CN216562476U - High temperature gas cooled reactor fuel ball surface integrity detection device based on laser ranging - Google Patents
High temperature gas cooled reactor fuel ball surface integrity detection device based on laser ranging Download PDFInfo
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- CN216562476U CN216562476U CN202220065487.1U CN202220065487U CN216562476U CN 216562476 U CN216562476 U CN 216562476U CN 202220065487 U CN202220065487 U CN 202220065487U CN 216562476 U CN216562476 U CN 216562476U
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Abstract
The utility model discloses a high-temperature gas cooled reactor fuel sphere surface integrity detection device based on laser ranging, wherein an outlet of a feeding system is communicated with an inlet of an emitter sequentially through a first sphere path counter, a second sphere path counter and a conveying single device; the outlet of the pneumatic lifting system is communicated with the inlet of the emitter through an emission control valve, and the outlet of the slope pipeline is provided with a ball inlet positioner; the laser ranging detection device is sleeved on the ranging pipeline and is connected with the control and data processing system; the device can detect the surface defect of the measured object rapidly.
Description
Technical Field
The utility model belongs to the field of nuclear reactor fuel detection, and relates to a high-temperature gas cooled reactor fuel ball surface integrity detection device based on laser ranging.
Background
The nuclear fuel element is a core component for providing fission energy for a nuclear reactor, a large amount of fissile nuclides and induced radionuclides are generated in the fission process, wherein most of the radionuclides are enveloped in the nuclear fuel element of the reactor, the enveloping layer of the nuclear fuel element is a fuel element enveloping layer which is generally called a first barrier of a nuclear power plant, and the integrity of the first barrier is important guarantee for the safety of the nuclear power plant. Nuclear fuel element integrity testing of pressurized water reactors has proven experience and methodology with on-line radionuclide monitoring and integrity testing of nuclear fuel assemblies in the discharge state. The high-temperature gas cooled reactor is a first nuclear power generating set with four-generation technical characteristics in the world, a non-stop reactor refueling mode is adopted, a 60 mm-diameter spherical fuel element is used, nuclear fuel flows among equipment and pipelines of a reactor, a loading and unloading system, a new fuel system, a spent fuel system and other systems, the fuel element can be damaged to a certain extent, and the design damage rate is less than 2 multiplied by 10-4. The system designed by the current high-temperature gas cooled reactor can only identify the large-volume breakage of the fuel elements and cannot identify the small-volume breakage (because the missing part is less and the flow of the fuel ball is not influenced), if the fuel ball with the defects continuously flows in the reactor core and the system, the risk that the fuel ball is stuck in a pipeline (namely, the fuel ball is stuck) is increased, the broken fuel ball continuously participates in the nuclear fission reaction, and radioactive substances penetrate through the broken cladding layer to increase the radioactivity of the primary circuit. 6000 fuel balls of a reactor of a high-temperature gas cooled reactor flow out of a reactor core and enter a loading and unloading system every day, and 6000 fuel balls are simultaneously loaded into the reactor from the loading and unloading system, wherein about 800 new fuels and spent fuels are replaced, so that detection of at least 4-5 fuel balls is required to be completed every minute, the detection time of each ball is only 12-15 seconds, and a detection device capable of rapidly reflecting the damage condition of the fuel balls is required. The surface defect of the detected object can be quickly detected based on the laser measurement and feedback technology.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a device for detecting the surface integrity of a fuel ball of a high-temperature gas cooled reactor based on laser ranging, which can quickly detect the surface defects of a detected object.
In order to achieve the purpose, the laser ranging-based high-temperature gas cooled reactor fuel ball surface integrity detection device comprises a feeding system, a first ball path counter, a second ball path counter, a single conveying device, a transmitter, a slope pipeline, an inlet distributor, a ranging pipeline, an outlet distributor, a third ball path counter, a fourth ball path counter, a discharging system, a pneumatic lifting system, a transmitting control valve, a laser ranging detection device, a control and data processing system and a control system;
an outlet of the feeding system is communicated with an inlet of the emitter through a first ball path counter, a second ball path counter and a conveying single device in sequence, an outlet of the emitter is communicated with a first opening of the inlet distributor through a slope pipeline, a third opening of the inlet distributor is communicated with a first opening of the outlet distributor through a distance measuring pipeline, and a third opening of the outlet distributor is communicated with the discharging system through a third ball path counter and a fourth ball path counter in sequence;
the outlet of the pneumatic lifting system is communicated with the inlet of the emitter through an emission control valve, and the outlet of the slope pipeline is provided with a ball inlet positioner;
the laser ranging detection device is sleeved on the ranging pipeline and is connected with the control and data processing system;
the control system is connected with the laser ranging detection device, the first ball path counter, the second ball path counter, the inlet distributor, the outlet distributor, the third ball path counter, the fourth ball path counter, the launching control valve and the ball entering positioner.
The control and data processing system is connected with the image presenting device.
The ball path cleaning system is also included; the second opening of the inlet distributor is communicated with the outlet of the ball path cleaning system, and the second opening of the outlet distributor is communicated with the ball path cleaning system.
The included angle between the slope pipeline and the horizontal plane is 5-10 degrees.
The laser ranging detection device comprises a signal cable, a shell, a first laser unit, a first camera shooting unit, a second laser unit, a second camera shooting unit, a third laser unit, a third camera shooting unit, a fourth laser unit and a fourth camera shooting unit, wherein the first laser unit, the first camera shooting unit, the second laser unit, the second camera shooting unit, the third laser unit, the third camera shooting unit, the fourth laser unit and the fourth camera shooting unit are arranged in the shell and are uniformly distributed along the circumferential direction, a ranging pipeline penetrates through the shell, an electric penetrating piece is arranged on the side wall of the shell, and the first laser unit, the first camera shooting unit, the second laser unit, the second camera shooting unit, the third laser unit, the third camera shooting unit, the fourth laser unit and the fourth camera shooting unit are connected with a control and data processing system through the electric penetrating piece and the signal cable.
The distance measuring pipeline is made of transparent materials.
The laser plane projection surfaces of the emitted light beams of the first laser unit, the second laser unit, the third laser unit and the fourth laser unit are as follows: the first laser unit covers 270-90 degrees; the second laser unit covers 0-180 degrees; the third laser unit covers 90-270 degrees; the fourth laser unit covers 180-360 degrees;
the areas of the first camera unit, the second camera unit, the third camera unit and the fourth camera unit for receiving the laser lines of the light beams are as follows: the acquisition area of the first camera unit is 225-45 degrees; the acquisition area of the second camera unit is 315-135 degrees; the acquisition area of the third camera unit is 45-225 degrees; the acquisition area of the fourth camera unit ranges from 135 degrees to 315 degrees.
First laser unit, first camera unit, second laser unit, second camera unit, third laser unit, third camera unit, fourth laser unit and fourth camera unit detect by the predetermined fuel cell that starts the time sequence, wherein, time sequence 1: the first laser unit emits laser, and the first camera unit and the second camera unit receive laser rays; and (2) time sequence: the second laser unit emits laser, and the second camera unit and the third camera unit receive laser rays; sequence 3: the third laser unit emits laser, and the third camera unit and the fourth camera unit receive laser rays; and 4, time sequence: the fourth laser unit emits laser, and the fourth camera unit and the first camera unit receive laser rays.
The shell is provided with a negative pressure ventilation system.
The utility model has the following beneficial effects:
when the high-temperature gas cooled reactor fuel ball surface integrity detection device based on laser ranging is in specific operation, the laser ranging detection device and the control and data processing system are used for quickly detecting the surface defects of the high-temperature gas cooled reactor spherical fuel elements, screening and screening of the damaged spherical fuel elements are quickly completed, and the detection time of each fuel ball is ensured to be less than 10 seconds, wherein the measurement accuracy of laser ranging is high, the main stream high accuracy can reach 0.1mm or even 0.01mm and is far lower than the judgment standard of scratches or damages of the surface of the fuel ball, and therefore the detection accuracy is high.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an axial structural view of the laser range finding detection device 9;
fig. 3 is a radial structural view of the laser range finding detection device 9;
fig. 4 is a schematic diagram of the laser range-finding detection device 9 when performing laser transmission and reception.
Wherein, 1-1 is a feeding system, 1-2 is a discharging system, 2 is an air lifting system, 3 is a negative pressure ventilation system, 4 is a ball path cleaning system, 5-1 is a first ball path counter, 5-2 is a second ball path counter, 5-3 is a third ball path counter, 5-4 is a fourth ball path counter, 6 is a conveying single device, 7 is a transmitter, 8-1 is an inlet distributor, 8-2 is an outlet distributor, 9 is a laser ranging detection device, 10 is a transmitting control valve, 11 is a slope pipeline, 12 is a ball inlet positioner, 13 is a fuel ball, 14 is an electric penetration piece, 15 is a control and data processing system, 16 is an image presenting device, 17 is a signal cable, 18 is a shell, 19-1 is a first laser unit, 19-2 is a second laser unit, 19-3 is a third laser unit, 19-4 is a fourth laser unit, 20-1 is a first camera unit, 20-2 is a second camera unit, 20-3 is a third camera unit, 20-4 is a fourth camera unit, 21 is a distance measuring pipeline, 22 is a transmitting beam, and 23 is a receiving beam.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the utility model. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, 2, 3 and 4, the device for detecting the surface integrity of a fuel sphere 13 of a high temperature gas cooled reactor based on a laser ranging technology according to the present invention includes a feeding system 1-1, a first sphere path counter 5-1, a second sphere path counter 5-2, a single delivery unit 6, a transmitter 7, a slope pipeline 11, an inlet distributor 8-1, a ranging pipeline 21, an outlet distributor 8-2, a third sphere path counter 5-3, a fourth sphere path counter 5-4, a discharging system 1-2, a pneumatic lifting system 2, a transmission control valve 10, a laser ranging detection device 9, a control and data processing system 15 and a control system;
an outlet of the feeding system 1-1 is communicated with an inlet of the emitter 7 through a first ball path counter 5-1, a second ball path counter 5-2 and the single conveying device 6 in sequence, an outlet of the emitter 7 is communicated with a first opening of the inlet distributor 8-1 through a slope pipeline 11, a second opening of the inlet distributor 8-1 is communicated with an outlet of the ball path cleaning system 4, a third opening of the inlet distributor 8-1 is communicated with a first opening of the outlet distributor 8-2 through a distance measuring pipeline 21, a second opening of the outlet distributor 8-2 is communicated with the ball path cleaning system 4, and a third opening of the outlet distributor 8-2 is communicated with the discharging system 1-2 through a third ball path counter 5-3 and a fourth ball path counter 5-4 in sequence;
the outlet of the air-lift system 2 is connected with the inlet of the emitter 7 through an emission control valve 10, and the outlet of the slope pipeline 11 is provided with a ball inlet locator 12.
The fuel ball 13 flows in from the feeding system 1-1, and then passes through the first ball path counter 5-1 and the second ball path counter 5-2, is stopped by the single conveying device 6 and is conveyed to the slope pipeline 11 one by one, and then enters the laser ranging detection device 9, wherein the included angle between the slope pipeline 11 and the horizontal plane is 5-10 degrees, so that the fuel ball 13 can be ensured to have enough power to overcome the friction force, the fuel ball 13 is not blocked in the pipeline and cannot be stopped, the fuel ball 13 can be prevented from flowing too fast and cannot be stopped by the laser ranging detection device 9, and the ball entering positioner 12 is prevented from being damaged by the fuel ball 13.
The entering ball positioner 12 has three positions, namely a truncated ball, a ball entering position and a volleyball, wherein the initial state of the entering ball positioner 12 is the truncated ball state, after the fuel ball 13 enters the laser ranging detection device 9, the entering ball positioner 12 sends a entering position signal of the fuel ball 13, the laser ranging detection device 9 is started to start detecting the surface geometric shape of the fuel ball 13, after receiving a detection end instruction sent by the control system, the entering ball positioner 12 puts the fuel ball 13 away, at the moment, the entering ball positioner 12 is opened to be at the volleyball position, and after the first ball path counter 5-1 and the second ball path counter 5-2 detect that the fuel ball 13 passes through, the entering ball positioner 12 is restored to the initial truncated ball position.
The laser distance measuring and detecting device 9 comprises a shell 18, a first laser unit 19-1, a first camera unit 20-1, a second laser unit 19-2, a second camera unit 20-2, a third laser unit 19-3, a third camera unit 20-3, a fourth laser unit 19-4 and a fourth camera unit 20-4 which are arranged in the shell 18 and are uniformly distributed along the circumferential direction, a distance measuring pipeline 21 penetrates through the shell 18, an electric penetration piece 14 is arranged on the side wall of the shell 18, the first laser unit 19-1, the first camera unit 20-1, the second laser unit 19-2, the second camera unit 20-2, the third laser unit 19-3, the third camera unit 20-3, the fourth laser unit 19-4 and the fourth camera unit 20-4 are connected with a control and data processing system 15 through the electric penetration piece 14 and a signal cable 17, the control and data processing system 15 is connected to an image rendering device 16.
The first laser unit 19-1, the second laser unit 19-2, the third laser unit 19-3 and the fourth laser unit 19-4 are used for emitting a laser plane, and a laser line capable of reflecting the surface depth of the object to be detected projected by the laser plane is arranged in a plane image acquired by the camera unit. The first camera unit 20-1, the second camera unit 20-2, the third camera unit 20-3 and the fourth camera unit 20-4 are used for collecting plane images. The control and data processing system 15 is used for controlling the first laser unit 19-1, the first camera unit 20-1, the second laser unit 19-2, the second camera unit 20-2, the third laser unit 19-3, the third camera unit 20-3, the fourth laser unit 19-4 and the fourth camera unit 20-4, and the acquired plane image data and the position data of the first laser unit 19-1, the first camera unit 20-1, the second laser unit 19-2, the second camera unit 20-2, the third laser unit 19-3, the third camera unit 20-3, the fourth laser unit 19-4 and the fourth camera unit 20-4 are subjected to fitting calculation, to restore the surface three-dimensional contour and size data of the detected object, and then to display the data through the image display device 16; when the fuel ball 13 loop works, the first laser unit 19-1, the second laser unit 19-2, the third laser unit 19-3 and the fourth laser unit 19-4 alternately emit laser beams according to a preset time interval, the first camera unit 20-1, the second camera unit 20-2, the third camera unit 20-3 and the fourth camera unit 20-4 acquire corresponding plane images, the distance measuring pipeline 21 is made of a transparent material, the laser wavelength absorption rate is low, the transparent material also needs to meet the basic requirements of the fuel ball 13 loop, namely, the transparent material has certain strength, can bear the temperature and pressure of a designed system, and has certain radiation resistance. Since the amount of balls is large in the daily period, the transparent material may be worn after long-term operation to reduce the penetration rate of laser, which in turn affects the measurement quality, and thus the ranging tube 21 is designed to be repairable and replaceable.
The laser plane projection surfaces of the emission beams 22 of the first laser unit 19-1, the second laser unit 19-2, the third laser unit 19-3 and the fourth laser unit 19-4 are as follows: the first laser unit 19-1 covers 270 degrees to 90 degrees; the second laser unit 19-2 covers 0-180 degrees; the third laser unit 19-3 covers 90-270 degrees; the fourth laser unit 19-4 covers 180 deg. -360 deg..
The areas of the first camera unit 20-1, the second camera unit 20-2, the third camera unit 20-3 and the fourth camera unit 20-4 receiving the laser lines of the light beam 23 are as follows: the acquisition area of the first camera unit 20-1 is 225-45 degrees; the acquisition area of the second camera unit 20-2 is 315-135 degrees; the acquisition area of the third camera unit 20-3 is 45-225 degrees; the acquisition area of the fourth camera unit 20-4 is 135-315 degrees.
The method comprises the following steps that a first laser unit 19-1, a first camera unit 20-1, a second laser unit 19-2, a second camera unit 20-2, a third laser unit 19-3, a third camera unit 20-3, a fourth laser unit 19-4 and a fourth camera unit 20-4 detect a fuel element to be detected according to a certain starting sequence, wherein the sequence is 1: the first laser unit 19-1 emits laser, and the first camera unit 20-1 and the second camera unit 20-2 receive laser rays; and (2) time sequence: the second laser unit 19-2 emits laser, and the second camera unit 20-2 and the third camera unit 20-3 receive laser rays; sequence 3: the third laser unit 19-3 emits laser, and the third camera unit 20-3 and the fourth camera unit 20-4 receive laser rays; and 4, time sequence: the fourth laser unit 19-4 emits laser light, and the fourth camera unit 20-4 and the first camera unit 20-1 receive laser rays.
Taking the first laser unit 19-1 as an example, as shown in fig. 4, in operation, the first laser unit 19-1 emits a laser plane which can cover the surface of the fuel element to be tested facing the first laser unit 19-1, i.e. the 270 ° to 90 ° region, the first camera unit 20-1 receives a laser line in the 225 ° to 45 ° region, and the second camera unit 20-2 receives a laser line in the 315 ° to 135 ° region. According to the position information of each laser unit and each camera unit, the laser rays received by each camera unit are mutually overlapped, the control and data processing system 15 carries out 3D modeling fitting and data analysis on the received light beam 23 received by each camera unit to form a three-dimensional image of the surface of the measured fuel element, the linearity judgment is carried out on the data of the spherical surface, and when the linearity degree exceeds the surface flatness alarm value of the fuel ball 13, the surface of the fuel element is judged to be damaged.
After the ball entering locator 12 receives the signal of the end of detection, the control and data processing system 15 sends out the release signal to allow the fuel ball 13 to pass through, at this time, the power required for the transmission of the fuel ball 13 comes from the high-pressure helium gas of the pneumatic lifting system 2, the emission control valve 10 is opened to convey the high-pressure helium gas into the pipeline, the kinetic energy of the high-pressure helium gas is converted into the kinetic energy of the fuel ball 13, and the fuel ball 13 is guided into the discharging system 1-2. The outlet of the laser distance measuring detection device 9 is provided with a third ball path counter 5-3 and a fourth ball path counter 5-4, during the normal operation, the first ball path counter 5-1 and the second ball path counter 5-2 should have the same counting as the third ball path counter 5-3 and the fourth ball path counter 5-4, when the first ball path counter 5-1 and the second ball path counter 5-2 have more 1 than the counting of the third ball path counter 5-3 and the fourth ball path counter 5-4, it indicates that 1 fuel ball 13 in the laser distance measuring detection device 9 is being detected, after the detection is finished, the fuel ball 13 is discharged, 1 is added to the third ball path counter 5-3 and the fourth ball path counter 5-4, the control and data processing system 15 sends a signal for closing the emission control valve 10, and allows the laser range detection device 9 to take the next fuel ball 13 measurement.
Through a round of detection control and detection process, the state change condition of each device is as follows:
initial state
The counting of the first ball path counter 5-1, the second ball path counter 5-2, the third ball path counter 5-3 and the fourth ball path counter 5-4 is 0, the first opening and the third opening of the inlet distributor 8-1 are communicated, the first opening and the third opening of the outlet distributor 8-2 are communicated, the laser ranging detection device 9 is in a standby state, the emission control valve 10 is closed, the single conveying device 6 is reset, and the ball entering positioner 12 is in a ball intercepting state;
The first ball path counter 5-1 and the second ball path counter 5-2 count and add 1, the third ball path counter 5-3 and the fourth ball path counter 5-4 are both 0, the first opening and the third opening of the inlet distributor 8-1 are communicated, the first opening and the third opening of the outlet distributor 8-2 are communicated, the laser ranging detection device 9 is in a standby state, the launching control valve 10 is closed, the single conveying device 6 starts one-time ball intake, and the ball intake positioner 12 is in a ball cutting state;
ball in place
The counting of the first ball path counter 5-1 and the second ball path counter 5-2 is 1, the counting of the second ball path counter 5-2 and the third ball path counter 5-3 is 0, the first opening and the third opening of the inlet distributor 8-1 are communicated, the first opening and the third opening of the outlet distributor 8-2 are communicated, the laser ranging detection device 9 is in a standby state, the launching control valve 10 is closed, the single conveying device 6 is reset, and the ball entering positioner 12 is used for ball entering;
start-up detection
The counting of the first ball path counter 5-1 and the second ball path counter 5-2 is 1, the counting of the second ball path counter 5-2 and the third ball path counter 5-3 is 0, the first opening and the third opening of the inlet distributor 8-1 are communicated, the first opening and the third opening of the outlet distributor 8-2 are communicated, the laser ranging detection device 9 is started, the launching control valve 10 is closed, the single conveying device 6 is reset, and the ball entering positioner 12 is used for putting balls into place;
volleyball for detection end
The counting of the first ball path counter 5-1 and the second ball path counter 5-2 is 1, the counting of the second ball path counter 5-2 and the third ball path counter 5-3 is added with 1, the first opening and the third opening of the inlet distributor 8-1 are communicated, the first opening and the third opening of the outlet distributor 8-2 are communicated, the laser ranging detection device 9 is in standby, the launching control valve 10 is opened, the conveying single device 6 is reset, and the ball entering positioner 12 is opened to put balls;
volleyball ending
The counting of the first ball path counter 5-1 and the second ball path counter 5-2 is 1, the counting of the second ball path counter 5-2 and the third ball path counter 5-3 is 1, the first opening and the third opening of the inlet distributor 8-1 are communicated, the first opening and the third opening of the outlet distributor 8-2 are communicated, the laser ranging detection device 9 is standby, the launching control valve 10 is closed, the single conveying device 6 is reset, and the ball entering positioner 12 intercepts balls;
in operation, the impurities may affect the accuracy of the detection device due to the possible presence of graphite dust and fuel sphere 13 debris within the laser range detection device 9. The utility model is also provided with a ball path cleaning system 4, a first opening and a second opening of the inlet distributor 8-1 are communicated, a first opening and a second opening of the outlet distributor 8-2 are communicated, purge air flow is introduced from the ball path cleaning system 4, cleaning rubber balls enter the laser ranging detection device 9 through the inlet distributor 8-1, and then are led out through the outlet distributor 8-2. The blowing air flow can bring out dust and fuel ball 13 scraps in the laser ranging detection device 9, the cleaning rubber ball can also clean the inner wall of the laser ranging detection device 9 under the action of the blowing air flow, the cleaning rubber ball has compressibility, and the ball path cleaning system 4 counts and processes the recovered impurities and the rubber ball.
The casing 18 is used for avoiding the interference of an external light source, the casing 18 is provided with a negative pressure ventilation system 3 connected with the casing 18 so as to ensure continuous ventilation, ventilation and cooling, and the casing is in a micro negative pressure state relative to the environment and can prevent radioactive substances from leaking.
Claims (9)
1. The device for detecting the integrity of the surface of a fuel ball of a high-temperature gas cooled reactor based on laser ranging is characterized by comprising a feeding system (1-1), a first ball path counter (5-1), a second ball path counter (5-2), a single conveying device (6), a transmitter (7), a slope pipeline (11), an inlet distributor (8-1), a ranging pipeline (21), an outlet distributor (8-2), a third ball path counter (5-3), a fourth ball path counter (5-4), a discharging system (1-2), a pneumatic lifting system (2), a transmitting control valve (10), a laser ranging detection device (9), a control and data processing system (15) and a control system;
an outlet of the feeding system (1-1) is communicated with an inlet of the emitter (7) through a first ball path counter (5-1), a second ball path counter (5-2) and the single conveying device (6) in sequence, an outlet of the emitter (7) is communicated with a first opening of the inlet distributor (8-1) through a slope pipeline (11), a third opening of the inlet distributor (8-1) is communicated with a first opening of the outlet distributor (8-2) through a distance measuring pipeline (21), and a third opening of the outlet distributor (8-2) is communicated with the discharging system (1-2) through a third ball path counter (5-3) and a fourth ball path counter (5-4) in sequence;
an outlet of the pneumatic lifting system (2) is communicated with an inlet of the emitter (7) through an emission control valve (10), and an outlet of the slope pipeline (11) is provided with a ball inlet positioner (12);
the laser ranging detection device (9) is sleeved on the ranging pipeline (21), and the laser ranging detection device (9) is connected with the control and data processing system (15);
the control system is connected with the laser ranging detection device (9), the first ball path counter (5-1), the second ball path counter (5-2), the inlet distributor (8-1), the outlet distributor (8-2), the third ball path counter (5-3), the fourth ball path counter (5-4), the launching control valve (10) and the ball entering positioner (12).
2. The laser ranging-based high-temperature gas cooled reactor fuel sphere surface integrity detection device as claimed in claim 1, wherein the control and data processing system (15) is connected with an image presentation device (16).
3. The laser ranging-based high-temperature gas cooled reactor fuel sphere surface integrity detection device according to claim 1, characterized by further comprising a sphere path cleaning system (4); the second opening of the inlet distributor (8-1) is communicated with the outlet of the ball path cleaning system (4), and the second opening of the outlet distributor (8-2) is communicated with the ball path cleaning system (4).
4. The laser ranging-based high-temperature gas cooled reactor fuel sphere surface integrity detection device as claimed in claim 1, wherein an included angle between the slope pipeline (11) and a horizontal plane is 5-10 degrees.
5. The laser ranging-based high-temperature gas cooled reactor fuel sphere surface integrity detection device according to claim 1, wherein the laser ranging detection device (9) comprises a signal cable (17), a shell (18), a first laser unit (19-1), a first camera unit (20-1), a second laser unit (19-2), a second camera unit (20-2), a third laser unit (19-3), a third camera unit (20-3), a fourth laser unit (19-4) and a fourth camera unit (20-4) which are arranged in the shell (18) and evenly distributed along the circumferential direction, a ranging pipeline (21) penetrates through the shell (18), an electric penetrating piece (14) is arranged on the side wall of the shell (18), and the first laser unit (19-1), the first camera unit (20-1) and the second camera unit (20-4), The second laser unit (19-2), the second camera unit (20-2), the third laser unit (19-3), the third camera unit (20-3), the fourth laser unit (19-4) and the fourth camera unit (20-4) are connected with the control and data processing system (15) through the electric penetration piece (14) and the signal cable (17).
6. The laser ranging-based high-temperature gas cooled reactor fuel sphere surface integrity detection device according to claim 5, characterized in that the ranging pipe (21) is made of transparent material.
7. The laser ranging-based high-temperature gas cooled reactor fuel sphere surface integrity detection device according to claim 5, wherein the laser plane projection surfaces of the emission beams (22) of the first laser unit (19-1), the second laser unit (19-2), the third laser unit (19-3) and the fourth laser unit (19-4) are as follows: the first laser unit (19-1) covers 270 degrees to 90 degrees; the second laser unit (19-2) covers 0-180 degrees; the third laser unit (19-3) covers 90-270 degrees; the fourth laser unit (19-4) covers 180-360 degrees;
the areas of the first camera unit (20-1), the second camera unit (20-2), the third camera unit (20-3) and the fourth camera unit (20-4) for receiving the laser lines of the light beam (23) are as follows: the acquisition area of the first camera unit (20-1) is 225-45 degrees; the acquisition area of the second camera unit (20-2) is 315-135 degrees; the acquisition area of the third camera unit (20-3) is 45-225 degrees; the acquisition area of the fourth camera unit (20-4) is 135-315 degrees.
8. The laser ranging-based high-temperature gas cooled reactor fuel sphere surface integrity detection device according to claim 5, wherein the first laser unit (19-1), the first camera unit (20-1), the second laser unit (19-2), the second camera unit (20-2), the third laser unit (19-3), the third camera unit (20-3), the fourth laser unit (19-4) and the fourth camera unit (20-4) detect a fuel element to be detected according to a preset starting sequence, wherein the sequence 1: the first laser unit (19-1) emits laser, and the first camera unit (20-1) and the second camera unit (20-2) receive laser rays; and (2) time sequence: the second laser unit (19-2) emits laser, and the second camera unit (20-2) and the third camera unit (20-3) receive laser rays; sequence 3: the third laser unit (19-3) emits laser, and the third camera unit (20-3) and the fourth camera unit (20-4) receive laser rays; and 4, time sequence: the fourth laser unit (19-4) emits laser light, and the fourth camera unit (20-4) and the first camera unit (20-1) receive laser rays.
9. The laser ranging-based high-temperature gas cooled reactor fuel sphere surface integrity detection device according to claim 1, characterized in that the shell (18) is provided with a negative pressure ventilation system (3) connected thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN114334199B (en) * | 2022-01-11 | 2024-07-23 | 西安热工研究院有限公司 | High-temperature gas cooled reactor fuel sphere surface integrity detection device based on laser ranging |
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