CN205301597U - Low background liquid scintillation spectrometer measuring device - Google Patents
Low background liquid scintillation spectrometer measuring device Download PDFInfo
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- CN205301597U CN205301597U CN201521102318.7U CN201521102318U CN205301597U CN 205301597 U CN205301597 U CN 205301597U CN 201521102318 U CN201521102318 U CN 201521102318U CN 205301597 U CN205301597 U CN 205301597U
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- 230000005540 biological transmission Effects 0.000 abstract 1
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
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Abstract
The utility model discloses a low background liquid scintillation spectrometer measuring device, include: a detector, the detector comprises at the indoor collection device of lead screen room and setting, and collection device includes by collecting the cavity, gathering tetrafluoro light room, plastic scintillator and optical detection collector, gathers tetrafluoro light room and sets up in collecting the cavity, and plastic scintillator sets up at the collection cavity and gathers between the tetrafluoro light room, and the setting of optical detection collector is in gathering tetrafluoro light room, a data analysis system, data analysis system comprises pulse signal processing module and data processing module, and pulse signal processing module is connected with optical detection collector and data processing module respectively, and there is the sample bottle of liquid to send into the indoor conveying subassembly of measuring chamber the loading with data processing module is connected. The utility model discloses low background liquid scintillation spectrometer measuring device through strict design lead screen room, level lift transmission system, circuit etc. Realizes the low background absolute counting to beta radionuclide.
Description
Technical field
This utility model relates to a kind of Low background liquid scintillation spectrometer measurement apparatus, the measurement apparatus of particular design particularly to a kind of tritium for low content and carbon-14 environmental sample.
Background technology
Radiation control manages department when the occasions such as geology, environment and biomedicine carry out radiation environment with radiation protection detection, needs can meet the instrument that measurement mental retardation beta activity nucleic is main and measure, then instrument is highly sensitive, background is low, efficiency is high, detection limit is low to need to ask measurement.
At present, meet at existing three pairs and be broadly divided into two kinds than liquid scintillation counting system, the first three pairs meet ratio in liquid scintillation counting system, its light detection device and light shield are respectively adopted aluminum light room and make with easy gobo, there is no outside lead screen device, can only be simple for three pipe, two tube efficiency ratio method scientific research. Its shortcoming is: owing to apparatus structure is excessively simple and easy, operate complex, is suitable only for the person skilled operation of this device; Owing to its background counting rate is high, it is suitable only for three pairs and meets the relevant pure measurement technology research of ratio, it is impossible to for the high-acruracy survey of environmental classes low-activity sample. Three pairs of sample sizes met than arranging measurement in liquid scintillation counting system of the second are limited, semi-automatic measuring mode, and the scope of application is little, require strict to the condition of laboratory.
These Low background liquid above-mentioned dodges spectrometer and is not all well positioned to meet measurement, and it is full automatic that this is accomplished by design, increases the measuring amount of sample, and the condition of laboratory requires not strict device.
It is accordingly required in particular to a kind of novel ultralow background fluid scintillation spectrometer measurement apparatus, solve above-mentioned existing Problems existing.
Utility model content
The purpose of this utility model is in that: provide a kind of Low background liquid scintillation spectrometer measurement apparatus for the deficiencies in the prior art, adopt external computer to carry out data analysis, application is expanded and full automatic measurement, environmental sample absolute measurement can be realized, elevating lever can be passed through simultaneously and change the ratio of three main photomultiplier tube Nt/Nd, it is achieved three pairs meet the three pipe liquid scintillation counting systems than automatic absolute measurement.
This utility model is solved the technical problem that to realize by the following technical solutions:
A kind of Low background liquid scintillation spectrometer measurement apparatus, including:
One detector, described detector is made up of lead screen room and the collection device that is arranged on described lead screen indoor, described collection device includes the collection chamber, polytetrafluoro light room, plastic scintillant and the optical detection catcher that are made up of oxygen-free copper preparative layer, described polytetrafluoro light room is arranged in described collection chamber, described plastic scintillant is arranged between described collection chamber and polytetrafluoro light room, and it is indoor that described optical detection catcher is arranged on described polytetrafluoro light;
One data analysis system, described data analysis system is made up of burst process signaling module and data processing module, and described burst process signaling module is connected with described optical detection catcher and data processing module respectively; And
One sample bottle that will be loaded with liquid being connected with described data processing module sends into the transfer assembly measured in chamber.
In a preferred embodiment of the present utility model, described optical detection catcher includes main detector, anticoincidence detector and liquid dodge bottle to be fixed and height adjustment assembly, described liquid sudden strain of a muscle bottle is fixing is arranged on polytetrafluoro light indoor with height adjustment assembly, described main detector is made up of a main photomultiplier tube assembly, described main photomultiplier tube assembly is that 120 �� of symmetrical expression distributions are constituted by three identical main photomultiplier tubes, one end of each main photomultiplier tube is connected to described liquid sudden strain of a muscle bottle and fixes and on height adjustment assembly, its other end exposes on the outer wall of lead screen room after sequentially passing through described polytetrafluoro light room and lead screen room, described anticoincidence detector is made up of an auxiliary photomultiplier tube assembly, described auxiliary photomultiplier tube assembly is that 120 �� of symmetrical expression distributions are constituted by three identical auxiliary photomultiplier tubes, described auxiliary photomultiplier tube is arranged on the top between the main photomultiplier tube of adjacent two, one end of each auxiliary photomultiplier tube is connected to described liquid sudden strain of a muscle bottle and fixes and on height adjustment assembly, its other end exposes after sequentially passing through described polytetrafluoro light room and lead screen room on the outer wall of lead screen room.
In a preferred embodiment of the present utility model, described burst process signaling module includes low-tension supply module, high-voltage power module, preamplifier, discriminator, dead time control unit, forming unit, coincident circuit unit, delayer, anticoincidence unit, it is added amplifier, linear gate, double, two multiple tracks and single track controller, the described outfan of low-tension supply module is connected with the input of high-voltage power module, the input of described three main photomultiplier tubes and three auxiliary photomultiplier tubes is connected with the outfan of described high-voltage power module respectively, its outfan is connected with the input of described preamplifier respectively, the outfan of described three photomultiplier tubes is also connected with described addition amplifier respectively, and the outfan of described preamplifier passes sequentially through described discriminator, dead time control unit, forming unit, coincident circuit unit, delayer, anticoincidence unit, linear gate is connected with the input of described addition amplifier, and the outfan of described addition amplifier is connected with described pair of multiple tracks, described single track controller respectively with described preamplifier, discriminator, dead time control unit, forming unit, coincident circuit unit, delayer, anticoincidence unit, linear gate, preamplifier, double, two multiple tracks connect, and described single track controller is also connected with described data processing module.
In a preferred embodiment of the present utility model, described data processing module includes computer, printer and display screen, and the input of described computer is connected with described single track controller, and its outfan is connected with printer and display screen respectively.
In a preferred embodiment of the present utility model, described transfer assembly includes:
One is arranged on the horizontal transport mechanism below the measurement chamber of scintillation counter, and described horizontal transport mechanism includes horizontal transmission bench, feed conveyor belt, charging motor, material returned conveyer belt, material returned motor, the first horizontal conveying belt, the first horizontal transmission motor, the second horizontal conveying belt, the second horizontal transmission motor, horizontal location sensor, scanning device and some specimen holders; Described feed conveyor belt, material returned conveyer belt are disposed on described horizontal transmission bench along the width of described horizontal transmission bench, and respectively by described charging motor, material returned motor actuation movement; Described first horizontal conveying belt is arranged on the first end of described feed conveyor belt and material returned conveyer belt and the direction of transfer of its direction of transfer and conveyer belt end face and described feed conveyor belt and material returned conveyer belt is mutually perpendicular to, and by described first horizontal transmission motor actuation movement; Described second horizontal conveying belt is arranged on the second end of described feed conveyor belt and material returned conveyer belt and the direction of transfer of its direction of transfer and conveyer belt end face and described feed conveyor belt and material returned conveyer belt is mutually perpendicular to, and by described second horizontal transmission motor actuation movement; Described horizontal location sensor is arranged on described first horizontal conveying belt outside near the end of feed conveyor belt; Described scanning device is arranged on described first horizontal conveying belt on the end of material returned conveyer belt; Each specimen holder is long strip type structure, and it is arranged at intervals with some storage tanks for placing sample bottle along its length;
One is arranged on the vertical connecting gear below described horizontal transport mechanism, described vertical connecting gear includes elevating lever, electronic slide block, vertical lifting motor and vertically oriented sensor, described elevating lever is vertically installed on described electronic slide block and is positioned at the lower section of described feed conveyor belt and the intersection of the second horizontal conveying belt, described electronic slide block couples with vertical lifting motor and is driven up and down motion by described vertical lifting motor, and described vertically oriented sensor is arranged on described electronic slide block; And
One PLC control system, described PLC control system is connected with described charging motor, material returned motor, first, second horizontal transmission motor, horizontal location sensor, scanning device, vertical lifting motor and vertically oriented sensor respectively;
Described some specimen holders being placed with sample bottle enter the first horizontal conveying belt from described first horizontal conveying belt near the end of material returned conveyer belt successively, described first horizontal conveying belt drives specimen holder to move in feed conveyor belt, described feed conveyor belt drives sample rack moving, move to the intersection of described feed conveyor belt and the second horizontal conveying belt, now vertical lifting motor drives electronic slide block to move upward, and drive elevating lever rise and sent on specimen holder top in the measurement chamber of the scintillation counter above it, liquid in sample bottle in specimen holder is measured by scintillation counter, after to be measured, vertical lifting motor drives electronic slide block to move downward, and drive elevating lever to decline, specimen holder drops on the intersection of described feed conveyor belt and the second horizontal conveying belt, moved on material returned conveyer belt by the second horizontal conveying belt again, material returned conveyer belt drives sample rack moving near the first horizontal conveying belt place discharging.
