KR101987357B1 - Hydrogen Filling System having Hydrogen Storage Vessel and Method of Operating the same - Google Patents

Abstract

A hydrogen filling system comprises: a first filling station having a plurality of hydrogen storage containers; and a central server unit receiving data from the first filling station and providing information calculated from the data to the first filling station. Each of the hydrogen storage containers comprises: a container; at least one acoustic sensor installed on a surface of the container, and using acoustic emission to detect a breakage position of the container; and at least one displacement sensor installed to face a surface of the container to measure an outer diameter of the container.

Description

Hydrogen Filling System having Hydrogen Storage Vessel and Method of Operating the same}

The present invention relates to a hydrogen charging system including a hydrogen storage container and a method of operating the hydrogen charging system, and more particularly, to a hydrogen charging system capable of real-time monitoring of a hydrogen storage container and a method of operating the hydrogen charging system. will be.

In recent years, hydrogen, which is a fuel of a fuel cell, has attracted attention as a clean energy source. However, hydrogen is not only a metal high-pressure hydrogen gas container, but also a high-pressure hydrogen gas container using a liner made of aluminum alloy or reinforced plastic to reduce weight, and has excellent hydrogen embrittlement resistance to increase reliability. Material is required.

Accordingly, the container having improved hydrogen embrittlement resistance has a structure in which a fiber reinforced resin or a reinforcing fiber is wound around the outer surface of a liner such as an aluminum alloy or a metal (TYPE3) and a structure in which the reinforcing fiber is wound around a container made of the reinforcement plastic (TYPE4). Are classified as).

On the other hand, there are liquefied fuel leakage inspection devices and leak inspection methods using acoustic sensors, but they are not suitable for hydrogen storage containers and can be checked for damages. It is not managed to solve the fundamental problem.

Republic of Korea Patent Publication No. 10-2015-0120733

 The technical problem of the present invention was conceived in this background, an object of the present invention is to provide a hydrogen charging system including a hydrogen storage container for preventing the leakage of hydrogen in advance.

Another object of the present invention is to provide a method of operating the hydrogen charging system including the hydrogen storage container.

According to an embodiment of the present invention, there is provided a hydrogen charging system including a first charging station including a plurality of hydrogen storage containers, and receiving data from the first charging station, and receiving data from the first charging station. It includes a central server unit for providing the calculated information. Each of the hydrogen storage vessels is installed on a vessel, at least one acoustic sensor installed on the surface of the vessel, and using acoustic emission to detect a breakage position of the vessel, and facing the surface of the vessel. At least one displacement sensor for measuring the outer diameter of the container.

In one embodiment of the present invention, the hydrogen charging system may further include a first charging station including a plurality of hydrogen storage containers. Each of the first and second filling stations may generate damage information on the outer diameter data of the container and whether or not the container is damaged and the location of the damage by using the acoustic sensor and the displacement sensor of the hydrogen storage container, respectively. The central server unit receives the outer diameter data and the damage information from the first charging station and the second charging station, calculates an outer diameter range having a high damage rate of the container from the outer diameter data and the damage information, and breaks the container. Danger range outer diameter information for the outer diameter range of the container having a high rate can be generated.

In one embodiment of the present invention, the central server unit may provide the dangerous range outer diameter information to the first and second charging station. The first and second filling stations may measure the outer diameter of the containers in real time using the displacement sensor. During the operation of the first and second filling stations, when the vessel of the hydrogen storage vessel falls within the outer diameter range of the breakage rate of the vessel, the hydrogen storage vessel may be checked or replaced with a new hydrogen storage vessel.

In one embodiment of the present invention, the central server unit may provide the dangerous range outer diameter information to the first and second charging station. The first and second filling stations may measure the outer diameter of the containers in real time using the displacement sensor. During operation of the first and second filling stations, when the vessel of the hydrogen storage vessel falls within the outer diameter range where the damage rate of the vessel is high, the user may be warned.

In one embodiment of the present invention, the hydrogen storage container may further include a frame in which the displacement sensor is installed. Two or more displacement sensors may be disposed to measure an outer diameter of the hydrogen storage container.

In one embodiment of the present invention, a height adjustment portion is formed between the frame and the displacement sensor, even if the size of the container is changed in various ways, by adjusting the height of the height adjustment portion, the displacement sensor and the container of the The distance between the surfaces may be included in an appropriate range in which the displacement sensor can operate.

