KR102136274B1 - Leak sensing system using air pressure - Google Patents

Abstract

The present invention is a control device (Controller) for the detection of leakage, an air generator (Air Generator) for generating a certain amount of air under the control of the control device, under the control of the control device, connected to the air generating device The air pressure regulator for regulating the pressure of the air generated by the air, the control of the control device, and is connected to the air pressure regulator (Regulator) to distribute the air pressure. It is connected to the air pressure distribution device (Distributor) and is connected to the air pressure sensor (Air Pressure Sensor) and the air pressure detection device (Air Pressure Detector) to react with water without reacting to acids, bases, organic And it relates to a leak detection system (Leak Sensing System) comprising an air pressure sensor means (Air Pressure Sensor) that reacts only to the oil.

Description

Leak sensing system using air pressure

The present invention relates to a sensor for detecting whether a chemical, such as acid, base, organic, or oil leaks, and more particularly, to a leak detection sensor using air pressure.

In the semiconductor manufacturing process and petrochemical process using chemicals, various types of acid and basic chemicals such as sulfuric acid, hydrofluoric acid, nitric acid, hydrogen peroxide and sodium hydroxide are harmful to the human body.

These chemicals are stored in storage tanks located outdoors or indoors, and then transported and used in the corresponding equipment where the manufacturing process is performed through a pipeline for transportation.

Pipelines and manufacturing equipment for transportation that supply chemicals may be corroded by chemicals or leak chemicals to the outside due to careless handling by workers. Leaked chemicals may explode or lead to fire, causing personal injury or adversely affecting other devices, equipment, or parts of the manufacturing site, and it is necessary to quickly detect and respond to chemical leaks.

As a method of sensing a chemical leak, two conductors are arranged, and when an electrically conductive solution is contacted between the two conductors, it is energized to detect a change in the total resistance value.

Recently, outdoor waterproof sensors have been developed that detect leaks by reacting only with chemicals and oils without reacting to water. Patent No. 10-1460020 discloses an acidic solution leak detection device having a structure in which a coating layer is applied to the upper surface of the base film layer so that the material dissolved by the acidic solution does not expose the conductive line to the outside.

However, these conventional leak detection sensors employ a method of sensing a change in resistance value using electricity, and thus, there is a problem that a malfunction occurs due to a change in temperature or a change in humidity.

Republic of Korea Registered Patent No. 10-1460020 Japanese published patent JP2004-093246 A

The present invention was invented to solve the problems as described above, there is no need for a conductive wire, has a waterproof function and detects leakage using air pressure to detect leakage by reacting only with chemicals or oils such as acids, bases, and organics. It aims to provide a system.

In order to achieve the above object, a first embodiment of the present invention is a control device (Controller) for controlling a pneumatic device for detecting leakage, an air generating device under control of the control device and generating a certain amount of air ( Air Generator), an air pressure regulator that is controlled by the control device and is connected to the air generating device to regulate the pressure of the generated air, is connected to the control device, and is connected to the air pressure regulating device to distribute air pressure. The air pressure distribution device (Distributor) to be connected to the control device, and is connected to the air pressure distribution device (Distributor) to detect the pressure of the air (Air Pressure Detector) and the air pressure detection device connected to the reaction to water It does not include air pressure sensor means (Air Pressure Sensor) that reacts only to acids, bases, organic and oils.

On the other hand, the air pressure sensor means according to the present invention is composed of PVC, PET, PFA, PTFA, PI-based resin components having resistance to acids, bases, organics and oils, and is characterized by having a circular rod (pipe) shape.

In addition, in the second embodiment according to the present invention, the air pressure sensor means is characterized in that the shape of a rectangular tube or irregularities.

In addition, the air pressure sensor means according to the present invention is formed in the middle longitudinal direction of the first leakage detection means for reacting to the first material and the second leakage detection means and the middle is formed in the upper middle of the longitudinal direction to react to the second material ㅐ It is characterized in that it is provided with a third leak detection means that is formed in the lower portion of the longitudinal direction and reacts with the third material.

