KR20230154536A - Leakage detecting apparatus - Google Patents

Abstract

The present invention includes a dropping portion into which the storage liquid leaking from the storage tank falls; and a leakage detection unit that detects at least one of sound or vibration generated from the falling part.

Description

Leakage detection device {LEAKAGE DETECTING APPARATUS}

The present invention relates to a leak detection device that detects leakage of stored liquid.

It should be noted that the content described in this section merely provides background information on the present invention and does not constitute prior art.

If the storage liquid stored in the storage tank leaks, there is a problem that contamination may occur in equipment such as the storage tank, and operation productivity may decrease as work is stopped to remove the leaked storage liquid.

In addition, in the past, workers monitored whether stored liquid was leaking from the storage tank through patrols, etc., but there was a problem in that leakage from the storage tank was discovered only after the leakage had progressed to a significant extent, often leading to large-scale equipment accidents.

If the discovery of a leak of the stored liquid in the storage tank is delayed, the gap at the leak area may become larger over time and a larger amount of the stored liquid may leak.

KR 10-0784898 B1

As an aspect, the present invention seeks to provide a leak detection device that can detect leakage of stored liquid at the initial stage of leakage and prevent operation interruption and large-scale equipment accidents due to leakage of stored liquid.

As an aspect for achieving the above object, the present invention includes a dropping portion into which the storage liquid leaking from the storage tank falls; and a leakage detection unit that detects at least one of sound or vibration generated from the falling part.

The falling unit may include a fall detection member disposed below the leakage area where the stored liquid leaks and generates at least one of sound or vibration when the dropped stored liquid collides.

The dropping portion includes a support frame disposed below a leakage area where the storage liquid leaks; and a fall detection member installed on the support frame and generating at least one of sound or vibration when the dropped storage liquid collides.

The drop detection member may be configured as a drop detection plate that extends in the transverse direction and is made of a plate-shaped member through which the stored liquid falls.

The fall detection plate may have a downward slope inclined to one side, and the falling portion may further include a leak storage tank in which the storage liquid flowing down the downward slope is stored.

The fall detection member may be comprised of a fall detection net made of a mesh-like material, and the fall unit may further include a leak storage tank in which the storage liquid that has penetrated the fall detection net is stored.

A heater for heating the storage liquid may be installed in the storage tank, and the dropping portion may be installed over the lower side of the heater and the lower side of the joint portion of the storage tank and the heater.

The leak detection unit includes a sound sensor that detects sound generated from the falling unit; and a vibration sensor that detects vibration generated from the falling part.

It may further include a drop guide plate installed in the storage tank and inclined downward toward the outside of the storage tank.

It may further include a control unit that determines at least whether the stored liquid is leaking by comparing the measured value of sound or vibration detected by the leak detection unit with a standard set value for whether the stored liquid is leaking.

It may further include an alarm that generates at least one of a warning light or a warning sound when the control unit determines that the stored liquid has leaked.

It may further include an image recognition unit that collects temperature information or image information of the falling part.

The storage tank may be a plating tank in which molten zinc for plating is stored.

According to an embodiment of the present invention as described above, the leak detection device detects leakage of the stored liquid at the early stage of the leak, which has the effect of preventing operation interruption and large-scale equipment accidents due to leakage of the stored liquid.

Figure 1 is a diagram showing an installed state of a leak detection device according to an embodiment of the present invention.
Figure 2 is a diagram showing the leak detection device of Figure 1 as seen from the side.
Figure 3 is a diagram showing a side view of a leak detection device according to another embodiment of the present invention.
Figure 4 is a diagram showing a side view of a leak detection device according to another embodiment of the present invention.
Figure 5 is a diagram showing a side view of a leak detection device according to another embodiment of the present invention.
Figure 6 is a diagram showing an application example of a leak detection device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. However, the embodiments of the present invention may be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Additionally, the embodiments of the present invention are provided to more completely explain the present invention to those with average knowledge in the relevant technical field. The shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

Hereinafter, with reference to FIGS. 1 and 2, the components included in the leak detection device 20 according to an embodiment of the present invention will be described in detail.

