Oil leakage detection sensor module

Abstract

To provide a leaked oil detection sensor module.SOLUTION: A leaked oil detection sensor module includes: a body in which the upper part is opened, a substrate, a transmission member and a fixed body are installed in the inner space, an installation hole where a cartridge is installed is provided in the bottom surface, and a connection part is provided on the side surface; a lid for closing the opened upper part of the body; a substrate in which a transmission part for generating light by power supply and a reception part for receiving deflected light are connected, and a microcomputer for analyzing the detected signal is installed; a cartridge which is detachably installed on the lower surface of the body, maintains an opaque state in oil non-absorption, absorbs leaked oil and simultaneously reacts with the absorbed oil and converts the state into transparent or semi-transparent, and can detect the oil; a flat-plate-like permeation member which is fixed and installed inside the body, and permeates the irradiated light; and a fixed body which is installed inside the body and fixes the transmission part for emitting light and a reception part for receiving the irradiated light while fixing the substrate and the permeation member.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an oil leakage detection sensor module. More specifically, it maintains an opaque state when not adsorbing oil, absorbs the leaked oil, and at the same time reacts with the absorbed oil to be converted into a transparent or translucent state, enabling the replacement of only the reaction material that can be used for oil leakage detection, or easily and conveniently replacing the entire cartridge with the reaction material after oil leakage detection and installing it, thereby reducing the oil leakage detection error rate to maximize reliability and enabling the reuse of the sensor module. The present invention relates to an oil leakage detection sensor module.

Background Art

[0002] Generally, various types of leak sensors for detecting water leakage and oil leakage are used when there is water leakage and oil leakage. Typically, a cable type leak sensor, a band type leak sensor, and a module type leak sensor can be mentioned. The cable type leak sensor is a leak detection sensor that detects the exposure of various liquids (such as water and oil) and accurately and quickly notifies the location where the liquid leaks.

[0003] The detection of water leakage and oil leakage can be confirmed by detecting, with a detection line, that a potential difference is generated due to the resistance of the leaked water or oil in the current flowing along the conducting wire. However, such a cable type leak sensor has a high installation cost, a fixed length of the sensor cable, and a narrow customer selection range.

[0004] In addition, when installing the sensor, a separate bracket must be used, so there are problems such as difficult installation and additional costs. It also takes a lot of time to remove the physical properties after detecting the physical properties, and it is difficult to connect to external devices.

[0005] On the one hand, when water touches an electric wire while current is flowing through the wire, the resistance value of a band type leak detection sensor changes, and the presence or absence of water leakage can be detected according to the change in the resistance value.

[0006] Such a band type leak detection sensor can detect water leakage over a large area at low cost and is easy to install. However, it has problems such as a high error occurrence rate due to high humidity or external impact, and it is impossible to easily confirm the exact water leakage position. Also, due to the lack of installation coordination, there is roughness in product installation.

[0007] In addition, there is a problem that the price is high compared to the performance. Installation is difficult because brackets for fixing to the floor need to be installed separately during installation, and there is a problem that there is no connection device other than a simple relay contact method when connecting to external devices.

[0008] A module type leak sensor positions a photosensor (light receiving part, light emitting part) inside a plastic case. In a state where no liquid is detected, the beam from the light emitting part is received by the light receiving part. However, when the beam from the light emitting part detects a liquid, the beam cannot reach the light receiving part due to a change in the refractive index (including reflection), so water leakage is detected based on the light receiving state. Such a module type leak sensor can detect low-cost water leakage risk parts, is easy to install, can give an alarm by itself regardless of peripheral devices, and has no error due to humidity. However, unlike the cable type, there is a problem that only the presence or absence of water leakage at a specific position can be confirmed, and there is a problem that it is difficult to connect to peripheral devices.

[0009] In addition, since a separate sensor fixing plan has to be planned, there is a problem that it takes a lot of time during product installation. Since only specific parts of the water leakage risk area can be detected, it is difficult to detect when the water leakage position changes, and there are problems such as difficulty in adjusting the distance between the bottom surface and the sensor.

[0010] In view of the problems of the conventional modular leak sensors described above, the applicant of the present application has received the registration of "Leak Sensor Using a Light Source" (hereinafter referred to as Patent Document 1), Korean Patent No. 1965866.

[0011] Although the "Leak Sensor Using a Light Source" of Patent Document 1 has the convenience of detecting oil leakage for all fluids, there is a problem that it cannot detect specific fluids by limitation.

