JPH08295172A - Refueling vehicle - Google Patents

Abstract

PURPOSE: To provide a refueling vehicle which does not require to keep operating while an remote operating means is being held when refueling is done by the use of a pistol nozzle, but requires to keep operating while only the pistol nozzle is being held, and thereby extraordinarily enhances its operability. CONSTITUTION: Fuel oil in an on-vehicle tank 2 has paased by a refueling pipeline 8 to which a refueling equipment group 11 is disposed, and refueling is done to an aircraft through either one of a first refueling hose 10 equipped with a pressure refueling nozzle 9 or a second refueling hose 12 equipped with a pistol nozzle 11 by way of a manual three-way valve 17 thereafter. And its system comprises a control valve 16 provided for the refueling pipeline 8, a remote operating means 25 capable of opening/closing the aforesaid control valve, and a control section C capable of detecting the switch-over condition of the three-way valve 17, and of opening/closing the control valve 16 provided therein. The control valve 16 can be opened only when opening is done by the remote operating means 25, and only when switch-over for opening to the pistol nozzle side 11 of the three-way valve 17 is made so as to be detected by the control section C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fueled vehicle. That is, the present invention relates to a fuel refueling vehicle for refueling an aircraft with fuel oil at an airport.

[0002]

2. Description of the Related Art Fuel refueling vehicles of the type that take in fuel oil pumped through an underground hydrant pipe (so-called servicer) and fuel oil loaded in a vehicle tank are refueled. There is a type to do. In the latter type of fuel refueling vehicle equipped with a tank, the fuel oil of the tank is provided with a first refueling hose having a pressure refueling nozzle or a pistol nozzle after passing through a refueling pipe in which refueling equipment is arranged. Refuel the aircraft with one of the second refueling hoses. Refueling with a pressure refueling nozzle is performed for a large aircraft, and refueling with a pistol nozzle is performed for a small aircraft. When refueling with the pressure refueling nozzle, the pressure refueling nozzle is tightly connected to the refueling port of the aircraft, and the worker does not need to hold the pressure refueling nozzle by hand during the refueling work. On the other hand, when refueling with the pistol nozzle, it is necessary for the worker to hold the pistol nozzle by hand and continue to open it during refueling work. That is, the pistol nozzle is opened for refueling only while holding the grip portion with the hand, whereas it is closed and refueling is impossible when the hand is released.

By the way, in this type of fuel refueling vehicle, a control valve is provided in the refueling pipe for safety. The control valve is adapted to be opened and closed by a remote control device, and the worker is required to hold the remote control device by hand and continue to turn on the operation switch during refueling. In other words, while the grip of the remote control device is held by hand, the operation switch is turned on and the control valve in the oil supply pipe is opened to refuel, while the grip of the remote control device is operated. When the hand is released, the operation switch is turned off and the control valve of the oil supply pipe is closed, so that the oil cannot be supplied.

[0004]

By the way, the following problems have been pointed out in such a conventional example. That is, in the fuel refueling vehicle of this type of conventional example, first, when refueling with the pressure refueling nozzle, the worker refuels without holding the pressure refueling nozzle to the refueling port of the aircraft by hand. While working, hold only the remote control device by hand,
All that is required is to continue to turn on the operation switch (open the control valve), and there will be no particular hindrance to the work.
On the other hand, when refueling with a pistol nozzle, the worker holds the pistol nozzle by hand with respect to the fueling port of the aircraft and continues to open it, and also holds the remote control device to turn on the operation switch (control). It was necessary to continue to open the valve). As described above, in the fuel refueling vehicle of this type of conventional example, when refueling with the pistol nozzle, the worker needs to hold both the pistol nozzle and the remote control device to continue operating during refueling, which is very troublesome. However, there was a problem that it was troublesome and the workability was poor.

