CN108828652A - A kind of Radiation monitoring instrument protective device and its installation method - Google Patents
A kind of Radiation monitoring instrument protective device and its installation method Download PDFInfo
- Publication number
- CN108828652A CN108828652A CN201810889278.7A CN201810889278A CN108828652A CN 108828652 A CN108828652 A CN 108828652A CN 201810889278 A CN201810889278 A CN 201810889278A CN 108828652 A CN108828652 A CN 108828652A
- Authority
- CN
- China
- Prior art keywords
- protective device
- monitoring instrument
- radiation monitoring
- instrument protective
- lower shell
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention belongs to nuclear power station maintenance technique fields, and in particular to a kind of Radiation monitoring instrument protective device, including：Ring flange, cover board, wirerope, upper shell and lower shell, the T-shaped structure in the Radiation monitoring instrument protective device section；The ring flange is structure as a whole with upper shell upper end, and upper shell lower end and the welding of lower shell upper end, the ring flange upper surface is bolted with cover board；The lower shell bottom is enclosed construction.This hair buys that method by increasing polyethylene Radiation monitoring instrument protective device inside former guide pipe, detector can be isolated with seawater, make detector and its correlated parts from the corrosion of seawater, effectively reduce the risk that detector crashes into sea.
Description
Technical field
The invention belongs to nuclear power station maintenance technique fields, and in particular to a kind of Radiation monitoring instrument protective device and its installation
Method.
Background technique
Certain nuclear power station in order to seawater from real-time monitoring to environmental emission radioactive level, in essential service water technique system
Two immersion type liquid volume activity monitors are provided in seugh.The NaI detector of monitor is sealed in plastics waterproofing
In cover, detector and waterproof cover are mounted in probe guide duct by wirerope, and detector immerses in the seawater, are completed real-time
The radioactive activity of monitoring discharge seawater.
Since detector and its waterproof cover are directly immersed in the seawater, influenced by water flow, repeatedly occur detector and its
Waterproof cover is stuck at guide pipe horn mouth and cannot extract.In addition, probe guide duct regional area is because of corrosion-deformation, periodic check
, which there is detector, in Shi Duoci to be proposed out of guide pipe.After there is above situation, draining can only be entered from manhole by diver
Underdrain could take out detector.After the completion of verification, detector can not be put into guide pipe, and instrument is caused to lose normal monitoring function
Energy.
Therefore it needs to design a kind of nuclear power station essential service water process system discharge outlet radiation monitor in response to this
Table protection device for installing, for solving the disadvantage that the above-mentioned prior art, it is ensured that radiation detector energy normal table operation.
Summary of the invention
Object of the present invention is to provide a kind of Radiation monitoring instrument protective device in view of the above shortcomings of the prior art, for changing
The technical issues of kind radiation detector is isolated with seawater, eliminates influence of the water flow to detector.
The technical scheme is that：
A kind of Radiation monitoring instrument protective device, including：Ring flange, cover board, wirerope, upper shell and lower shell, it is described
The T-shaped structure in Radiation monitoring instrument protective device section；The ring flange is structure as a whole with upper shell upper end, upper shell lower end
It is welded with lower shell upper end, the ring flange upper surface is bolted with cover board；The lower shell bottom is enclosed construction.
Ring flange as described above and lid surface are equipped with bolt hole, the welding of the upper shell lower end and lower shell upper end
Point interior surface and external surfaces smooth are straight.
Lower shell bottom thickness as described above is greater than barrel surrounding thickness, and upper shell and lower shell are hollow structure.
Ring flange, cover board, upper shell and lower shell as described above use HDPE high-density polyethylene material, specified receiving pressure
Power is not less than 0.6Mpa, and operating temperature range is -15~+50 DEG C.
Lower shell bottom as described above is contacted with seugh bottom, and lower shell lower end length in reserve is the examination of 30cm
Test section.
Cover board lower surface as described above is connected with wirerope.
A kind of installation method of Radiation monitoring instrument protective device, includes the following steps：
Step 1：It is nested inside with Radiation monitoring instrument protective device in guide pipe；
Step 2：The lower shell bottom of Radiation monitoring instrument protective device is inserted into basin bottom, with seugh bottom 7
It is in close contact, Radiation monitoring instrument protective device top is fixed by ring flange；
Step 3：Wirerope is fixed on the cover board lower surface of Radiation monitoring instrument protective device, removes detector waterproof
Detector is suspended on inside Radiation monitoring instrument protective device using wirerope, is isolated with seawater by outer cover；Keep detector leaching
The depth for entering seawater is identical as original position, it is ensured that detector detection efficient meets nuclear power station to radioactive matter monitoring and control
It is strict with.
The invention has the advantages that：
(1) a kind of Radiation monitoring instrument protective device that the present invention designs, application field are nuclear power station essential service water work
Process system, by inside former guide pipe increase polyethylene Radiation monitoring instrument protective device method, can by detector with
Seawater isolation, makes detector and its correlated parts from the corrosion of seawater, effectively reduces the risk that detector crashes into sea.
(2) a kind of Radiation monitoring instrument protective device that the present invention designs can effectively avoid proposing detector process
In be likely to occur the case where being stuck at former guide pipe horn mouth, facilitate detector maintenance work, ensure that the stabilization of detector
Operation and detection efficient.
(3) a kind of Radiation monitoring instrument protective device that the present invention designs, is suspended on new guarantor for detector using wirerope
In protection unit, the depth for keeping detector to immerse seawater is identical as original position, to guarantee that detector detection efficient meets nuclear power station
Strict demand to radioactive matter monitoring and control.
(4) a kind of Radiation monitoring instrument protective device that the present invention designs, while sufficiently meeting design requirement, cost
Lower, structure is simple, installs on the spot simple and convenient.
(5) a kind of Radiation monitoring instrument protective device that the present invention designs, realizes to important station-service water conservancy project process system spoke
The protection of measuring instrument installation is penetrated, dedicated degree is high, currently without precedent, has very high promotional value in other nuclear power stations.
Detailed description of the invention
Fig. 1 is a kind of Radiation monitoring instrument protective device scheme of installation designed by the present invention；
Fig. 2 is a kind of Radiation monitoring instrument protective device sectional view designed by the present invention；
Fig. 3 is a kind of Radiation monitoring instrument protective device front view designed by the present invention；
Wherein, 1- bolt hole；2- ring flange；3- upper shell；4- pad；5- lower shell；6- guide pipe；7- seugh
Bottom；8- cover board；9- wirerope；10- detector.
Specific embodiment
The technology of the present invention is described further below：
The present invention is directed to nuclear power station scene essential service water process system Radiation monitoring instrument installation region environment particularity,
There is provided a kind of measuring instrument protection device for installing, it can be ensured that instrument avoids radioactive source from losing in the safety in seabed.Meanwhile side
Just measuring instrument maintenance work, guarantees the stable operation and detection efficient of detector, radiates to meet nuclear power station to discharge outlet
The strict demand of property matter monitoring and control.
As shown in Figures 1 to 3, a kind of Radiation monitoring instrument protective device, including：Ring flange 2, cover board 8, wirerope 9, upper cylinder
Body 3 and lower shell 5, the T-shaped structure in the Radiation monitoring instrument protective device section；The ring flange 2 is with 3 upper end of upper shell
Integral structure, 3 lower end of upper shell and the welding of 5 upper end of lower shell, 2 upper surface of ring flange is bolted with cover board 8；The lower shell
5 bottoms are enclosed construction.
The ring flange 2 and 8 surface of cover board are equipped with bolt hole 1, the weldering of 3 lower end of upper shell and 5 upper end of lower shell
4 interior surface of contact and external surfaces smooth are straight.
5 bottom thickness of lower shell is greater than barrel surrounding thickness, it is therefore intended that in the immersed depth for guaranteeing lower shell 5
When, it avoids 5 bottom of lower shell and 7 serious wear of seugh bottom causes seawater into lower shell 5；Upper shell 3 and lower shell 5
For hollow structure.
The ring flange 2, cover board 8, upper shell 3 and lower shell 5 use HDPE high-density polyethylene material, with higher
Intensity and toughness seawater corrosion resistance, specified receiving pressure are not less than 0.6Mpa, and operating temperature range is -15~+50 DEG C.
5 bottom of lower shell is contacted with seugh bottom 7；
Test pressure is not less than 0.3MPa when the being sealed property of Radiation monitoring instrument protective device is tested, after 3 hours
Pressure remains unchanged, No leakage is qualification.
When each Radiation monitoring instrument protective device is processed, the 5 lower end length in reserve of lower shell is the test section of 30cm.
8 lower surface of cover board is connected with wirerope 9.
A kind of installation method of Radiation monitoring instrument protective device, includes the following steps：
Step 1：It is nested inside with Radiation monitoring instrument protective device in guide pipe 6；
Step 2：5 bottom of lower shell of Radiation monitoring instrument protective device is inserted into basin bottom, with seugh bottom
7 are in close contact, and Radiation monitoring instrument protective device top is fixed by ring flange 2；
Step 3：Wirerope 9 is fixed on 8 lower surface of cover board of Radiation monitoring instrument protective device, removes detector 10
Detector 10 is suspended on inside Radiation monitoring instrument protective device using wirerope 9, is isolated with seawater by waterproof outer cover；It keeps
The depth that detector 10 immerses seawater is identical as original position, it is ensured that 10 detection efficient of detector meets nuclear power station to radioactive substance
The strict demand of monitoring and control.