[0012] In addition, in Patent Document 1, when a liquid having a certain viscosity contacts a transmissive member that transmits light, the liquid leaked on the surface adheres to the surface, so the surface of the lens is contaminated. Even if it is wiped clean to remove this, the liquid leaked on the surface remains, which affects the refractive index of light during the reuse of the leak sensor and causes an error.

Prior Art Documents

Patent Documents

[0013]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0014] The present invention has been made in view of the above-described conventional problems, and its object is to maintain an opaque state when no oil is adsorbed, but at the same time absorb the leaked oil and react with the absorbed oil to convert the state to transparent or translucent so that only the reaction material that can be detected can be replaced, or after detecting the oil leakage, it is possible to easily and conveniently replace and install the entire cartridge with the reaction material to reduce the oil leakage detection error rate, maximize the reliability, and provide an oil leakage detection sensor module that can reuse the sensor module.

Means for Solving the Problems

[0015] The above object is achieved by an oil leakage detection sensor module, which includes a main body with an open upper part, a substrate, a transmission member, and a fixing body installed in the inner space, an installation hole for installing a cartridge provided on the bottom surface, and a connecting part provided on the side surface; a lid for closing the upper part of the open main body; a substrate connected with a transmitting part that generates light by power supply and a receiving part that receives the refracted (including reflected) light, and a microcomputer for analyzing the detected signal is installed; a cartridge detachably installed on the lower surface of the main body, which maintains an opaque state when no oil is adsorbed, absorbs the leaked oil, and at the same time reacts with the absorbed oil to convert the state to transparent or translucent so that it can be detected; a flat transmission member fixedly installed inside the main body for transmitting the irradiated light; and a fixing body installed inside the main body for fixing the substrate and the transmission member while fixing the transmitting part that emits light and the receiving part that receives the irradiated light.

[0016] Further, a perspective window is installed in the mounting groove on the outer surface of the lid, a transmission hole for transmitting LED light is provided in the lid where the perspective window is installed, a plurality of LEDs are installed on the substrate, and it further includes a confirmation means for turning on the LEDs when detecting oil leakage, which is achieved by the oil leakage detection sensor module.

[0017] Moreover, it is achieved by an oil leakage detection sensor module, which further includes a filler installed in the space of the main body to absorb impact and prevent the substrate from floating.

[0018] Moreover, the cartridge is provided with an installation space portion for installing a reaction material inside, and a plurality of fluid movement grooves are provided at regular intervals around the lower opening so that the leaked oil can move to the reaction material side. A locking step portion is provided inside the opening, and it is configured to prevent the removal of the separation prevention plate. It includes a housing, a reaction material inserted into the fluid movement groove as an opaque material, which adsorbs oil and at the same time reacts with the adsorbed oil to change to transparent or translucent, and a separation prevention plate locked to the locking step portion to prevent the removal of the reaction material. It is achieved by an oil leakage detection sensor module.

[0019] Moreover, on the bottom surface of the main body, partition walls are provided at regular intervals with steps to separate and partition the cartridges, and installation holes are provided between the partition walls. It is achieved by an oil leakage detection sensor module.

Effects of the Invention

[0020] Such an invention of the present invention maintains an opaque state when the oil is not adsorbed, but can detect by changing to a transparent or translucent state by reacting with the adsorbed oil while absorbing the leaked oil. It is possible to replace only the reaction material or to easily and conveniently replace and install the entire cartridge with the reaction material after detecting the oil leakage, thereby maximizing the reliability by reducing the oil leakage detection error rate, and the sensor module can be reused. It is a very useful invention with such effects.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0022] Hereinafter, preferred embodiments of the present invention will be described in detail based on the accompanying drawings.

[0023] FIG. 1 is a perspective view showing the structure of an oil leakage detection sensor module to which the technology of the present invention is applied, FIG. 2 is an exploded perspective view showing the structure of an oil leakage detection sensor module to which the technology of the present invention is applied, and FIG. 3 is a cross-sectional view showing the structure of an oil leakage detection sensor module to which the technology of the present invention is applied. According to these figures, the oil leakage detection sensor module 1 of the present invention mainly includes a main body 40 provided with a substrate 10, a transmission member 20, and a fixing body 30 for fixing the substrate 10 and the transmission member 20 inside, a lid 60 coupled to the main body 40, and a cartridge 50 installed on the bottom surface of the main body 40.

[0024] The structure of the main body 40 has an open upper part, with the transmission member 20, the fixing body 30, and the substrate 10 installed in this order in the inner space 41. Steps are formed at regular intervals on the bottom surface, and a partition part 42 is provided. A number of installation holes 43 for installing the cartridge 50 are provided at regular intervals between the partition parts 42, and a connecting part 44 is provided on the side surface.

