KR101913408B1 - Blocking apparatus of leakage of storage tank of harmful chemical and Method of the same - Google Patents

Abstract

Disclosed is a leakage preventing device for a toxic chemical storage tank and a method of isolating the leakage of the toxic chemical, which seals the leakage of harmful chemicals in a storage tank in which toxic chemicals are stored, and seals the leaked portion. The leakage preventing device for a toxic chemical storage tank according to an embodiment of the present invention includes a detection sensor for detecting a leakage solution or leakage gas leaking from a storage tank, a moving bogie moving along a rail installed around the storage tank, And a sealing device installed in the moving block and adapted to insert the sealing member into a crack in which leakage gas leaks.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leakage preventing device for a toxic chemical storage tank,

The present invention relates to an apparatus and method for preventing leakage of toxic chemical storage tanks, and more particularly, to a system and method for detecting a leakage of harmful chemicals in a storage tank in which toxic chemicals are stored, And more particularly, to a leakage preventing device for a toxic chemical storage tank and a method of isolating the same.

Since stainless steels generate oxidation scales on the surface in processes such as hot rolling and heat treatment, these scales are completely removed in the pickling process, and passivation treatment is applied to impart corrosion resistance to stainless steel to produce products with good surface quality. .

This pickling process uses a method in which a high-pressure spray is sprayed on a scale layer formed on a surface of a strip in a salt bath, and in the sulfuric acid tank, the salt of the residue formed on the edges of the strip is neutralized. The acid used in the hydrolysis process after washing in the electrolytic tank includes nitric acid, hydrofluoric acid, sulfuric acid, hydrochloric acid, and phosphoric acid. These hydrocarbons are used singly or in mixed form, and a mixture of nitric acid and hydrofluoric acid is generally used .

Since hydrofluoric acid has low boiling point and high toxicity, caution must be taken when using it, and hydrochloric acid and hydrofluoric acid are often used as a mixture with nitric acid because they erode not only the scale but also the metal substrate itself.

In the pickling process, the strip is passed through the mixing bath to perform a pickling process. The mixed bath is supplied with the mixed acid stored in the mixed acid storage tank, the circulating water supplied through the fresh water line is filled up, and the operation is carried out at the proper concentration with the temperature raised by the steam.

On the other hand, the toxic chemical storage tank may be cracked due to external impact or strong causticity of mixed acid containing nitric acid and hydrofluoric acid stored therein. When such cracks occur, leakage of nitric acid and hydrofluoric acid stored in the inside causes not only pollution of the surrounding environment but also causes damage to human life.

Conventionally, in order to prevent leaks when a solution leaks from a toxic chemical storage tank, a method of accumulating levees or monitoring by a worker using a camera has been used. Particularly, when the leakage of the storage tank is eroded, it is difficult to take other measures. When the leakage is completed, neutralization chemicals are sprayed on the leakage of toxic chemicals, and neutralization or dilution with water has been used.

However, the conventional methods can not prevent the leakage itself, and are merely a post-treatment such as neutralization treatment after leakage. Such a post-treatment process takes a long time, and already leaked toxic chemicals spread to a wide area, causing environmental pollution. Especially in a country where the atmosphere is very stable, temperature and humidity conditions are satisfied, Causing serious damage to neighboring residents and farms.

Korean Patent Laid-Open No. 10-2001-0079251 discloses a method for treating hydrofluoric acid wastewater discharged from a semiconductor factory.

[Patent Literature] 1) Korea Patent Publication No. 10-2001-0079251 (Aug. 22, 2001) [Patent Literature] 2) Korean Registered Utility Model No. 20-0250718 (Oct. 04, 2001)

An embodiment of the present invention is to provide a leakage preventing device for a toxic chemical storage tank which can automate the process of sealing the leaking area when toxic chemicals are generated or can be remotely controlled while an operator monitors the leaking process.

According to an aspect of the present invention, there is provided a gas sensor comprising: a sensor for detecting leakage solution or leakage gas leaking from a storage tank; A moving truck moving along a rail installed around the storage tank; A moving block installed on the moving truck and movable up and down; And a sealing device installed in the moving block for inserting a sealing member into a crack where the leaking gas leaks, can be provided.

In addition, the moving block may include a position sensing sensor for sensing a target position of the sealing member.

In addition, the moving block may include a surveillance camera for outputting a video signal of the storage tank.

In addition, the moving block may further include a light for illuminating the storage tank.

The moving carriage includes a guide rod extending in the vertical direction and a cylinder unit extending in the vertical direction, and the moving block is guided by the guide rod and connected to the cylinder unit so as to move up and down.

Further, the guide rod and the cylinder unit are installed so as to extend in the vertical direction, and the cylinder unit includes a connecting rod connected to the moving block, and the connecting rod is bent at the upper portion of the cylinder unit and extends downward And can be connected to the mobile block.

