CN1779445A - Shutter structure of open and closed radioactive imaging checking system on train - Google Patents
Shutter structure of open and closed radioactive imaging checking system on train Download PDFInfo
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- CN1779445A CN1779445A CN 200410009884 CN200410009884A CN1779445A CN 1779445 A CN1779445 A CN 1779445A CN 200410009884 CN200410009884 CN 200410009884 CN 200410009884 A CN200410009884 A CN 200410009884A CN 1779445 A CN1779445 A CN 1779445A
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- baffle plate
- rod
- ray
- axle sleeve
- shutter structure
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Abstract
A shutter structure of X ray in open/close radiation imaging train checking system consists of frame, solenoid valve and baffle prepared by high density of lead alloy for blocking X ray. It is featured as connecting top and bottom side ends to shaft sleeve, shrinking each shaft sleeve easy push fit on guide shaft, connecting right side middle part of baffle to valve rod of solenoid valve and connecting top and bottom parts of connection between baffle and valve rod to spring push rod.
Description
Technical field
The present invention relates to radiant image detection technique field, especially for the shutter structure that opens and closes X ray in the radiant image train check system.
Background technology
In the prior art, begin to have the drawing type container examination system to come out, as the van container detection system of German Heyman company and British Aerospace PLC's production from early 1990s.They are in a building can shield the sense channel of ray, fixed, as to produce sigmatron radiation source is housed and can receives the detector array that passes the container X ray, the vehicle that container will be housed by the actuator of special use dragged sense channel, when container passes through in X-ray beam, the X ray that sees through container is through in the detector, according to its Strength Changes, the Density Distribution of the object of adorning in the reflection case, and transmitted intensity is transformed into gradation of image, can obtain the fluoroscopy images of the object of adorning in the case.When the radiant image technology is applied to the detection of train, because the compartment that has in the train is not allow X-ray scanning, headstock or the rest room that stops if any personnel, medical equipment is housed or the compartment etc. of arms escort personnel is arranged, this just need be in these compartments by the time cut off radiographic source.And accelerator needs the regular hour from beginning to restraint the stable output of dosage, so can not control having or not of X ray by the switch accelerator in the short time that train passes through.Can only lean on retaining to realize blocking to X ray at the shutter in X ray the place ahead.The shutter of using in the existing radiological survey X system mainly is that radioactive source is sealed, and can't realize because on-off effect speed is lower the scan control of high speed by railway car.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the purpose of this invention is to provide a kind of shutter structure that opens and closes X ray in the radiant image train check system.It can cut off beam quickly and accurately under the situation that accelerator does not stop to restraint, and guarantee train position when shutter close roentgen dose X safety, do not exceed standard.
In order to reach above-mentioned goal of the invention, technical scheme of the present invention realizes as follows:
A kind of shutter structure that opens and closes X ray in the radiant image train check system, it comprises framework, solenoid valve and adopts the high density lead alloy or the baffle plate of the blocked X ray that tungalloy is made.Its design feature is, the upper and lower sides two ends of described baffle plate are connected with axle sleeve, and each axle sleeve is slidingly matched and is sleeved on the axis of guide that is fixed in described framework.The valve rod of the described solenoid valve that the right-hand end of baffle plate middle part is interior with being fixed on framework is connected, the position up and down of baffle plate and valve rod junction be fixed on framework in reset abutment on spring push-rod be connected.
In above-mentioned shutter structure, the rear end of described each spring push-rod reaches over against the left-hand end of valve rod junction baffle plate and all is equipped with impact damper.
In above-mentioned shutter structure, rear end and the minimum mounting distance of the front end of impact damper push rod during greater than the baffle plate opening needed displacement of described spring push-rod when the baffle plate closure state.
In above-mentioned shutter structure, described axle sleeve adopts linear bearing, and the supporting seat of axle sleeve is axially arranged with the slit that can adjust its amount of tolerance that is slidingly matched.
The present invention is owing to adopted above-mentioned structure, valve rod by solenoid valve is controlled opening of baffle plate, quick-make baffle plate under the spring tension effect at spring push-rod after the solenoid valve dead electricity, the opening speed that has improved baffle plate so greatly promptly in use can allow accelerator begin bundle when the position is examined in the train no show, output through certain hour postaccelerator dosage promptly reaches maximum and stable status, opens at baffle plate like this, can obtain scan image clearly when ray penetrates the compartment.When needs were closed X ray, as long as the solenoid valve outage, baffle plate can cover X ray fast.Structure of the present invention is controlled by detection signal, need not human intervention, and reaction fast, accurately can be satisfied the train that high speed passes through each is saved the demand of compartment scan control.
The present invention is described further below in conjunction with accompanying drawing and concrete embodiment.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Embodiment
Referring to accompanying drawing, the present invention includes framework 5, solenoid valve 2 and adopt the high density lead alloy or the baffle plate 1 of the blocked X ray that tungalloy is made.The upper and lower sides two ends of baffle plate 1 are connected with the axle sleeve 8 that adopts linear bearing, and each axle sleeve 8 is slidingly matched and is sleeved on the axis of guide 7 that is fixed in described framework 5, and the supporting seat of axle sleeve 8 is axially arranged with the slit that can adjust its amount of tolerance that is slidingly matched.The valve rod 9 of the described solenoid valve 2 that the right-hand end of baffle plate 1 middle part is interior with being fixed on framework 5 is connected, the position up and down of baffle plate 1 and valve rod 9 junctions be fixed on framework 5 in reset abutment 3 on spring push-rod 6 be connected.The rear end of each spring push-rod 6 reaches over against the left-hand end of valve rod 9 junction baffle plates 1 and all is equipped with impact damper 4.Rear end and the minimum mounting distance of the front end of impact damper 4 push rods during greater than the baffle plate 1 opening needed displacement of spring push-rod 6 when baffle plate 1 closure state.
In use, the present invention opens or closed operation owing to need finishing in the short time at the utmost point that two joint gaps, compartment are passed through, the distance in general two joint gaps, compartment is 0.7 meter, calculate by max. speed 30km/h, the time of baffle plate 1 switch is 0.08 second, just will finish from being closed at 0.08 second time Internal baffle 1 and open or from being opened to closed process.The width of accelerator main beam is 10mm, and baffle plate 1 will be opened 35mm at least, considers that baffle plate 1 opens the back if too closely may cause scattering to X ray from main beam, so the stroke of baffle plate 1 is designed to 60mm.
When the present invention designed, selecting the input power supply for use was the solenoid valve 2 of 2 phase 380V, minimum power output 70kg (686N); The thickness of baffle plate 1 is 50mm, the weight m=40kg of all motions; The intensity P ' of two groups of spring push-rods 6=3.5N/mm, two groups of spring push-rod 6 difference precompressed 15mm when baffle plate 1 is in the close position.
The opening procedure of baffle plate 1 is:
When 1. baffle plate 1 was positioned at make-position, it was subjected to the acting in conjunction of bounce behind the precompressed 15mm respectively of thrust 686N that solenoid valve 2 comes by valve rod 9 transmission and two groups of spring push-rods 6, and bounce is 2*3.5*15=105N.The initial acceleration that open this moment:
a’＝F’/m＝(686-105)/40＝14.5(m/s2)
2. baffle plate 1 35mm that slides to the right, bounce is 2*3.5* (15+35)=350N when promptly being shown in an open position.Open acceleration constantly this moment:
a”＝F”/m＝(686-350)/40＝8.4(m/s
2)
3. baffle plate 1 is from being closed into the average acceleration of opening:
a＝(a’+a”)/2＝(14.5+8.4)/2＝11.5(m/s
2)
The needed time of 35mm is by formula t1 so baffle plate 1 slides to the right
2=2*0.035/a calculates t1=0.078 (s), and t1＜0.08 (s) satisfies two joint compartment clearance distances are opened the time to baffle plate 1 requirement.
When 4. baffle plate 1 slided into the 40mm place to the right, impact damper 4 began to work, and stopped when baffle plate 1 slides into 60mm to the right and kept.
The closing course of baffle plate 1 is:
1. baffle plate 1 is in the extreme position of opening, 1 compression elasticity effect of bearing two groups of spring push-rods 6 of solenoid valve 2 dead electricity backboards, and the bounce of this moment is:
F1＝2*3.5*(15+60)＝525(N)
At this moment, Bi He initial acceleration is:
a1＝F1/m＝525/40＝13.1(m/s
2)
2. baffle plate 1 slides into the anti-spring force at 35mm place left and is:
F2＝2*3.5*(15+35)＝350(N)
The acceleration of closing moment this moment is:
a2＝F2/m＝350/40＝8.8(m/s
2)
3. baffle plate 1 from being opened to closed average acceleration is:
a3＝(13.1+8.8)/2＝10.95(m/s
2)
25mm needs the time of time by formula so baffle plate 1 slides left
T2
2=2*0.025/a3 calculates t2=0.068 (s), and t2＜0.08 (s) satisfies the requirement of two joint compartment clearance distances to baffle plate 1 closure time.