In one embodiment of the present invention, the acoustic sensor may include first to fourth acoustic sensors. The displacement sensor may include first to fourth displacement sensors. On the cross section of the container, the first acoustic sensor is attached to the surface of the upper side of the container, and the second acoustic sensor is attached to the lower surface of the container. The third acoustic sensor and the fourth acoustic sensor may be attached to a surface thereof. The first displacement sensor is installed on the frame to face the upper side of the container, and the second displacement sensor is installed on the frame to face the lower side of the container, and the third displacement sensor faces the left and right sides of the container. The displacement sensor and the fourth displacement sensor may be installed in the frame.

In one embodiment of the present invention, the hydrogen storage container may further include a frame in which the displacement sensor is installed. The acoustic sensor and the displacement sensor may be disposed to face each other.

The operating method of the hydrogen charging system according to an embodiment for realizing the object of the present invention is installed on the container, the surface of the container using at least acoustic emission (acoustic emission), at least to detect the damaged position of the container Installing a charging station including a plurality of hydrogen storage vessels including at least one acoustic sensor and at least one displacement sensor installed to face the surface of the vessel, the at least one displacement sensor measuring the outer diameter of the vessel, using the displacement sensor An outer diameter sensing step of measuring respective outer diameters of the plurality of containers, a data conversion step of generating outer diameter data for the containers from the measured values, and a damaged one of the containers using the acoustic sensor. Detect the damage location of the container, and generate damage information on whether or not the container is broken A damage updating step, synchronizing the damage information to outer diameter data measured for the container in which the damage occurred, and updating the outer diameter data value corresponding to the damaged information, and updating the outer diameter data and the damaged information And calculating the outer diameter range having a high breakage rate to calculate an outer diameter range having a high breakage rate of the container.

In one embodiment of the present invention, the operating method of the hydrogen filling system by measuring the outer diameter of the vessels in real time using the displacement sensor, during the operation of the filling stations, the vessel of the hydrogen storage vessel of the vessel If the damage rate corresponds to a high outer diameter range, it may further include a real-time detection step to warn the user.

In one embodiment of the present invention, the operation method of the hydrogen charging system using the risk range outer diameter information, including the step of preventing accidents due to leakage through the inspection or replacement of the hydrogen storage container in advance. can do.

According to embodiments of the present invention, a hydrogen charging system receives a data from a first charging station including a plurality of hydrogen storage containers, and the first charging station, and provides information calculated from the data to the first charging station It includes a central server unit. Each of the hydrogen storage vessels is installed on a vessel, at least one acoustic sensor installed on the surface of the vessel, and using acoustic emission to detect a breakage position of the vessel, and facing the surface of the vessel. At least one displacement sensor for measuring the outer diameter of the container. Accordingly, the outer diameter of the container may be measured in real time, and the data may be detected by detecting whether or not the container is broken, and thereby, the outer diameter range having a high breakage rate may be calculated to calculate the outer diameter range of the container, thereby causing the container to be damaged during operation of the filling station. When the rate falls within the outer diameter range, the user can be warned in advance to prevent damage to the container.

However, the effects of the present invention are not limited to the above effects, and may be variously extended within a range without departing from the spirit and scope of the present invention.

1 is a plan view of a hydrogen storage container according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the hydrogen storage vessel taken along the line II ′ of FIG. 1.
3 is a block diagram of a hydrogen charging system according to an embodiment of the present invention.
4 is a flowchart illustrating a method of operating a hydrogen charging system according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

1 is a plan view of a hydrogen storage container according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the hydrogen storage vessel taken along the line II ′ of FIG. 1.

1 and 2, the hydrogen storage container may include a container 10, a support 20, a frame 30, a plurality of acoustic sensors AS, and a plurality of displacement sensors DS.

The container 10 may include a metal liner and a composite liner surrounding the metal liner. The container 10 is formed using a filament widing method on the metal liner to impregnate carbon fiber with an epoxy resin to form a full wrap through a hoop and a helical process. It may be a container for storing hydrogen.

The container 10 may be a cylindrical container extending in a first direction D1, and a cut surface on a plane formed by a second direction D2 and a third direction D3 perpendicular to the first direction D1. This may be circular.

The support part 20 may support the neck portion of the container 10, and thus, even if the outer diameter of the container 10 changes according to the internal pressure and temperature of the container 10, the container ( 10) can be firmly supported.

