KR20110035232A

KR20110035232A - Oil leakage sensing apparatus of oil tank

Info

Publication number: KR20110035232A
Application number: KR1020090092859A
Authority: KR
Inventors: 유홍근
Original assignee: (주)유민에쓰티
Priority date: 2009-09-30
Filing date: 2009-09-30
Publication date: 2011-04-06

Abstract

PURPOSE: A device for sensing the oil leakage of an oil tank is provided to rapidly treat an oil leak by simply attaching an oil leak detection sensor on the outer surface of an oil tank. CONSTITUTION: A device for sensing the oil leakage of an oil tank comprises an oil leak detection sensor(300). The oil leak detection sensor is formed in a tape shape. The oil leak detection sensor is installed on the outer surface or the bottom surface of an oil tank. The oil leak detection sensor comprises a base film layer, a conductive line(330), a conductive polymer line, and an upper protection film layer(350). The base film layer is formed in a tape shape. The conductive line is printed on the top surface of the base film layer in a longitudinal direction. The polymer line is attached on the top surface of the base film layer in a line with the conductive line. The upper protection film layer is attached on the top surface of the base film layer.

Description

Oil leakage sensing apparatus of oil tank

The present invention relates to an oil leak detection device of an oil tank, and in particular, oil leakage is generated by detecting a leaked oil by attaching a oil leak detection sensor made of a tape to the outside of a vehicle fuel tank, an oil storage tank, an oil storage tank, and the like. The present invention relates to an oil leak detection device of an oil tank so that a simple and accurate judgment can be made.

If leakage occurs due to corrosion or external impact in the fuel tank of the vehicle while driving, the driver can not immediately identify the leakage, and such leakage is the biggest factor of soil pollution and waste of expensive oil. .

In addition, there is a great risk of a vehicle fire, so the driver should always be careful.

Even oil storage tanks have the same problem, and the biggest problem is industrial storage tanks.

Unlike oil leaks for vehicles, such industrial oil storage tanks have the risk of generating large amounts of oil leaks, so they have serious problems such as large fires, soil pollution and water pollution in a wide range of areas. It is true.

In the case of a vehicle, there is no particular method for checking leakage, and in the case of an industrial oil storage tank, a situation of leakage is detected by various complicated and expensive sensing equipment.

An object of the present invention has been proposed to improve the problems in the prior art as described above, it is formed in a tape method is attached to the outside of the oil tank to detect the leakage immediately when the oil leakage is easy to install easily In addition, the present invention provides a leak detection system for an oil tank that enables a leak detection at a relatively low price.

According to a preferred embodiment of the present invention for achieving the above object,

A tape type oil leak sensor is installed on the outer side or bottom side of the oil tank,

The oil leak sensor

A base film layer in tape form;

Conductive lines printed in a longitudinal direction on an upper surface of the base film layer;

A conductive polymer line attached side by side to the conductive line at an upper surface of the base plume layer;

It is attached to the upper surface of the base film layer, a plurality of holes at a predetermined interval in the longitudinal direction; the upper protective film layer formed at the position where the conductive line is printed; consists of.

As described above, according to the oil leakage detection device of the oil tank according to the present invention, by simply installing in a manner that is attached to the outside of the oil tank that can be manufactured at a relatively low price by immediately confirming this when the oil leakage occurs alarms So that quick response can be achieved.

Due to this, not only does not waste oil due to leakage, but also has the effect of preventing fire, soil or water pollution.

Hereinafter, an oil leakage detecting apparatus of an oil tank according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a state in which an oil leakage detecting apparatus according to a first embodiment of the present invention is applied to an oil tank, and oil leakage outside an oil tank 100 such as a fuel tank of an automobile, an oil storage tank of oil, an industrial oil storage tank, and the like. The detection device is installed, where the oil leakage detection device may be installed only on the side and bottom, or the bottom of the oil tank 100, Figure 1 shows the state installed on the side and the bottom.

The oil leakage detecting device is composed of an oil absorption material 200, an oil leakage sensor 300, and a coating layer 400. The oil absorption material 200 is widely installed to cover the sides and the bottom of the oil tank 100, and is installed nonwoven fabric. , Cotton, cloth and the like to absorb and diffuse the oil leaked from the oil tank 100 so that the oil leak sensor 300 can easily detect.

When the oil absorbent 200 is installed only at the lower side, when leakage occurs from the side of the oil tank 100, the oil flows downwardly along the side of the oil tank 100 and soaks into the oil absorbent 200 and spreads.

The oil leakage sensor 300 is installed on the outside of the oil absorption member 200 to detect the oil absorbed and diffused to generate a detection signal for the controller. Such an oil leakage sensor 300 is formed in a flat tape shape. It is installed to be wound on the outer side of the 200, that is, the side and the bottom.

