Optical flaw detection positioning system for airtight chamber and use method of optical flaw detection positioning system

Abstract

The invention provides an optical flaw detection positioning system for an airtight chamber. The optical flaw detection positioning system comprises the airtight chamber, a pressurization module, a detection module and a walking mechanism, the pressurization module is used for increasing air pressure for the airtight chamber; the detection module comprises a camera, a light supplementing lamp and a color developing gas spraying device which are arranged in the airtight chamber as well as a video display and a system controller which are arranged outside the airtight chamber, the color developing gas spraying device is used for spraying color developing gas, and the camera, the light supplementing lamp and the color developing gas spraying device are electrically connected with the system controller; the camera is electrically connected with the view screen display; the camera, the light supplementing lamp and the developing gas spraying device are all arranged on the walking mechanism and driven by the walking mechanism to walk in the airtight chamber, and the walking mechanism is electrically connected with the system controller through an electric wire. The optical flaw detection positioning system for the airtight chamber solves the problems that in an airtight chamber in the prior art, personnel need to carry out flaw detection on each position through X rays, the workload is large, and the personnel are harmful.

Description

Technical Field

[0001] The present invention relates to the field of airtight chamber flaw detection, and specifically to an optical flaw detection and positioning system for airtight chambers. Background Art

[0002] Currently, sealed chambers need to achieve airtightness. Since airtight chambers are generally large in size, when there is air leakage or air seepage in the sealed chamber, it is often not easy to determine the specific location of the air leakage or air seepage. Currently, X-rays are generally used for flaw detection operations. When using X-rays for flaw detection, workers need to perform flaw detection operations on each position of the airtight chamber to determine the final location of air leakage or air seepage. The workload is large and it is harmful to personnel. Summary of the Invention

[0003] To solve the technical problem that the airtight chamber detection in the prior art requires workers to use X-rays to perform flaw detection on each position, with a large workload and being harmful to personnel, the present invention provides an optical flaw detection and positioning system for airtight chambers.

[0004] An optical flaw detection and positioning system for airtight chambers includes an airtight chamber, a pressurization module, a detection module, and a traveling mechanism; the pressurization module is used to increase the air pressure in the airtight chamber; the detection module includes a camera, a fill light, and a color display gas spraying device disposed inside the airtight chamber, and a video display and a system controller disposed outside the airtight chamber. The color display gas spraying device is used to spray color display gas. The camera, the fill light, and the color display gas spraying device are all electrically connected to the system controller, and the camera is electrically connected to the video display; the camera, the fill light, and the color display gas spraying device are all disposed on the traveling mechanism, and are driven by the traveling mechanism to travel inside the airtight chamber. The traveling mechanism is electrically connected to the system controller through an electric wire.

[0005] In a preferred embodiment of the optical flaw detection and positioning system for airtight chambers provided by the present invention, the color display gas spraying device includes a gas tank filled with color display gas. The outlet of the gas tank is connected to an electromagnetic valve through a trachea to form an air outlet, and the electromagnetic valve is electrically connected to the system controller through an electric wire.

[0006] In a preferred embodiment of the optical flaw detection and positioning system for airtight chambers provided by the present invention, the color display gas is a colored gas or colored mist.

[0007] In a preferred embodiment of the optical flaw detection and positioning system for airtight chambers provided by the present invention, the camera is a panoramic camera.

[0008] In a preferred embodiment of the optical flaw detection and positioning system for airtight chambers provided by the present invention, the pressurization module is a booster.

