (gas burying pipe 18), and the discharge passage 16 is connected to a portion Q1 other than the predetermined portion P of the gas feed passage. To be done. A first opening / closing valve 24 and a gas filter 26 are arranged in this order in the suction passage 14. First on-off valve 24
Allows the fuel gas to be sucked through the suction passage 14 in the open state, and the gas filter 26 removes impurities such as dust and dust contained in the fuel gas flowing through the suction passage 14. Further, in the discharge passage 16, a pressure adjusting tank 28, a check valve 30, and a second opening / closing valve 32 are arranged in this order. The pressure adjusting tank 28 temporarily stores the fuel gas discharged from the compressor 8 and adjusts the pressure thereof, and the check valve 30 controls the fuel gas compressor 8 from the other portion Q1 of the gas feed passage 18. The second on-off valve 32 allows the fuel gas to be pressure-fed through the discharge passage 16 in the open state.

In this embodiment, a fuel supply passage 34 is connected to a portion of the discharge passage 16 between the pressure adjusting tank 28 and the check valve 30, and the fuel supply passage 34 is
It is connected to the gas engine 12 via the switching control valve 36, and a part of the fuel gas discharged from the compressor 8 is supplied to the gas engine 12 via the fuel supply passage 34 and the switching control valve 36. Further, an auxiliary tank 38 is provided in association with the gas engine 12, and the auxiliary tank 38
Are connected to the switching control valve 36 via the auxiliary supply passage 40. The auxiliary tank 38 is filled with a fuel gas, and as described later, the fuel gas in the auxiliary tank 38 is supplied with the auxiliary supply passage 40 when the gas engine 12 starts to operate.
And is fed to the gas engine 12 via the switching control valve 36.

Next, the gas refilling by the gas refilling device 2 will be described as follows. When the fuel gas in the predetermined portion P of the gas burying pipe 18 (gas feed passage) is transferred to another portion Q1, the shutoff valves 20 and 22 are turned off, and the predetermined portion P of the gas burying pipe 18 is changed to another. Part Q of
Separated from 1, Q2. Next, the suction flow path 14 is connected to a predetermined portion P of the gas burying pipe 18, and the discharge flow path 1
6 is connected to another portion Q1 of the gas burying pipe 18 (the portion to which the fuel gas is transferred and filled).

After that, the gas engine 12 is operated after opening the first and second on-off valves 24 and 32 (or the first and second on-off valves 2 after operating the gas engine 12).
Open 4, 32). At the start of operation, the fuel gas in the auxiliary tank 38 is supplied to the gas engine 12 through the auxiliary supply passage 40, the switching control valve 36, and the downstream side portion of the fuel supply passage 34. The gas engine 12 is operated.

When the gas engine 12 is started in this way, the compressor 8 is operated by the gas engine 12, and the fuel gas in the predetermined portion P of the gas burying pipe 18 is sucked into the compressor 8 through the suction passage 14 and is sucked. The generated fuel gas is pressure-fed to the other portion Q1 of the gas burying pipe 18 through the discharge passage 16. The impurities contained in the fuel gas flowing through the suction passage 14 are removed while flowing through the gas filter 26. Further, the fuel gas flowing through the discharge passage 16 is transferred to another portion Q1 of the gas burying pipe 18 after the pressure is adjusted by the pressure adjusting tank 28.