The present invention is explained in detail above in conjunction with embodiment, but the present invention is not limited to above-described embodiments, at this
Field those of ordinary skill within the scope of knowledge, can also make various changes without departing from the purpose of the present invention
Change.The content being not described in detail in the present invention can use the prior art.
Claims (7)
1. a kind of Radiation monitoring instrument protective device, it is characterised in that：Including：Ring flange (2), cover board (8), wirerope (9), on
Cylinder (3) and lower shell (5), the T-shaped structure in the Radiation monitoring instrument protective device section；The ring flange (2) and upper cylinder
Body (3) upper end is structure as a whole, and upper shell (3) lower end and the welding of lower shell (5) upper end, ring flange (2) upper surface is spirally connected
There are cover board (8)；Lower shell (5) bottom is enclosed construction.
2. a kind of Radiation monitoring instrument protective device as described in claim 1, it is characterised in that：The ring flange (2) and lid
Plate (8) surface is equipped with bolt hole (1), pad (4) interior surface of upper shell (3) lower end and lower shell (5) upper end
It is straight with external surfaces smooth.
3. a kind of Radiation monitoring instrument protective device as claimed in claim 2, it is characterised in that：Lower shell (5) bottom
Thickness is greater than barrel surrounding thickness, and upper shell (3) and lower shell (5) are hollow structure.
4. a kind of Radiation monitoring instrument protective device as claimed in claim 3, it is characterised in that：The ring flange (2), cover board
(8), upper shell (3) and lower shell (5) use HDPE high-density polyethylene material, and specified receiving pressure is not less than 0.6Mpa, work
Making temperature range is -15~+50 DEG C.
5. a kind of Radiation monitoring instrument protective device as claimed in claim 4, it is characterised in that：Lower shell (5) bottom
It is contacted with seugh bottom (7), lower shell (5) the lower end length in reserve is the test section of 30cm.
6. a kind of Radiation monitoring instrument protective device as described in claim 1, it is characterised in that：Cover board (8) lower surface
It is connected with wirerope (9).
7. a kind of installation method of Radiation monitoring instrument protective device, it is characterised in that include the following steps：
Step 1：It is nested inside with Radiation monitoring instrument protective device in guide pipe (6)；
Step 2：Lower shell (5) bottom of Radiation monitoring instrument protective device is inserted into basin bottom, with seugh bottom 7
It is in close contact, Radiation monitoring instrument protective device top is fixed by ring flange 2；
Step 3：Wirerope (9) is fixed on cover board (8) lower surface of Radiation monitoring instrument protective device, removes detector
(10) detector (10) is suspended on inside Radiation monitoring instrument protective device by waterproof outer cover using wirerope (9), with seawater every
From；The depth for keeping detector (10) to immerse seawater is identical as original position, it is ensured that detector (10) detection efficient meets nuclear power station
Strict demand to radioactive matter monitoring and control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889278.7A CN108828652A (en) | 2018-08-07 | 2018-08-07 | A kind of Radiation monitoring instrument protective device and its installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889278.7A CN108828652A (en) | 2018-08-07 | 2018-08-07 | A kind of Radiation monitoring instrument protective device and its installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108828652A true CN108828652A (en) | 2018-11-16 |
Family
ID=64152670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810889278.7A Pending CN108828652A (en) | 2018-08-07 | 2018-08-07 | A kind of Radiation monitoring instrument protective device and its installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108828652A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2065179C1 (en) * | 1991-12-20 | 1996-08-10 | Всероссийский научно-исследовательский институт экспериментальной физики | SELF-QUENCHING GAS-DISCHARGE DETECTOR OF β AND g RADIATION |
| CN101738627A (en) * | 2008-11-18 | 2010-06-16 | 同方威视技术股份有限公司 | Radioactive substance monitoring system |
| CN102033240A (en) * | 2009-09-30 | 2011-04-27 | 长春博信光电子有限公司 | Real-time and on-spot water trace radioactive substance and radiation remote wireless monitoring system |
| CN102109472A (en) * | 2009-12-24 | 2011-06-29 | 同方威视技术股份有限公司 | Portable radioactive substance monitoring device |