Figure 1 is a diagram showing the installed state of the leak detection device 20 according to an embodiment of the present invention, and Figure 2 is a diagram showing the state of the leak detection device 20 of Figure 1 viewed from the side.

The leak detection device 20 according to an embodiment of the present invention may include a drop part 100 and a leak detection part 200.

The storage liquid (L) may be stored in the storage tank 10. The storage tank 10 may include a storage bath 11 in which the storage liquid L is stored and a support leg 13 installed below the storage bath 11. As the support legs 13 are installed in the storage tub 11, the bottom surface where the bottom of the storage bath 11 and the bottom of the support legs 13 are in contact are spaced apart in the vertical direction to form a space 15, The dropping part 100 is disposed in the space 15 and can be introduced into the lower side of the storage bath 11.

The storage liquid (L) leaked from the storage tank 10 may fall into the dropping portion 100. The storage liquid (L) leaked from the storage tank 10 may fall into the dropping portion 100 and generate at least one of sound or vibration.

The falling part 100 is installed around the storage tank 10, and is a part where the storage liquid (L) leaked from the storage tank 10 falls. As the leaked storage liquid (L) collides with the falling part 100, sound or vibration may be generated, or sound and vibration may be generated.

The dropping part 100 may be installed below the expected leak point where leakage of the storage liquid (L) is expected. For example, when a heater (H, inductor) that heats the storage liquid (L) is installed in the storage tank (10), leakage of the storage liquid (L) frequently occurs around the heater (H, inductor), causing it to fall. Unit 100 may be disposed below the installation point of the heater (H).

The leak detection unit 200 can detect at least one of sound or vibration generated from the dropping unit 100. The leak detection unit 200 is installed in connection with the dropping unit 100 and can detect sound or vibration generated when the leaked storage liquid (L) collides with the dropping unit 100. The leak detection unit 200 can detect the sound or vibration of the dropped storage liquid (L), convert it into an electrical signal, and output it to the control unit 400, which will be described later.

If the discovery of a leak of the storage liquid (L) in the storage tank (10) is delayed, the gap at the leak area becomes larger over time, and a larger amount of the storage liquid (L) may leak, resulting in a large-scale equipment accident. .

Therefore, in the leak detection device 20 of the present invention, the leak detection unit 200 detects sound or vibration generated from the dropping part 100 and quickly determines whether the storage liquid (L) is leaking from the storage tank 10. Detection has the effect of preventing operation interruptions and large-scale equipment accidents due to leakage of the storage liquid (L).

The falling part 100 is disposed below the leakage area where the stored liquid (L) leaks, and includes a falling detection member 130 that generates at least one of sound or vibration when the dropped stored liquid (L) collides. It can be included.

The fall detection member 130 may be made of a metal material such as steel.

The drop detection member 130 may be made of a metal material such as steel that can resist high temperature plating liquid, considering the case where the storage liquid L is a high temperature plating liquid (for example, 450° C. or higher).

The drop detection member 130 is disposed below the leakage area where the storage liquid (L) leaks, and the components supporting the drop detection member 130 are various conventional components in addition to the support frame 110 shown in the drawing. Of course, it can be applied to fields.

The falling unit 100 may include a support frame 110 and a falling detection member 130.

The support frame 110 may be disposed below the leakage area where the storage liquid (L) leaks.

For example, the support frame 110 may include a longitudinal frame 111, a transverse frame 113, and a mounting plate 115.

The longitudinal frame 111 extends in the longitudinal direction and may be placed at a corner in a plan view. For example, when the fall detection member 130 has a square shape on a plane, longitudinal frames 111 may be disposed at four corners on the plane.