[0009] A method for using the optical flaw detection and positioning system for the airtight chamber as described above, comprising the following steps: S1: Control the traveling mechanism to travel to a location inside the airtight chamber through the system controller; S2: Start the pressurization module to increase the air pressure inside the airtight chamber to a preset value; S3: Turn off the pressurization module and let it stand for 1 to 5 minutes; S4: Control the supplementary light, the camera, and the color-developing gas ejection device to turn on through the system controller; S5: The camera takes pictures of the direction of the color-developing gas under the illumination of the supplementary light and transmits the captured images to the video display; S6: Observe the change in the direction of the color-developing gas in the video display to determine whether there is air leakage at this location in the airtight chamber; S7: Control the traveling mechanism to travel to another location inside the airtight chamber through the system controller, and repeat the steps of S2 to S6; S8: Continuously repeat the steps of S7 until every location inside the airtight chamber has been detected. Compared with the prior art, the optical flaw detection and positioning system for the airtight chamber provided by the present invention determines whether there is air leakage at a certain location in the airtight chamber by pressurizing the airtight chamber and then taking pictures with a camera and observing the change in the direction of the color-developing gas; by setting the system controller and the video display outside the airtight chamber, the staff can complete all detection operations outside the airtight chamber, avoiding being affected by the increased air pressure inside the airtight chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the optical flaw detection and positioning system for the airtight chamber provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0012] Please refer to Figure 1 , which is a schematic structural diagram of the optical flaw detection and positioning system for the airtight chamber provided by the present invention.

[0013] The optical flaw detection and positioning system for the airtight chamber includes an airtight chamber 1, a pressurization module 2, a detection module, and a traveling mechanism 4.

[0014] The pressurization module 2 is a supercharger. The main body of the supercharger is arranged outside the airtight chamber 1, and its outlet is connected to the inside of the airtight chamber 1 through a pipeline. The pressurization module 2 is used to increase the air pressure in the airtight chamber 1.

[0015] The detection module includes a video display 31 and a system controller 32 arranged outside the airtight chamber 1, and a camera 33, a fill light 34 and a color display gas ejection device 35 arranged inside the airtight chamber 1.

[0016] The camera 33, the fill light 34 and the color display gas ejection device 35 are all installed on the traveling mechanism 4. The traveling mechanism 4 is a traveling vehicle, which is electrically connected to the system controller 32 through an electric wire. The traveling vehicle can move back and forth, left and right in the airtight chamber 1 under the control of the system controller 32.

[0017] The color display gas ejection device 35 includes a gas tank filled with color display gas, and the color display gas is colored fog. The outlet of the gas tank is connected with an electromagnetic valve through a trachea to form an air outlet, and the air outlet is arranged on one side of the camera 33. The electromagnetic valve is electrically connected to the system controller 32 through an electric wire. The electromagnetic valve controls its own opening or closing through the system controller 32 to realize the ejection or stop of the colored fog.

[0018] The camera 33 is a 3D camera, which is electrically connected to the system controller 32 and the video display 31 respectively through electric wires. The camera 33 controls its own opening or closing through the system controller 32. The camera 33 is used to shoot the image of the changing direction of the colored display gas and display it through the video display 31.

[0019] The fill light 34 is arranged around the camera 33, and it is electrically connected to the system controller 32 through an electric wire. The fill light 34 controls its own opening or closing through the system controller 32. The irradiation direction of the fill light 34, the shooting direction of the camera 33 and the colored display gas ejection direction of the color display device 35 are all in the same direction.

[0020] The usage method of the above optical flaw detection and positioning system for the airtight chamber includes the following steps: S1: Control the traveling mechanism 4 to travel to a place inside the airtight chamber 1 through the system controller 32, and make the shooting direction of the camera 33, the irradiation direction of the fill light 34 and the colored display gas ejection direction of the color display gas ejection device 35 all face this place of the airtight chamber 1.

[0021] S2: Activate the pressurization module 2 to increase the air pressure in the airtight chamber 1 to a preset value, where the preset value of this air pressure ensures that the air pressure in the airtight chamber 1 is always higher than the external air pressure during the detection process.

[0022] S3: Turn off the pressurization module 2 and let it stand for 5 minutes. By standing still, it is avoided that the gas in the airtight chamber 1 is severely convected due to the movement of the traveling mechanism 4 and the pressurization of the pressurization module 2, which affects the judgment of the direction of the color-developing gas.

[0023] S4: Control the supplementary light 34, the camera 33, and the color-developing gas spraying device 35 to turn on through the system controller 32.

[0024] S5: The camera 33 takes pictures of the direction of the color-developing gas under the illumination of the supplementary light 34 and transmits the captured images to the video display 31.

