CN2035888U - Portable x ray flaw detector - Google Patents
Portable x ray flaw detector Download PDFInfo
- Publication number
- CN2035888U CN2035888U CN 88217599 CN88217599U CN2035888U CN 2035888 U CN2035888 U CN 2035888U CN 88217599 CN88217599 CN 88217599 CN 88217599 U CN88217599 U CN 88217599U CN 2035888 U CN2035888 U CN 2035888U
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- China
- Prior art keywords
- ray
- portable
- image intensifier
- light
- model
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000003745 diagnosis Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- 239000011734 sodium Substances 0.000 claims description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 230000003028 elevating effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract description 2
- 208000019155 Radiation injury Diseases 0.000 abstract 1
- 238000012769 bulk production Methods 0.000 abstract 1
- 230000003321 amplification Effects 0.000 description 6
- 238000003199 nucleic acid amplification method Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 238000002594 fluoroscopy Methods 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 230000005251 gamma ray Effects 0.000 description 2
- 206010027146 Melanoderma Diseases 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000003557 bones of lower extremity Anatomy 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
Images
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
The utility model provides a portable x-ray flaw detector used for medical diagnosis and industry flaw detection, composed of an outer shell, a supported arm, a radiation source, an image intensifier and power supply. The utility model is characterized in that the image intensifier is the light image intensifier adopting the x-ray to convert directly into photoelectron once. The portable x-ray flaw detector has two forms of table model and hands hoist mode. The utility model has the advantages of simple structure, small size, light weight, flexible operation, convenient portability, long service life and clear image and can not generate radiation injury for staff and is suitable for bulk production.
Description
The utility model is a kind of Portable X-ray defectoscope that is used for industrial flaw detection and medical diagnosis.
In the prior art, United States Patent (USP) 4142101 has been described a kind of small-sized X-ray machine (existing procucts sale, merchant's label are LiXi), it adopts and closely develops the template image intensifier, and structure is made up of visible light screen layer, scintillator material layer, input optical fibre panel, S-20 photocathode, microchannel plate, P-20 video screen and output optical fibre panel.Because photocathode receives only visible light, the x ray of incident could inspire photoelectron after converting visible light on the S-20 photocathode, so can not save visible light screen layer, scintillator material layer and input, output optical fibre panel; Chinese Academy of Sciences's Shanghai ray machine utility model patent 80207274-6 be that a kind of portable sleeve is examined x x ray fluoroscopy x instrument.It is the problem that exists at United States Patent (USP) 4142101, and x radiographic source, converter and image intensifier are improved, and provides that a stage body is long-pending little, easy to use, the life-span is long, the x x ray fluoroscopy x instrument of clear picture.It has been avoided the trouble because of using radioisotope material to bring, and has reduced cost because adopted the x ray tube to make radiographic source.But portable sleeve is examined x x ray fluoroscopy x instrument and is also had following shortcoming:
(1) use light cone shape converter, electrostatic focusing type image intensifier, increased scintillator material layer, light cone coupling mechanism and visible light screen layer, input-output optical fiber panel in the structure, complex structure, and bring the transition loss of x ray;
(2) owing to adopt light cone coupling mechanism, small-bore microchannel plate, then must use optical amplification system, make cost increase and increase image fault;
(3) electrostatic focusing type image intensifier, though can improve the gain of image intensifier and guarantee picture quality, but increased the electron focusing utmost point, the manufacturing process complexity, and must use huge and expensive vacuum transfer apparatus could make photocathode, yield rate is lower, and the output inverted image, makes troubles to use;
(4) x ray tube pipe only presses that 30-40KV, pipe flow only 60-100 μ A, and source strength is lower, can only be confined to the perspective of human limb bone.
The purpose of this utility model is exactly to examine the above-mentioned shortcoming of x x ray fluoroscopy x instrument and the existence of United States Patent (USP) x x ray fluoroscopy x instrument in order to overcome portable sleeve, improve image intensifier, become secondary and be converted to once conversion, save converter, optical amplification system, raising x gamma ray source strength, provide one not only can be used for medical diagnosis, but also can be used for industrial flaw detection simple in structure, volume is little, in light weight, portable x ray flaw detector that purposes is wide, easy to use and carry.
The portable x ray flaw detector of the utility model is made up of shell, sway brace, x radiographic source, image intensifier and power supply.It is characterized in that image intensifier is to adopt by the x ray to be directly changed into the photoelectronic once x light image booster of conversion.Its structure is that photocathode, microchannel plate and video screen three are encapsulated in the vacuum glass shell (vacuum tightness is more than 1 * 10-7 torr), makes input, output window for flat glass plate before and after the glass shell.Photocathode, microchannel plate, video screen three caliber size equate, the three is arranged parallel to each other, and the distance between photocathode and the microchannel plate is 0.3-0.4mm; Distance between microchannel plate and the video screen is 1.2-1.4mm, photocathode adopts receives the CsI(Na that activates) material, it receives x and is directly changed into photoelectron behind the ray, therefore, its front need not to add again one with the x ray convert to visible light converter (two patents in front no matter plate still light cone type all need convert the x ray to visible light).The photoelectron of its emission incides the microchannel plate porch under electric field action, and in microchannel plate, make photoelectron number obtain nearly thousand times increase under the electric field action of 0.8-1.0KV voltage, photoelectron after the multiplication incides on the video screen under the 4.5-7.5KV voltage electric field action between microchannel plate output terminal and the video screen again, because fluoroscopic bore is identical with the bore of microchannel plate, under electric field quickens, photoelectron does not incide on the video screen with almost can having loss, inspire enough strong visible light, can observe distinct image by output window, so the video screen back also need not to add optical amplification system again.
The utility model adopts solid-core microchannel plate, both has been convenient to cleaning treatment, can avoid foreign material to stop up some passage again and form dead eye, so that cause producing blackspot on video screen.
Final assembly of the present utility model becomes desk-top or hand is lifted two kinds of forms of formula.There is the fixedly firm banking in x light ray source and x light image booster at the sway brace two ends, have fixed handle on the desk-top sway brace centre position.Defectoscope can be fixed on worktable or other estrade, the elevating mechanism that moves up and down is housed on the fixed handle, fuselage is moved up and down.Firm banking one end of sway brace is used for fixing the x radiographic source, and the other end is used for fixing x light image booster, so sway brace can guarantee that x radiographic source and x light image booster are on the same axis, and can guarantee distance between the two.
For desk-top defectoscope, be more than the 400mm by x ray light source output window to the distance between the x light image booster input window, the operating distance that hand is lifted the formula defectoscope is between the 150mm to 400mm.On the sway brace centre position of hand act formula defectoscope the lever of being convenient to operate is arranged.
The voltage of x ray tube of the present utility model is 45KVP-75KVP, and electric current is 60 μ A-350 μ A, and is adjustable continuously.Electric current, voltage can guarantee that above-mentioned desk-top or hand lifts the work flaw detection distance of formula thus, and therefore, the inspected area that this is novel not only can be detected the four limbs of human body, also can expand to whole body; Both can be used for detecting of the interior metallic foreign body of human body, also can be used for the flaw detection of semi-conductor industry, electronics industry and material industry.When the electric current of x ray tube is added to maximal value (350 μ A), under normal operation, still can not cause beta burn.
Advantage of the present utility model
(1) since adopted by sodium activate CsI(Na) the x light image booster made as photocathode of material, the x ray is directly incident on and inspires photoelectron on the photocathode, remove the conversion of x ray from, promptly become secondary and be converted to once conversion, saved converter;
(2) input output window of x light image booster, photocathode, microchannel plate and fluoroscopic bore are all identical, can save light cone coupling mechanism (500 yuan every of the light cones of homemade φ 50-φ 25) and optical amplification system, both simplified the structure, avoided image fault again;
(3) desk-top, two kinds of structures of hand act formula of this novel employing, the expanded range of flaw detection, the x gamma ray source strength improves, and usable range expands to whole body from the appendicular skeleton perspective of human body, also can be used for detecting and industrial flaw detection of the interior metallic foreign body of human body;
(4) this is novel owing to image intensifier and optical amplification system without the focus type structure, and output image is erect image, and is easy to use;
(5) this is novel owing to saved x radiation converter, light cone coupling mechanism, optical amplification system, input-output optical fiber panel, makes designs simplification, cost reduce, are convenient to operation, weight saving, are more convenient for carrying.
Description of drawings
Fig. 1 is portable x ray flaw detector mesa structure synoptic diagram.