[0025] A lid 60 that closes the upper part of the opened main body 40 is screwed by bolts. Inside the main body 40, there are provided a light-emitting means installation groove 45 where a light-emitting means for generating light by power supply is installed, and a light-receiving means installation groove 46 where a light-receiving means for receiving refracted (including reflected) light is installed. The detected signal is transmitted to the microcomputer on the substrate 10.

[0026] At the lower end of the substrate 10 fixedly installed inside the main body 40, a flat transmissive member 20 made of any one of a glass material, a synthetic resin material, and an insulator and transmitting the irradiated light is installed.

[0027] On the other hand, inside the main body 40, a fixing body 30 for fixing the substrate 10 and the transmissive member 20 is installed, and it includes a light-emitting means for emitting light and a light-receiving means for receiving the irradiated light. The cartridge 50 is inserted into the installation hole 43 and detachably installed on the lower surface of the main body 40. It is configured to maintain an opaque state when not adsorbing oil, absorb the leaked oil, and at the same time react with the absorbed oil to be converted into a transparent or semi-transparent state, thereby realizing oil leakage detection.

[0028] As shown in FIG. 4, the structure of the cartridge includes a housing 51 that is detachable from the oil leakage detection sensor module, a reaction material 52 inserted inside the housing 51, and a detachment prevention plate 53 installed on the housing 51 to prevent the reaction material 52 from coming off.

[0029] The housing 51 is provided with an installation space portion 511 for installing the reaction material 52 inside, and a plurality of fluid movement grooves 512 through which the leaked oil can move to the reaction material 52 side are provided at regular intervals around the lower opening.

[0030] On the other hand, locking step portions 513 are provided inside at the ends of both sides of the housing 51 around the fluid movement groove 512 to prevent the detachment prevention plate 53 from coming off.

[0031] The reaction material 52 is formed by pressure-bonding powders and does not react with other liquids except oil. Further, the reaction material 52 is opaque when not adsorbed with oil, and simultaneously reacts with the adsorbed oil upon adsorption of the oil, converting to a transparent or translucent state. Therefore, since the amount of light (light quantity) emitted from the light-emitting means and received changes according to the state of the reaction material 52, the reaction material 52 is used for oil leakage detection.

[0032] The forming method is to put the raw material powder for manufacturing the reaction material 52 into a container and press and form it under high pressure. At this time, when heated at a constant temperature, the forming becomes easier.

[0033] As the reaction material 52, powdered aerosol is used, and the reaction material is formed by pressure-bonding powders. The reason for forming is to facilitate movement and storage by having a form.

[0034] The anti-detachment plate 53 has a structure in which a plurality of through holes 532 are provided at regular intervals in a flat plate 531 made of a metal material so that the leaked oil can be easily adsorbed by the reaction material 52.

[0035] Among metals, as the metal material used for manufacturing the anti-detachment plate 53, it is preferable to use a metal that does not generate rust. Further, since the metal used during the manufacture of the anti-detachment plate 53 does not react with oil, the stability of the anti-detachment plate 53 can be realized, and the generation of air can be prevented when the anti-detachment plate 53 is attached to the sensor.

[0036] The oil leakage detection sensor module 1 of the present invention having such a structure is installed on the ground or floor surface at the position where oil leakage occurs, as shown in FIG. 6.

[0037] When oil leakage occurs at the location where the oil leakage detection sensor module of the present invention installed as described above is located, oil seeps between the ground or the surface of an article and the main body, and when the oil enters the inside of the partition portion 42 on the lower bottom surface of the main body 40, it is blocked by the partition portion 42 and cannot move to the adjacent other partition portions 42. At this time, the oil is absorbed by the reaction material 52 of the cartridge 50.

[0038] On the other hand, in the cartridge 50, as shown in FIG. 6, the leaked oil is adsorbed by the reaction material through the lower part and the side surface of the housing 51. That is, it is adsorbed by the reaction material 52 through the through hole 532 of the anti-separation plate 53 installed on the bottom surface, and is also adsorbed by the reaction material 52 through the fluid movement groove 512 provided on the side surface of the housing 51.

[0039] When the reaction material 52 is not adsorbed with oil, it is opaque, and the light transmitted from the light emitting means irradiating the light installed in the sensor is blocked. Since the blocked light cannot be detected by the light receiving means provided in the oil leakage detection sensor, the light quantity cannot be measured by the light receiving means, and it is determined that no oil leakage has occurred.

[0040] However, while absorbing the leaked oil with the reaction material 52, it reacts with the absorbed oil, and the state is converted into a state where oil leakage can be detected (Detection), that is, a transparent or translucent state. Therefore, the light irradiated from the light emitting means is refracted (including reflection) by the oil, and detection becomes possible based on the detected light quantity.

