CN107703171B - Sample injector for reactor irradiation samples - Google Patents
Sample injector for reactor irradiation samples Download PDFInfo
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- CN107703171B CN107703171B CN201710709382.9A CN201710709382A CN107703171B CN 107703171 B CN107703171 B CN 107703171B CN 201710709382 A CN201710709382 A CN 201710709382A CN 107703171 B CN107703171 B CN 107703171B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/221—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis
- G01N23/222—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis using neutron activation analysis [NAA]
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Abstract
the invention discloses a sample injector for an in-pile irradiation sample, which comprises a rack, a motor, a sample loading platform, a sleeve mechanism, a sample injector and a gas transmission device. The sample conveying device comprises a motor, a sample carrying table, a sleeve mechanism, a sample conveying device and a sample conveying device, wherein the motor is fixedly arranged in a rack; the sample carrying table is connected with the rack in a sliding manner, the sleeve mechanism is fixedly connected with the rack, and the sample conveying device and the gas conveying device are respectively and fixedly connected with the sleeve mechanism; the shaft of the motor penetrates out of the top of the rack and the sample carrying table and is fixedly connected with the sample carrying table. The sample injector for the reactor irradiation samples is used as one of important and key components of a neutron activation sample transmission system, has the characteristics of compact structure, accurate rotation and positioning of a sample carrying table and high sample transmission efficiency, and has good operation stability and safety.
Description
Technical Field
the invention belongs to the technical field of neutron activation sample transmission technology and radioisotope preparation, and particularly relates to a sample injector for reactor irradiation samples.
Background
Neutron activation analysis is a highly efficient and sensitive method for analyzing and measuring trace elements, which is widely applied in the scientific research fields of life science, environmental science, geology, materials science, archaeology and the like, and the thermal neutron activation of a reactor is adopted and a nuclear analysis instrument such as a gamma spectrometer is used for qualitatively and quantitatively analyzing specified nuclides in a sample. For activated samples containing long-life nuclides, like most targets for radioisotope production, the irradiated sample boxes can be taken out from a reactor irradiation pipeline by a manual method, placed into a lead tank and transferred to a specified place for sample treatment or measurement, but the irradiation mode generally needs to load and sample the samples in a shutdown state, and the irradiation time and the irradiation dose cannot be accurately controlled. For samples with half-life of only minute magnitude or even second magnitude, especially samples to be measured requiring accurate limitation of irradiation time and/or neutron fluence, a sample rapid transmission device needs to be established between a sample injection room and an irradiator, a sample preparation room, a measurement room, a temporary storage room or even a waste storage room, so as to improve the transfer efficiency of the samples and ensure accurate control of irradiation conditions of the samples and effective measurement of target nuclides in the samples. At present, all on-line irradiation sample rapid transmission devices are pneumatic transmission devices, commonly called rabbit running devices, and a positive pressure or negative pressure mode is adopted to drive a sample box to reciprocate between working areas, and the transmission speed of the sample box is regulated by the air pressure intensity difference at two ends of a pipeline and is generally not lower than 10 m/s. In the core composition of the rabbit running device, the injector is one of them.
from the 20 th century and the 70 th century in China, China institute of engineering and physics, China and the national institute of atomic energy science and research and the like, simple rabbit running devices are built on reactors of China, adopted sample injectors are generally of cylinder type structures, sample boxes are placed into the sample injectors by adopting a manual method and are sent into the reactors one by one for irradiation, namely, the sample boxes are manually placed into sample inlets of double-station sample injectors, then the sample boxes are manually pushed into sample outlets of the sample injectors, valves are opened, compressed air is introduced into the sample injectors to send the sample boxes into reactor irradiation tubes, the sample boxes after irradiation are transferred into a measurement room or a sample preparation room to be processed, and each operation needs to be carried out on site by workers in the sample preparation room and the like. Although the rabbit running device used in China has some improvements on the whole, the sample feeding mode still mainly adopts a manual mode, the automation degree is low, the labor intensity is high, the vibration and noise damage caused by the operation of the sample feeder during the field operation of workers is high, and the prior art is difficult to meet the automatic sample feeding requirement of the highly-automatic sample transmission device on the online automatic, rapid and accurate irradiation and measurement of a large batch of various samples, various irradiation conditions and particularly second-order short-life nuclides. And a more efficient and safer neutron activation sample automatic sampling device which can realize the irradiation of a plurality of samples sequentially or selectively and automatically entering a reactor under the control of a program is not reported in the public.
