CN209280932U - A kind of high temperature16N new detector - Google Patents
A kind of high temperature16N new detector Download PDFInfo
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- CN209280932U CN209280932U CN201821675224.2U CN201821675224U CN209280932U CN 209280932 U CN209280932 U CN 209280932U CN 201821675224 U CN201821675224 U CN 201821675224U CN 209280932 U CN209280932 U CN 209280932U
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Abstract
The utility model provides a kind of high temperature16N new detector, including shield, setting is shielding intracorporal shielding chamber, insulation heat preservation layer on shielding chamber inner wall is set, detector crystal is internally provided in insulation heat preservation layer, the front end of the detector crystal is provided with preposition processing board, and in the side of detector crystal at least provided with one group of steady Pu Yuan of sodium chloride.The utility model uses the detector of integrated design, and crystal detection is sealed in metal-back, to effectively reduce the electromagnetic interference in environment.
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 high temperature16The novel detection of N
Device.
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.
After the thermal energy for absorbing primary Ioops cooling water, secondary circuit cooling water is heated to boiling (about 260 DEG C of temperature) and forms water
Steam.The water vapor filtering is sent to steam turbine after falling the liquid water mixed, and turbogenerator operating is pushed to generate electricity.From vapour
The secondary circuit cooling water of turbine outflow is back to steam generator after condenser is condensed into liquid water.
There are tens of thousands of heat-transfer pipes inside steam generator.In order to improve heat transfer efficiency, the tube wall of every heat-transfer pipe is made
It is very thin, only 1.09mm.Due to moving the cooling water of high temperature, high pressure in heat-transfer pipe, thus heat-transfer pipe is subject to mechanical damage
Wound and corrosion harmfulness, to generate leakage.
Therefore, steam generator heat-transfer pipe leakage monitor is set in PWR Nuclear Power Plant, to nuclear power plant second
Road radioactivity protection barrier is monitored on-line, causes radioactive material contamination nuclear power plant secondary circuit to set after avoiding heat-transfer pipe from leaking
Standby or even accidental discharge, meaning are extremely important.
Utility model content
In view of this, there is provided a kind of high temperature for the main purpose of the utility model16N new detector.
The technical solution adopted in the utility model are as follows:
A kind of high temperature16N new detector, including
Shield, setting are shielding intracorporal shielding chamber, the insulation heat preservation layer on shielding chamber inner wall are arranged in, exhausted
Edge insulating layer is internally provided with detector crystal, and the front end of the detector crystal is provided with preposition processing board, and in detector
The side of crystal is at least provided with one group of steady Pu Yuan of sodium chloride.
Further, the detector crystal is sealed in stainless steel casing, the other side sealed insulation of stainless steel casing
Insulating layer.
Further, the insulation heat preservation layer is rock wool or SiO2One of aeroge.
Further, the preposition processing board includes that pre-amplifier unit, digital multi-channel, ARM processing board, high pressure are released
Put unit and16Radiation processing unit, the pre-amplifier unit connect phototransistor, phototransistor setting to N on the spot
In the steady Pu Yuanchu of sodium chloride, the digital multi-channel is separately connected pre-amplifier unit and ARM processing board, the ARM processing
Plate is connect with high pressure releasing unit, and high pressure releasing unit is connect with phototransistor, described16Radiation processing unit passes through N on the spot
RS485 interface is communicated with ARM processing board.
Further, described16Radiation processing unit includes ARM primary processor and connect with ARM primary processor N on the spot
Display screen, input keyboard, network interface and multiple ports I/O,
The display screen shows measurement data by the format of setting；
The keyboard inputs corresponding information；
The data that the RS485 port transmission or receiving front-end processing unit are sent；
The network port realizes the communication and data exchange with outer computer；
The port I/O receives environment or measured temperature, pressure and flow signal, output alarm or switch control letter
Number.
Further, the shielding chamber is lead screen room thickness 50mm in 4 π lead screen rooms.
The utility model uses the detector of integrated design, and crystal detection is sealed in metal-back, to be effectively reduced
Electromagnetic interference in environment.
Entirely16N detector designs in 4 π lead screen rooms, and vitriol chamber thickness 50mm reduces environmental disturbances.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the frame principle of preposition processing board in the utility model；
Fig. 3 is in the utility model16The frame principle of N radiation processing unit on the spot.
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 high temperature16N new detector, including
Shield 1, setting are shielding intracorporal shielding chamber, and the insulation heat preservation layer 3 on shielding chamber inner wall is arranged in,
Insulation heat preservation layer is internally provided with detector crystal 2, and the front end of the detector crystal is provided with preposition processing board 5, and is visiting
The side of device crystal is surveyed at least provided with the steady general source 4 of one group of sodium chloride.
The detector crystal 2 is sealed in stainless steel casing, the other side sealed insulation insulating layer 3 of stainless steel casing.
In the present invention, detector crystal 2 uses NaI crystal, density 3.667g/cm3；Crystal overclad layer is A3 stainless steel, density
7.8kg/cm3, top surface thickness 0.3cm, cylindrical side thickness 0.6cm；The insulation heat preservation layer is rock wool or SiO2One in aeroge
Kind, in the present invention, preferably aerosil, aerosil is that the thermal coefficient that is currently known is minimum
Solid, can be used as super insulating material, there is stainless steel casing outside heat guard, one end welded seal, other end O-ring is close
Envelope.Entire probe waterproof, heat-insulated, anti-strong motion.Thermal insulation layer SiO2The density 0.06g/cm of aeroge3, top surface and cylindrical side are thick
Degree is 6cm；Outer shell is A3 stainless steel, density 7.8kg/cm3, top surface thickness 0.5cm, cylindrical side thickness 0.3cm.
The shielding chamber is lead screen room thickness 50mm in 4 π lead screen rooms.
Referring to Fig. 2, the preposition processing board 5 is released including pre-amplifier unit, digital multi-channel, ARM processing board, high pressure
Put unit and16Radiation processing unit, the pre-amplifier unit connect phototransistor, phototransistor setting to N on the spot
In the steady Pu Yuanchu of sodium chloride, the digital multi-channel is separately connected pre-amplifier unit and ARM processing board, the ARM processing
Plate is connect with high pressure releasing unit, and high pressure releasing unit is connect with phototransistor, described16Radiation processing unit passes through N on the spot
RS485 interface is communicated with ARM processing board.
NaI (Tl) detector output signal is directly entered 2048 number multiple tracks after the preposition amplification of certain gain
It is acquired.
ARM processing board to digital multi-channel acquisition to gamma spectrum analyzed and handled, and adjust main spy if necessary
The power supply high voltage of device is surveyed, spectrum stabilization is carried out.
Digital multiple tracks and the design of ARM processing board form a front-end processing unit, are arranged in spy on different circuit boards
Survey device output end.
Front-end processing unit by RS485 interface with16Radiation processing unit is communicated N on the spot, and measured data is transmitted
It is processed and displayed to radiation processing unit on the spot (LRP).
It is described referring to Fig. 316Radiation processing unit includes ARM primary processor and connect with ARM primary processor N on the spot
Display screen, input keyboard, network interface and multiple ports I/O,
The display screen shows measurement data by the format of setting；
The keyboard inputs corresponding information；
The data that the RS485 port transmission or receiving front-end processing unit are sent；
The network port realizes the communication and data exchange with outer computer；
The port I/O receives environment or measured temperature, pressure and flow signal, output alarm or switch control letter
Number.
16Radiation processing unit (LRP) is communicated by RS485 interface with front-end processing unit N on the spot, is received and is handled
The data that front-end processing unit is sent according to setting format in display measurement data, and automatically switch dimension；According to presetting
Threshold value, show or issue corresponding state instruction or sound and light alarm signal；By the requirement of program, phase is inputted by panel and keypad
The information answered.
Radiation processing unit provides following measurement data, state instruction or sound and light alarm signal on the spot:
Measured value (1 tunnel analog quantity)
High level alarms (switching value)
High level alarms (switching value)
Failure and (or) Failure Alarm (switching value)
Inspection source starting or monitor are testing (switching value)
In addition, on the spot radiation processing unit can also provide surveyed radiation data a variety of average values (for example, 1min,
10min, 1h and day etc.).
When showing leak rate data, in power P >=20%FP, measurement data is shown by format, and automatically switches dimension；
In power P < 20%FP, total γ counting rate in measurement (0.2~2.2) MeV energy area, measurement data is shown by step-by-step counting format
Show.
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 (6)
1. a kind of high temperature16N new detector, which is characterized in that including
Shield, setting are shielding intracorporal shielding chamber, and the insulation heat preservation layer on shielding chamber inner wall is arranged in, and protect in insulation
Warm layer is internally provided with detector crystal, and the front end of the detector crystal is provided with preposition processing board, and in detector crystal
Side at least provided with one group of steady Pu Yuan of sodium chloride.
2. high temperature according to claim 116N new detector, which is characterized in that the detector crystal is sealed in stainless
In outer steel shell, the other side sealed insulation insulating layer of stainless steel casing.
3. high temperature according to claim 116N new detector, which is characterized in that the insulation heat preservation layer be rock wool or
SiO2One of aeroge.
4. high temperature according to claim 116N new detector, which is characterized in that the preposition processing board includes preceding storing
Big unit, digital multi-channel, ARM processing board, high pressure releasing unit and16N radiation processing unit on the spot, the preposition amplification
Unit connects phototransistor, which is arranged in the steady Pu Yuanchu of sodium chloride, and the digital multi-channel is separately connected
Pre-amplifier unit and ARM processing board, the ARM processing board are connect with high pressure releasing unit, and high pressure releasing unit and photoelectricity are brilliant
The connection of body pipe, it is described16Radiation processing unit is communicated by RS485 interface with ARM processing board N on the spot.
5. high temperature according to claim 116N new detector, which is characterized in that described16N radiation processing unit packet on the spot
ARM primary processor and the display screen connecting with ARM primary processor, input keyboard, network interface and multiple ports I/O are included,
The display screen shows measurement data by the format of setting；
The corresponding information of input keyboard；
The data that the RS485 interface transmission or receiving front-end processing unit are sent；
The network interface realizes the communication and data exchange with outer computer；
The port I/O receives environment or measured temperature, pressure and flow signal, output alarm or switch control signal.
6. high temperature according to claim 116N new detector, which is characterized in that the shielding chamber is 4 π lead screen rooms
It is interior, lead screen room thickness 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821675224.2U CN209280932U (en) | 2018-10-16 | 2018-10-16 | A kind of high temperature16N new detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821675224.2U CN209280932U (en) | 2018-10-16 | 2018-10-16 | A kind of high temperature16N new detector |
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| CN209280932U true CN209280932U (en) | 2019-08-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679312A (en) * | 2020-06-21 | 2020-09-18 | 陕西卫峰核电子有限公司 | Spectrum stabilizing method for N-16 radiation monitor |
| CN113096836A (en) * | 2021-03-30 | 2021-07-09 | 陕西卫峰核电子有限公司 | Neutron detection system and installation method thereof |
| CN114188049A (en) * | 2021-12-02 | 2022-03-15 | 中国核动力研究设计院 | Ray monitoring device, monitoring method, monitoring system and storage medium |
-
2018
- 2018-10-16 CN CN201821675224.2U patent/CN209280932U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679312A (en) * | 2020-06-21 | 2020-09-18 | 陕西卫峰核电子有限公司 | Spectrum stabilizing method for N-16 radiation monitor |
| CN113096836A (en) * | 2021-03-30 | 2021-07-09 | 陕西卫峰核电子有限公司 | Neutron detection system and installation method thereof |
| CN114188049A (en) * | 2021-12-02 | 2022-03-15 | 中国核动力研究设计院 | Ray monitoring device, monitoring method, monitoring system and storage medium |
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