A nuclear power plant pipe industrial cleaning machine

Abstract

This invention discloses an industrial cleaning machine for nuclear power plant pipes, comprising a cleaning tank with an internal insertion cleaning mechanism inside. The internal insertion cleaning mechanism includes a pipe limiting mechanism installed at the bottom of the cleaning tank, with a track fixing mechanism and a transmission mechanism respectively installed at both ends of the pipe limiting mechanism. The internal insertion cleaning mechanism also includes a rod-type track located between the track fixing mechanism and the transmission mechanism. A moving block is mounted on the rod-type track, and an ultrasonic rotating cleaning mechanism is mounted on the moving block. This invention can effectively clean the inner walls of nuclear power plant pipes.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and more specifically, to a cleaning machine for nuclear power plant pipes. Background Technology

[0002] With the rapid development of the nuclear power industry, large nuclear power pipes play a crucial role in the construction and operation of nuclear power plants. These pipes are typically used to transport coolants, steam, or other critical fluids, and the cleanliness of their inner walls directly affects the safety, operational efficiency, and service life of the nuclear power plant. However, due to the structural characteristics of nuclear power pipes, such as their large diameter and long length, traditional cleaning methods are insufficient to meet their high-precision and high-efficiency cleaning requirements.

[0003] Currently, the cleaning of nuclear power plant pipes mainly relies on methods such as chemical cleaning, high-pressure water jet cleaning, or mechanical brushing. These methods have the following shortcomings: While chemical cleaning can effectively remove surface dirt, it often involves the use of large amounts of chemical reagents, which may lead to environmental pollution. Furthermore, the cost of treating the waste liquid after cleaning is high, and the chemical reagents may also corrode the pipe surface, affecting its long-term performance. High-pressure water jet cleaning can remove some stubborn dirt, but its effect on removing small particles or oily contaminants from the inner wall of the pipe is limited, and the high-pressure water flow may cause mechanical damage to the inner wall of the pipe. Mechanical brushing removes dirt through physical friction, but the brushing tools cannot completely cover all areas, and the operation efficiency is low, making it unsuitable for large-scale production needs. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a nuclear power plant pipe cleaning machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This invention discloses a nuclear power plant pipe industrial cleaning machine, including a cleaning tank, an internal insertion cleaning mechanism inside the cleaning tank, the internal insertion cleaning mechanism including a pipe limiting mechanism installed at the bottom of the cleaning tank, a track fixing mechanism and a transmission mechanism respectively provided at both ends of the pipe limiting mechanism; the internal insertion cleaning mechanism also includes a rod-type track, the rod-type track is located between the track fixing mechanism and the transmission mechanism; a moving block is installed on the rod-type track, and an ultrasonic rotation cleaning mechanism is installed on the moving block.

[0007] Furthermore, it also includes a cleaning fluid distillation mechanism, with a cleaning fluid spray pipe provided on the side of the transmission mechanism, and the cleaning fluid spray pipe and the cleaning fluid distillation mechanism are connected by a pipe.

[0008] Furthermore, a track moving bracket is installed on the lower part of the rod track near the track fixing mechanism.

[0009] Furthermore, the track moving support includes a fixed block installed at the lower part of the rod track, at least two mounting arms are installed at the lower part of the fixed block, and a roller is rotatably provided at the end of the mounting arm away from the fixed block.

[0010] Furthermore, a connecting block is installed on the moving block, and the ultrasonic rotary cleaning mechanism includes a transducer and a rotating ring. The transducer is installed on the moving block, and the rotating ring is rotatably mounted on the connecting block. Several nozzles are arranged on the outer periphery of the rotating ring.

[0011] Furthermore, the rotating ring has an annular cavity inside, and a liquid outlet is provided on the outer periphery of the annular cavity corresponding to the position of the nozzle. The liquid outlet connects the nozzle and the annular cavity. An annular groove 1 is provided on the outer periphery of the connecting block, and an annular groove 2 corresponding to annular groove 1 is provided on the inner periphery of the rotating ring. A liquid supply hole is connected between annular groove 2 and the annular cavity. Two sealing rings are provided between the rotating ring and the connecting block, and the two sealing rings are located on both sides of annular groove 1 and annular groove 2, respectively. A submersible pump is provided on the moving block, and a connecting hole is provided on the moving block. The outlet end of the submersible pump is connected to the connecting hole. A liquid inlet is provided inside the connecting block. One end of the liquid inlet is connected to the connecting hole, and the other end of the liquid inlet is connected to annular groove 1.

