JPS6112835B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a refueling device that includes a unit consisting of a refueling pump and a flow meter, three refueling nozzles each, and two refueling information displays such as the amount of refueling. When refueling tanks of different sizes at the same time, it is conceivable to equip the refueling system with multiple large and small pumps and flow meters and operate them selectively, but this configuration is costly and Supplying oil at a small flow rate using a large pump and flowmeter wastes a lot of driving power and causes large measurement errors. In view of the above points, this invention includes three units each consisting of a pump with the same capacity and a flow meter with the same capacity, and three refueling nozzles with different capacities, and these units can be selectively used alone or in combination as required. We have proposed a refueling device that can be used with a nozzle to provide the most effective and efficient refueling depending on the size of the tank to be refueled. 3 units consisting of 1 unit each, and 2
three indicators, and three refueling nozzles each having different capacities of large flow, medium flow, and small flow;
A conduit that connects all of the secondary side conduits of each of the flowmeters to the three oil supply nozzles, a plurality of switching valves inserted in this conduit, and all of the secondary side conduits of the flowmeters. a state in which the secondary side pipes of two of the flowmeters communicate with the large flow rate refueling nozzle or the medium flow rate refueling nozzle; means for switching and controlling said plurality of switching valves to selectively realize a state in which one secondary side pipe communicates with said medium flow rate refueling nozzle or said low flow rate refueling nozzle; and measurement from each of said flowmeters. It is characterized by comprising an arithmetic means for displaying the outputs alone or by adding them together on the display. The illustrated embodiment will be described below. In the figure, P
Reference numerals 1, P2, and P3 are oil supply pumps that suck up oil from an oil storage tank (not shown) and send it to oil supply lines 1 and 1, respectively.
Send on 2 and 3. Each oil supply pump P1, P2, P
3 have the same capacity (ability). M1, M2, M
3 is a flowmeter with the same ability to measure the amount of oil from each oil supply pump P1, P2, P3, and flowmeter M
From 1, M2, and M3, signal S according to the measured oil amount
1, S2, and S3 are output. Mo1, Mo2,
Mo3 is a motor that drives the oil supply pumps P1, P2, and P3, and is driven by a signal from the control section 4, which will be described later. 5a, 6a, 7a are flow meters M
1, M2, and M3, the pipe 5a is connected to a three-way valve V5, which is connected on one side to the nozzle N1 via the pipe 5b, and on the other side to the nozzle N1. 5c to the nozzle N3. A pipe line 5d is connected to the pipe line 5a, and this pipe line 5
d is connected on the one hand to conduit 6a via valve V1 and on the other hand to conduit 7b via valve V3. This line 7b has a valve V2 on one side;
It is connected via a conduit 6b to a conduit 6a, and on the other hand to a conduit 7a. The pipe line 7a is a valve V4,
It is connected to the nozzle N2 via the conduit 7c. Nozzles N1, N2, and N3 are for small flow, medium flow, and large flow, respectively. The valves V1 to V5 are controlled to open and close by signals from the control section 4, as will be described later, to switch and connect the respective pipe lines 5a to 7c. That is, by selectively related opening and closing of these valves, oil from one or more of the flow meters M1, M2, M3 is combined and fed through a predetermined nozzle N1, N2, N3. be able to. H1, H2, and H3 are oil supply nozzles N1 and H3, respectively.
Nozzle hooks for N2 and N3 are installed in the refueling machine housing (not shown), and are connected to the refueling nozzles N1 and N3.
When N2 and N3 are removed from these nozzle hooks H1, H2 and H3, the nozzle switches SW1 and SW
2, SW3 transmits a signal (nozzle signal) to the control unit 4. 8 is a calculation unit 9, which uses one or more of the output signals (metering signals) S1, S2, S3 from the flowmeters M1, M2, M3 as input signals S'1, S'2, S'3;
Which signal is input to the switching section 9' is determined by a designated signal from the control section 4. The calculation unit 9 outputs the input signal S'1, S'2, or S'3 as it is, or if a plurality of signals are input, adds them together and outputs a signal NS corresponding to the total oil supply amount. This signal NS is the display unit 10
, and the value is displayed digitally, for example. The other arithmetic unit 9' also receives the input signal S'1 or
S'2 or S'3 is input as it is, or if a plurality of signals are input, they are added together and a signal NS' corresponding to the total amount of oil supplied is output. This signal NS' is input to the display 10' and digitally displayed. Display 10 is a first display, and 10' is a second display. The indicator 10 is arranged, for example, on one side of a housing (not shown) of a refueling machine, and the nozzles N1 and N3 are provided on that side, and the indicator 10' is arranged on the opposite side of the housing of the refueling machine. , a nozzle N2 is provided on that side. When nozzle N1 or N3 is used, information such as the amount of oil supplied by that nozzle is displayed on the display 10, and when nozzle N2 is used, the oil supply information is displayed on the display 10'. Ru. Now, for example, apply the small flow nozzle N1 to the nozzle H1.
When the nozzle switch SW1 is removed, the nozzle switch SW1 generates a signal, this signal is input to the control unit 4, and the signal from the control unit 4 operates only the pump P1, closes the valves V1, V2, and V3, and closes the valve V4. opened,
Valve V5 connects conduit 5a from flowmeter M1 to conduit 5b, and oil supply at a small flow rate (flow rate due to operation of one pump P1) is performed. At this time, the output signal S1 of the flowmeter M1 is
The signal is activated by the operation of the switching section 8 based on the signal from
As S'1, the corresponding numerical value (oil supply amount) is inputted to the display 10 via the calculation unit 9 and displayed. While refueling with nozzle N1, nozzle N
3 cannot be refueled, but the nozzle N2 on the opposite side
Refueling is possible. That is, nozzle N2
When the nozzle switch SW2 is removed, a signal from the nozzle switch SW2 is input to the control unit 4, and the pump P3 is activated. At this time, valve V2 is closed and valve V4 is open, so the flow rate is small (flow rate due to the operation of one pump P3).
refueling will be carried out. In this case, when the pump P2 is also operated and the valve V2 is opened in response to a signal from the control section 4, oil supply at a medium flow rate by the pumps P2 and P3 is performed by the nozzle N2. By using a large flow nozzle N3 instead of the small flow nozzle N1 and operating three pumps P1, P2, and P3, a large flow rate can be supplied.
If P2 is activated, a medium flow rate of oil can be supplied. The selection between the large flow rate and the medium flow rate is performed in the control section 4 using an appropriate manual selection mechanism (not shown). In either case, the amount of refueling is displayed on the first display 10. When lubricating at a large flow rate with the large flow nozzle N3, it is impossible to refuel with the medium flow nozzle N2, and when lubricating at a medium flow rate with the large flow nozzle N3, it is not possible to refuel with the medium flow nozzle N2. Lubrication at a small flow rate is possible. The following table shows the opening/closing of the valve, the operation of the pump, the connection state of the switching section of the display system, and whether or not the nozzle can be used in the second display example in each of the above usage modes.
In the table, in the switching section, for example, S1→S'1 closed indicates that input signal S1 is output as signal S'1, and 2S→2S' open indicates that input signal 2S is not present.