The frame 30 may be disposed to surround one end surface of the container 10. The displacement sensor DS may be installed in the frame 30. The displacement sensor may include first to fourth displacement sensors DSa, DSb, DSc, and DSd. In detail, on the cross section of the container 10, the first displacement sensor DSa is installed on the frame 30 so as to face the upper side of the container 10, and the container 10 may be disposed in the second direction ( The second displacement sensor DSb is installed on the frame 30 so as to face the lower side of D2), and the third displacement sensor DSc and the fourth displacement sensor so as to face the left and right sides of the container 10. DSd may be installed in the frame 30.

The displacement sensor DS may measure the outer diameter of the container 10 in real time. The displacement sensor DS may be a laser displacement sensor for measuring a distance from a specific object by receiving a laser beam hit by a specific object by irradiating a laser beam toward a specific object. For example, the displacement sensor DS The outer diameter of the container 10 may be measured by irradiating a laser beam on the surface of the acoustic sensor AS facing the) and receiving a reflected laser, and the first and second displacement sensors DSa, Using the outer diameter measured using DSb) and the outer diameter measured using the third and fourth displacement sensors DSc and DSd, the averaged outer diameter can be obtained or the outer diameter in the direction in which the abnormality is issued can be measured. have.

At this time, irrespective of the outer diameter of the container 10, between the first to fourth displacement sensors ASa, ASb, ASc, and ASd and the frame 30 so that the displacement sensors are positioned at appropriate positions. The first to fourth position adjusting parts 32a, 32b, 32c, and 32d may be further disposed. By adjusting the heights of the position adjusting parts 32a, 32b, 32c, and 32d, even when the outer diameter of the container 10 changes, such as when the container 10 is replaced, the displacement sensor can operate normally. It is possible to change the installation position of the displacement sensor to an appropriate position.

The plurality of acoustic sensors AS may be installed on the surface of the container 10. The plurality of acoustic sensors AS may be installed to face the displacement sensors DS. The plurality of acoustic sensors AS may include first to fourth acoustic sensors ASa, ASb, ASc, and ASd. Specifically, on the cross section of the container 10, the first acoustic sensor ASa is attached to the surface of the upper side of the container 10 and is installed, and the surface of the lower side of the container 10 is attached. The second acoustic sensor ASb is attached to the upper surface of the container 10, and the third acoustic sensor ASc and the fourth acoustic sensor ASd are attached to the surfaces of the left and right sides of the container 10. Can be installed.

The strength of the acoustic signal transmitted from the acoustic sensor AS may be analyzed to detect whether or not the container 10 is damaged and the damaged position. Specifically, the acoustic sensor AS senses the flow of gas generated at the broken position of the vessel 10, analyzes the intensity of the acoustic signal transmitted from the acoustic sensor AS, and analyzes the vessel ( 10) The damage position can be detected. Here, the leak location can be detected using various known methods, for example, the damage location of the container 10 can be detected using acoustic emission. The acoustic radiation refers to a phenomenon of propagation as a longitudinal wave when elastic energy is released due to plastic deformation or destruction of a solid material. The detection of an AE wave (acoustic emission wave) enables the passive nondestructive test to enable macroscopic and efficient observation of the dynamic defects of the metallic structural members. The method of observing AE waves using an ultrasonic sensor is called AE method.

The acoustic sensors AS may be installed at a plurality of positions, and may detect acoustic emission signals at a plurality of positions. By analyzing the number of hits, amplitude, rise time, count, duration, etc. of the acoustic emission signal, it is possible to detect whether or not the vessel 10 is damaged.

Here, to detect whether the container 10 is damaged and the location of the damage, it may be exemplified as below in a variable that may be considered of the acoustic emission signal.

event: indicating the generation of an acoustic emission signal from a source,

hit: A measure of the frequency of sound emission, representing one abrupt signal detected by the transducer

amplitude: the maximum amplitude of an acoustic emission event

count: the number of crests above the set threshold voltage

rise time: The time from when the threshold voltage is exceeded to the maximum amplitude in an event

duration: The time from when the event exceeded the threshold voltage to the end of the event

3 is a block diagram of a hydrogen charging system according to an embodiment of the present invention.

1 to 3, the hydrogen charging system may include a plurality of charging stations and a central server unit 500 such as a first charging station 100, a second charging station 200, and a third charging station 300. .

