JP3662030B2 - Mixture prevention system - Google Patents

Description

[0001]
【Technical field】
The present invention relates to a liquid mixture prevention system for supplying liquid from a tank truck to a storage tank such as a service station. More specifically, the liquid type loaded in the hatch of the tank truck and the liquid tank of the service station when liquid is supplied. It is related with the liquid mixture prevention system which prevents that the liquid kind of this mixes.
[0002]
[Prior art]
Tank trucks are equipped with tanks divided into multiple hatches with different capacities of 4 kiloliters, 2 kiloliters, and 1 kiloliter, and each tank usually has regular gasoline, high-octane gasoline, kerosene and light oil. It accommodates and transports dissimilar liquids such as. These liquid types are unloaded in the underground storage tank provided for each liquid type at the service station, but since the unloading operation is performed manually, there is a risk of mixing different liquids by mistake. For unloading from a tank truck to a storage tank, a connection hose is connected between the discharge valve provided for each hatch of the tank truck and a fuel supply valve provided in the storage tank, and the liquid supply is made via the connection hose. To do. Therefore, if there is a connection difference in the connection hose, it will be mixed, and the mixed liquid type may be discarded as waste liquid, and there may be a risk of fire.
[0003]
In order to prevent such mixed liquid, conventionally, a special coupler specified for each liquid type is attached to the valve opening of each valve on the tank lorry vehicle side and the liquid storage tank side, and the connection hose is mistakenly connected. So that there is no. However, in this method, the special coupler may remain fixed on the liquid storage tank side of the service station, but the tank lorry vehicle side also changes the liquid type for each hatch according to the specifications when loading, so the special coupler also has a liquid type. It was necessary to put it on again every time it changed. This requires man-hours for the operation, and the operation is complicated, and the special coupler is required not only for the tank truck and the liquid tank, but also for the connecting hose. Since the economic burden is very large, there are few examples, and most of them are not equipped with special couplers.
[0004]
【the purpose】
The present invention has been made in view of the above-mentioned problems, and from the tank truck loaded with the liquid type according to the hatch, the same liquid type is stored in the storage tank, and the liquid mixture is reliably mixed without artificially judging the liquid type. The purpose of this invention is to provide a liquid mixture prevention system that is easy to operate and inexpensive.
[0005]
【Constitution】
In order to achieve the above object, the present invention provides a ground monitor for setting and displaying liquid type information for each hatch unloaded from a tank lorry vehicle registered in advance based on reservation information reserved in advance, and a hatch of the tank lorry vehicle. The liquid type information for each tank is recorded, and the marker for each hatch that is detachably mounted in the vicinity of each liquid supply port of the tank truck and the marker taken out from the tank truck are inserted into the marker. The liquid type information detected, and the liquid type information transmitted to the ground monitor; when the liquid type information from the detector matches the set liquid type of the ground monitor, the liquid type is stored. A liquid supply nozzle selecting device for selecting a liquid supply nozzle that communicates with the tank, and a lock device disposed in each liquid supply nozzle that determines connection / disconnection between the liquid supply nozzle and the liquid supply hose of the tank truck. And, wherein the liquid supply nozzle selection device, when the setting liquid type of the ground monitor the liquid type information from the detector was selected and liquid species matched, the lock of the liquid supply nozzle corresponding to the liquid species the selected releasing the device, it is obtained by the fed-liquid nozzle, characterized in that to enable the connection between the connected feeding hose liquid supply ports located on each hatch of the tank lorry vehicle. Hereinafter, description will be made based on examples of the present invention.
[0006]
FIG. 1 is a block diagram for explaining an embodiment of a mixed liquid prevention system according to the present invention, in which 1 is a service station (SS), 2 is a tank truck, 3 is a top hatch, 4 is a marker 5 is a marker case, 6 is a ground monitor, 7 is a detector, 12 is a liquid supply hose, 13 is an SS side liquid supply nozzle, 14 is a lock device, 15 is a cylinder, and 16 is an oil supply built in the ground monitor 6. This is a nozzle selection device.
[0007]
In FIG. 1, in a service station 1, various liquids loaded and transported on a tank truck 2 are underground tanks (not shown) embedded for each liquid type via a liquid supply hose 12 and a service station (SS) side oil supply nozzle 13. The liquid is stored in the tank and is supplied to the vehicle via the liquid supply stand 6a for each liquid type stored. A waterproof ground monitor 6 is attached in the service station 1. The ground monitor 6 has setting display means and communication means for setting and displaying liquid type information such as liquid type for each hatch loaded on the tank truck 2 registered in advance. Further, the ground monitor 6 includes a liquid supply nozzle selection device 16 .
[0008]
The tank of the tank truck 2 is provided with a top hatch 3 loaded for each liquid type, and a plurality of tanks provided with partition walls are provided so that the liquid type loaded from the top hatch 3 is not mixed. It has been. Each of the plurality of tanks has a liquid supply port (not shown) for transferring the oil liquid to the underground liquid storage tank via the liquid supply hose 12. In the vicinity of the liquid supply port, a marker corresponding to the liquid type transferred from the liquid supply port, for example, a marker 4 painted with a color for each liquid type is detachably mounted. The color of the marker 4 is such that, for example, regular gasoline is red, high-octane gasoline is blue, lantern is white, and light oil is yellow. In addition, information having a bit corresponding to the liquid type at a predetermined position of the marker 4, for example, bit magnets 4 a, 4 b, 4 c are embedded so that they cannot be identified from the outside by the eyes, and in the vicinity of the liquid supply port of the tank truck 2. It is detachably inserted into the marker case 5 attached to.
[0009]
If the liquid type recorded in the marker 4 has 3 bits, a normal liquid type can be sufficiently identified. For example, “100” is regular gasoline, “010” is high-octane gasoline, “001” is kerosene, “ Bit information such as “110” is light oil, “111” is heavy oil, etc., and the liquid type information is detected by the detector 7.
[0010]
FIG. 2 is an external view showing details of the detector 7. In the figure, 8 is a transmission switch, 9 is a confirmation switch, 10 is an end switch, 11 is a transmission antenna, and has an insertion port 7a for inserting the marker 4. ing. The detector 7 is driven by a built-in battery or the like, and detects the liquid type by detecting the magnetic field of the bit magnets 4a, 4b, and 4c of the inserted marker 4.
The detector 7 is also provided with transmission / reception means, for example, a transmission switch 8, a confirmation switch 9, and an end switch 10, and communicates with the ground monitor 6 via the transmission antenna 11.
[0011]
A locking device 14 is disposed at a connection portion of the SS side liquid supply nozzle 13 with the liquid supply hose 12, and the marker 4 taken out from the marker case 5 of the tank truck 2 is detected by the detector 7, and the marker When the four liquid types coincide with the liquid type set and displayed on the ground monitor 6 and stored, the SS side of the liquid type matched by the liquid supply nozzle selection device 16 built in the ground monitor 6 based on the coincidence signal The liquid supply nozzle 13 is selected.
[0012]
That is, the liquid from the tank truck 2 is transferred to the underground storage tank only when the liquid type of the marker 4, the liquid type set in the ground monitor 6, and the liquid type of the underground storage tank connected to the SS side liquid supply nozzle 13 match. The A lock device 14 is disposed between the SS side liquid supply nozzle 13 and the liquid supply hose 12, and the lock device 14 is a liquid type selected by a liquid supply nozzle selection device 16 built in the ground monitor 6. Only unlocked and connected, if not matched, it remains locked.
[0013]