On the outside of the oil leak sensor 300, the oil absorbing material 200 and the oil leak sensor 300 are formed with a coating film 400 coated with a coating film or a coating material such that the oil absorbing material 200 and the oil leak sensor 300 are not exposed to external pollutants, that is, oil, water, and dust. In this case, the coating layer 400 is formed such that the oil absorbent 200 and the oil leakage sensor 300 are hermetically sealed to the outside.

Figure 2 is a cross-sectional view showing a state in which the oil leakage detecting apparatus according to the second embodiment of the present invention is applied to the oil tank, the outer cover 500 of the metal or plastic material is installed to the outside of the oil leakage sensor 300 to be sealed to the outside. In this case, the outer cover 500 is to prevent the exposure of the pollutants, and also to prevent the oil tank 100 and the oil leak sensor 300 from being damaged by a boulder or a piece of metal while driving, such as an automobile fuel tank.

At this time, the outer cover 500 is installed to completely surround the side and the bottom of the fuel tank 100 to completely seal the oil absorbing material 200 and the oil leakage sensor 300 with the outside.

3 is a view showing the first form of the oil leakage sensor 300 mentioned above, the lower protective film layer 320, the base layer 340, the upper protective film layer is printed on the lower surface of the conductive line 330 350 is sequentially stacked from the bottom to the top.

In addition, the upper protective film layer 350 has holes 351 formed at predetermined intervals.

The lower protective film layer 320 is a layer for protecting the lower surface of the base layer 340, and is formed of a film such as PET, PE, PTFE, PVC, conductive lines printed on the lower surface of the base layer 340 330 is for protection.

The base layer 340 is a layer on which the conductive line 330 is printed on the bottom surface, and is formed as a porous polymer to absorb and expand oil, and the porous polymer is a conductive line 330 printed on the bottom surface. ) Is insulated.

The conductive line 330 is printed on the bottom surface of the base layer 340 by a printing method, which is printed in at least one line along the longitudinal direction of the base layer 340, the conductive line 330 is conductive It is printed by a silver compound or pure conductor ink having 0 to 20?

The upper protective film layer 350 is formed of a film such as PET, PE, PTFE, PVC and the like to protect the upper surface of the base layer 340, like the lower protective film layer 320, the conductive line 330 In the formed position, a plurality of holes 351 are formed at regular intervals along its longitudinal direction.

The hole 351 is formed to have a long groove, a circular groove, or other shape, the interval between the holes 351 is preferably formed to have a gap of 0.5 ~ 1.5cm.

FIG. 4 is a perspective view showing the oil leakage sensor 300 in the form of a tape disassembled for each layer. The conductive line 330 is printed on the lower surface of the base layer 340 along the longitudinal direction. ) May be formed in one or more lines.

In addition, the upper protective film layer 350 is formed with a plurality of holes 351 at regular intervals in the longitudinal direction, as shown in Figure 5 holes 351 at the same position as the printed position of the conductive line 330 as possible. Is preferably formed.

Therefore, the laminated layers are bonded by thermocompression bonding or ultrasonic welding, or an adhesive. In this case, it is preferable to bond the portions excluding the holes 351 and the conductive lines 330.

The base layer 340 detects the occurrence of leakage by changing the resistance of the conductive line 330 in response to oil such as hydrocarbon liquid, and the sour protective film layer 350 faces the oil tank 100. It is installed to see is to sense the oil absorbed from the absorbent 200.

6 is a view illustrating a process of changing the oil leakage sensor 300 when the oil leakage occurs to detect it. When oil 210 is leaked and diffused in the upper protective film layer 350 as shown in (a), The oil 210 flows into the base layer 340 through the hole 351.

The base layer 340 is formed by the porous polymer to absorb the oil 210, and the expansion gradually occurs as shown in (b) by the absorption of the oil, thereby causing the conductive line 320 printed on the rear surface of the base layer 340 to be absorbed. The volume gradually increases.

In this case, minute cracks 331 are generated in the conductive line 330 which gradually increases in volume, thereby increasing resistance per unit area, and reaching a limit point, cracks due to non-conductive liquid of the conductive line 330. The 33331 is completely spaced apart and broken, or the non-conductive liquid hinders the flow of electricity, resulting in a significant increase in the resistance value.

Therefore, by detecting the increase in the resistance of the conductive line 330 it is to detect whether or not leakage occurs.

To this end, the controller configured as shown in FIG. 7 generates an alarm according to whether leakage occurs. The processor 960 controls the power supply unit 620 so that a voltage of several V is supplied to the conductive line 330. It is determined whether leakage is received by inputting a voltage value through 330. When a voltage drop occurs, the resistance value of the conductive line 330 is increased, so it is determined as leakage.