The transverse frame 113 extends in the transverse direction and can connect two adjacent longitudinal frames 111.

The mounting plate 115 may be installed on the longitudinal frame 111 to support the fall detection member 130. For example, when the fall detection member 130 has a square shape on a plane, mounting plates 115 may be disposed at each of the four corners on the plane. That is, the fall detection member 130 can be supported by four mounting plates 115. At this time, the transverse frame 113 is arranged to be spaced apart from the fall detection member 130 in the longitudinal direction, so that the transverse frame 113 and the fall detection member 130 may not be in contact.

Accordingly, the support frame 110 can support the fall detection member 130 while minimizing the contact area of the fall detection member 130, so that when the stored liquid (L) falls on the fall detection member 130, there is a sound and Vibration can be made to occur smoothly.

Of course, the fall detection member 130 is installed by installing a wire such as a wire (not shown) connecting between the two mounting plates 115 arranged in the front and rear directions and between the two mounting plates 115 arranged in the left and right directions. ) can support the lower side. The wire can support the fall detection member 130 to prevent it from sagging while minimizing the contact area of the fall detection member 130.

For example, when the fall detection member 130 has a rectangular shape on a plane, the bottom of the rectangular edge portion of the fall detection member 130 may be supported by wires arranged in a rectangular shape.

The drop detection member 130 is installed on the support frame 110, and when the dropped storage liquid L collides, at least one of sound or vibration may be generated.

The drop detection member 130 extends in the transverse direction and may be composed of a drop detection plate 131 made of a plate-shaped member through which the storage liquid (L) falls. For example, the fall detection plate 131 may be formed to extend horizontally in the transverse direction. For example, the drop detection plate 131 may be made of a metal plate such as a steel plate, and sound or vibration may be generated due to a collision when the stored liquid L falls on the fall detection plate 131.

Figure 3 is a view showing the leak detection device 20 according to another embodiment of the present invention as seen from the side.

The dropping part 100 may further include a leak storage tank 150.

The fall detection plate 131 may have a downward slope 131a inclined to one side. The leaked storage liquid (L) may fall to the drop detection plate 131 and flow downward along the downward slope (131a) of the fall detection plate 131.

The leak storage tank 150 may store the storage liquid (L) flowing down the falling portion 100 along the downward slope (131a).

The leak storage tank 150 may be installed and supported on the support frame 110. Specifically, the support frame 110 is mounted on the upper side of the storage frame 117, and the storage frame 117 can support the lower side of the leak storage tank 150. The storage frame 117 may be fixed to at least one side of the longitudinal frame 111 or the horizontal frame 113.

A load cell 170 is installed on the lower side of the leak storage tank 150, and can detect the amount of leaked storage liquid (L) by increasing the weight of the leak storage tank 150. In the area where the load cell 170 is installed, the leak storage tank 150, the load cell 170, and the support frame 110 may be arranged from top to bottom.

Figure 4 is a view showing the leak detection device 20 according to another embodiment of the present invention as seen from the side.

The fall detection member 130 is composed of a fall detection net 133 made of a mesh material, and the fall part 100 is a leakage area where the storage liquid (L) penetrating the fall detection net 133 is stored. It may further include a storage tank 150.

The storage liquid (L) leaking into the fall detection network 133 may cause vibration in the fall detection network 133 when it falls. The leaked storage liquid (L) may penetrate the drop detection network 133 and be stored in the leak storage tank 150.

The leakage storage tank 150 has already been described above, and a detailed description will be omitted to avoid duplication.

A heater (H) for heating the storage liquid (L) is installed in the storage tank (10), and the dropping portion (100) is located below the heater (H) and between the storage tank (10) and the heater (H). It can be installed across the lower side of the coupling portion (J).

A heater (H) such as an inductor is installed in the storage tank (10) to heat the stored liquid (L) inside the storage tank (10).