[0012] Furthermore, the track fixing mechanism includes a mounting frame, a limit frame is provided inside the mounting frame, and a fixing screw is connected to both sides of the limit frame. A strip hole is opened on both sides of the mounting frame, the strip hole is set along the length direction of the mounting frame, the fixing screw passes through the strip hole, and the part of the fixing screw that passes through the strip hole is threadedly connected to a nut.

[0013] Furthermore, the transmission mechanism includes a support frame, with limit strips installed on the side of the support frame along its length. A support plate is installed inside the support frame, and a conveying roller is rotatably mounted on the upper part of the support plate. A conveying motor and a reducer are installed on the lower part of the support plate, and the conveying motor and reducer are driven together. The reducer and the conveying roller are driven by a belt drive. A locking block is installed on the lower part of the support plate corresponding to the positions on both sides of the limit strip, and a fastening screw is threaded onto the locking block.

[0014] The beneficial effects of this invention are as follows: the rod-shaped track is supported at both ends by a transmission mechanism and a track fixing mechanism, so that the rod-shaped track is located at the center of the nuclear power pipe. The ultrasonic rotary cleaning mechanism is kept suspended inside the pipe and will not contact the pipe wall, thus achieving contactless cleaning and avoiding secondary pollution. The ultrasonic rotary cleaning mechanism can generate high-frequency vibration through the transducer, causing the tiny bubbles in the cleaning fluid to break rapidly, generating impact force to peel off the dirt on the inner wall. The nozzle can rotate and spray, forming turbulence, further flushing away the dirt. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a nuclear power plant pipe cleaning machine in this embodiment;

[0016] Figure 2 This is a schematic diagram of the back of a nuclear power plant pipe cleaning machine in this embodiment;

[0017] Figure 3 This is a schematic diagram of one structure of the pipe limiting mechanism in this embodiment;

[0018] Figure 4 This is a schematic diagram of one structure of the insert cleaning mechanism in this embodiment;

[0019] Figure 5 This is a schematic diagram of one structure of the rod track in this embodiment;

[0020] Figure 6 This is a schematic diagram of one structure of the track moving support in this embodiment;

[0021] Figure 7 This is a schematic diagram of one installation of the moving block in this embodiment;

[0022] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0023] Figure 9 This is a schematic diagram of one structure of the track fixing mechanism in this embodiment;

[0024] Figure 10 This is a schematic diagram of one structure of the transmission mechanism in this embodiment.

[0025] Reference numerals: 1. Nuclear power plant pipe; 2. Internal insertion cleaning mechanism; 201. Conveying mechanism; 2011. Support frame; 2012. Limiting strip; 2013. Support plate; 2014. Conveying roller; 2015. Conveying motor; 2016. Reducer; 2017. Clamping block; 2018. Fastening screw; 202. Cleaning fluid spray nozzle; 203. Pipe limiting mechanism; 2031. Clamping block; 204. Track fixing mechanism ; 2041, Mounting frame; 2042, Limiting frame; 2043, Fixing screw one; 205, Rod-type rail; 2051, Rack; 206, Rail moving bracket; 2061, Fixing block; 2062, Support arm; 2063, Roller; 2064, Mounting arm; 2065, Adjusting arm; 2066, Fixing screw two; 2067, Oval hole; 2068, Mounting base; 2069, Fixing bolt; 20 7. Moving block; 2071. Drive gear; 2072. Submersible motor; 2073. Connecting hole; 208. Connecting block; 2081. Liquid inlet; 2082. Annular groove one; 209. Ultrasonic rotary cleaning mechanism; 2091. Rotating ring; 20911. Annular cavity; 20912. Liquid outlet; 20913. Liquid supply hole; 20914. Annular groove two; 20915. Sealing ring; 2092. Nozzle; 2093, Bearing; 2094, Submersible Pump; 2095, Support Frame; 2096, Worm Gear; 2097, Worm; 2098, Gear Ring; 2099, Transducer; 3, Cleaning Tank; 4, Cleaning Liquid Distillation Mechanism; 401, Distillation Purifier; 402, Distillation Storage Tank; 5, Storage Mechanism; 6, Vacuum Pump; 7, Waste Liquid Tank; 8, Housing; 9, Drying and Air Supply Mechanism; 10, Wastewater Storage Tank; 11, Liquid Supply Pump. Detailed Implementation

