CN112366021A - Equipment and method for realizing homogenization of reactor irradiation parameters - Google Patents
Equipment and method for realizing homogenization of reactor irradiation parameters Download PDFInfo
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- CN112366021A CN112366021A CN202011237094.6A CN202011237094A CN112366021A CN 112366021 A CN112366021 A CN 112366021A CN 202011237094 A CN202011237094 A CN 202011237094A CN 112366021 A CN112366021 A CN 112366021A
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- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
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Abstract
The invention discloses equipment and a method for realizing homogenization of reactor irradiation parameters, wherein the equipment comprises a rotating head, an irradiation sample box and a positioning assembly, the rotating head rotates through a reaction force provided by flowing water in a reactor to drive the irradiation sample box to rotate, the irradiation sample box is used for fixing a sample to be irradiated, and the positioning assembly ensures the stability of the whole equipment and ensures that the irradiation sample box does not generate eccentricity when rotating; the method disclosed by the invention utilizes the equipment and takes the high-speed water flow in the reactor core as power to drive the irradiation sample box (or the sample) to rotate, and the irradiation sample of the reactor can be uniformly irradiated without additional power. The equipment disclosed by the invention also has the characteristics of strong universality, convenience in installation and replacement, resource saving and strong stability.
Description
Technical Field
The invention belongs to the field of reactor application and nuclear technology application, and particularly relates to equipment and a method for realizing reactor irradiation parameter homogenization.
Background
Under the large background of rapid development of nuclear power and nuclear technology in China, various irradiation tasks are increasingly required in nuclear reactors, such as material irradiation examination, material modification, neutron activation analysis, isotope production and the like, whether various irradiation tasks in the nuclear reactors can be successfully completed or not has a direct relation with various irradiation parameters of reactors, such as irradiation parameters of neutron fluence, energy spectrum, gamma dose, heat generation rate and the like, and meanwhile, various parameters in the reactors have great influence on the performance of irradiated samples, such as influence on the irradiation temperature, irradiation parameter setting, irradiation performance and the like of the samples.
When a sample or material to be irradiated is irradiated in a reactor, the sample or material is usually placed at a specific position in a reactor pore channel, at the moment, neutrons and gamma rays received by the sample in different directions have large differences, the differences directly result in different irradiation performances of different parts of the sample or material, and the irradiation differences caused by uneven irradiation cannot be distinguished in practice, so that corresponding compensation cannot be performed on the sample according to the difference of received irradiation in subsequent treatment.
At present, in order to reduce the influence of nonuniform irradiation of a reactor on materials or samples, an external power device and a control system are generally adopted to realize the homogenization of irradiation parameters of the reactor, and the mode needs to lead out a power line, a signal line, a control cable, a pipeline and the like from an irradiation pore channel in the reactor.
Therefore, there is a need for an automated apparatus and method that can achieve reactor irradiation parameter homogenization, which can automatically achieve uniform irradiation of a sample in a reactor.
Disclosure of Invention
In view of the above, the present invention provides an automated apparatus for homogenizing reactor irradiation parameters, which uses water flowing in a reactor as power to drive a sample box for fixing a sample to be irradiated to rotate at a constant speed, so as to homogenize reactor irradiation parameters, and a method for homogenizing irradiation parameters by using the apparatus.
In order to achieve the purpose, the invention adopts the following technical scheme: an apparatus for achieving homogenization of reactor irradiation parameters, the apparatus comprising:
the rotary head is in a frustum shape, an arc-shaped groove is formed in the side surface of the rotary head, and a convex threaded connector is arranged at the bottom of the frustum;
the irradiation sample box is in threaded connection with the rotating head at one end, and the threaded connection direction of the irradiation sample box and the rotating head is the tighter direction of connection when the rotating head drives the irradiation sample box to rotate;
the positioning assembly is in threaded connection with the other end of the irradiation sample box, and the positioning assembly and the irradiation sample box are in threaded connection in the direction that the irradiation sample box rotates and the tighter the connection between the positioning assembly and the irradiation sample box.
Preferably, the irradiation sample cartridge comprises:
the sample box cover is a concave cover body with internal threads, and the threaded connector at the bottom of the rotating head is embedded into the concave opening of the sample box cover and is in threaded connection with the concave opening.
The sample box body is provided with blind holes at two ends, the bottom of the blind hole at one end is provided with a plurality of non-penetrating sample holes, and the inner wall of the blind hole at the other end is provided with threads; the sample box cover is nested in the blind hole at the end of the sample box body with the sample hole through the bayonet I.