For example, a heater (H) such as an inductor that heats the storage liquid (L) may be installed in the storage tank (10). At this time, the heater (H, inductor) has a complex shape and severe irregularities, and due to wear and cracks of the refractory in the heater (H, inductor), storage liquid (such as molten zinc plating solution) is formed around the heater (H, inductor). L) leakage occurred frequently. Accordingly, the dropping part 100 may be disposed below the installation point of the heater (H).

The dropping unit 100 is installed below the heater (H), so that the storage liquid (L) falling through the heater (H) can fall into the dropping unit (100). In addition, the falling part 100 is installed below the coupling part (J) of the storage tank 10 and the heater (H), so that the storage liquid ( L) may fall into the falling part 100.

For example, the dropping part 100 may be installed larger than the bottom of the heater (H) so as to cover the entire bottom of the heater (H). That is, when viewed from above, the outer edge portion of the heater (H) may be disposed inside the dropping portion (100).

The leak detection unit 200 may include a sound sensor 210 and a vibration sensor 230.

The sound sensor 210 can detect sound generated from the dropping unit 100. The sound sensor 210 is disposed around the falling part 100 and can detect sounds such as falling sound generated when the storage liquid (L) falls on the falling part 100.

For example, the sound sensor 210 may be placed on one side of the dropping unit 100.

As another example, it may be disposed below the fall detection member 130 of the fall unit 100. When the fall detection member 130 is made of a plate-shaped member and consists of a fall detection plate 131, the leaked storage liquid (L) does not penetrate the fall detection plate 131, and the sound sensor 210 It is disposed below the fall detection plate 131 and can more accurately detect the sound of the storage liquid (L) falling on the fall detection plate 131.

The control unit 400 may determine whether the storage liquid (L) is leaking from the storage tank 10 by analyzing the detection value of the sound detected by the sound sensor 210. For example, it is possible to determine whether the storage liquid (L) is leaking by analyzing at least one of the volume of the sound detected by the sound sensor 210 and the interval between sounds.

If the sound generation interval is uniform, it may be determined that the storage liquid (L) is leaking from the storage tank (10).

The vibration sensor 230 can detect vibration generated from the dropping unit 100.

The vibration sensor 230 can detect vibration generated when the storage liquid (L) is dropped into the dropping portion 100. For example, the vibration sensor 230 is electrically connected to an electrode terminal installed on the fall detection member 130 of the falling unit 100 and can detect vibration occurring in the fall detection member 130.

The control unit 400, which will be described later, can determine whether the storage liquid (L) is leaking from the storage tank 10 by analyzing the detection value of the vibration detected by the vibration sensor 230. For example, it is possible to determine whether the storage liquid (L) is leaking by analyzing at least one of the magnitude of the vibration detected by the vibration sensor 230 and the interval between the occurrences of the vibration.

The leak detection unit 200 uses both the sound sensor 210 and the vibrating fine wire 230 to comprehensively analyze the sound and vibration generated when the stored liquid falls on the falling plate 100 to determine the stored liquid (L). It has the effect of more accurately detecting leaks.

As another example, the leak detection device 20 may include either a sound sensor 210 or a vibration sensor 230.

Figure 5 is a diagram illustrating a side view of the leak detection device 20 according to another embodiment of the present invention.

The leak detection device 20 may further include a drop guide plate 300. The drop guide plate 300 is installed in the storage tank 10 and may be arranged to be inclined downward toward the outside of the storage tank 10. For example, the drop guide plate 300 may be installed on the side of the storage tank 10 and allows the storage liquid (L) leaked from the portion away from the side of the storage tank 10 to fall into the dropping portion 100. can do.

This means that when the storage liquid (L) flows down the side of the storage tank (10), the height at which the leaked storage liquid (L) falls to the dropping part (100) is not sufficiently secured, so that the falling part (100) makes a sound or This is because the generation of vibration may not be sufficient.

