KR20240039325A - Leak detection device in hydrogen fuel tank or supply part - Google Patents

Abstract

The present invention relates to a leak detection device for a hydrogen fuel tank or supply unit, and more specifically, to a hydrogen fuel tank or supply unit that can detect gaseous fuel leaked from a storage tank storing gaseous fuel such as hydrogen and gas and respond quickly. It relates to a leak detection device.

Description

Leak detection device in hydrogen fuel tank or supply part}

The present invention relates to a leak detection device for a hydrogen fuel tank or supply unit, and more specifically, to a hydrogen fuel tank or supply unit that can detect gaseous fuel leaked from a storage tank storing gaseous fuel such as hydrogen and gas and respond quickly. It relates to a leak detection device.

In general, storage tanks are used for transport and storage of liquids such as oil, chemicals, and gases such as hydrogen and gas.

These storage tanks are designed to detect leaked fuel and flammable/toxic gases generated inside in real time.

At this time, a “leak detection type double oil tank” has been proposed as a conventional technology for detecting fuel such as gas leaking to the outside of the storage tank.

The prior art is a double jacket formed on the outside of the oil tank, and it detects leakage of dangerous substances such as oil into the sensing layer (inner space) of the double jacket due to damage to the tank or groundwater infiltrating the sensing layer due to damage to the double jacket. This is done so that an alarm can be issued.

For this purpose, when pressure fluctuations in the sensing layer are detected, the contact pressure gauge installed in the control box operates so that the manager can recognize the abnormal condition.

However, in the prior art, as air pressure is injected into the internal space and detection is performed through pressure fluctuations, there is a problem that when pressure fluctuations occur due to various requirements other than leakage, the leakage state may be detected and false detection may occur.

In addition, as the air pressure in the internal space must always be maintained within a certain pressure, there is a problem in which managers need periodic maintenance to maintain the internal air pressure at a constant pressure.

Also, as the pressure changes due to cracks or impacts in either the oil tank or the double jacket, it is difficult to quickly confirm whether an actual leak has occurred or a problem with the double jacket has occurred.

Republic of Korea Registered Utility Model No. 20-0269552 (2020.03.12.)

The present invention was made to solve the above problems, and the purpose of the present invention is to provide a leak detection device in a hydrogen fuel tank or supply section that can quickly detect and warn of a leak in the event of a leak of stored hydrogen. there is.

Another object of the present invention is to provide a leak detection device in a hydrogen fuel tank or supply section that can efficiently detect a small amount of leaked hydrogen by directing leaked hydrogen to an efficient location using the floating property of hydrogen. .

Another object of the present invention is to provide a leak detection device for a hydrogen fuel tank or supply unit that prevents leaked hydrogen from scattering to the outside and can easily collect leaked hydrogen and detect leaks.

Another object of the present invention is to minimize contact between the case and hydrogen by guiding the leaked hydrogen to the top by a liquid such as water, thereby preventing cracks, damage, and breakage of the case by hydrogen, and The purpose is to provide a leak detection device in a hydrogen fuel tank or supply section that prevents accidents such as hydrogen sparks, fire, or explosion.

Another object of the present invention is to provide a leak detection device for a hydrogen fuel tank or supply unit that can prevent the generation of bubbles and sloshing of stored water when shaking occurs due to movement, impact, etc.

The present invention for achieving the above-described object consists of a storage tank that stores hydrogen fuel through a supply unit that supplies and discharges hydrogen fuel, and a detection means installed on the upper part of the storage tank to detect leaked hydrogen. It is characterized by

The sensing means is preferably composed of an image sensor, an infrared sensor, and an ultrasonic sensor singly or in combination.

It is disposed at the top of the storage tank, collects leaked hydrogen gas, and is disposed perpendicular to the upper surface of the collection section, and hydrogen gas leaked through the detection means while discharging the hydrogen gas induced in the case portion. It is preferable that it consists of a guide tube that senses.

The upper surface of the collection unit is preferably formed with an inclined surface that induces hydrogen through an upward slope from the outer circumference toward the guide tube.

