CN110057424A - Air-cooled passive nuclear level sensing device and its measurement method - Google Patents
Air-cooled passive nuclear level sensing device and its measurement method Download PDFInfo
- Publication number
- CN110057424A CN110057424A CN201910479533.5A CN201910479533A CN110057424A CN 110057424 A CN110057424 A CN 110057424A CN 201910479533 A CN201910479533 A CN 201910479533A CN 110057424 A CN110057424 A CN 110057424A
- Authority
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- China
- Prior art keywords
- pipeline
- air
- sensing device
- hopper
- middle hopper
- 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.)
- Pending
Links
- 238000000691 measurement method Methods 0.000 title abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 61
- 230000005251 gamma ray Effects 0.000 claims abstract description 30
- 239000000523 sample Substances 0.000 claims abstract description 22
- 230000004888 barrier function Effects 0.000 claims abstract description 9
- 239000006260 foam Substances 0.000 claims abstract description 9
- 239000012080 ambient air Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 18
- 239000000945 filler Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 12
- 239000003570 air Substances 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/288—X-rays; Gamma rays or other forms of ionising radiation
- G01F23/2885—X-rays; Gamma rays or other forms of ionising radiation for discrete levels
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Radiation (AREA)
Abstract
Air-cooled passive nuclear level sensing device and its measurement method, the level-sensing device include conduit assembly, gamma-ray transducer, support ring, exhaust fan and heat barrier foam layer.Conduit assembly includes first pipe, second pipe, third pipeline, the 4th pipeline and the 5th pipeline；First pipe, second pipe pass sequentially through jointing with third pipeline and connect, third pipeline, the 4th pipeline and the 5th pipeline successively horizontal connection.Gamma-ray transducer is suspended vacantly in the 4th pipeline with two support rings, and probe stretches out its outer wall, and exhaust fan is set to the tail portion of the 5th pipeline, and heat barrier foam layer is located on the outer wall of the 4th pipeline and the 5th pipeline.First pipe is installed on outdoor, is connected to cool ambient air；The probe of gamma-ray transducer measures the material position of material in middle hopper close to the outer wall of middle hopper.The present invention and measurement method can effectively measure and guarantee the material position of middle hopper materials inside, avoid high temperature, corrode and have in the environment of radiation in middle hopper material overflow or empty material.
Description
Technical field
The present invention relates to level of filler material fields of measurement, especially a kind of air-cooled passive nuclear level sensing device and its measurement side
Method.
Background technique
The method of conventionally employed electronic scale measurement weight of material not can accurately reflect true material situation, it is contemplated that hydrogen fluorine
Change the UF in middle hopper4、UO2There is mixed material etc. corrosivity to be difficult to carry out accurately by electronic scale and common level-sensing device
Measurement.And UF4、UO2Mixed material etc. has radioactivity, can be measured at present using passive nuclear level sensing device: when material reaches
To passive nuclear level sensing device sensor mounting location when, the numerical value for penetrating the gamma-rays trigger sensor of bucket wall becomes
Change, so that the variation by the numerical value of sensor measures controlling level in hopper.
However gamma-ray transducer probe has certain requirement to operating temperature, stable operating temperature range is -20
DEG C between 50 DEG C, when temperature is more than 50 DEG C, it will affect acquisition of the sensor probe to signal, sensor probe caused to acquire
Signal output distortion, so that the data of gamma-ray transducer probe measurement lose accuracy and reliability.Practical level of filler material is surveyed
When amount, middle hopper pipe laying is numerous, and up to 10 or so, and connecting with equipment is Hard link, and middle hopper is starting to transport
During row, initial temperature is lower, and it is more accurate to measure；Hopper run a period of time after, temperature promoted, hopper expanded by heating and
Hard link is used between equipment and hopper, leads to intermediate material measurement inaccuracy.Middle hopper in the process of running, exists certain
Shake, and hopper internal temperature is 300~400 DEG C, and pressure is less than 100KPa, and outside wall temperature is 70 DEG C or so, i.e. gamma-rays
The operating temperature of sensor probe is more than 50 DEG C, and the stability of gamma-ray transducer probe work and service life will receive serious shadow
It rings；And environment temperature is excessively high, the heat that the components itself such as chip, power supply in level-sensing device generate when working can not dissipate rapidly
It goes.Thus how improving high temperature, corrode and having the measurement of level-sensing device in the environment of radiation is current urgent problem to be solved.