In view of the above situation, the present invention has been made to solve the problems of the above-mentioned conventional example.
A switching valve for the refueling hose / pressure refueling nozzle side and the second refueling hose / pistol nozzle side is provided, and a control unit that can detect the switching state of this switching valve and that can open / close the control valve is provided. Not only during the opening operation by the control unit, but also when the control unit detects that the switching valve is switching to the second refueling hose / pistol nozzle side, the control valve of the refueling pipe can be automatically opened, so It is an object of the present invention to provide a fuel refueling vehicle that simplifies the work when refueling.

[0006]

The technical means of the present invention for achieving this object is as follows. That is, this fuel refueling vehicle is manually operated after the fuel oil loaded in a vehicle-mounted tank is passed through a bottom valve of the tank and a refueling pipe in which refueling equipment such as a pump, a filter, and a measuring instrument are arranged. The first refueling hose having a pressure refueling nozzle and the second refueling hose having a pistol nozzle are used to refuel the aircraft via the switching valve. Then, a control valve provided in the middle of the oil supply pipe, a remote operation device capable of opening and closing the control valve by remote manual operation, a switching state of the switching valve can be detected, and the control valve can be opened and closed. And a control unit. The control valve can be opened only when an opening operation is performed by the remote operation device or when an opening switching of the switching valve to the second fuel supply hose and the pistol nozzle side is detected by the control unit.

[0007]

Since the present invention comprises such means, it operates as follows. In this fuel refueling vehicle, the fuel oil loaded in the tank passes through a refueling pipe in which refueling equipment is arranged, and then through a manually operated switching valve, a first refueling hose having a pressure refueling nozzle or a pistol. Second with nozzle
The aircraft is refueled with one of the refueling hoses. When refueling a large aircraft, first the switching valve
The refueling hose and the pressure refueling nozzle side are opened, the second refueling hose and the pistol nozzle side are closed, and a manual switching operation is performed. Then, the pressure refueling nozzle is tightly connected to the refueling port of the aircraft, and during refueling, the remote control device is held and the control valve of the refueling pipe continues to be opened.

Next, when refueling a small aircraft, the switching valve is first manually switched by closing the first refueling hose and the pressure refueling nozzle side and opening the second refueling hose and the pistol nozzle side. The control valve of the oil supply pipe can be automatically opened by the detection by. Then, refueling is started, and the pistol nozzle is held and the open operation is continued during refueling. In this way, when refueling with the pistol nozzle, the control valve of the refueling pipe can be automatically opened, and it is not necessary to hold the remote control device and continue to open the control valve during refueling. Therefore, for refueling, it is sufficient to hold only the pistol nozzle and continue the opening operation, and the workability is improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. The drawings show an embodiment of the invention,
FIG. 1 is an explanatory view of a refueling pipe, refueling equipment, a switching valve, a remote control device, a control unit, etc., FIG. 2 (1) is a schematic plan view of the whole, and FIG. 2 (2) is a whole. FIG. FIG. 3 is a cross-sectional view of the control valve, FIG. 4 (1) is a front view of a three-way valve that is a switching valve, and FIG. 4 (2) is a schematic plan view showing a state of refueling an aircraft by a fuel refueling vehicle. It is a figure.

First, this type of fuel-fueled vehicle will be outlined. In this fuel refueling vehicle 1, fuel oil loaded in a vehicle-mounted tank 2 is distributed to a bottom valve 3 of the tank 2, a pump 4, a filter or filter separator 5, a refueling device 7 such as a flow meter 6 as a meter. After passing through the lubrication pipe 8
A pressure oil supply nozzle 9 is attached to the tip via a manually operated switching valve.
The aircraft 13 is refueled by either the first refueling hose 10 provided with the above or the second refueling hose 12 provided with the pistol nozzle 11 at the tip. That is, the fuel refueling vehicle 1 is of a dual-purpose type capable of refueling both the large aircraft 13 and the small aircraft 13, and is mainly used at local airports and the like.