In a preferred embodiment of the present utility model, described horizontal transmission bench is positioned at described feed conveyor belt the side of material returned conveyer belt is provided with one first rib, described horizontal transmission bench is positioned at the described material returned conveyer belt side of feed conveyor belt is provided with one second rib, described horizontal transmission bench is provided with a parting bead between described feed conveyor belt and material returned conveyer belt, the charging Transfer pipe of described feed conveyor belt is constituted between described first rib and parting bead, the material returned Transfer pipe of described material returned conveyer belt is constituted between described second rib and parting bead.
In a preferred embodiment of the present utility model, described Low background liquid scintillation spectrometer measurement apparatus also includes a refrigeration system, and described refrigeration system is made up of an output constant air-conditioning of temperature.
Owing to have employed technical scheme as above, the beneficial effects of the utility model are in that: this utility model Low background liquid scintillation spectrometer measurement apparatus, by lead screen room, horizontal lifting drive system, the strict design of circuit etc., realize the Low background absolute measurement to beta activity nucleic, dodge the liquid in horizontal lifting drive system by liquid and dodge the fixing amplitude changing Nt/Nd value with height adjustment assembly of bottle, realize the absolute measurement of sample, with three pairs meet than method, avoid built-in standard gamma radioactive source, distinctive analysis software realizes long data analysis, measure object and have bigger extension, drive mechanism design realizes all automatic measurement of sample and provides substantial amounts of sample bottle to measure. it is suitable for existing environmental monitoring and radiation protection requirements of one's work, fills up the blank of domestic Related product.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is connection block diagram of the present utility model.
Fig. 2 is the structural representation of lead screen room of the present utility model.
Fig. 3 is the structural representation of collection device of the present utility model.
Fig. 4 is the structural representation of data analysis system of the present utility model.
Fig. 5 is the top view of transfer assembly of the present utility model.
Fig. 6 is the left view of transfer assembly of the present utility model.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with being specifically illustrating, this utility model is expanded on further.
It is Low background liquid scintillation spectrometer measurement apparatus referring to what Fig. 1, figure provided, including detector 1000, data analysis system 2000, transfer assembly 3000 and refrigeration system 4000, is communicated with one another connection by multicore cable between them. Refrigeration system 4000 is made up of an output constant air-conditioning of temperature.
