JPH09286498A - Distribution system and tank truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an error in kind of oil in unloading liquid oil from a tank truck through a hatch. SOLUTION: In the upper part of the tank 8 of a tank truck 5 hatch type loading ports, through each of which a loading arm 12 is inserted, are provided and near each hatch a connector 20 to which a transmitter 19 of the loading arm 12 is connected is attached. Each of the hatches is provided with the connector 20 and data on the kind of oil relating to the liquid oil loaded through the loading arm 12 is transmitted from the transmitter 19 to the connector 20, thus enabling storing of the kind of the oil actually loaded through the hatch on the spot in a load administration computer. In unloading, on the basis of the data on kind of oil taken into storage in the load administration computer, it is checked whether or not the load agrees in kind with the oil in the underground tank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a delivery system for loading an oil liquid by inserting a loading arm into each hatch of a tank truck, and unloading the oil liquid loaded in the hatch into a tank at a gas station.

[0002]

2. Description of the Related Art A tank truck is generally used as a delivery means for delivering an oil liquid from an oil depot to a gas station or the like. The tank of a tank truck is divided into a plurality of hatches. Each hatch has gasoline for the first hatch, light oil for the second hatch, and kerosene for the third hatch according to the order of the delivery destination. In particular, it is possible to load oil liquids of different oil types for each hatch.

Tank trucks (delivery vehicles) for delivering various types of oil liquids to gas stations, etc. depart from the oil tank place when the respective oil liquids are loaded at the oil tank place, and deliver to each of the delivery destinations ordered. Move to the gas station. On the other hand, a host computer for managing the shipping status of the oil liquid for each tank truck is provided at the oil tank for loading the oil liquid into the tank truck. In addition, a hatch setting device is provided at the oil depot to assign how to load the liquid type and quantity to each hatch of the tank truck based on the reservation data registered in the host computer.

When the lorry arrives at the shipping stage, the lorry's vehicle number card is inserted into a card reader to read the vehicle number code. This allows
From the host computer at the oil depot, the reservation data including the reserved quantity set for each tank hatch for the tank truck corresponding to the vehicle number code is output to the shipping control devices at a plurality of shipping stages.

Next, after connecting the grounding device to the tank truck, the driver installs the loading arm of the liquid species to be loaded in each hatch of the tank among the loading arms provided on the shipping stage for each liquid species of the oil liquid. It is inserted, and the hatch card reader provided on this loading arm is made to read the hatch card attached to the filler port of the hatch by a chain or the like. Subsequently, the driver sets the loading amount by using the loading amount setting switch of the loading arm and operates the shipping start switch, and the shipping control device causes the loading arm to determine the liquid type of the loading arm, the loading amount, and the reservation data. Oil liquid is loaded into the hatch on the condition that the reserved liquid type and the reserved quantity corresponding to the hatch match.

As a result, the pump connected to the loading arm in the shipping stage is started and the metering valve is opened, and the oil liquid is loaded in each hatch of the tank truck. Also, when the tank truck arrives at the oil tank of the delivery destination, the driver looks at the nameplate etc. installed near the oil filling port of the tank installed at the gas filling station and confirms that the oil type of the tank is, for example, gasoline. . After that, connect one end of the oil supply hose to the discharge port that communicates with the bottom opening / closing valve of the first hatch of the tank truck, and connect the other end to the oil inlet provided in the tank for gasoline. Unloading is performed by opening the bottom opening / closing valve of the hatch. Hereinafter, the same operation is performed when unloading light oil and kerosene.

In this way, when the oil liquid in the hatch of the tank truck is unloaded to the tank of the gas station, the driver himself / herself checks the type of oil loaded in the hatch, and then the unloading hose is connected. Checking the oil type of the underground tank, the oil type of the hatch and the oil type of the underground tank coincided with each other. Only when the oil types match, the unloading hose is connected, and then the valve of the oil inlet of the tank truck is operated to unload the oil liquid.

[0008]

However, conventionally, the type and quantity of oil to be loaded in each hatch of a tank truck is allocated based on the reservation data input to the host computer of the oil tank, and this hatch allocation is described. Since the loading work is performed on each hatch based on the allocation slip, a hatch setter for performing the hatch allocation process is required. In addition, in the conventional system that performs hatch allocation processing with the hatch setting device,
For example, if there is a mistake in inputting reservation data or a hatch allocation error when issuing a hatch allocation slip, for example, light oil may be loaded in the hatch for loading gasoline.

When the driver arrives at the gas station where the order has been placed, the driver confirms the type of oil loaded in the hatch on the hatch allocation slip, and checks the corresponding type of oil in the hatch oil supply port and the oil filling port of the underground tank. Connect the unloading hose to unload the oil in the hatch into the underground tank. At that time, if the oil type listed on the hatch allocation slip is different from the oil type loaded on the hatch, the oil type on the hatch allocation slip will match. You may unload it without realizing it is wrong.

Therefore, an object of the present invention is to provide a shipping device, a tank truck, an unloading device, and a delivery system that solve the above problems.

[0011]

In order to solve the above problems, the present invention has the following features. Claim 1
In the invention, the loading arm provided for each oil type is inserted into the hatch of the tank truck, and the oil liquid is loaded into each hatch. When the tank truck arrives at the delivery destination, the tank of the delivery destination holds the tank inside the hatch. In a delivery system for unloading an oil liquid, a transmitter provided on the loading arm for transmitting oil type data of the loading arm, and a hatch provided on each hatch of the tank truck, connected to the transmitter of the loading arm. A receiving unit for receiving the oil type data of the loading arm, a storage unit provided in the tank truck for storing the oil type data input from the receiving unit in association with each hatch, and the unloading hose. It is provided at the hose connection part of the tank to be connected, and is connected to the tank detection means for identifying the tank and the unloading hose. A control unit that permits unloading of the tank from the hatch when the oil type of the tank detected by the tank detection unit and the oil type data for each hatch stored in the storage unit match. It is characterized by

Therefore, according to the first aspect, the loading arm stores the oil type data of the loading arm in the storage unit of the tank truck, and the oil type of the tank detected by the tank detecting means via the unloading hose. When the oil type data for each hatch stored in the storage unit matches, unloading from the hatch to the tank is permitted, so that an accident of mixing different oil types can be prevented.

According to a second aspect of the present invention, in a tank truck vehicle in which a loading arm provided for each oil type is inserted into each hatch and an oil solution is loaded in each hatch, the tank is provided for each hatch and the loading is performed. A receiving unit that receives the oil type data transmitted from the transmitting unit of the arm, a storage unit that stores the oil type data input from the receiving unit in association with each hatch, and the unloading hose is connected. The tank detection means is provided in the hose connection part of the tank for identifying the oil type of the tank, and the oil type data of the hatch for unloading is read from the storage part and detected by the tank detection means. And a control unit that reads the oil type of the tank and permits unloading when the two oil types match.

Therefore, according to the second aspect, the tank truck has a storage unit for storing the oil type data input from the receiving unit provided for each hatch in association with each hatch. The oil type loaded in the can be stored in the storage unit, and if another oil type is loaded by mistake, that oil type will be stored, so make a mistake when unloading. Is prevented.

Further, the invention of claim 3 is characterized in that, in the delivery system, only the storage portion is enclosed in an explosion-proof container. Therefore, according to the third aspect, since only the storage unit is enclosed in the explosion-proof container, the oil species loaded in the storage unit can be safely stored even in a place where flammable oil liquid is handled.

The invention of claim 4 is characterized in that, in the tank truck, only the storage portion is enclosed in an explosion-proof container. Therefore, according to the fourth aspect, since only the storage unit is contained in the explosion-proof container, the oil type loaded in the storage unit can be safely stored even in the place where the tank truck is handling the flammable oil liquid. be able to.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a shipping device provided in an oil tank. The shipping apparatus 1 installed at the shipping site of the oil tank is controlled by the shipping control apparatus 2.
The shipping control device 2 of the shipping device 1 is provided for each shipping stage 3 and controls each device of the shipping stage 3. The shipping apparatus 1 does not have a host computer that manages reservation data when a customer such as a gas station places an order and a hatch setting device that allocates a hatch to each tank truck based on the reservation data.

Therefore, in the shipping apparatus 1 of this embodiment, an order from a customer such as a gas station is accepted by telephone or facsimile installed in the office of the oil tank station, and when the tank truck 5 arrives at the oil tank station. For example, a driver is handed a slip in which only the name of the delivery destination and the quantity of the oil type are described.

Then, the driver who receives the voucher at the office of the oil depot moves the tank truck 5 to the shipping stage 3 and inserts the car number card 7 into the card reader 6 installed near the shipping stage 3. . The vehicle number data of the tank truck 5 read by the card reader 6 is stored in the shipping control device 2.

In the tank truck 5, the tank 8 is divided into a plurality of hatches, and the capacity of each hatch is different, for example, 1 kiloliter, 2 kiloliters, and 4 kiloliters. Then, when the tank truck 5 arrives at the shipping stage 3, the driver sets the ordered oil type and quantity by manual operation and loads them into each hatch of the tank 8.

On the shipping stage 3, in addition to the shipping control device 2 and the card reader 6, a remote switch box 9, a grounding device 10, and a loading setting device 11 for setting the quantity to be loaded at each shipping point by an operator. . As shown in FIG. 2, the shipping stage 3 is provided with a plurality of loading arms 12 connected to shipping lines for each oil type.

The loading setting device 11 is provided with a loading amount setting switch 11a for setting a loading amount, a start switch 11b for starting shipping, and a stop switch 11c for stopping shipping. Further, the remote switch box 9 and the loading setting device 11 of this embodiment are integrated, and they are attached to each loading arm 12.

Storage tank (not shown) in which oil liquid is stored
A pump 14, a strainer 15, a flow meter 16, a constant flow valve 17, and a metering valve 18 are provided in the feed pipe 13 connected to the feed pipe 13 for feeding the oil liquid. Further, the tip of the feeding pipe 13 is connected to the loading arm 12. Also,
A transmitting unit 19 for transmitting the oil type data of the shipping line is attached to each of the loading arms 12.

In FIG. 1, the loading arm 1
Although only two are shown, in actuality, as shown in FIG. 2, the shipping stage 3 is provided with a plurality of loading arms 12 for each liquid type. Then, hatch loading ports 8a to 8g into which the loading arm 12 is inserted are disposed above the tank 8 of the tank truck 5.
In the vicinity of each hatch loading port 8a-8g, a connector 20 (20a-20g) as a receiving unit to which the transmitting unit 19 of the loading arm 12 is connected is attached. Therefore, the connector 20 (20a to 20g) is provided for each hatch, and the oil type data of the oil liquid loaded via the loading arm 12 is transmitted from the transmitting unit 19 to the connector 2.
Since it is transmitted to 0, the oil type actually loaded in the hatch can be registered on the spot. Further, since the connector 20 is installed near the hatch, it is composed of an intrinsically safe circuit.

The shipping control device 2 includes a loading arm 1
2 is inserted into the hatch of the tank truck 5 and the transmitter 19
When the oil type data is transmitted from the connector 20 to the connector 20, the oil type data of the hatch is recorded. Then, when the start switch 11b is turned on, the pump 14 is activated to open the metering valve 18 to start loading the tank 8. Then, the flow rate pulses from the flow rate pulse transmitter 16a of the flow meter 16 are integrated, and when the flow rate set by the loading amount setting switch 11a is shipped, the metering valve 18 is closed. After the completion of shipping, the operator pulls out the loading arm 12 from the hatch of the tank truck 5 and returns it to a predetermined position on the shipping stage 3 side.

FIG. 3 is a perspective view showing the structure of the transmitter 19. The transmission unit 19 is provided with three contacts 42a to 42c in a housing 41 having a trapezoidal end face, and a resistance value corresponding to an oil type is provided between the contacts 42a and 42b. The first resistor 43a is provided, and the second resistor 43b having a resistance value according to the type of oil shipped via the loading arm 12 is provided between the contact 42a and the contact 42c. There is.

The transmitting portion 19 has plug insertion holes 41a to 41c on the end surface of the housing 41, and the plug insertion hole 41a.
Contacts 42a to 42c are provided in the inner part of the to 41c. Therefore, the transmission unit 19 is provided with a connector 20a provided near the hatch loading ports 8a to 8g of the tank truck 5.
.. to 20g, currents from the connectors 20a to 20g flow to the contact 42a, and the voltage generated by the resistors 43a and 43b serves as information (oil type data) for identifying the oil type from the contacts 42b and 42c. It is transmitted to the 20a to 20g side.

FIG. 4 shows an example of resistance values of the resistors 43a and 43b of the transmitter 19 which are set corresponding to the oil type data.
As described above, in this embodiment, the resistance values of the resistors 43a and 43b are predetermined oil types (high-octane gasoline, regular gasoline,
Since it is set corresponding to either kerosene or light oil, the oil type of the loading arm 12 can be identified by the voltage value output from the transmission unit 19. Therefore, the number of signal lines can be smaller than that in the configuration in which a combination of 4-bit or 6-bit signals is used, and the configuration of the transmission unit 19 can be simplified and downsized.

Further, since the housing 41 is connected to the loading arm 12 by the chain 45, the transmitting unit 1
It is prevented that 9 is lost or that the transmission unit 19 is replaced. FIG. 5 shows a schematic configuration of a tank truck.

The inside of the tank 8 of the tank truck 5 has a plurality of hatches 22a-2a having hatch loading ports 8a-8g.
It is divided into 2g. Different types of oil are loaded in the plurality of hatches 22a to 22g according to the order of the delivery destination. At the bottom of each hatch 22a-22g, each hatch 22a-2
Bottom opening / closing valves 23a to 23g, which are electromagnetic valves that are opened when the oil liquid loaded in 2 g is unloaded, are provided. Of the bottom opening / closing valves 23a to 23g, the bottom opening / closing valves 23a to 23a arranged on the front side (driver's side) are numbered 1 to 3.
23c is connected in parallel to the first discharge port 25. Further, among the bottom opening / closing valves 23 a to 23 g, the fourth to seventh bottom opening / closing valves 23 d to 23 g arranged on the rear side are connected in parallel to the second discharge port 26.

Further, on the upper portions of the hatches 22a to 22g,
Vapor recovery pipelines 28 and 29 are provided for recovering the vapor generated when the cargo is unloaded into the underground tank of the gas station into the hatches 22a to 22g. One vapor recovery line 2
8 communicates with the first to third hatches 22a to 22c arranged on the front side (driver's side), and the other vapor recovery pipeline 29 includes the fourth to seventh hatches arranged on the rear side. Hatch 22d
Connected to ~ 22g. In addition, the vapor recovery pipeline 2
At the ends of 8 and 29, connection ports 30 and 31 for connecting a vapor recovery hose are provided.

At the driver's seat of the tank truck 5, a cargo management computer 33 that stores the type of oil loaded in each of the hatches 22a to 22g at the oil tank, a unloading operation panel 34 that is operated when unloading, An unloading computer 35 for performing unloading control when unloading each 22a to 22g of oil liquid
And are installed. Also, the cargo management computer 33
The "oil type-resistance value table" as shown in FIG. 4 described above is stored in the memory in advance, and the voltage value transmitted from the transmitting unit 19 is stored based on the "oil type-resistance value table". It can be identified as oil type data.

