JPH07110679B2 - Liquid supply device - Google Patents

Description

TECHNICAL FIELD The present invention relates to two types of liquids of different types and a device for supplying the two types of liquids at a constant ratio.

(Prior Art) Due to the diversification of vehicle types, in addition to regular gasoline and high-octane gasoline, demand for gasoline having an intermediate octane is also increasing.

In order to respond to such a trend, there has been proposed regular gasoline and high octane gasoline, and a liquid supply device capable of supplying these two types at a constant ratio with a single liquid supply device (Japanese Patent Publication No. Sho 49). No. 40249), there is a problem that the cost of the apparatus increases because a display means is required for each liquid type.

(Purpose) The present invention has been made in view of such a problem, and an object of the present invention is to set the liquid supply amounts of three types of liquid to 1
Another object of the present invention is to provide a novel liquid supply device capable of displaying by one display means.

(Summary of the Invention) That is, a feature of the present invention is that a branch pipe is connected to a discharge port of a pump that feeds a first liquid through a flow rate measuring unit, and one of the discharge ports is connected to the first discharge port. The liquid supply nozzle and the other discharge port are connected to one inlet of the stoichiometric supply means to which the third liquid supply nozzle is connected to the outlet, and the discharge of the pump for supplying the second liquid. A branch pipe is connected to the outlet via a flow rate measuring means, one of the outlets is connected to the second liquid supply nozzle, and the other outlet is connected to the other inlet of the constant ratio supply means, and The flow rate signals from the respective flow rate measuring means are added together and then output to the common display means, and when the plurality of nozzles are removed, the pump in operation is stopped, and the control means for activating the notification means is provided, Three kinds of liquid supply amount can be measured by two flow rate measuring means However, there is a point that the display can be made without any error by one display means.

(Examples) Therefore, the details of the present invention will be described below based on illustrated examples.

FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 is a flow meter having a flow pulse transmitter 2.
Is connected to the discharge port of the first pump 4 that communicates with the liquid type tank of No. 1, and is also connected to the first liquid supply nozzle 6 via the branch pipe 5.

Reference numeral 11 is a flow meter having a flow pulse generator 12, which is connected to the discharge port of the second pump 14 which communicates with the second liquid species tank,
Further, it is connected to the second liquid supply nozzle 16 via a branch pipe 15.

Reference numeral 30 denotes a stoichiometric supply device, and as shown in FIG. 2, two inflow passages 32, 33 communicating with a merging chamber 31 where two kinds of liquids merge.
In addition to having the discharge port 34, the inflow passages 32, 33 are provided with conical bodies 35, 36 having narrowed inlets 32a, 33a. The cones 35 and 36 can be advanced and retracted in the axial direction by gears 52 and 53 rotated by knobs 50 and 51, and the supply ratio can be varied by an external operation. The ring-shaped baffle plates 37, 38 having through holes 37a, 38a in the central portion so as to penetrate the conical bodies 35, 36 are disposed on the inlet side by elastic force by springs 39, 40 so as to be movable in the axial direction. In addition, check valves 43 and 44, which are normally urged by springs 41 and 42 so as to close the inflow passages 32 and 33, are installed on the side of the merging chamber 31, and these check valves 43 and 44 always flow. The pressure release valves 47 and 48 biased by springs 45 and 46 are provided on the outlet 34 side, and the respective inlets 32a and 33a are connected to the first and second inlets via the branch pipes 5 and 15, respectively. It is connected to the flowmeters 1 and 11, and the outlet 34 is connected to the third liquid supply nozzle 26.

Returning to FIG. 1 again, reference numeral 17 in the drawing is a control device, and as shown in FIG. 3, the first, second, and third liquid supply nozzles 6, 16,
While the signals from the nozzle switches 7, 8 and 9 operated by 26 and the flow rate pulse signals from the flow rate pulse transmitters 2 and 12 are input, the total integrated value of the pulse signals from each flow rate pulse transmitters 2 and 12 is input. It outputs to the display 18, and when one of the liquid supply nozzles is removed, the other liquid supply nozzle is detected to stop the operation of the pump and informs that it is a "malfunction". It is configured to emanate from vessel 19. In the figure, reference numerals 3 and 13 indicate pump motors, respectively.

Next, the operation of the apparatus thus configured will be described based on the flowcharts shown in FIGS.

When the first liquid supply nozzle 6 is removed to supply the first liquid type,
The nozzle switch 7 attached to this operates and outputs a signal (step 4 in FIG. 4). As a result, the indicator 18 is reset to zero, and at the same time, the first pump 4 that feeds the first liquid type is activated (FIG. 5, Step B).

When the liquid supply is started in this state, a pulse proportional to the flow rate is output from the flow rate pulse transmitter 2 of the flowmeter 1 communicating with the first pump 4, and the liquid supply amount is displayed on the display 18 (step C). . In the liquid supply process, the first liquid type is supplied from the pump 4 to the stoichiometric supply device 30 via the branch pipe 5, but the third liquid supply nozzle 26 and the second flow path 33 are checked. Since the valve 4 is closed, the third liquid supply nozzle 26 and the second liquid supply nozzle 26
It does not flow into the flow path 33.

During such a liquid supply operation, the second and third liquid supply nozzles 16, 26
When the switch is removed, the nozzle switches 8 and 9 attached to these
Is activated and outputs a signal (step E, F),
The control device 17 stops the first pump 4 that is currently in operation, and at the same time, issues an erroneous operation from the alarm device 19 (step
To, Chi). By this notification, the second and third liquid supply nozzles 1
When 6 and 26 are reengaged and the nozzle switches 8 and 9 are turned off (step, n), the first pump 4 starts to operate again and restarts the liquid supply, and is added to the liquid supply amount before the stop. Display and stop notification at the same time (step, w).

In this way, when the supply of the predetermined amount of liquid is completed and the first liquid supply nozzle 6 is returned to the nozzle hook, the nozzle switch 7 is turned off.
It becomes F (step D), and the first pump 4 stops (step W).

Further, when the second liquid type is supplied, the liquid supply is performed through the same process as the above-described first liquid type supply (fourth type).
Figure step power, Fig. 6 step yo-o).

On the other hand, when the third nozzle 26 is removed to supply the third liquid type in which the first and second liquids are mixed, the nozzle switch 9 is turned on (step in FIG. 4), and the first pump 4 , And the second pump 14 operate together, and at the same time, the display 18 returns to zero (stepma). When the liquid supply is started in this state, the liquids of the first and second liquid types sent from the pumps 4 and 14 are
They flow into the stoichiometric feeder 30 via the first and second flow meters 1 and 11, respectively. The liquid that has flowed in from the inflow ports 32a, 33a flows out from the third liquid supply nozzle 26 via the merging chamber 31 by opening the check valves 43, 44 against the springs 41, 42.
In this process, the first and second liquid species baffle plates 37, 38 until the respective liquid pressures and the reaction forces of springs 39, 40 are parallel.
Are moved to the outflow side and flow into the merging chamber 31 at a constant ratio. Needless to say, since the first and second liquid supply nozzles 6 and 16 are closed, all the fluid that has flowed into the flowmeters 1 and 14 is supplied to the third liquid supply nozzle 26 via the stoichiometric supply device 30. It will flow in.

The outflow amount of each of these liquid types is measured by the first and second flowmeters 4 and 14, and pulse signals are output from the flow rate pulse transmitters 2 and 12 attached to the flowmeters. Each pulse signal is added as a liquid supply amount, for example, the first
Where the liquid octane number is a, the liquid supply amount is x, the second liquid octane number is b, and the liquid supply amount is y, then (ax + by) / (x
The octane number is displayed on the display 18 by the calculation (+ y) (step K). In this state, when the first or second liquid supply nozzles 6 and 16 are removed, the nozzle switches 7 and 8 attached to them are turned on (step C,
D), both the first and second pumps stop at the same time, and at the same time, the "malfunction" is issued from the alarm device 19 (steps A and S). By this notification, the first and second liquid supply nozzles 6 and 16 are returned to the nozzle hooks, and the nozzle switches 7 and 8 attached to them are turned off (step key,
U), the first and second pumps 4 and 14 start to operate again, the supply of the third liquid type is restarted, and at the same time, the notification is stopped (steps M and M). At the stage when the nozzle switch 9 is turned off after the supply of the third liquid type is completed (step
F), the first and second pumps 4 and 14 stop. (Steppe).

When the liquid supply ratio calculated by the control device 17 and displayed on the display 18, that is, the octane number changes from the predetermined value, the knobs 50 and 51 are rotated to move the cones 35 and 36 forward and backward. The liquid supply ratio can be adjusted by.

Also, when the liquid pressure in the hose rises due to temperature rise, etc. when the liquid supply is stopped, the pressure release valves 47, 48 cause the spring 45,
Moves against 46, causing liquid in the hose to flow back into the tank to prevent excessive pressure buildup.

(Effect) As described above, in the present invention, the branch pipe is connected to the discharge port of the pump for sending the first liquid through the flow rate measuring means, and one of the discharge ports is connected to the first liquid supply. The nozzle and the other discharge port are connected to one of the inlets of the stoichiometric supply means to which the third liquid supply nozzle is connected to the outlet, and to the discharge port of the pump for supplying the second liquid. The branch pipe is connected through the flow rate measuring means, one of the discharge ports is connected to the second liquid supply nozzle, and the other discharge port is connected to the other inflow port of the constant ratio supply means, and each flow rate is measured. Since the flow rate signals from the means are summed up and output to the common display means, the control means is provided for stopping the pump in operation when a plurality of nozzles are removed and for activating the notification means. Measures the amount of liquid supplied by two types of flow rate measurement means Then, not only the display can be displayed by one display means to simplify the structure, but also when the liquid supply nozzle is removed during the liquid supply, the liquid supply is stopped and a notification is given to notify the measurement error. It is possible to reliably prevent the occurrence.

[Brief description of drawings]

FIG. 1 is a block diagram of an apparatus showing an embodiment of the present invention, FIG. 2 is a sectional view showing an embodiment of a constant ratio feeder, and FIG. 3 is a block diagram showing an embodiment of a control device, and 4, 5, 6, and 7 are flow charts showing the operation of the above-mentioned device. 1, 11 ...... Flowmeter 2,12 …… Flow pulse generator 4,14 …… Pump 6,16,26 …… Liquid supply nozzle 17 …… Control device, 18 …… Display 19 …… Informer 30 …… … Constant ratio feeder

Claims (1)

[Claims] 1. A branch pipe is connected to a discharge port of a pump for feeding a first liquid through a flow rate measuring means, and one of the discharge ports is connected to a first liquid supply nozzle and the other discharge port. Is connected to one of the inlets of the stoichiometric supply means in which the third liquid supply nozzle is connected to the outlet, and the branch pipe is connected to the discharge port of the pump for supplying the second liquid via the flow rate measuring means. One of the discharge ports is connected to the second liquid supply nozzle, the other discharge port is connected to the other inflow port of the constant ratio supply means, and the flow rate signals from the respective flow rate measurement means are added. Then, the liquid supply device is provided with a control means for outputting to a common display means, stopping the pump in operation when a plurality of nozzles are removed, and activating the notification means.