In addition, the sealing device may include a cylinder device arranged to face the storage tank, and the sealing device may be elongated to insert the sealing member into the crack.

Further, a metal arrowhead is coupled to the end of the sealing member to be inserted into the crack, and the sealing member is provided with a press paper to seal the crack.

Further, the sealing member can seal the crack while being wetted with the solution contained in the storage tank.

According to another embodiment of the present invention, the detection sensor senses leakage solution or leakage gas leaking from the storage tank, and moves a moving bail to a region where a crack of the storage tank is located along a rail installed around the storage tank A moving block provided on the moving truck moves up and down to move to a height at which the crack is located and a sealing device provided in the moving block is extended to insert a sealing member into the crack to seal the crack, A water leakage prevention method of a water storage tank may be provided.

Further, the position of the crack can be determined through the position sensor installed in the moving block.

Further, the target position of the sealing member can be confirmed through the surveillance camera installed in the mobile block.

According to the embodiment of the present invention, the leakage preventing device of the toxic chemical storage tank can automatically and quickly seal the crack that leaks toxic chemicals remotely, thereby minimizing the damage caused by leakage of harmful chemicals, It is possible to prevent leakage.

In addition, it can instantly detect the leakage of toxic chemicals to provide an alarm, and automated remote control can instantly shut down hazardous chemicals, minimizing the risk of harmful chemicals quickly and safely.

In addition, the driver can look at the monitor remotely and visually confirm where the toxic chemical has leaked, and can perform an emergency action to seal the crack by operating the sealing device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a leakage preventing device of a toxic chemical storage tank according to an embodiment of the present invention installed around a storage tank. FIG.
2 is a perspective view showing a leakage preventing device.
Fig. 3 is a view showing a moving bogie.
4 is a view showing a moving block and a sealing device.
5 is a view showing a state in which the sealing member is engaged.
Fig. 6 is a side view showing a leakage preventing device before leakage proceeds. Fig.
Fig. 7 is a side view showing the leakage preventing device immediately after the leakage proceeds. Fig.
8 is a side view showing the leakage preventing device after the sealing is completed.

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

The embodiments described below are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. The present invention is not limited to the embodiments described below and may be embodied in other forms. In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and the width, length, thickness, etc. of the components may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

1 is a view showing a state in which a leakage preventing device 100 of a toxic chemical storage tank according to an embodiment of the present invention is installed around a storage tank 10. FIG 2 is a perspective view showing a leakage preventing device 100, to be.

Referring to FIGS. 1 and 2, the storage tank 10 may store toxic chemicals such as hydrofluoric acid, sulfuric acid, and the like. The storage tank 10 is a container having a space capable of storing an acid or a base solution therein, and may be provided in a cylindrical shape, for example. And the acid or base solution stored in the storage tank 10 can be supplied through an injection line (not shown) and injected into the required process.

For example, the storage tank 10 may store a hydrofluoric acid (HF) 55% hazardous chemical that uses a cold rolled coil of stainless steel (STS) for pickling to separate the scale attached to the strip after annealing. Hydrofluoric acid has a high reactivity and is not easily ionized and is classified as a weak acid. However, when it reacts with moisture in the air due to a strong hydrogen bonding force, it causes a large explosion, It is preferable that the storage tank 10 storing hydrofluoric acid is made of synthetic resin (polyethylene).

The leakage preventing device 100 for a toxic chemical storage tank according to an embodiment of the present invention includes a detection sensor 10 for detecting a leak of a toxic chemical when a crack 11 is generated due to corrosion or external impact of the storage tank 10, A movable bogie 120 moving around the storage tank 10, a movable block 140 installed on the movable bogie 120 and moving up and down, (150) for inserting the sealing member (152) into the sealing member (11).

The detection sensor 110 detects the leakage of the toxic chemical through the crack 11 of the storage tank 10 and generates a signal indicating that the toxic chemical has leaked to the control unit 111. For example, the sensing sensor 110 may sense fumes of toxic chemicals.

The control unit 111 may send a signal for executing an alarm when a leak signal is inputted from the detection sensor 110. [ When the alarm is activated, the operator can quickly check for leaks.

A plurality of detection sensors 110 may be installed around the storage tank 10. For example, four sensing sensors 110 may be installed around the storage tank 10 at intervals of 90 degrees. The control unit 111 can recognize the area where the hazardous chemical leaks through which sensor 110 first receives the leak signal. At this time, as the detection sensor 110 is installed in a large number of locations, the accuracy of the leakage region of the toxic chemicals judged by the control unit 111 can be increased.

3 is a view showing the moving bogie 120. Fig.

Referring to FIG. 3, the moving truck 120 can move along a rail 112 installed outside the storage tank 10. The rail 112 may be installed in a circular or elliptical shape along the outer periphery of the storage tank 10. And the moving carriage 120 may be provided to circulate around the storage tank 10 along the rail 112. [ That is, the moving truck 120 may be provided to move around the storage tank 10 by 360 degrees or more. In addition, the moving truck 120 can selectively move around the storage tank 10 in the clockwise direction and the counterclockwise direction.

For example, the rail 112 may be provided with two lines of different diameter, and the moving carriage 120 may include two or more drive wheels 121 that move along the rail 112. The driving wheel 121 is driven by a sprocket 123 connected to the driving rotation shaft 122 and a chain 126 connected to the second sprocket 125 connected to the axis of the driving motor 124 . Alternatively, the power transmission between the drive motor 124 and the drive wheel 121 may be transmitted by a belt, a gear combination, etc. in addition to the chain 126.

It is needless to say that the shape and structure of the rail 112 and the moving carriage 120 may be variously different from those described above.

Further, the control unit 111 can send a signal to operate the drive motor 124 of the mobile truck 120. Accordingly, the control unit 111 can send the mobile truck 120 to the leaking area.

Fig. 4 is a view showing the moving block 140 and the sealing device 150. Fig.

Referring to FIG. 4, the mobile block 140 may be provided on the mobile truck 120 so as to be movable up and down. Specifically, the moving carriage 120 is provided with a guide rod 130 extending in the vertical direction, and the moving block 140 can move along the guide rod 130. For example, the mobile block 140 may include a hole for receiving the guide rod 130. Although not shown in the drawing, the moving block 140 may further include a rotation preventing structure for preventing flame formation along the outer periphery of the cylindrical guide rod 130.

The moving block 140 can be moved up and down by the force provided by the cylinder unit 131 installed on the moving truck 120. [ For example, two cylinder units 131 are vertically installed on the moving truck 120, and a connecting rod 132, which moves up and down by the operation of the cylinder unit 131, Can be connected.

The connection rod 132 may be connected to the upper portion of the cylinder unit 131 on one side and may extend in a downward direction while being bent in a "U" shape, and the other side may be connected to the movable block 140. Accordingly, the moving block 140 may be positioned to face the lower portion of the storage tank 10 regardless of the height of the cylinder unit 131. [

Referring to FIG. 4, the sealing device 150 is installed in the moving block 140 and is provided to be capable of extending the length. The sealing device 150 may be inserted into the crack 11 of the storage tank 10 while the sealing member 152 is long.

The sealing device 150 may be a cylinder arranged to face the storage tank 10. The sealing device 150 may include a cylinder body 151a coupled to the moving block 140 through the bracket 144 and a cylinder rod 151b moving in the longitudinal direction within the cylinder body 151a.

5 is a view showing a state in which the sealing member 152 is engaged.

5, the sealing member 152 may be releasably coupled to the end of the cylinder rod 151b. The sealing member 152 can be inserted into the crack 11 while the cylinder rod 151b is advanced toward the storage tank 10. [

The sealing member 152 may be provided in the shape of an arrowhead or a window. The sealing member 152 may be provided with a pointed front end so as to be easily inserted into the crack 11 in the narrow gap.

And the sealing member 152 may be provided of a squeeze paper material so as to seal the crack 11. An arrowhead 153 made of a metal is coupled to the distal end of the sealing member 152 to penetrate the cracks 11. The arrowhead 153 can be detachably coupled to the leading end of the sealing member 152. For example, the arrowhead 153 can be engaged with the leading end of the sealing member 152 by screwing.

And the sealing member 152 may be detachably coupled to the cylinder rod 151b. For example, the rear end portion of the sealing member 152 is provided to be fitted in a groove formed in the front end portion of the cylinder rod 151b, and the engaging member 154 can apply pressure so that the sealing member 152 is not separated . After the sealing member 152 is fixed to the crack 11, the engagement of the coupling member 154 can be released to separate the cylinder rod 151b and the sealing member 152 from each other.

Referring to FIG. 4 again, the mobile block 140 may be provided with a position sensing sensor 141 for sensing a target position of the sealing member 152. The moving block 140 may be provided with a surveillance camera 143 for generating a video signal of the storage tank 10. The operator can confirm the crack 11 through the image provided by the surveillance camera 143 and check whether the target position indicated by the position detection sensor 141 matches the crack 11. [ The operator can move the moving truck 120 and the moving block 140 by using a controller (not shown) to align the target position indicated by the position sensor 141 with the crack 11.

The movable block 140 may be provided with a light 142 for providing light to the storage tank 10. The light 142 can allow the operator to confirm the position of the crack 11 even when the visual field is not ensured at night or by fog.

6 to 8, a description will be given of an operation of the leakage preventing device 100 for a toxic chemical storage tank according to an embodiment of the present invention.

Fig. 6 is a side view showing the leak-barrier device 100 before leakage proceeds.

Before the leakage proceeds, the moving carriage 120 and the moving block 140 are positioned at their initial positions. Then, the sealing device 150 is prepared with the sealing member 152 mounted thereon.

Fig. 7 is a side view showing the leakage preventing device 100 immediately after the leakage proceeds.

When the crack 11 is generated in the storage tank 10 and the toxic chemical leaks, the detection sensor 110 senses it and transmits a signal to the control unit 111. The control unit 111 can send a signal for executing an alarm. Then, the operator can determine that the crack 11 is located in the vicinity of the area where the detection sensor 110 receiving the detection signal is located.

The operator operates the controller (not shown) remotely to move the moving truck 120 to a region where the crack 11 is judged to be located. Then, the operator operates the controller to move the movable block 140 to a height at which the crack 11 is located. In this process, the operator can sense the position of the accurate crack 11 using the information provided from the position sensing sensor 141 and the surveillance camera 143, and confirm the target point of the sealing member 152.

8 is a side view showing the leak-barrier device 100 after sealing is completed.

When the target point of the sealing member 152 coincides with the position of the crack 11, the operator can operate the controller to operate the sealing apparatus 150. [ The sealing device 150 pushes the cylinder rod 151b to advance the sealing member 152 and the arrowhead 153 located at the end of the sealing member 152 penetrates the crack 11. [ And the sealing member 152 seals the periphery of the crack 11 to prevent the toxic chemicals from leaking further. At this time, the sealing member 152 can seal the crack 11 more tightly as the toxic chemical is absorbed by the sealing member 152. [

Thereafter, the operator disengages the engaging member 154 in the field to separate the cylinder rod 151b from the sealing member 152. [

The above work has been described that the operator operates the controller remotely. However, it is also possible for the control unit 111 to automatically perform all or some of the described operations.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, You will understand. Accordingly, the true scope of the invention should be determined only by the appended claims.

10: storage tank, 11: crack,
100: leakage preventing device, 110: detecting sensor,
111: control unit, 112: rail,
120: moving truck, 121: driving wheel,
122: rotating shaft, 123: first sprocket,
124: drive motor, 125: second sprocket,
126: chain, 130: guide rod,
131: cylinder unit, 132: connecting rod,
140: moving block, 141: position detecting sensor,
142: light, 143: surveillance camera,
144: Bracket, 150: Sealing device,
151a: cylinder body, 151b: cylinder rod,
152: sealing member, 153: arrowhead,
154: coupling member.

Claims (12)

A sensing sensor for sensing a leaking solution or leakage gas leaking from the storage tank;
A moving truck moving along a rail installed around the storage tank;
A moving block installed on the moving truck and movable up and down; And
And a sealing device installed in the movable block and capable of inserting a sealing member into a crack where the leakage gas leaks and being separable from the sealing member. The method according to claim 1,
Wherein the moving block includes a position sensing sensor for sensing a target position of the sealing member. The method according to claim 1,
Wherein the moving block includes a surveillance camera for outputting a video signal of the storage tank. 3. The method of claim 2,
Wherein the moving block further comprises a light to illuminate the storage tank. The method according to claim 1,
Wherein the moving carriage includes a guide rod extending in the vertical direction and a cylinder unit extending in the vertical direction,
Wherein the moving block is guided by the guide rod and connected to the cylinder unit and moves up and down. 6. The method of claim 5,
The guide rod and the cylinder unit are installed so as to extend in the vertical direction,
Wherein the cylinder unit includes a connecting rod connected to the moving block,
Wherein the connection rod is bent at an upper portion of the cylinder unit and extends downward to be connected to the movable block. The method according to claim 1,
Wherein the sealing device comprises a cylinder device arranged to face the storage tank,
Wherein the sealing device is elongated in length to insert the sealing member into the crack. 8. The method of claim 7,
A metal arrowhead is coupled to an end of the sealing member to be inserted into the crack,
Wherein the sealing member is provided by a press paper to seal the crack. 9. The method of claim 8,
Wherein the sealing member seals the crack while being wetted with the solution contained in the storage tank. The detection sensor senses the leakage solution or the leakage gas leaking from the storage tank,
A moving truck moves to a region where a crack of the storage tank is located along a rail provided around the storage tank,
A moving block installed on the moving truck moves up and down to move to a height at which the crack is located,
The sealing device provided in the moving block is extended to insert the sealing member into the crack to seal the crack,
And separating the sealing device from the sealing member. 11. The method of claim 10,
Wherein the position of the crack is determined through a position sensor installed in the moving block. 12. The method of claim 11,
And a target position of the sealing member is confirmed through a surveillance camera installed in the moving block.

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