[0026] 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.

[0027] like Figures 1-10As shown, a nuclear power plant pipe industrial cleaning machine includes a cleaning tank 3, an internal cleaning mechanism 2, a cleaning fluid distillation mechanism 4, a storage mechanism 5, a vacuum pump 6, a waste liquid tank 7, a housing 8, a drying and air supply mechanism 9, a wastewater storage tank 10, and a liquid supply pump 11. The cleaning fluid distillation mechanism 4 includes a distillation purifier 401 and a distillation storage tank 402. The distillation storage tank 402 is connected to the storage mechanism 5, the vacuum pump 6, and the distillation purifier 401 via pipes. The distillation purifier 401 is connected to the cleaning tank 3 via a pipe. The cleaning tank 3 is connected to the wastewater storage tank 10 via a pipe. The drying and air supply mechanism 9 introduces outside air into the cleaning tank 3 for use during the drying stage. The liquid supply pump 11 is connected to the cleaning fluid spray pipe 202 via a pipe for injecting the cleaning fluid into the cleaning tank 3. The waste liquid tank 7 is connected to the cleaning fluid distillation mechanism 4 via a pipe.

[0028] like Figure 3 As shown, the internal cleaning mechanism 2 is installed inside the cleaning tank 3, and includes a pipe limiting mechanism 203. The pipe limiting mechanism 203 includes two sets of clamping blocks 2031, each set of clamping blocks 2031 being driven by an external drive mechanism, so that the two sets of clamping blocks 2031 are relatively close or far apart. The nuclear power pipe 1 is clamped and fixed inside the cleaning tank 3 by the two sets of clamping blocks 2031.

[0029] like Figure 4 As shown, a track fixing mechanism 204 and a transmission mechanism 201 are respectively provided at both ends of the pipe limiting mechanism 203. After fixing, the two ends of the nuclear power pipe 1 are respectively kept at a certain distance from the track fixing mechanism 204 and the transmission mechanism 201.

[0030] The transmission mechanism 201 is located on the side near the opening of the cleaning tank 3; the internal cleaning mechanism 2 also includes a rod rail 205, which is located between the rail fixing mechanism 204 and the transmission mechanism 201. The rod rail 205 is transported to the side of the rail fixing mechanism 204 through the transmission mechanism 201, so that the rod rail 205 passes through the nuclear power pipe 1 and enters the rail fixing mechanism 204 for limiting support.

[0031] like Figure 5 As shown, a movable block 207 is installed on the rod-type rail 205. The movable block 207 can move back and forth on the rod-type rail 205, and an ultrasonic rotary cleaning mechanism 209 is installed on the movable block 207. The ultrasonic rotary cleaning mechanism 209 uses ultrasonic vibration and high-pressure rotary jetting to remove stubborn dirt from the inner wall of the pipe, achieving deep cleaning of the inner wall of the nuclear power pipe 1. The ultrasonic rotary cleaning mechanism 209 does not come into contact with the nuclear power pipe 1 to avoid secondary contamination.

[0032] After the nuclear power pipe is placed on the pipe limiting mechanism 203 and fixed, the rod-type track 205 is installed inside, and then the pipe limiting mechanism 203 is transported as a whole into the cleaning tank 3 to clean the nuclear power pipe.