[0041] As shown in FIG. 6, the detection method is that before the oil is adsorbed by the reaction material, all the light irradiated from the light emitting means is absorbed by the reaction material, so that the light reflected by the light receiving means cannot be detected. However, when the reaction material 52 absorbs the oil due to the leaked oil and at the same time reacts with the absorbed oil and is converted into a transparent or translucent state, the irradiated light passes through the reaction material and is reflected and refracted (including reflection) by the oil flowing on the bottom surface, and the light quantity is detected by the light receiving means, so it is detected that oil leakage has occurred.

[0042] On the other hand, when the reaction material 52 is converted into a transparent or translucent state to detect a leak, the leak (oil leakage) is confirmed using the leak confirmation means 70 based on the detected signal. The leak confirmation means 70 has a structure including an LED 72 connected to the substrate 10 and a perspective window 71 installed on the lid 60 that fixes the LED 72.

[0043] When the leak occurs, the LED 72 can be lit for visual confirmation. The lighting method of the LED 72 can be to connect one LED to one cartridge for operation, or when oil leakage is detected in one cartridge, the entire LED can be lit. The LED 72 is protected by the transparent window 71, and the substrate 10 is connected to an external control device via the connection part 44.

[0044] The present invention used as described above has the convenience that only the reaction material 52 can be easily and conveniently replaced and installed, or the entire cartridge 50 can be replaced and used.

[0045] On the other hand, in the present invention, although the embodiment in which the reaction material 52 reacts with oil to become transparent when adsorbing oil in an opaque state is described, the reaction material 52 can also be changed to one in which a state change occurs from a transparent state when not adsorbing oil to becoming opaque by reacting with oil simultaneously with oil adsorption.

Explanation of Reference Numerals

[0046] 10 Substrate 20 Transmissive member 30 Fixing body 40 Main body 41 Space 42 Partition part 43 Installation hole 44 Connection part 45 Light-emitting means installation groove 46 Light-receiving means installation groove 50 Cartridge 51 Housing 511 Installation space part 512 Fluid movement groove 52 Reaction material 53 Anti-separation plate 60 Lid

Claims

1. In an oil leakage detection sensor module, a main body with an open top, a substrate, a transmission member, and a fixing body installed in the inner space, an installation hole for installing a cartridge provided on the bottom surface, and a connecting portion provided on the side surface; a lid for closing the open top of the main body; a substrate to which a transmitting unit that generates light by power supply and a receiving unit that receives the refracted light are connected, and a microcomputer that analyzes the detected signal is installed; a cartridge detachably installed on the lower surface of the main body, maintaining an opaque state when not adsorbing oil, absorbing the leaked oil, and reacting with the absorbed oil to be converted into a transparent or translucent state so that detection is possible; a flat plate-shaped transmission member fixedly installed inside the main body and transmitting the irradiated light; a fixing body installed inside the main body for fixing the substrate and the transmission member, and fixing a transmitting unit that emits light and a receiving unit that receives the irradiated light; The oil leakage detection sensor module is characterized by comprising the above.

2. A perspective window is installed in the mounting groove on the outer surface of the lid, a transmission hole through which LED light passes is provided in the lid where the perspective window is installed, a plurality of LEDs are installed on the substrate, and the oil leakage detection sensor module according to claim 1, further comprising confirmation means for turning on the LEDs when leakage is detected.

3. The oil leakage detection sensor module according to claim 1, further comprising a filler installed in the space of the main body for absorbing impact and preventing the substrate from floating.

4. The oil leakage detection sensor module according to claim 3, wherein the filler is any one of a cured product obtained by injecting and curing a silicone resin liquid, a foamed foam having a spherical shape, and short fibers.

5. The cartridge is a housing provided with an installation space portion for installing a reaction material inside, a plurality of fluid movement grooves through which the leaked oil can move to the reaction material side are provided at regular intervals around the lower opening, and a locking step portion is provided inside the opening to prevent the detachment of the anti-detachment plate; a reaction material inserted into the fluid movement groove as an opaque material, adsorbing oil and reacting with the adsorbed oil to change to transparent or translucent; an anti-detachment plate locked to the locking step portion to prevent the detachment of the reaction material; The oil leakage detection sensor module according to claim 1 is characterized by comprising the above.

6. On the bottom surface of the main body, a partition wall portion that forms steps at regular intervals to separately partition the cartridge is provided, and installation holes are provided between the partition wall portions. The oil leakage detection sensor module according to claim 1, characterized in that.

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