Claims (4)
1, a kind of shutter structure that opens and closes X ray in the radiant image train check system, it comprises framework (5), the baffle plate (1) of the blocked X ray that solenoid valve (2) and employing high density lead alloy or tungalloy are made, it is characterized in that, the upper and lower sides two ends of described baffle plate (1) are connected with axle sleeve (8), each axle sleeve (8) is slidingly matched and is sleeved on the axis of guide (7) that is fixed in described framework (5), the valve rod (9) of the described solenoid valve (2) that the right-hand end of baffle plate (1) middle part is interior with being fixed on framework (5) is connected, the position up and down of baffle plate (1) and valve rod (9) junction be fixed on framework (5) in reset abutment (3) on spring push-rod (6) be connected.
2, shutter structure according to claim 1 is characterized in that, the rear end of described each spring push-rod (6) reaches over against the left-hand end of valve rod (9) junction baffle plate (1) and all is equipped with impact damper (4).
3, shutter structure according to claim 2, it is characterized in that rear end and the minimum mounting distance of the front end of impact damper (4) push rod during greater than baffle plate (1) the opening needed displacement of described spring push-rod (6) when baffle plate (1) closure state.
According to claim 1,2 or 3 described shutter structures, it is characterized in that 4, described axle sleeve (8) adopts linear bearing, the supporting seat of axle sleeve (8) is axially arranged with the slit that can adjust its amount of tolerance that is slidingly matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410009884 CN1779445A (en) | 2004-11-26 | 2004-11-26 | Shutter structure of open and closed radioactive imaging checking system on train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410009884 CN1779445A (en) | 2004-11-26 | 2004-11-26 | Shutter structure of open and closed radioactive imaging checking system on train |
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| Publication Number | Publication Date |
|---|---|
| CN1779445A true CN1779445A (en) | 2006-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410009884 Pending CN1779445A (en) | 2004-11-26 | 2004-11-26 | Shutter structure of open and closed radioactive imaging checking system on train |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222534A (en) * | 2011-03-10 | 2011-10-19 | 中国原子能科学研究院 | Beam shutter for single event effect ground accelerator simulation test |
| CN103661487A (en) * | 2012-09-26 | 2014-03-26 | 同方威视技术股份有限公司 | Train security check system and method with improved radiation protection function |
| CN103995299A (en) * | 2014-06-11 | 2014-08-20 | 苏州奥特福环境科技有限公司 | X-ray beam control device in green channel detection system |
| CN104198507A (en) * | 2014-09-16 | 2014-12-10 | 北京一体通探测技术有限公司 | Shutter device for shielding rays and ray scanning imaging system |
| CN110934610A (en) * | 2019-12-06 | 2020-03-31 | 飞瑞医疗器械(嘉兴)有限公司 | Beam limiter and X-ray generating device |
-
2004
- 2004-11-26 CN CN 200410009884 patent/CN1779445A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222534A (en) * | 2011-03-10 | 2011-10-19 | 中国原子能科学研究院 | Beam shutter for single event effect ground accelerator simulation test |
| CN102222534B (en) * | 2011-03-10 | 2013-06-12 | 中国原子能科学研究院 | Beam shutter for single event effect ground accelerator simulation test |
| CN103661487A (en) * | 2012-09-26 | 2014-03-26 | 同方威视技术股份有限公司 | Train security check system and method with improved radiation protection function |
| CN103995299A (en) * | 2014-06-11 | 2014-08-20 | 苏州奥特福环境科技有限公司 | X-ray beam control device in green channel detection system |
| CN103995299B (en) * | 2014-06-11 | 2016-09-07 | 苏州曼德克光电有限公司 | The control device of X-ray beam in a kind of green channel detecting system |
| CN104198507A (en) * | 2014-09-16 | 2014-12-10 | 北京一体通探测技术有限公司 | Shutter device for shielding rays and ray scanning imaging system |
| CN110934610A (en) * | 2019-12-06 | 2020-03-31 | 飞瑞医疗器械(嘉兴)有限公司 | Beam limiter and X-ray generating device |
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Open date: 20060531 |