[0033] As the end of the rod-type track 205 moves away from the transmission mechanism 201, it will droop due to gravity and will not be able to accurately enter the track fixing mechanism 204. For example... Figure 6 As shown, by installing a track moving bracket 206 on the lower part of the rod track 205 near the track fixing mechanism 204, the end of the moving rod track 205 is supported, so that the end position of the rod track 205 does not change and can be accurately inserted into the track fixing mechanism 204.

[0034] The track-moving support 206 includes a fixing block 2061 installed at the lower part of the rod-type track 205. At least two mounting arms 2064 are installed at the lower part of the fixing block 2061. A roller 2063 is rotatably mounted at the end of the mounting arm 2064 away from the fixing block 2061. The roller 2063 contacts the inner wall of the nuclear power pipe 1. The track-moving support 206 also includes several support arms 2062. A mounting base 2068 is installed at the lower part of the fixing block 2061. One end of the support arm 2062 is mounted on the mounting base 2068 by fixing bolts 2069. This installation method allows the installation angle of the support arm 2062 to be adjusted.

[0035] The support arm 2062 has a slot on the side away from the mounting base 2068. Oval holes 2067 are located on both sides of the slot on the support arm 2062, communicating with the slot. An adjusting arm 2065 is connected to the side of the mounting arm 2064 near the fixing block 2061. The adjusting arm 2065 is located within the slot, and a second fixing screw 2066 is connected to its side. The second fixing screw 2066 passes through the oval hole 2067, and a nut is threaded onto the portion of the second fixing screw 2066 extending out of the oval hole 2067. The length of the adjusting arm 2065 inserted into the slot is adjustable, allowing for adjustment of the distance between the roller 2063 and the fixing block 2061. This adjustable installation is suitable for nuclear power plant tubing of different diameters.

[0036] After the end of the rod rail 205 enters the rail fixing mechanism 204, the rod rail 205 moves a certain distance, so that the rail moving support 206 leaves the nuclear power pipe 1 and the rail moving support 206 does not contact the nuclear power pipe 1.

[0037] like Figures 9-10As shown, the track fixing mechanism 204 includes a mounting frame 2041, a limiting frame 2042 is provided inside the mounting frame 2041, and a fixing screw 2043 is connected to both sides of the limiting frame 2042. The mounting frame 2041 has a strip hole on both sides, which is set along the length of the mounting frame 2041. The fixing screw 2043 passes through the strip hole, and the part of the fixing screw 2043 that passes through the strip hole is threaded with a nut. The transmission mechanism 201 includes a support frame 2011. A limit strip 2012 is installed on the side of the support frame 2011. The limit strip 2012 is arranged along the length of the support frame 2011. A support plate 2013 is arranged inside the support frame 2011. A conveying roller 2014 is rotatably arranged on the upper part of the support plate 2013. A conveying motor 2015 and a reducer 2016 are arranged at the lower part of the support plate 2013. The conveying motor 2015 and the reducer 2016 are drivenly connected. The reducer 2016 and the conveying roller 2014 are driven by belt transmission. A locking block 2017 is arranged at the lower part of the support plate 2013 corresponding to the two sides of the limit strip 2012. A fastening screw 2018 is threaded on the locking block 2017. The fastening screw 2018 abuts against the limit strip 2012 from both sides, thereby completing the fixation of the support plate 2013.

[0038] For nuclear power pipes 1 of different diameters, the heights of the support plate 2013 and the limiting frame 2042 are adjusted accordingly so that the rod track 205 can be located at the center of the nuclear power pipe 1, which also makes the ultrasonic rotating cleaning mechanism 209 located close to the center of the nuclear power pipe 1, so that the cleaning effect on all parts of the inner wall of the nuclear power pipe 1 can be consistent.

[0039] A connecting block 208 is mounted on the movable block 207. The ultrasonic rotary cleaning mechanism 209 includes a transducer 2099 and a rotating ring 2091. The transducer 2099 is mounted on the movable block 207, and the rotating ring 2091 is rotatably mounted on the connecting block 208. A bearing 2093 is provided between the rotating ring 2091 and the connecting block 208. Several nozzles 2092 are provided on the outer periphery of the rotating ring 2091, and a rod-type track 205 is provided passing through the rotating ring 2091.

[0040] The rotating ring 2091 has an annular cavity 20911 inside. A liquid outlet 20912 is provided on the outer periphery of the annular cavity 20911 corresponding to the position of the nozzle 2092. The liquid outlet 20912 connects the nozzle 2092 and the annular cavity 20911. An annular groove 2082 is formed on the outer periphery of the connecting block 208. An annular groove 20914 corresponding to the annular groove 2082 is provided on the inner periphery of the rotating ring 2091. The annular groove 20914 and the annular cavity 2091... A liquid supply hole 20913 is connected between the shaped cavity 20911. Two sealing rings 20915 are provided between the rotating ring 2091 and the connecting block 208. The two sealing rings 20915 are located on both sides of the first ring groove 2082 and the second ring groove 20914, respectively. When the rotating ring 2091 rotates on the connecting block 208, the sealing rings 20915 can prevent the cleaning fluid from leaking from the cavity formed by the first ring groove 2082 and the second ring groove 20914.

[0041] A submersible pump 2094 is installed on the movable block 207. A connecting hole 2073 is provided on the movable block 207, and the outlet end of the submersible pump 2094 is connected to the connecting hole 2073. An inlet hole 2081 is provided inside the connecting block 208, with one end connected to the connecting hole 2073 and the other end connected to the first annular groove 2082. After the submersible pump 2094 draws in the cleaning fluid, it is pumped through the connecting hole 2073 and the inlet hole 2081 into the chamber formed by the first annular groove 2082 and the second annular groove 20914. The cleaning fluid then enters the annular cavity 20911 through the supply hole 20913 and finally exits from the nozzle 2092 through the outlet hole 20912. High-frequency vibration generated by the transducer causes the tiny bubbles in the cleaning fluid to rapidly burst, generating an impact force that peels away dirt from the inner wall. The nozzle sprays the cleaning fluid to wash away the dirt.

[0042] The rod-type track 205 includes a rack 2051, which is arranged along the length of the rod-type track 205. A submersible motor 2072 is mounted on the moving block 207, and the submersible motor 2072 drives a drive gear 2071, which meshes with the rack 2051. The submersible motor 2072 drives the drive gear 2071 to rotate forward and backward, thereby causing the moving block 207 to move back and forth on the rod-type track 205.

[0043] The nozzle 2092 is not set along the radial direction of the rotating ring 2091. Instead, the angle between the axial direction of the nozzle 2092 and the radial direction of the rotating ring 2091 is set to 45 to 60 degrees. This allows the cleaning fluid sprayed from the nozzle 2092 to drive the rotating ring 2091 to rotate, and the sprayed cleaning fluid forms turbulence to flush away the dirt inside the large nuclear power pipe 1.

[0044] Another method to rotate the rotating ring 2091 involves installing a support frame 2095 within the connecting block 208. A worm gear 2096 and a worm 2097 are rotatably mounted on the support frame 2095, with their axes perpendicular to each other. A transmission gear is coaxially connected to the worm 2097, meshing with a rack 2051. A gear ring 2098 is installed within the rotating ring 2091, meshing with the worm gear 2096. When the moving block 207 moves on the rod-type track 205, the transmission gear rotates under the action of the rack 2051, subsequently driving the coaxial worm 2097 to rotate. The worm 2097 acts on the worm gear 2096, which in turn acts on the gear ring 2098, thus rotating the rotating ring 2091. This causes the cleaning fluid sprayed from the nozzle 2092 to form turbulence, enhancing the cleaning effect.

[0045] The submersible pump 2094 and submersible motor 2072 are powered by batteries and ensure good sealing.

