CN110780339A - Cold and hot neutron detector for oil well logging and lithium glass fiber preparation method - Google Patents
Cold and hot neutron detector for oil well logging and lithium glass fiber preparation method Download PDFInfo
- Publication number
- CN110780339A CN110780339A CN201911037392.8A CN201911037392A CN110780339A CN 110780339 A CN110780339 A CN 110780339A CN 201911037392 A CN201911037392 A CN 201911037392A CN 110780339 A CN110780339 A CN 110780339A
- Authority
- CN
- China
- Prior art keywords
- lithium glass
- glass fiber
- detector
- lithium
- layer
- Prior art date
- 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.)
- Granted
Links
- 239000006123 lithium glass Substances 0.000 title claims abstract description 123
- 239000000835 fiber Substances 0.000 title claims abstract description 92
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000003129 oil well Substances 0.000 title abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000002657 fibrous material Substances 0.000 claims abstract description 10
- 238000005491 wire drawing Methods 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 239000003365 glass fiber Substances 0.000 abstract description 5
- 239000011162 core material Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000005304 optical glass Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910000629 Rh alloy Inorganic materials 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- SWQJXJOGLNCZEY-BJUDXGSMSA-N helium-3 atom Chemical compound [3He] SWQJXJOGLNCZEY-BJUDXGSMSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000000155 isotopic effect Effects 0.000 description 1
- -1 lithium-6 compound Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
- G01T3/06—Measuring neutron radiation with scintillation detectors
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/022—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres, undulated fibres, fibres presenting a rough surface
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Measurement Of Radiation (AREA)
- Luminescent Compositions (AREA)
Abstract
The invention provides a cold and hot neutron detector for oil well logging and a preparation method of lithium glass fiber, wherein the detector comprises a detector main body, a photomultiplier and a coupling layer arranged between the detector main body and the photomultiplier, and also comprises a lithium glass fiber layer and a total reflection layer arranged on the outer end surface of the lithium glass fiber layer, and the detector main body and the lithium glass fiber layer form an integral core glass layer through a casting forming process; in the scheme, the lithium glass fiber layer on the detector is formed by tightly arranging a plurality of layers of glass fibers, and the lithium glass fiber layer and the detector main body are manufactured into an integral core glass layer by adopting a casting forming process, so that the whole detector is easier to manufacture; in addition, the lithium glass fiber material is prepared by an improved lithium glass and fiber preparation method by adopting a platinum-substituted crucible wire drawing process, so that the detection efficiency of high-efficiency neutrons can be ensured, and compared with the traditional detector, the lithium glass consumption is less, so that the detection performance and the manufacturing economy of the detector are improved.
Description
Technical Field
The invention relates to the technical field of application research of nuclear radiation detectors, in particular to a cold and hot neutron detector for oil well logging and a preparation method of lithium glass fiber.
Background
The helium 3-tube cold and thermal neutron detector is considered to be the most mature detector with excellent performance in the field of cold and thermal neutron detection. However, the core material of the current detector is extremely short of helium 3 gas, so that the price of the detector made of the material is very high. Research teams both domestic and international are dedicated to developing alternatives to helium 3-tube neutron detectors. For example, a chinese utility model patent entitled "a new lithium glass scintillator cold and thermal neutron detector for oil logging" with publication number CN209182517U, on which a lithium glass skin layer is used as the shell layer of the detector, the difficulty of its manufacture is very large.
In addition, a chinese patent with patent No. 200610089209.5 and publication No. CN1903763 entitled "a glass scintillator for thermal neutron detector and a preparation method thereof" discloses a component of a lithium glass scintillator and a preparation method thereof, and another chinese patent with patent No. 201410203923.7 and publication No. CN104445965A entitled "a high performance glass fiber" also discloses a composition of a glass fiber and a preparation method thereof; although the two patents respectively disclose the components of the lithium glass fiber and the corresponding preparation method, the application of the preparation method to the preparation of the lithium glass fiber has certain defects, so that the detection performance of the thermal neutron detector manufactured by the preparation method is not ideal enough, and there is still room for improvement.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a cold and hot neutron detector for oil well logging and a preparation method of lithium glass fiber.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the detector comprises a detector body consisting of optical glass, a photomultiplier arranged at the bottom end of the detector body, and a coupling layer arranged between the detector body and the photomultiplier, and further comprises a lithium glass fiber layer arranged on the periphery of the detector body and a total reflection layer arranged on the outer end face of the lithium glass fiber layer, wherein the lithium glass fiber layer is formed by closely arranging multiple layers of lithium glass fibers, and the detector body and the lithium glass fiber layer form a whole core glass layer through a pouring forming process.
Further, the light refraction coefficient of the detector main body is higher than that of the lithium glass fiber layer.
Furthermore, the lithium glass fiber layer is formed by 40-100 layers of lithium glass fibers which are closely arranged.
Furthermore, the detector main body is made of glass with high heat resistance.
Meanwhile, the invention also provides a preparation method of the lithium glass fiber, which comprises the following steps:
1) and preparing a lithium glass batch:
calculating the use amount of each component according to the weight percentage of the lithium glass composition, and then correspondingly weighing each component and mixing to form a batch;
2) melting lithium glass:
A. placing the batch obtained in the step 1) into a crucible, placing the crucible into a molybdenum rod furnace at 1400 ℃ and 1450 ℃, and carrying out high-temperature melting in a strong reducing atmosphere;
B. b, drying the lithium glass fiber material obtained in the step A at a high temperature, and taking out for later use;
C. putting all the dried lithium glass fiber materials into a platinum crucible furnace, putting the platinum crucible furnace into a 1450-1500 ℃ molybdenum rod furnace in a strong reducing atmosphere for melting, and then cooling and discharging;
3) and forming the lithium glass fiber:
and reducing the temperature of the molten lithium glass fiber to 1200-1300 ℃, and starting drawing at a high temperature. Regulating the rotating speed of the wire drawing machine to be 900-1400 rpm, and drawing into continuous fibers of 20-50 microns;
4) annealing of the lithium glass fiber:
and (3) after the lithium glass fiber is solidified, quickly putting the lithium glass fiber into a muffle furnace at a high temperature for heat preservation, and then closing the muffle furnace for cooling to obtain the finally used lithium glass fiber.
Furthermore, the lithium glass fiber is prepared by adopting the improved lithium glass and fiber preparation method and adopting a platinum-substituted crucible wire drawing process.
Compared with the traditional technical scheme, the technical scheme has the beneficial effects that: the lithium glass fiber layer on the detector is formed by closely arranging multiple layers of glass fibers, and the lithium glass fiber layer and the detector body are manufactured into a whole core glass layer by adopting a pouring forming process, so that the whole detector is easier to manufacture. The lithium glass fiber is prepared by adopting the improved lithium glass of the lithium glass fiber material and the fiber preparation method and adopting the platinum-substituted crucible wire drawing process, can ensure high-efficiency neutron detection efficiency, and has less lithium glass consumption compared with the traditional detector, thereby improving the detection performance and the manufacturing economy of the detector.
Drawings
Fig. 1 is a schematic diagram of the structural principle of the detector in this embodiment.
Fig. 2 is a schematic perspective view of the detector in this embodiment.
Fig. 3 is a schematic top view of the detector in this embodiment.
Fig. 4 is an enlarged view of a portion of the structure of fig. 3.
In the figure:
1-total reflection layer, 2-photomultiplier, 3-coupling layer, 4-lithium glass fiber layer, 5-detector body.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The invention aims at the problem that the conventional detector adopts a lithium glass skin layer as a shell layer of the detector and has great manufacturing and processing difficulty, and further provides the lithium glass fiber cold and hot neutron detector for the oil well logging.
Firstly, the invention provides a preparation method of lithium glass fiber, which comprises the following steps:
1) and preparing a lithium glass batch:
calculating the use amount of each component according to the weight percentage of the lithium glass composition, and then correspondingly weighing each component and mixing to form a batch;
2) melting lithium glass:
A. placing the batch obtained in the step 1) into a crucible, placing the crucible into a molybdenum rod furnace at 1400 ℃ and 1450 ℃, and carrying out high-temperature melting in a strong reducing atmosphere;
B. b, drying the lithium glass fiber material obtained in the step A at a high temperature, and taking out for later use;
C. putting all the dried lithium glass fiber materials into a platinum crucible furnace, putting the platinum crucible furnace into a 1450-1500 ℃ molybdenum rod furnace in a strong reducing atmosphere for melting, and then cooling and discharging;
3) and forming the lithium glass fiber:
and reducing the temperature of the molten lithium glass fiber to 1200-1300 ℃, and starting drawing at a high temperature. Regulating the rotating speed of the wire drawing machine to be 900-1400 rpm, and drawing into continuous fibers of 20-50 microns;
4) annealing of the lithium glass:
and (3) quickly putting the solidified lithium glass fiber into a high-temperature muffle furnace for heat preservation, and then closing the muffle furnace for cooling to obtain the finally used lithium glass fiber.
The lithium glass fiber is made of lithium glass fiber materials by adopting a platinum-substituted crucible wire drawing process at high temperature. It should be noted that, in this patent, the lithium glass fiber needs to be drawn at a high temperature in the melting processThe operation is due to the most important activator cerium element (Ce) in lithium glass, only in Ce
3+Can emit light in valence state, Ce
4+Does not emit light, so that Ce can be effectively prevented by performing wire drawing operation at high temperature
3+Exposed to strong oxidizing atmosphere and oxidized to Ce
4+Ions. So as to ultimately enable the lithium glass fiber to maintain efficient thermal neutron detection performance.
Referring to fig. 1 to 4, the cold and hot neutron detector for oil well logging in this embodiment includes a detector main body 5 made of optical glass, a photomultiplier tube 2 disposed at the bottom end of the detector main body 5, and a coupling layer 3 disposed between the detector main body 5 and the photomultiplier tube 2, the detector further includes a lithium glass fiber layer 4 disposed at the periphery of the detector main body 5, and a total reflection layer 1 disposed on the outer end face of the lithium glass fiber layer 4, wherein the lithium glass fiber layer 4 is formed by closely arranging multiple layers of lithium glass fibers, and the detector main body 5 and the lithium glass fiber layer 4 form an integral core glass layer through a casting process. In addition, the lithium glass fiber layer 4 in the embodiment is formed by adopting the existing platinum-substituted crucible drawing process, specifically, the platinum-substituted crucible drawing process is that the lithium glass in the platinum-substituted crucible body is in the temperature range required by drawing forming, molten glass flows out from a discharge spout at the bottom of a platinum-rhodium alloy boat-shaped bushing plate at the lower part of the crucible body, and the filament root is forcibly cooled by a cooler and drawn at high speed by a drawing machine to form the glass fiber. In addition, the lithium glass fiber 4 in the present embodiment includes SiO as a material component
2，Li
2O，Al
2O
3，Ce
2O
3，Sb
2O
3And carbon powder
，Wherein, SiO
260-80% by mass of an isotopic lithium-6 compound Li
210 to 20 percent of O and Al
2O
35 to 8 percent of Ce
2O
35-8% by mass of Sb
2O
31-2% of carbon powder and 1-2% of carbon powder.
Specifically, the lithium glass fiber layer 4 in this embodiment is formed by closely arranging a plurality of lithium glass fiber layers 4, wherein the lithium glass fiber layer is a sensitive material for detecting cold and thermal neutrons, and has good thermal stability. The diameter of the lithium glass fibers in the lithium glass fiber layer 4 in this embodiment depends on the manufacturing process and is typically 50 microns. The size of the lithium glass fiber with fine size is mainly used for reducing the sensitivity of the detector to background gamma rays in the environment to the maximum extent, so that the neutron-gamma discrimination efficiency of the whole system is improved. In addition, the thickness of the lithium glass fiber layer 4 in the embodiment is determined according to actual detection requirements, generally, the thickness is 2-5 mm, the thermal neutron detection efficiency can reach more than 80%, and 40-100 lithium glass fiber layers 4 are correspondingly required to be formed in a close arrangement manner, so that cold neutrons and thermal neutrons can be effectively absorbed.