In addition, the air pressure sensor means according to the present invention is formed in a concave-convex shape so that the air inlet means, which are divided into left, center, and right, are configured to be used selectively or as needed, and the left and right sides of the air pressure sensor means It is characterized in that it comprises a leak detection means having a reaction film that is selectively formed as needed on all or a portion of the outer surface (left, top, right) of the pneumatic sensor means formed to detect the leakage of a plurality of chemicals.

In addition, the air pressure sensor means according to the present invention is formed in a concave-convex shape so that the air inlet means, which are divided into left, center, and right, are configured to be used selectively or as needed, and the left and right sides of the air pressure sensor means Air pressure sensor means formed on all or part of the outer surface (left, top, right) is selectively formed on all or a portion as necessary to detect the leakage of a plurality of chemicals having a band-shaped reaction film to detect the leakage It is characterized by having.

In addition, the third embodiment according to the present invention is a circular-shaped body, a pressure display device located inside the body, a solar cell device that generates electricity in response to light, a buzzer device that indicates whether or not there is leakage, the body Located in the central part and configured to be compactly integrated, an air generating device, an air pressure regulating device, an air pressure regulating device, an air pressure distributing device and a control device for controlling them, and located at the lower end of the body and connected to the air pressure distributing device, without reacting to water And point type air pressure sensor means that reacts only to base, organic and oil.

On the other hand, the point-type air pressure sensor means is configured as a removable type, it is characterized in that the structure is easily replaceable when detecting leakage.

Since the leak detection system having the air pressure sensor means according to the present invention does not use a conductive wire, it is possible to solve the problem of malfunction due to temperature and humidity changes in the installation space.

In addition, the present invention can detect quickly when leakage occurs and the air pressure changes in a manner that detects whether there is leakage by using a change in air pressure.

In addition, the present invention can reduce the time required for maintenance because the time and workload required for the installation and replacement of the pneumatic sensor means is much simpler than the electric leak detection sensor using a conductive wire.

In addition, in the present invention, when a region in which a plurality of pneumatic sensor means is installed is installed separately, it is possible to easily grasp the point where the leakage has occurred.

1 is a view schematically showing the inside and the outside of the pneumatic sensor means of various shapes used in the present invention,
Figure 2 is a schematic view showing the appearance of the cross-shaped air pressure sensor means used in the present invention,
Figure 3 is a schematic view showing the appearance of the uneven-shaped air pressure sensor means used in the present invention,
Figure 4 is a schematic view showing the appearance of another pneumatic pressure sensor means used in the present invention,
5 is a view schematically showing the configuration of a leak detection system having an air pressure sensor means according to a first embodiment of the present invention,
6 is a view schematically showing the configuration of a leak detection system having an air pressure sensor means according to a second embodiment of the present invention;
7 is a view schematically showing the configuration of a point-type leak detection system having an air pressure sensor means according to a third embodiment of the present invention;
8 is a view showing in detail the configuration of the central portion and the lower portion of FIG. 7;

Hereinafter, a preferred embodiment of a leak detection system having a pneumatic sensor means according to the present invention will be described with reference to the accompanying drawings. For reference, in the following description of the present invention, the terms referring to the components of the present invention are named in consideration of the functions of the respective components, and should not be understood as a meaning limiting the technical components of the present invention. Will be.

Referring to (a) to (e) of Figure 1, the air pressure sensor means of the first embodiment of the present invention is PVC, PET, PFA, ,ETFA, PTFA, resistant to acid, base, organic or oil components, A film 100 composed of PI-based resin components is used. To construct the sensor, fold into a rectangular shape (c) based on the leak detection hole (101), the reaction film (103), the reaction film attaching means (104) and the half point (102) where the leaked liquid permeates In order to seal the remaining edges, it is made into a tube.

If necessary, the film 100 can be rolled and sealed to produce a circular rod (pipe) shape (d), wherein the reaction film 103' is made by applying a material that reacts to a drug that requires detection.

On the other hand, for use in a warehouse where various chemicals are stored, it is possible to make sensor means to which various reaction membranes 103, 103', 103'', 103''' are applied as shown in (e).

FIG. 2 shows a structure capable of detecting a larger area than that of FIG. 1E, and when such a configuration is utilized, a leak detector that covers a large area can be made.

Figure 3 shows the uneven sensor means 100' different from the tubular or circular rod (pipe) type sensor described above. The uneven sensor means 100' has a first air inlet means 105 on the left, a second air inlet means 106 in the center, and a third air inlet means 107 on the right.

Here, the first sensor means 105-1 including the first air inlet means 105 has a plurality of reaction films 103, 103', and 103'' on three sides (left side, upper side, and right side). The left reaction membrane group 103L is formed. Here, the reaction film can be configured by the method described in FIG. 1. If necessary, a configuration in which the upper surface is excluded from the three sides (left side, upper side, and right side) is possible, and a plurality of reaction membranes may also be formed of one type of reaction membrane or multiple according to the situation of the detection zone where leakage detection is required. It can consist of a kind of reaction membrane.

On the other hand, the second sensor means 106-1 including the second air inlet means 106 has a central reaction membrane group 103C having a plurality of reaction membranes 103, 103', 103'' on the upper surface. Is formed. In consideration of the large area of the upper surface, the reaction film can be formed in a cross shape to widen the detectable range. It can be composed of various types of reaction membranes that can detect a wider range if necessary.

In addition, the third sensor means 107-1 including the third air inlet means 107 has a plurality of reaction membranes 103 for detecting various types of chemicals on three sides (left side, upper side, right side). 103', 103''), a right reaction membrane group 103R is formed. Here, the reaction film may be formed in a discontinuous configuration as shown in FIG. 1. In addition, if necessary, a plurality of reaction membrane groups may be configured to be unified with a reaction membrane that reacts to one type of chemical according to the situation and needs of the detection zone where leakage detection is required.

FIG. 4 is the same shape (100'') as the uneven sensor means 100' of FIG. 3 described above, but the left, center, and right reaction membrane groups 103L, 103C, and 103R have a band-shaped pattern. It shows what is being done. That is, the uneven sensor means 100 ″ has a first air inlet means 105 on the left, a second air inlet means 106 in the center, and a third air inlet means 107 on the right.

Here, the first sensor means 105-1 including the first air inlet means 105 has a plurality of reaction films 103, 103 ′, 103 ′ having a stripe pattern on three sides (left side, upper side, right side). Left reaction membrane group 103L with') is formed. Here, the reaction film may be configured in a band-like pattern by applying the method described in FIG. 1. If necessary, a plurality of band-shaped reaction membranes may be configured as one type of reaction membrane depending on the situation and needs of the detection zone requiring leakage detection.

Meanwhile, the second sensor means 106-1 including the second air inlet means 106 has reaction films 103 of the left reaction film group 103L of the first sensor means 105-1 on the upper surface. 103', 103'') are formed with a central reaction membrane group 103C having a plurality of reaction membranes 103, 103', 103'' in a band-shaped pattern, respectively. If necessary, the band-shaped pattern may be configured to be discontinuously connected to the left reaction membrane group 103L.

In addition, the third sensor means 107-1 including the third air inlet means 107 has a central reaction membrane group of the second sensor means 105-1 on three sides (left side, upper side, right side) ( The right reaction membrane group 103R is formed having a plurality of reaction membranes 103, 103', 103'' in a strip pattern connected to the reaction membranes 103, 103', 103'' of 103C), respectively. If necessary, the band-shaped pattern may be configured to be discontinuously connected to the central reaction membrane group 103C.

5 shows a leak detection system 200 using air pressure according to a first embodiment of the present invention.

The air pressure control system 210 is an air generator (202), an air pressure regulator (203) connected to the air pressure connecting means (207) to the air generator, the air pressure connecting device to the air pressure regulating device The air pressure distribution device (204) connected to (207), the air pressure distribution device connected to the air pressure distribution device (207) connected to the air pressure detection device (Pressure Sensor-1,-2,-3) and controls their operation It includes a controller (201).

In addition, a device (not shown) for filtering moisture contained in the air pressure generated by the air pressure generating device 202 may be included in the air pressure regulating device 203.

On the other hand, the air pressure sensing device 205 may be composed of one or a plurality of areas depending on the area where leakage detection is required, the sensor means group (100-2) through the air pressure connecting device 207 and the air inlet fastening means (206) ). The sensor means group may be installed in one or a plurality of groups depending on the area where leakage detection is required. Although not shown, when a plurality of sensor means groups 100-2 are installed, although not shown, information detected through the air pressure sensing device 205 and the control device 201 by dividing the installation area is an alarm device. It can be transmitted to the computer in the central control room through the network at the same time as it propagates through to check the leaked area.

6 shows a leak detection system 200 using air pressure according to a second embodiment of the present invention.

The air pressure control system 210 is an air generator (202), an air pressure regulator (203) connected to the air pressure connecting means (207) to the air generator, the air pressure connecting device to the air pressure regulating device The air pressure distribution device (204) connected to (207), the air pressure distribution device connected to the air pressure distribution device (207) connected to the air pressure detection device (Pressure Sensor-1,-2,-3) and controls their operation It includes a controller (201).

In addition, a device (not shown) for filtering moisture contained in the air pressure generated by the air pressure generating device 202 may be included in the air pressure regulating device 203.

On the other hand, the air pressure sensing device 205 may be composed of one or a plurality of areas depending on the area where the leak detection is required, the sensor means (100-3) through the air pressure connection device 207 and the air inlet fastening means (206') ). The air inlet fastening means 206' has a structure different from that of the air inlet fastening means 206 shown in FIG. 5 because it has to be fastened to the concave-convex sensor means 100-3 shown in FIG. . The sensor means 100-3 may be installed in an area requiring a relatively wide range of leak detection than the circular rod (pipe) type sensor means of FIG. 5. Although not shown, when leakage occurs, information sensed through the air pressure sensing device 205 and the control device 201 propagates through an alarm device and simultaneously detects whether leakage occurs through a computer installed in a central control room through a network. You can check.

In addition, when the air pressure detected by the air pressure detecting device 205 falls below a set value, it stops the operation of the air pressure generating device, so that it is possible to take inspection and follow-up actions according to leakage.

7 and 8 show a point-type leak detection system 300 using air pressure according to a third embodiment of the present invention.

The point type leak detection system 300 includes an upper case means 301, a pressure display means 302, a solar power generation means 303, a buzzer means 304, an air pressure control system 210', and a lower sensor means 310. ).

The air pressure control system 210' has a configuration similar to that shown in FIGS. 5 and 6, the control device 201, an air generator 202 operated under the control of the control device, and the control A pneumatic regulator (203) operating under the control of the device, a pneumatic distribution device (Distributor) 204 operating under the control of the control device, and a battery device that supplies power required for the operation of the pneumatic control device (303'), the electrical energy generated by the solar power generation means 303 is stored in the battery device 303' is connected to be used.

In addition, the pressure display means 302 is an A/D converter (analog to) the values provided by the air pressure distribution device (Distrirutor) 204 and the air pressure detection device (Pressure sensor) 205 connected to the control device 201 Digital Converter) (not shown).

In addition, the lower sensor means 310 is an air pressure sensor means having a reaction film 103 that dissolves in response to acids, bases, organics or oils without reacting to water or moisture on the bottom outer surface 305 of the point sensor device ( 306), an empty space 307 inside the floor and an air injection means 308 and a connection device 207 for supplying air pressure connecting the air distribution device 204.

Here, a device (not shown) for filtering moisture contained in the air pressure generated by the air pressure generator 202 may be included in the air pressure regulating device 203.

On the other hand, in the point-type leak detection system 300 shown in FIGS. 7 and 8, the air pressure sensing device 205 is fixed using a connection device 207 for supplying air pressure, or fixed by a separate fixing device (not shown). Can be used.

Although not shown, when leakage occurs, the depressurized pressure information of the air pressure sensing device 205 is recognized by the control device 201, and the alarm is propagated through the buzzer means 304, and is installed in the central control room through a wireless network. It can be transmitted to a computer to check whether leakage has occurred.

In addition, when the air pressure sensed by the air pressure detecting device 205 falls below a set value, the operation of the air pressure generating device is stopped, and a series of installations are performed by replacing the air pressure sensor means 306 and checking for leakage. To take follow-up measures.

As described above, although described with reference to preferred embodiments of the present invention, those skilled in the art variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You can understand that you can.

In addition, the drawing numbers described in the claims of the present invention are merely for clarity and convenience of explanation, and are not limited thereto. In the course of explaining the embodiment, the thickness of the lines or the size of components shown in the drawings, etc. May be exaggerated for clarity and convenience of description, and the above-described terms are terms defined in consideration of functions in the present invention, and may be changed according to the intention or custom of the user or operator. Should be made based on the contents throughout this specification.

The present invention can be installed and used around semiconductor manufacturing process lines as well as equipment and chemical storage tank facilities for manufacturing paints, paints, intermediates, and inks including petrochemicals, and in particular, storage of chemicals that require outdoor waterproofing. It can be used as a leak detection sensor system by installing and using it around the supporting facility (foundation) of the tank, delivery pump, and piping connection.

100: air pressure sensor film
100-1: tubular sensor means
100-2 (100-2a, 100-2b, 100-2c): circular rod (pipe) type sensor means
101: leak detection hole
102: pneumatic sensor resin folding line (tube type)
103, 103', 103'': reaction membrane
104: reaction membrane attachment means
105, 105-1: first air inlet means, first sensor means
106, 106-1: second air inlet means, second sensor means
107, 107-1: third air inlet means, third sensor means
206, 206': Air inlet fastening means
207: air pressure supply connection device
210, 210': Air pressure control system block
300: point type leak detection system
301: upper case means
302: pressure display means
303: solar power generation means
304: buzzer means
306: air pressure sensor means
310: lower sensor means

Claims (11)

Control device 201;
An air generating device 202 that generates air under the control of the control device 201;
An air pressure adjusting device 203 connected to the air generating device 202 and controlling air pressure under the control of the control device 201;
An air pressure distribution device 204 connected to the air pressure control device 203 and distributing air pressure;
An air pressure sensing device 205 connected to the air pressure distribution device 204 and sensing air pressure; And
An air inlet fastening means 206 connected to the air pressure sensing device 205 and connected to an air pressure sensor means that does not react to water but reacts only to acids, bases, organics and oils;
It includes,
The air pressure sensor means,
Uneven sensor means (100-3, 100-3') for the detection of chemicals or oils,
The uneven sensor means (100-3, 100-3'),
Leakage detection system using air pressure, characterized by selectively having a first sensor means having a first air inlet means, a second sensor means having a second air inlet means and a third sensor means having a third air inlet means ( 200).
According to claim 1, The air generating device 202, the air pressure regulating device 203, the air pressure distribution device 204, the air pressure detecting device 205 and the air injection port fastening means 206 to connect to each other Note that the leak detection system 200 using air pressure, characterized in that it further comprises a connecting device for supplying air pressure (207).
delete delete According to claim 1,
The uneven sensor means (100-3, 100-3'),
Air pressure characterized in that the first sensor means, the second sensor means and the third sensor means each have a plurality of reaction membranes (103, 103', 103'') for the detection of one or more chemicals or oils Leakage detection system using a (200).
delete The method of claim 5,
The uneven sensor means (100-3),
The reaction films (103, 103', 103'') do not react with water and dissolve by reacting only with acids, bases, organics and oils,
The first sensor means,
The left reaction membrane group 103L having the reaction membranes 103, 103', and 103'' is formed on three sides (left side, upper side, and right side),
The second sensor means,
A central reaction membrane group 103C having the reaction membranes 103, 103', 103'' is formed on the upper surface,
The third sensor means,
A leak detection system 200 using air pressure, characterized in that a right reaction membrane group 103R having the reaction membranes 103, 103', 103'' is formed on three sides (left, upper, and right sides).
The method of claim 5,
The uneven sensor means (100-3'),
The reaction films (103, 103', 103'') do not react with water and react only with acids, bases, organics and oils, dissolve and form a strip pattern,
The first sensor means,
The left reaction membrane group 103L having the reaction membranes 103, 103', and 103'' is formed on three sides (left side, upper side, and right side),
The second sensor means,
A central reaction membrane group 103C having the reaction membranes 103, 103', 103'' is formed on the upper surface,
The third sensor means,
A leak detection system 200 using air pressure, characterized in that a right reaction membrane group 103R having the reaction membranes 103, 103', 103'' is formed on three sides (left, upper, and right sides).
delete delete The method of claim 1, wherein when the air pressure sensed by the air pressure detecting device (205) falls below a set value, it is determined that leakage has occurred, activates the alarm device, and emphasizes the operation of the air pressure generating device. Used leak detection system (200).

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