Summary of the invention
The purpose of the present invention is overcome the above-mentioned insufficient of the prior art and provide a kind of air-cooled passive nuclear level sensing device and
Its measurement method, passive nuclear level sensing device have the multiple ventilation shafts connecting with cold air outside workshop and are wrapped in level-sensing device biography
Heat-barrier material outside sensor, and control the cold air introduced outside workshop and ventilation effectively drop is aerated to level-sensing device pipe laying
Temperature of low passive nuclear level sensing device during work measurement improves the detection efficient of passive nuclear level sensing device and uses the longevity
Life.
The technical scheme is that air-cooled passive nuclear level sensing device, including conduit assembly, gamma-ray transducer, branch
Pushing out ring, exhaust fan and heat barrier foam layer.
The conduit assembly includes first pipe, second pipe, third pipeline, the 4th pipeline and the 5th pipeline；Described
One pipeline, second pipe pass sequentially through jointing with third pipeline and connect, and third pipeline, the 4th pipeline and the 5th pipeline are successively
Pass through connecting flange horizontal connection.
The gamma-ray transducer is set in the 4th pipeline.
There are two the support rings, is set to the both ends of gamma-ray transducer, for gamma-ray transducer to be suspended vacantly
In the 4th pipeline, avoiding exhaust fan from opening when wind passes through gamma-ray transducer makes it generate shaking.
The exhaust fan is set to the tail portion of the 5th pipeline, and when exhaust fan is opened, extraneous cold air is in conduit assembly
Circulation.
The heat barrier foam layer is located on the outer wall of the 4th pipeline and the 5th pipeline, reduces ambient temperature to the 4th
The influence of pipeline and the 5th pipeline outer wall and pipe inner part.
In use, the first pipe is installed on outdoor, it is connected to cool ambient air；The probe of gamma-ray transducer is in
Between hopper outer wall, measure middle hopper in material material position.
The application method of aforementioned air-cooled passive nuclear level sensing device includes the following steps: to define the charging of middle hopper maximum
When material coboundary be loading hopper end position A, when middle hopper at least charges the coboundary of material be loading hopper at the beginning of
Beginning position B；
A is equipped with respectively in the upper end loading hopper end position A and lower end loading hopper initial position B of middle hopper outer wall
Multiple air-cooled passive nuclear level sensing devices, the first pipe of air-cooled passive nuclear level sensing device are mounted on outdoor, pop one's head in close
The outer wall of middle hopper.
B starts exhaust fan, and material enters in middle hopper from inlet pipeline, and the material in middle hopper is from outlet conduit
It is discharged into back segment process, multiple air-cooled passive nuclear level sensing devices measure the level of filler material in middle hopper.
C stops object if the air-cooled passive nuclear level sensing device at loading hopper end position A detects material signal
Material enters middle hopper from inlet pipeline；If the air-cooled passive nuclear level sensing device at loading hopper initial position B is not detected
Material signal then stops material from outlet conduit and middle hopper is discharged.
The further technical solution of the present invention is: the parallel middle hopper of multiple air-cooled passive nuclear level sensing devices in step A
Outer wall setting, the sensitive spot of probe is close to middle hopper outer wall.
Compared with the prior art, the invention has the following features:
1, the present invention cooperates conduit assembly to form ventilating system by exhaust fan, by the cool air inlet road component outside workshop
It is interior, it is that the probe of gamma-ray transducer cools down, makes level-sensing device the operation is stable, improve the real reliability of level-sensing device measurement data.
2, the present invention is by using heat-barrier material packet on the 4th pipeline of middle hopper and the outer wall of the 5th pipeline
It wraps up in, can effectively stop the high temperature outside middle hopper to enter in pipeline, influence the accuracy of the probe of gamma-ray transducer.
3, the present invention ensure that reasonable material position in hopper operational process, avoids the occurrence of material and overflows, scurries into inlet tube
Road or front-end-of-line, influence product quality；And it is avoided that material position deficiency simultaneously, lead to empty material, lower exit port pipe in middle hopper
Pressure in road disappears, and influences the feed of back segment process.
Detailed construction of the invention is further described below in conjunction with the drawings and specific embodiments.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is instrumentation plan of the invention；
Fig. 3 is the instrumentation plan of middle hopper maximum charging；
Fig. 4 is the instrumentation plan that middle hopper at least charges.
Specific embodiment
Embodiment one, as shown in figures 1-4, air-cooled passive nuclear level sensing device, including conduit assembly, gamma-ray transducer
2, support ring 3, exhaust fan 4 and heat barrier foam layer 5.
The conduit assembly includes first pipe 1-1, second pipe 1-2, third pipeline 1-3, the 4th pipeline 1-4 and the 5th
Pipeline 1-5.The first pipe 1-1, second pipe 1-2 pass sequentially through jointing with third pipeline 1-3 and connect, third pipeline
1-3, the 4th pipeline 1-4 and the 5th pipeline 1-5 pass sequentially through connecting flange horizontal connection.
The gamma-ray transducer 2 is set in the 4th pipeline 1-4；
There are two the support rings 3, is set to the both ends of gamma-ray transducer 2, for gamma-ray transducer 2 to be fixed on the 4th
In pipeline 1-4, so that the probe of gamma-ray transducer 2 vacantly comes into full contact with heat dissipation with air, and pass through the in cool ambient air
Gamma-ray transducer 2 is fixed when four pipeline 1-4, prevents its probe from generating and rocks, increase the probe of gamma-ray transducer 2
The accuracy of measurement.
The exhaust fan 4 is set to the tail portion of the 5th pipeline 1-5, by the cold air outside workshop from the when exhaust fan 4 is opened
One pipeline 1-1 is introduced, and flows through the gamma-ray transducer 2 and the 5th in second pipe 1-2, third pipeline 1-3 and the 4th pipeline 1-4
Pipeline 1-5, is continuously divulged information in conduit assembly, and the temperature in the 4th pipeline 1-4 is controlled in gamma-ray transducer 2
Within the temperature range of probe stationary work, probe is made to can be measured that true and reliable data.
The heat barrier foam layer 5 is located on the outer wall of the 4th pipeline 1-4 and the 5th pipeline 1-5.Due to the 4th pipeline 1-4
With the 5th pipeline 1-5 close to the outer wall of the middle hopper 7 of high temperature in measurement process, surrounding environment temperature is higher, the
Ring, which sets heat barrier foam layer 5, on the outer wall of four pipeline 1-4 and the 5th pipeline 1-5 can reduce the 4th pipeline 1-4 and the 5th pipeline 1-5
Temperature rise, reduce influence of the high temperature to the probe of gamma-ray transducer 2 of 7 outer wall of middle hopper.
In use, the first pipe 1-1 is installed on outdoor, it is connected to cool ambient air；The probe of gamma-ray transducer 2 leans on
The outer wall of nearly middle hopper 7, measures the material position of material in middle hopper 7.
The application method of aforementioned air-cooled passive nuclear level sensing device, includes the following steps:
The coboundary for defining material when middle hopper 7 is maximum to charge is loading hopper end position A, and middle hopper 7 at least charges
When material coboundary be loading hopper initial position B；
A distinguishes uniform ring in the upper end loading hopper end position A and lower end loading hopper initial position B of 7 outer wall of middle hopper
If the first pipe 1-1 of air-cooled passive nuclear level sensing device is mounted on outdoor there are four air-cooled passive nuclear level sensing device, visit
The material wall of the nearly middle hopper 7 of head rest.Specifically, as shown in Fig. 2, the parallel middle hopper outer wall of air-cooled passive nuclear level sensing device is set
It sets, the sensitive spot of probe is close to middle hopper outer wall.
B starts exhaust fan 4, and material enters in middle hopper 7 from inlet pipeline 8, and material in middle hopper 7 is from outlet
Pipeline 9 is discharged into back segment process, and eight air-cooled passive nuclear level sensing devices respectively carry out the level of filler material in middle hopper 7
Measurement；
C, if the air-cooled passive nuclear level sensing device at loading hopper end position A detects material signal, stop material from
Inlet pipeline 8 enters middle hopper 7, as shown in Figure 3；If the air-cooled passive nuclear level sensing device at loading hopper initial position B
Material signal is not detected, then stops material from outlet conduit 9 and middle hopper 7 is discharged, as shown in Figure 4.
Application method of the present invention can effectively ensure that the material position of its materials inside in 7 operational process of middle hopper, so that
Be not in that material overflows, scurry into inlet pipeline 8 or front end process, influence product quality；It is not in simultaneously due to material
Material position is insufficient, leads to empty material in tank, so that the pressure in lower exit port pipeline 9 disappears, influences the feed of back segment process.
Claims (3)
1. air-cooled passive nuclear level sensing device, it is characterized in that: include conduit assembly, gamma-ray transducer, support ring, exhaust fan and
Heat barrier foam layer；
The conduit assembly includes first pipe, second pipe, third pipeline, the 4th pipeline and the 5th pipeline；First pipe
Road, second pipe pass sequentially through jointing with third pipeline and connect, and third pipeline, the 4th pipeline and the 5th pipeline pass sequentially through
Connecting flange horizontal connection；
The gamma-ray transducer is set in the 4th pipeline；
There are two the support rings, is set to the both ends of gamma-ray transducer, for being suspended vacantly gamma-ray transducer
In four pipelines；
The exhaust fan is set to the tail portion of the 5th pipeline；
The heat barrier foam layer is located on the outer wall of the 4th pipeline and the 5th pipeline；
In use, the first pipe is installed on outdoor, it is connected to cool ambient air；The probe of gamma-ray transducer is close to middle material
The outer wall of bucket measures the material position of material in middle hopper.
2. the application method of air-cooled passive nuclear level sensing device as described in claim 1, it is characterized in that: including the following steps:
The coboundary of material is loading hopper end position A when defining the charging of middle hopper maximum, when middle hopper at least charges
The coboundary of material is loading hopper initial position B；
A is equipped with respectively in the upper end loading hopper end position A and lower end loading hopper initial position B of middle hopper outer wall
Multiple air-cooled passive nuclear level sensing devices, the first pipe of air-cooled passive nuclear level sensing device are mounted on outdoor, pop one's head in close
The outer wall of middle hopper；
B starts exhaust fan, and material enters in middle hopper from inlet pipeline, and the material in middle hopper is discharged from outlet conduit
Into back segment process, multiple air-cooled passive nuclear level sensing devices measure the level of filler material in middle hopper；
C, if the air-cooled passive nuclear level sensing device at loading hopper end position A detects material signal, stop material from
Inlet pipeline enters middle hopper；If material is not detected in the air-cooled passive nuclear level sensing device at loading hopper initial position B
Signal then stops material from outlet conduit and middle hopper is discharged.
3. the application method of air-cooled passive nuclear level sensing device as claimed in claim 2, it is characterized in that: multiple air-cooled in step A
The parallel middle hopper outer wall setting of the passive nuclear level sensing device of formula, the sensitive spot of probe is close to middle hopper outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910479533.5A CN110057424A (en) | 2019-06-04 | 2019-06-04 | Air-cooled passive nuclear level sensing device and its measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910479533.5A CN110057424A (en) | 2019-06-04 | 2019-06-04 | Air-cooled passive nuclear level sensing device and its measurement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110057424A true CN110057424A (en) | 2019-07-26 |
Family
ID=67325454
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910479533.5A Pending CN110057424A (en) | 2019-06-04 | 2019-06-04 | Air-cooled passive nuclear level sensing device and its measurement method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57521A (en) * | 1980-06-02 | 1982-01-05 | Toshiba Corp | Water level measuring device of nuclear reactor |
| CN204963332U (en) * | 2015-08-11 | 2016-01-13 | 甘肃酒钢集团宏兴钢铁股份有限公司 | High temperature radar charge level indicator cooling device |
| CN205079833U (en) * | 2015-10-23 | 2016-03-09 | 牟爱政 | Air -cooled ash bucket charge level indicator |
| CN107290024A (en) * | 2016-03-31 | 2017-10-24 | 中核新能核工业工程有限责任公司 | A kind of radio frequency admittance level-sensing device with anti-jamming circuit |
| CN209858020U (en) * | 2019-06-04 | 2019-12-27 | 南华大学 | Air-cooled passive nucleon level indicator |
-
2019
- 2019-06-04 CN CN201910479533.5A patent/CN110057424A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57521A (en) * | 1980-06-02 | 1982-01-05 | Toshiba Corp | Water level measuring device of nuclear reactor |
| CN204963332U (en) * | 2015-08-11 | 2016-01-13 | 甘肃酒钢集团宏兴钢铁股份有限公司 | High temperature radar charge level indicator cooling device |
| CN205079833U (en) * | 2015-10-23 | 2016-03-09 | 牟爱政 | Air -cooled ash bucket charge level indicator |
| CN107290024A (en) * | 2016-03-31 | 2017-10-24 | 中核新能核工业工程有限责任公司 | A kind of radio frequency admittance level-sensing device with anti-jamming circuit |
| CN209858020U (en) * | 2019-06-04 | 2019-12-27 | 南华大学 | Air-cooled passive nucleon level indicator |
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Application publication date: 20190726 |