First, in detail, in the oil supply pipe 8 in the machine room 14 of the fuel tank truck 1, from the upstream side to the downstream side, as shown in FIG.
5, a pump 4, a control valve 16, a filter separator 5, a flow meter 6, etc. are provided in this order, and a three-way valve 17 serving as a switching valve is provided at the downstream end thereof. Between the upstream of the line strainer 15 and the downstream of the pump 4, a bypass pipe 19 having a bypass valve 18 is provided in parallel with the oil supply pipe 8. Therefore, the fuel oil loaded in the tank 2 is filtered from the bottom valve 3 of the tank 2 through the line strainer 15, sucked by the pump 4 and pressure-fed, and passed through the open control valve 16 described later, and then the filter. It is cleaned by the separator 5. Then, the fuel oil passes through such oil supply equipment 7 of the oil supply pipe 8 and reaches a three-way valve 17 which is a switching valve provided at the downstream end of the oil supply pipe 8 and is branched by a manual switching operation of the three-way valve 17. First oil supply hose 10 or second oil supply hose 1 provided in parallel
The aircraft 13 is refueled from either of the two.

As described above, in the illustrated example, the fuel oil from the oil supply pipe 8 is supplied to the first oil supply hose 10 and the pressure oil supply nozzle 9.
A three-way valve 17 is provided as a manually operated switching valve that switches between the side, the second fuel supply hose 12, and the pistol nozzle 11. This three-way valve 17 is provided with an additional switching handle D as shown in FIG. 4 (1).
1st oil supply hose 1 via the flange E by manual operation of
0 or the port on the pipe F side to the pressure refueling nozzle 9 is opened or closed, and correspondingly, the port on the pipe H side to the second refueling hose 12 or the pistol nozzle 11 via the flange G is closed or opened. Each is designed to be switched.

The first oil supply hose 10 and the second oil supply hose 12
Is wound around the hose reels 20 and 21 in the machine room 14 when stored, and is pulled out from the hose reels 20 and 21 after opening the doors 22 and 23 when not stored, that is, when refueling. Then, it is taken out of the machine room 14 from the tip side to the aircraft 13. A pressure refueling nozzle 9 is provided at the tip of the first refueling hose 10, and a pistol nozzle 11 is provided at the tip of the second refueling hose 12, respectively. The pressure refueling nozzle 9 can be tightly connected, that is, can be fixedly connected to the refueling port 24 (see FIG. 4) of the large aircraft 13, and is provided with a valve that is kept open after the tightness. Also, the pistol nozzle 11
Can be connected to a fuel filler port (not shown) of a small aircraft 13 by holding it by hand, and can be opened only while holding the grip portion by hand and closed when the hand is released. ,
A manual valve with a spring is attached.

Further, in this fuel refueling vehicle 1, a control valve 16 provided in the middle of the refueling pipe 8 is further provided.
And a remote control device 25 capable of opening and closing the control valve 16 by remote manual operation, and a control section C capable of detecting the switching state of the three-way valve 17 which is a switching valve and capable of opening and closing the control valve 16. It becomes. Control valve 1
6 can be opened only when an opening operation is performed by the remote operation device 25, or when an opening switching of the three-way valve 17, which is a switching valve, to the second oil supply hose 12 and the pistol nozzle 11 is detected by the control unit C.

Explaining these in detail, first, the control valve 16 is provided between the pump 4 and the filter separator 5 of the oil supply pipe 8 of the machine room 14 in consideration of safety.
The oil supply pipe 8 can be opened and closed as appropriate, and is opened and closed by the method shown in FIG. 3, for example. First, when the solenoid valve 26 is closed as shown in the figure, the fuel oil on the upstream side 28 of the valve body 27 has a port 29, an auxiliary pipe 30, a throttle valve 31, a branch pipe 32,
It flows into the valve chamber 34 on the back side of the valve body 27 via the port 33 and the like, and the upstream side 28 of the valve body 27 and the valve chamber 34 on the back side have the same pressure. Therefore, the valve body 27 is pressed and moved to the upstream side 28 by the urging force of the spring 35 interposed in the valve chamber 34, and closes the port 36 which is a valve hole as shown in the drawing. Thus, when the solenoid valve 26 is closed as shown, the control valve 16 is also closed,
The flow of fuel oil in the fuel supply pipe 8 is blocked.

