Nuclear industry underwater camera with a sealed self-checking function

Abstract

The application discloses a nuclear industry underwater camera with a sealing self-checking function, which comprises a mounting frame, a fixing frame, a sealing unit, a shake prevention unit and a camera. The mounting frame is used for mounting and fixing the sealing unit and the shake prevention unit. The fixing frame is used for lifting the mounting frame and mounting and fixing the camera. The sealing unit is used for sealing detection of the camera, so that the camera is prevented from affecting shooting after entering water. The shake prevention unit is used for preventing shaking of the camera during shooting, so that a clearer picture is provided. The camera is used for underwater picture shooting. Before the camera enters water for shooting, sealing detection is performed through the sealing unit, so that equipment damage and unclear shooting pictures caused by water entering the camera for shooting are avoided. When the camera is shaken by water flow disturbance during underwater shooting operation, the camera is quickly reset through the shake prevention unit, so that the camera shoots a clearer picture, and staff can conveniently replace nuclear fuel.

Description

Technical Field

[0001] This invention relates to the field of underwater detection and monitoring technology, specifically to an underwater camera for the nuclear industry with a sealed self-test function. Background Technology

[0002] In the field of underwater detection and monitoring, especially in the nuclear industry environment, underwater cameras play a crucial role. Due to the special characteristics of the nuclear industry environment, such as high radiation, high pressure, and high corrosiveness, extremely high performance requirements are placed on underwater cameras.

[0003] In underwater environments, sealing performance is fundamental to protecting the internal electronic components of a camera from moisture corrosion and external pressure damage. Traditional underwater camera sealing designs often employ static sealing methods such as rubber gaskets and O-rings. These methods perform well in general underwater environments, but in the high-pressure and highly corrosive environments of the nuclear industry, the sealing effect is easily affected, leading to an increased risk of leakage.

[0004] Meanwhile, during underwater filming, the footage often shakes due to factors such as water flow and camera movement, affecting the quality of observation. For underwater cameras in the nuclear industry, image stabilization is particularly important, as any slight shaking can lead to the loss or misjudgment of critical data. In nuclear industry applications, the complexity of water quality and the effects of radiation make cleaning issues more prominent. Traditional cleaning methods often involve manually removing the camera and wiping it clean, but these methods are inefficient and affect the camera's filming progress and image acquisition.

[0005] Therefore, the sealing performance, image stabilization performance, and cleaning ability of underwater cameras are key factors affecting the long-term stable operation and image quality of the cameras. Summary of the Invention

[0006] The purpose of this invention is to provide a nuclear industry underwater camera with a sealing self-test function to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] The nuclear industry underwater camera with sealing self-test function includes a mounting frame, a fixing frame, a sealing unit, a stabilization unit, and a camera. The mounting frame is fixedly installed on a lifting platform, the fixing frame is fixedly installed on the lifting platform, the sealing unit is fixedly connected to the mounting frame, and the sealing unit has the functions of self-cleaning and sealing the camera. The stabilization unit is fixedly installed inside the sealing unit and has the function of preventing the camera from shaking. The camera is fixedly connected to the stabilization unit and the fixing frame.

[0009] The mounting bracket is used to install and fix the sealing unit and the image stabilization unit. The mounting bracket is used for raising and lowering the mounting bracket and fixing the camera. The sealing unit is used for sealing the camera to prevent water from affecting the shooting. The image stabilization unit is used to prevent shaking during the camera shooting process and provide a clearer picture. The camera is used for underwater shooting. Before the camera is submerged in water to shoot, the sealing unit is used to check its sealing performance to prevent water from entering the camera and causing damage to the equipment and unclear images. When the camera shakes due to water currents during underwater shooting, the image stabilization unit quickly resets the camera, so that the camera can shoot a clearer picture, which is convenient for the staff to replace the nuclear fuel.