Disclosure of Invention
the invention provides a sample injector for irradiated samples in pile, aiming at overcoming the defects that the sample injector in the prior art has lower automation degree, high harm of vibration and noise when workers operate on site by the sample injector, high labor intensity and difficulty in meeting the automatic sample injection requirements of a highly automated sample transmission device on the online automatic, rapid and accurate irradiation and measurement of a large batch of various samples and various irradiation conditions and particularly second-order short-life nuclides.
The technical scheme for realizing the invention is as follows:
the invention relates to a sample injector for a reactor irradiation sample, which is characterized by comprising a rack, a motor, a sample carrying table, a sleeve mechanism, a sample injector and a gas transmission device, wherein the motor is fixedly arranged in the rack, the sample carrying table is horizontally arranged on the rack, the sleeve mechanism is vertically arranged on the side of the rack, and the sample injector and the gas transmission device are vertically and correspondingly arranged above and below the sample carrying table; the sample carrying table is connected with the rack in a sliding manner, the sleeve mechanism is fixedly connected with the rack, and the sample conveying device and the gas conveying device are respectively and fixedly connected with the sleeve mechanism; the shaft of the motor penetrates out of the top of the rack and is fixedly connected with the sample loading platform.
The device comprises a rack, a sample loading platform, a positioning device, a connecting rod I, a vertical connecting rod II, a bearing, a nut and a sample loading platform, wherein the positioning device and the connecting rod I are fixedly connected with the rack in a horizontal mode; the sleeve mechanism is connected with the positioner in a sliding mode, the sleeve mechanism is fixedly connected with the rack through a connecting rod I, and the gas transmission device is fixedly connected with a connecting rod II.
the sample carrying table is in a ring shape, and is provided with a plurality of cylindrical sample carrying bins with the same structure, a light source and a through hole I which are arranged in pairs with the sample carrying bins; the sample loading device comprises a sample loading bin, a sample loading platform, a photoelectric sensor, a through hole II, a buffer cushion, a sample box, a light source, a motor shaft, a sample loading platform, a sample box, a photoelectric sensor, a sample box, a light source, a sample box, a light source and a light source, wherein the longitudinal axis of the sample loading bin is uniformly distributed on the same circumference with the motor shaft as the center of a circle, the central points of the sample loading bin are all positioned on the same plane, the sample loading bin is in threaded connection with the sample loading platform, the photoelectric sensor is fixedly arranged at the middle lower part of the sample loading bin, the central part of the bottom of the sample loading bin is provided with the; the diameter of the through hole II at the bottom of the sample loading bin is the same as that of the through hole I on the sample loading platform, and the through hole II and the through hole I are aligned; the sample conveying device and the gas conveying device are respectively arranged right above and below the sample carrying bin.
The sleeve mechanism comprises a sleeve I, a sleeve II, a sleeve III, a spring I, a spring II, a support rod I, a support rod II, a support rod III and a cylinder; the sleeve I, the sleeve II and the sleeve III are vertically arranged from inside to outside in sequence, the spring I and the spring II are respectively arranged between the top of the sleeve II and the support rod I and between the top of the sleeve III, and the middle of the sleeve III is connected with the positioner in a sliding manner; the support rod I, the support rod II and the support rod III are horizontally arranged, the support rod I and the support rod II are fixedly arranged at the upper end and the lower end of the sleeve I, the support rod III is fixedly arranged at the lower part of the sleeve III, and the collimator is fixedly arranged on the support rod I; the air cylinder is arranged between the support rod II and the support rod III, the air cylinder is sequentially and fixedly connected with the lower part of the sleeve II and the rack through the connecting rod I, and a push rod of the air cylinder is respectively connected with the support rod II and the support rod III in a sliding manner; the collimator is aligned with the light source.
The sample conveying device comprises a rubber pipe sleeve I, a connecting block I, a telescopic sealing sleeve I and a sample conveying pipe head which are fixedly connected in sequence from bottom to top, wherein the lower part of the sample conveying pipe head is arranged in a cavity formed by the rubber pipe sleeve I, the connecting block I and the sealing sleeve I, and the connecting block I is fixedly connected with a support rod I; the air delivery device comprises a rubber pipe sleeve II, a connecting block II, a telescopic sealing sleeve II and a T-shaped air delivery pipe which are fixedly connected from top to bottom in sequence, the upper part of the air delivery pipe is arranged in a cavity formed by the rubber pipe sleeve II, the connecting block II and the sealing sleeve II, the lower part of the air delivery pipe is fixedly connected with the connecting rod II, two ends of a pipeline at the lower part of the air delivery pipe are respectively provided with an electromagnetic valve, and the connecting block II is fixedly connected with a supporting rod III; the sample conveying pipe head is externally connected with an irradiator in the reactor through a sample conveying pipe, two ends of the gas conveying pipe are respectively and externally connected with a compressed air tank and a vacuum tank, and the sample conveying pipe head is fixedly connected with the rack through an externally connected support.
The motor, the photoelectric sensor, the light source, the collimator and the electromagnetic valve are respectively and electrically connected with an external controller.
the sleeve mechanism in be provided with adaptation boss and the recess that prevents relative rotation between sleeve pipe I, sleeve pipe II, the sleeve pipe III, the external diameter of sleeve pipe I and the internal diameter of sleeve pipe II, the external diameter of sleeve pipe II and the internal diameter of sleeve pipe III all cooperate the setting.
And twelve to twenty sample loading bins are arranged on the sample loading platform.
The sample loading platform and the longitudinal axis of the motor shaft are arranged in a superposition mode.
The longitudinal axial lines of a rubber pipe sleeve I, a connecting block I, a sealing sleeve I and a sample conveying pipe head in the sample conveying device are overlapped; the longitudinal axial lines of the rubber pipe sleeve II, the connecting block II, the sealing sleeve II and the gas transmission pipe in the gas transmission device are overlapped; the longitudinal axis lines of the rubber pipe sleeve I, the rubber pipe sleeve II and the sample carrying bin are arranged in a superposition mode.
the inner diameter of a rubber pipe sleeve I of the sample injector is larger than the inner diameter of the sample loading bin and smaller than the outer diameter of the sample loading bin; the inner diameter of a rubber pipe sleeve II of the gas transmission device is larger than the diameter of the through hole I on the sample loading platform; the inner diameters of the sample loading bin and the sample conveying pipe head are matched with the outer diameter of the sample box.
The simple working principle of the sample injector for the reactor irradiated samples is as follows: the external controller is used for instructing the motor to drive the sample carrying table to rotate, the collimator and the light source are aligned to realize accurate alignment of the sample carrying bin with the sample injector and the gas transmission device, and the sample box placed in the sample carrying bin is driven by compressed air to transfer from the sample injector to the irradiation device through the electromagnetic valve for sequentially switching on and off the gas transmission pipe on the sample injector and the electromagnetic valve on the external irradiation device vent pipe. When a sample box A which is placed in a sample carrying bin in advance needs to be fed into an irradiator for irradiation, a controller instructs a motor to drive a sample carrying table to rotate and accurately park the sample carrying bin with the sample box A under a rubber tube sleeve I of a sample conveying device, an air cylinder is opened to be connected with an electromagnetic valve on a compressed air tank pipeline, the air cylinder pushes a support rod II and a support rod III to move in a back direction and enables a sample conveying device arranged on the support rod I and an air conveying device arranged on the support rod III to move oppositely through sleeve transmission, so that the lower edge of the rubber tube sleeve I and the upper edge of the rubber tube sleeve II are respectively in close contact with the upper edge of the sample carrying bin and the bottom surface of the sample carrying table, meanwhile, the electromagnetic valve on an irradiator straight air pipe and the electromagnetic valve on the compressed air tank pipeline are opened, compressed air flow blows the sample box A into the irradiation pipe from the sample carrying bin through a sample conveying pipe head and an external sample conveying pipe and closes, realizing the ordered stacking irradiation of the sample boxes.