On the other hand, when the solenoid valve 26 is switched from the illustrated closed state to the open state, the control valve 16 is also opened as follows. That is, the fuel oil on the upstream side 28 of the valve body 27 passes through the port 29, the auxiliary pipe 30, the throttle valve 31, the open solenoid valve 26, and the like, and from the port 37 at the lower end of the auxiliary pipe 30 to the downstream side of the oil supply pipe 8. Flows into side 38. The open flow passage cross-sectional area of the solenoid valve 26 is set larger than that of the throttle valve 31. Now, there is a pressure difference between the upstream side 28 and the back side valve chamber 34 of the valve body 27, and the valve body 27 is
The spring 35 is compressed against the biasing force of No. 5 and is further pressed and moved from the illustrated state to the valve chamber 34 side, that is, the downstream side 38. Therefore, the fuel oil in the valve chamber 34 is
It is pushed out from the port 37 to the downstream side 38 via the open solenoid valve 26, the lower end side of the auxiliary pipe 30, and the like. In this way, when the solenoid valve 26 is opened, the valve body 27 is pushed and moved to open the port 36 which is a valve hole, the control valve 16 is opened, and the fuel oil flows through the inside of the oil supply pipe 8 and the upstream side 28 To the downstream side 38. The control valve 16 is opened and closed in this way.

Next, such a control valve 16
The solenoid valve 26 attached to the switch can be switched by the remote control device 25 or the control unit C as follows. That is, as shown in FIG. 1, the electric circuit 40 between the power source 39 and the solenoid valve 26 is branched in parallel on the way, and an operation switch 42 is arranged on one side of the electric circuit 40 via a cable 41. The remote control device 25 includes the cable 41, the operation switch 42, and the cable reel 4 around which the cable 41 is wound.
3, a spring, a grip (not shown), and the like. The operation switch 42 of the remote control device 25 is turned on only while holding the grip portion by hand, and when the hand is released, the operation switch 42 is automatically turned off by the urging force of the interposed spring (illustration). Refer to the state of the)) structure, operation switch 4
When 2 is turned on, the solenoid valve 26 is energized and excited via the electric circuit 40, and the control valve 16 can be opened. That is, the operation switch 4 of the remote control device 25
The control valve 16 can be opened only while the ON operation of 2 is continued.

Next, the control unit C is a switch 44 in the illustrated example.
It consists of. The switch 44 is for switching the three-way valve 17 described above, that is, for the second refueling hose 12
Then, it is possible to detect the opening switching to the side of the pistol nozzle 11, and the contact is turned on by the detection to energize and excite the electromagnetic valve 26 so that the control valve 16 can be opened.

That is, as described above, the electric circuit 40 between the power source 39 and the solenoid valve 26 is branched in parallel on the way, and one side of the electric circuit 40 passes through the operation switch 42 and the remote operation device 25 side. However, the other side goes through the switch 44 of the control unit C. And the switch 44 is
As shown in FIG. 4 (1), it is attached to the three-way valve 17 via a bracket 45, and the switching handle D of the three-way valve 17 is switched to open the second oil supply hose 12 and the pistol nozzle 11 side. Then (in FIG. 1 and FIG. 4 (1), when a switching operation is performed from a state of displaying a solid line to a state of displaying an imaginary line), it is arranged to abut the switching handle D having such a position. ing. Thus, the switch 44 detects the open switching to the second fuel hose 12 and the pistol nozzle 11 side by the contact of the switching handle D in this way, and during that time, the normally-off contact is turned on. Therefore, the control valve 16 first becomes open by energizing and exciting the solenoid valve 26 while the operation switch 42 of the remote control device 25 is being turned on, and can be opened. While the switch 44 is on,
Similarly, the solenoid valve 26 is energized and excited to switch to the open state so that it can be opened. Reference numeral 46 in FIGS. 2 and 4 denotes a cab of the fuel refueling vehicle 1.