It is preferable that a ventilation part installed at the top of the guide tube to discharge leaked hydrogen to the outside is further included.

Preferably, it is installed at the top of the guide tube and further includes an opening and closing part that opens and closes the guide tube when leaked hydrogen is detected through the detection means.

A case portion in which the storage tank is disposed, stores fluid and guides hydrogen bubbles leaking from the storage tank upward, and a guide pipe disposed vertically on the upper surface of the case portion and discharging the leaked hydrogen bubbles; It is disposed on the outer surface of the guide tube in the form of a double pipe, and consists of an expansion tube on which the detection means for detecting hydrogen bubbles leaking from the storage tank is disposed, and the expansion tube is located at a position for measuring hydrogen through the detection means. It is desirable that a transparent or translucent window be visible through which bubbles can be identified.

The upper surface of the case portion is preferably formed with an inclined surface that induces hydrogen through an upward slope from the outer circumference toward the guide tube.

It is preferable that a ventilation part installed at the top of the expansion pipe to discharge leaked hydrogen to the outside is further included.

It is preferable that the upper end of the expansion tube further includes a prevention part in which a plurality of vertical plates are arranged at regular intervals to prevent the generation of bubbles and sloshing that may be caused by shaking of the case part.

Preferably, it is installed at the top of the expansion tube and further includes an opening and closing part that opens and closes the expansion tube when leaked hydrogen is detected through the detection means.

The opening and closing part is coupled to the upper surface of the guide tube or the expansion tube, and has a coupling part formed with a discharge groove for discharging hydrogen through a donut shape with an open interior, and is fastened to the coupling part to open and close the discharge groove. An opening and closing plate, an accommodating part that accommodates the opening and closing plate on the outer peripheral surface of the coupling part and opens the opening and closing plate by elasticity, and the opening and closing plate accommodated in the accommodating part through electromagnets respectively installed in the coupling part and the opening and closing plate. It is preferable to include a connecting member that closes and a control unit that opens and closes the opening and closing plate by operating the connecting member when leaked hydrogen is detected through the sensing means.

According to the leak detection device of the hydrogen fuel tank or supply unit according to the present invention, there is an effect of quickly detecting the leak and issuing a warning when stored hydrogen leaks through the detection means.

According to the present invention, there is an advantage that even a small amount of hydrogen can be quickly inspected at an efficient location by using the floating property of hydrogen.

According to the present invention, the case part is formed outside the storage tank to prevent leaked hydrogen from scattering to the outside, and there is an advantage in that the leaked hydrogen can be efficiently guided to inspect for leaks and easily collected.

According to the present invention, there is an effect of storing liquid and gas such as water and air in the case part to induce and collect hydrogen.

According to the present invention, by storing water in the case part, workers can easily check it with the naked eye through bubbles generated when hydrogen leaks, and by preventing liquid from coming into contact with the case part, hydrogen can cause cracks, damage, and damage to the case part. It has the advantage of preventing damage.

According to the present invention, there is an advantage in preventing accidents such as sparks, ignition, and explosion by preventing hydrogen leaked by liquid from coming into contact with external air.

According to the present invention, there is an effect of preventing accidents by selectively discharging hydrogen leaked through the opening and closing part to the outside of the case part.

1 is a conceptual diagram showing a leak detection device for a hydrogen fuel tank or supply unit according to a first embodiment of the present invention;
Figure 2 is a conceptual diagram showing a leak detection device for a hydrogen fuel tank or supply unit according to a second embodiment of the present invention;
Figure 3 is a conceptual diagram showing a collection unit according to the present invention;
4 is a conceptual diagram showing a guide plate according to the present invention;
5 is a cross-sectional view showing an opening and closing unit according to the present invention;
Figure 6 is an operational diagram showing a detection state according to a second embodiment of the present invention;
Figure 7 is a conceptual diagram showing a leak detection device in a hydrogen fuel tank or supply unit according to a third embodiment of the present invention;
8 is a conceptual diagram showing a soundproofing unit according to the present invention;
Figure 9 is an operational diagram showing a detection state according to a third embodiment of the present invention.

