KR102305289B1 - Housing for cctv camera and closed space monitoring system including the same - Google Patents

Abstract

Disclosed is a CCTV camera housing suitable for an environment full of dust containing oil (in case of catalyst replacement inside a reactor of a petrochemical plant, etc.). According to an embodiment of the present invention, the CCTV camera housing comprises: a main body having a space in which a camera is mounted, having the open front surface, and configured to spray air supplied from the outside toward the front surface; and a cover coupled to the front surface of the main body, wherein the cover has a lens hole disposed on an axis passing through the center of the camera lens in the center thereof and a flow path is formed on one side facing the space so that the air is sprayed in a spiral form toward the center of the lens hole.

Description

A housing for a CCTV camera and a closed space monitoring system including the same

The Disclosure relates to a housing for a CCTV camera. It also relates to a monitoring system for the purpose of determining the working conditions of a confined space.

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Korean Patent Application Laid-Open No. 10-2015-0110089, Korean Patent Publication No. 10-1736299, and Korean Patent Publication No. 10-1969054 each disclose a housing for a camera having a structure for spraying air in front of the camera lens. has been

Since the camera housings (hereinafter referred to as 'prior art') published in the above-mentioned publication form an air curtain using the outside air around the camera, when the amount of dust is small or the weight of the dust is light, the field of view of the camera is reduced. It functions to be properly secured, but there is a problem in that the function is not properly implemented in an environment full of dust containing oil (at the time of catalyst replacement, inside the reactor of a petrochemical plant, etc.).

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Meanwhile, the inside of the reactor used in the heavy oil DS process of the petrochemical process is filled with various oil dust and dust in a high temperature environment of 50 to 70 degrees. The inside of the reactor is in very poor condition, but the workers inside the reactor wear a double oxygen supply device (Air Line Mask), wireless communication equipment, and dust-proof work clothes, and then work in pairs. In the prior art, for continuity of field work, after 20 to 30 minutes of work, the workers continue to rotate and work.

In addition, in the conventional reactor operation, the movement of workers from the top to the bottom is vertical after fastening the safety ring with a winch. As such, in the prior art, for the replacement of the heavy oil DS process catalyst in the petrochemical process, the operator depends on the wireless communication and hand signal between the winch adjuster and the assistant when entering and exiting the reactor (enclosed space), so communication errors may occur. They are always exposed to possible serious casualties.

In addition, accurate data management during catalyst loading is insufficient, and it is necessary to directly check inside the reactor to check the progress of catalyst loading (Unloading/Loading) and check work quality, which causes delay in work and difficulty in securing work quality.

In addition, when moving up/down for a shift of workers in a confined space, there is a risk of human accidents due to safety accidents and falls due to being caught on the May Way. There is also a problem that work efficiency is also lowered.

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US 10-2015-0110089 A (2015.10.02. open) US 10-1736299 B1 (2017.05.16. Announcement) US 10-1969054 B1 (2019.04.16. Announcement)

It is to provide a housing for CCTV cameras that is suitable for an environment full of dust containing oil (in case of catalyst replacement, inside a reactor of a petrochemical plant, etc.).

In addition, it is to provide a closed space monitoring system including the housing for the CCTV camera described above.

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A housing for a CCTV camera according to an embodiment is provided with a space in which the camera is mounted therein, the front is open, and a body configured to spray air supplied from the outside in the front direction; and a cover coupled to the front surface of the body. The cover has a lens hole positioned on an axis passing through the center of the camera lens in its center, and air is directed toward the center of the lens hole on one side facing the space. A flow path is formed so as to be sprayed in a spiral shape.

In addition, the cover may include a plate in which the hole is formed; a plurality of blades each having a curved shape with a certain curvature, coupled to one side of the plate at regular intervals along the periphery of the lens hole to form the flow path; and a sealing ring coupled to the plurality of blades and in contact with the edge of the camera lens.

In addition, the body may include a base having a socket unit on one side thereof; a bracket coupled to the other side of the base and fixing the camera; and a cylinder having a smaller diameter than that of the base, one end of which is provided with a flange coupled to the base, and coupled to the other side of the base to surround the bracket.