In the embodiment, the detector main body 5 made of the light guide glass plays a role in guiding light and reinforcing the lithium glass fiber layer 4 in the detector, and specifically, the detector main body 5 and the lithium glass fiber layer 4 form an integral core glass layer through a casting forming process, no gap exists between the core glass layer and the lithium glass fiber layer, and light can be directly transmitted; meanwhile, the refractive index of the high-refractive-index light guide glass is greater than that of the lithium glass fiber, so that a very good light conduction effect can be achieved from the lithium glass fiber layer 4 to the light guide glass; the physical properties of the light guide glass meet the following conditions:
1) the melting point of the light guide glass is about 500-600 ℃, which is far lower than the melting point of 1000-1100 ℃ of the novel lithium glass;
(2) the refractive index of the light guide glass is higher than that of the lithium glass fiber, so that a very good light conduction effect is achieved;
(3) due to the particularities of the manufacturing process, the coefficient of expansion of glass is as small as possible. The composition is added with silicon dioxide SiO
2The content of boron oxide BO or divalent metal oxide, and the content of alkali metal oxide is properly reduced, so that the expansion coefficient of the glass can be effectively reduced;
(4) the heat resistance of the glass needs to be strong enough not to damage its internal structure during the softening process. The light guide must always maintain a good profile under the harsh conditions of use in oil logging.
The total reflection layer 1 in this embodiment can mainly reflect scintillation light back to the lithium glass scintillator and the light guide glass, and has a light-shielding function; and simultaneously, the scintillation light collection efficiency can be improved.
The coupling layer 3 in this embodiment (which is formed by using a high temperature resistant optical coupling agent) is mainly used to match the refractive index of the optical window and the core glass material of the photomultiplier tube 2, reduce the loss of light during interface conduction, and increase the collection efficiency of scintillation light.
The photomultiplier tube 2 in this embodiment is mainly used for recording the light signal generated by the lithium glass scintillator.
In actual production, a lithium glass scintillator is first made into ultrafine lithium glass fibers. Then, the lithium glass fibers are arranged into a thinner shell structure, and the main purpose is to furthest reduce the sensitivity of the detector to background gamma rays in the environment on the premise of ensuring the sufficient detection efficiency for cold neutrons and hot neutrons, so that the neutron-gamma discrimination effect of the whole system is improved. The light guide glass with high refractive index can improve the collection efficiency of the scintillation light. Moreover, the high-refractive-index glass is formed by casting, so that the light guide glass and the lithium glass fiber form a solid whole, the mechanical strength of the whole detector system is improved, and the detector system can be applied to severe petroleum logging without being damaged, such as high-strength mechanical vibration.
In conclusion, the detector in the embodiment adopts the fiber of the lithium glass to manufacture the cold neutron detection shell layer and the hot neutron detection shell layer, so that workers can manufacture qualified neutron detectors more easily, meanwhile, the usage amount of the lithium glass is greatly reduced, the sensitivity of the neutron detectors to background gamma rays can be further reduced, the sensitivity of the whole detector to the gamma rays can be reduced by 10-20%, and the gamma-neutron discrimination effect of the detector is effectively improved; and the neutron detection sensitive material is made of lithium glass, so that a cylindrical tubular lithium glass shell structure can be manufactured, and fine fibers can also be manufactured. In the aspect of process, the fiber is easier to realize, and the usage amount of lithium glass in the detector can be reduced, so that the detection performance and the manufacturing economy of the detector are improved.
The lithium glass scintillating fiber can be produced in batch, and can be applied to any field needing to detect cold and hot neutrons, such as nondestructive inspection, in the later stage. The reason is that the lithium glass scintillator manufactured into the fiber shape can be manufactured into a neutron detector framework layer with any shape, such as a common cylindrical shape, a flat plate shape and the like.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (6)
1. The utility model provides a cold, thermal neutron detector that oil logging was used, the detector is in including the detector main part that light guide glass constitutes, setting the photomultiplier of detector main part bottom and set up in coupling layer between detector main part and the photomultiplier, its characterized in that: the detector also comprises a lithium glass fiber layer arranged on the periphery of the detector main body and a total reflection layer arranged on the outer end face of the lithium glass fiber layer, wherein the lithium glass fiber layer is formed by tightly arranging a plurality of layers of lithium glass fibers, and the detector main body and the lithium glass fiber layer form an integral core glass layer through a casting forming process.