For example, the locking device 14 is driven by a cylinder 15 that operates by receiving supply of driving air, and is locked or released by inserting or removing a pin 15 a that moves in the axial direction of the SS-side liquid supply nozzle 13. That is, when the pin 15a protrudes, the liquid supply hose 12 and the SS side liquid supply nozzle 13 cannot be connected, but can be connected when the pin 15a is retracted.
[0014]
FIG. 3 is a time chart for explaining the operation of the mixed liquid prevention system of the present invention.
(A) When the No. 1 hatch of the top hatch 3 of the tank truck 2 is, for example, regular gasoline, the red marker 4 is taken out from the marker case 5 of the tank truck 2 and inserted into the detector 7.
(B) The transmission switch 8 of the detector 7 is switched to the transmission side, and the liquid type information of the marker 4 is wirelessly transmitted from the transmission antenna 11 to the ground monitor 6.
(C) When the liquid types of the marker 4 and the ground monitor 6 match, the locking device 14 of the SS side liquid supply nozzle 13 of regular gasoline is released. The release operation is performed by switching air with a drive solenoid valve in the ground monitor 6.
(D) The liquid supply hose 12 and the SS side liquid supply nozzle 13 of regular gasoline are connected.
(E) The confirmation switch 9 of the detector 7 is turned on. A confirmation radio signal is transmitted.
(F) The marker 4 is extracted from the detector 7 and the next liquid type to be transferred is checked.
[0015]
(G) A No. 2 hatch marker 4, for example, a white kerosene marker 4 is put in the detector 7.
(H)-(l) The same operation as in the case of No. 1 gasoline is performed, and after the kerosene marker 4 is extracted in (l),
(M) The end switch 10 of the detector 7 is turned on. As a result, the locking device 14 is activated as in the initial state, and the SS side liquid supply nozzle 13 is locked.
[0016]
【effect】
As is apparent from the above description, this mixed liquid prevention system is based on the condition that the setting of the ground monitor 6 matches the signal from the marker 4 corresponding to the liquid type. Even if you make a mistake, the lock is not released and mixing is completely prevented.
[Brief description of the drawings]
FIG. 1 is a block diagram for explaining an embodiment of a mixed liquid prevention system according to the present invention.
FIG. 2 is an external view showing details of a detector 7;
FIG. 3 is a time chart for explaining the operation of the mixed liquid prevention system of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Service station (S * S), 2 ... Tank truck, 3 ... Top hatch, 4 ... Marker, 5 ... Marker case, 6 ... Ground monitor, 7 ... Detector, 8 ... Transmission switch, 9 ... Confirmation switch, DESCRIPTION OF SYMBOLS 10 ... End switch, 11 ... Transmission antenna, 12 ... Oil supply hose, 13 ... SS side oil supply nozzle, 14 ... Locking device, 15 ... Cylinder, 16 ... Liquid supply nozzle selection apparatus .

Claims (1)

The liquid type information for each hatch to be unloaded from a tank lorry vehicle registered in advance is set and displayed based on the reservation information reserved in advance, and the liquid type information for each hatch of the tank lorry vehicle is recorded, and the tank lorry vehicle's By inserting a marker for each hatch detachably mounted in the vicinity of each liquid supply port and the marker taken out from the tank lorry vehicle, liquid type information recorded on the marker is detected, and the liquid type A detector that transmits information to the ground monitor, and a liquid feed nozzle that selects a liquid feed nozzle that communicates with the storage tank of the liquid type when the liquid type information from the detector matches the set liquid type of the ground monitor A selection device, and a lock device disposed in each liquid supply nozzle that defines connection / disconnection between the liquid supply nozzle and the liquid supply hose of the tank truck, and the liquid supply nozzle selection device includes: When setting liquid type liquid type information from the output unit and the ground monitor was selected matching liquid type, unlock device liquid supply nozzle corresponding to the liquid species the selected, a fed-liquid nozzle, A liquid mixture prevention system characterized by enabling connection with a liquid supply hose connected to a liquid supply port in each hatch of the tank truck.

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