[0010] Furthermore, the sealing unit includes an air pump, a fixed cylinder, a rotating cylinder, a quartz block, a telescopic spring, an electric telescopic rod, a moving rod, a cleaning ring, and a photoresistor. The air pump is fixedly installed on the side surface of the mounting frame. The fixed cylinder consists of an outer cylinder and an inner cylinder, which are fixedly installed on the inner surfaces of both ends of the mounting frame. The air pump is connected to the cavity between the inner and outer cylinders of the fixed cylinder via a pipe. The quartz block is fixedly installed at both ends of the cavity of the fixed cylinder. The rotating cylinder is rotatably installed in the cavity of the fixed cylinder. One end of the rotating cylinder is fixedly connected to the quartz block via a telescopic spring. The fixed end of the electric telescopic rod is fixedly installed parallel to the horizontal axis on the outer surface of one side of the mounting frame. The telescopic end of the electric telescopic rod is vertically fixedly connected to the end of the moving rod away from the ground. The other end of the moving rod is fixedly connected to the cleaning ring. The cleaning ring is slidably installed on the outer surfaces of the fixed cylinder and the rotating cylinder. A layer of bristles is attached to the inner surface of the cleaning ring. The photoresistor is electrically connected to the quartz block. Multiple sets of the photoresistors are fixedly connected to the anti-shake unit.

[0011] Before underwater filming, the air pump is activated via the controller, introducing a measured amount of gas into the inner cavity of the fixed cylinder. Under air pressure, the rotating cylinder rotates along the inner cavity of the fixed cylinder until the other end of the rotating cylinder re-enters the inner cavity, forming a closed space. At this point, the rotating cylinder, under air pressure, contacts and compresses the quartz block. If the rotating cylinder detaches from the fixed cylinder, the extension spring contracts, pulling the rotating cylinder back to its initial position. When the cylinder no longer forms a sealed cavity with the fixed cylinder, air leakage occurs at the connection point, indicating poor sealing. This process performs a self-check of airtightness. If the rotating cylinder does not detach from the fixed cylinder, the airtightness is good, and the cylinder is lowered underwater for underwater filming operations. Under stable air pressure, the fixed cylinder pushes the rotating cylinder to compress the quartz block, causing the quartz block to generate current. This current is transmitted to multiple photoresistors, which detect the light intensity and convert it into resistance values, feeding this information back to the controller. When the resistance values ​​of the multiple photoresistors increase, it indicates that the light intensity transmitted to the fixed cylinder has decreased, meaning that impurities have adhered to the outer surfaces of the fixed and rotating cylinders, affecting the illumination and thus the camera's image. When the resistance value of the photoresistors exceeds a set value, the controller sends current to the electric telescopic rod, causing it to move the moving rod. This, in turn, causes the cleaning ring to wipe the outer surfaces of the fixed and rotating cylinders back and forth, scraping away the adhered impurities and preventing them from affecting the camera's image.

[0012] Furthermore, the image stabilization unit includes an adjustment wheel, a mounting plate, a sealed box, an arc-shaped column, a coil, a fixed plate, a rotating plate, a cylinder, a moving block, a push rod, and a buffer spring. Multiple sets of photoresistors are uniformly fixedly mounted on the surface of the mounting plate. The adjustment wheel is rotatably mounted on the inner surfaces of both ends of the inner cylinder of the fixed cylinder. A mounting plate is fixedly connected between two adjustment wheels. The surface of the mounting plate is provided with a cylindrical groove. The sealed box is fixedly mounted on the mounting plate. One end of the arc-shaped column is fixedly mounted on the inner surface of the sealed box near the camera, and the other end is fixedly connected to the fixed plate. The coil is uniformly wound on the arc-shaped column. The fixed plate is fixedly mounted on... Inside the enclosed box, one end of the rotating plate is rotatably mounted on a cylinder, and the other end is fitted onto the outer surface of an arc-shaped cylinder. A conductive ring is provided at the contact end between the rotating plate and the arc-shaped cylinder. The rotating plate is slidably connected to the arc-shaped cylinder through the conductive ring. The cylinder is fixedly installed inside the enclosed box. One end of the moving block is fixedly connected to the end of the rotating plate near the camera, and the other end is fixedly connected to one end of the push rod. The other end of the push rod is slidably connected to a cylindrical groove in the mounting plate. The enclosed box has a rectangular through groove, and the moving block is slidably installed in the rectangular through groove of the enclosed box. One end of the buffer spring is fixedly connected to the push rod, and the other end is fixedly connected to the camera lens.