[0025] S6: Observe the change in the direction of the color-developing gas in the video display 31 to determine whether there is air leakage or air seepage at that location of the airtight chamber 1. When there is damage at that location of the airtight chamber 1 resulting in air leakage or air seepage, since the air pressure inside the airtight chamber 1 is greater than the air pressure outside the airtight chamber 1, the gas inside the airtight chamber 1 will diffuse out through that location. The color-developing gas sprayed by the color-developing gas spraying device 35 will move towards that damaged location and diffuse out through that damaged location. If there is no air leakage or air seepage at that location of the airtight chamber 1, then the color-developing gas sprayed by the color-developing gas spraying device 35 will diffuse naturally or diffuse to other parts.

[0026] S7: Control the traveling mechanism 4 to travel to another location inside the airtight chamber 1 through the system controller 32, and make the shooting direction of the camera 33, the illumination direction of the supplementary light 34, and the color-developing gas spraying direction of the color-developing gas spraying device 35 all face that location of the airtight chamber 1, and repeat the steps of S2 to S6.

[0027] S8: Continuously repeat the steps of S7 until every location inside the airtight chamber 1 has been detected.

[0028] In other embodiments, the 3D camera can also be replaced with a panoramic camera. When using a 3D camera, the captured image data is 3D stereoscopic, which is more convenient for observing the direction of the color-developing gas; when using a panoramic camera, the observation effect is slightly more difficult than using a 3D camera, but a wider shooting angle can be obtained, and through the wider shooting angle, the number of repetitions in S7 above can be reduced, and the detection of every location of the airtight chamber 1 can be completed more quickly.

[0029] In other embodiments, the video display 31 is a computer with an image analysis program built therein. The program automatically analyzes and compares the direction of the color-developing gas in the images captured by the camera 33 to determine whether there is air leakage or air seepage at that location of the airtight chamber 1, achieving automation.

[0030] The above are only embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An optical flaw detection and positioning system for an airtight chamber, characterized in that: It includes an airtight chamber, a pressurization module, a detection module and a walking mechanism; the pressurization module is used to increase the air pressure in the airtight chamber; the detection module includes a camera, a fill light and a color-developing gas ejection device arranged inside the airtight chamber, and a video display and a system controller arranged outside the airtight chamber. The color-developing gas ejection device is used to eject color-developing gas. The camera, the fill light and the color-developing gas ejection device are all electrically connected to the system controller, and the camera is also electrically connected to the video display; the camera, the fill light and the color-developing gas ejection device are all arranged on the walking mechanism, and are driven by the walking mechanism to walk inside the airtight chamber. The walking mechanism is electrically connected to the system controller through an electric wire.

2. The optical flaw detection and positioning system for an airtight chamber according to claim 1, characterized in that: The color-developing gas ejection device includes a gas cylinder filled with color-developing gas. The outlet of the gas cylinder is connected with an electromagnetic valve through a trachea to form an air outlet, and the electromagnetic valve is electrically connected to the system controller through an electric wire.

3. The optical flaw detection and positioning system for an airtight chamber according to claim 2, characterized in that: The color-developing gas is colored mist.

4. The optical flaw detection and positioning system for the airtight chamber according to claim 2, characterized in that: The color-developing gas is a colored gas.

5. The optical flaw detection and positioning system for the airtight chamber according to claim 1, wherein: The camera is a panoramic camera.

6. The optical flaw detection and positioning system for the airtight chamber according to claim 1, wherein: The camera is a 3D camera.

7. The optical flaw detection and positioning system for an airtight chamber according to claim 1, characterized in that: The pressurization module is a supercharger.

8. A method for using an optical flaw detection and positioning system for an airtight chamber according to any one of claims 1-7, characterized in that: It includes the following steps: S1: Control the walking mechanism to walk to a place inside the airtight chamber through the system controller; S2: Start the pressurization module to increase the air pressure in the airtight chamber to a preset value; S3: Turn off the pressurization module and let it stand for 1 to 5 minutes; S4: Control the fill light, the camera and the color-developing gas ejection device to turn on through the system controller; S5: The camera shoots the movement direction of the color-developing gas under the illumination of the fill light and transmits the captured image to the video display; S6: Determine whether the airtight chamber leaks air at this place through the change of the movement direction of the color-developing gas in the video display; S7: Control the walking mechanism to walk to another place inside the airtight chamber through the system controller, and repeat the steps of S2 to S6; S8: Keep repeating the steps of S7 until every place inside the airtight chamber is detected.

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