When the transfer of the fuel gas from the predetermined portion P to the other portion Q1 is started and the pressure of the fuel gas flowing through the discharge passage 16 rises to the predetermined pressure, the switching control valve 40 operates as required. When the fuel supply flow path 34 is switched, the upstream side and the downstream side of the fuel supply flow path 34 communicate with each other through the switching control valve 36, and the fuel gas flowing through the discharge flow path 16, in other words, the fuel gas to be refilled is supplied with the fuel. Gas engine 12 through flow path 34
And the gas engine 12 is operated by the fuel gas to be refilled (at this time, the communication between the auxiliary supply passage 40 and the downstream side of the fuel supply passage 34 is cut off, and the auxiliary tank 38 is discharged from the auxiliary tank 38). Supply of fuel is stopped). As described above, since the gas engine 12 is operated by using the fuel gas that is refilled after the start, it is almost unnecessary to mount the dedicated fuel for the operation of the gas engine 12 on the truck 4. As described above, for example, it is only necessary to mount the fuel gas for starting the operation. Therefore, the fuel tank for filling the dedicated fuel can be downsized, the gas transfer device can be downsized, and the truck 4 mounting the device can be downsized. Becomes In addition, for example, when starting the operation, the gas-buried pipe 1
8 can be supplied to the gas engine 12 at a predetermined pressure through the suction passage 14, the discharge passage 16 and the fuel supply passage 34, the auxiliary tank 3
8 can be omitted.

When the transfer of the fuel gas in the gas burying pipe 18 to the other portion Q1 is completed, the first and second opening / closing valves 2
4, 32 are kept closed, the operation of the gas engine 12 is stopped, and the connection between the suction flow passage 14 and the discharge flow passage 16 is released. In this state, the predetermined portion P of the gas burial pipe 18 is kept in a state where the pressure of the fuel gas is reduced or in the state where the fuel gas does not exist. In addition, work such as replacement with a new pipe can be performed safely.

Next, with reference to FIG. 3, a second embodiment of the gas transfer device according to the present invention will be described. FIG. 3 shows the second
FIG. 3 is a block diagram schematically showing the gas transfer filling device of the embodiment of FIG. In the second embodiment, the structure of the driving means for driving the compressor is different, and the members substantially the same as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 3, the drive means 10A of the gas transfer device 2A is composed of a combination of a gas engine 12 and a fluid pressure motor driven by using the pressure fluid generated by the operation of the gas engine 12. For example, pressure oil is used as the pressure fluid, and the fluid pressure motor is composed of a hydraulic motor 52, for example.
The output side of is driven and connected to the compressor 8. A hydraulic pump 54 as a fluid pressure pump is drivingly connected to the gas engine 12, and oil in an oil tank 56 as a fluid tank is circulated and circulated through a pressure oil circulation channel 58 as a fluid circulation channel. The pressure oil flows through the hydraulic pump 54 and the hydraulic motor 52 and returns to the oil tank 56. The other configurations of the second embodiment are substantially the same as those of the first embodiment described above.

In the second embodiment, when the gas engine 12 is operated, the gas engine 12 operates the hydraulic pump 54, and the action of the hydraulic pump 54 causes the oil in the oil tank 56 to circulate under pressure. Flow through path 58. By doing so, the hydraulic motor 52 is rotationally driven by the circulating pressure oil, and the compressor 8 is operated by the hydraulic motor 52. Thus, as in the first embodiment, the fuel in the predetermined portion P of the gas burying pipe 18 is fueled. The working gas is sucked into the compressor 8 through the suction passage 14,
The sucked fuel gas is pressure-fed through the discharge passage 16 and is transferred and filled into another portion Q1 of the gas burying pipe 18. Also in the second embodiment, the fuel gas in the auxiliary tank 38 is used as the fuel when the gas engine 12 is started, but the fuel gas that is transferred to another portion Q1 after the start is used as the fuel. To be done. Since the fuel gas is refilled in this manner, the same effects as those of the first embodiment can be achieved in the second embodiment as well.

Although the embodiment of the gas transfer filling apparatus according to the present invention has been described above, the present invention is not limited to such an embodiment, and various modifications and corrections can be made without departing from the scope of the present invention. Is.

For example, in the first and second embodiments, the pressure adjusting tank 28 is provided in the discharge passage 16 from the compressor 8.
However, if the pressure on the discharge side of the compressor 8 can be maintained at a predetermined pressure, such a pressure adjustment tank 28 can be omitted.

Further, for example, in the first and second embodiments, the driving means is operated by using the fuel gas that is refilled from the predetermined portion of the gas feed passage. Instead of the fuel gas, the fuel gas in another portion to be refilled with the fuel gas, the fuel gas in the gas feed passage of the other line disposed in the refilling work site, or a plurality of these fuels You may make it drive a drive means using gas together.

Furthermore, for example, in the first and second embodiments, the gas engine 1 dedicated to the gas transfer device 2 (2A) is used.
2 is used to drive the compressor 8, but when the vehicle drive source is, for example, a gas engine, the gas engine may be used to drive the compressor 8. In this case, Also, the traveling gas engine can be operated using a part of the fuel gas obtained at the transfer filling work site, for example, the fuel gas transferred by the gas transfer device 2 (2A).

[0032]

According to the gas transfer filling apparatus of the first aspect of the present invention, the compressor is actuated by the driving means, and the action of the compressor causes the fuel gas in the predetermined portion of the gas feed passage to be replaced by another gas. It can be pumped to the site as desired. In addition, since the fuel gas obtained at the transfer and filling work site is used to operate the drive means, almost no dedicated fuel is required to operate the drive means, and in connection with this, the overall size of the device can be reduced. In addition, it is possible to use a small vehicle equipped with the device.

Further, according to the gas filling apparatus of the second aspect of the present invention, the driving means can be operated by using the fuel gas extracted from the predetermined portion of the gas feed passage.

Further, according to the gas transfer filling apparatus of the third aspect of the present invention, since the check valve is arranged in the discharge flow path from the compressor, it exists in the other part of the gas supply flow path. It is possible to reliably prevent the fuel gas from flowing back to the compressor side. Further, since the fuel supply passage is connected to the upstream side of the check valve in the discharge passage, the drive means is operated by using the fuel gas transferred to another portion of the gas supply passage as the fuel. can do. Further, according to the gas transfer apparatus of claim 4 of the present invention, the compressor can be driven by utilizing the driving force of the dedicated gas engine mounted on the vehicle.

[Brief description of drawings]

FIG. 1 is a simplified diagram showing a vehicle equipped with a first embodiment of a gas transfer filling device according to the present invention.

FIG. 2 is a block diagram schematically showing a gas transfer filling device according to the first embodiment of FIG.

FIG. 3 is a block diagram schematically showing a second embodiment of the gas transfer filling device according to the present invention.

[Explanation of symbols]

2,2A gas transfer device 4 trucks 8 compressor 10,10A drive means 12 gas engine 14 Suction channel 16 discharge channels 18 Gas buried pipe 20,22 Shut-off valve 30 check valve 34 Fuel supply channel 52 Hydraulic motor 54 Hydraulic pump

Claims (4)

[Claims] 1. An on-vehicle gas for shutting off a predetermined portion of a gas feed passage for feeding a fuel gas and transferring the fuel gas existing in this predetermined portion to another portion of the gas feed passage. A transfer filling device, comprising: a compressor for sucking the fuel gas in the predetermined portion and sending the fuel gas under pressure to another portion of the gas supply passage; and a drive unit for driving the compressor, The on-vehicle gas transfer / filling device, wherein the driving means is operated by using the fuel gas obtained at the transfer / filling work site. 2. The vehicle-mounted gas transfer / filling device according to claim 1, wherein the driving unit is operated by using the fuel gas transferred from the predetermined part to the other part. 3. The discharge flow passage for transferring and filling the fuel gas from the compressor to the other portion is a reverse flow passage for preventing the fuel gas in the other portion from flowing back to the compressor side. A stop valve is provided, a fuel supply passage is connected to the discharge passage upstream of the check valve, and the fuel gas discharged from the compressor is supplied to the drive means through the fuel supply passage. The vehicle-mounted gas transfer device according to claim 2, wherein 4. The drive means includes a dedicated gas engine mounted on a vehicle, and fuel gas discharged from the compressor is supplied to the gas engine through the fuel supply passage, The on-vehicle gas transfer apparatus according to claim 3, wherein the compressor is driven by using a driving force.