[0013] When filming underwater, the refueling process disturbs the water. Pressure sensors detect the impact of the water flow on the rotating and fixed cylinders. If the impact force is below a preset value, it is transmitted to the mounting plate, which, under the action of a push rod, compresses a buffer spring. The spring's restoring force absorbs the impact, preventing lens shake. When the pressure sensor detects that the impact force exceeds the preset value, the buffer spring is compressed and pulls the push rod, causing the moving block to move outwards from the enclosed box. This causes the rotating plate to rotate along the cylinder and arc-shaped column, reducing the angle between the rotating plate and the fixed plate, thus shifting the lens. To prevent shake, the controller applies a positive current to the coil, making the electromagnet on the rotating plate and the magnet on the fixed plate have the same polarity. As the angle between the rotating plate and the fixed plate decreases, the number of effective coils decreases, resulting in lower resistance and increased current. This increases the magnetism of the electromagnet on the rotating plate and the repulsive force between it and the magnet on the fixed plate, causing the rotating plate to reset. This, in turn, moves the moving block into the enclosed box, reducing the pressure on the buffer spring. Simultaneously, the corresponding buffer spring on the other end is compressed, pushing the push rod and moving the moving block into the enclosed box, increasing the angle between the rotating plate and the fixed plate. The controller then supplies a reverse current to the coil, causing the electromagnet on the rotating plate and the magnet on the fixed plate to have opposite polarities. Before the rotating plate begins to rotate, the mutual attraction between the rotating plate and the fixed plate resists the thrust from the buffer spring, causing the buffer spring to quickly reset. Together, they resist the impact of the water flow, preventing camera lens shake and improving the camera's image capture.

[0014] Furthermore, the rotating cylinder is 4 / 5 cylindrical, and the fixed cylinder is 1 / 2 cylindrical.

[0015] When filming on the water surface, sealing is not required. Under normal conditions, 4 / 5 of the rotating cylinder can shield the top of the camera, preventing dust from accumulating inside the camera over a long period of time and affecting its lifespan. At the same time, when the rotating cylinder rotates under good sealing conditions, the contact surface between the rotating cylinder and the fixed cylinder scrapes off the impurities attached to the surface during underwater operations through friction, improving the self-cleaning effect.

[0016] Furthermore, both the fixed cylinder and the rotating cylinder are made of transparent glass.

[0017] Because less light is lost when passing through glass, it can retain the details and colors of the scene to the maximum extent, making the images captured by the camera clearer and brighter. At the same time, transparent glass has stable optical properties and is not easily deformed by factors such as temperature and humidity changes, thereby reducing image distortion problems caused by lens distortion.

[0018] Furthermore, the surface of the fixed plate is uniformly provided with multiple sets of magnets, and the surface of the rotating plate is provided with multiple sets of electromagnets that cooperate with the magnets along the rotation arc of the rotating plate.

[0019] In order to maximize the repulsive or attractive force between the electromagnet and the magnet during the rotation of the rotating plate, and to quickly reset the buffer spring, thereby avoiding large lens shake that would affect the imaging effect.

[0020] Furthermore, the camera surface is coated with an anti-radiation coating.

[0021] To prevent radiation from damaging cameras and affecting their lifespan when conducting underwater filming in the nuclear industry.

[0022] Furthermore, thin-film pressure sensors are attached to the outer surfaces of the fixed cylinder and the rotating cylinder, and the pressure sensors are electrically connected to an external controller. The photoresistor is also electrically connected to the external controller.

[0023] In order to collect whether the water flow impact force exceeds the preset value, the controller determines whether to energize the coil, thereby changing the angle between the rotating plate and the fixed plate to realize the rapid reset of the buffer spring to resist the water flow impact force and improve the imaging effect. At the same time, in order to realize the device's rapid automatic response, the device's automation and efficiency capabilities are achieved.

[0024] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention determines poor sealing by disengaging the rotating cylinder from the fixed cylinder in the sealing unit, thereby achieving the effect of airtightness self-test. If the rotating cylinder does not disengage from the fixed cylinder, it proves that the airtightness is good. Under the action of air pressure, the rotating cylinder squeezes the quartz block to generate current. The current is transmitted to multiple photoresistors. The changes in the structure of the photoresistors determine whether the impurities attached to the outer surfaces of the fixed cylinder and the rotating cylinder affect the illumination. When the resistance value of the photoresistors exceeds the set value, the cleaning ring wipes the outer surfaces of the fixed cylinder and the rotating cylinder back and forth to remove the attached impurities, thereby avoiding affecting the camera's image.