| JP2011191090A (en) * | 2010-03-12 | 2011-09-29 | Chugoku Electric Power Co Inc:The | Underwater radiation measuring device |
| CN103366843A (en) * | 2013-07-22 | 2013-10-23 | 中国核动力研究设计院 | Guiding structure of straight inserted detector for nuclear reactor |
| CN204790013U (en) * | 2015-07-08 | 2015-11-18 | 江苏核电有限公司 | Airtight type automatic drainage device of radiation monitoring passageway |
| CN105372694A (en) * | 2015-12-10 | 2016-03-02 | 国家海洋局第三海洋研究所 | Water environment radionuclide activity profile measurement system |
| CN205246888U (en) * | 2015-12-10 | 2016-05-18 | 国家海洋局第三海洋研究所 | Water environment radionuclide activity section measurement system |
| US20170343682A1 (en) * | 2016-05-25 | 2017-11-30 | Schlumberger Technology Corporation | System and methodology utilizing a radiation detector |
| CN208506262U (en) * | 2018-08-07 | 2019-02-15 | 江苏核电有限公司 | A kind of Radiation monitoring instrument protective device |
-
2018
- 2018-08-07 CN CN201810889278.7A patent/CN108828652A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2065179C1 (en) * | 1991-12-20 | 1996-08-10 | Всероссийский научно-исследовательский институт экспериментальной физики | SELF-QUENCHING GAS-DISCHARGE DETECTOR OF β AND g RADIATION |
| CN101738627A (en) * | 2008-11-18 | 2010-06-16 | 同方威视技术股份有限公司 | Radioactive substance monitoring system |
| CN102033240A (en) * | 2009-09-30 | 2011-04-27 | 长春博信光电子有限公司 | Real-time and on-spot water trace radioactive substance and radiation remote wireless monitoring system |
| CN102109472A (en) * | 2009-12-24 | 2011-06-29 | 同方威视技术股份有限公司 | Portable radioactive substance monitoring device |
| JP2011191090A (en) * | 2010-03-12 | 2011-09-29 | Chugoku Electric Power Co Inc:The | Underwater radiation measuring device |
| CN103366843A (en) * | 2013-07-22 | 2013-10-23 | 中国核动力研究设计院 | Guiding structure of straight inserted detector for nuclear reactor |
| CN204790013U (en) * | 2015-07-08 | 2015-11-18 | 江苏核电有限公司 | Airtight type automatic drainage device of radiation monitoring passageway |
| CN105372694A (en) * | 2015-12-10 | 2016-03-02 | 国家海洋局第三海洋研究所 | Water environment radionuclide activity profile measurement system |
| CN205246888U (en) * | 2015-12-10 | 2016-05-18 | 国家海洋局第三海洋研究所 | Water environment radionuclide activity section measurement system |
| US20170343682A1 (en) * | 2016-05-25 | 2017-11-30 | Schlumberger Technology Corporation | System and methodology utilizing a radiation detector |
| CN208506262U (en) * | 2018-08-07 | 2019-02-15 | 江苏核电有限公司 | A kind of Radiation monitoring instrument protective device |
Non-Patent Citations (1)
| Title |
|---|
| 潘建明;杨俊毅;刘俊峰;: "基于NaI(TI)晶体的海水核辐射原位探测器可行性研究" * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9053828B2 (en) | Nuclear reactor bottom-mounted instrumentation nozzle repair method | |
| CN208506262U (en) | A kind of Radiation monitoring instrument protective device | |
| CN206072777U (en) | A kind of chemical pipeline with protection sleeve pipe | |
| KR101993514B1 (en) | Apparatus for detecting fluid leak | |
| KR200486933Y1 (en) | Container structure for protective potential test box | |
| CN108828652A (en) | A kind of Radiation monitoring instrument protective device and its installation method | |
| CN102072755B (en) | electrode liquid level sensor | |
| ATE515775T1 (en) | PRESSURE HOLDER OF A NUCLEAR POWER PLANT WITH A PRESSURIZED WATER REACTOR | |
| CN104103326B (en) | Device used for sealing detection on containment outer isolation valve | |
| CN207591419U (en) | A kind of anti-corrosion filter unit | |
| CN205978905U (en) | Grease proofing leakage device of oil pipe flange and oil pipe connection structure | |
| CN207575938U (en) | A kind of anti-corrosion filter unit peculiar to vessel | |
| CN201407364Y (en) | Nuclear safety-grade electric cut-off valve | |
| CN208701216U (en) | A kind of galvanic anode protection protection element | |
| CN206990049U (en) | A kind of heat exchange station water leakage alarm probe containment vessel | |
| CN107648924A (en) | A kind of anti-corrosion filter unit | |
| CN204594735U (en) | A kind of solution sampling device | |
| CN205037064U (en) | High pressure acetylene storage tank | |
| CN203487551U (en) | Pipeline inspection well | |
| CN219641935U (en) | Water body radiation monitoring equipment for radiation environment | |
| CN218333145U (en) | Take seal structure's demineralized water tank of nuclear power plant | |
| CN210442237U (en) | Waterproof detection device for building material detection | |
| CN204284902U (en) | Natural gas steam trap | |
| CN202597998U (en) | Flange disc type connector | |
| CN206973255U (en) | Water tank air hose steam trap peculiar to vessel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |