KR850002468Y1 - Supply apparatus for liquid - Google Patents

Abstract

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Description

Metering device

1 is a schematic configuration diagram showing an embodiment of the present invention.

2 is an electrical circuit diagram thereof.

3 (a), 3 (b) and 3 (c) are diagrams showing a state in which the loading arm is inserted into the tank.

4 is a diagram showing a relationship between a liquid supply time and a liquid supply flow rate.

The present invention relates to a fixed amount liquid supplying device for supplying liquid to a tank car.

In general, in a tank car (tank car, tank car), the tip of the loading arm is inserted into the liquid inlet of the tank car, and the liquid is supplied into the storage container (tank) of the tank car through the loading arm. By the way, in the case where the kind of liquid mentioned above is highly flammable, for example, gasoline, etc., when liquid supply is suddenly performed in a container which is suddenly flowed at a high flow rate, bubbles are generated together with the liquid, and static electricity is generated by the foam. There was a risk of gasoline ignition. Accordingly, as a method of solving such a problem, the flow rate is set to be within 1 m / sec during the initial liquid supply period until the tip exit of the loading arm described above is locked to the liquid level.

Therefore, in the conventional metering liquid supplying device, for example, during the initial liquid supply period, the metering valve is opened halfway (hereinafter referred to as half opening) so that the flow rate is within 1 m / sec, and then the metering valve which has been previously opened is completely opened (hereinafter " It is known that the so-called two-stage liquid feeding method of supplying liquid rapidly (expansion) ". In this type of device, there is a method of measuring and regulating the initial liquid supply period from the flow meter to the opening of the metered valve, and then the metered valve. The half of and the expansion control are performed.

However, in the apparatus using the timer as described above, if the set value (initial liquid supply period) of the timer described above is set in the tank car with a small capacity, the tip of the loading arm is wound in the liquid surface when the liquid is supplied to the tank car with a large capacity. Since the flow rate rises before losing, it is necessary to set the set timer to the tank car with a large capacity. In such a case, for example, when the tank is supplied with a small tank, There was a problem that the liquid supply time was long and the liquid supply could not be efficiently carried out.

This invention is made | formed in view of the above-mentioned situation, and an object of this invention is to provide the fixed quantity water supply apparatus which can supply liquid to a tank car of a different capacity efficiently.

Next, an embodiment of the present invention will be described in detail with reference to the drawings. (1) in the figure is a pump, which pumps liquid such as gasoline in a storage tank (not shown) to the feed pipe (2). The strainer 3, the flowmeter 4, and the valve 5 are provided in the conveyance pipe 2 mentioned above, and the loading arm 6 is further provided in the front-end | tip. The leading end of the loading arm 6 is inserted into the tank (container) 8 through the liquid inlet port of the tank car 7. The valve 5 is provided with a solenoid 10 which opens the valve 5 and a solenoid 11 which opens when the electric signal is input from the control unit 9. The flowmeter 4 described above is provided with a generator 12 which always outputs a flow signal to the control unit 9, and a switch box 13 is connected to the control unit 9. The switch box 13 includes a conversion switch (converted into three types of 1 kL, 2 kL, and 4 kL in the present embodiment) 14 to be converted according to the capacity of the tank car 7, the start switch 15, and the emergency stop. The switch 16 is provided. Then, the control unit 9, when the flow rate signal output from the oscillator 12 of the flowmeter 4 is at a predetermined level Q ₁ (a state close to the degree of filling of the liquid in the tank 8), a switch (to be described later) A signal for turning off 19 is output, and when the flow rate signal output from the electric generator 12 reaches a predetermined level Q ₂ (the state in which the liquid is filled in the tank 8), it will be described later. Signals for turning off the switches 17 and 18 and the movable electromagnetic switch 20 are output.

Next, the electric circuit of the above apparatus will be described. This electric circuit is comprised from the circuit which opens the valve 5, and the circuit which expands the valve 5. As shown in FIG. In the circuit for half-opening the valve 5, the switch 17 is turned on when the star art switch 15 of the switch box 13 is turned on, and an electric signal is input to the solenoid 10 so that the valve ( 5) is supposed to oppose. In addition, when the star art switch 15 is turned on, the circuit for deploying the valve 5 is configured to turn on the switch 18, and the timer T is changed by the conversion operation of the conversion switch 14 described above. ₁ ), (T ₂ ), (T ₃ ) is converted into one of the settings, and if the signal is output from the timer of any one of the timers (T ₁ ), (T ₂ ), (T ₃ ), the switch (S ₁ ), (S ₂ ), and (S ₃ ), the switches corresponding to the timers T ₁ , T ₂ , and T ₃ , respectively, are turned on so that the switches (S ₁ ), (S ₂ ), when any one of (S ₃ ) is turned on, the solenoid 11 mentioned above is expanded. By the way, the above-described timers T ₁ , T ₂ , and T ₃ have different time periods for outputting signals in response to the capacity of the tank car 7 described above. That is, the timer T ₁ described above is the initial liquid supply period until the outlet of the loading arm 6 is submerged in the liquid level as shown in FIG. 3 (a) when the capacity of the tank 8 is ₁ ms. The signal is output when only (H ₁ ) has elapsed. In addition, the timer T ₂ is the initial liquid supply period H until the outlet of the loading arm 6 is submerged in the liquid level as shown in FIG. 3 (b) when the capacity of the tank 8 is ₂ ms. ₂ ) It is supposed to output a signal when only time passes. Then, the timer T ₃ is the initial liquid supply period H until the outlet of the loading arm 6 is submerged in the liquid level as shown in FIG. 3 (c) when the capacity of the tank 8 is 4 ms. ₃ ) If only elapsed, signal is output. The relationship between the initial liquid supply periods (H ₁ ), (H ₂ ), and (H ₃ ) described above is (H ₁ ) <(H ₂ ) <(H ₃ ). In addition, a switch 19 for operating the solenoid 11 to close the valve 5 is connected between the switches S ₁ , S ₂ , S ₃ , and the solenoid 11. The switch 19, being the signal output from the oscillator 12 of the electricity meter (4) inputted to the control unit (9), within a predetermined level (Q ₁₎ (tank 8 close to the degree of full liquid State), the energization of the solenoid 11 is cut off. And the switch 20 is arrange | positioned between the control part 9 and the pump 1.

Next, the operation of the fixed-quantity feeding device configured as described above is as follows. First, when the tank car 7 having a capacity of 1 kPa is stopped at a predetermined place, the loading arm 6 is inserted into the tank 8 of the tank car 7, and the changeover switch of the switch box 13 is used. Set (14) to 1 ms. Then, when the start switch 15 is turned on, the switch 17 is turned on, the solenoid 10 is operated, the valve 5 is opened, and the switch 18 is turned on and the timer T ₁ is turned on. ) Starts operation. When the start switch 15 is turned on, the movable electromagnetic switch 20 is turned on to operate the pump 1 to supply liquid to the transfer pipe 2. In this way, when the liquid supply is performed in the feed pipe 2, the liquid supply is started in the tank 8 of the tank car 7 from the front end of the loading arm 6. In this case, the flow rate of the liquid is suppressed to within 1 m / sec because the valve 5 that is half is transmitted. Moreover, the flow rate in the transfer pipe 2 is controlled from the oscillator 12 of the flowmeter 4 to the controller 9. An electrical signal is input. In this way, the liquid supply is performed in the tank 8, so that, as shown in FIG. 3 (a), when the tip exit of the loading arm 6 is wound in the liquid surface, that is, only the initial liquid supply period H ₁ has elapsed. and the switch from the electrical timer (T ₁₎ is the output signal to the (S ₁₎ turns on the switch (S _1), whereby the solenoid 11 is activated by an electric valve (5) is deployed along. In this way, when the valve 5 expands, as shown in FIG. 4, the amount of liquid supply in the initial liquid supply period H ₁ increases. Then, when the liquid supply is performed in the tank 8, and the tank is in a state close to the fullness, the control unit 9 inputs an electric signal to the switch 19 so that the switch 19 is turned off, and accordingly The energization to one solenoid 11 is cut off, and the valve 5 turns into a half state from the expanded state. When this happens, when the liquid in the tank 8 becomes full, an electric signal is output from the oscillator 12 of the flowmeter 4 to the control unit 9, whereby the switches 17 and 18 are turned off and In addition to closing one valve 5, the movable impulse switch 20 is turned off to stop the pump 1. As a result, the liquid supply to the tank 8 is stopped.

And, if the capacity of the tank (8) 2kℓ, 4kℓ, the initial Irrigation period _{(H 2), (H 3} ) as this be different, and the other is operated in the same manner as in 1kℓ.

As described in detail above, according to the present invention, there is provided a loading arm in which a liquid supply amount to a container is controlled by a valve, a conversion switch for converting according to the capacity of the container described above, and As it is the structure which has a plurality of timers setting the time from half-opening to development, not only can supply liquid to a container with a different capacity efficiently, but also it is the structure which a changeover switch and a timer interlocked with each other, and change the setting of a timer ( Even if the timer is forgotten according to the capacity of the tank), there is an effect that the valve does not extend before the tip of the loading arm is locked in the liquid level.

Claims (1)

In the fixed quantity liquid supply device provided with the loading arm 6 which supplies liquid to a container, and the valve 5 which controls the flow volume of the liquid which flows through a loading arm, the valve 5 supplies liquid at the flow volume less than normal flow volume. It consists of a timer T ₁ , T ₂ , T ₃ for setting the period of plural sets to flow, and a changeover switch 14 for selecting one of the plural sets of periods, and is normally supplied by the period selected by this conversion switch at the beginning of the liquid supply A metering liquid supply device characterized in that the liquid is supplied at a flow rate smaller than the flow rate.