[0025] This invention utilizes a thin-film pressure sensor in the anti-shake unit to detect when the water flow impact force exceeds a preset value. When this occurs, current is applied to the coil, causing the electromagnet on the rotating plate and the magnet on the fixed plate to have the same or opposite polarities. This reduces the angle between the rotating and fixed plates, increasing the repulsive or attractive force between them. The rotating plate then resets, causing the moving block to move into the enclosed box, reducing the pressure on the buffer spring. Simultaneously, the buffer spring on the other end is compressed, increasing or decreasing the angle between the rotating and fixed plates. The controller then applies current to the coil, changing the polarity of the electromagnet on the rotating plate. This counteracts the thrust from the buffer spring before the rotating plate begins to rotate, allowing the buffer spring to quickly reset. Together, they resist the water flow impact force, preventing camera lens shake and improving the camera's image capture performance. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a schematic diagram of the overall appearance structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the installation relationship between the image stabilization unit of the present invention and the camera;

[0029] Figure 3 This is a schematic diagram of the front view structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the installation relationship between the fixed cylinder, the rotating cylinder, and the cleaning ring of the present invention;

[0031] Figure 5 This is a schematic diagram of the internal structure of the fixed cylinder of the present invention;

[0032] Figure 6 This is a schematic diagram of the structure of the image stabilization unit of the present invention;

[0033] Figure 7 This is a schematic diagram of the internal structure of the enclosed box of the present invention;

[0034] In the diagram: 1. Mounting bracket; 2. Fixing bracket; 3. Sealing unit; 31. Air pump; 32. Fixing cylinder; 33. Rotating cylinder; 34. Quartz block; 35. Telescopic spring; 36. Electric telescopic rod; 37. Moving rod; 38. Cleaning ring; 39. Photoresistor; 4. Anti-shake unit; 41. Adjusting wheel; 42. Mounting plate; 43. Enclosed box; 44. Arc-shaped column; 45. Coil; 46. Fixing plate; 47. Rotating plate; 48. Cylinder; 49. Moving block; 410. Push rod; 411. Buffer spring; 5. Camera. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] The present invention provides the following technical solution:

[0037] like Figure 1 , 2 As shown, a nuclear industry underwater camera with a sealing self-test function includes a mounting frame 1, a fixing frame 2, a sealing unit 3, a stabilization unit 4, and a camera 5. The mounting frame 1 is fixedly installed on the lifting platform, the fixing frame 2 is fixedly installed on the lifting platform, the sealing unit 3 is fixedly connected to the mounting frame 1, and the sealing unit 3 has the functions of self-cleaning and sealing the camera 5. The stabilization unit 4 is fixedly installed inside the sealing unit 3 and has the function of preventing the camera 5 from shaking. The camera 5 is fixedly connected to the stabilization unit 4 and the fixing frame 2.

[0038] Mounting bracket 1 is used for mounting and fixing sealing unit 3 and anti-shake unit 4. Fixing bracket 2 is used for raising and lowering mounting bracket 1 and mounting and fixing camera 5. Sealing unit 3 is used for sealing detection of camera 5 to prevent camera 5 from being affected by water entry. Anti-shake unit 4 is used to prevent camera 5 from shaking during shooting and to provide clearer images. Camera 5 is used for underwater shooting. Before camera 5 enters the water to shoot, sealing unit 3 is used to check its sealing performance to prevent damage to equipment and unclear images caused by water entry. When camera 5 is shaken by water flow during underwater shooting, anti-shake unit 4 quickly resets the camera, so that camera 5 can shoot clearer images, which is convenient for staff to replace nuclear fuel.

[0039] like Figure 2 , 3As shown in Figures 4 and 5, the sealing unit 3 includes an air pump 31, a fixed cylinder 32, a rotating cylinder 33, a quartz block 34, a telescopic spring 35, an electric telescopic rod 36, a moving rod 37, a cleaning ring 38, and a photoresistor 39. The air pump 31 is fixedly installed on the side surface of the mounting bracket 1. The fixed cylinder 32 consists of an outer cylinder and an inner cylinder, and is fixedly installed on the inner surfaces of both ends of the mounting bracket 1. The air pump 31 is connected to the cavity between the inner and outer cylinders of the fixed cylinder 32 through a pipe. The quartz block 34 is fixedly installed at both ends of the cavity of the fixed cylinder 32. The rotating cylinder 33 is rotatably installed on the fixed cylinder 32. The cavity has a rotating cylinder 33, one end of which is fixedly connected to a quartz block 34 via a telescopic spring 35. The fixed end of the electric telescopic rod 36 is fixedly installed on the outer surface of one side of the mounting bracket 1 parallel to the horizontal axis. The telescopic end of the electric telescopic rod 36 is vertically fixedly connected to the end of the moving rod 37 away from the ground. The other end of the moving rod 37 is fixedly connected to a cleaning ring 38. The cleaning ring 38 is slidably installed on the outer surfaces of the fixed cylinder 32 and the rotating cylinder 33. A layer of bristles is attached to the inner surface of the cleaning ring 38. The photoresistor 39 is electrically connected to the quartz block 34. Multiple sets of photoresistors 39 are fixedly connected to the anti-shake unit 4.

