CN101441184A - Method and device for performing crude wood quarantine irradiation by X ray - Google Patents
Method and device for performing crude wood quarantine irradiation by X ray Download PDFInfo
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- CN101441184A CN101441184A CNA2007101777008A CN200710177700A CN101441184A CN 101441184 A CN101441184 A CN 101441184A CN A2007101777008 A CNA2007101777008 A CN A2007101777008A CN 200710177700 A CN200710177700 A CN 200710177700A CN 101441184 A CN101441184 A CN 101441184A
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Abstract
The invention relates to a method and device for quarantine radiation of log by using X ray. The method comprises loading the log into a log-carrying device (S1) by using a loading mechanism; the log-carrying device entering into a radiation channel (S2); the log-carrying device rapid getting on towards a radiation area (S3) formed from an accelerator in the middle of the radiation channel; the log-carrying device passing through the radiation area in an uniform speed so as to carry out the quarantine radiation treatment (S4) of the log in the log-carrying device by using the X ray generated by the accelerator; the log-carrying device rapid getting away from a radiation area (S5); and the log-carrying device getting away from the radiation channel to an unloading ground (S6). The device of the invention comprises a radiation channel (1), a log-carrying device (2) for conveying log along the radiation channel (1), an accelerator (3) for generating X ray which is distributed in the middle of the radiation channel (1), a shielding structure (4) for shielding the X ray generated by the accelerator (3), and an actuator (5) for dragging the log-carrying device (2).
Description
Technical field
The present invention relates to agriculture and forestry product quarantine irradiation process field, relate more specifically to utilize X ray to carry out the method and apparatus of crude wood quarantine irradiation.
Background technology
Along with the high speed development of forestry industry, strengthen the inspection and quarantine of imported timber and Wooden package has been become an extremely urgent job to prevent that dangerous insect pest from propagating.Traditional crude wood quarantine treatment technology adopts the method for methyl bromide fumigation, this method exists following shortcoming: Celfume can destroy atmospheric ozone layer, according to Montreal Protocol in 1992, in order to safeguard atmospheric ozone layer, developed country was before 2005, and developing country progressively banned use of Celfume to carry out chemical fumigation in the past and handles in 2015; The use of Celfume is subjected to the restriction of environment temperature, and temperature is lower than 5 ℃ and just can not uses Celfume to fumigate processing; Celfume is a never poison, is diffused in the atmosphere meeting severe contamination resident's living environment after fumigating; The methyl bromide fumigation processing speed is slow, and finishing once stifling processing need seal log more than 16 hours.Simultaneously, at some port, especially at the sea-freight port, log must be fumigated in the anchorage after entering the territory, and this had both brought very big difficulty to quarantine, had taken a large amount of berths and harbour place again.
Summary of the invention
In order to address the above problem, the invention provides a kind of method and apparatus that utilizes X ray to carry out crude wood quarantine irradiation, utilize this method and this device can the efficient height, safe in utilization, do not destroy environment, easy to operate situation is issued to the purpose that log is quarantined and handled.For this reason, in this method and this device, the X ray that the electron beam target practice that utilization produces by many accelerators is produced carries out crude wood quarantine irradiation to be handled, and makes the minimal absorption dosage in the log reach quarantine standard so that insect is sterile or dead.
The method of utilizing X ray to carry out crude wood quarantine irradiation according to the present invention comprises the steps:
S1: utilize loader mechanism that log is packed into and carry wooden device;
S2: carry wooden device and enter the irradiation passage;
S3: carry wooden device fast near the irradiated site that forms by accelerator at the middle part of irradiation passage;
S4: carry wooden device with even velocity by irradiated site, so that utilize by X ray that accelerator produced to carrying log in the wooden device radiation treatment of quarantining;
S5: carry wooden device fast away from irradiated site;
S6: a year wooden device leaves the irradiation passage and goes to unloading apron.
Preferably, in step S4, carry wooden device and when arriving irradiated site, slow down, and accelerator goes out bundle simultaneously, carries wooden device then and advances in irradiated site with even velocity; Wooden device quickens when leaving irradiated site and the while accelerator stops bundle and carry.
Preferably, will speed up device with four be one group form be arranged in symmetrically the irradiation passage around so that the absorbed dose in the log as far as possible evenly distributes.
Preferably, carry wooden device and handle required minimal absorption dosage by the speed of irradiated site according to crude wood quarantine irradiation and adjust, and that crude wood quarantine irradiation is handled the entrained pest species of required minimal absorption dosage and log is relevant.
In one embodiment of the invention, this accelerator is an electron linear accelerator, and practicing shooting by the electron beam that this electron linear accelerator produced produces X ray.Also can use the accelerator of other type in other embodiments.
The device that utilizes X ray to carry out crude wood quarantine irradiation according to the present invention comprises the irradiation passage, is distributed in the accelerator that is used to produce X ray at the middle part of irradiation passage, is used for carrying carrying wooden device, be used to shield the shielding construction of the X ray that is produced by accelerator and be used to drag the actuator that carries wooden device of log along the irradiation passage.
Preferably, described accelerator is that one group form is distributed in around the middle part of irradiation passage symmetrically with four, and wherein said accelerator is preferably electron linear accelerator, and practicing shooting by the electron beam that this electron linear accelerator produced produces X ray.
Preferably, also be provided with scan box, be attached with deflection magnet, be used to make the electron beam of drawing from scan box vertically to practice shooting, so that make the absorbed-dose distribution in the log even in the outlet of described scan box at the front end of accelerator.
In one embodiment of the invention, described shielding construction comprises barrier shield, radiation source guard chamber and canyon door, wherein this radiation source guard chamber is positioned at the middle part of irradiation passage, the passage that this canyon door provides personnel to pass in and out the radiation source guard chamber, this barrier shield are positioned at the both sides and the top of irradiation passage.
Preferably, the thickness of described barrier shield along with radiation source, be accelerator distance increase and successively decrease.
Preferably, on the gateway of irradiation passage and canyon door, be provided with safety interlock, cause the accident to avoid personnel to be strayed into.
In one embodiment of the invention, irradiation passage, barrier shield, radiation source guard chamber and canyon door constitute a semi-enclosed zone, in this zone with interior be the radiation protection district.
Preferably, the irradiation passage is a S type passage, and this passage itself constitutes a simple labyrinth, so that reduce the influence of ray to entrance and exit of the passage effectively.
Preferably,, on described barrier shield, set up the concrete buttress, be used to reduce the scattering of ray on described barrier shield the influence outside the irradiation passage in close gateway one side of the bend of irradiation passage.
Preferably, the dual-purpose transport trolley of rail that described year wooden device is self-powered device, outside the irradiation passage, can move, and after entering the irradiation passage, enter slide rail immediately, under the promotion of self-powered device, on slide rail, move by pulling of actuator.
Preferably, do not establish base plate, do not establish the compartment wall all around,, as much as possible utilize the energy of X ray to reduce to the stopping of X ray in the bottom surface of described year wooden device.
In a preferred embodiment of the invention, described year wooden device comprises set of wheels, chassis and column.
Preferably, described column is positioned at the both sides along its length of carrying wooden device, each 4 of every sides.
Preferably, described chassis is recessed in the middle of being designed on its length direction, so that avoid or reduce the possibility that loader mechanism contacts with described chassis when loading log.
Preferably, wooden device also comprised variable-frequency motor and motor reducer in described year, can move on slide rail with variable speed after entering the irradiation passage so that guarantee to carry wooden device, the absorbed dose that receives when the irradiation with the log that guarantees to carry in the wooden device satisfies the requirement that crude wood quarantine irradiation is handled required minimal absorption dosage.
Preferably, described accelerator is along the direct of travel that carries wooden device, promptly be interspersed in the both sides of irradiation passage, so that avoid the equipment damage that causes owing to the correlation between the accelerator.In addition, the energy of employed accelerator is selected as between 10-16MeV, and the induced radioactivity that is produced to guarantee can not work the mischief to the staff and the public.
Beneficial effect of the present invention:
The X ray that utilization of the present invention has strong penetration capacity produces direct or indirect biological effect to the insect in the log, and the insect that makes in the log is sterile maybe can not to be grown to the purpose of next worm attitude thereby reach.Compare with prior art, utilize the quarantine of apparatus of the present invention and the inventive method to handle to have the efficient height, safe in utilization, do not destroy environment, advantage such as easy to operate.In addition,, shortened the holding time in berth and place, harbour greatly, accelerated the turnaround speed of harbour goods because the efficient that quarantine is handled improves.
In addition, accelerator of the present invention is a kind of electric equipment, can not pollute environment around the atmosphere etc.; Accelerator is not influenced by ambient temperature in use, as long as power supply meets the demands, just is used at any time; Accelerator only just produces X ray when work, no longer produce X ray after shutdown, does not therefore exist in following problem such as waste disposal that must solve of situation of using radioactive isotope power supply.
Description of drawings
Other features and advantages of the present invention can be from below in conjunction with obtaining the detailed description of accompanying drawing to embodiments of the invention, wherein:
Fig. 1 is the structural principle synoptic diagram that utilizes the device that X ray carries out crude wood quarantine irradiation according to of the present invention;
Fig. 2 is the synoptic diagram of the layout of accelerator;
Fig. 3 is the level line synoptic diagram of the absorbed-dose distribution in the log that carries after through four accelerator irradiation in the wooden device;
Fig. 4 is the synoptic diagram of the shielding construction in apparatus of the present invention;
Fig. 5 is the structural representation that carries wooden device in apparatus of the present invention; And
Fig. 6 is the schematic flow sheet that utilizes X ray to carry out the method for crude wood quarantine irradiation according to of the present invention.
Embodiment
Following embodiment is used to illustrate the present invention, but is not used for limiting the scope of the invention.
Figure 1 illustrates the structural principle synoptic diagram that utilizes the device that X ray carries out crude wood quarantine irradiation according to of the present invention.This device that utilizes X ray to carry out crude wood quarantine irradiation comprises irradiation passage 1, be used for along irradiation passage 1 carry log carry wooden device 2, be distributed in the middle part of irradiation passage 1 the accelerator 3 that is used to produce X ray, be used to shield the shielding construction 4 of the X ray that is produced by accelerator 3 and be used to drag the actuator 5 that carries wooden device.
As shown in fig. 1, accelerator 3 is disposed in around the middle part of irradiation passage 1 in apparatus of the present invention, forms irradiated site when this accelerator work.In a preferred embodiment of the invention, one group of 4 accelerator is distributed in around the middle part of irradiation passage 1, as shown in Figure 2 symmetrically.Accelerator 3 and target 16 are interspersed as shown in fig. 1 like that, so that avoid the equipment damage that causes owing to the correlation between the accelerator in the both sides of irradiation passage 1.In this embodiment, this accelerator 3 is an electron linear accelerator, and practicing shooting by the electron beam that this electron linear accelerator produced produces X ray.Certainly, also can use the accelerator of other type in other embodiments.In the embodiment shown in Fig. 2, by making the electron beam by accelerator produced of drawing be deflected the vertical target practice 16 in back by near the deflection magnet the outlet of scan box 15 17 from the scan box 15 that is arranged on the accelerator front end, produce X ray, so that the absorbed dose in the log is as far as possible evenly distributed.Reasonably, many group accelerators 3 can be set according to the requirement of quarantine treatment capacity.
In the embodiment shown in Fig. 1, irradiation passage 1 is set to S type structure, and irradiation passage 1 itself constitutes a simple labyrinth, so that reduce the influence of ray to entrance and exit of the passage effectively.Place, gateway at irradiation passage 1 is provided with safety interlock, causes the accident so that avoid personnel to be strayed into.Shielding construction 4 is the irradiated sites with X-ray protection function.The dual-purpose transport trolley of rail that to carry wooden device 2 are self-powered devices can move on prevailing roadway and sliding rail special.