Preferably, the positioning assembly comprises:
the sample box comprises a rotating shaft, a sample box body and a clamping device, wherein one end of the rotating shaft is provided with a threaded connector, the other end of the rotating shaft is provided with a pin hole, and the threaded connector is embedded into a blind hole with threads in the sample box body and is in threaded connection with the blind hole;
the positioning sleeve is a double-opening cylinder, a plurality of water flowing grooves are arranged on the outer surface of the cylinder, and the water flowing grooves are parallel to the axis of the positioning sleeve and have the same length as the positioning sleeve; the rotating shaft is arranged in the positioning sleeve through a ball bearing;
the positioning block is a cylindrical table with a through hole in the center, the diameter of the through hole is the same as that of a pin hole of the rotating shaft, and the positioning block is embedded into the positioning sleeve and tightly props against one end of the rotating shaft, which is provided with the pin hole;
the center of the heightening block is provided with a through hole, and the diameter of the through hole is the same as that of the pin hole of the rotating shaft; the heightening block is arranged at one end of the positioning sleeve through the rotary bayonet II;
and the positioning pin sequentially penetrates through the through holes of the heightening block and the positioning block and is embedded into the pin hole of the rotating shaft.
Preferably, the rotary head is provided in a plurality of rotary heads having different numbers and depths of surface grooves.
Preferably, the sample cartridge may be provided as a cartridge having a different shape and number of sample wells.
Preferably, the block-up block is provided as a plurality of block-up blocks having different heights.
A method of achieving reactor irradiation parameter homogenization, the method comprising the steps of:
step 1: installing a sample to be irradiated in an irradiation sample box of equipment for realizing the homogenization of reactor irradiation parameters;
step 2: placing the equipment provided with the sample to be irradiated in an irradiation pore channel in a reactor;
and step 3: the water flow in the reactor core flows through the device, the rotating head is driven to rotate at a constant speed, and the rotating head drives the irradiation sample box to rotate.
The invention has the beneficial effects that: the equipment for realizing the homogenization of the irradiation parameters of the reactor is provided with the rotating head with the arc-shaped groove, the rotating head utilizes the high-speed water flow in the reactor core as power to automatically rotate and drive the irradiation sample box (or the sample) to rotate, so that the static irradiation in the reactor is changed into dynamic irradiation, the automatic homogenization of the irradiation parameters in the reactor received by the sample is realized, and the problems of difficult construction, easy failure, high risk, short service life and the like when a driving device is utilized in the prior art are avoided; the rotating speed of the irradiation sample box is adjusted by arranging a plurality of rotating heads with different arc groove depths and numbers, and the irradiation experiments of various samples are realized by arranging sample holes with different shapes and different numbers, so that the equipment has universality; the upper end and the lower end of the irradiation sample box are in threaded connection with the rotating head and the rotating shaft, so that the irradiation sample box is convenient to install and replace; when the device is used, the sample box, the rotating head, the positioning assembly and the like can be repeatedly used, and can be locally updated to adapt to environmental requirements according to the irradiation position environment, so that resources are effectively saved; the equipment utilizes the positioning sleeve, the positioning block and the positioning pin to be matched and positioned, so that the rotation stability of the irradiation sample box is ensured, and the uniform reactor irradiation is realized. The method disclosed by the invention utilizes high-speed flowing water in the reactor as a driving force, realizes automatic homogenization of irradiation parameters, and saves energy.
Drawings
FIG. 1 is an assembly view of the reactor irradiation parameter uniformizing apparatus according to the present invention;
FIG. 2 is an assembled cross-sectional view of the apparatus for homogenizing irradiation parameters of a reactor according to the present invention;
FIG. 3 is a schematic view of a rotary head structure according to the present invention;
FIG. 4 is a schematic view of a cover structure of a sample case according to the present invention;
FIG. 5 is a schematic view of a sample cartridge body according to the present invention;
FIG. 6 is a schematic view of a rotary shaft according to the present invention;
FIG. 7 is a schematic view of the structure of the positioning sleeve of the present invention;
FIG. 8 is a schematic view of a positioning block according to the present invention;
FIG. 9 is a schematic view of the structure of the block according to the present invention;
in the figure, 1, a rotating head 2, an irradiation sample box 3, a positioning assembly 21, a sample box cover 22, a sample box body 221, a sample hole 222, a bayonet I31, a rotating shaft 32, a positioning sleeve 321, a bayonet II 33, a ball bearing 34, a positioning block 35, a block-up block 36 and a positioning pin.
Detailed Description
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
The invention is described in detail below with reference to the figures and specific embodiments.
An apparatus for homogenizing reactor irradiation parameters as shown in fig. 1 and 2, comprising: rotating head 1, irradiation sample box 2 and locating component 3, wherein:
the rotary head 1 shown in fig. 3 is a frustum with an arc-shaped groove on the side surface, and a convex threaded connector is arranged at the bottom of the frustum; when flowing water in the reactor flows through the rotating head 1, the arc-shaped groove of the rotating head 1 generates tangential force, so that the rotating head is driven to rotate; the groove depth and the number of the arc-shaped grooves on the surface of the rotating head 1 can be adjusted so as to conveniently adjust the rotating speed of the rotating head 1.
The irradiation sample box 2 comprises a sample box cover 21 and a sample box body 22.
As shown in fig. 4, the sample box cover 21 is a concave cover body with internal threads, and the threaded connector at the bottom of the rotating head 1 is inserted into the concave opening of the sample box cover 21 and is in threaded connection with the concave opening;
as shown in fig. 5, in the sample box body 22, blind holes are formed at two ends of the sample box body 22, a plurality of non-penetrating sample holes 221 are formed at the bottom of the blind hole at one end, and threads are arranged in the blind hole at the other end; the sample box cover 21 is nested in the blind hole at the end of the sample box body 22 with the sample hole 221 through the bayonet I222.
The sample box 22 may be designed as a plurality of sample holes 221 with different shapes and numbers, and the shape and number of the sample holes are selected according to the shape and number of the samples in the actual irradiation experiment.
The positioning assembly 3 includes a rotating shaft 31, a positioning sleeve 32, a ball bearing 33, a positioning block 34, a block 35, and a positioning pin 36.
As shown in fig. 6, one end of the rotating shaft 31 is provided with a threaded connector, and the other end surface is provided with a pin hole; as shown in fig. 1, the rotary shaft 31 is screwed into the blind hole of the sample case 22.
As shown in fig. 7, the positioning sleeve 32 is in a shape of a double-opening cylinder, a plurality of vertical water flowing grooves are arranged on the outer surface, and the length of the water flowing grooves is the same as that of the positioning sleeve 32; the rotating shaft 31 is arranged in the positioning sleeve 32 through a ball bearing 33, and the positioning sleeve 32 is used for fixing the whole device, so that the stability of the whole device is ensured, and the irradiation sample box 2 is not eccentric when rotating; the vertical flume on the outer surface of the positioning sleeve 32 can guide the water flow above the positioning sleeve, so that the water flow is smooth.
As shown in fig. 8, the positioning block 34 is a cylindrical table having a through hole at the center axis, the diameter of the through hole is the same as the diameter of the pin hole at the end of the rotating shaft 31, and the positioning block 34 is fitted into the positioning sleeve 32 and abuts against the end of the rotating shaft 31 having the pin hole.
As shown in fig. 9, a through hole is provided at the central axis of the block 35, and the diameter of the through hole is the same as the diameter of the pin hole at the end of the rotating shaft 31; the heightening block 35 is arranged at one end of the positioning sleeve 32 through a bayonet II 321; the block 35 is mainly used for adjusting the height of the irradiation sample box 2, so as to ensure that the sample to be irradiated placed in the sample box body 22 can be positioned in the irradiation range, and the height of the block 35 can be adjusted according to actual needs.
The positioning pin 36 sequentially penetrates through the through holes of the heightening block 35 and the positioning block 34 and is embedded into the pin hole of the rotating shaft 31, and the rotating precision of the rotating shaft 31 can be ensured through the positioning pin, so that the irradiation sample box 2 is not eccentric when rotating, and a sample to be irradiated receives uniform irradiation.
The invention discloses a using method of equipment for realizing reactor irradiation parameter homogenization, which comprises the following steps: the sample to be irradiated is placed in the sample hole 221 of the sample box body 22, then the device is completely assembled and placed in a reactor core pore channel, and the rotating head 1 is driven by water flow in the reactor core to rotate at a constant speed, so that the purpose that the sample is uniformly irradiated is achieved.
The equipment for realizing the homogenization of the irradiation parameters of the reactor disclosed by the invention utilizes the water flow in the reactor core as power to drive the irradiation sample box (or the sample) to rotate, thereby realizing the automatic homogenization of the irradiation parameters of the reactor, avoiding the problems of difficult construction, easy failure, high risk, short service life and the like when a driving device is utilized in the prior art, having universality aiming at different samples, being convenient to install and replace, and being capable of recycling a rotating head and a positioning component, thereby effectively saving resources; the positioning assembly is arranged to ensure the stability of the rotation of the irradiation sample box, so that the uniform reactor irradiation is realized.
Claims (7)
1. An apparatus for achieving homogenization of reactor irradiation parameters, the apparatus comprising:
the rotary head (1) is in a frustum shape, an arc-shaped groove is formed in the side surface of the rotary head (1), and a convex threaded connector is arranged at the bottom of the frustum;
the irradiation sample box (2), one end of the irradiation sample box (2) is in threaded connection with the rotating head (1), and the threaded connection direction of the irradiation sample box (2) and the rotating head (1) is the direction that the irradiation sample box (2) is connected and rotates more and more tightly when the rotating head (1) drives the irradiation sample box (2) to rotate;
locating component (3), locating component (3) and the other end threaded connection of irradiation sample box (2), locating component (3) and irradiation sample box (2) threaded connection direction are when irradiation sample box (2) rotate, and both connect and change tight direction more.
2. The apparatus for achieving homogenization of reactor irradiation parameters according to claim 1, wherein the irradiation sample box (2) comprises:
sample lid (21), sample lid (21) are the concave type lid that has the internal thread, and the threaded connection head embedding sample lid (21) concave type opening of rotating head (1) bottom, rather than threaded connection.
The sample box body (22), both ends of the sample box body (22) are provided with blind holes, the bottom of the blind hole at one end is provided with a plurality of non-penetrating sample holes (221), and the inner wall of the blind hole at the other end is provided with threads; the sample box cover (21) is nested in a blind hole at one end of the sample box body (22) provided with the sample hole (221) through a bayonet I (222).
3. The apparatus for achieving homogenization of reactor irradiation parameters according to claim 1, characterized in that the positioning assembly (3) comprises:
the sample box comprises a rotating shaft (31), wherein one end of the rotating shaft (31) is provided with a threaded connector, the other end of the rotating shaft is provided with a pin hole, and the threaded connector is embedded into a blind hole with threads in the sample box body (22) and is in threaded connection with the blind hole;
the positioning sleeve (32) is a double-opening cylinder, a plurality of water flowing grooves are formed in the outer surface of the cylinder, and the water flowing grooves are parallel to the axis of the positioning sleeve (32) and are the same as the positioning sleeve (32) in length; the rotating shaft (31) is arranged in the positioning sleeve (32) through a ball bearing (33);
the positioning block (34) is a cylindrical table with a through hole in the center, the diameter of the through hole is the same as that of a pin hole of the rotating shaft (31), and the positioning block (34) is embedded into the positioning sleeve (32) and tightly props against one end, provided with the pin hole, of the rotating shaft (31);
the center of the heightening block (35) is provided with a through hole, and the diameter of the through hole is the same as that of a pin hole of the rotating shaft (31); the heightening block (35) is arranged at one end of the positioning sleeve (32) through a bayonet II (321);
and the positioning pin (36), wherein the positioning pin (36) sequentially passes through the through holes of the heightening block (35) and the positioning block (34) and is embedded into the pin hole of the rotating shaft (31).
4. The apparatus for homogenizing reactor irradiation parameters according to claim 1, wherein the rotating head (1) is provided as a plurality of rotating heads with different numbers and depths of surface grooves.
5. The apparatus for homogenizing reactor irradiation parameters according to claim 2, wherein the sample box (22) is configured as a box with a plurality of sample holes (221) having different shapes and numbers.
6. The apparatus for homogenizing reactor irradiation parameters according to claim 2, characterized in that the block elevation (34) is provided as a plurality of blocks elevation blocks with different heights.
7. A method for achieving irradiation parameter homogenization using the apparatus of claim 1, the method comprising the steps of:
step 1: installing a sample to be irradiated in an irradiation sample box (2) of equipment for realizing the homogenization of reactor irradiation parameters;
step 2: placing the equipment provided with the sample to be irradiated in an irradiation pore channel in a reactor;
and step 3: the water flow in the reactor core flows through the device, the rotating head (1) is driven to rotate at a constant speed, and the rotating head (1) drives the irradiation sample box (2) to rotate.
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