[0040] Before underwater filming, the controller starts the air pump 31, introducing a fixed amount of gas into the inner cavity of the fixed cylinder 32. Under the pressure of the air, the rotating cylinder 33 rotates along the inner cavity of the fixed cylinder 32 until the other end of the rotating cylinder 33 re-enters the inner cavity of the fixed cylinder 32, forming a closed space. At this time, the rotating cylinder 33 contacts and compresses the quartz block 34 under the pressure of the air. If the rotating cylinder 33 detaches from the fixed cylinder 32, the extension spring 35 contracts and pulls the rotating cylinder 33 back to its initial position. When it no longer forms a sealed cavity with the fixed cylinder 32, air leakage occurs at the connection between the rotating cylinder 33 and the fixed cylinder 32, resulting in poor sealing. This achieves the effect of airtightness self-check. If the rotating cylinder 33 does not detach from the fixed cylinder 32, it proves that the airtightness is good, and the machine descends underwater for underwater filming operations. Under stable air pressure, the fixed cylinder 32 pushes the rotating cylinder 33 to squeeze the quartz block 34, causing the quartz block 34 to generate current. The current is transmitted to multiple photoresistors 39. The photoresistors 39 detect the light intensity and convert it into a resistance value, which is fed back to the controller. When the resistance value of the multiple photoresistors 39 increases, it indicates that the light intensity transmitted to the fixed cylinder 32 has decreased, which means that impurities have adhered to the outer surfaces of the fixed cylinder 32 and the rotating cylinder 33, affecting the illumination and thus affecting the camera's image. When the resistance value of the photoresistors 39 exceeds the set value, the controller sends current to the electric telescopic rod 36, causing the electric telescopic rod 36 to push the moving rod 37 to move. This causes the cleaning ring 38 to wipe the outer surfaces of the fixed cylinder 32 and the rotating cylinder 33 back and forth, scraping off the adhered impurities and thus preventing them from affecting the camera's image.

[0041] like Figure 2 , 6As shown in Figure 7, the image stabilization unit 4 includes an adjustment wheel 41, a mounting plate 42, a sealed box 43, an arc-shaped column 44, a coil 45, a fixed plate 46, a rotating plate 47, a cylinder 48, a moving block 49, a push rod 410, and a buffer spring 411. Multiple sets of photoresistors 39 are uniformly fixedly mounted on the surface of the mounting plate 42. The adjustment wheel 41 is rotatably mounted on the inner surfaces of both ends of the inner cylinder of the fixed cylinder 32. The mounting plate 42 is fixedly connected between two adjustment wheels 41. The surface of the mounting plate 42 is provided with a cylindrical groove. The sealed box 43 is fixedly mounted on the mounting plate 42. One end of the arc-shaped column 44 is fixedly mounted on the inner surface of the sealed box 43 near the camera 5, and the other end is fixedly connected to the fixed plate 46. The coil 45 is uniformly wound around the arc-shaped column 44. The fixed plate 46... The rotating plate 47 is fixedly installed inside the enclosed box 43. One end of the rotating plate 47 is rotatably mounted on the cylinder 48, and the other end is sleeved on the outer surface of the arc-shaped column 44. A conductive ring is provided at the contact end between the rotating plate 47 and the arc-shaped column 44. The rotating plate 47 is slidably connected to the arc-shaped column 44 through the conductive ring. The cylinder 48 is fixedly installed inside the enclosed box 43. One end of the moving block 49 is fixedly connected to the end of the rotating plate 47 near the camera 5, and the other end is fixedly connected to one end of the push rod 410. The other end of the push rod 410 is slidably connected to the cylindrical groove in the mounting plate 42. The enclosed box 43 has a rectangular through groove. The moving block 49 is slidably installed in the rectangular through groove of the enclosed box 43. One end of the buffer spring 411 is fixedly connected to the push rod 410, and the other end is fixedly connected to the lens of the camera 5.