The present invention is constructed as described above. Then it becomes as follows. In this fuel refueling vehicle 1, the fuel oil loaded in the tank 2 is a refueling pipe in which refueling equipment 7 such as a bottom valve 3 of the tank 2, a control valve 16, a pump 4, a filter separator 5, a flow meter 6 is arranged. It is cleaned via 8 and reaches a three-way valve 17 which is a switching valve at a predetermined pressure while being cleaned. Then, through the three-way valve 17 that has been manually switched, either the first refueling hose 10 having the pressure refueling nozzle 9 or the second refueling hose 12 having the pistol nozzle 11 is used to refuel from the refueling port 24 to the aircraft. 1
Oil is supplied to the 3rd tank room.

When refueling a large aircraft 13, first, the door 22 of the machine room 14 is opened, the stored first refueling hose 10 is pulled out, and the pressure refueling nozzle 9 at the tip thereof is inserted into the aircraft 13. It is tightly connected to the fuel filler port 24. At the same time, the three-way valve 17 is opened by the first refueling hose 10 and the pressure refueling nozzle 9 side, closed by the second refueling hose 12 and the pistol nozzle 11 side, and manually switched by the switching handle D (FIGS. 1 and 4). (See the state of the solid line display in the figure (1)). Then, the remote control device 25 opens the control valve 16 of the oil supply pipe 8 to start high-pressure oil supply.

That is, when refueling is performed by the pressure refueling nozzle 9, the remote control device 25 opens the control valve 16, that is, turns on the operation switch 42, and the solenoid valve 26 is energized to open. The switching control valve 16 is also opened, the fuel oil is pumped through the oil supply pipe 8, and the oil supply from the first oil supply hose 10 and the pressure oil supply nozzle 9 is started. During refueling after the fact, remote control device 25
Is held by hand and the ON operation of the operation switch 42 is continued, so that the solenoid valve 26 and the control valve 16 are continuously opened. When the refueling of the required amount is completed, the solenoid valve 26 and the control valve 16 are closed by releasing the operation switch 42 of the remote control device 25.
The pressure oil supply nozzle 9 is released from the tightness, and the first oil supply hose 1
0 and stored in the machine room 14.

Next, when refueling a small aircraft 13, first the door 23 of the machine room 14 is opened, the second refueling hose 12 stored is pulled out, and the pistol nozzle 11 at its tip is held. , Refueling port 24 of aircraft 13. Along with this, the three-way valve 17 is connected to the first refueling hose 10
The pressure refueling nozzle 9 side is closed, and the second refueling hose 12
Then, the side of the pistol nozzle 11 is opened and a manual switching operation is performed by the switching handle D (see the state of imaginary line display in FIGS. 1 and 4 (1)). Then, this is detected by the switch 44 of the control unit C, and the contact point thereof is turned on, whereby the control valve 16 of the oil supply pipe 8 can be automatically opened.

That is, when refueling is performed by the pistol nozzle 11, in the illustrated example, the refueling port 24 of the aircraft 13 is used.
The pistol nozzle 11 connected to is opened while being held, and the switch 44 of the control unit C detects the manual switching operation by the switching handle D of the three-way valve 17, and the contact point is turned on. 26 is energized and switched to open, the control valve 16 is also opened, the fuel oil is pressure-fed in the oil supply pipe 8, and relatively low-pressure oil supply is started from the second oil supply hose 12 and the pistol nozzle 11.
During the subsequent refueling, the pistol nozzle 11 is held by hand and the opening operation is continued. When the refueling of the required amount is completed, the pistol nozzle 11 is closed and stored in the machine chamber 14 together with the second refueling hose 12, but the control handle C is operated by manually switching the switching handle D of the three-way valve 17. Switch 44
Contact of the solenoid valve turns off, the solenoid valve 26 and the control valve 16
Is closed.