Detector 1000 is made up of lead screen room 1100 and the collection device 1200 that is arranged in lead screen room 1100. referring to Fig. 2 and Fig. 3, lead screen room 1100 is made up of the plumbous ear 1120 on one-body molded and that thickness is 4cm hexagon lead screen floor and six periphery walls being disposed in an evenly spaced relation in lead screen floor 1110. referring to Fig. 3, collection device 1200 includes the collection chamber 1210, polytetrafluoro light room 1220, plastic scintillant 1230 and the optical detection catcher 1240 that are made up of oxygen-free copper preparative layer, polytetrafluoro light room 1220 is arranged in collection chamber 121, and plastic scintillant 1230 is arranged between collection chamber 1210 and polytetrafluoro light room 1220. optical detection catcher 1240 includes main detector, anticoincidence detector and liquid dodge bottle to be fixed and height adjustment assembly 1241, liquid sudden strain of a muscle bottle is fixing to be arranged in polytetrafluoro light room 1220 with height adjustment assembly 1241, described main detector is made up of a main photomultiplier tube assembly, described main photomultiplier tube assembly is made up of in 120 �� of symmetrical expression distributions three identical main photomultiplier tubes 10, one end of each main photomultiplier tube 10 is connected to liquid sudden strain of a muscle bottle and fixes and on height adjustment assembly 1241, its other end exposes on the outer wall of lead screen room 1100 after sequentially passing through polytetrafluoro light room 1220 and lead screen room 1100, described anticoincidence detector is made up of an auxiliary photomultiplier tube assembly, described auxiliary photomultiplier tube assembly is made up of in 120 �� of symmetrical expression distributions three identical auxiliary photomultiplier tubes 20, auxiliary photomultiplier tube 20 is arranged on the top between the main photomultiplier tube 10 of adjacent two, one end of each auxiliary photomultiplier tube 20 is connected to liquid sudden strain of a muscle bottle and fixes and on height adjustment assembly 1241, its other end exposes after sequentially passing through polytetrafluoro light room 1220 and lead screen room 1100 on the outer wall of lead screen room 1100.
Referring to Fig. 4, data analysis system 2000 is made up of burst process signaling module 2100 and data processing module 2200.
Burst process signaling module 2100 includes low-tension supply module 2101, high-voltage power module 2102, preamplifier 2103, discriminator 2104, dead time control unit 2105, forming unit 2106, coincident circuit unit 2107, delayer 2108, anticoincidence unit 2109, linear gate 2110, is added amplifier 2111, double, two multiple tracks 2112 and single track controller 2113. the outfan of low-tension supply module 2101 is connected with the input of high-voltage power module 2102, the input of three main photomultiplier tubes 10 and three auxiliary photomultiplier tubes 20 is connected with the outfan of high-voltage power module 2102 respectively, its outfan is connected with the input of preamplifier 2103 respectively, the outfan of three photomultiplier tubes 10 is also connected with addition amplifier 2110 respectively, and the outfan of preamplifier 2103 passes sequentially through discriminator 2104, dead time control unit 2105, forming unit 2106, coincident circuit unit 2107, delayer 2108, anticoincidence unit 2109, linear gate 2110 is connected with the input being added amplifier 2111, and the outfan being added amplifier 2111 is connected with pair multiple tracks 2112, single track controller 2113 respectively with preamplifier 2103, discriminator 2104, dead time control unit 2105, forming unit 2106, coincident circuit unit 2107, delayer 2108, anticoincidence unit 2109, linear gate 2110, it is added amplifier 2111, double, two multiple tracks 2112 connect.
Data processing module 2200 includes computer 2201, printer 2202 and display screen 2203, and the input of computer 2201 is connected with single track controller 2113, and its outfan is connected with printer 2202 and display screen 2203 respectively.
Referring to Fig. 5 and Fig. 6, transfer assembly 3000 includes horizontal transport mechanism 3100, vertical connecting gear 3200 and PLC control system 3300, and PLC control system 3300 is connected with data processing module 2200.
Horizontal transport mechanism 3100 is arranged on the lower section measuring chamber (not shown) of scintillation counter. Horizontal transport mechanism 3100 includes horizontal transmission bench 3101, feed conveyor belt 3102, charging motor 3103, material returned conveyer belt 3104, material returned motor the 3105, first horizontal conveying belt the 3106, first horizontal transmission motor the 3107, second horizontal conveying belt the 3108, second horizontal transmission motor 3109, horizontal location sensor 3110, scanning device 3111 and some specimen holders 3112. Wherein, horizontal transmission bench 3101 is adopted and is formed from aluminium; Scanning device 3111 reads binary coding device for infrared scan; Specimen holder 3112 adopts polyurethane material to make; Charging motor 3103, material returned motor the 3105, first horizontal transmission motor 3107 and the second horizontal transmission motor 3109 are motor.