[0042] When filming underwater, the nuclear fuel replacement process disturbs the water. A thin-film pressure sensor detects the impact force of the water flow on the rotating cylinder 33 and the fixed cylinder 32. If the impact force does not exceed a preset value, the water flow impact force is transmitted to the mounting plate 42, which, under the action of the push rod 410, compresses the buffer spring 411. The buffer spring 411's own restoring force absorbs the water flow impact force, thus preventing lens shake. When the thin-film pressure sensor detects that the water flow impact force exceeds the preset value, the buffer spring 411 is compressed and pulls the push rod 410, causing the moving block 49 to move outwards from the enclosed box 43. This causes the rotating plate 47 to rotate along the cylinder 48 and the arc-shaped column 44, reducing the angle between the rotating plate 47 and the fixed plate 46, causing lens shift. To prevent shake, the controller supplies a positive current to the coil 45, making the electromagnet on the rotating plate 47 and the magnet on the fixed plate 46 have the same polarity. As the angle between the rotating plate 47 and the fixed plate 46 decreases, the effective coil 45 becomes less, resulting in a lower resistance and an increased current. This increases the magnetism of the electromagnet on the rotating plate 47 and the repulsive force between it and the magnet on the fixed plate 46, causing the rotating plate 47 to reset. This, in turn, moves the moving block 49 into the enclosed box 43, reducing the pressure on the buffer spring 411. Simultaneously, the corresponding buffer spring 411 is pressed against the push rod 410, causing the moving block 49 to move into the enclosed box 43, increasing the angle between the rotating plate 47 and the fixed plate 46. The controller then supplies a reverse current to the coil 45, causing the electromagnet on the rotating plate 47 and the magnet on the fixed plate 46 to have opposite polarities. Before the rotating plate 47 begins to rotate, the mutual attraction between the rotating plate 47 and the fixed plate 46 resists the thrust from the buffer spring 411, causing the buffer spring 411 to quickly reset. This collectively resists the impact of the water flow, preventing camera lens shake and improving the image capture effect of the camera 5.

[0043] like Figure 5 As shown, the rotating cylinder 33 is a 4 / 5 cylindrical shape, and the fixed cylinder 32 is a 1 / 2 cylindrical shape.

[0044] When performing video recording operations on the water surface, sealing is not required. Under normal conditions, the 4 / 5 rotating cylinder 33 can shield the top of the camera 5, preventing dust from accumulating inside the camera 5 over a long period of time and affecting its service life. At the same time, when the rotating cylinder 33 rotates under good sealing conditions, the contact surface at the connection between the rotating cylinder 33 and the fixed cylinder 32 scrapes off the impurities attached to the surface during underwater operations through friction, improving the self-cleaning effect.

[0045] like Figure 4 As shown, both the fixed cylinder 32 and the rotating cylinder 33 are made of transparent glass.

[0046] Because less light is lost when passing through glass, the details and colors of the scene are preserved to the maximum extent, making the image captured by camera 5 clearer and brighter. At the same time, transparent glass has stable optical properties and is not easily deformed by factors such as temperature and humidity changes, thereby reducing image distortion caused by lens distortion.

[0047] like Figure 7 As shown, multiple sets of magnets are evenly arranged on the surface of the fixed plate 46, and multiple sets of electromagnets that cooperate with the magnets along the rotation arc of the rotating plate 47 are arranged on the surface of the rotating plate 47.

[0048] In order to maximize the repulsive or attractive force between the electromagnet and the magnet during the rotation of the rotating plate 47, and to quickly reset the buffer spring 411, thereby avoiding large lens shake that would affect the imaging effect.

[0049] like Figure 2 As shown, the surface of camera 5 is coated with an anti-radiation coating.

[0050] In order to prevent radiation from damaging camera 5 and affecting its service life when conducting underwater photography in the nuclear industry.

[0051] like Figure 4 As shown, thin-film pressure sensors are attached to the outer surfaces of the fixed cylinder 32 and the rotating cylinder 33. The pressure sensors are electrically connected to an external controller, and the photoresistor 39 is electrically connected to the external controller.

[0052] In order to collect whether the water flow impact force exceeds the preset value, the controller determines whether to energize the coil 45, thereby changing the angle between the rotating plate 47 and the fixed plate 46 to realize the rapid reset of the buffer spring 411 to resist the water flow impact force and improve the imaging effect. At the same time, in order to realize the rapid automatic response of the device, the device can achieve automation and high efficiency.

[0053] Working principle of the invention:

[0054] Before underwater filming, the controller starts the air pump 31, introducing a fixed amount of gas into the inner cavity of the fixed cylinder 32. Under the pressure of the air, the rotating cylinder 33 rotates along the inner cavity of the fixed cylinder 32 until the other end of the rotating cylinder 33 re-enters the inner cavity of the fixed cylinder 32, forming a closed space. At this time, the rotating cylinder 33 contacts and compresses the quartz block 34 under the pressure of the air. If the rotating cylinder 33 detaches from the fixed cylinder 32, the extension spring 35 contracts and pulls the rotating cylinder 33 back to its initial position. When it no longer forms a sealed cavity with the fixed cylinder 32, air leakage occurs at the connection between the rotating cylinder 33 and the fixed cylinder 32, resulting in poor sealing. This achieves the effect of airtightness self-check. If the rotating cylinder 33 does not detach from the fixed cylinder 32, it proves that the airtightness is good, and the machine descends underwater for underwater filming operations. Under stable air pressure, the fixed cylinder 32 pushes the rotating cylinder 33 to squeeze the quartz block 34, causing the quartz block 34 to generate current. The current is transmitted to multiple photoresistors 39. The photoresistors 39 detect the light intensity and convert it into a resistance value, which is fed back to the controller. When the resistance value of the multiple photoresistors 39 increases, it indicates that the light intensity transmitted to the fixed cylinder 32 has decreased, which means that impurities have adhered to the outer surfaces of the fixed cylinder 32 and the rotating cylinder 33, affecting the illumination and thus affecting the camera's image. When the resistance value of the photoresistors 39 exceeds the set value, the controller sends current to the electric telescopic rod 36, causing the electric telescopic rod 36 to push the moving rod 37 to move. This causes the cleaning ring 38 to wipe the outer surfaces of the fixed cylinder 32 and the rotating cylinder 33 back and forth, scraping off the adhered impurities and thus preventing them from affecting the camera's image.

[0055] When filming underwater, the nuclear fuel replacement process disturbs the water. A thin-film pressure sensor detects the impact force of the water flow on the rotating cylinder 33 and the fixed cylinder 32. If the impact force does not exceed a preset value, the water flow impact force is transmitted to the mounting plate 42, which, under the action of the push rod 410, compresses the buffer spring 411. The buffer spring 411's own restoring force absorbs the water flow impact force, thus preventing lens shake. When the thin-film pressure sensor detects that the water flow impact force exceeds the preset value, the buffer spring 411 is compressed and pulls the push rod 410, causing the moving block 49 to move outwards from the enclosed box 43. This causes the rotating plate 47 to rotate along the cylinder 48 and the arc-shaped column 44, reducing the angle between the rotating plate 47 and the fixed plate 46, causing lens shift. To prevent shake, the controller supplies a positive current to the coil 45, making the electromagnet on the rotating plate 47 and the magnet on the fixed plate 46 have the same polarity. As the angle between the rotating plate 47 and the fixed plate 46 decreases, the effective coil 45 becomes less, resulting in a lower resistance and an increased current. This increases the magnetism of the electromagnet on the rotating plate 47 and the repulsive force between it and the magnet on the fixed plate 46, causing the rotating plate 47 to reset. This, in turn, moves the moving block 49 into the enclosed box 43, reducing the pressure on the buffer spring 411. Simultaneously, the corresponding buffer spring 411 is pressed against the push rod 410, causing the moving block 49 to move into the enclosed box 43, increasing the angle between the rotating plate 47 and the fixed plate 46. The controller then supplies a reverse current to the coil 45, causing the electromagnet on the rotating plate 47 and the magnet on the fixed plate 46 to have opposite polarities. Before the rotating plate 47 begins to rotate, the mutual attraction between the rotating plate 47 and the fixed plate 46 resists the thrust from the buffer spring 411, causing the buffer spring 411 to quickly reset. This collectively resists the impact of the water flow, preventing camera lens shake and improving the image capture effect of the camera 5.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A nuclear industry underwater camera with a sealing self-test function, characterized in that: The system includes a mounting bracket (1), a fixing bracket (2), a sealing unit (3), a stabilizing unit (4), and a camera (5). The mounting bracket (1) is fixedly installed on the lifting platform, the fixing bracket (2) is fixedly installed on the lifting platform, the sealing unit (3) is fixedly connected to the mounting bracket (1), the sealing unit (3) has the functions of self-cleaning and sealing the camera (5), the stabilizing unit (4) is fixedly installed inside the sealing unit (3), the stabilizing unit (4) prevents the camera (5) from shaking, the camera (5) is connected to the stabilizing unit (4), and the camera (5) is fixedly connected to the fixing bracket (2). The sealing unit (3) includes an air pump (31), a fixed cylinder (32), a rotating cylinder (33), a quartz block (34), a telescopic spring (35), an electric telescopic rod (36), a moving rod (37), a cleaning ring (38), and a photoresistor (39). The air pump (31) is fixedly installed on the side surface of the mounting frame (1). The fixed cylinder (32) consists of an outer cylinder and an inner cylinder. The fixed cylinder (32) is fixedly installed on the inner surfaces of both ends of the mounting frame (1). The air pump (31) is connected to the cavity between the inner and outer cylinders of the fixed cylinder (32) through a pipe. The quartz block (34) is fixedly installed at both ends of the cavity of the fixed cylinder (32). The rotating cylinder (33) is rotatably installed in the cavity of the fixed cylinder (32). One end of the rotating cylinder (33) is fixedly connected to the quartz block (34) via a telescopic spring (35). The fixed end of the electric telescopic rod (36) is fixedly installed on the outer surface of one side of the mounting frame (1) parallel to the horizontal axis. The telescopic end of the electric telescopic rod (36) is vertically fixedly connected to the end of the moving rod (37) away from the fixed cylinder (32). The other end of the moving rod (37) is fixedly connected to the cleaning ring (38). The cleaning ring (38) is slidably installed on the outer surfaces of the fixed cylinder (32) and the rotating cylinder (33). A layer of bristles is attached to the inner surface of the cleaning ring (38). The photoresistor (39) is electrically connected to the quartz block (34). Multiple sets of the photoresistors (39) are fixedly connected to the anti-shake unit (4). Thin-film pressure sensors are attached to the outer surfaces of the fixed cylinder (32) and the rotating cylinder (33). The pressure sensors are electrically connected to an external controller. The photoresistor (39) is also electrically connected to the external controller.