The oil seed loading site of the oil tank is designated as a dangerous area by the Fire Service Law, and only the cargo management computer 33 is stored in an explosion-proof case so that it can be used by turning it on. Since the unloading work site is an area where general equipment can be handled even under the Fire Defense Law, the unloading operation panel 34 and the unloading computer 35 are not stored in the explosion-proof case. Therefore, it has a compact structure.

Further, communication connectors 36 and 37 are provided near the discharge ports 25 and 26. The connectors 36 and 37 are connected to the unloading computer 35 provided in the driver's seat of the tank truck 5. Further, the unloading computer 35 is connected to an earth reel 40 provided at the bottom of the driver's seat.

The unloading computer 35 has a storage device 33.
Hatch 2 when the oil type of each hatch 22a to 22g stored in the memory matches the oil type of the underground tank installed at the gas station.
A control program that permits unloading of the underground tank from 2a to 22g is input.

FIG. 6 is a diagram showing a power supply system of the tank truck 5. The ignition switch 46 of the tank truck 5 has an “OFF” terminal 46a connected to the cargo management computer 33, an “ACC” terminal 46b connected to the cargo management computer 33 and the unloading computer 35,
The “ON” terminal 46c is connected to the engine control unit 47 of the tank truck 5. The movable terminal 46d of the ignition switch 46 is connected to the battery 48.

Therefore, when the movable terminal 46d of the ignition switch 46 is operated to the OFF position, power is supplied only to the cargo management computer 33, and when the movable terminal 46d is operated to the ACC position, the cargo management computer 33 is operated. Power is supplied to the computer 33 and the unloading computer 35, and when the movable terminal 46d is operated to the ON position, power is supplied to the engine control unit 47.

Since only the cargo management computer 33 is housed in the explosion-proof case (not shown), it can be operated safely even during loading of oil and liquid on the shipping stage 3. Therefore, when loading, the ignition switch 4
6 is operated to the OFF position to stop the unloading computer 35 and the engine control unit 47. As long as the ignition switch 46 is turned off, no power is supplied to the non-explosion proof unloading computer 35, so safety at the time of shipment can be achieved.

FIG. 7 is a block diagram showing the configurations of the cargo management computer 33 and the unloading computer 35. The cargo management computer 33 is housed in an explosion-proof case 53 having an explosion-proof structure. In the cargo management computer 33, the cargo management circuit 49 has the intrinsic safety barrier circuit 33.
The connectors 20a to 20g are connected in parallel via a to 33g.

In the cargo management circuit 49, resistance value-voltage conversion circuits (A / D conversion circuits) 49a to 49g connected to the intrinsically safe barrier circuits 33a to 33g and resistance values-
The voltage values corresponding to the resistance values of the transmitters 19 connected to the connectors 20a to 20g are A / D converted by the voltage conversion circuits (A / D conversion circuits) 49a to 49g, and the A / D converted voltage values. CPU that receives signals as oil type data
49 h, a communication I / F circuit 49 i for transmitting a signal output from the CPU 49 h to the unloading computer 35, and a power supply circuit 49 j to which power is supplied from the battery 48 via the ignition switch 46.

The CPU 49h loads the oil liquid into the hatches 22a to 22g of the tank truck 5 as will be described later.
The voltage value as the oil type data transmitted from the transmission unit 19 of the loading arm 12 is read and the transmission unit 19
The cargo data storage unit 49k has the oil type data transmitted from the vehicle as the loading oil type of the hatch.

The unloading computer 35 uses the unloading control circuit 5
0 is connected to the connectors 36 and 37 provided near the discharge ports 25 and 26 via the intrinsically safe barrier circuits 35a and 35b. Further, the unloading control circuit 50 corresponds to the resistance value-voltage conversion circuits (A / D conversion circuits) 50a and 50b connected to the intrinsically safe barrier circuits 35a and 35b, and the hatches 22a to 22g of the tank truck 5. Discharge port 2
CPU 50c that performs unloading control by determining 5, 26 and C
Each hatch 22 is operated by a valve opening or closing signal from the PU 50c.
an electromagnetic valve output circuit 50d ₁ ~50d ₇ for opening or closing the bottom opening and closing valve 23a~23g of A～22g, each hatch is transmitted from the load management computer 33 22A～22
a communication I / F circuit 50e for receiving oil type data for each g,
A communication I / F circuit 50f connected to the unloading operation panel 34,
The power supply circuit 50g is supplied with power from the battery 48 via the ignition switch 46.

The CPU 50c is a filling port data storage section 5 for storing the oil type of the filling port of the underground tank installed at the filling station.
0h and the oil type data for each hatch 22a to 22g transmitted from the cargo management computer 33 are temporarily stored, and the cargo-lubrication port verification means 50i for verifying the oil type of the hatch to be unloaded and the oil type of the underground tank. As described later, when unloading the oil liquid loaded in the hatches 22a to 22g of the tank truck 5 to the underground tank of the gas station, the unloading control is performed.

Here, the control process executed by the cargo management computer 33 when the oil liquid is loaded into the hatches 22a to 22g of the tank truck 5 at the oil tank will be described with reference to the flowchart of FIG. Tank truck 5
When loading the oil liquid on the vehicle, the driver stops the tank truck 5 at the stop position on the shipping stage 3 as shown in FIG. Check the species and quantity, and check each hatch 22a-22g
Allocate the oil type to.

Then, the driver uses the loading arm 1
2 is inserted into one of the hatch loading ports 8a to 8g of the hatches 22a to 22g. The transmitting unit 19 of the loading arm 12 is connected to the connector of one hatch in which the loading arm 12 is inserted among the connectors 20a to 20g provided near the hatch loading ports 8a to 8g.
Then, when a constant current is applied to the transmitter 19 via the connectors 20a to 20g, a voltage change occurs according to the resistance values of the resistors 43a and 43b built in the transmitter 19, and this voltage value is the oil type data. Is transmitted to the connectors 20a to 20g.

When the cargo management computer 33 confirms that the ignition switch 46 of the tank truck 5 is turned off and the engine is stopped in step S1 (hereinafter "step" is omitted) of FIG.
Proceed to S2, each hatch 22a-22 of the tank truck 5
A constant current is applied to each of the connectors 20a to 20g provided on g to apply a voltage.

At the next step S3, it is determined whether or not there is a voltage change at the input port 1 to which the signal received from the connector 20a of the first hatch 22a is input. When the connector 20a is connected to the transmitter 19 provided on the loading arm 12, a voltage change according to the resistance value of the transmitter 19 occurs. Therefore, in S3, when there is a voltage change in the input port 1 corresponding to the hatch 20a, the process proceeds to S4, in which the oil type signal transmitted from the transmitter 19 is input to the input port 1
Read from the voltage change of.

Then, in S5, the voltage value corresponding to the resistance value of the transmitter 19 supplied to the input port 1 is A / D converted and used as the oil type data of the load management computer 33 as the oil type for loading the hatch 20a. Cargo data storage unit 49
Store in k. Then, the process proceeds to S6, where the connector 20a
Is stopped, and the process returns to S3.

If there is no voltage change at the input port 1 at S3, the process proceeds to S7 to determine whether or not there is a voltage change at the input port 2 to which the signal received from the connector 20b of the second hatch 22b is input. To judge. If there is a voltage change at the input port 2 in S7, the above S4
~ The same processing as S6 is executed.

If there is no voltage change at the input port 2 at S7, the connector 20 of the third hatch 22c is connected.
It is determined whether or not there is a voltage change at the input port 3 to which the signal received from c is input. In this way each hatch 2
The voltage change of each connector 20a-20g provided in 2a-22g is monitored, and when there is no voltage change in the input port 8 in S8, it progresses to S9 and the ignition switch 46 of the tank truck 5 is switched on. It is determined whether or not all the oil liquid has been loaded.

Then, there is no voltage change in all the connectors 20a to 20g, and the ignition switch 4 is pressed in S9.
When 6 is off, the process returns to S1 and the processes after S1 are repeated. However, in S9, the ignition switch 46
Is turned on, the tank lorry vehicle 5 is started because the loading has been completed, so that the loading control processing by the cargo management computer 33 is ended.

After this, the tank truck 5 loaded with the oil liquid at the oil tank heads for the delivery destination gas tank. FIG. 10 is a diagram showing an example of the cargo data stored in the memory of the cargo management computer 33. As described above, the oil type data transmitted from the transmission unit 19 of the loading arm 12 inserted into the hatches 22a to 22g is provided with connectors 20a to 20g provided near the hatch loading ports 8a to 8g.
When it is received via the hatches, the cargo management computer 33 makes the hatches 22 correspond to the hatch numbers as shown in FIG.
The oil type data for every a to 22 g is stored in the memory.

Therefore, the unloading computer 35 reads the oil type data for each of the hatches 22a to 22g from the cargo management computer 33 at the time of unloading, as will be described later, so that the oil type actually loaded in each of the hatches 22a to 22g. Even if the driver intends to load gasoline into the first hatch 22a and accidentally loads light oil, the memory device 33 actually reads "first hatch = light oil". Since the loaded oil type is stored, there is no mistake in selecting the oil type when unloading.

As described above, in the present embodiment, since the hatch management system used conventionally is not used, it is possible to prevent an accident of mixing different oil types due to an input error of reservation data registered in the host computer or an error in hatch allocation. . Next, the case of unloading at the delivery gas station will be described.

FIG. 11 is a schematic configuration diagram of an unloading device for a tank truck according to the present invention. Underground tanks 51 and 52 of different oil types are buried under the gas station. For example, the underground tank 51 is a tank for gasoline, and the underground tank 52 is a tank for light oil. In the present embodiment, the case of unloading the oil liquid into the underground tanks 51 and 52 will be described as an example, but it goes without saying that the present invention can also be applied to the case of unloading into the ground-based tank instead of the underground tanks 51 and 52. Yes.

Oil tanks 54, 55 to which oil is supplied from the tank truck 5 to the underground tanks 51, 52, and an oil vapor discharge conduit 56 for discharging the oil vapor generated in the underground tanks 51, 52 to the outside. , 57 and are provided. The oil vapor discharge pipes 56 and 57 reduce the negative pressure in the underground tanks 51 and 52 by introducing the outside air into the tank as the liquid level descends when refueling the fuel tank of the vehicle.

Further, the tip ends of the oil vapor discharge pipelines 56, 57 stand up at the corner of the gas station and extend to a predetermined height.
6a and 57a are provided, and the oil vapor discharge pipeline 56,
Connection parts 58 and 59 are branched in the middle of 57. Further, the unloading hose 6 is attached to the oil filling ports 60 and 61 of the respective underground tanks 51 and 52 provided at the upper ends of the oil feeding pipelines 54 and 55.
Transmission units 64 and 65 are provided for transmitting the underground tank code number and oil type data set for each underground tank 51 and 52 after connecting 2, 63. The unloading hoses 62 and 63 are provided with signal lines 62a and 63a for transmitting signals from the transmission units 64 and 65 to the tank truck vehicle side.

The oil filling port 6 of each underground tank 51, 52
Since the transmitters 64 and 65 provided in the transmitters 0 and 61 have the same configuration as the transmitter 19 as described above, the description of the internal configuration is omitted. FIG. 12 is a diagram showing a configuration of the unloading hoses 62 and 63.

In the unloading hoses 62 and 63, a tubular connecting fitting 72 is press-fitted into one end of an oil resistant hose 71, and at the end of the connecting fitting 72, the discharge port 25 of the tank truck 5 is provided.
A nut 73 screwed onto the screw 26 is provided. Also,
The connection fitting 72 includes a connector 3 on the tank truck 5 side.
A connector 77 to which 6 and 36 are connected is attached.

At the other end of the hose 71, a tubular connecting fitting 7
8 is press-fitted, and at the end of the connection fitting 78, a screw portion 7 screwed into the oil filling ports 60 and 61 of the underground tanks 51 and 52.
9 are provided. Further, the connection fitting 78 is provided with a connector 80 to which the transmitters 64 and 65 provided near the oil filling ports 60 and 61 are connected. A signal line (not shown) for connecting the connectors 77 and 80 at both ends is provided on the outer circumference or the thick portion of the hose 71.

FIG. 13 is a view showing a state in which the unloading hose 62 is connected. When unloading the oil liquid loaded on the tank truck 5, the threaded portion 79 of the unloading hose 62 is screwed into the oil filling port 60 of the underground tank 51, and the nut 7
3 is screwed into the discharge port 25.

After connecting the unloading hose 62 to the oil filling port 60 as described above, the connector 75 on the tank truck vehicle side is connected.
Is connected to the connector 77 of the unloading hose 62, and the transmitter 64 on the underground tank side is connected to the connector 8 of the unloading hose 62.
When it is connected to 0, the voltage according to the resistance value in the transmitter 64 is used as an oil type signal (oil type data) and a tank signal (tank code number) for identifying an underground tank.
5 is sent.

The unloading hose 63 is connected in the same manner as the unloading hose 62. As shown in FIG. 13, the unloading hoses 62 and 63 have the discharge ports 25 and 26 and the oil filling port 6 respectively.
0 and 61 are connected so as to communicate with each other, the vapor recovery hoses 81 and 82 are connected to the connecting portion 5 of the oil vapor discharge pipelines 56 and 57.
8, 59 and the connecting portions 30, 31 of the tank truck 5 are connected so as to communicate with each other.

Now, the unloading process executed by the unloading computer 35 will be described with reference to the flowchart of FIG. When the tank truck 5 arrives at the delivery service station, the driver switches the ignition switch 46 of the tank truck 5 to the ACC position to stop the engine. Then, the driver confirms the delivery destination and the amount of oil type described on the slip at the oil tank station, and confirms the oil type of the underground tanks 51 and 52 installed at the gas station, and then proceeds to unloading work.

The unloading computer 35 uses the S11 of FIG.
At, it is determined whether the ignition switch 46 is switched to the ACC position. Then, when the ignition switch 46 is switched to ACC, the process proceeds to S12, and it is determined whether or not the ground is connected.

In S12, when the ground wire pulled out from the ground reel 40 of the tank truck 5 is grounded, the process proceeds to S13, in which the oil types loaded in the hatches 22a to 22g stored in the memory of the cargo management computer 33 are loaded. Read the data. Succeedingly, in S14, it is determined whether or not the unloading hoses 62 and 63 are connected. Then, the unloading hoses 62 and 63 are connected to the discharge ports 25 and 26 and the lubricating ports 60 and 6, respectively.
1 is connected so as to communicate with each other, the connector 75 on the tank truck vehicle side is connected to the connector 77 of the unloading hoses 62, 63, and the transmitters 64, 65 on the underground tank side are connected to the connector 80 of the unloading hoses 62, 63. When connected to the unloading computer 35, the voltage according to the resistance value in the transmitters 64 and 65 is used as an oil type signal (oil type data) and a tank signal (tank code number) for identifying the underground tanks 51 and 52. Sent.

Therefore, in S14, the underground tank 5
Transmitters 64 provided at 1, 52 oil fill ports 60, 61,
When the data (oil type data, tank code number) transmitted from 65 is received, it is determined that the connection of the unloading hoses 62, 63 is completed, and the process proceeds to S15, where the transmission units 64, 6
The data (oil type data, tank code number) transmitted from 5 is read.

In the next step S16, the oil type data of the underground tanks 51, 52 to which the unloading hoses 62, 63 are connected and the oil type data of the hatches 22a-22g are compared to determine whether or not the oil types match. To judge. In this S16, when the oil type data of the underground tanks 51 and 52 and the oil type data of the hatches 22a to 22g match, it is confirmed that a different oil type mixing accident does not occur, so the process proceeds to S17 and the hatch 22
Among the bottom opening / closing valves 23a to 23g of a to 22g, the bottom opening / closing valve to which the unloading hoses 62 and 63 are connected is opened.

Then, in S18, an indicator lamp (not shown) of the hatch for unloading is turned on to inform that the unloading is in progress. The driver confirms the lighting of the display lamp and opens the manual discharge valve (not shown) provided at the discharge ports 25 and 26. As a result, the oil liquid of the hatch passes through the unloading hoses 62, 63 and the underground tank 5
Unload to 1,52.

In the next step S19, it is determined whether or not an unloading end switch (not shown) has been operated to ON. If there is still oil liquid to be unloaded, the unloading end switch is turned off. Since there is still, the process returns to S14 and the processes of S14 to S19 are repeated. In addition, the above S1
If the oil types do not match in No. 6, the process proceeds to S20 and an alarm or the like is used to notify that the connection of the unloading hoses 62, 63 is abnormal.

Then, returning to S14, the unloading hose 62,
The connection work of 63 is redone. When the unloading end switch is turned on in S19, it is judged that all the unloading work to the gas station has been completed, the process proceeds to S21, and the ground wire is rewound on the earth reel 40. Then, in S22, it is confirmed that the ignition switch 46 of the tank truck 5 is turned on and the engine is started.

Then, when the ignition switch 46 is turned on in S22, the process proceeds to S23, in which the oil type data of the hatch unloaded this time at this gas station is cleared from the cargo data storage unit 49k and a series of loading is performed. The process ends. In this way, since the oil type at the time of unloading is confirmed based on the oil type of the loading arm 12 stored when loading the oil liquid, it is possible to prevent another oil type from being unloaded to the underground tanks 51 and 52. it can. Therefore, even if the oil type is wrong at the time of loading, the oil type data of the oil liquid actually loaded in the hatches 22a to 22g is used as the underground tanks 51, 52.
Since it is compared with other oil types, accidents of mixing different oil types can be prevented when unloading.

Since the unloading computer 35 stores data relating to the current delivery (oil type data for each hatch, oil type data for each oil filling port), these data can be output. Easy delivery management. FIG.
5 shows a modification of the tank truck.

This tank truck 91 is provided with each hatch 22.
Dedicated discharge ports 92a to 92g are provided at the bottom of a to 22g. The discharge ports 92a to 92g are provided with connectors 93a to 93g for receiving the data transmitted from the transmission units 64 and 65 of the underground tanks 51 and 52, respectively.

In this case, the driver confirms the delivery destination and the quantity of the oil type described on the slip at the oil depot, and also confirms the oil type of the underground tanks 51 and 52 installed at the gas filling station to check each hatch 22a. The discharge ports 92a to 92g for every 22 g are selected and the unloading hoses 62 and 63 are connected. The unloading hose 62,
As described above, the connection work of 63 is performed by the unloading hoses 62, 6
3 is connected so that the discharge ports 92a to 92g and the oil filling ports 60 and 61 may communicate with each other, and the connector 7 on the tank truck vehicle side.
5 is connected to the connector 77 of the unloading hoses 62 and 63, and the transmitters 64 and 65 on the underground tank side are unloading hoses 6
When connected to the connector 80 of 2, 63, the transmitter 64,
A voltage corresponding to the resistance value in 65 is transmitted to the unloading computer 35 as an oil type signal (oil type data) and a tank signal (tank code number) for identifying the underground tanks 51 and 52.

In this case, in S16, if the oil types of the hatch and the underground tank are the same, the bottom opening / closing valves 23a-23g of the hatch are opened and at the same time unloading is started. When the oil types of the hatch and the underground tank do not match, the bottom opening / closing valves 23a to 23g are not opened, and the unloading hoses 62 and 63 are reconnected.

Therefore, the tank truck 9 having the exclusive discharge ports 92a to 92g at the bottom of each hatch 22a to 22g.
Also in the case of No. 1, as in the case of the above-described embodiment, the oil type at the time of unloading is confirmed based on the oil type of the loading arm 12 stored when the oil liquid is loaded.
It is possible to prevent another oil type from being unloaded to 1, 52.
Therefore, even if the wrong oil type is used during loading, the hatch 2
Since the oil type data of the oil liquid loaded in 2a to 22g is compared with the oil types of the underground tanks 51 and 52, accidents of mixing different oil types can be prevented when unloading.

In the above embodiment, the case where the oil liquid is unloaded to the underground tank of the gas station has been described as an example, but the present invention is not limited to this, and the oil liquid is unloaded to the underground tanks provided in other places. Of course, it can be applied to the case. Further, the transmitting unit is not limited to the embodiment described above, and for example, a wireless transmitting unit may be used instead of the wired type to transmit the identification data such as the underground tank number and the oil type. .

[0079]

As described above, according to claim 1, according to claim 1, the loading arm stores the oil type data of the loading arm in the storage unit of the tank truck, and the tank is loaded via the unloading hose. When the oil type of the tank detected by the detection means and the oil type data for each hatch stored in the storage unit match, the loading of the oil type actually loaded from the hatch to the tank is allowed in order to permit the unloading of the tank. It can be stored in the storage unit, and if another oil type is accidentally loaded, that oil type will be stored,
It is possible to prevent wrong oil type when unloading. Also,
Since it does not rely on the hatch management system that has been used conventionally, it is possible to prevent accidents of mixing different oil types due to mistakes in input of reservation data registered in the host computer or mistakes in hatch allocation.

In addition, according to the second aspect, since the tank lorry vehicle is provided with a storage unit for storing the oil type data input from the reception unit provided for each hatch in association with each hatch, The oil type loaded in the can be stored in the storage unit, and if another oil type is loaded by mistake, that oil type will be stored, so make a mistake when unloading. Is prevented.

Further, according to the third aspect, since only the storage unit is enclosed in the explosion-proof container, it is possible to safely store the oil species loaded in the storage unit even in a place where flammable oil liquid is handled. . Further, according to claim 4, since only the storage unit is enclosed in the explosion-proof container, the oil type loaded in the storage unit can be safely stored even in the place where the tank truck is handling the flammable oil liquid. be able to.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram for explaining an embodiment of an unloading device for a tank truck according to the present invention.

FIG. 2 is a perspective view showing a state in which a loading arm is inserted in a hatch of a tank truck.

FIG. 3 is a perspective view showing a configuration of a transmission unit.

FIG. 4 is a diagram showing an example of an oil type-resistance value table stored in a cargo management computer.

FIG. 5 is a diagram showing a configuration of a tank truck.

FIG. 6 is a circuit diagram showing a power supply system of a tank truck.

FIG. 7 is a block diagram showing configurations of a cargo management computer 33 and an unloading computer 35.

FIG. 8 is a flowchart of a loading process executed by a cargo management computer.

FIG. 9 is a view showing a state in which the loading arm is inserted into the hatch of the tank truck.

FIG. 10 is a diagram showing an example of cargo data stored by a cargo management computer in a loading process.

FIG. 11 is a diagram for explaining a state of unloading from a hatch of a tank truck that has arrived at a gas station.

FIG. 12 is a diagram showing a configuration of an unloading hose.

FIG. 13 is a diagram showing a state in which a discharge port of a tank truck and an oil supply port of an underground tank are unloaded and connected by a hose.

FIG. 14 is a flowchart of an unloading process executed by an unloading computer.

FIG. 15 is a configuration diagram showing a modified example of the tank truck.

[Explanation of symbols]

 1 Shipping Device 2 Shipping Control Device 3 Shipping Stage 5 Tank Lorry Vehicle 8 Tank 11 Loading Setting Device 12 Loading Arm 19 Transmitter 20 (20a to 20g) Connector 23a to 23g Bottom Opening Valve 25, 26 Discharge Port 28, 29 Vapor Recovery Pipeline 33 cargo management computer 34 unloading operation panel 35 unloading computer 36, 37 connector 40 ground reel 46 ignition switch 51, 52 underground tank 54, 55 oiling pipe line 56, 57 oil vapor discharge pipe line 60, 61 oiling port 62, 63 Unloading hose 64,65 Transmission unit 91 Tank truck 92a to 92g Discharge port 93a to 93g Connector

Claims (4)

[Claims] 1. A loading arm provided for each oil type is inserted into a hatch of a tank truck to load oil liquid into each hatch, and when the tank truck arrives at a delivery destination,
In the delivery system for unloading the oil liquid in the hatch to the delivery destination tank, the loading arm is provided, and a transmission unit that transmits the oil type data of the loading arm, and is provided in each hatch of the tank truck. A receiver connected to the transmitter of the loading arm to receive the oil type data of the loading arm; and a tank provided on the tank truck, which stores the oil type data input from the receiver in association with each hatch. A storage unit and a tank detection unit provided in the hose connection unit of the tank to which the unloading hose is connected, for identifying the tank, and a tank detected by the tank detection unit via the unloading hose. Unloading from the hatch to the tank when the oil type and the oil type data for each hatch stored in the storage unit match. Delivery system characterized in that it comprises a control means for permitting. 2. A tank lorry vehicle in which a loading arm provided for each oil type is inserted into each hatch and oil liquid is loaded in each hatch, is provided for each hatch, and is transmitted from a transmission unit of the loading arm. And a storage unit for storing the oil type data input from the receiving unit in association with each hatch, and a hose connection unit of the tank to which the unloading hose is connected. A tank detection unit for identifying the oil type of the tank, and the oil type data of the hatch for unloading from the storage unit, and the oil type of the tank detected by the tank detection unit. A tank lorry vehicle comprising: a control unit that permits unloading when both types of oil match. 3. The delivery system according to claim 1, wherein only the storage unit is enclosed in an explosion-proof container. 4. The tank truck according to claim 2, wherein only the storage unit is enclosed in an explosion-proof container.