Then, the fuel refueling vehicle 1 is as follows. That is, when refueling with the pistol nozzle 11, the control valve 16 of the refueling pipe 8 can be automatically opened, and like the above-described conventional example of this type,
During refueling, the operator does not have to keep turning on the operation switch 42 while holding the remote control device 25, and does not need to keep opening the control valve 16 with the operation switch 42 of the remote control device 25. Therefore, refueling by the pistol nozzle 11 only needs to continue the opening operation while holding only the pistol nozzle 11, and the workability is improved.

Although the three-way valve 17 is used as the switching valve in the illustrated embodiment, the present invention is not limited to this. For example, the downstream end of the refueling pipe 8 is branched into a pipe F to the first refueling hose 10 or the pressure refueling nozzle 9 side and a pipe H to the second refueling hose 12 or the pistol nozzle 11 side, and both pipes F are connected. , H may each be provided with a two-way valve. In other words, this two-way valve, which is a switching valve, is always manually switched by reversing its opening and closing,
Refueling may be performed by either the pressure refueling nozzle 9 or the pistol nozzle 11. In this case, the switch 44 of the control unit C is attached to the two-way valve of the pipe H on the side of the pistol nozzle 11, and when the open switching is detected, the electromagnetic valve 26 is opened and the control valve 16 can be opened.

[0027]

As described above, the fuel refueling vehicle according to the present invention is provided with the switching valve for the first refueling hose / pressure refueling nozzle side and the second refueling hose / pistol nozzle side, and A control unit that can detect the switching state and that can open and close the control valve is provided, so that not only when the remote operation device opens, but also when the control unit detects the switching of the switching valve to the second oil supply hose / pistol nozzle side. By automatically opening the control valve of the oil supply pipe, the following effects are exhibited.

That is, when refueling a small aircraft with a pistol nozzle, the work is simplified and the workability is improved. That is, in this fuel refueling vehicle, when refueling with the pistol nozzle, the control valve can be automatically opened, and it is necessary to continue to operate while holding the remote control device as in the conventional example of this kind described above. Instead, it is only necessary to operate while holding only the pistol nozzle, and workability is dramatically improved. As described above, the effects of the present invention are remarkably large, such as the problems existing in this type of conventional example are eliminated.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a fuel refueling vehicle according to the present invention, and its refueling piping, refueling equipment, switching valve, remote control device, control unit and the like.

2A and 2B show a fuel refueling vehicle of the same embodiment, FIG. 1A is a schematic plan view of the whole, and FIG. 2B is a schematic side view of the whole.

FIG. 3 is a sectional view of a control valve of the same embodiment.

FIG. 4 (1) is a front view of a three-way valve that is a switching valve of the same embodiment, and FIG. 4 (2) is a schematic plan view showing a refueling state of an aircraft by a fuel refueling vehicle of the same embodiment. .

[Explanation of symbols]

 1 Fuel Refueling Vehicle 2 Tank 3 Bottom Valve 4 Pump 5 Filter Separator (Filter) 6 Flow Meter (Measuring Instrument) 7 Refueling Equipment 8 Refueling Pipe 9 Pressure Refueling Nozzle 10 First Refueling Hose 11 Pistol Nozzle 12 Second Refueling Hose 13 Aircraft 16 control valve 17 three-way valve (switching valve) 25 remote control device C control unit

Claims (1)

[Claims] 1. A switching valve which is manually operated after fuel oil loaded in an on-vehicle tank is passed through a bottom valve of the tank and an oil supply pipe in which oil supply equipment such as a pump, a filter, and a measuring instrument are arranged. A fuel refueling vehicle for refueling an aircraft by means of either a first refueling hose having a pressure refueling nozzle or a second refueling hose having a pistol nozzle, which is provided in the middle of the refueling pipe. Control valve, a remote control device capable of opening and closing the control valve by remote manual operation, and a control unit capable of detecting the switching state of the switching valve and capable of opening and closing the control valve. When the control valve is opened by the remote control device,
Alternatively, the fuel refueling vehicle can be opened only when the switching of the switching valve to the second fuel supply hose and the pistol nozzle side is detected by the control unit.