【table】

[Table] The following table shows valve opening/closing, pump operation, and display system switching parts when medium-flow or small-flow lubrication is performed using medium-flow nozzle N2 first on the second display 10' side. , and whether the nozzle N1 or N3 can be used on the first display side.

【table】

[Table] As described above, according to the present invention, the flow rate (velocity) can be selected depending on the size of the tank to be refueled, and refueling work can be performed efficiently. In addition, since we use pumps of the same capacity and flowmeters of the same capacity, we can achieve standardization of parts, avoid measurement errors when using large pump flowmeters for small flow rates, and drive power It has the advantage of requiring less consumption.

[Brief explanation of the drawing]

The figure is a schematic diagram showing the configuration of an embodiment of the present invention. P1, P2, P3...Pump, M1, M2, M
3...Flowmeter, N1, N2, N3...Nozzle, H
1, H2, H3...Nozzle hook, SW1, SW
2, SW3...Nozzle switch, V1, V2, V
3, V4, V5... Valve, 1, 2, 3, 5a, 5
b, 5c, 6a, 6b, 6c, 7a, 7b, 7c
... Pipe line, 4 ... Control section, 8 ... Switching section, 9,
9'...Arithmetic unit, 10,10'...Display unit.

Claims (1)

[Claims] 1. 3 units each consisting of a refueling pump of the same capacity and a flowmeter of the same capacity; 2.
three indicators, and three refueling nozzles each having different capacities of large flow, medium flow, and small flow;
A conduit that connects all of the secondary side conduits of each of the flowmeters to the three oil supply nozzles, a plurality of switching valves inserted in this conduit, and all of the secondary side conduits of the flowmeters. a state in which the secondary side pipes of two of the flowmeters communicate with the large flow rate refueling nozzle or the medium flow rate refueling nozzle; means for switching and controlling said plurality of switching valves to selectively realize a state in which one secondary side pipe communicates with said medium flow rate refueling nozzle or said low flow rate refueling nozzle; and measurement from each of said flowmeters. A refueling device comprising a calculation means for displaying the output alone or in addition on the display.