The leaked storage liquid (L) may flow down the drop guide plate 300 and then fall from the bottom of the drop guide plate 300 to the drop section 100. At this time, the lower end of the drop guide plate 300 may be spaced outward from the side of the storage tank 10.

The lower end of the drop guide plate 300 may be placed at a higher position than the lower end of the storage tank 10. Accordingly, by securing the distance between the lower end of the falling guide plate 300 and the falling part 100 to a certain distance or more, the generation of sound or vibration in the falling part 100 can be facilitated.

Figure 6 is a diagram showing an application example of the leak detection device 20 according to an embodiment of the present invention.

The leak detection device 20 may further include a control unit 400. The control unit 400 compares the measured value of sound or vibration detected by the leak detection unit 200 with the standard setting value for leakage of the stored liquid (L) to at least determine whether there is a leak of the stored liquid (L). You can.

The leak detection unit 200 can detect the sound or vibration of the dropped storage liquid (L), change it into an electrical signal, and output it. The control unit 400 analyzes the electrical signal output from the leak detection unit 200 and outputs it. It is possible to determine whether the stored liquid (L) is leaking.

For example, when the control unit 400 determines that the stored liquid (L) is leaking from the storage tank 10, a leak signal is transmitted to the worker's mobile phone 700 or the leak signal is transmitted to the driver's room so that the worker can control the stored liquid (L). Leakage of (L) can be recognized immediately and follow-up measures can be taken.

The leak detection device 20 may further include an alarm 500. The alarm 500 may generate at least one of a warning light or a warning sound when the control unit 400 determines that the stored liquid L has leaked. For example, the alarm 500 may be composed of a lamp that generates a warning light. As another example, the alarm 500 may be configured with a buzzer that generates a warning sound. Of course, the alarm 500 may be composed of a combination of a lamp that generates a flashing light and a buzzer that generates a warning sound.

The control unit 400 can control whether or not the alarm 500 operates at least depending on whether the storage liquid (L) leaks. For example, the alarm 500 can be installed around the storage tank 10 so that a worker who recognizes a warning light or warning sound around the storage tank 10 can take immediate action. As another example, it can be installed in a driver's cab where a worker resides, allowing the worker who recognizes a warning light or warning sound to take immediate action from the driver's cab.

The leak detection device 20 may further include an image recognition unit 600. The image recognition unit 600 can collect temperature information or image information of the falling part 100.

The image recognition unit 600 may include a thermal image camera that collects temperature information of the falling unit 100. The thermal imaging camera can monitor the falling part 100 and collect temperature information of the falling part 100.

If high-temperature storage liquid (L, for example, high-temperature molten zinc) leaks onto the dropping part 100, the temperature of the falling part 100 may increase, and the thermal imaging camera may detect the temperature of the falling part 100. Temperature information can be collected. The control unit 400 can determine whether the storage liquid (L) has leaked into the dropping unit 100 by analyzing the temperature information collected from the thermal imaging camera.

The image recognition unit 600 may include an image camera that collects image information of the falling unit 100. The image camera can monitor the falling part 100 and collect image information about whether the storage liquid (L) falls on the falling part 100. The control unit 400 may determine whether the storage liquid L has leaked into the falling unit 100 by analyzing image information collected from the image camera.

Of course, the image recognition unit 600 may include a thermal image camera and an image camera at the same time.

The storage tank 10 may be a plating tank 10 in which molten zinc for plating is stored.

A plating solution may be accommodated inside the plating bath 10. The plating bath 10 is placed on the movement path of a metal plate, such as a steel plate, and the metal plate can be plated as the metal plate is immersed in the plating bath.

For example, the plating solution may be a hot-dip zinc plating solution (for example, 450° C. or higher), and it may be desirable for the hot-dip zinc plating solution to contain less than 0.01% Al and the remainder to be composed of Zn. A hot-dip galvanized layer may be formed on the surface of a steel plate by immersing it in the storage tank 10, such as a steel plate.