Sigmatron has very strong penetration capacity, is fit to very much be used for log in enormous quantities is carried out irradiation.But X ray is decayed by index law in material, the distribution of X ray on all directions of space that produces by the electron beam target practice in electron linear accelerator is extremely uneven simultaneously, therefore must and carry a wooden device size to the quantity and the layout of accelerator and carry out suitable optimization, so that reasonably utilize energy, thereby increase economic efficiency.Through a large amount of calculating, consider operability simultaneously, having selected the cross section in embodiment as shown in Figure 2 is foursquare year wooden device, make one group of 4 accelerator 3 be distributed in this year of wooden device around, can reach radiation treatment effect preferably.
Fig. 3 is the level line synoptic diagram of the absorbed-dose distribution in the log that carries after through four accelerator irradiation in the wooden device.As can be seen from Figure 3, adopt this layout of four accelerators shown in Fig. 2 to carry out radiation treatment, absorbed dose in the log that carries in the wooden device is evenly distributed basically, thereby can reach the utilization factor of radiation treatment effect and beam power preferably.
The accelerator of it should be noted that in the present invention to be adopted is a kind of electric equipment, and it is not influenced by ambient temperature in use, as long as power supply meets the demands, just is used at any time; And accelerator only just produces X ray when work, no longer produce X ray after shutdown, does not therefore exist in following problem such as waste disposal that must solve of situation of using radioactive isotope power supply.
In addition, sigmatron irradiation during material can with the element generation photonuclear reaction in the material, thereby generate some radioactive isotopes.Simultaneously, X ray also may produce neutron activation with substance reaction.These reactions all can produce induced radioactivity, and energy is high more, and the influence of induced radioactivity is just big more.On the other hand, select the low excessively accelerator of energy then can influence the treatment effeciency of system.Therefore, for personal safety, the device security that guarantees social safety, staff and the public, take into account treatment effeciency simultaneously again, the induced radioactivity influence of the X ray of reply different-energy is estimated comparatively accurately.Preferably select the accelerator of energy between 10-16MeV.Energy with employed accelerator is chosen as 10MeV in a preferred embodiment of the invention, and the induced radioactivity that is produced to guarantee can not work the mischief to the staff and the public.
Figure 4 illustrates the synoptic diagram of the shielding construction in apparatus of the present invention.This shielding construction 4 comprises barrier shield 6, radiation source guard chamber 7 and canyon door 8.Radiation source guard chamber 7 is positioned at the middle part of irradiation passage 1, wherein radiation source, be that accelerator 3 is positioned at this radiation source guard chamber 7.Canyon door 8 provides the maintainer to pass in and out the passage of radiation source guard chamber 7.Canyon door 8 is provided with safety interlock, is used to avoid personnel to be strayed into radiation source guard chamber 7.Barrier shield 6 is set at the both sides and the top of irradiation passage 1, and wherein the thickness of this barrier shield 6 is along with the increase of the distance of radiation source and successively decrease.
In improved embodiment of the present invention, in close gateway one side of the bend of irradiation passage 1, on barrier shield 6, set up concrete buttress 9, be used to reduce the scattering of ray on barrier shield 6 to the influence outside the irradiation passage 1, as shown in Figure 4.
In an embodiment of the present invention, irradiation passage 1, barrier shield 6, radiation source guard chamber 7 and canyon door 8 are formed a semi-enclosed zone, are the radiation protection district in this zone.
Owing to the present invention relates to direct irradiation, therefore need the very big irradiation passage in cross section allow and carry wooden device turnover to log in enormous quantities.Yet traditional labyrinth structure is inapplicable with regard to the irradiation passage.Therefore adopt the shielding construction of S type channel mask wall to satisfy the requirement of shelter at place, entrance and exit of the passage in the present invention with band buttress, make that the leakage dose levels outside the irradiation passage can reach the related request of international " particle accelerator radiation protection regulation " when accelerator is worked, thereby guarantee public security.
Figure 5 illustrates the structural representation that carries wooden device 2 in apparatus of the present invention.This year, wooden device 2 comprised set of wheels 10, column 11 and chassis 12, and its central post 11 is positioned at the both sides along its length of carrying wooden device 2, and each 4 of every sides tumble to prevent log; Chassis 12 is recessed in the middle of being designed on its length direction, to avoid or to reduce the possibility that loader mechanism contacts with chassis 12 when loading log.
In the present embodiment, carrying wooden device 2 is the dual-purpose transport trolley of rail, can move by pulling of actuator 5 outside irradiation passage 1, and can move on slide rail by self-powered device after entering irradiation passage 1.In the present embodiment, carry wooden device 2 and comprise variable-frequency motor 13 and motor reducer 14 in addition, can move on slide rail with variable speed after entering irradiation passage 1 so that guarantee to carry wooden device 2, the absorbed dose that receives when the irradiation with the log that guarantees to carry in the wooden device satisfies the requirement that crude wood quarantine irradiation is handled required minimal absorption dosage.
According to the flow process of utilizing the method that X ray carries out crude wood quarantine irradiation of the present invention as shown in Figure 6, this method may further comprise the steps:
S1: utilize loader mechanism that log is packed into and carry wooden device;
S2: carry wooden device and enter the irradiation passage;
S3: carry wooden device fast near the irradiated site that forms by accelerator at the middle part of irradiation passage;
S4: carry wooden device with even velocity by irradiated site, so that utilize by X ray that accelerator produced to carrying log in the wooden device radiation treatment of quarantining;
S5: carry wooden device fast away from irradiated site;
S6: a year wooden device leaves the irradiation passage and goes to unloading apron.
In step S4, carry wooden device and when arriving irradiated site, slow down, and accelerator goes out bundle simultaneously, carries wooden device then and advances in irradiated site with even velocity; Wooden device quickens when leaving irradiated site and the while accelerator stops bundle and carry.
In the method, described speed can be handled required minimal absorption dosage according to crude wood quarantine irradiation and adjust, required minimal absorption dosage is bigger, it is just slower by the speed of irradiated site to carry wooden device, otherwise, required minimal absorption dosage is less, and it is just very fast by the speed of irradiated site to carry wooden device.In addition, as skilled in the art will understand, it is relevant that crude wood quarantine irradiation is handled the entrained pest species of required minimal absorption dosage and log.
Carry out the method and apparatus that crude wood quarantine irradiation is handled though described the X ray that utilizes according to the present invention by specific embodiment, but those skilled in the art can be applied to this method and this device in other field solving irradiation, the quarantine problem of article, so those skilled in the art are that all corresponding modification, improvement, expansion and the application carried out on the basis of the embodiments of the invention that this is given all should fall in the scope of the present invention as defined by the appended claims.
Claims (20)
1, a kind of method of utilizing X ray to carry out crude wood quarantine irradiation is characterized in that, this method comprises the steps:
S1: utilize loader mechanism that log is packed into and carry wooden device;
S2: carry wooden device and enter the irradiation passage;
S3: carry wooden device fast near the irradiated site that forms by accelerator at the middle part of irradiation passage;
S4: carry wooden device with even velocity by irradiated site, so that utilize by X ray that accelerator produced to carrying log in the wooden device radiation treatment of quarantining;
S5: carry wooden device fast away from irradiated site;
S6: a year wooden device leaves the irradiation passage and goes to unloading apron.
2, the method for utilizing X ray to carry out crude wood quarantine irradiation as claimed in claim 1, it is characterized in that in step S4, wooden device slowed down in described year when arriving described irradiated site, and described accelerator goes out bundle simultaneously, carries wooden device then and advances in irradiated site with even velocity; And described year wooden device quickens when leaving described irradiated site and simultaneously described accelerator stop bundle.
3, the method for utilizing X ray to carry out crude wood quarantine irradiation as claimed in claim 1 is characterized in that, described speed can be handled required minimal absorption dosage according to crude wood quarantine irradiation and adjust.
4, the method for utilizing X ray to carry out crude wood quarantine irradiation as claimed in claim 1 is characterized in that, is that one group form is arranged in around the middle part of irradiation passage symmetrically with described accelerator with 4.
5, the method for utilizing X ray to carry out crude wood quarantine irradiation as claimed in claim 1 is characterized in that, the energy of described accelerator is selected as between 10-16MeV.
As the described method of utilizing X ray to carry out crude wood quarantine irradiation of one of above-mentioned claim, it is characterized in that 6, described accelerator is an electron linear accelerator, practicing shooting by the electron beam that this electron linear accelerator produced produces X ray.
7, a kind of device that utilizes X ray to carry out crude wood quarantine irradiation, comprise irradiation passage (1), be used for along described irradiation passage (1) carry log carry wooden device (2), be distributed in the middle part of described irradiation passage (1) the accelerator that is used to produce X ray (3), be used for the shielding construction (4) of the X ray that shielding produced by described accelerator (3) and be used to drag described year wooden device (2) actuator (5).
8, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 7 is characterized in that, described accelerator is that one group form is distributed in around the middle part of described irradiation passage (1) symmetrically with 4.
9, as claim 7 or the 8 described devices that utilize X ray to carry out crude wood quarantine irradiation, it is characterized in that described accelerator is an electron linear accelerator, produce X ray by the electron beam target practice (16) that this electron linear accelerator produced.
10, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 7 is characterized in that:
Described shielding construction (4) comprises barrier shield (6), radiation source guard chamber (7) and canyon door (8);
Wherein said radiation source guard chamber (7) is positioned at the middle part of described irradiation passage (1), and wherein said accelerator is positioned at described radiation source guard chamber (7);
Described canyon door (8) provides the maintainer to pass in and out the passage of described radiation source guard chamber (7);
Described barrier shield (6) is positioned at the both sides and the top of described irradiation passage (1), and the thickness of wherein said barrier shield is along with the increase of the distance of described accelerator and successively decrease.
11, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 10 is characterized in that, the gateway of described irradiation passage (1) and described canyon door (8) are provided with safety interlock.
12, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 7 is characterized in that, described irradiation passage (1) is a S type passage, and itself constitutes a simple labyrinth, is used to reduce the influence of ray to entrance and exit of the passage.
13, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 10, it is characterized in that, described irradiation passage (1), described barrier shield (6), described radiation source guard chamber (7) and described canyon door (8) constitute a semi-enclosed zone, in this zone with interior be the radiation protection district.
14, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 10, it is characterized in that, close gateway one side at the bend of described irradiation passage (1), on described barrier shield (6), set up concrete buttress (9), be used to reduce the scattering of ray on described barrier shield (4) the influence outside the irradiation passage (1).
15, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 7 is characterized in that:
Described year wooden device (2) be the dual-purpose transport trolley of rail of self-powered device, can be outside described irradiation passage (1) by next the moving that pull of described actuator (5), and after entering described irradiation passage (1), enter slide rail immediately, under the promotion of self-powered device, on slide rail, move.
16, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 15 is characterized in that:
Described year wooden device (2) the bottom surface do not establish base plate, do not establish the compartment wall all around, to reduce stopping to X ray;
Described year wooden device (2) comprise set of wheels (10), column (11), chassis (12);
Wherein said column (11) is positioned at the both sides along its length of carrying wooden device (2), and each 4 of every sides are used to prevent that log from tumbling;
Described chassis (12) is recessed in the middle of being designed on its length direction, to avoid or to reduce the possibility that loader mechanism contacts with described chassis when loading log.
17, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 16, it is characterized in that: wooden device comprised variable-frequency motor (13) and motor reducer (14) in addition in described year, be used to guarantee that described year wooden device can move on slide rail with variable speed, the absorbed dose that receives when the irradiation with the log that guarantees to carry in the wooden device satisfies the requirement that crude wood quarantine irradiation is handled required minimal absorption dosage.
18, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 17 is characterized in that: described speed can be handled required minimal absorption dosage according to crude wood quarantine irradiation and adjust.
19, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 7, it is characterized in that: the front end at described accelerator (3) also is provided with scan box (15), outlet in described scan box (15) is attached with deflection magnet (17), so that the electron beam of drawing from scan box is vertically practiced shooting.
20, the device that utilizes X ray to carry out crude wood quarantine irradiation as claimed in claim 7 is characterized in that, the energy of described accelerator is selected as between 10-16MeV.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710177700A CN101441184B (en) | 2007-11-20 | 2007-11-20 | Method and device for performing crude wood quarantine irradiation by X ray |
| CN201110432591.6A CN102511458B (en) | 2007-11-20 | 2007-11-20 | Method and device for log inspection irradiation with X-ray |
| RU2008145233/28A RU2400978C2 (en) | 2007-11-20 | 2008-11-18 | Method and device for quarantine radiation of logs with x-ray beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710177700A CN101441184B (en) | 2007-11-20 | 2007-11-20 | Method and device for performing crude wood quarantine irradiation by X ray |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110432563.4A Division CN102511457B (en) | 2007-11-20 | 2007-11-20 | Method and device which utilize X-rays to carry out log quarantine irradiation |
| CN201110432591.6A Division CN102511458B (en) | 2007-11-20 | 2007-11-20 | Method and device for log inspection irradiation with X-ray |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101441184A true CN101441184A (en) | 2009-05-27 |
| CN101441184B CN101441184B (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710177700A Active CN101441184B (en) | 2007-11-20 | 2007-11-20 | Method and device for performing crude wood quarantine irradiation by X ray |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101441184B (en) |
| RU (1) | RU2400978C2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102125024A (en) * | 2010-07-16 | 2011-07-20 | 中国检验检疫科学研究院 | Irradiation insect killing method for Coleoptera forest insect pests |
| CN104749020A (en) * | 2013-12-30 | 2015-07-01 | 同方威视技术股份有限公司 | Port fruits quarantine and irradiation treatment method by accelerator and device thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6233478B1 (en) * | 1998-09-28 | 2001-05-15 | Advanced Research & Technology Institute | Apparatus and method for constructing computed tomography image slices of an object undergoing cyclic motion |
| US7072440B2 (en) * | 2001-10-19 | 2006-07-04 | Control Screening, Llc | Tomographic scanning X-ray inspection system using transmitted and Compton scattered radiation |
| CN1196499C (en) * | 2002-06-21 | 2005-04-13 | 清华同方威视技术股份有限公司 | Log multiple-faced radiation quarantine inspection processing apparatus |
| CN1788793A (en) * | 2005-12-16 | 2006-06-21 | 浙江大学 | Radioactive source radiation sterilization method |
| CN101284388B (en) * | 2007-04-12 | 2010-05-26 | 清华大学 | Method and apparatus using X-ray to perform log quarantine irradiation |
-
2007
- 2007-11-20 CN CN200710177700A patent/CN101441184B/en active Active
-
2008
- 2008-11-18 RU RU2008145233/28A patent/RU2400978C2/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102125024A (en) * | 2010-07-16 | 2011-07-20 | 中国检验检疫科学研究院 | Irradiation insect killing method for Coleoptera forest insect pests |
| CN104749020A (en) * | 2013-12-30 | 2015-07-01 | 同方威视技术股份有限公司 | Port fruits quarantine and irradiation treatment method by accelerator and device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2008145233A (en) | 2010-05-27 |
| CN101441184B (en) | 2012-09-05 |
| RU2400978C2 (en) | 2010-10-10 |
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