2. A nuclear industry underwater camera with a sealing self-test function according to claim 1, characterized in that: The anti-shake unit (4) includes an adjusting wheel (41), a mounting plate (42), a sealed box (43), an arc-shaped column (44), a coil (45), a fixed plate (46), a rotating plate (47), a cylinder (48), a moving block (49), a push rod (410), and a buffer spring (411). Multiple sets of photoresistors (39) are uniformly fixedly mounted on the surface of the mounting plate (42). The adjusting wheel (41) is rotatably mounted on the inner surfaces of both ends of the inner cylinder of the fixed cylinder (32). A mounting plate (42) is fixedly connected between two adjusting wheels (41). A cylindrical groove is provided on the surface of the mounting plate (42). The sealed box (43) is fixedly mounted on the mounting plate (42). One end of the arc-shaped column (44) is fixedly mounted on the inner surface of the sealed box (43) near the camera (5), and the other end is fixedly connected to the fixed plate (46). The coil (45) is uniformly wound around the arc-shaped column (44). The fixed plate... (46) Fixedly installed in the closed box (43), one end of the rotating plate (47) is rotatably installed on the cylinder (48), and the other end is sleeved on the outer surface of the arc-shaped column (44). A conductive ring is provided at the contact end of the rotating plate (47) and the arc-shaped column (44). The rotating plate (47) is slidably connected to the arc-shaped column (44) through the conductive ring. The cylinder (48) is fixedly installed in the closed box (43). One end of the moving block (49) is fixedly connected to the end of the rotating plate (47) near the camera (5), and the other end is fixedly connected to one end of the push rod (410). The other end of the push rod (410) is slidably connected to the cylindrical slot of the mounting plate (42). The closed box (43) has a rectangular through slot. The moving block (49) is slidably installed in the rectangular through slot of the closed box (43). One end of the buffer spring (411) is fixedly connected to the push rod (410), and the other end is fixedly connected to the lens of the camera (5).

3. A nuclear industry underwater camera with a sealing self-test function according to claim 1, characterized in that: The rotating cylinder (33) is 4 / 5 cylindrical in circumference, and the fixed cylinder (32) is 1 / 2 cylindrical in circumference.

4. A nuclear industry underwater camera with a sealing self-test function according to claim 1, characterized in that: Both the fixed cylinder (32) and the rotating cylinder (33) are made of transparent glass.

5. A nuclear industry underwater camera with a sealing self-test function according to claim 2, characterized in that: The surface of the fixed plate (46) is uniformly provided with multiple sets of magnets, and the surface of the rotating plate (47) is provided with multiple sets of electromagnets that cooperate with the magnets along the rotation arc of the rotating plate (47).

6. A nuclear industry underwater camera with a sealing self-test function according to claim 1, characterized in that: The camera (5) is coated with an anti-radiation coating.

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