JPH036077B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a multi-chamber tank in which each chamber of a multi-chamber tank having chambers of different capacities individually stores and transports a load such as a liquid or powder or granular material. This device relates to a tank cargo overflow prevention device and is used in the field of preventing cargo from overflowing from a multi-chamber tank by avoiding situations in which a larger amount of cargo is supplied than the chamber capacity. .

[Conventional technology]

As shown in Figure 1, 1Kl (kiloliter), 2
Rooms 1A and 1 with different capacities such as Kl and 4Kl
The work of loading objects 2 such as liquid or powder into each chamber of the multi-chamber tank 1 having B and 1C is as follows:
Conventionally, this is done as follows. Room capacity 1Kl
When loading 1Kl into the chamber 1A of the storage base 3, as shown in FIG. The loading port 5a is inserted into the manhole 6A of the chamber 1A.

After confirming that the bottom valve 7A of the chamber 1A is closed, a switch (not shown) is pressed to open the metering valve 9 interposed in the transport pipe 8 for pumping the cargo 2 in the underground tank 3a. When the objects 2 to be loaded are sequentially loaded into the chamber 1A via the transport pipe 8 and the loading arm 5, a flow meter 10 interposed in the transport pipe 8 detects the loading amount. When the loading amount specified by the operator in advance is detected, the metering valve 9 provided upstream of the flow meter 10 automatically closes, and loading into the chamber 1A ends. Similarly, predetermined amounts are loaded into the other capacity chambers 1B and 1C.

[Problem to be solved by the invention]

In the above cases, workers sometimes misunderstand or make incorrect operations, specifying a loading capacity that is larger than the capacity of the chamber in which the loading arm is inserted, or inserting the loading arm into a chamber whose capacity is lower than the specified loading capacity. If the metering valve is inserted, the metering valve will not close until it detects the loading flow rate specified by the operator, resulting in a situation where the excess loaded material overflows through the manhole in the chamber.

Also, if you mistakenly specify a loading capacity that is smaller than the chamber capacity and then load that amount, there will be no overflow, but if you subsequently try to load a different type of load equal to the chamber capacity, other objects may The disadvantage is that the capacity of the chamber is so small that it can no longer be loaded.

By the way, Japanese Utility Model Application No. 56-156798 discloses an indicator installed near the manhole of the hatch of a tank truck to indicate the capacity of the hatch, and an indicator connected to the indicator during liquid supply to indicate the capacity of the hatch indicated on the indicator. A liquid supply control device is described that includes a reader that reads the hatch capacity, and a liquid supply limiter that limits the amount of liquid supplied to the corresponding hatch from the read hatch capacity to below the hatch capacity.

According to this, when feeding liquid, by connecting the connector of the reader to the capacity indicator, the liquid supply limiter limits the liquid supply amount to below the hatch capacity. Therefore, overflow accidents can be reliably prevented.

However, since the liquid is supplied within the hatch capacity, a situation arises in which liquid is also supplied to hatches with small capacities that are not intended to be loaded.
In other words, there is no question of whether or not a hatch with the desired capacity has been selected, so if it is later discovered that the wrong hatch was loaded, the remaining amount of liquid can be transferred to another hatch. It will have to be loaded. In this case, it is not possible to load other liquid types as planned, and the loading and transportation schedule is greatly disrupted, which may not be in accordance with the actual transportation situation.

The present invention has been made to solve the above-mentioned drawbacks, and its purpose is to avoid misunderstandings and operational errors by operators when loading each chamber with the desired loading amount, and to
To prevent overflow from occurring due to mistaken specification of loading capacity in rooms with different room capacities;
In addition, by preventing cargo from being loaded in chambers other than the desired chamber capacity, transportation preparations can be carried out as scheduled, and reliability during loading can be improved. An object of the present invention is to provide an overflow prevention device.

[Means to solve the problem]

In order to avoid mistakes in specifying the loading amount when loading objects via a loading arm into each chamber of a multi-chamber tank that has chambers with different capacities, the present invention has been developed for each chamber. It is applied to a device that prevents overflow during loading in a multi-chamber tank whose loading capacity can be detected.