The sample injector for the reactor irradiated samples adopts the motor with high operation control precision as the drive of the sample loading table, greatly improves the automation degree of the sample injector, reduces the labor intensity of workers and the field operation hazard, and is favorable for meeting the requirements of the highly automated rabbit running device on automatic, rapid and accurate sample injection of various samples, various irradiation conditions and especially the on-line irradiation and measurement of second-order short-life nuclides. The sample injector has the advantages of compact structure, slight vibration and noise during operation, favorable improvement on the automation degree of a neutron activation analysis system, and good operation stability and safety.
Drawings
FIG. 1 is a schematic diagram of the general structure of a sample injector for irradiating a sample in a pile-up mode according to the present invention;
FIG. 2 is a schematic top view of a sample stage according to the present invention;
FIG. 3 is a schematic cross-sectional view of the sleeve mechanism of the present invention;
In the figure, 1, a rack 2, a motor 3, a positioner 4, a connecting rod I5, a connecting rod II 6, a sample loading bin 7, a sample loading table 8, a photoelectric sensor 9, a cushion pad 10, a light source 11, a sleeve I12, a sleeve II 13, a sleeve III 14, a spring I15, a spring II 16, a support rod I17, a support rod II 18, a support rod III 19, a cylinder 20, a collimator 21, a rubber sleeve I22, a connecting block I23, a sealing sleeve I24, a sample conveying pipe head 25, a rubber sleeve II 26, a connecting block II 27, a sealing sleeve II 28, a gas conveying pipe 29, a bearing 30 and a nut.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1
FIG. 1 is a schematic diagram of the general structure of an injector for stacking irradiation samples, FIG. 2 is a schematic diagram of the top structure of a sample carrying table in the invention, FIG. 3 is a schematic diagram of the cross-sectional structure of a sleeve mechanism in the invention, in FIGS. 1 to 3, the injector for stacking irradiation samples comprises a table 1, a motor 2, a sample carrying table 7, a sleeve mechanism, a sample injector and a gas injector, wherein the connection relationship is that the motor 2 is fixedly arranged in the table 1, the sample carrying table 7 is horizontally arranged on the table 1, the sleeve mechanism is vertically arranged at the side of the table 1, the sample injector and the gas injector are vertically and correspondingly arranged above and below the sample carrying table 7, the sample carrying table 7 is slidably connected with the table 1, the sleeve mechanism is fixedly connected with the table 1, and the sample injector and the gas injector are respectively fixedly connected with the sleeve mechanism;
The device comprises a rack 1, a positioner 3, a connecting rod I4, a vertical connecting rod II 5, a bearing 29, a nut 30 and a sample carrying table 7, wherein the positioner 3 and the connecting rod I4 are fixedly connected with each other horizontally at the side of the rack 1, the vertical connecting rod II 5 is fixedly arranged on the rack 1 right below a gas transmission device, the bearing 29 which is horizontally arranged is arranged on the rack 1 right above a motor 2, the shaft of the motor 2 penetrates through the bearing 29 and is tightly connected with the bearing 29, the nut 30 is arranged at the top end of the shaft of the motor 2; the sleeve mechanism is connected with the positioner 3 in a sliding manner, the sleeve mechanism is fixedly connected with the rack 1 through a connecting rod I4, and the gas transmission device is fixedly connected with a connecting rod II 5;
The sample carrying table 7 is annular, and a plurality of cylindrical sample carrying bins with the same structure, a light source and a through hole I which are arranged in a manner of being matched with the sample carrying bins are arranged on the sample carrying table 7; the longitudinal axis of the sample carrying bin is uniformly distributed on the same circumference with the motor 2 shaft as the center of a circle, the center points of the sample carrying bin are all positioned on the same plane, the sample carrying bin is in threaded connection with a sample carrying table 7, a photoelectric sensor is fixedly arranged at the middle lower part of the sample carrying bin, a through hole II is arranged at the center of the bottom of the sample carrying bin, a buffer pad is arranged in the sample carrying bin, a sample box is placed in the sample carrying bin, a light source is fixedly arranged at the same position on the longitudinal axis connecting line of the sample carrying bin and the motor 2 shaft, and the sample carrying bin 6, the photoelectric sensor 8, the buffer pad 9 and the light source 10 are correspondingly arranged; the diameter of the through hole II at the bottom of the sample loading bin 6 is the same as that of the through hole I on the sample loading platform 7, and the through holes II and the through hole I are aligned; the sample conveying device and the gas conveying device are respectively arranged right above and right below the sample loading bin 6;
The sleeve mechanism comprises a sleeve I11, a sleeve II 12, a sleeve III 13, a spring I14, a spring II 15, a support rod I16, a support rod II 17, a support rod III 18 and a cylinder 19; the sleeve I11, the sleeve II 12 and the sleeve III 13 are vertically arranged from inside to outside in sequence, the spring I14 and the spring II 15 are respectively arranged between the top of the sleeve II 12 and the support rod I16 and between the top of the sleeve III 13, and the middle of the sleeve III 13 is connected with the positioner 3 in a sliding manner; the support I16, the support II 17 and the support III 18 are horizontally arranged, the support I16 and the support II 17 are fixedly arranged at the upper end and the lower end of the sleeve I11, the support III 18 is fixedly arranged at the lower part of the sleeve III 13, and the collimator 20 is fixedly arranged on the support I16; the cylinder 19 is arranged between the support rod II 17 and the support rod III 18, the cylinder 19 is fixedly connected with the lower part of the sleeve II 12 and the rack 1 in sequence through a connecting rod I4, and a push rod of the cylinder 19 is respectively connected with the support rod II 17 and the support rod III 18 in a sliding manner; the collimator 20 is aligned with the light source 10;
the sample conveying device comprises a rubber pipe sleeve I21, a connecting block I22, a telescopic sealing sleeve I23 and a sample conveying pipe head 24 which are fixedly connected from bottom to top in sequence, wherein the lower part of the sample conveying pipe head 24 is arranged in a cavity formed by the rubber pipe sleeve I21, the connecting block I22 and the sealing sleeve I23, and the connecting block I22 is fixedly connected with a support rod I16; the air delivery device comprises a rubber pipe sleeve II 25, a connecting block II 26, a telescopic sealing sleeve II 27 and a T-shaped air delivery pipe 28 which are fixedly connected from top to bottom in sequence, the upper part of the air delivery pipe 28 is arranged in a cavity formed by the rubber pipe sleeve II 25, the connecting block II 26 and the sealing sleeve II 27, the lower part of the air delivery pipe 28 is fixedly connected with a connecting rod II 5, two ends of a pipeline at the lower part of the air delivery pipe 28 are respectively provided with an electromagnetic valve, and the connecting block II 26 is fixedly connected with a supporting rod III 18; the sample conveying pipe head 24 is externally connected with an irradiator in the reactor through a sample conveying pipe, two ends of the gas conveying pipe 28 are respectively externally connected with a compressed air tank and a vacuum tank, and the sample conveying pipe head 24 is also fixedly connected with the rack 1 through an externally connected bracket;
the motor 2, the photoelectric sensor 8, the light source 10, the collimator 20 and the electromagnetic valve are respectively and electrically connected with an external controller, as shown in fig. 1 to 3.
The sleeve mechanism in be provided with adaptation boss and the recess that prevents relative rotation between sleeve I11, sleeve II 12, sleeve III 13, the external diameter of sleeve I11 and the internal diameter of sleeve II 12, the external diameter of sleeve II 12 and the internal diameter of sleeve III 13 all cooperate the setting. As shown in fig. 3.
twelve to twenty sample loading bins are arranged on the sample loading platform 7;
The sample carrying table 7 is arranged in a manner of being superposed with the longitudinal axis of the motor 2 shaft;
The longitudinal axis lines of a rubber pipe sleeve I21, a connecting block I22, a sealing sleeve I23 and a sample conveying pipe head 24 in the sample conveying device are overlapped; the longitudinal axial lines of a rubber pipe sleeve II 25, a connecting block II 26, a sealing sleeve II 27 and a gas conveying pipe 28 in the gas conveying device are overlapped; the longitudinal axis lines of the rubber pipe sleeve I21, the rubber pipe sleeve II 25 and the sample loading bin 6 are overlapped;
the inner diameter of a rubber pipe sleeve I21 of the sample conveying device is larger than the inner diameter of the sample carrying bin 6 and smaller than the outer diameter of the sample carrying bin 6, the inner diameter of a rubber pipe sleeve II 25 of the gas conveying device is larger than the diameter of a through hole I on the sample carrying table 7, and the inner diameters of the sample carrying bin 6 and the sample conveying pipe head 24 are matched with the outer diameter of a sample box, as shown in figures 1-3.
The working process of the invention is as follows, the external controller is used for instructing the motor 2 to drive the sample carrying table 7 to rotate, and the collimator 20 and the light source 10 are used for aligning, so that the sample carrying bin 6 and the sample conveying device and the gas conveying device are accurately aligned; the electromagnetic valve on the compressed air tank pipeline and the electromagnetic valve on the external irradiator are connected through the orderly switch air conveying pipe 28, the sample box placed in the sample loading bin 6 is transferred into the irradiator to be irradiated under the drive of compressed air, and the ordered sample introduction of a plurality of sample boxes is realized. When a sample box A which is placed in the sample carrying bin 6 in advance needs to be fed into the irradiator for irradiation, the controller instructs the motor 2 to drive the sample carrying table 7 to rotate, the sample carrying bin 6 provided with the sample box A is accurately placed right below a rubber tube sleeve I21 of the sample conveying device, the air cylinder 19 is opened to be connected with an electromagnetic valve on a compressed air tank pipeline, the air cylinder 19 pushes the support rod II 17 and the support rod III 18 to move backwards, the sample conveying device arranged on the support rod I16 and the air conveying device arranged on the support rod III 18 move oppositely through sleeve transmission, the lower edge of the rubber tube sleeve I21 and the upper edge of the rubber tube sleeve II 25 are respectively in close contact with the upper edge of the sample carrying bin 6 and the bottom surface of the sample carrying table 7, meanwhile, the electromagnetic valve on the irradiator air ventilation tube and the air conveying tube 28 are opened to be connected with the electromagnetic valve on the compressed air tank pipeline, and compressed air flow enables the sample box A to pass through the sample conveying tube head, The external sample conveying pipe is blown into the irradiation pipe of the irradiator and the electromagnetic valve is closed, so that the reactor irradiation of the sample box A is realized.
According to the sample injector for the reactor irradiation samples, the sample loading bin 6 and the inner diameter of the sample conveying pipe head 24 are matched with the outer diameter of the sample box, so that the smooth inlet and outlet of the sample box are ensured, and the sample box has a faster movement speed under the same pressure difference.
The sample injector for the radiation samples stacked in the invention monitors the condition that the sample box enters and exits the sample loading bin through the photoelectric sensor arranged on the sample loading bin.
In this embodiment, twelve sample loading bins are provided on the sample loading platform 7, and the sample loading bin 6 is one of the sample loading bins; each sample loading bin is provided with a photoelectric sensor, a light source is arranged on a central connecting line of the sample loading bin and the shaft of the motor 2, and the sample loading bin 6 is correspondingly provided with a photoelectric sensor 8 and a light source 10.
Example 2
The present embodiment is the same as embodiment 1, except that fourteen sample loading chambers are provided on the sample loading platform 7, and fourteen light sources are correspondingly provided.
example 3
The present embodiment is the same as embodiment 1, except that sixteen sample loading bins are provided on the sample loading platform 7, and sixteen light sources are correspondingly provided.
Example 4
The present embodiment is the same as embodiment 1, except that eighteen sample loading chambers are provided on the sample loading platform 7, and eighteen light sources are correspondingly provided.
example 5
The present embodiment is the same as embodiment 1, except that twenty sample loading chambers are provided on the sample loading platform 7, and twenty light sources are correspondingly provided.
Claims (10)
1. an injector for reactor irradiation samples, which is characterized in that: the sample injector for the stacked irradiation samples comprises a rack (1), a motor (2), a sample carrying table (7), a sleeve mechanism, a sample injector and a gas transmission device, wherein the motor (2) is fixedly arranged in the rack (1), the sample carrying table (7) is horizontally arranged on the rack (1), the sleeve mechanism is vertically arranged on the side of the rack (1), and the sample injector and the gas transmission device are vertically and correspondingly arranged above and below the sample carrying table (7); the sample carrying table (7) is connected with the rack (1) in a sliding manner, the sleeve mechanism is fixedly connected with the rack (1), and the sample conveying device and the gas conveying device are respectively fixedly connected with the sleeve mechanism; the shaft of the motor (2) penetrates out of the top of the rack (1) and is fixedly connected with the sample carrying table (7);
The device is characterized in that a positioner (3) and a connecting rod I (4) which are fixedly connected are horizontally arranged on the side of the rack (1), an upright connecting rod II (5) is fixedly arranged on the rack (1) right below the gas transmission device, a bearing (29) which is horizontally placed is arranged on the rack (1) right above the motor (2), the shaft of the motor (2) penetrates through the bearing (29) and is tightly connected with the bearing (29), a nut (30) is arranged at the top end of the shaft of the motor (2), and the nut (30) is tightly connected with the sample loading platform (7); the sleeve mechanism is connected with the positioner (3) in a sliding mode, the sleeve mechanism is fixedly connected with the rack (1) through a connecting rod I (4), and the gas transmission device is fixedly connected with a connecting rod II (5).
2. The sample injector for irradiated samples in pile according to claim 1, wherein: the sample carrying platform (7) is in a ring shape, and a plurality of cylindrical sample carrying bins with the same structure, a light source and a through hole I which are arranged in pairs with the sample carrying bins are arranged on the sample carrying platform (7); the longitudinal axis of the sample carrying bin is uniformly distributed on the same circumference with the shaft of the motor (2) as the center of a circle, the center points of the sample carrying bin are all positioned on the same plane, the sample carrying bin is in threaded connection with the sample carrying platform (7), a photoelectric sensor is fixedly arranged at the middle lower part of the sample carrying bin, a through hole II is arranged at the center of the bottom of the sample carrying bin, a buffer pad is arranged in the sample carrying bin, a sample box is placed in the sample carrying bin, a light source is fixedly arranged at the same position on the connecting line of the sample carrying bin and the longitudinal axis of the shaft of the motor (2), and the sample carrying bin (6), the photoelectric sensor (8), the buffer pad (9) and the light source (10) are correspondingly arranged; the diameter of the through hole II at the bottom of the sample loading bin (6) is the same as that of the through hole I on the sample loading platform (7), and the through holes are aligned; the sample conveying device and the gas conveying device are respectively arranged right above and right below the sample carrying bin (6).
3. The sample injector for irradiated samples in pile according to claim 1, wherein: the sleeve mechanism comprises a sleeve I (11), a sleeve II (12), a sleeve III (13), a spring I (14), a spring II (15), a support rod I (16), a support rod II (17), a support rod III (18) and a cylinder (19); the sleeve I (11), the sleeve II (12) and the sleeve III (13) are vertically arranged from inside to outside in sequence, the spring I (14) and the spring II (15) are respectively arranged between the top of the sleeve II (12) and the support rod I (16) and between the top of the sleeve III (13), and the middle of the sleeve III (13) is connected with the positioner (3) in a sliding manner; the support rod I (16), the support rod II (17) and the support rod III (18) are horizontally arranged, the support rod I (16) and the support rod II (17) are fixedly arranged at the upper end and the lower end of the sleeve I (11), the support rod III (18) is fixedly arranged at the lower part of the sleeve III (13), and the collimator (20) is fixedly arranged on the support rod I (16); the air cylinder (19) is arranged between the support rod II (17) and the support rod III (18), the air cylinder (19) is fixedly connected with the lower part of the sleeve II (12) and the rack (1) in sequence through the connecting rod I (4), and a push rod of the air cylinder (19) is respectively connected with the support rod II (17) and the support rod III (18) in a sliding manner; the collimator (20) is aligned with the light source (10).
4. The sample injector for irradiated samples in pile according to claim 1, wherein: the sample conveying device comprises a rubber pipe sleeve I (21), a connecting block I (22), a telescopic sealing sleeve I (23) and a sample conveying pipe head (24), wherein the rubber pipe sleeve I (21), the connecting block I (22) and the telescopic sealing sleeve I (23) are fixedly connected in sequence from bottom to top, the lower part of the sample conveying pipe head (24) is arranged in a cavity formed by the rubber pipe sleeve I (21), the connecting block I (22) and the sealing sleeve I (23), and the connecting block I (22) is fixedly connected with a support rod I; the air conveyor comprises a rubber pipe sleeve II (25), a connecting block II (26), a telescopic sealing sleeve II (27) and a T-shaped air conveying pipe (28), wherein the rubber pipe sleeve II (25), the connecting block II (26), the telescopic sealing sleeve II (27) and the T-shaped air conveying pipe are fixedly connected from top to bottom in sequence, the upper part of the air conveying pipe (28) is arranged in a cavity formed by the rubber pipe sleeve II (25), the connecting block II (26) and the sealing sleeve II (27), the lower part of the air conveying pipe (28) is fixedly connected with a connecting rod II (5), two ends of a pipeline at the lower part of the air conveying pipe (28) are; the sample conveying pipe head (24) is externally connected with an irradiator in the reactor through a sample conveying pipe, two ends of the gas conveying pipe (28) are respectively and externally connected with a compressed air tank and a vacuum tank, and the sample conveying pipe head (24) is also fixedly connected with the rack (1) through an externally connected support.
5. The sample injector for irradiated samples in pile according to claim 1 or 3, characterized in that: the sleeve mechanism in be provided with adaptation boss and the recess that prevents relative rotation between sleeve pipe I (11), sleeve pipe II (12), sleeve pipe III (13), the external diameter of sleeve pipe I (11) and the internal diameter of sleeve pipe II (12), the external diameter of sleeve pipe II (12) and the internal diameter of sleeve pipe III (13) all cooperate the setting.
6. The sample injector for irradiated samples in pile according to claim 1 or 2, characterized in that: twelve to twenty sample loading bins are arranged on the sample loading platform (7).
7. The sample injector for irradiated samples in pile according to claim 1, wherein: the sample carrying platform (7) and the longitudinal axis of the shaft of the motor (2) are arranged in a superposition way.
8. The sample injector for irradiated samples in pile according to claim 1 or 4, wherein: the longitudinal axis lines of a rubber tube sleeve I (21), a connecting block I (22), a sealing sleeve I (23) and a sample conveying tube head (24) in the sample conveying device are overlapped; the longitudinal axis lines of the rubber pipe sleeve II (25), the connecting block II (26), the sealing sleeve II (27) and the gas conveying pipe (28) in the gas conveying device are overlapped; the longitudinal axis lines of the rubber pipe sleeve I (21), the rubber pipe sleeve II (25) and the sample loading bin (6) are arranged in a superposition mode.
9. The sample injector for irradiated samples in pile according to claim 4, wherein: the inner diameter of a rubber pipe sleeve I (21) of the sample injector is larger than the inner diameter of the sample loading bin (6) and smaller than the outer diameter of the sample loading bin (6); the inner diameter of a rubber pipe sleeve II (25) of the gas transmission device is larger than the diameter of a through hole I on the sample loading platform (7); the inner diameters of the sample loading bin (6) and the sample conveying pipe head (24) are matched with the outer diameter of the sample box.
10. The sample injector for irradiated samples in pile according to claim 2 or 3, characterized in that: the motor (2), the photoelectric sensor (8), the light source (10), the collimator (20) and the electromagnetic valve are respectively and electrically connected with an external controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710709382.9A CN107703171B (en) | 2017-08-18 | 2017-08-18 | Sample injector for reactor irradiation samples |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710709382.9A CN107703171B (en) | 2017-08-18 | 2017-08-18 | Sample injector for reactor irradiation samples |
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| CN107703171A CN107703171A (en) | 2018-02-16 |
| CN107703171B true CN107703171B (en) | 2019-12-13 |
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| CN201710709382.9A Active CN107703171B (en) | 2017-08-18 | 2017-08-18 | Sample injector for reactor irradiation samples |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112927835B (en) * | 2021-01-22 | 2024-02-20 | 散裂中子源科学中心 | Mono-energy neutron selector and control system thereof |
| CN115267882A (en) * | 2021-04-29 | 2022-11-01 | 核工业西南物理研究院 | Fusion reactor irradiation sample injector |
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