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A closed space monitoring system according to an embodiment includes at least one CCTV camera installed inside the reactor in a state coupled to the housing for the CCTV camera described above; an air port for supplying air to the housing for the CCTV camera; A first monitor having an NVR, located at the top of the reactor, and outputting an image of the CCTV camera; and a second monitor having a viewer PC connected to the NVR, located in the on-site container, and outputting an image of the CCTV camera.

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The housing for a CCTV camera according to an embodiment receives air from the outside that is a certain distance away and sprays the air in the form of a spiral on the front of the camera lens through the cover. Accordingly, there is no fear of contamination of the inside by the ambient air of the camera, and it effectively blocks the adhesion of dust containing oil to the camera lens.

In addition, the housing for a CCTV camera according to the embodiment is easy to maintain (disassembly and assembly, internal cleaning, etc.) in terms of its structure.

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The closed space monitoring system according to the embodiment can acquire clean image information even in a dust-filled environment, and thus enables real-time monitoring of the work progress inside the reactor without entering or exiting the reactor, thereby reducing work progress and delay time. It minimizes and monitors the progress of catalyst replacement in real time, while allowing winch control and dense loader control to be performed.

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Figure 1 shows a state seen from a perspective view of a housing for a CCTV camera according to an embodiment.
Figure 2 shows a perspective view of the housing for a CCTV camera according to the disassembled embodiment.
Figure 3 shows a state in which the housing for a CCTV camera according to the embodiment of Figure 2 viewed from another angle.
4 shows a state in which the housing for a CCTV camera according to the embodiment of FIG. 1 is cut along line I-I.
5 shows the configuration and operation of the cover of FIG. 1 .
6 schematically shows the configuration of a closed space monitoring system according to an embodiment.
7 schematically shows a connection structure of a closed space monitoring system according to an embodiment.

Hereinafter, with reference to the accompanying drawings, a housing for a CCTV camera according to an embodiment and a closed space monitoring system according to the embodiment will be described in detail.

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Housing for CCTV cameras

1 shows a perspective view of a housing 300 for a CCTV camera according to an embodiment, and FIGS. 2 to 3 show a perspective view of a housing 300 for a CCTV camera according to an exploded embodiment. .

1 to 3, the housing 300 for a CCTV camera according to the embodiment (hereinafter referred to as 'the housing 300 for a CCTV camera') includes a body 100 and a cover 200 .

Inside the body 100, there is provided a space in which the camera CA (which may be designed in an explosion-proof structure) can be located, the front (based on the direction of FIG. 1 ) is open, and moisture is removed from the outside It is configured so that it can be sprayed in the front direction by receiving the supplied air.

As an example, referring to FIGS. 1 to 3 , the body 100 may include a base 110 , a bracket 120 , a gasket 130 , and a cylinder 140 .

The base 110 may be in the form of a disk, and a socket part 110 is provided on one side of the base 110 . The socket unit 111 is coupled to a power cable (not shown) for supplying power to the camera CA, a LAN cable (not shown) for providing wired Internet, and an air hose (not shown) for supplying air. In this case, the power cable, the LAN cable, and the air hose may have an integrated structure.

The bracket 120 is coupled to the other side of the base 110 via a mechanical element such as a bolt, and functions to fix the camera CA. The bracket 120 has a predetermined length and is composed of a stick part 121 that is padded on one side of the camera CA, and a fixing ring part 122 coupled to the stick part 121 to surround the circumference of the camera CA. can

A fitting hole 122a having the same shape as the cross-section of the stick part 121 is formed in the thickness region of the fixing ring 122, and at least two bolt holes 122b are formed in the width region. The bolt (or plunger) inserted into the bolt hole 122b presses the outside of the camera CA to firmly fix it to the fixing ring part 122 .

The cylinder 140 has a smaller diameter than the base 110 . A flange portion 141 coupled to one side of the base 110 is provided at one edge of the cylinder 140 . The cylinder 140 is coupled to the base 110 via a mechanical element such as a bolt, and surrounds the bracket 120 and the camera CA installed in the bracket 120 .

Meanwhile, the gasket 130 may be positioned between one side of the base 110 and the flange portion 141 of the cylinder 140 facing the base 110 so that the base 110 and the cylinder 140 are airtightly coupled. .

The body 100 composed of the base 110 , the bracket 120 , the gasket 130 , and the cylinder 140 is easy to manufacture due to its structure, and it is easy to disassemble and assemble.

The cover 200 is coupled to the open front surface of the body 100 to seal the internal space of the body 100 . When the body 100 is composed of the base 110 , the bracket 120 , the gasket 130 , and the cylinder 140 , the cover 200 is coupled to the other end of the cylinder 140 via a bolt or the like.

A lens hole 211 positioned on an axis passing through the center of the camera lens LZ is formed in the center of the cover 200 . In addition, a flow path is formed on one side of the cover 200 (the surface facing the body 100 ), and the aforementioned flow path is a spiral in which the air supplied from the body 100 is directed toward the center of the lens hole 211 . ) to be sprayed in the form of The spiral-shaped airflow uniformly and strongly protects all areas of the camera lens LZ, unlike the curtain-type airflows of the prior art.

4 shows a state in which the housing 300 for a CCTV camera according to the embodiment of FIG. 1 is cut along the line I-I, and FIG. 5 shows the configuration and operation of the cover 200 of FIG. 1 .

As an example, referring to FIGS. 4 to 5 , the cover 200 may include a plate 210 , a plurality of blades 220 , and a sealing ring 230 .

The plate 210 has a diameter corresponding to the diameter of the body 100 (cylinder 140). A lens hole 211 is formed in the center of the plate 210 .

The plurality of blades 220 are each bent to a predetermined curvature, and are coupled at regular intervals along the circumference of the lens hole 211 to one side (the surface facing the body 100) of the plate 210 . . That is, between the plurality of blades 220 is a flow path through which the air AR can pass.

When the number of the plurality of blades 220 is α, α may be in the range of 5 ≤ α ≤ 8. According to the experiment, when α is less than 5, the cohesive force of the air (AR) is weak and the shield function is not properly implemented. This occurred.

The sealing ring 230 is coupled to the plurality of blades 220 and is in close contact with the edge of the camera lens LZ. The sealing ring 230 firmly fixes the plurality of blades 220 and functions to block the air AR supplied from the body 100 from being directly introduced into the lens hole 211 .

The cover 200 composed of the plate 210 , the plurality of blades 220 and the sealing ring 230 is very easy to clean.

On the other hand, when the cover 200 is composed of a plate 210 , a plurality of blades 220 , and a sealing ring 230 , the cover 200 is provided in plurality and is positioned between the plurality of blades 220 . It may further include a check valve (not shown). The check valve (not shown) functions to block the inflow of dust into the body 100 .

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The housing 300 for the CCTV camera described above receives air from the outside that is a predetermined distance away and sprays the air in the form of a spiral on the front of the camera lens through the cover 200 . Accordingly, there is no fear of contamination of the inside by the ambient air of the camera, and it effectively blocks the adhesion of dust containing oil to the camera lens.

In addition, the housing 300 for a CCTV camera is easy to maintain (disassembly and assembly, internal cleaning, etc.) in terms of its structure.

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Confined space monitoring system

6 schematically shows the configuration of the enclosed space monitoring system 1 according to the embodiment, and FIG. 7 schematically shows the connection structure of the enclosed space monitoring system 1 according to the embodiment.

6 to 7, the closed space monitoring system 1 (hereinafter referred to as 'closed space monitoring system (1)') according to the embodiment is a CCTV camera 2, an airport 3, It includes a first monitor 4 and a second monitor 5 .

A plurality of CCTV cameras 2 are provided and installed inside the reactor. At this time, each of the plurality of CCTV cameras (2) is in a state coupled to the housing 300 for the CCTV camera described above. The CCTV camera 2 is preferably of an explosion-proof type.

The air port 3 is located outside the reactor, and supplies air to the CCTV camera 2 (the housing 300 for the CCTV camera) through the air line.