Feed conveyor belt 3102, material returned conveyer belt 3104 are disposed on horizontal transmission bench 3101 along the width of horizontal transmission bench 3101, and respectively by charging motor 3103, material returned motor 3105 actuation movement. First horizontal conveying belt 3106 is arranged on the first end of feed conveyor belt 3102 and material returned conveyer belt 3104 and the direction of transfer of its direction of transfer and conveyer belt end face and feed conveyor belt 3102 and material returned conveyer belt 3104 is mutually perpendicular to, and by the first horizontal transmission motor 3107 actuation movement. Second horizontal conveying belt 108 is arranged on the second end of feed conveyor belt 3102 and material returned conveyer belt 3104, and the direction of transfer of its direction of transfer and conveyer belt end face and feed conveyor belt 3102 and material returned conveyer belt 3104 is mutually perpendicular to, and by the second horizontal transmission motor 3109 actuation movement.Horizontal location sensor 3110 is arranged on first horizontal conveying belt 3106 outside near the end of feed conveyor belt 3102. Scanning device 3111 is arranged on the first horizontal conveying belt 3106 on the end of material returned conveyer belt 3104. Each specimen holder 3112 is long strip type structure, its along its length uniform intervals be provided with some storage tank 3112a for placing sample bottle.
Additionally, horizontal transmission bench 3101 is positioned at feed conveyor belt 3102 side of material returned conveyer belt 3104 is provided with one first rib 3113, horizontal transmission bench 3101 is positioned at material returned conveyer belt 3104 side of feed conveyor belt 3102 is provided with one second rib 3114, horizontal transmission bench 3101 is provided with a parting bead 3115 between feed conveyor belt 3102 and material returned conveyer belt 3104, the charging Transfer pipe of feed conveyor belt 3102 is constituted between first rib 3113 and parting bead 3115, the material returned Transfer pipe of material returned conveyer belt 3104 is constituted between second rib 3114 and parting bead 3115.
Vertical connecting gear 3200 is arranged on the lower section of horizontal transport mechanism 3100. Vertical connecting gear 3200 includes elevating lever 3210, electronic slide block 3220, vertical lifting motor (not shown) and vertically oriented sensor 3230. Elevating lever 3210 is vertically installed on electronic slide block 3220, and is positioned at the lower section of the intersection of feed conveyor belt 3102 and the second horizontal conveying belt 108. Electronic slide block 3220 couples with vertical lifting motor and is driven up and down motion by vertical lifting motor, and vertically oriented sensor 3230 is arranged on electronic slide block 3220. In the present embodiment, elevating lever 3210 adopts stainless steel material to make,
PLC control system 3300 respectively with charging motor 3103, material returned motor 3105, first, second horizontal transmission motor 3107,3109, horizontal location sensor 3110, scanning device 3111, vertical lifting motor and vertically oriented sensor 3230 be connected.
Some specimen holders 3112 being placed with sample bottle enter the first horizontal conveying belt 3106 from the first horizontal conveying belt 3106 successively near the end of material returned conveyer belt 3104, first pass through scanning device 3111 to be scanned, first horizontal conveying belt 3106 drives specimen holder 3112 to move under the driving of the first horizontal transmission motor 3107, when horizontal location sensor 3110 senses specimen holder 3112, first horizontal transmission motor 3107 quits work, and specimen holder 112 is moved in feed conveyor belt 3102;
Charging motor 3103 drives feed conveyor belt 3102 action, drives specimen holder to move to the intersection of feed conveyor belt 3102 and the second horizontal conveying belt 3108;
Now, vertical lifting motor drives electronic slide block 3220 to move upward, elevating lever 3210 is driven to rise and pushed up by specimen holder 3112 in the measurement chamber sending into the scintillation counter above it, liquid in sample bottle in specimen holder is measured by scintillation counter, after to be measured, vertical lifting motor drives electronic slide block 3220 to move downward, elevating lever 3210 is driven to decline, specimen holder 3112 drops on the intersection of feed conveyor belt 3102 and the second horizontal conveying belt 3108, moved on material returned conveyer belt 3104 by the second horizontal conveying belt 3108 again, material returned motor 3105 drives material returned conveyer belt 3104 action, specimen holder 3112 is driven to move near first horizontal conveying belt 3106 place's discharging.
In the present embodiment, ultralow background fluid scintillation spectrometer measurement apparatus, dodge the elevating lever in horizontal lifting drive system by liquid and change the amplitude of Nt/Nd value, it is achieved the absolute measurement of sample.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described. Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description is that principle of the present utility model is described; under the premise without departing from this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements both fall within the scope of claimed this utility model. This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (7)
1. a Low background liquid scintillation spectrometer measurement apparatus, it is characterised in that including:
One detector, described detector is made up of lead screen room and the collection device that is arranged on described lead screen indoor, described collection device includes the collection chamber, polytetrafluoro light room, plastic scintillant and the optical detection catcher that are made up of oxygen-free copper preparative layer, described polytetrafluoro light room is arranged in described collection chamber, and described plastic scintillant is arranged between described collection chamber and polytetrafluoro light room; Described optical detection catcher includes main detector, anticoincidence detector and liquid sudden strain of a muscle bottle to be fixed and height adjustment assembly, and described liquid sudden strain of a muscle bottle is fixing is arranged on polytetrafluoro light indoor with height adjustment assembly;
One data analysis system, described data analysis system is made up of burst process signaling module and data processing module, and described burst process signaling module is connected with described optical detection catcher and data processing module respectively; And
One sample bottle that will be loaded with liquid being connected with described data processing module sends into the transfer assembly measured in chamber.
2. Low background liquid scintillation spectrometer measurement apparatus as claimed in claim 1, it is characterized in that, described main detector is made up of a main photomultiplier tube assembly, described main photomultiplier tube assembly is that 120 �� of symmetrical expression distributions are constituted by three identical main photomultiplier tubes, one end of each main photomultiplier tube is connected to described liquid sudden strain of a muscle bottle and fixes and on height adjustment assembly, its other end exposes on the outer wall of lead screen room after sequentially passing through described polytetrafluoro light room and lead screen room, described anticoincidence detector is made up of an auxiliary photomultiplier tube assembly, described auxiliary photomultiplier tube assembly is that 120 �� of symmetrical expression distributions are constituted by three identical auxiliary photomultiplier tubes, described auxiliary photomultiplier tube is arranged on the top between the main photomultiplier tube of adjacent two, one end of each auxiliary photomultiplier tube is connected to described liquid sudden strain of a muscle bottle and fixes and on height adjustment assembly, its other end exposes after sequentially passing through described polytetrafluoro light room and lead screen room on the outer wall of lead screen room.
3. Low background liquid scintillation spectrometer measurement apparatus as claimed in claim 2, it is characterised in that described burst process signaling module includes low-tension supply module, high-voltage power module, preamplifier, discriminator, dead time control unit, forming unit, coincident circuit unit, delayer, anticoincidence unit, it is added amplifier, linear gate, double, two multiple tracks and single track controller, the described outfan of low-tension supply module is connected with the input of high-voltage power module, the input of described three main photomultiplier tubes and three auxiliary photomultiplier tubes is connected with the outfan of described high-voltage power module respectively, its outfan is connected with the input of described preamplifier respectively, the outfan of described three photomultiplier tubes is also connected with described addition amplifier respectively, and the outfan of described preamplifier passes sequentially through described discriminator, dead time control unit, forming unit, coincident circuit unit, delayer, anticoincidence unit, linear gate is connected with the input of described addition amplifier, and the outfan of described addition amplifier is connected with described pair of multiple tracks, described single track controller respectively with described preamplifier, discriminator, dead time control unit, forming unit, coincident circuit unit, delayer, anticoincidence unit, linear gate, preamplifier, double, two multiple tracks connect, and described single track controller is also connected with described data processing module.
4. Low background liquid scintillation spectrometer measurement apparatus as claimed in claim 3, it is characterized in that, described data processing module includes computer, printer and display screen, and the input of described computer is connected with described single track controller, and its outfan is connected with printer and display screen respectively.
5. Low background liquid scintillation spectrometer measurement apparatus as claimed in claim 1, it is characterised in that described transfer assembly includes:
One is arranged on the horizontal transport mechanism below the measurement chamber of scintillation counter, and described horizontal transport mechanism includes horizontal transmission bench, feed conveyor belt, charging motor, material returned conveyer belt, material returned motor, the first horizontal conveying belt, the first horizontal transmission motor, the second horizontal conveying belt, the second horizontal transmission motor, horizontal location sensor, scanning device and some specimen holders; Described feed conveyor belt, material returned conveyer belt are disposed on described horizontal transmission bench along the width of described horizontal transmission bench, and respectively by described charging motor, material returned motor actuation movement; Described first horizontal conveying belt is arranged on the first end of described feed conveyor belt and material returned conveyer belt and the direction of transfer of its direction of transfer and conveyer belt end face and described feed conveyor belt and material returned conveyer belt is mutually perpendicular to, and by described first horizontal transmission motor actuation movement; Described second horizontal conveying belt is arranged on the second end of described feed conveyor belt and material returned conveyer belt and the direction of transfer of its direction of transfer and conveyer belt end face and described feed conveyor belt and material returned conveyer belt is mutually perpendicular to, and by described second horizontal transmission motor actuation movement; Described horizontal location sensor is arranged on described first horizontal conveying belt outside near the end of feed conveyor belt; Described scanning device is arranged on described first horizontal conveying belt on the end of material returned conveyer belt; Each specimen holder is long strip type structure, and it is arranged at intervals with some storage tanks for placing sample bottle along its length;
One is arranged on the vertical connecting gear below described horizontal transport mechanism, described vertical connecting gear includes elevating lever, electronic slide block, vertical lifting motor and vertically oriented sensor, described elevating lever is vertically installed on described electronic slide block and is positioned at the lower section of described feed conveyor belt and the intersection of the second horizontal conveying belt, described electronic slide block couples with vertical lifting motor and is driven up and down motion by described vertical lifting motor, and described vertically oriented sensor is arranged on described electronic slide block; And
One PLC control system being connected with data analysis system, described PLC control system is connected with described charging motor, material returned motor, first, second horizontal transmission motor, horizontal location sensor, scanning device, vertical lifting motor and vertically oriented sensor respectively;
Described some specimen holders being placed with sample bottle enter the first horizontal conveying belt from described first horizontal conveying belt near the end of material returned conveyer belt successively, described first horizontal conveying belt drives specimen holder to move in feed conveyor belt, described feed conveyor belt drives sample rack moving, move to the intersection of described feed conveyor belt and the second horizontal conveying belt, now vertical lifting motor drives electronic slide block to move upward, and drive elevating lever rise and sent on specimen holder top in the measurement chamber of the scintillation counter above it, liquid in sample bottle in specimen holder is measured by scintillation counter, after to be measured, vertical lifting motor drives electronic slide block to move downward, and drive elevating lever to decline, specimen holder drops on the intersection of described feed conveyor belt and the second horizontal conveying belt, moved on material returned conveyer belt by the second horizontal conveying belt again, material returned conveyer belt drives sample rack moving near the first horizontal conveying belt place discharging.
6. Low background liquid scintillation spectrometer measurement apparatus as claimed in claim 5, it is characterized in that, described horizontal transmission bench is positioned at described feed conveyor belt the side of material returned conveyer belt is provided with one first rib, described horizontal transmission bench is positioned at the described material returned conveyer belt side of feed conveyor belt is provided with one second rib, described horizontal transmission bench is provided with a parting bead between described feed conveyor belt and material returned conveyer belt, the charging Transfer pipe of described feed conveyor belt is constituted between described first rib and parting bead, the material returned Transfer pipe of described material returned conveyer belt is constituted between described second rib and parting bead.
7. the Low background liquid scintillation spectrometer measurement apparatus as according to any one of claim 1 to 6, it is characterised in that described Low background liquid scintillation spectrometer measurement apparatus also includes a refrigeration system, and described refrigeration system is made up of the air-conditioning that an output temperature is constant.
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| CN201521102318.7U CN205301597U (en) | 2015-12-28 | 2015-12-28 | Low background liquid scintillation spectrometer measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072889A (en) * | 2017-12-01 | 2018-05-25 | 上海新漫传感技术研究发展有限公司 | The method of work of ultralow background fluid scintillation spectrometer |
| CN109557575A (en) * | 2018-12-17 | 2019-04-02 | 中国原子能科学研究院 | A kind of neutron multiplicity measuring device and its application method |
-
2015
- 2015-12-28 CN CN201521102318.7U patent/CN205301597U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072889A (en) * | 2017-12-01 | 2018-05-25 | 上海新漫传感技术研究发展有限公司 | The method of work of ultralow background fluid scintillation spectrometer |
| CN108072889B (en) * | 2017-12-01 | 2020-11-10 | 上海新漫传感技术研究发展有限公司 | Working method of ultralow background liquid scintillation spectrometer |
| CN109557575A (en) * | 2018-12-17 | 2019-04-02 | 中国原子能科学研究院 | A kind of neutron multiplicity measuring device and its application method |
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Address after: Zone A, Building 3, No. 1411 Yecheng Road, Jiading District, Shanghai, 201821 Patentee after: Shanghai xinman Sensor Technology Co.,Ltd. Address before: 201821 area a, building 3, No. 1411, Yecheng Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee before: SIM MAX TECHNOLOGY Co.,Ltd. |