At this time, since the drop of the voltage input to the processor 610 according to the length of the leakage sensor 300 is inevitably generated, the set value is stored in the voltage drop value that can occur according to the installed length of the leakage sensor 300 If the voltage drop value detected from the conductive line 330 is larger than the set voltage drop value, the alarm generation signal is output to the display unit 640 and the warning sound generator 650. By doing so, the manager is notified of the occurrence of leakage.

FIG. 8 is a view showing a second form of the oil leak sensor 300, in which a conductive polymer is used instead of the porous polymer of the first form.

First, the conductive line 342 is printed on the base film layer 341 formed of a film such as PET, PE, PTFE, PVC, or the like by a silver compound or a pure conductor ink having 0 to 20Ω in the longitudinal direction. The conductive polymer line 343 is attached to the conductive line 342 while being spaced apart from the conductive line 342 by a predetermined distance.

That is, the entire base film layer 341 is not composed of the porous polymer as in the first embodiment, but the conductive polymer is placed only at the position where the oil of the base film layer 341 is dropped, thereby reducing the cost. .

The conductive polymer line 343 detects the occurrence of leakage by changing the resistance value in response to an oil such as a hydrocarbon liquid.

The conductive polymer line 343 may be attached to the base film layer 341 by various methods such as adhesive, ultrasonic welding, and thermocompression. The upper protective film layer may be formed on the base film layer 341. When 350 is attached, it is possible to attach in the same manner as described above.

An upper protective film layer 350 is positioned above the base film layer 341. A plurality of holes 351 are formed in the upper protective film layer 350 at predetermined intervals, and the conductive polymer line A hole 351 is formed at the same position as the attached position of 343.

In addition, the laminated base film layer 341 and the upper protective film layer 350 is bonded by thermocompression bonding or ultrasonic welding, or an adhesive. At this time, the hole 351 and the conductive line 342 and the conductive polymer line ( 343) are bonded.

Therefore, when oil flows through the hole 351 of the upper protective film layer 350, the resistance value is increased due to the porosity of the conductive polymer line 343.

Therefore, the resistance change value is read by the controller as shown in FIG. 7 to determine whether leakage occurs, and the overall operation is the same as in the first form.

The oil leakage sensor 300 is installed to be wound while maintaining a constant interval in a spiral form at the side of the oil tank 100, the lower portion is wound while maintaining a constant interval in a zigzag form as shown in Figure 9 spread from the oil absorber 200 It is possible to detect leaked oil.

1 is a cross-sectional view according to a first embodiment of the present invention.

2 is a cross-sectional view according to a second embodiment of the present invention.

Figure 3 is a cross-sectional view of the oil leak sensor applied in the present invention.

Figure 4 is a perspective view showing the oil leakage sensor disassembled for each floor.

Fig. 5 shows the positional relationship between conductive lines and holes.

6 is a view showing a process in which the leakage sensor when the leakage occurs to change to detect it.

7 is an internal circuit block diagram of the controller.

8 is a view showing another form of the leak sensor.

100: oil tank 200: oil absorption material

210: oil leakage 300: oil leakage sensor

320: lower protective film layer 330: conductive line

340: base layer 350: upper protective film layer

351: hole 400: coating layer

500: outer cover

Claims

The oil leak sensor

A base film layer in tape form;

And an upper protective film layer attached to an upper surface of the base film layer and having a plurality of holes at a predetermined interval in a longitudinal direction at a position where conductive lines are printed.

The oil leakage detecting apparatus of claim 1, wherein an oil absorption material is provided between an outer side of the oil tank and an oil leakage sensor.

The oil leakage sensor of claim 1, wherein a coating layer or an outer cover is further provided outside the oil leakage sensor to prevent the oil leakage sensor and the oil absorbent from external contamination.

The apparatus of claim 1, further comprising: a power supply unit supplying power to the conductive line;

A processor that reads the detected voltage value from the conductive line and compares the detected voltage value with a voltage value stored in a set value storage unit to determine whether an alarm occurs;

And a controller configured to generate a warning display and a warning sound by the control of the processor. The oil leakage detecting apparatus of the oil tank further comprising a controller.

The oil leak sensor

A base layer formed into a flat tape by a porous polymer;

Conductive lines printed along a longitudinal direction on a lower surface of the base layer;

A lower protective film layer to which the conductive line is attached to protect the lower surface of the printed base layer;

And an upper protective film layer attached to an upper surface of the base layer and formed at a position where conductive lines having a plurality of holes are printed at predetermined intervals in a longitudinal direction are printed.

[6] The oil leakage detecting apparatus of claim 5, wherein an oil absorption material is provided between the outside of the oil tank and the oil leakage sensor.

The oil leakage detection apparatus of claim 5, wherein a coating layer or an outer cover is further provided outside the oil leakage sensor to prevent the oil leakage sensor and the oil absorbent from external contamination.

The apparatus of claim 5, further comprising: a power supply unit supplying power to the conductive line;