Hereinafter, the leak detection device for a hydrogen fuel tank or supply unit according to the present invention will be described in detail along with the attached drawings.

Figure 1 is a conceptual diagram showing a leak detection device for a hydrogen fuel tank or supply unit according to a first embodiment of the present invention.

As shown in Figure 1, the present invention relates to a leak detection device for a hydrogen fuel tank or supply unit, and more specifically, to detect gaseous fuel leaked from a storage tank storing gaseous fuel such as hydrogen and gas and respond quickly. It relates to a leak detection device for a hydrogen fuel tank or supply unit (11).

To this end, the present invention consists of a storage tank 10 and a detection means 20 to detect leaks of stored hydrogen fuel.

The storage tank 10 stores hydrogen fuel through a supply unit 11 that supplies and discharges hydrogen fuel.

The detection means 20 is installed at the top of the storage tank 10 and detects leaked hydrogen.

At this time, the sensing means 20 consists of an image sensor 21, an infrared sensor 22, and an ultrasonic sensor 23.

In this way, the hydrogen leaked from the storage tank 10 can be quickly inspected for leakage through the detection means 20.

If we look at each of these configurations in detail, they are as follows.

First, the storage tank 10 is configured in a typical form to store hydrogen fuel.

It is desirable to install the storage tank 10 in various ways such as on ships, underground, or on the ground to store a large amount of fuel and then supply it according to the intended use.

In addition, the supply part 11 is formed at the top or side of the storage tank 10 so that hydrogen fuel can be supplied or discharged from the outside.

Therefore, the supply unit 11 has a typical configuration formed in the storage tank 10.

Here, the supply unit 11 includes pipes and lines that transport hydrogen to supply and discharge from the storage tank 10, valves that open and close them, connection points of each line, and various other locations where hydrogen leakage occurs. Can be used in any location.

That is, the supply unit 11 includes various installed components that transport hydrogen for use and storage.

In addition, the storage tank 10 is formed in a form suitable for storing hydrogen fuel, but can also store gaseous fuels such as gas in addition to hydrogen fuel.

Next, the detection state through the detection means 20 will be explained.

Therefore, the detection means 20 detects leakage by installing the image sensor 21, the infrared sensor 22, and the ultrasonic sensor 23 singly or in combination.

That is, the detection means 20 consists of a conventional image sensor, an infrared sensor, and an ultrasonic sensor capable of detecting hydrogen.

In addition, the detection means 20 may use various sensors capable of detecting hydrogen in addition to the image sensor 21, the infrared sensor 22, and the ultrasonic sensor 23.

The detection means 20 is installed at the top of the storage tank 10 in line with the fact that the hydrogen stored in the storage tank 10 is lighter than air and floats when leaked to the outside.

Through this, the hydrogen leaked from the storage tank 10 floats and the leak can be detected through the detection means 20.

In addition, the detection means 20 is installed at the upper part of the storage tank 10 according to the type of fuel stored in the storage tank 10, so that it floats when lighter than air, and sinks when heavier than air. It is desirable to install it at the lower part of the storage tank 10 accordingly.

Additionally, it can be installed at the top and bottom of the storage tank 10, respectively.

Next, the detection state according to the present invention will be described.

First, the sensing means 20 is installed at the top adjacent to the storage tank 10.

Therefore, hydrogen leaked to the outside due to cracks, gaps, etc. in the storage tank 10 is mixed in the air and floats.

At this time, leakage can be detected by detecting hydrogen through the detection means 20.

In addition to the storage tank 10, hydrogen leaking from locations where hydrogen stored in lines such as pipes and valves that supply hydrogen fuel is stored and moved can be detected.

That is, the detection means 20 can be installed to detect whether the hydrogen stored in the storage tank 10 is leaking and whether the supply unit 11 that supplies and transports the hydrogen is leaking.

Figure 2 is a conceptual diagram showing a leak detection device for a hydrogen fuel tank or supply unit according to a second embodiment of the present invention, Figure 3 is a conceptual diagram showing a collection unit according to the present invention, and Figure 4 is a guide plate according to the present invention. It is a conceptual diagram showing, Figure 5 is a cross-sectional view showing an opening and closing unit according to the present invention, and Figure 6 is an operational diagram showing a sensing state according to the second embodiment of the present invention.

As shown in FIGS. 2 to 6, the second embodiment includes the first embodiment, but further includes a collection unit 30 and a guide pipe 40 for collecting gas leaked from the top of the hydrogen tank. .

The collection unit 30 is disposed at the top of the storage tank 10 and collects leaked hydrogen gas.

The collection unit 30 is formed at the top of the storage tank 10 with an area larger than the storage tank 10 to collect leaked hydrogen gas.

In addition, the collection unit 30 is provided with a separate support means and is supported on the storage tank 10 and the ground so as to be located at the top of the storage tank 10.

In addition, the collection unit 30 is placed on the top of the storage tank 10, or is formed in various forms to surround the storage tank 10 and isolate it from the outside to collect leaked hydrogen gas.

The guide tube 40 is disposed vertically on the upper surface of the collection unit 30, and detects hydrogen through the detection means 20 while discharging the hydrogen gas induced in the collection unit 30.

Accordingly, the hydrogen gas leaking from the storage tank 10 rises and is collected by the collection unit 30, and the collected hydrogen gas flows into the guide pipe 40.

At this time, the leaked hydrogen gas is detected through the detection means 20 installed on the guide pipe 40.

If we look at each configuration in detail, it is as follows.

First, the collection unit 30 has a larger area than the storage tank 10 and is disposed at the top of the storage tank 10 to collect leaked hydrogen gas and guide it to the guide pipe 40.

This collection unit 30 is formed with an inclined surface 32 that guides hydrogen through an upward slope toward the guide tube 40 around its outer surface, so that hydrogen leaked from the storage tank 10 rises and rises through the guide tube. This is done so that you can move to (40).

Therefore, hydrogen in contact with the upper surface of the collection unit 30 flows into the guide tube 40 along the inclined surface 32 using its floating property.

And a guide plate 33 is formed on the inclined surface 32 to quickly guide the leaked hydrogen gas to the guide pipe 40.

A plurality of such guide plates 33 are arranged at regular intervals on the center line of the guide pipe 40 toward the outer surface of the inclined surface 32.

At this time, the guide plate 33 is formed with an inner width adjacent to the guide tube 40 that is narrower than the width of one side located on the outer surface of the inclined surface 32.

In addition, on the protruding surface of the guide plate 33, fillets are formed on both sides of one side so that hydrogen can easily flow in and move between the guide plates 33 and the guide plate 33.

Through this, the hydrogen gas leaked from the storage tank 10 rises and comes into contact with the inclined surface 32, and easily flows between the guide plate 33 and the guide plate 33 through the fillet.

In this way, the hydrogen gas flowing between the guide plate 33 and the guide plate 33 moves along the inclined surface 32 through the floating property, and is limited to the gap between the guide plate 33 and the guide plate 33. This allows it to quickly move to the guide tube (40).

Next, the guide tube 40 is placed vertically at the top of the collection unit 30 to discharge leaked hydrogen to the outside of the collection unit 30.

The sensing means 20 is installed in the guide tube 40.

In addition, the guide tube 40 preferably protrudes upward from the upper center portion of the collection unit 30.

Through this, the guide tube 40 can detect leakage of hydrogen gas through the detection means 20 while discharging the hydrogen gas introduced from the collection unit 30.

Through this, the hydrogen leaked from the storage tank 10 is lighter than air and is discharged through the guide pipe 40 while floating.

Here, the collection unit 30 is exposed to the atmosphere and comes into contact with air, but if it is isolated in a separate compartment or the collection unit 30, the oxygen content is reduced, or it is denser than hydrogen, and may cause ignition, explosion, etc. It is made so that it can come into contact with various gases, such as quality, which can prevent accidents.

Accordingly, various gases can be used to prevent accidents caused by hydrogen, accurately identify leaks, and move quickly due to density.

That is, since hydrogen has a high risk of explosion when ignited when mixed with oxygen, there is a risk of explosion due to sparks, etc. when hydrogen and oxygen are mixed by contacting the collection unit 30 and the guide tube 40 with gases other than oxygen. can be reduced.

In addition, the guide pipe 40 can be connected to a separate pipe from the outside to collect leaked hydrogen and treat it separately.

Additionally, a ventilation unit 60 installed at the top of the guide tube 40 to discharge leaked hydrogen gas to the outside is further included.

The ventilation unit 60 is installed at the top of the guide pipe 40 to generate exhaust hydrogen gas flowing into the guide pipe 40 and quickly discharge it to the outside of the guide pipe 40.

Next, the detection state according to the present invention will be described.

First, the storage tank 10 is installed inside the collection unit 30 equipped with the guide pipe 40.

In this installed state, if hydrogen leaks from the storage tank 10, the leaked hydrogen gas is floated by the gas stored in the collection unit 30.

The hydrogen gas that rises in this way is guided to the guide pipe 40 through the inclined surface 32, and the guide pipe 40 discharges the introduced hydrogen gas to the outside.

At this time, exposure to hydrogen gas can be determined through the detection means 20 installed on the guide tube 40.

Accordingly, when hydrogen leaks from the storage tank 10, it is possible to quickly determine whether there is a leak, and accidents can be prevented using gases other than oxygen.

In addition, a pipe, etc. may be connected to the upper end of the guide pipe 40 so that the leaked hydrogen gas can be treated externally or separately.

Through this, hydrogen gas leaked from the storage tank 10 can be collected and leaks can be quickly detected, and accidents caused by hydrogen gas can be prevented.

In addition, leaked hydrogen gas can be discharged separately for storage and disposal, preventing accidents caused by leaked hydrogen.

In this way, hydrogen gas leaking from the storage tank 10 into the atmosphere is naturally induced and collected, and leaks can be detected in real time and quickly responded to, and the leaked hydrogen gas can be moved separately and used stably.

In addition, the collection unit 30 can be installed to detect hydrogen at locations such as pipes and line valves other than the storage tank 10.

Figure 7 is a conceptual diagram showing a leak detection device for a hydrogen fuel tank or supply unit according to a third embodiment of the present invention, Figure 8 is a conceptual diagram showing a soundproofing unit according to the present invention, and Figure 9 is a conceptual diagram showing a third embodiment of the present invention. This is an operation diagram showing the detection state according to an example.

As shown in FIGS. 7 and 8, the third embodiment includes the first embodiment, but the storage tank is built in, and a case portion 31 and a guide pipe 40 are provided to discharge and detect leaked hydrogen. ) and an expansion tube (50).

The case portion 31 has the storage tank 10 disposed therein, stores fluid, and guides hydrogen bubbles leaking from the storage tank 10 to the top.

The guide tube 40 is disposed vertically on the upper surface of the case portion 31 to discharge leaked hydrogen bubbles.

The expansion pipe 5 is disposed in a double pipe shape on the outer surface of the guide pipe 40, and the detection means 20 for detecting hydrogen bubbles leaking from the storage tank is disposed.

That is, the case portion 31 is isolated from the outside with the storage tank 10 disposed inside, and forms an internal space through a certain space gap with the hydrogen tank, where liquid such as water is stored.

At this time, an inclined surface 32 and a guide plate 33 are formed on the upper surface of the case portion 31.

The inclined surface 32 and the guide plate 33 have the same configuration as those described in the second embodiment.

In addition, the guide tube 40 protrudes to the upper part of the case portion 31 and discharges the collected hydrogen bubbles.

In addition, a visibility window 51 through which bubbles can be confirmed through transparency or translucency is formed in the expansion tube 50 at a position where hydrogen is measured through the detection means 20.

That is, the guide pipe 40 protrudes from the top of the case portion 31 at short intervals.

In this way, the expansion pipe 50 is installed on the outer peripheral surface of the guide pipe 40 protruding upward from the case portion 31.

At this time, the guide tube 40 and the expansion tube 50 are made of a double tube, and the expansion tube 5 is formed with a larger diameter than the guide tube 40.

And the detection means 20 further includes the ultrasonic sensor 23 along with the image sensor 21 and the infrared sensor 22 that are coupled to the expansion tube 50 and detect leaked hydrogen bubbles.

And the detection means 20 can be installed in combination with the image sensor 21, the infrared sensor 22, and the ultrasonic sensor 23, and the ultrasonic sensor 23 is connected to the image sensor 21 and It is desirable to place it on top of the infrared sensor 22.

In addition, water is stored in the case portion 31, the guide tube 40, and the expansion tube 50, and hydrogen bubbles rising from the water can be visually confirmed through the visibility window 51.

Through this, the hydrogen bubbles leaking from the storage tank 10 float through the expansion pipe 50 and are discharged to the outside, but the leak is quickly detected through the detection means 20 and the operator can detect the leak through the visualization window 51. ), you can check the bubbles with the naked eye.

In addition, the ventilation part 60 is selectively formed in the expansion pipe 50 to generate a flow of hydrogen so that the rising hydrogen can be quickly discharged, and the prevention part 70 is formed to discharge hydrogen and shake the stored water. Prevents the creation of bubbles and sloshing.

That is, the prevention unit 70 includes a plurality of vertical plates disposed vertically at the top of the expansion tube 50 to prevent the generation of bubbles and sloshing that may be caused by shaking of the case unit 31 ( 71) are placed in large numbers at regular intervals.

Accordingly, it prevents the case portion 31 from being shaken in various environments such as impact or movement, thereby creating bubbles and sloshing in the stored liquid.

Additionally, shaking of water stored in the case portion 31 can be reduced.

Here, the ventilation unit 60 generates a flow of air to quickly move hydrogen rising from the liquid.

In addition, as the expansion tube 50 has a larger diameter than the guide tube 40, hydrogen flowing in from the case portion 31 passes through the guide tube 40 and the expansion tube 50. The rising speed increases.

That is, the case part 31 and the expansion tube 50 are formed to have a larger diameter than the guide tube 40, so that the rising water bubbles have a smaller diameter than the case part 31 and the expansion tube 50. As it passes through the guide tube 40, the pressure rises and the rising speed increases.

And the storage tank 10 further includes a level sensor 34 that measures the level of stored water.

The level sensor 34 measures the level of the liquid stored in the case portion 31 and detects whether the liquid is leaking.

That is, the level sensor 34 detects leakage of stored water due to cracks in the case portion 31, and can prevent accidents such as cracks and gaps in the case portion 31.

In addition to the storage tank 10, the case portion 31 can detect hydrogen by installing it in supply parts such as pipes, lines, and valves that supply and discharge hydrogen to the storage tank 10.

In addition, the supply unit is installed in various supply units installed to transport hydrogen in addition to the storage tank 10.

This makes it possible to detect leaks at the various supply points that transport and supply hydrogen.

Next, the detection state according to the present invention will be described.

First, the storage tank 10 is installed inside the case portion 31.

In addition, the guide tube 40 and the expansion tube 50 are installed at the top of the case part 31, and water is stored in the space between the case part 31 and the storage tank 10.

Here, the case part 31 contains various types of liquids that induce hydrogen, in addition to water, to the guide tube 40 and the expansion tube 50, and prevent accidents such as cracks and explosions in the case part 31. can be used.

In addition, metal components have the property of absorbing hydrogen, so when hydrogen comes into contact with a metal container, problems such as cracks, cracks, and damage occur. Liquids such as water are stored in the case portion 31 and stored in the storage tank ( The hydrogen discharged from 10) is made to float by buoyancy so as to minimize contact with the side of the case portion 31.

Through this, the case portion 31 prevents cracks and gold breakage caused by hydrogen, and allows hydrogen leaked from the storage tank 10 to quickly flow into the guide pipe 40 to quickly detect leaks. You can.

In this state, if hydrogen leaks from the storage tank 10, the leaked hydrogen bubbles are lifted by the liquid and guided to the guide pipe 40 through the inclined surface 32 and the guide plate 33. do.

Hydrogen bubbles introduced into the guide tube 40 flow into the expansion tube, and as they expand from a narrow space to a wide space, they quickly pass through the guide tube 40 and quickly flow into the expansion tube 50.

The hydrogen bubbles introduced in this way are detected through the detection means 20, and the rising hydrogen bubbles can be confirmed with the naked eye through the visibility window 51.

In addition, when the stored water is shaken due to movement, shaking, or vibration of the case part 31, the shaking of the water is stably controlled through the prevention part 70 to prevent bubbles and sloshing.

In this way, by storing the storage tank inside the liquid, leaked hydrogen bubbles can be easily identified with the naked eye in real time and the location of the leak can be easily identified for rapid response, and accidents can be prevented by preventing hydrogen bubbles from mixing with oxygen. there is.

And it is installed at the top of the guide tube 40 or the expansion tube 50 according to the second and third embodiments, and when leaked hydrogen is detected through the detection means 20, the guide tube (40) or an opening and closing part 80 that opens and closes the expansion tube 50 is further included.

The opening and closing part 80 includes a coupling part 81, an opening and closing plate 82, a receiving part 83, and a connecting member 84 to open and close the upper ends of the guide tube 40 and the expansion tube 50. ) and a control unit 85.

The coupling portion 81 is coupled to the upper surface of the guide tube 40 or the expansion tube 50, and a discharge groove 81a is formed to discharge hydrogen through a donut shape with an open interior.

Therefore, the coupling portion 81 is coupled to the upper end according to the diameter of the guide tube 40 and the expansion tube 50, and a discharge groove 81a open up and down is formed inside to discharge leaked hydrogen. do.

The opening and closing plate 82 is fastened to the coupling portion 81 to open and close the discharge groove (81a).

The receiving portion 83 accommodates the opening and closing plate 82 on the outer peripheral surface of the coupling portion 81 and opens the opening and closing plate 82 by elasticity.

That is, the opening and closing plate 82 is built into the receiving portion 83.

At this time, the receiving portion 83 maintains the opening/closing plate 82 in an open state through the discharge groove 81a due to its elasticity.

The connecting member 84 closes the opening and closing plate 82 accommodated in the receiving portion 83 through electromagnets installed in the coupling portion 81 and the opening and closing plate 82, respectively.

When the control unit 85 detects leaked hydrogen through the detection means 20, the control unit 85 operates the connecting member 84 to open and close the opening and closing plate 82.

That is, when hydrogen leakage is detected from the storage tank 10 through the commercial detection means 20, the control unit 85 turns on/off the connecting member 84 to open and close the opening and closing plate 82.

Here, the opening and closing plate 82 is accommodated inside the receiving portion 83 when the connecting member 84 is turned off to open the guide pipe 40 and the expansion pipe 50, and the connecting member 84 ) is turned on, the opening and closing plate 82 is pulled out from the receiving part 83 by an electromagnet and closes the guide tube 40 and the expansion tube 50.

And the control unit 85 opens and closes the guide tube 40 and the expansion tube 50 when hydrogen leaks according to the user's settings.

Accordingly, when a hydrogen leak is detected through the detection means 20, the control unit 85 opens the opening and closing plate 82 to discharge hydrogen to the outside, or opens the opening and closing plate 82 when a hydrogen leak is detected. Selective control is possible to prevent hydrogen from being discharged to the outside by closing it.

At this time, if a separate pipe is installed in the guide pipe 40 and the expansion pipe 50 to collect leaked hydrogen, the control unit 85 opens the opening and closing plate 82 to discharge hydrogen. If there is a risk of an explosion when hydrogen is discharged into the atmosphere because a separate pipe is not installed, the opening and closing plate (82) is closed to prevent hydrogen discharge, and if stable discharge is possible, the opening and closing plate (82) is opened. Thus, various controls are possible to discharge hydrogen.