[0046] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A nuclear power plant pipe industrial cleaning machine, characterized in that, The system includes a cleaning tank (3), which is equipped with an internal cleaning mechanism (2). The internal cleaning mechanism (2) includes a pipe limiting mechanism (203) installed at the bottom of the cleaning tank (3). The two ends of the pipe limiting mechanism (203) are respectively provided with a track fixing mechanism (204) and a transmission mechanism (201). The internal cleaning mechanism (2) also includes a rod-type track (205), which is located between the track fixing mechanism (204) and the transmission mechanism (201). A moving block (207) is installed on the rod-type track (205), and an ultrasonic rotating cleaning mechanism (209) is installed on the moving block (207). The rod-type track (209) is equipped with an ultrasonic rotating cleaning mechanism (209). 5) Includes a rack (2051) arranged along the length of the rod track (205), a submersible motor (2072) mounted on the moving block (207), the submersible motor (2072) driving a drive gear (2071) connected to the rod track (205), the drive gear (2071) meshing with the rack (2051); a track moving bracket (206) is installed on the lower part of the rod track (205) near the track fixing mechanism (204), a connecting block (208) is mounted on the moving block (207), the ultrasonic rotating cleaning mechanism (209) includes a transducer (2099) and a rotating ring (2091), the transducer (2099)... 9) Installed on the movable block (207), the rotating ring (2091) is rotatably mounted on the connecting block (208), and a plurality of nozzles (2092) are provided on the outer periphery of the rotating ring (2091); the track fixing mechanism (204) includes a mounting frame (2041), a limiting frame (2042) is provided inside the mounting frame (2041), and a fixing screw (2043) is connected to both sides of the limiting frame (2042). The mounting frame (2041) has strip holes on both sides, the strip holes are arranged along the length direction of the mounting frame (2041), the fixing screw (2043) passes through the strip holes, and the portion of the fixing screw (2043) that protrudes from the strip holes is... The transmission mechanism (201) includes a support frame (2011) with a nut threaded in place. A limit strip (2012) is installed on the side of the support frame (2011) along the length of the support frame (2011). A support plate (2013) is provided inside the support frame (2011). A conveying roller (2014) is rotatably mounted on the upper part of the support plate (2013). A conveying motor (2015) and a reducer (2016) are provided at the lower part of the support plate (2013). The conveying motor (2015) and the reducer (2016) are driven together. The reducer (2016) and the conveying roller (2014) are driven by a belt drive.A locking block (2017) is provided on the lower part of the support plate (2013) corresponding to both sides of the limiting strip (2012), and a fastening screw (2018) is threaded onto the locking block (2017).

2. The nuclear power plant pipe industrial cleaning machine according to claim 1, characterized in that, It also includes a cleaning fluid distillation mechanism (4), and a cleaning fluid nozzle (202) is provided on the side of the transmission mechanism (201). The cleaning fluid nozzle (202) is connected to the cleaning fluid distillation mechanism (4) through a pipe.

3. The nuclear power plant pipe industrial cleaning machine according to claim 1, characterized in that, The track moving support (206) includes a fixing block (2061) installed at the lower part of the rod track (205), and at least two mounting arms (2064) are installed at the lower part of the fixing block (2061). A roller (2063) is rotatably provided at the end of the mounting arm (2064) away from the fixing block (2061).

4. The nuclear power plant pipe industrial cleaning machine according to claim 1, characterized in that, The rotating ring (2091) has an annular cavity (20911) inside. A liquid outlet (20912) is provided on the outer periphery of the annular cavity (20911) corresponding to the position of the nozzle (2092). The liquid outlet (20912) connects the nozzle (2092) and the annular cavity (20911). An annular groove (2082) is formed on the outer periphery of the connecting block (208). An annular groove (20914) corresponding to the annular groove (2082) is provided on the inner periphery of the rotating ring (2091). A liquid supply hole (20913) connects the annular groove (20914) and the annular cavity (20911). Two sealing rings (20915) are provided between the moving block (207) and the connecting block (208), and the two sealing rings (20915) are located on both sides of the first ring groove (2082) and the second ring groove (20914), respectively; a submersible pump (2094) is provided on the moving block (207), and a connecting hole (2073) is provided on the moving block (207), the outlet end of the submersible pump (2094) is connected to the connecting hole (2073), and a liquid inlet hole (2081) is provided in the connecting block (208), one end of the liquid inlet hole (2081) is connected to the connecting hole (2073), and the other end of the liquid inlet hole (2081) is connected to the first ring groove (2082).

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