The first charging station 100 may include a plurality of hydrogen storage vessels 10a, 10b, 10c, 10d, and 10e. As shown in FIGS. 1 and 2, each of the hydrogen storage containers is supported by the support 20, a frame 30 is installed, and the displacement sensor DS and the acoustic sensor AS are used as containers. The outer diameter and the breakage of the and the location of the breakage can be detected. In the drawing, the hydrogen storage vessels 10a, 10b, 10c, 10d, and 10e are all shown to have the same size, but the hydrogen storage vessels may have different sizes.

That is, the first to third charging stations (100, 200, 300) using the acoustic sensor and the displacement sensor of the hydrogen storage vessel, respectively, the outer diameter data of the vessel and whether the damage of the vessel and the location of the damage Damage information DATA may be generated.

The central server unit 500 receives the outer diameter data and the damage information DATA from the first to third charging stations 100, 200, and 300, and receives the outer diameter data and the damage information DATA from the outer diameter data and the damage information DATA. By calculating the outer diameter range having a high breakage rate of the container, the dangerous range outer diameter information INF for the outer diameter range of the high breakage rate of the container may be generated.

The central server unit 500 provides the dangerous range outer diameter information INF to the first to third charging stations 100, 200 and 300, and the first to third charging stations 100, 200 and 300. ) May measure the outer diameter of the containers in real time using the displacement sensor. Accordingly, when the vessel of the hydrogen storage vessel is in the outer diameter range of the high damage rate of the vessel during operation of the first to third filling stations (100, 200, 300), to warn the user, The container can be checked in advance, and the container can be replaced in advance to prevent breakage of the container.

4 is a flowchart illustrating a method of operating a hydrogen charging system according to an embodiment of the present invention.

The operating method of the hydrogen charging system is the installation step (S100), the outer diameter detection step (S200), the data step (S300), the damage site check step (S400), the data update step (S500), the outer diameter range of the failure rate is calculated high A step S600 and a real time detection step S700 may be included. In addition, the operating method of the hydrogen charging system may further include a step (S800) to prevent accidents in advance.

In the installing step (S100), the container, at least one acoustic sensor which is installed on the surface of the container to detect the damaged position of the container using acoustic emission, and facing the surface of the container It is installed, it is possible to install a filling station including a plurality of hydrogen storage vessel including at least one displacement sensor for measuring the outer diameter of the vessel. The charging station may be provided in plurality.

In the outer diameter detecting step S200, each outer diameter of the plurality of containers may be measured using the displacement sensor. The outer diameter measurement may be continuously performed in real time.

In the data step S300, external diameter data of the containers may be generated from the measured values.

In the damage site confirmation step (S400), by using the acoustic sensor to detect the damage location of the damaged containers of the containers, it is possible to generate the damage information about the damage and the location of the container.

In the data update step (S500), by synchronizing the damage information to the outer diameter data measured for the damaged container, it is possible to update the outer diameter data value corresponding to the damage information.

In the outer diameter range calculation step (S600) having a high breakage rate, the outer diameter range having a high breakage rate of the container may be calculated using the outer diameter data and the breakage information.

In the real-time detection step (S700), by measuring the outer diameter of the vessels in real time using the displacement sensor, during operation of the filling stations, the vessel of the hydrogen storage vessel corresponds to the outer diameter range of the high damage rate of the vessel If so, the user can be alerted.

In the step of preventing the accident in advance (S800), if the damage rate of the container according to the real-time detection step (S700) falls within the high outer diameter range, the user checks the container to find out whether there is an abnormality You can prevent accidents by replacing them. In addition, when the damage rate of the container falls within the high outer diameter range, even if no abnormality is found, the container may be replaced in advance for safety reasons.

According to embodiments of the present invention, a hydrogen charging system receives a data from a first charging station including a plurality of hydrogen storage containers, and the first charging station, and provides information calculated from the data to the first charging station It includes a central server unit. Each of the hydrogen storage vessels is installed on a vessel, at least one acoustic sensor installed on the surface of the vessel, and using acoustic emission to detect a breakage position of the vessel, and facing the surface of the vessel. At least one displacement sensor for measuring the outer diameter of the container. Accordingly, the outer diameter of the container may be measured in real time, and the data may be detected by detecting whether or not the container is broken, and thereby, the outer diameter range having a high breakage rate may be calculated to calculate the outer diameter range of the container, thereby causing the container to be damaged during operation of the filling station. When the rate falls within the outer diameter range, the user may be warned in advance to prevent accidents that may occur due to breakage of the container.