2. The cold and hot neutron detector for oil logging according to claim 1, wherein: the light refraction coefficient of the detector main body is higher than that of the lithium glass fiber layer.
3. The cold and hot neutron detector for oil logging according to claim 1 or 2, wherein: the lithium glass fiber layer is formed by closely arranging 40-100 layers of lithium glass fibers.
4. The cold and hot neutron detector for oil logging according to claim 2, wherein: the detector main body is made of glass with high heat resistance.
5. The preparation method of the lithium glass fiber is characterized by comprising the following steps:
1) and preparing a lithium glass batch:
calculating the use amount of each component according to the weight percentage of the lithium glass composition, and then correspondingly weighing each component and mixing to form a batch;
2) melting lithium glass:
A. placing the batch obtained in the step 1) into a crucible, placing the crucible into a molybdenum rod furnace at 1400 ℃ and 1450 ℃, and carrying out high-temperature melting in a strong reducing atmosphere;
B. b, drying the lithium glass fiber material obtained in the step A at a high temperature, and taking out for later use;
C. putting all the dried lithium glass fiber materials into a platinum crucible furnace, putting the platinum crucible furnace into a 1450-1500 ℃ molybdenum rod furnace in a strong reducing atmosphere for melting, and then cooling and discharging;
3) and forming the lithium glass fiber:
and reducing the temperature of the melted lithium glass fiber material to 1200-1300 ℃, and starting wire drawing at a high temperature. The rotating speed of the drawing machine is adjusted to be 900-1400 rpm, and the continuous fiber with the diameter of 20-50 microns is drawn.
4) Annealing of the lithium glass fiber:
and after the lithium glass fiber is solidified, quickly putting the lithium glass fiber into a muffle furnace at a high temperature for heat preservation, and then closing the muffle furnace for cooling to obtain the finally used lithium glass fiber.
6. The method for preparing lithium glass fiber according to claim 5, characterized in that: the lithium glass fiber is prepared by adopting a platinum-substituted crucible wire drawing process at high temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037392.8A CN110780339B (en) | 2019-10-29 | 2019-10-29 | Cold and hot neutron detector for petroleum well logging and lithium glass fiber preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037392.8A CN110780339B (en) | 2019-10-29 | 2019-10-29 | Cold and hot neutron detector for petroleum well logging and lithium glass fiber preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110780339A true CN110780339A (en) | 2020-02-11 |
| CN110780339B CN110780339B (en) | 2024-04-12 |
Family
ID=69387292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911037392.8A Active CN110780339B (en) | 2019-10-29 | 2019-10-29 | Cold and hot neutron detector for petroleum well logging and lithium glass fiber preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110780339B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1264388A (en) * | 1968-05-02 | 1972-02-23 | ||
| US5680423A (en) * | 1995-03-24 | 1997-10-21 | Battelle Memorial Institute | Method and apparatus for detecting neutrons |
| CN1715230A (en) * | 2004-06-10 | 2006-01-04 | 通用电气公司 | Compositions and methods for scintillator arrays |
| CN1903763A (en) * | 2006-08-09 | 2007-01-31 | 中国建筑材料科学研究总院 | Glass scintillator for thermal neutron detection and its preparation method |
| RU2323453C1 (en) * | 2006-11-03 | 2008-04-27 | ГОУ ВПО "Уральский государственный технический университет - УПИ" | Light fiber-based scintillation detector |
| CN101699316A (en) * | 2009-10-26 | 2010-04-28 | 西北核技术研究所 | Gas scintillation based fission neutron detector |
| CN104445965A (en) * | 2014-05-15 | 2015-03-25 | 江西大华云通玻纤有限公司 | High-performance glass fiber |
| CN208506260U (en) * | 2018-08-03 | 2019-02-15 | 中国辐射防护研究院 | A kind of novel flashing fiberglass panel structure is with alpha particle detector |
| CN209182517U (en) * | 2018-10-16 | 2019-07-30 | 华北电力大学 | A kind of hot and cold neutron detector of novel Li-glass scintillator for oil well logging |
-
2019
- 2019-10-29 CN CN201911037392.8A patent/CN110780339B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1264388A (en) * | 1968-05-02 | 1972-02-23 | ||
| US5680423A (en) * | 1995-03-24 | 1997-10-21 | Battelle Memorial Institute | Method and apparatus for detecting neutrons |
| CN1715230A (en) * | 2004-06-10 | 2006-01-04 | 通用电气公司 | Compositions and methods for scintillator arrays |
| CN1903763A (en) * | 2006-08-09 | 2007-01-31 | 中国建筑材料科学研究总院 | Glass scintillator for thermal neutron detection and its preparation method |
| RU2323453C1 (en) * | 2006-11-03 | 2008-04-27 | ГОУ ВПО "Уральский государственный технический университет - УПИ" | Light fiber-based scintillation detector |
| CN101699316A (en) * | 2009-10-26 | 2010-04-28 | 西北核技术研究所 | Gas scintillation based fission neutron detector |
| CN104445965A (en) * | 2014-05-15 | 2015-03-25 | 江西大华云通玻纤有限公司 | High-performance glass fiber |
| CN208506260U (en) * | 2018-08-03 | 2019-02-15 | 中国辐射防护研究院 | A kind of novel flashing fiberglass panel structure is with alpha particle detector |
| CN209182517U (en) * | 2018-10-16 | 2019-07-30 | 华北电力大学 | A kind of hot and cold neutron detector of novel Li-glass scintillator for oil well logging |
Non-Patent Citations (1)
| Title |
|---|
| 石宗仁: "探测快中子的新技术", 核电子学与探测技术, no. 05, 20 September 1997 (1997-09-20) * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110780339B (en) | 2024-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106517772B (en) | The light and preparation method thereof of fibre faceplate is prepared for pulling plate molding | |
| EP0068580B1 (en) | Optical fibre of the graded index type and method of producing same | |
| CN105481245B (en) | Composition of scintillation glass for preparing flash fiber panel and preparation method thereof | |
| WO2023147756A1 (en) | Preparation method and use for φ40 mm large-size high-contrast optical fiber inverter | |
| WO2023147757A1 (en) | Light absorption material glass for high-contrast optical fiber inverter, and preparation method therefor | |
| CN104609722B (en) | Preparation method of tube-melt co-drawn bismuth-doped optical fiber | |
| CN113003941B (en) | Glass composition, glass fiber cotton, fiber blended yarn and preparation method | |
| CN106565085B (en) | Optical glass composition, optical glass and its preparation method and application | |
| CN116253507B (en) | High-refractive-index radiation-resistant glass material, and preparation method and application thereof | |
| CN105293905A (en) | Flashing optical fiber panel and preparation method | |
| WO2020177355A1 (en) | Single-mode optical fiber having ultra-low loss and large effective area and preparation method therefor | |
| CN107337911A (en) | A kind of modified PBT material, pressure-resistant Loose tube and the optical cable using the Loose tube | |
| CN110183108A (en) | Optical fiber cortex glass and its mechanical trombone slide forming method for fibre optic image transmission element | |
| CN110780339B (en) | Cold and hot neutron detector for petroleum well logging and lithium glass fiber preparation method | |
| CN209182517U (en) | A kind of hot and cold neutron detector of novel Li-glass scintillator for oil well logging | |
| CN211955858U (en) | Cold and hot neutron detector for oil well logging | |
| CN116553822B (en) | Low-refractive-index radiation-resistant glass material, and preparation method and application thereof | |
| CN103833219B (en) | Opticglass | |
| CN110117158A (en) | It is a kind of with low-refraction, the optical glass of high transmittance and its preparation method and application | |
| CN105669023A (en) | Glass scintillator, preparation method thereof and thermal neutron detection method | |
| CN110002763B (en) | Core material glass for optical fiber panel and preparation method and application thereof | |
| CN106277806A (en) | A kind of rear-earth-doped oxy-fluoride glass optical fiber and manufacture method | |
| BREWSTER et al. | Radiation‐Absorbing Glasses | |
| CN115353284B (en) | High-contrast optical fiber image transmission element and preparation method thereof | |
| CN110156335A (en) | A kind of middle numerical aperture fiber optical glass and its preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |