JP4526733B2 - Shipping system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shipping system, and more particularly, to a shipping system configured to load oil into a hatch of a tank truck.
[0002]
[Prior art]
The oil liquid refined at the refinery is loaded into, for example, a tanker and transported to a storage tank at the oil tank. When oil is loaded into a tanker at a refinery, the temperature of the oil flowing through the pipeline is measured, and the integrated value of the value obtained by correcting the volume flow measured by the flow meter is used as the reference temperature (15 ° C). When loading from a tanker to a storage tank at an oil tank station, the integrated flow rate corrected for temperature is used as the unloading volume corresponding to the reference temperature (15 ° C) when the tanker is unloaded from the tanker. Registered in the computer of the management center that collects and manages the oil at a certain location.
[0003]
As a delivery means for delivering an oil liquid from an oil tank station to a gas station or the like, a tank truck is generally used. The tank of a tank truck is divided into a plurality of hatches, and each hatch is loaded with an oil type according to the order of the delivery destination from its capacity. For example, the first hatch is filled with gasoline, the second hatch is light oil, the third hatch is kerosene, etc., and different types of oil are loaded for each hatch.
[0004]
Note that when oil is loaded into the hatch of a tank truck, temperature correction is not performed, and the integrated value of the flow rate measured by the flow meter is recorded as the loading amount.
[Problems to be solved by the invention]
As mentioned above, while the unloading amount of the oil liquid unloaded from the tanker to the storage tank at the oil tank station has been corrected for temperature, it is measured by a flow meter when loading into the hatch of a tank truck. The accumulated flow value without temperature correction is recorded as the loading amount. Therefore, in the database registered in the host computer at the oil tank station, the remaining amount of tank and tank tank for the temperature-corrected unloading amount from the tanker. An error occurs that the total value of the amount of loading to the vehicle that has not been temperature-corrected decreases or increases, and the oil liquid cannot be managed accurately.
[0005]
In addition, in an existing oil tank, when trying to solve the above problems, two arithmetic circuits, that is, a volume flow calculation circuit that is not temperature-corrected and a temperature flow calculation circuit that is temperature-corrected, are provided for each shipping stage. It is necessary to provide each shipping point. In this case, the configuration becomes complicated, and two control systems must be provided.
[0006]
In addition, because loading operations to tank trucks are performed simultaneously at multiple shipping stages, performing calculations for temperature correction from the start of loading to the completion of loading increases the burden on the computer at the oil tank and increases the processing capacity of the computer. May decrease.
Therefore, an object of the present invention is to provide a shipping system that solves the above problems.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following features.
The present invention includes a shipping management computer for managing the oil liquid loaded into the tank truck,
A hatch setter for setting the type of oil to be loaded into each hatch of the tank truck, and the loading amount;
A supply path for loading the hydraulic fluid stored in the tank oil bases hatch of the tank lorry vehicle,
A volumetric flow meter and an on- off valve provided in the supply path ;
When the integrated value of the volume flow rate measured by the volume flow meter reaches the predetermined loading amount set by the hatch setting device, the predetermined loading amount to the hatch of the tank truck is closed by closing the on-off valve. A plurality of shipping control devices for loading ,
In the shipping system with
Providing temperature measuring means for measuring the temperature of the oil liquid loaded in the hatch of the tank truck every predetermined time;
The shipping control device is configured to transmit the loading amount of the oil liquid loaded in the hatch whenever the loading of the oil liquid into each hatch of the tank truck is completed,
The shipping management computer
A calculation means for calculating a volume conversion coefficient for each predetermined time based on the temperature measurement value measured by the temperature measurement means;
Storage means for storing the volume conversion coefficient calculated by the calculation means together with the temperature measurement time by the temperature measurement means;
Each time the amount of oil liquid loaded in the hatch of the tank lorry vehicle is received from the shipping control device, it is loaded into the tank of the tank lorry vehicle using the volume conversion factor stored by the storage means at the time of loading. Temperature correction means for converting the loading amount into a volumetric flow rate corresponding to a predetermined reference temperature;
It is characterized by comprising.
[0009]
The host computer 3 in the oil tank station is connected to a computer 15 installed in the reservation center via a public line 13 so as to be communicable. When there is an order (oil type and quantity) from a customer such as a gas station, the computer 15 stores these orders (oil type and quantity) as reservation information and manages the shipping reservation status of the oil tank, In accordance with an order from the customer, a delivery plan for which oil tanks to deliver these oil solutions is created. Therefore, the data of the delivery destination of each tank truck 5 and the ordered oil type and quantity is transferred from the computer 15 to the host computer 3 of the oil tank station.
[0010]
Further, the storage tank 41 in the oil tank station is installed in the vicinity of the quay 42, and the oil liquid transported by the tanker 43 in contact with the quay 42 is supplied via the pipeline 44. Further, the shipping line 45 connected to the storage tank 41 is communicated with the loading arm 25 of the shipping device 1, and sends oil to the hatch of the tank truck 5 as will be described later.
[0011]
The shipping line 45 is provided with a temperature detector (temperature measuring means) 46 for measuring the temperature of the oil liquid. The temperature detector 46 uses, for example, a temperature sensor (temperature measuring resistor) that utilizes the temperature dependence of the electrical resistance of metal, and detects a detection signal corresponding to the temperature of the oil flowing through the shipping line 45. The data is output to the interface (I / F board) 47 of the host computer 3.
[0012]
The host computer 3 manages various data relating to the supply and loading of the oil liquid at the oil tank station. After loading into the tank truck 5 as described later, the loading amount is determined according to the temperature of the loaded oil liquid. A temperature correction process for converting to an amount corresponding to the reference temperature (15 ° C.) is executed.
[0013]
FIG. 2 is a configuration diagram showing a schematic configuration of the shipping system.
As shown in FIG. 2, the host computer 3 stores orders (oil type and quantity) from the customer in the storage device 3 a and stores reservation data in the shipping control device 4 and the hatch setting device 2 of the shipping device 1. Forward. The hatch setting device 2 includes a card reader / writer 8, a display body 9, a keyboard 10, a printer 11, a CPU 12, and the like.
[0014]
The shipping control device 4 of the shipping device 1 is provided for each shipping stage 7 and controls each device of the shipping stage 7, and a car number card 27 distributed to each tank truck 5 is received by the card reader 14. When read, the reservation data of the corresponding vehicle number is transferred from the host computer 3, and shipping control is performed so that the oil type and quantity included in the reservation data are loaded into the tank truck 5.
[0015]
The tank truck 5 has a tank 6 divided into a plurality of hatches, and the capacities of the hatches are different, for example, 1 kiloliter, 2 kiloliters, and 4 kiloliters. When the tank truck 5 arrives at the shipping stage 7, the oil type set by the hatch setting device 2 is loaded on each hatch of the tank 6.
[0016]
Further, the memory of the hatch setting device 2 stores a control program for allocating the oil type / quantity loaded in each hatch.
The shipping device 1 provided at the shipping site includes a shipping control device 4, a card reader 14, a remote switch box 16 having a hatch card reader, a grounding device 17, and a loading setting in which an operator sets the quantity to be loaded for each shipping point. The container 18 and the like.
[0017]
The loading setting device 18 is provided with a loading amount setting switch 18a for setting the loading amount, a start switch 18b for starting shipment, and a stop switch 18c for stopping shipment. Furthermore, the remote switch box 16 and the loading setting device 18 of this embodiment are integrated, and these are attached to the loading arm 25.
[0018]
A shipping line 45 connected to the storage tank 41 in which the oil liquid is stored is in communication with the feed pipe 19 of the shipping stage 7. The feed pipe 19 is provided with a pump 20, a strainer 21, a flow meter 22, a constant flow valve 23, and a metering valve 24.
[0019]
Further, a loading arm 25 is communicated with the leading end of the feed pipe 19. In the shipping stage 7, only one loading arm 25 is shown, but in reality, a plurality of loading arms 25 are provided for each oil type.
[0020]
FIG. 3 is a perspective view showing a state where the oil liquid is loaded at the shipping stage 7.
As shown in FIG. 3, the shipping stage 7 is provided with two loading arms 25 for loading oil into the tank truck 5.
[0021]
Here, a procedure for loading the tank truck 5 into the hatch will be described.
When the tank lorry vehicle 5 arrives at the oil tank station, the driver inserts the vehicle number card 27 issued for each tank lorry vehicle 5 into the card reader / writer 8 of the hatch setting device 2, and the vehicle stored in the vehicle number card 27. Have the code read.
[0022]
Then, when the hatch setting device 2 reads the vehicle number code from the vehicle number card 27, it requests customer data (delivery destination, oil type, quantity) of the corresponding vehicle number from the host computer 3 and sends it through the host computer 3. Customer data (delivery destination, oil type, quantity) corresponding to the vehicle number should be acquired, and loaded into each hatch of the tank truck 5 based on the delivery destination, oil type, quantity information that this reservation data has The oil type and quantity are assigned, and the printer 11 issues a slip on which hatch information is printed for the assigned oil type and quantity for each hatch.
[0023]
The driver who has received the slip moves the tank truck 5 to the shipping stage 7 and loads the oil. When the driver arrives at the shipping stage 7, the driver inserts the loading arm 25 into the hatch filler 6a. Thereafter, the quantity to be loaded is set by the loading setting device 18 and the start switch 18b is turned on.
[0024]
As described above, when the start switch 18b of the loading setting device 18 is turned on, the shipping control device 4 starts the pump 20 and opens the metering valve 24 to start loading. Then, the flow rate pulses from the flow rate pulse transmitter 22a of the flow meter 22 are integrated, and the metering valve 24 is closed when the flow rate set by the loading amount setting switch 18a is shipped.
[0025]
FIG. 4 is a block diagram showing connections between devices in the shipping system.
As shown in FIG. 4, the host computer 3 can read the customer data 37 including the name, oil type, and quantity of the customer who has received an order from the customer in the data storage unit of the storage device 3a from the computer 15 of the reservation center. Are connected to be able to communicate with each other, are connected to be able to communicate with a plurality of hatch setting devices 2 via a serial line 33, and are connected to be able to communicate with a plurality of shipping control devices 4 via a serial line 34. .
[0026]
FIG. 5 is a diagram for explaining a data processing procedure of data communication between devices in the shipping system.
As shown in FIG. 5, the reservation center computer 15 is connected to the host computer together with the car number of the tank lorry vehicle 5 that selects the customer data 37 including the ordered oil type and quantity based on the order from the gas station. 3 to send. The host computer 3 stores the received oil type, quantity and vehicle number for each customer in the customer data file 3b of the storage device 3a. That is, the host computer 3 creates customer data (delivery destination, oil type, quantity) 35a corresponding to the vehicle number data of the tank truck 5 and stores it in the storage device 3a.
[0027]
When the tank truck 5 arrives at the oil tank station, the operator inserts the car number card 27 into the card reader 8 of the hatch setting device 2. Accordingly, the hatch setting device 2 transmits a customer data transmission request notification 35a corresponding to the vehicle number card 27 to the host computer 3, and the host computer 3 transmits the customer data 35b stored in the storage device 3a to the hatch setting device. 2 to send.
[0028]
Next, the hatch setting device 2 that has received the customer data 35b displays this on the display device, and the operator sets the type and quantity of oil to be loaded in each hatch of the tank truck 5 based on this display content. As a result, the hatch assignment data 35 c is created by the hatch setting device 2, and the hatch assignment data 35 c is transmitted to the host computer 3. The host computer 3 that has received the hatch assignment data 35 c transmitted from the hatch setting device 2 stores the hatch loading data 38 in association with the vehicle number data of the vehicle number card 27.
[0029]
Next, when the worker inserts the car number card 27 into the card reader 14 provided on the shipping stage 7, the shipping control device 4 stores the hatch assignment data 35 c corresponding to the car number data stored in the car number card 27. A transmission request notification 36 is transmitted to the host computer 3, and hatch assignment data 38 is transmitted from the host computer 3 to the shipment control device 4.
[0030]
Further, when the loading operation to the tank truck 5 based on the hatch loading data 38 is completed, the shipping control device 4 transmits loading completion data 39 before the temperature correction processing to the host computer 3, and the host computer 3 performs temperature correction described later. Processing is performed and temperature-corrected loading completion data 40 is transmitted to the reservation center computer 15. Thus, the host computer 3 and the reservation center computer 15 confirm that the oil liquid assigned to the tank truck 5 has been loaded, and store the loading completion data 39 and 40 in the customer database and hatch allocation database. .
[0031]
Further, when the host computer 3 receives the loading completion data 39 transmitted from the shipping control device 4, it executes a temperature correction calculation process (see the flowchart of FIG. 9) described later.
[0032]
Next, control processing executed by the shipment control device 4 will be described.
FIG. 6 is a flowchart for explaining a control process executed by the shipment control device 4.
In FIG. 6, the shipment control device 4 determines whether or not the vehicle number card 27 is inserted into the card reader 14 provided in the shipment stage 7 in step S <b> 11 (hereinafter, “step” is omitted). When the card reader 14 reads the data recorded on the car number card 27 in S11, the process proceeds to S12, where a transmission request notification 35a is transmitted to the host computer 3, and hatch allocation data 35c corresponding to the vehicle number of the car number card 27 is transmitted. Request. When the hatch setting device 2 is configured to automatically transmit the hatch assignment data when the hatch setting process is completed, the request process of S12 is not performed.
[0033]
In the next S13, it is confirmed that the hatch assignment data 35c created by the hatch setting device 2 has been received. When the hatch assignment data 35c is received, the process proceeds to S14, and the received hatch assignment data 35c is stored. Store in memory.
[0034]
In the next S15, when the start switch 18b of the loading setting device 18 is turned on, the process proceeds to S16 and loading control is performed. That is, the shipment control device 4 starts the pump 20 and opens the metering valve 24 to start loading. And the flow rate pulse from the flow rate pulse transmitter 22a of the flow meter 22 is integrated. In the next S17, when the loading amount set by the loading amount setting switch 18a is loaded into the hatch of the tank truck 5, the metering valve 24 is closed to complete loading.
[0035]
In the next S18, the current loading amount is transferred to the host computer 3. Then, it progresses to S19 and confirms that loading of all the reservation amounts was completed. In S19, when the loading of the entire reservation amount is not completed, the process returns to S15 and the loading process after S15 is executed again.
[0036]
Here, processing executed by the host computer 3 will be described.
[0037]
FIG. 7 is a flowchart for explaining the temperature sampling process.
As shown in FIG. 7, the temperature sampling process is executed every predetermined time when the oil liquid is loaded, and the host computer 3 proceeds to S22 when a predetermined time elapses in S21. The temperature of the oil liquid detected by the detector 46 is read, and stored in the temperature sampling database 51 (see FIG. 8) as the temperature data of the oil liquid every predetermined time.
[0038]
In the next S23, a volume conversion coefficient is calculated from the temperature of the oil liquid detected by the temperature detector 46.
[0039]
Subsequently, the process proceeds to S24, and the sampled time and the detected temperature and volume conversion coefficient are stored in the temperature sampling database 51 (see FIG. 8).
[0040]
FIG. 9 is a flowchart for explaining temperature correction calculation processing executed by the host computer 3.
As shown in FIG. 9, when the host computer 3 confirms that there is a request for hatch assignment data from the shipment control device 4 in S31, the host computer 3 proceeds to S32, and from the reservation database in which the reservation data is stored, The hatch assignment data corresponding to the vehicle No. 5 is sent to the shipment control device 4. In the next S33, it is checked whether or not the loading amount to the hatch has been received.
[0041]
When the loading amount to the hatch is received in S33, the process proceeds to S34, and the temperature of the oil and the volume conversion coefficient are read from the temperature sampling database 51. Then, it progresses to S35 and performs temperature correction calculation using the following arithmetic expressions (1)-(3).
[0042]
Next, in S36, the loading amount corresponding to the reference temperature is stored in the loading database. In next S37, it is confirmed whether or not the loading of the tank lorry vehicle 5 to another hatch is completed.
[0043]
In S37, when the loading of the tank lorry vehicle 5 to another hatch is not completed, the process returns to S33, and the processes after S33 are repeated. Then, when the loading of the tank lorry vehicle 5 to another hatch is completed, the current series of processes is terminated.
[0044]
Here, the calculation formula of the temperature correction calculation performed in S35 will be described.
The calculation formula of the volume conversion coefficient (VCF) of the reference temperature (15 ° C) is defined by JIS standard (basic formula of density conversion and capacity conversion with respect to temperature: JIS 2249-1987 calculation formula) and is defined as follows: Has been.
VCF = (V ₁₅ / Vt) (ρt / ρ ₁₅ )
_{= Exp [-α T Δt (1.0} + 0.8α T Δt)] ... (1)
α _T = K ₀ -Kρ ₁₅ / (ρ ₁₅ ) ²
= {K ₀ / (ρ ₁₅ ) ² } + {K ₁ / ρ ₁₅ } (2)
α _T = A + B / (ρ ₁₅ ) ² (3)
However, Formula (3) is applied only to the fuel oil having a density (15 ° C.) of 0.7705 to 0.7875 g / cm ² .
[0045]
Further, the arithmetic formula _{(1) ~ (3),} V 15 capacity at 15 ° C is ^(m 3), volume ^(m 3) in Vt is arbitrary temperature (t ° C), ρt is the density (t ° C ) (Kg / m ³ ), ρ ₁₅ is the density (15 ° C.) (kg / m ³ ), α _T is the thermal expansion coefficient (° C ⁻¹ ) at 15 ° C., Δt is the temperature difference [Δt = t− 15] (° C.), K ₀ , K ₁ , A, and B are constants determined to different values depending on the oil type (see the list of oil type constants shown in FIG. 10).
[0046]
If the volume conversion coefficient (VCF) of the reference temperature (15 ° C.) is calculated each time with respect to the temperature of the sampled oil according to the above arithmetic expressions (1) to (3), the load on the host computer 3 increases. As a result, other shipping control may be hindered.
[0047]
However, in this embodiment, the host computer 3 samples the temperature of the oil liquid at regular intervals, calculates the volume conversion coefficient (VCF) of the detected temperature, and stores it in the temperature sampling database 51. Then, the host computer 3 reads the latest volume conversion coefficient (VCF) updated every predetermined time from the temperature sampling database 51 at the time when the loading of the oil liquid into the tank truck 5 is completed in S35 described above, Based on the arithmetic expressions (1) to (3), the temperature correction calculation process for the loading amount can be executed, and the loading amount at the reference temperature (15 ° C.) can be stored in the storage means.
[0048]
Therefore, in the host computer 3, when managing the stock amount of the oil liquid stored in the storage tank 41, the unloading amount of the oil liquid unloaded from the tanker 43 to the storage tank 41 and the loading amount into the tank truck 5. The amount of oil liquid loaded with respect to the reference temperature (15 ° C.) can be accurately managed so as not to cause an error due to a temperature difference between.
[0049]
Accordingly, an error between the unloading amount from the tanker 43 and the integrated value of the loading amount to the tank truck 5 can be eliminated. Further, since the loading time into the tank truck 5 is relatively short, the temperature of the oil liquid hardly changes between before loading and at the time of loading completion. Therefore, the temperature of the oil liquid measured after the oil liquid loading is completed. By collectively correcting the temperature based on the above, the burden on the host computer 3 in the oil tank can be reduced.
[0050]
In the above embodiment, the case of unloading from the tanker 43 to the storage tank 41 in the oil tank station is taken as an example. However, the present invention is not limited to this, and the unloading to the storage tank 41 in the oil tank station using other transport means is possible. Of course, it can also be applied to an oil tank station of the type.
【The invention's effect】
As described above, according to the present invention, every time the loading amount of the oil liquid loaded in the hatch of the tank truck is received from the plurality of shipment control devices, the volume conversion coefficient stored by the storage means at the time of loading is used. Accurate loading of the oil loaded in the tank truck even if the temperature of the oil changes, because the amount loaded in the hatch of the tank truck is converted into a volume flow corresponding to a predetermined reference temperature. The amount can be recorded, and an error between the unloading amount from the tanker and the integrated value of the loading amount to the tank truck can be eliminated. Moreover, the burden on the computer in the oil tank can be reduced by collectively correcting the temperature based on the temperature of the oil liquid measured after the oil liquid loading for each hatch is completed.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a schematic configuration of an oil tank station to which an embodiment of a shipping system of the present invention is applied.
FIG. 2 is a configuration diagram showing a schematic configuration of a shipping system.
FIG. 3 is a perspective view showing a state in which oil liquid is loaded on a shipping stage 7;
FIG. 4 is a block diagram showing connections between devices of the shipping system.
FIG. 5 is a diagram for explaining a data processing procedure of data communication between devices in the shipping system.
FIG. 6 is a flowchart for explaining a control process executed by the shipment control device 4;
FIG. 7 is a flowchart for explaining temperature sampling processing;
FIG. 8 is a diagram schematically showing a temperature sampling database 51 in which temperature data of oil liquid sampled at regular intervals by the host computer 3 is stored.
FIG. 9 is a flowchart for explaining temperature correction calculation processing executed by the host computer 3;
FIG. 10 is a diagram illustrating values of oil types of constants K ₀ , K ₁ , A, and B in the arithmetic expressions (1) to (3).
[Explanation of symbols]
1 shipping device 4 shipping control device 2 hatch setting device 3 host computer 4 shipping control device 5 tank truck 7 shipping stage 14 card reader 15 computer 18 loading setting device 25 loading arm 27 car number card 35a transmission request notification 35b customer data 35c hatch assignment Data 36 Transmission request notification 37 Customer data 38 Hatch allocation data 39, 40 Loading completion data 41 Storage tank 43 Tanker 46 Temperature detector 51 Temperature sampling database

Claims (1)

A shipping management computer for managing the oil liquid loaded into the tank truck,
A hatch setter for setting the type of oil to be loaded into each hatch of the tank truck, and the loading amount;
A supply path for loading the hydraulic fluid stored in the tank oil bases hatch of the tank lorry vehicle,
A volumetric flow meter and an on- off valve provided in the supply path ;
When the integrated value of the volume flow rate measured by the volume flow meter reaches the predetermined loading amount set by the hatch setting device, the predetermined loading amount to the hatch of the tank truck is closed by closing the on-off valve. A plurality of shipping control devices for loading ,
In the shipping system with
Providing temperature measuring means for measuring the temperature of the oil liquid loaded in the hatch of the tank truck every predetermined time;
The shipping control device is configured to transmit the loading amount of the oil liquid loaded in the hatch whenever the loading of the oil liquid into each hatch of the tank truck is completed,
The shipping management computer
A calculation means for calculating a volume conversion coefficient for each predetermined time based on the temperature measurement value measured by the temperature measurement means;
Storage means for storing the volume conversion coefficient calculated by the calculation means together with the temperature measurement time by the temperature measurement means;
Each time the amount of oil liquid loaded in the hatch of the tank lorry vehicle is received from the shipping control device, it is loaded into the tank of the tank lorry vehicle using the volume conversion factor stored by the storage means at the time of loading. Temperature correction means for converting the loading amount into a volumetric flow rate corresponding to a predetermined reference temperature;
A shipping system characterized by comprising:

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