JP2001065793A - Bulk truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bulk truck allowing safe and simple filling of LP gas even in an LP gas storage tank for commercial-scale utility customers. SOLUTION: In a bulk truck for supplying LP gas to a bulk storage tank installed for domestic use, in order to supply the LP gas to an LP gas storage tank installed mainly for industrial use, a branch pipe 34 is provided at a halfway point of a pipe extending from an outlet of a flowmeter 12 disposed in an LP gas supply route from an LP gas tank 1 to a hose 36 for LP gas to provided a hose 37 for LP gas having a coupling 22 adaptable to a liquid connecting port of the LP gas storage tank and disposed at a tip of the hose 37. A branch pipe 43 is provided at a halfway point of a piping route connecting the LP gas tank 1 with a gas hose 45 to provide a hose 46 for LP gas having a coupling 20 adaptable to a gas connecting opening of the LP gas storage tank at a tip of the gas hose 45.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulk lorry for filling LP (liquefied petroleum) gas into a bulk storage tank installed in a general household, and it is also possible to fill an LP gas storage tank mainly installed for industrial use. Things.

[0002]

2. Description of the Related Art Conventionally, for large-scale customers such as industrial use, a supply form in which a stationary LP gas storage tank is provided at a supply place and directly filled by a tank lorry equipped with an LP gas filling device has been adopted. In recent years, a supply form similar to that of a large-scale consumer has been popularized from a supply form of LP gas to general households by a gas cylinder. LP gas storage tanks installed in ordinary households are called bulk storage tanks, and tank lorries that directly fill the bulk storage tanks are called LP gas consumer bulk lorries (hereinafter, bulk lorries).

As shown in FIG. 2, a conventional bulk lorry has an LP gas tank 1 mounted on a chassis of a traveling vehicle 50,
A valve and a meter for filling LP gas into the bulk storage tank are provided in the valve instrument box 2, and a windable hose for connecting to the bulk storage tank is provided in the hose reel box. A safety device is provided.

In consideration of the fact that it is often impossible to park near the bulk storage tank, a long hose (20 m or more) is mounted so that the bulk storage tank can be wirelessly operated from the bulk storage side. . L for large consumers
The P gas storage tank is generally larger than the bulk storage tank, and a space for parking is provided near the P gas storage tank, and the LP gas receiving port has a larger diameter than that of a general household.

[0005]

As described above, the LP gas storage tank and the bulk storage tank store the same LP gas. However, due to the difference in the contents required for filling, the tank lorry for large consumers is required. And the bulk lorry for ordinary households must be filled separately, which makes LP gas transportation inefficient and uneconomical. In particular, the spread of bulk storage tanks has progressed,
As the number of bulk lorries increases, there is a strong demand for bulk lorries to fill large-capacity LP gas storage tanks.

However, since the filling port of the LP gas storage tank for large consumers is larger than that used for ordinary households, a hose for filling LP gas cannot be connected. Therefore, it is conceivable to specially manufacture an adapter for connecting the coupling at the end of the hose to the filling port of the LP gas storage tank, or to arrange the same reception port as the bulk storage tank in the LP gas storage tank. However, in the case of the former adapter, concerns about gas leakage during filling increase,
Since the hose is used for a small-diameter bulk storage tank, there is a problem that it takes a long time to fill the hose.
Since a new hole is provided in the P gas storage tank, it is necessary to perform a sufficient inspection after the remodeling, which requires many man-hours.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bulk lorry capable of easily and safely filling an LP gas storage tank for large customers with LP gas.

[0008]

The present invention employs the following means to achieve the above object. That is, in a bulk lorry equipped with a liquid hose and a gas hose having a coupling connected to the bulk storage tank at the tip for supplying the LP gas to a bulk storage tank installed in an ordinary household and equipped with an LP gas tank, mainly installed for industrial use. In order to supply the LP gas also to the LP gas storage tank, a branch pipe is provided in the middle of the pipe from the outlet of the flow meter provided in the LP gas supply path from the LP gas tank to the liquid hose, and the liquid connection port of the LP gas storage tank is provided. A liquid hose having a coupling corresponding to the tip at the tip is provided, and a branch pipe is provided in the middle of a pipe route connected from the LP gas tank to the gas hose, and a coupling adapted to a gas connection port of the LP gas storage tank is provided at the tip. It is characterized by having a gas hose provided.

The bulk lorry of the present invention relates to an LP gas supply vehicle having an LP gas tank, loading the LP gas at a shipping base, and filling the bulk storage tank mainly installed in ordinary households. Including. The mechanism for filling the bulk storage tank with the LP gas is not particularly limited. For example, a liquid feed pump is driven by a propulsion shaft from a PTO (device for taking out engine power from a transmission portion for work), or a compressor is provided and LP gas (gas) in a bulk storage tank is pumped to an LP gas tank by LP. Conventionally used methods, such as filling by increasing the internal pressure of the gas tank, can be applied.

The liquid hose and the gas hose connected to the LP gas storage tank are of course large in diameter suitable for the coupling at the tip, and the length is such that the bulk lorry can be parked near the LP gas storage tank. It may be short.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in FIG. As described with reference to FIG. 2, the bulk lorry is provided with the LP gas tank 1
Are mounted on the valve instrument box 2 and the hose reel box 3. Further, a hose storage box 17 for storing a liquid hose and a gas hose for filling the LP gas storage tank is provided.

FIG. 1 is a schematic configuration diagram of a bulk lorry.
The LP gas tank 1 is provided at the top with a safety valve 9 that operates when the internal pressure rises abnormally, and a level gauge 8 that indicates the volume of LP gas. In addition, 10 is a manhole. An emergency shutoff valve 5 for gas and emergency shutoff valves 6 and 7 for liquid are provided at a lower portion of the LP gas tank 1 for filling the bulk storage tank with LP gas, and for transferring LP to the LP gas tank 1 at a base. A pipe for filling gas is provided.

A liquid feed pump 11 is provided from the liquid emergency shut-off valve 7 via a pipe 30, and a flow meter 12 is provided from a discharge side of the liquid feed pump 11 via a pipe 32. The T-joint 28 is provided in the pipe 33 on the discharge side of the flow meter 12 and the branch pipe 34 is provided. The pipe 33 is connected to the hose reel 13 via a flexible tube, and the branch pipe 34 is connected to the liquid hose 37 via the swivel joint 25.

The pipes 32, 33 and 34 have a pipe diameter of 25A.
The liquid hose 36 of the hose reel 13 has an inner diameter of 19 mm and a length of 30 m. The liquid hose 37 has an inner diameter of 25 mm.
The length is 10 m. The distal end of the liquid hose 36 is provided with a liquid coupling 15 connected to the bulk storage tank via the safety coupling 14, while the distal end of the liquid hose 37 is connected to the LP gas via the safety coupling 21. A liquid coupling 22 connected to the storage tank is provided.

The liquid feed pump 11 is driven by the traveling vehicle 5.
0 is obtained from the PTO of the engine via the propulsion shaft, and the operation of the liquid feed pump 11 can be turned ON / OFF by an electromagnetic clutch. The flow meter 12 can directly measure the mass, and does not fluctuate with the liquid temperature of the LP gas.

A pipe 48 is provided from the liquid emergency shutoff valve 6, and this path is used when the LP gas tank 1 is filled at the base. Pipes 40 and 41 having a pipe diameter of 25 A are provided from the gas emergency cutoff valve 5, and the pipe 41 is connected to the hose reel 16 via a flexible tube 44.

Further, a T-joint 27 is provided in the pipe 41,
The branch pipe 43 is connected to this, and the swivel joint 2
6 is connected to a gas hose 46. The gas hose 45 of the hose reel 16 has an inner diameter of 9 mm, and the inner diameter of the gas hose 46 is 19 mm.

The gas hose 45 is provided with a gas coupling 18 connected to the bulk storage tank via a safety joint 17 at a distal end thereof, while the gas hose 46 is provided at a distal end of the gas hose 46 via a safety joint 19. A gas coupling 20 connected to the LP gas storage tank is provided.

Next, the operation of the bulk truck configured as described above will be described. First, the LP gas is charged into the LP gas tank 1 at the shipping base, the vehicle is driven to a general home, and the LP gas is parked at an appropriate position near the bulk storage tank that supplies the LP gas. Then, the hose reels 13 and 16 are taken out from the hose reel box 3, and the liquid hose 36 and the gas hose 45 are fed out and connected to the bulk storage tanks.

The emergency shutoff valve 7 and the emergency shutoff valve 5
Is released, the electromagnetic clutch is connected, and the liquid feed pump 11 is operated. Thereby, the LP gas in the LP gas tank 1 is sucked from the pipe 30 and passes through the flow meter 12 to the pipe 33.
To the flexible tube 35, liquid hose 36
And into the bulk reservoir. The pressure of the LP gas (gas) in the bulk storage tank increases with the filling of the bulk storage tank, and the pressure of the LP gas (gas) in the LP gas tank 1 decreases. ) Flows from the gas hose 45 to the LP gas tank 1 through the pipes 41 and 40.

Next, in the case of filling the LP gas storage tank of a large customer, the vehicle is parked near the LP gas storage tank and the liquid hose 3 is charged.
7 and the gas hose 46 are connected to the LP gas storage tank, respectively. The operation of filling is the same as in the case of the bulk storage tank.

[0022]

As described above, the present invention fills the LP gas storage tank of a large consumer with the LP gas separately from the liquid hose and the gas hose which fill the bulk storage tank installed in a general household with the LP gas. Therefore, a branch pipe is provided in the middle of the pipe from the outlet of the flow meter provided in the LP gas supply path,
In addition to providing a liquid hose having a coupling at the tip corresponding to the liquid connection port of the P gas storage tank, a branch pipe is provided in the middle of the pipe path connected from the LP gas tank to the gas hose, and a gas connection port of the LP gas storage tank is provided. A gas hose equipped with an appropriate coupling at the tip is provided, so that both the bulk storage tank and the LP gas storage tank can be easily filled, and it is necessary to have a dedicated vehicle for filling the LP gas storage tank. Not only will it disappear, but it will also increase transportation efficiency.

[Brief description of the drawings]

FIG. 1 is a configuration diagram as one embodiment of a bulk lorry of the present invention.

FIG. 2 is a schematic side view of a bulk lorry.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... LP gas tank 2 ... Valve instrument box 3 ... Hose reel box 5 ... Emergency shut-off valve (gas) 6, 7 ... Emergency shut-off valve (liquid) 8 ... Level gauge 9 ... Safety valve 10 ... Manhole 11 ... Liquid pump 12 ... Flow meter 13 ... Hose reel 14 ... Safety coupling 15 ... Coupling for liquid 16 ... Hose reel 17 ... Safety coupling 18 ... Coupling for gas 19 ... Safety coupling 20 ... Coupling for gas 21 ... Safety coupling 22 ... Coupling for liquid 25 ... Swivel joint (liquid) 26 ... Swivel joint (gas) 27,28 ... T joint 30,32,33 ... Piping 34 ... Branch pipe 35 ... Flexible tube 36 ... Liquid hose 37 ... Liquid hose 40,41 ... Piping 43 ... branch piping 44 ... flexible tube 45 ... gas hose 46 ... gas hose 47 ... hose storage box 48 ... piping 50 ... traveling Both

Claims (1)

[Claims] 1. A bulk lorry equipped with a gas hose and a liquid hose having a coupling connected to a bulk storage tank at an end thereof for supplying an LP gas to a bulk storage tank installed in an ordinary household and equipped with an LP gas tank. To supply LP gas to the LP gas storage tank installed as
A branch pipe is provided in the middle of the pipe from the outlet of the flow meter provided in the LP gas supply path from the LP gas tank to the liquid hose, and a liquid hose having a coupling at a tip adapted to a liquid connection port of the LP gas storage tank is provided. In addition to the above, a branch pipe is provided in the middle of a piping path connected from the LP gas tank to the gas hose, and a gas hose provided with a coupling at a tip adapted to a gas connection port of the LP gas storage tank is provided. Bulk lorry.