Although described with reference to the embodiments above, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

10: container 20: support
30: frame AS: acoustic sensor
DS: displacement sensor 100, 200, 300: charging station
500: central server unit

Claims (11)

A first charging station including a plurality of hydrogen storage containers; And
A central server unit for receiving data from the first charging station and providing information calculated from the data to the first charging station; And
A second charging station comprising a plurality of hydrogen storage vessels,
Each hydrogen storage container
A container comprising a metal liner and a composite liner surrounding the metal liner and comprising carbon fibers;
At least one acoustic sensor installed on a surface of the container to detect a damaged position of the container by using acoustic emission; And
A displacement sensor installed facing the surface of the container, the displacement sensor measuring an outer diameter of the container and disposed at least two or more; And
A frame on which the displacement sensor is installed,
The first and second filling stations respectively use the acoustic sensor and the displacement sensor of the hydrogen storage container to generate damage information on the outer diameter data of the container and whether or not the container is damaged and the location of the damage.
The central server unit receives the outer diameter data and the damage information from the first charging station and the second charging station, calculates an outer diameter range having a high damage rate of the container from the outer diameter data and the damage information, and thus damage rate of the container. Hydrogen charging system, characterized in that for generating a high risk range outer diameter information for the outer diameter range of the vessel. delete According to claim 1,
The central server unit provides the dangerous range outer diameter information to the first and second charging stations,
The first and second filling stations to measure the outer diameter of the containers in real time using the displacement sensor,
When the vessel of the hydrogen storage vessel is in the outer diameter range of the high damage rate of the vessel during operation of the first and second filling station,
Hydrogen charging system, characterized in that for checking the hydrogen storage container or replace with a new hydrogen storage container. According to claim 1,
The central server unit provides the dangerous range outer diameter information to the first and second charging stations,
The first and second filling stations to measure the outer diameter of the containers in real time using the displacement sensor,
Hydrogen charging system, characterized in that for the first and second filling station operation, if the vessel of the hydrogen storage container falls within the outer diameter range of the high damage rate of the vessel. delete The method of claim 1,
A height adjusting part is formed between the frame and the displacement sensor, so that even if the size of the container is varied, the height adjusting part is adjusted so that the distance between the displacement sensor and the surface of the container is increased. Hydrogen charging system characterized in that it is included in the appropriate range to operate. The method of claim 1,
The acoustic sensor includes first to fourth acoustic sensors,
The displacement sensor includes first to fourth displacement sensors,
On the cross section of the container, the first acoustic sensor is attached to the surface of the upper side of the container, and the second acoustic sensor is attached to the lower surface of the container. The third acoustic sensor and the fourth acoustic sensor are attached to the surface and installed,
The first displacement sensor is installed on the frame to face the upper side of the container, and the second displacement sensor is installed on the frame to face the lower side of the container, and the third displacement sensor faces the left and right sides of the container. Hydrogen charging system, characterized in that the displacement sensor and the fourth displacement sensor is installed in the frame. delete At least one acoustic sensor installed on a surface of the container, the surface of the container using acoustic emission, and detecting a damaged position of the container, and installed to face the surface of the container to measure an outer diameter of the container. Installing a charging station including a plurality of hydrogen storage containers including at least one displacement sensor;
An outer diameter sensing step of measuring respective outer diameters of the plurality of containers using the displacement sensor;
A data step of generating outer diameter data for the containers from the measured values;
Detecting a damage site for detecting the damage location of the damaged containers of the container by using the acoustic sensor, and generating damage information on whether the container is damaged and the damaged location;
Updating the outer diameter data value corresponding to the damage information by synchronizing the damage information with the outer diameter data measured for the damaged container; And
Using the outer diameter data and the damage information, the operation method of the hydrogen charging system comprising a step of calculating the outer diameter range of the high failure rate to calculate the outer diameter range of the high failure rate of the container. The method of claim 9,
The outer diameter of the vessels is measured in real time using the displacement sensor, and during operation of the filling stations, when the vessel of the hydrogen storage vessel falls within the outer diameter range where the damage rate of the vessel is high, a real-time detection Operation method of a hydrogen charging system, characterized in that it further comprises a step. The method of claim 9,
The operating method of the hydrogen charging system further comprises the step of preventing accidents that may occur due to leakage through the inspection or replacement of the hydrogen storage container by using the outer diameter range of the high damage rate, the hydrogen, characterized in that How to operate the charging system.

Images