The plating bath 10 may include a plating bath 11 in which the plating solution is stored, and a support leg 13 installed below the plating bath 11. The plating bath 11 is provided with a support leg 13, so that the bottom surface of the plating bath 11 and the bottom of the support leg 13 are spaced apart in the vertical direction, and the falling part 100 is placed in the plating bath. It can be inserted into the lower part of (11).

For example, when the heater (H) is installed in the plating bath (10), the falling part (100) can be inserted into the lower side of the plating bath (11), so the falling part (100) is located below the heater (H) and the heater ( It can be installed across the lower side of the joint portion (J) of H) and the plating bath (11). Accordingly, the plating liquid falling from the heater (H) and the plating liquid falling from the joint portion (J) of the heater (H) and the plating bath 11 may all fall into the dropping portion 100.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and variations are possible without departing from the technical spirit of the present invention as set forth in the claims. This will be self-evident to those with ordinary knowledge in the field.

10: Storage bath, plating bath 11: Storage bath, plating bath
13: support leg 15: separation space
20: leak detection device 100: falling part
110: support frame 111: longitudinal frame
113: transverse frame 115: mounting plate
117: storage frame 130: fall detection member
131: Fall detection plate 131a: Downward slope
133: Fall detection network 150: Leak storage tank
170: Load cell 200: Leakage detection unit
210: Sound sensor 230: Vibration sensor
300: Fall guide plate 400: Control unit
500: Alarm 600: Image recognition unit
700: Cell phone H: Heater
J: Joint part of storage tank and heater
L: storage solution

Claims (13)

A falling portion where the storage liquid leaking from the storage tank falls; and
A leak detection device comprising a leak detection unit that detects at least one of sound or vibration generated from the falling part.
The method of claim 1, wherein the falling unit,
A leak detection device comprising: a fall detection member disposed below the leakage area where the stored liquid leaks, and generating at least one of sound or vibration when the dropped stored liquid collides with it.
The method of claim 1, wherein the falling unit,
a support frame disposed below the leakage area where the storage liquid leaks; and
A drop detection member installed on the support frame and generating at least one of sound or vibration when the dropped storage liquid collides.
According to paragraph 2 or 3,
A leak detection device comprising a drop detection plate, wherein the drop detection member extends in the transverse direction and is made of a plate-shaped member onto which the stored liquid falls.
According to paragraph 4,
The fall detection plate has a downward slope sloping on one side,
The falling part,
A leak detection device further comprising a leak storage tank in which the storage liquid flowing down the downward slope is stored.
According to paragraph 2 or 3,
The fall detection member is composed of a fall detection net made of a mesh material,
The falling part,
A leakage detection device further comprising a leakage storage tank in which the storage liquid that has penetrated the drop detection network is stored.
According to paragraph 1,
A heater for heating the storage liquid is installed in the storage tank,
The falling part,
A leak detection device installed across the lower side of the heater and the lower side of the joint between the storage tank and the heater.
The method of claim 1, wherein the leak detection unit,
A sound sensor that detects sound generated from the falling part; and
A leakage detection device comprising a vibration sensor that detects vibration generated from the falling part.
According to paragraph 1,
A leakage detection device further comprising a drop guide plate installed in the storage tank and inclined downward toward the outside of the storage tank.
According to paragraph 1,
A leak detection device further comprising a control unit that determines at least whether the stored liquid is leaking by comparing the measured value of sound or vibration detected by the leak detection unit with a standard set value for whether the stored liquid is leaking.
According to clause 10,
A leak detection device further comprising an alarm that generates at least one of a warning light or a warning sound when the control unit determines that the stored liquid has leaked.
According to paragraph 1,
A leak detection device further comprising an image recognition unit that collects temperature information or image information of the falling part.
According to paragraph 1,
A leak detection device, characterized in that the storage tank is a plating tank in which molten zinc for plating is stored.

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