JPS60252244A - Detecting device of loaded liquid sort on tank lorry - Google Patents

Abstract

PURPOSE:To prevent the misunderstanding of a worker and a misoperation and to avoid the risks of an ignition during a detecting work, etc. by providing a liquid sort identifying sensor in each tank room and by detecting correctly and easily the sort of a liquid so as to identify directly the liquid sort with the reflection of a light. CONSTITUTION:A light emitting source 4, light detecting sensor 5 and optical cable 6 communicating with a light among those are fitted to a vehicle 3 loading a tank 2 consisting of plural tank rooms 1. A liquid sort identifying sensor 7 is installed on the way of the cable 6 of the inside of each tank room. The sensor 7 pays an attention to the optical nature (for instance the refractive index) owned by the liquid to be loaded being varied by the liquid sort and detects the liquid sort from the differential degrees thereof. The sensor 7 thus detects the liquid sort directly from the liquid loaded and the reflection of the light of the detecting signal thereof is transduced into an electrical signal by the sensor 5 and inputted into a controlling means 10 and displayed or memorized.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for detecting the type of liquid loaded in a J filtration tank in a tank chamber. This invention relates to a device that is capable of detecting the type of liquid loaded in a tank chamber in advance before unloading it into a storage tank. This can be done, for example, by combining similar or different liquids in one
Alternatively, it is used in the field of tank crawling, where vehicles are loaded into multiple tank compartments.

[Prior art]

A multi-chamber tank truck that transports liquids of the same type or different types, particularly in tanks 1-1, where different types of liquids, such as gasoline, kerosene, and diesel oil, are loaded individually in each tank room. At L: 1, as the loading and unloading work into each tank room was repeated, the type of liquid loaded in each tank was 1.
'1j may not be available. For this purpose, a display board is installed on the outside of the tank, but if a worker mistakenly opens the bottom valve of a tank chamber other than the designated one, it will indicate that the unloading liquid type is mixed up. In other words, kerosene that has been transported together with gas oil or other fuel may be unloaded into a gas oil storage tank at a gas station, resulting in a mistake. To solve this problem, a 1llt electric body with a stomach-like shape is installed in every +1!4 tank at the loading terminal, which accommodates different liquid types, and can be connected to any of the built-in connectors. An energizing terminal is installed on the vehicle side, and the type of loaded liquid can be determined by connecting the energizing terminal and the connector, and a limiter is attached to each manhole in each tank room to identify the tank chamber where the liquid is loaded. Note 1: A device has been proposed in which the type of liquid and the tank chamber are displayed using a lamp so that the type of liquid can be confirmed at the time of unloading.

Toko 7. If the liquid to be determined is highly flammable, if two consecutive electrical signals are used to detect the type of liquid, fires may occur due to sparks or fan-shaped sparks when connecting connectors. There is a problem in that there is a possibility of extremely dangerous situations such as explosion of the tank or explosion of the tank. In addition, since the loaded liquid type is detected via a heavy electric device (which is installed corresponding to each liquid type), the loaded liquid may be marked as the wrong type due to incorrect connection of the energizing terminal, etc. Then, even if there is no f-difference during unloading, /kundong will occur in the liquid type unloaded into a storage tank at a gas station or the like.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned problems, and its purpose is to be able to easily and directly detect the type of liquid loaded in a tank chamber, and to reduce the noise of work when unloading the desired liquid type. This is a tank truck that can prevent misunderstandings and incorrect operations, and also ensure safe unloading work by avoiding situations such as liquid catching fire during detection work to determine the type of liquid. An object of the present invention is to provide a loading liquid type detection device.

[Structure of the invention]

The features of the LJ filtration type detection device for a tank truck according to the present invention will be explained with reference to FIGS. 1 and 2. When the optical cable 6 attached to the vehicle comes into contact with or immerses in the liquid 9 loaded in the tank chamber 1, the light from the light emitting source 4 is affected by a reaction force of 1 depending on the type of night.
A liquid type identification sensor 7 is installed, and a liquid type signal from the light receiving sensor 4I'5 is inputted to the control means 10 which instructs a predetermined operation.

〔Example〕

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

A tank 2 consisting of a plurality of tank chambers 1 as shown in FIG.
A light emitting source 4, a light receiving sensor 5, and an optical cable 6 for transmitting light between these are interrogated in a vehicle 3 equipped with a light emitting source 4. This optical gauge 6 consists of an optical fiber halo M that sends out light from the light emitting source 4 and an optical fiber halo N that returns the light to the light receiving sensor 4. An identification sensor 7 is installed. This liquid type identification sensor 7 focuses on the fact that the optical properties of the loaded liquid differ depending on the liquid type, and detects the liquid type based on the degree of difference. For example, as shown in FIG. A method that utilizes the difference in the refractive index of the liquid 9 in contact with the reflective surface 80 is adopted. In this example, the type of liquid is detected from the different amounts of light reflected from the LJ on the non-conforming surface 8a of the prism. In this way, the liquid type identification sensor 7 directly detects the liquid type from the loaded liquid, and the detection signal, which is the amount of reflected light, is converted into an electrical signal by the light receiving sensor 5 and input to the control means 10. It has become so.

The control fifl1 means 10 is a relay circuit, a microphone D computer, etc., which commands the production 1 [1+ in a predetermined manner, and receives the loading llk type signal from the light receiving sensor 5, and controls the control fifl1, for example, as shown in FIG. Among the liquid type lamps PLi to PL9 arranged in the display panel 11'2 for tank chambers, the lamp corresponding to the liquid is lit, and the liquid type for each tank chamber is indicated in 1. It is designed to be stamped.

In an embodiment with such a configuration, the type of liquid loaded as described above is detected, and it is displayed or stored. 1% of the liquid type is prevented.

Although not shown, there are various types of equipment at the loading base. A large number of base tanks are installed to store liquids individually, and each base tank has a loading rank with a loading arm for loading liquid onto a tank truck.

When a tank truck is brought to the loading rank where the desired liquid type is displayed in order to load the desired liquid type, tank room 1 is loaded.
The man ball 12 is opened and the Ll-ding arm is inserted to initiate the desired amount of loading force. For example, tank room I
When gasoline is loaded into tank B, the light from the light source 4 is transmitted via the optical fiber halo M of the optical cable 6 according to a command from the liquid type identification sensor 7B6 installed in the room and the control means 10. Ru. When the liquid level of gasoline rises and begins to come into contact with the lower surface of the liquid type identification sensor 7B shown in FIG. Therefore, the amount of reflected light on that surface changes. By the way, the refractive index of gasoline is not only different from that of air, but also increases with kerosene and diesel oil, so
The reflection light meter transmitted to the light receiving sensor 5 has a value specific to gasoline. When the amount of reflected light is converted into electric light by a photodiode or the like, it is manually inputted to the lower control stage 10. After the signal is amplified, the type of liquid is determined by a comparison circuit, and the switch corresponding to gasoline in the tank chamber 1B is turned on accordingly. As a result, it is stored in section 1a of the control means 10 that gasoline is loaded in the tank chamber IB. Also, together with or in place of it, a third
Of the liquid type lamps (not shown) arranged on the display panel 11, only lamps P1 and P4 are turned on. Similarly, the other tank chambers IA and IC are loaded with, for example, kerosene and light oil, respectively, and are stored therein, as well as the lamp PI of the display panel 11.

2, Pl, 9 should be lit. When the loading work into each tank chamber is completed, the man ball 12 is closed,
In addition, the transmission of light to the liquid type identification sensor 7 is stopped by a command from the till 1 control means 10, and the tank truck moves toward the next gas station. Note that the liquid type detection is performed via the optical cable 6 in this way.
, direct use of electricity for detection is avoided, and even if the liquid to be determined is a highly flammable liquid such as the above-mentioned kalin, there is no risk of fire or tank explosion caused by sparks or electrical leakage. Extremely dangerous situations such as this can be avoided.

When the vehicle 3, which has kerosene, gasoline, and diesel oil individually loaded in each compartment, reaches the destination gas station, a worker inserts a port (not shown) connected to the discharge pipe 13 into the kerosene storage tank of the storage tank. Connect to the inlet. and,
The operator looks at the display panel 11, confirms the tank chamber in which the kerosene to be unloaded is loaded, and turns the operating handle 14B provided on the tank chamber IB to open the bottom valve 15B. During this L/Una work, due to a worker's misunderstanding or incorrect operation, the operator of the tank room IA]-4A was turned and the work continued without noticing, but other workers were unable to turn on the lamps, etc. It is possible to judge whether the work is correct or not. Therefore, the third party's point out and the worker's own reconfirmation become effective, and the frequency of confusion of unloading liquid types can be reduced.

In addition, if the loaded liquid type is stored in the control means for each tank room as described above, if the operator is allowed to separately specify the unloading liquid type, the specified liquid type and the loaded liquid type will be It is possible to determine whether or not there is a match, and issue an alarm as necessary.

Also, i! [! If it is possible to separately detect the type of liquid stored in the storage tank at the destination, it is determined whether the stored liquid type matches the loaded liquid type, and unloading is performed as necessary. l'1. ．． It is also possible to perform command functions etc. in 1. Of course, the present invention is not limited to these examples, and it goes without saying that if the first stage of control is provided with various 7111 specific functions and operation command functions in advance, the operation commands can be issued accordingly.

In the above embodiment, a tank truck having three chambers for transporting three types of liquids was described as an example, but if one chamber or more is used,
It has two tank chambers and can be applied to all cases where one or more types of liquids are handled.

〔Effect of the invention〕

As described in the embodiment, a liquid type identification sensor is provided in each tank chamber, and the sensor is brought into contact with or immersed in the liquid loaded on the fl'j, and the liquid type is determined using a light reflectance meter. In addition to making it possible to directly determine the frequency, predetermined actions such as displaying the liquid type can be commanded based on the multiplication frequency, making it possible to accurately detect the type of loaded liquid and to prevent operator misunderstandings and incorrect operations. 2. Confusion of unloading liquid types due to throats can be avoided as much as possible. In addition, since the transfer of electricity is eliminated in the detection, there is no possibility that flammable liquids will ignite due to sparks or electrical leakage, and the safety of liquid unloading operations can be ensured.

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[Brief explanation of the drawing]

Figure 1 is a schematic diagram of a tank truck having multiple tank chambers to which the present invention is applied, Figure 2 is an example of a liquid type identification sensor, and is an explanatory diagram of the state of liquid type detection in the tank chamber, and Figure 3 is an illustration of a liquid type identification sensor. This is an example of a display panel in which lamps for displaying seeds are arranged. 1-Tank room, 3-Vehicle, 4-Light emitting source, 5-Light receiving sensor, 6-Optical cable, 7-? i species identification senna, 9-liquid;
10-Control means. Patent applicant Kyokuto Kaihatsu Kogyo Co., Ltd. (and 2 others) Agent Patent attorney Katsutoshi Yoshiso (1 idiot) 1 Continued from page 1 0 Inventor Norio Sugiyama Kouchi, Kawasaki-ku, Kawasaki City 0 Inventor Akira Sasano Naonari Kouchi, Kawasaki-ku, Kawasaki City0 Inventor Kei Sakamoto - Kouchi, Kawasaki-ku, Kawasaki City

Claims (1)

[Claims] (1) A light emitting source, a light receiving sensor, and an optical cable that transmits light between these are attached to a vehicle, and if the optical cable comes into contact with, drowns in, or is immersed in liquid loaded in a tank chamber, the light from the light emitting source is emitted. A liquid type 8 [& another sensor is installed, and a loaded liquid type signal from the light receiving sensor is inputted to a control means that commands a predetermined operation. A device for detecting the type of liquid loaded in a tank, characterized in that it is configured as follows.