1-x ray tube 2-lead shield layer
The plumbous output of 3-x radiographic source shell 4-light hurdle
5-x light image booster 6-x light image booster shell
The desk-top sway brace of 7-light shield 8-
9-fixed handle 10-is x radiographic source base fixedly
11-is x light image booster base fixedly
Fig. 2 is the A-A cut-open view of fixed handle 9 among Fig. 1
12-elevating mechanism 13-clamp-screw
Fig. 3 lifts formula x ray flaw detector structural representation for hand
The 14-hand is lifted formula sway brace 15-lever
Fig. 4 is an x light image booster structural representation
16-x ray input window 17-photocathode
18-microchannel plate 19-glass shell
20-video screen 21-output window
22-photocathode electrode 23-microchannel plate input electrode
24-microchannel plate output electrode 25-video screen electrode
Embodiment of the present utility model
Embodiment 1 is a mesa structure x ray flaw detector, as shown in Figure 1;
The structure of x light image booster is made up of glass input window 14, photocathode 15, microchannel plate 16, video screen 18, output window 19 and glass shell 17 as shown in Figure 4, and vacuum tightness is 6 * 10 in the shell
-8Torr, photoelectric cathode materials are the CsI(Na that sodium activates), the real central layer of microchannel plate, video screen is the P-20 fluorescent material, the effective aperture of input, output window, photocathode, video screen and microchannel plate is φ 50mm, x light image booster photocathode by electrode 20 making alives-1.5 to-3.5KV; To-1.0KV, the microchannel plate output terminal is by electrode 22 ground connection by electrode 21 making alives-0.8 for the microchannel plate input end, video screen by electrode 23 making alives 4.5 to 7.5KV.
Fig. 1, Fig. 2 are the complete machine structure synoptic diagram, among the figure the 1,2,3, the 4th, form the x ray emission source (power supply is supplied with in addition) of one, x ray tube 1 is the glass pipe of diameter phi 25mm, long 70mm, focus 0.3mm * 0.3mm, cathode filament voltage 2.7 ± 0.6V, electric current 1.5A is adjustable, the tungsten anode, vacuum tightness is higher than 5 * 10
-6Torr; Lead shield layer 2 adopts the stereotype of thick 1.3mm to make; X radiographic source shell 3 is the galvanized iron sheet tube of thick 1mm, diameter phi 100mm, long 100mm, and inversion, multiplication of voltage element and the filament transformer of interior encapsulation x ray tube 1, lead shield layer 2 and confession x ray tube anode high pressure also filled condenser oil and made insulation and heat transmission; X light output light hurdle 4 is thick be the stereotype of 3mm, and the x ray of its delivery outlet through limiting outgoing only is full of the φ 50mm input window of x light image booster; 5,6,7 the reception of x rays, displays for the encapsulation one among the figure, the poly-alum material of light shield 7 usefulness also is horn-like, in order to the shield parasitic light, to guarantee can to observe the image of detecting in bright light environments.
The desk-top long 500mm of complete machine, wide 480mm, high 500mm, move up and down apart from 300mm, weight and be not more than 4Kg; The long 300mm of hand act formula, wide 120mm, high 150mm, weight are not more than 2.5Kg; It is right that the complete machine screen brightness is better than every milligram 4 line greater than 20 nits, resolution.
Claims (1)
1, a kind of Portable X-ray defectoscope that is used for medical diagnosis and industrial flaw detection.Form by shell, the sway brace that has lever, x-ray source, image intensifier and power supply.It is characterized in that: image intensifier is built-in with sodium that bore equates, is arranged in parallel by a glass shell and activates the actinogram booster that the input and output window on microchannel plate, video screen, the plane of the photocathode of CsI (Na) material, real central layer is formed, there is the fixedly firm banking of x-ray source and actinogram booster at the sway brace two ends, middle lever is the fixed handle that has elevating mechanism, by X ray light source output window to the distance between the actinogram booster input window greater than 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88217599 CN2035888U (en) | 1988-10-11 | 1988-10-11 | Portable x ray flaw detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88217599 CN2035888U (en) | 1988-10-11 | 1988-10-11 | Portable x ray flaw detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2035888U true CN2035888U (en) | 1989-04-12 |
Family
ID=4850132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88217599 Expired - Lifetime CN2035888U (en) | 1988-10-11 | 1988-10-11 | Portable x ray flaw detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2035888U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2574188A (en) * | 2018-04-11 | 2019-12-04 | E M & I Maritime Ltd | Inspection method and associated apparatus |
-
1988
- 1988-10-11 CN CN 88217599 patent/CN2035888U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2574188A (en) * | 2018-04-11 | 2019-12-04 | E M & I Maritime Ltd | Inspection method and associated apparatus |
| GB2574188B (en) * | 2018-04-11 | 2022-03-09 | E M & I Maritime Ltd | Inspection of hazardous area equipment |
| US12038394B2 (en) | 2018-04-11 | 2024-07-16 | E M & I (Maritime) Limited | Inspection method and associated apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |