CN208888374U - A kind of wide-range inert gas panel detector structure - Google Patents
A kind of wide-range inert gas panel detector structure Download PDFInfo
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- CN208888374U CN208888374U CN201821693500.8U CN201821693500U CN208888374U CN 208888374 U CN208888374 U CN 208888374U CN 201821693500 U CN201821693500 U CN 201821693500U CN 208888374 U CN208888374 U CN 208888374U
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Abstract
The utility model provides a kind of wide-range inert gas panel detector structure, including a pedestal, the inner hollow of pedestal is arranged, it constitutes inert gas and measures sealing space, it is set side by side with β modeling on the top of the base and dodges detection device and γ modeling sudden strain of a muscle detection device, detection device is dodged in the β modeling and γ modeling dodges between detection device and inert gas measurement sealing space and organic glass light guide plate and supporting plate is arranged, the organic glass light guide plate is arranged below supporting plate, detection device is dodged in the β modeling and the top that supporting plate is arranged in detection device is dodged in γ modeling, and it moulds to dodge between detection device and γ modeling sudden strain of a muscle detection device in β and is provided with lower range photomultiplier tube, lower range photomultiplier tube passes through the supporting plate and extends to the top of organic glass light guide plate, and temperature sensor and pressure sensor are installed on supporting plate, for measuring indifferent gas The pressure and temperature of bulk measurement sealing space.
Description
Technical field
The utility model relates to a kind of nuclear power plant's waste gas monitoring technical fields, and in particular to a kind of wide-range inert gas spy
Survey device structure.
Background technique
The nuclear power unit of PWR Nuclear Power Plant is usually made of two closed circulation loops, claims primary Ioops and two
Circuit.Primary Ioops include that equipment, the pressure such as nuclear reactor (being sealed in pressure vessel), main cooling water pump, voltage-stablizer are maintained at
120~160 atmospheric pressure；Secondary circuit includes that equipment, the pressure such as steam generator, condenser, main cooling water pump are maintained at 70
Atmospheric pressure.Primary Ioops are connected to the steam generator in reactor core and secondary circuit.
In order to ensure the radioactive substance in nuclear reactor does not enter environment, avoid causing the mankind and environment radiation dirty
It contaminates, the steam generator in the armamentarium and secondary circuit of the primary Ioops of PWR Nuclear Power Plant is mounted in containment.
In containment, pressure vessel, voltage-stablizer, main cooling water pump, the cooling water pipeline etc. of the sealing reactor of primary Ioops
Equipment itself and the flange being attached thereto, valve, pad, the steam generator of secondary circuit and its method being connected with primary Ioops
Orchid, valve, pad junction form the pressure boundary of pressurized water reactor coolant system.
Due to a variety of causes such as manufacture, installation, abrasion, corrosion, high temperature and pressure cooling water in primary Ioops may break through pressure
Force boundary constraint, leaks into containment.This leakage will generate two serious consequences: first is that reactor coolant water amount is insufficient,
Cause reactor operation safety accident；Second is that the radioactive substance contained in primary Ioops water enters environment, cause to environment and people
The harm of class.Thereby it is ensured that the integrality of pressurized water reactor nuclear power unit primary Ioops pressure boundary, transports the safety of nuclear power plant
Row is most important.
Currently, common RCPB leakage radioactivity monitoring method has the monitoring of containment radioaerosol, inert gas
The monitoring of activity concentration, although the monitoring detection efficient of existing, inert gas activity concentration is high, response
Time is short, but can only observational measurement radionuclide activity concentration；For lower levels of leakage, can not often require
Slip value is measured in time, application is very limited.
Utility model content
In view of this, there is provided a kind of wide-range inert gas panel detector structures for the main purpose of the utility model.
The technical solution adopted in the utility model are as follows:
A kind of wide-range inert gas panel detector structure, including
One pedestal, the inner hollow setting of pedestal, constitutes inert gas and measures sealing space,
It is set side by side with β modeling on the top of the base and dodges detection device and γ modeling sudden strain of a muscle detection device,
Detection device is dodged in the β modeling and γ modeling dodges between detection device and inert gas measurement sealing space and organic glass is arranged
Glass light guide plate and supporting plate, the organic glass light guide plate are arranged below supporting plate, and detection device is dodged in the β modeling and detection is dodged in γ modeling
The top of supporting plate is arranged in device, and moulds to dodge between detection device and γ modeling sudden strain of a muscle detection device in β and be provided with lower range photoelectricity times
Increase pipe, lower range photomultiplier tube passes through the supporting plate and extends to the top of organic glass light guide plate, and on supporting plate
Temperature sensor and pressure sensor are installed, for measuring the pressure and temperature of inert gas measurement sealing space.
Further, it includes β Su Shan mechanism that detection device is dodged in the β modeling, and the anticoincidence light of β Su Shan mechanism upper end is arranged in
Electric multiplier tube, and anticoincidence acquisition module is provided at β Su Shan mechanism.