As above, the rights of the present invention are not limited to the embodiments described above but are defined by the claims, and various modifications and modifications can be made by those skilled in the art within the scope of the rights set forth in the claims. It is self-evident that you can do this.

10: storage tank 11: supply unit
20: Sensing means 21: Image sensor 22: Infrared sensor
23: Ultrasonic sensor
30: collection part 31: case part 32: slope
33: Guide plate 34: Level sensor
40: Guide tube
50: expansion tube 51: visible window
60: Ventilation unit
70: Prevention part 71: Vertical plate
80: opening/closing part 81: coupling part 81a: discharge groove
82: opening/closing plate 83: receiving portion
84: connection member 85: control unit

Claims (11)

A storage tank (10) for storing hydrogen fuel through a supply unit (11) that supplies and discharges hydrogen fuel,
A hydrogen fuel tank or supply unit leak detection device, characterized in that it consists of a detection means (20) installed on the upper part of the storage tank (10) to detect leaked hydrogen. According to clause 1,
The detection means (20) is a hydrogen fuel tank or supply unit leak detection device, characterized in that it is composed of an image sensor (21), an infrared sensor (22), and an ultrasonic sensor (23) singly or in combination. According to clause 1,
A collection unit 30 disposed at the top of the storage tank 10 to collect leaked hydrogen gas,
It is disposed vertically on the upper surface of the collection unit 30 and consists of a guide tube 40 that detects hydrogen gas leaked through the detection means 20 while discharging hydrogen gas induced in the case unit 31. A leak detection device in a hydrogen fuel tank or supply unit, characterized in that. According to clause 3,
A leak detection device for a hydrogen fuel tank or supply unit, characterized in that the upper surface of the collection unit 30 is formed with an inclined surface 32 that guides hydrogen through an upward slope from the outer circumference toward the guide tube 40. . According to clause 3,
A hydrogen fuel tank or supply unit leak detection device, characterized in that it further includes a ventilation unit (60) installed at the top of the guide pipe (40) to discharge leaked hydrogen to the outside. According to clause 3,
A hydrogen fuel tank that is installed at the top of the guide tube 40 and further includes an opening and closing part 80 that opens and closes the guide tube 40 when leaked hydrogen is detected through the detection means 20. Or a leak detection device in the supply section. According to clause 1,
A case portion 31 in which the storage tank 10 is disposed, stores fluid, and guides hydrogen bubbles leaking from the storage tank 10 upward;
A guide pipe (40) disposed vertically on the upper surface of the case portion (31) to discharge leaked hydrogen bubbles,
It is arranged in the form of a double pipe on the outer surface of the guide pipe 40 and consists of an expansion pipe 50 on which the detection means 20 for detecting hydrogen bubbles leaking from the storage tank is disposed,
Leakage of a hydrogen fuel tank or supply unit, characterized in that a visible window 51 is formed in the expansion tube 50 at a position where hydrogen is measured through the detection means 20, through which bubbles can be confirmed through transparency or translucency. Sensing device. According to clause 7,
A leak detection device for a hydrogen fuel tank or supply unit, characterized in that the upper surface of the case portion 31 is formed with an inclined surface 32 that guides hydrogen through an upward slope toward the guide pipe 40 on the outer circumference. . According to clause 7,
A hydrogen fuel tank or supply unit leak detection device, characterized in that it further includes a ventilation unit (60) installed at the top of the expansion pipe (50) to discharge leaked hydrogen to the outside. According to clause 7,
At the top of the expansion tube 50, a plurality of vertical plates 71 are arranged at regular intervals to prevent the generation of bubbles and sloshing that may be caused by shaking of the case portion 31. A leak detection device for a hydrogen fuel tank or supply unit, characterized in that it further includes a prevention unit (70). According to clause 7,
A hydrogen fuel tank that is installed at the top of the expansion tube 50 and further includes an opening and closing part 80 that opens and closes the expansion tube 50 when leaked hydrogen is detected through the detection means 20. Or a leak detection device in the supply section.