JPS60193896A - Detector for kind of housing liquid for storage tank - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for detecting the type of liquid contained in a storage tank. This is used in the field of preventing confusion of liquid types when discharging different types of liquids into a storage tank or loading them into a vehicle from a storage tank.

[Prior art]

When discharging the desired liquid type at a gas station, etc. from a tank truck that transports one or more types of liquid,
If a hose for discharging liquid is connected to a storage tank storing a different type of liquid, the type of discharged liquid and the stored liquid may be different due to the wrong choice of storage tank when discharging the liquid or the display of the liquid type on the storage tank is faded. A situation arises where the species no longer match. In order to avoid this, two types of storage tanks with built-in current-carrying bodies having different shapes for different types of stored liquids have been proposed.
The LJ connector is installed and the energizing terminal that can be connected to either connector moves along with the vehicle hose.
A device has been proposed in which the type of liquid contained in the storage tank can be determined by connecting the energizing terminal and the connector to confirm whether or not the liquid can be discharged. However, if the liquid to be determined is highly flammable, using electricity to detect the type of liquid may cause a fire or tank explosion due to sparks or electrical leakage when connecting connectors. There is a problem that there is a possibility of falling into an extremely dangerous situation.

(Purpose of the Invention) The present invention was made in view of the above-mentioned problems, and its purpose is to eliminate misunderstandings and mistakes made by workers when discharging a desired liquid type into a storage tank or loading it from a storage tank into a vehicle. Provided is a liquid type detection device for a curved tank, which can reduce the amount of work required for liquid type detection, and can perform safe discharge work by avoiding the risk of liquid igniting during detection work for liquid type discrimination. It is to be.

[Structure of the invention]

The features of the present invention will be explained with reference to FIGS. 1 and 2. A light emitting source 11, a light receiving sensor"1112, and an optical fiber 13 for transmitting light between these are installed in the vehicle 10,
A light transmitting member 18 that transmits the light from the light emitting source 11 in different amounts of light is built into the optical fiber filter 17 installed in each storage tank, and transmits the light from the light receiving sensor 12 in accordance with the amount of light received by the light receiving sensor 12. This is a storage tank storage tank liquid type detection device that detects a stored liquid type signal and manually inputs this signal to an operation command control device 20 mounted on a vehicle 10.

〔Example〕

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

As not shown in FIG. 1, a vehicle IO equipped with a multi-chamber tank 3 is provided with a light emitting source 11, a light receiving sensor 12, and an optical fiber 13 for transmitting light between them. This optical fiber 13 consists of a fiber 138 that sends out light from the light emitting source 11 and a fiber 13B that returns the light to the light receiving sensor I2.
4 are installed along or independently from the υY outlet port 14 connected to the discharge pipe 1 communicating through A to 60. On the other hand, each injection IJ of the plurality of storage tanks 15a to 15C at the gas station l5
Optical fiber connectors 17a, -17c, as shown in FIG. has been done.

The transmittance of the light transmitting member 18 is determined depending on the type of liquid contained in the storage tank; for example, the transmittance is 100% for gasoline, 60% for kerosene, and 30% for light oil.
It has been made different in advance. The light I after passing through such a light transmitting portion Q18 will impair the liquid type discrimination performance of the light receiving sensor 12 unless all of it returns.

In order to avoid this, the golden light after passing through the fiber 13
A light transmitting part +A18 is fixed at the center of the optical fiber connector 17 so that the light can be returned to the optical fiber connector 17. They are fixed so that they are facing each other. Note that the vehicle 10 is equipped with an operation command control device 20 such as a microcompigo, etc., in which the liquid type determined by the light receiving sensor 12 is manually input. This device 20 operates in response to a contained liquid type signal detected according to the amount of light received by the light receiving sensor 12. As an example of a simple operation command control, °ζ is such as lighting a lamp 22 corresponding to the liquid type on the display panel 21 as shown in Fig. 3, or making an electronic sound to indicate the liquid type. It has the function of

According to such an embodiment, safety G is achieved as follows.
In addition to being able to detect the type of liquid in this storage tank,
This can prevent confusion of discharged or loaded liquid types due to worker's mistake.

Assuming that the vehicle tank is a multi-chamber tank 3 that stores gasoline, kerosene, and diesel oil individually in each chamber, when the kerosene loaded in one of the chambers is discharged into the kerosene tank of the gas station 15. This will be explained using an example. As shown in FIG. 1, an operator connects the hose 14 connected to the discharge pipe 1 to the inlet 16 of the kerosene tank 15C of the storage tanks.

At the same time, the optical fiber 13 is let out from the vehicle,
The socket 19 provided at the end of the kerosene tank 15c
Connect to the optical fiber connector 17C near the injection port. Note that if the optical fiber 13 is taken out along the port 14, the socket 19 can be connected without fail to the optical fiber connector of the storage tank to which the hose 14 is connected. When this connection information is input to the operation command control device ``W20'', a predetermined amount of light is emitted from the light emitting source 11 in response to a signal from the device 20.