On the other hand, the air line may be further provided with a moisture remover 6 for removing moisture contained in the air.

The first monitor 4 is provided with an NVR for recording the video of the CCTV camera 2, and is located at the top of the reactor. The second monitor 5 has a viewer PC connected to the NVR, and is located in the field container. The first monitor 4 and the second monitor 5 function to output the image of the CCTV camera (2).

On the other hand, the UTP line connecting the CCTV camera 2 and the first monitor 4 (the second monitor 5) may further include an amplifier module 7 for removing noise from the image.

On the other hand, the closed space monitoring system (1) may further include a reel (8) capable of winding an air line and a UTP (Unshielded Twisted Pair Cable) line.

The closed space monitoring system 1 according to the above-described embodiment can acquire clean image information even in a dust-filled environment, and accordingly, it enables real-time monitoring of the work progress inside the reactor without entering and exiting the reactor, It minimizes work progress and delay time, and enables winch control and dense loader control while monitoring the progress of catalyst replacement in real time.

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Various expressions (terms, visualized images, etc.) used when describing an embodiment of the present disclosure (The Disclosure) are merely selected for the purpose of a tool to increase understanding of the technology.

In addition, due to circumstances, the present disclosure has been described by way of a limited number of embodiments, and those skilled in the art (those with ordinary skill in the art) can within the scope not departing from the technical spirit of the present disclosure based on the above-described embodiments. New embodiments may be devised.

Therefore, the claims of the present disclosure should not be limited by some expressions shown in the 'description of the invention' and 'drawings', but should be broadly interpreted based on the underlying technical idea contained throughout the specification.

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300... housing for CCTV cameras
--
100... body
110... bass
111... socket part
120... bracket
121... stick
122... fixing ring part / 122a... fitting hole / 122b... bolt hole
130... gasket
140... cylinder
141... Flange
200... cover
210... plate / 211... lens hole
220... blade
230... sealing ring
--
CA... Camera / LZ... Camera Lens / AR... Air

Claims (7)

a body having a space in which the camera is mounted therein, the front of which is open, and configured to spray air supplied from the outside in the front direction; and
Cover coupled to the front of the body - The cover has a lens hole positioned on an axis passing through the center of the camera lens in its center, and air is spiraled toward the center of the lens hole on one side facing the space. A flow path is formed to be sprayed in the form of (Spiral) - including;
The cover is
a plate in which the hole is formed;
a plurality of blades each having a curved shape with a predetermined curvature and coupled to one side of the plate at a predetermined interval along the circumference of the lens hole to form the flow path; and
A housing for a CCTV camera, comprising a; a sealing ring coupled to the plurality of blades and abutting against the edge of the camera lens. delete According to claim 1,
When the number of the plurality of blades is α, α is 5 ≤ α ≤ 8, characterized in that the range, CCTV camera housing. According to claim 1, wherein the cover,
A plurality of check valves are provided and positioned between the plurality of blades; the housing for a CCTV camera, characterized in that it further comprises. According to claim 1, wherein the body,
a base having a socket unit on one side;
a bracket coupled to the other side of the base and fixing the camera; and
A housing for a CCTV camera, characterized in that it includes; a cylinder having a smaller diameter than the base, a flange portion coupled to the base is provided at one end of the base, and the cylinder is coupled to the other side of the base to surround the bracket. According to claim 4, wherein the bracket,
a stick portion coupled to the other side of the base; and
A housing for a CCTV camera, characterized in that it includes; a fixing ring in which a fitting hole having the same shape as the cross-section of the stick is formed in a thickness region, and at least two bolt holes are formed in a width region. At least one CCTV camera installed inside the reactor in a state coupled to the housing for the CCTV camera according to any one of claims 1, 3 to 6;
an air port for supplying air to the housing for the CCTV camera;
A first monitor having an NVR, located at the top of the reactor, and outputting an image of the CCTV camera; and
A second monitor having a viewer PC connected to the NVR, located in the on-site container, and outputting the image of the CCTV camera; Containing, a closed space monitoring system.

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