Further, it includes γ Su Shan mechanism that detection device is dodged in the γ modeling, and a large amount of γ Su Shan mechanism upper end is arranged in
Journey photomultiplier tube, and high pressure and pre-amplification circuit are provided at γ Su Shan mechanism.
Further, the inert gas measurement sealing space forms sealing space using lead screen body.
Further, air inlet and air outlet are provided on the lead screen body, and are separately positioned on air inlet and go out
Sampling pipe and return-air duct at port.
The utility model devises a kind of wide-range inert gas panel detector structure, and γ Su Shan mechanism is dodged by one block of γ plastics
Bright body (thickness 50mm) connects two photomultiplier tubes compositions, for measuring gamma-rays, anticoincidence detector measurement range 3.7 ×
107Bq/m3~3.7 × 1010Bq/m3；Lower range detector connects photoelectricity by one piece with a thickness of the β plastic scintillant of 0.5mm~1mm
Multiplier tube composition, for detecting β ray, measurement range 3.7 × 103Bq/m3~3.7 × 108Bq/m3, relative to traditional
Detecting structure, measurement range are wider.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing and specific embodiment, in the signal of this utility model
Property embodiment and explanation be used to explain the utility model, but be not intended to limit the scope of the present invention.
Referring to Fig.1, the utility model provides a kind of wide-range inert gas panel detector structure, including
One pedestal, the inner hollow setting of pedestal, constitutes inert gas and measures sealing space,
It is set side by side with β modeling on the top of the base and dodges detection device 1 and γ modeling sudden strain of a muscle detection device 10,
Detection device 1 is dodged in the β modeling and γ modeling is dodged between detection device 10 and inert gas measurement sealing space 12 and is arranged
Organic glass light guide plate 2 and supporting plate 3, the organic glass light guide plate 2 are arranged below supporting plate 3, and detection device 1 is dodged in the β modeling
The top dodged detection device 10 and supporting plate 3 is set is moulded with γ, and is dodged between detection device 10 in β modeling sudden strain of a muscle detection device 1 and γ modeling
It is provided with lower range photomultiplier tube 11, lower range photomultiplier tube 11 passes through the supporting plate 3 and extends to organic glass and leads
The top of tabula rasa 2, and temperature sensor 5 and pressure sensor 6 are installed on supporting plate 3, for measuring inert gas measurement
The pressure and temperature of sealing space 12.
It includes β Su Shan mechanism that detection device 1 is dodged in the β modeling, and the anticoincidence photomultiplier tube of β Su Shan mechanism upper end is arranged in
6, and anticoincidence acquisition module 8 is provided at β Su Shan mechanism.
It includes γ Su Shan mechanism that detection device 10 is dodged in the γ modeling, and the high range photoelectricity times of γ Su Shan mechanism upper end is arranged in
Increase pipe 7, and is provided with high pressure and pre-amplification circuit at γ Su Shan mechanism.
The inert gas measurement sealing space 12 forms sealing space using lead screen body.
Air inlet and air outlet are provided on the lead screen body, and are separately positioned on taking at air inlet and air outlet
Sample pipeline and return-air duct.
Inert gas measuring chamber is the enclosure space (volume about 3L) of only one air inlet and a gas outlet.
β modeling is dodged with a thickness of 0.5mm~1mm, detection area about 300cm2.It can be increased using large area modeling sudden strain of a muscle Beta-ray
Counting rate improves detection efficient, reduces detection limit.The aluminium film that test surface surface layer is close to one layer 10 μm is dodged in β modeling, for preventing dirt
It contaminates crystal and photomultiplier tube collects scintillation light；In order to increase the intensity and light absorbing efficiency that β modeling is dodged, it is close to β modeling and dodges below
Be 10mm thickness organic glass light guide；The photomultiplier tube of lower range detector is arranged in light guide central location.
Detection device 1 is dodged in β modeling and γ modeling dodges the setting of detection device 10 in the upper surface of organic glass light guide plate 2, connects two
Photomultiplier tube forms anticoincidence detector and high range detector.
β modeling is dodged 1 signal of detection device and is exported using step-by-step counting mode, on the one hand deducts lower range detection for anticoincidence
The background count of device, on the other hand the inert gas activity concentration for range in calculating.
The signal that detection device 10 is dodged in γ modeling is exported using current integration mode, the radioactivity inertia under the conditions of putting for height
The activity concentration of gas calculates.The high pressure of high range detector can be automatically adjusted according to the size of the integrated signal of actual detection.
It moulds to dodge between detection device 1, γ modeling sudden strain of a muscle detection device 10 and organic glass light guide plate 2 in β and the stainless of 20mm is set
Steel plate supporting plate 3.On the one hand stainless steel pallet 3 carries installation β modeling and dodges detection device 1, γ modeling sudden strain of a muscle detection device 10, hygrosensor
And pressure detector, on the other hand the most low-energyγ-ray that inert gas emits is masked, in order to avoid generate a large amount of
False anticoincidence counts.
To be conducive to improve the detection upper limit of high range, the gamma-rays that inert gas emits under the conditions of detection height is put, in height
The window of φ 30mm or so is opened on steel plate immediately below range detector photomultiplier tube.
To calculate the noble gas activity activity concentration under standard state, in one end steel plate close to anticoincidence detector
On temperature and pressure sensor is also installed, to obtain temperature and pressure parameter.
The lead screen body of 50mm is used outside detector, effectively to completely cut off most of γ interference of external environment and other
Electromagnetic interference.
The utility model devises a kind of wide-range inert gas panel detector structure, and γ Su Shan mechanism is dodged by one block of γ plastics
Bright body (thickness 50mm) connects two photomultiplier tubes compositions, for measuring gamma-rays, anticoincidence detector measurement range 3.7 ×
107Bq/m3~3.7 × 1010Bq/m3；Lower range detector connects photoelectricity by one piece with a thickness of the β plastic scintillant of 0.5mm~1mm
Multiplier tube composition, for detecting β ray, measurement range 3.7 × 103Bq/m3~3.7 × 108Bq/m3, relative to traditional
Detecting structure, measurement range are wider.
Technical solution disclosed in the utility model embodiment is described in detail above, it is used herein specifically
Embodiment is expounded the principle and embodiment of the utility model embodiment, and the explanation of above embodiments is only applicable to
Help understands the principle of the utility model embodiment；At the same time, for those skilled in the art, it is real according to the utility model
Example is applied, there will be changes in terms of specific embodiments and scope of application, in conclusion the content of the present specification should not be understood
For limitations of the present invention.
Claims (5)
1. a kind of wide-range inert gas panel detector structure, which is characterized in that including
One pedestal, the inner hollow setting of pedestal, constitutes inert gas and measures sealing space,
It is set side by side with β modeling on the top of the base and dodges detection device and γ modeling sudden strain of a muscle detection device,
Detection device is dodged in the β modeling and γ modeling is dodged setting organic glass between detection device and inert gas measurement sealing space and led
Tabula rasa and supporting plate, the organic glass light guide plate are arranged below supporting plate, and detection device is dodged in the β modeling and detection device is dodged in γ modeling
The top of supporting plate is set, and moulds to dodge between detection device and γ modeling sudden strain of a muscle detection device in β and is provided with lower range photomultiplier tube,
Lower range photomultiplier tube passes through the supporting plate and extends to the top of organic glass light guide plate, and is equipped on supporting plate
Temperature sensor and pressure sensor, for measuring the pressure and temperature of inert gas measurement sealing space.
2. wide-range inert gas panel detector structure according to claim 1, which is characterized in that detection dress is dodged in the β modeling
The anticoincidence photomultiplier tube that β Su Shan mechanism upper end is set including β Su Shan mechanism is set, and is provided at β Su Shan mechanism
Anticoincidence acquisition module.
3. wide-range inert gas panel detector structure according to claim 1, which is characterized in that detection dress is dodged in the γ modeling
The high range photomultiplier tube that γ Su Shan mechanism upper end is set including γ Su Shan mechanism is set, and is set at γ Su Shan mechanism
It is equipped with high pressure and pre-amplification circuit.
4. wide-range inert gas panel detector structure according to claim 1, which is characterized in that the inert gas measurement
Sealing space forms sealing space using lead screen body.
5. wide-range inert gas panel detector structure according to claim 4, which is characterized in that set on the lead screen body
Air inlet and air outlet are equipped with, and are separately positioned on sampling pipe and return-air duct at air inlet and air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821693500.8U CN208888374U (en) | 2018-10-16 | 2018-10-16 | A kind of wide-range inert gas panel detector structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821693500.8U CN208888374U (en) | 2018-10-16 | 2018-10-16 | A kind of wide-range inert gas panel detector structure |
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| Publication Number | Publication Date |
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| CN208888374U true CN208888374U (en) | 2019-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821693500.8U Active CN208888374U (en) | 2018-10-16 | 2018-10-16 | A kind of wide-range inert gas panel detector structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114527239A (en) * | 2022-01-23 | 2022-05-24 | 陕西卫峰核电子有限公司 | Comprehensive monitoring system and method for emission gas of nuclear power station chimney |
| CN114527238A (en) * | 2022-01-21 | 2022-05-24 | 陕西卫峰核电子有限公司 | Inert gas detection system and method |
-
2018
- 2018-10-16 CN CN201821693500.8U patent/CN208888374U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114527238A (en) * | 2022-01-21 | 2022-05-24 | 陕西卫峰核电子有限公司 | Inert gas detection system and method |
| CN114527239A (en) * | 2022-01-23 | 2022-05-24 | 陕西卫峰核电子有限公司 | Comprehensive monitoring system and method for emission gas of nuclear power station chimney |
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