When this light is transmitted to the socket 19 via one fiber 13A of the optical fiber 13, the light is attenuated when passing through the light transmitting member 18 in the optical fiber connector 1f. Since the transmittance of the light transmitting portion +A18 in the case of kerosene is set to 60%, for example, the optical fiber 13B returns the light to the light receiving sensor 12. The light receiving sensor 12 converts the amount of light into an amount of electricity, and the contained liquid type signal is input to the operation command control device 20. Operation command control device 20
Then, from that signal, it is determined that it is kerosene. and,
The fact that the storage tank connected to the Bose 14 stores kerosene is indicated by lighting a lamp 22 shown in FIG. 3 or by emitting an electronic sound. If such a display indicates kerosene, the operator connects the socket 19 to the connector of another storage tank and repeats checking one after another until the displayed liquid type is kerosene. When it is confirmed that it is kerosene, the 1J1 outlet valve 2 is opened, and after confirming that kerosene is stored in the chamber 3B by checking the display board 4 on the top or side of the multi-chamber tank 3, operation handle 5
B opens the bottom valve 6B. Even if a worker makes a misunderstanding or makes an erroneous operation during such work and continues the work without noticing it, other workers can judge whether the work is correct or not from the lighting of a lamp or the like. Therefore, it is possible to make it possible for a third party to point out the problem and to make it easier for the operator to reconfirm the problem himself, thereby reducing the frequency of discharging mixed liquid types.

In addition, the "operation" command and control device 20 determines whether the specified discharged liquid type matches the storage tank storage tank type, whether the loaded liquid type matches the storage tank storage tank type, or the alarm generation command function in the event of a mismatch. If the discharge prevention command function and the like are activated, confusion of discharged liquid types can be more reliably prevented.

Also, check whether the liquid type specified by the operator using a separate liquid type specifying device matches the liquid type in the storage tank, or check whether the liquid discharged from the multi-chamber tank 3 and the liquid in the storage tank into which it is injected. If the liquid types do not match, an alarm will be issued, and a locking device installed separately on the discharge pipe 1 will be activated to discharge the liquid. It is also possible to automatically issue commands such as 1. Further, the same concept can be applied to loading the vehicle 10 from any of the storage tanks 258 to 25C of the base 25 shown in FIG. Zunawara,
Prior to inserting the loading arm 26 into the vehicle tank 3, if the socket 19 of the optical fiber 13 is connected to the optical fiber connector 17 of the storage tank corresponding to the loading arm 26, confusion of liquid types can be prevented before loading. be able to. Of course, there are two manholes in each room.
A proximity switch 28 is attached to 7 to detect when the man ball is opened. The chamber can also be stored in memory.In this case, when discharging, when the corresponding operating lever 5 is turned to open the bottom valve 6 of one of the chambers shown in FIG. The discharge chamber is specified by the switch 29, and the type of discharged liquid is determined thereby.

At this time, the liquid type in the storage tank to which the discharge destination is to be discharged is input manually and checked to see if it matches.The operator checks whether the liquid type matches by lighting a lamp or sounding a buzzer. be able to. If they match, the desired liquid type may be discharged by opening the discharge valve 2.

By the way, since such liquid type detection is performed via the optical fiber 13, it is possible to avoid using electricity for detection. Therefore, even if the liquid subject to liquid type discrimination is a highly flammable liquid such as the above-mentioned gasoline, sparks will not be generated when the connector is connected, and there will be no electrical leakage. An extremely dangerous situation such as an explosion cannot occur.

In the embodiment described above, the discharge from one chamber of a multi-chamber tank that transports three types of liquids has been described. Needless to say, the present invention can also be applied to cases where discharge is to be carried out into any one of a plurality of storage tanks, regardless of the number of chambers in the tank.

〔Effect of the invention〕

As explained in detail in the above embodiments, the present invention makes it possible to confirm the type of liquid stored in the storage tank using an optical fiber, so that it is possible to check the type of liquid discharged or loaded liquid due to operator's misunderstanding or erroneous operation. Confusion of species can be avoided as much as possible. In addition, since no electricity is used for detection,
Eliminates situations where flammable liquids ignite due to sparks or electrical leakage, ensuring safety during liquid discharge work.

[Brief explanation of the drawing]

Fig. 1 is a diagram of a liquid discharge operation using the device for detecting the type of liquid contained in a storage tank according to the present invention, Fig. 2 is an enlarged view of the vicinity of injection 1 in the storage tank, and Fig. 3 shows the detected liquid type. An example of a panel, FIG. 4, is a diagram of a liquid loading operation. l〇-vehicle, 11 light emitting source, 12 light receiving sensor, 13.
13A, 13B-Optical fiber, 15a~] 5cm storage tank, 17.17a-17cm optical fiber connector, 1
8 Light transmitting part shrine, 20 Operation command control device Figure 1

Claims (1)

[Claims] (1) A light-emitting source, a light-receiving sensor, and an optical fiber that transmits light between these are installed in the vehicle, and a light transmitting part that transmits light from the light-emitting source in different amounts of light is installed in each storage tank. It is built into the optical fiber connector, and the contained liquid type signal is detected according to the light reception level of the light reception sensor, and this signal is input to the operation command control device mounted on the vehicle. A device for detecting the type of liquid contained in a storage tank.