Its characteristics are as shown in Figure 3.
An operation box that moves together with the loading arm is provided near a loading port formed at the tip of the loading arm, and a load amount specifying body 18 for specifying a desired load amount is mounted on the operation box. A loading room specifying connector 19 for specifying a desired chamber, and a loading amount specifying connector 20 having a built-in actuator having the same number of circuits as the type of room capacity for transmitting commands received from the loading amount specifying body 18.
It is suspended in the control box. Each chamber is provided with a chamber connector 21 that operates a built-in switch when the loading chamber designation connector 19 is connected, and when the loading capacity designation connector 20 is connected, one of the built-in switches of the same number as the actuator is designated. One load transfer connector 22 for detecting the load is provided in the multi-chamber tank.

The load capacity corresponding to the built-in switch of the chamber connector 21 is selected from among the load capacity of each chamber stored in advance, and the specified load is selected by a signal from the built-in switch of the load capacity transmission connector 22. Loading control means 23 is mounted on the vehicle body to specify the amount and determine whether the available loading amount matches the specified loading amount. Further, an alarm means 24 is provided which issues an alarm in response to a signal from the loading control means 23 when the designated loading amount and the available loading amount do not match.

〔Example〕

Hereinafter, the present invention will be explained in detail based on examples thereof.

FIG. 4 shows a multi-chamber tank car 16 equipped with a multi-chamber tank load overflow prevention device according to the present invention.
This is an overall diagram. Reference numeral 17 in the figure is a loading operation box that moves together with the loading arm 5. This operation box 17 is provided near the loading port 5a formed at the tip of the loading arm 5, and is used to specify the loading amount. A body 18 is attached.
Reference numeral 19 indicates a loading room designation connector, and 20 a load capacity designation connector, both of which are suspended from the operation box 17.

Reference numeral 21 (21A to 21C) is a chamber connector provided for each of the chambers 1A to 1C, and 22 is a loading capacity transmission connector provided in the multi-chamber tank 1. 23
Reference numeral 24 indicates a loading control means for determining whether the load capacity of the chamber into which the loading arm 5 is inserted matches the load capacity specified by the operator; 24 indicates a load control means 23 when the specified load capacity does not match the load capacity; This is an alarm means that issues a warning to the worker using a signal from the machine.

To explain these in detail, the loading amount designator 18 is a dial-type designator provided in the operation box 17 and used by the operator to designate the loading amount. The loading chamber designation connector 19 is a connector having a built-in permanent magnet 19a as shown in FIG. 5, for example, and is connected to a chamber connector 21 provided in the chamber into which the loading arm 5 is inserted.

The load capacity designation connector 20 has built-in actuators 25, which are electromagnets 25A to 25C, which form three circuits with different chamber capacities (three shown), in order to transmit commands received from the designator described above. ing.

Each of the chamber connectors 21 incorporates one reed switch which becomes energized, for example, when the permanent magnet 19a described above is inserted, and the operation signal of this switch is inputted to the loading control means 23.

The load transmitting connector 22 is configured to operate the reed switches 22A to 22C by one of the three electromagnets 25A to 25C, which is excited by power from a power supply (not shown) in response to a command from the operator at the load designation body 18. The corresponding switch is energized and its operation signal is input to the loading control means 23.

The loading control means 23 operates the chamber connector 2 from among the loading capacity of each chamber stored in advance.
The system selects the load capacity corresponding to the first reed switch, specifies the specified load capacity based on the signal from the load capacity transmission connector 22, and determines whether the load capacity corresponds to the specified load capacity. As shown in the figure, the microcomputer is mounted on a vehicle body (for example, a driver's cab) and includes a room capacity storage section 26, a loadable capacity selection section 27, a load specification section 28, and a loadability determination section 29.

The alarm means 24 is, for example, a buzzer or the like, and is provided at the rear of the operator's cab 30 so that the operator on the multi-chamber tank 1 can easily hear the alarm. This is to prevent objects from being loaded when the designated loading amount and the available loading amount do not match.

In addition, instead of the permanent magnet 19a of the loading room designation connector 19 and the three electromagnets 25A to 25C of the load capacity designation connector 20 described above, the former is a fixed shaft, and the latter is a shaft-type actuator that can freely move forward and backward. In place of the reed switches for the chamber connector 21 and load capacity transmission connector 22, a limit switch that operates according to the operation of the shaft described above may be adopted, and as long as it has the function described above, it may be electrically or mechanically operated. Any mechanism can be selected and used.

Further, as shown in FIG.
However, conventionally, operation management of this type of multi-chamber tank car, such as the type of cargo, the amount of cargo, etc.
The above-mentioned microcomputer is installed in the vehicle body to manage matters related to unloading and loading, date of operation, driver name, mileage, amount of fuel consumed, and other matters related to driving. By providing this function, it is not necessary to install a new control means to carry out the present invention. Furthermore, it goes without saying that the alarm means 24 is not limited to a buzzer or the like, but may employ other devices that can be recognized by the five senses.

According to the embodiment of the configuration described above, an amount corresponding to the capacity can be loaded into each chamber of the multi-chamber tank in the following manner, and it is possible to prevent the load from overflowing from the manhole. be able to. The explanation will be made with reference to the flowchart shown in FIG.

First, after loading the multi-chamber tank car 16 alongside the loading rack 3A of the storage base 3 shown in FIG. Arm 5
Insert the loading port 5a. Connect the loading compartment designation connector 19 suspended near the loading port 5a to compartment 1.
B (step 1 of the flowchart, hereinafter referred to as S1), and insert the load capacity designation connector 20, which is integrated with three electromagnets 25A to 25C, into the load capacity transmission connector 22 (S2). ).

At this time, the permanent magnet 19a causes the chamber connector 2 to
The reed switch 1B is connected by magnetic force (S3) and becomes energized. On the other hand, when the operator specifies the loading capacity to 2Kl using the loading capacity designator 18 of the operation box 17 (S4), only the electromagnet 25B receives power and is energized (S5), and the reed switch 22
B is connected by the magnetic force (S6) and becomes energized. By connecting these reed switches, a loading chamber signal and a loading amount signal are input to the loading control means 23.

In the loading control means 23, the loading capacity selection unit 27 selects the loading capacity corresponding to the reed switch of the chamber connector 21B that is activated from among the loading capacity of each chamber stored in advance in the chamber capacity storage unit 26. The designated loading amount is selected (S7), and the loading amount specifying section 28 specifies the designated loading amount based on the signal from the reed switch 22B (S8). Then, the loadability determining unit 29 determines whether the values of the loadable amount and the designated load amount match each other (S9).

In this operation, both are the same, so
No alarm is issued by the buzzer (S10), and the operator presses the loading start command button 31 on the operation box 17.
When is pressed (S11), the metering valve installed in the loading rack 3A is opened and loading from the loading arm 5 to the chamber 3B is started (S12). In addition,
Once complete, as mentioned in the conventional technology,
The metering valve closes or the pump stops automatically.

By the way, in step 4 described above, the load capacity designator 18 sets the load capacity to an amount other than 2Kl, for example, 4KL.
When , only the electromagnet 25C receives power from the power supply and is excited (S5), and the reed switch 22C is connected by the magnetic force (S6) and becomes energized.
Through this connection, a loading amount signal is input to the loading control means 23, and the loading possibility determining section 29 determines that the possible loading amount does not match the designated loading amount (S9). As a result, an alarm is issued by the buzzer of the alarm means 24 in response to a signal from the loading control means 23 (S13).

Since this alarm is issued immediately after the operation on the loading capacity specifying body 18, it is possible that there is an error in specifying the loading capacity before the operator presses the loading start command button 31. You can check whether there is an insertion error. If any of the errors is corrected, the buzzer alarm will stop, so press the loading start command button 31 (S11) to drive the pump and start loading.

Note that since the multi-chamber tank car 16 differs depending on the vehicle type or vehicle, the load capacity of each chamber in the chamber capacity storage section 26 of the loading control means 23 mentioned above can be set arbitrarily in advance according to the multi-chamber tank 1 mounted thereon. Can be set to . Therefore, after the device of the present invention is mass-produced and mounted on a vehicle body, if the loadable capacity of each compartment is stored in accordance with the vehicle, predetermined operations can be performed.

In the above embodiments, three types of chamber capacities have been described as examples, but it goes without saying that the same concept can be applied to a multi-chamber tank with two or more chambers having two or more types of chamber capacities.

〔Effect of the invention〕

As explained in detail in the above embodiment, if the load capacity of the chamber into which the loading arm is inserted does not match the specified load capacity specified by the operator,
Since an alarm is issued by the alarm means, the operator can immediately notice that an error has occurred in the operation. As a result, it is possible to avoid supplying each chamber with loads exceeding its capacity, which prevents misunderstandings and incorrect operations by operators when loading each chamber with the desired loading amount. It is possible to avoid overflows caused by mistakenly specifying the loading amount in the room.

In addition, it is possible to load the type and amount of the planned load into a chamber with a predetermined capacity without making any mistakes.
You can also avoid loading amount mistakes due to mistakes. Therefore, it is possible to ensure the transportation system as scheduled,
This will improve reliability during loading.

[Brief explanation of the drawing]

Fig. 1 is a front view of a multi-chamber tank car equipped with multi-chamber tanks having chambers of different capacities, Fig. 2 is a diagram of a conventional loading state at a storage base, and Fig. 3 is a block diagram of the overflow prevention device of the present invention. , Fig. 4 is a sectional view of a multi-chamber tank car to which the present invention is applied, Fig. 5 is a sectional view of a connector applied to chambers of different capacities and a connector for transmitting a specified load, and Fig. 6 is an operating procedure. FIG. 7 is a flowchart showing the loading state at the storage base. 1...multi-chamber tank, 1A, 1B, 1C...chamber,
2... Loaded object, 5... Loading arm, 5
a...Loading port, 17...Operation box, 18...
Loading capacity specification body, 19...Loading room specification connector, 2
0... Loading capacity specification connector, 21, 21A ~ 21
C... Chamber connector, 22... Loading capacity transmission connector, 23... Loading control means, 24... Alarm means,
25... Actuator.

Claims (1)

[Claims] 1. In order to avoid mistakes in specifying the loading amount when loading objects via a loading arm into each chamber of a multi-chamber tank having chambers of different capacities,
In a device for preventing overflow during loading in a multi-chamber tank in which the loading capacity of each chamber can be detected, an operation box that moves together with the loading arm is connected to the loading arm. It is provided near the loading port formed at the tip, and a loading capacity specifying body for specifying a desired loading capacity is mounted on this operation box, and a loading room specifying connector for specifying a desired chamber and the loading capacity specifying body are mounted on the operation box. In order to convey the instructions received from
A loading capacity designation connector containing a built-in actuator having the same number of circuits as the type of room capacity is suspended from the operation box, and a compartment connector that operates a built-in switch when the loading compartment designation connector is connected is connected to each room. The multi-chamber tank is provided with a load capacity transmission connector that detects the specified load capacity when the load capacity designation connector is connected, and one of the built-in switches of the same number as the actuators thereof detects the specified load capacity. The load capacity corresponding to the built-in switch of the operating room connector is selected from among the load capacity of each chamber, and the specified load capacity is specified by the signal from the built-in switch of the load capacity transmission connector. , a load control means is mounted on the vehicle body for determining whether the load capacity and the specified load capacity match, and an alarm means for issuing an alarm by a signal from the load control means when the specified load capacity and the load capacity do not match. A load overflow prevention device for a multi-chamber tank, characterized by comprising: