CN106404311A - Spent fuel assembly damage detection apparatus - Google Patents
Spent fuel assembly damage detection apparatus Download PDFInfo
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- CN106404311A CN106404311A CN201510459849.XA CN201510459849A CN106404311A CN 106404311 A CN106404311 A CN 106404311A CN 201510459849 A CN201510459849 A CN 201510459849A CN 106404311 A CN106404311 A CN 106404311A
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- cooler
- interface
- fuel assembly
- vent line
- damage detection
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Abstract
The invention discloses a spent fuel assembly damage detection apparatus. An employed transferring container is provided with a release interface and a recovery interface, the detection apparatus comprises a cooler, an inert gas detector and a ventilation pipeline, the ventilation pipeline is connected with the release interface and the recovery interface, the part of the ventilation pipeline, close to the release interface, is contained in the cooler, and the inert gas detector is arranged on the ventilation pipeline and located between the cooler and the recovery interface. According to the apparatus, online real-time detection can be realized, and possible leakage of radioactive gas can be avoided through recovery of the ventilation pipeline; the cooler can prevent the instrument from being damaged by high-temperature gas; when the radioactive gas is detected, the gas can be collected by employing a steel cylinder in order to analyze content and determine the number of damaged assemblies; the part of the ventilation pipeline, located in the cooler, is a coil pipe so that rapid cooling can be facilitated; and the ventilation pipeline is further additionally provided with a sampling fan so that circulation can be guaranteed.
Description
Technical field
A kind of the present invention relates to Nuclear Safety field, more particularly, it relates to irradiated fuel assembly damage testing dress
Put.
Background technology
After spent nuclear fuel in nuclear power plant loads transfer container tank, fuel container carries out draining, fills helium, waits temperature
It is transported to storage spentnuclear fuel place after degree balance again and carry out discharging.If fuel container is in transhipment, spentnuclear fuel
Assembly breakage will produce a large amount of high radioactivity gases, for ensureing the peace of fuel container operating personnel and discharging personnel
Entirely, need to carry out radiological measuring to the gas in fuel container before unloading spentnuclear fuel, and in prior art
The device specially this not measured.
Content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, provides a kind of weary combustion
Material assembly damage detection device.
The technical solution adopted for the present invention to solve the technical problems is：Construct a kind of damaged inspection of irradiated fuel assembly
Survey device, for the irradiated fuel assembly in spentnuclear fuel transfer container, whether breakage carries out real-time monitoring, described
Transfer container is provided with output interface and reclaims interface, and described detection means includes：Cooler, inert gas
Detector and vent line；Described vent line connects described output interface and reclaims interface, described ventilation
Pipeline is placed in described cooler near the part of described output interface, described inert gas detector setting
And positioned at described cooler and reclaim between interface on described vent line.
In irradiated fuel assembly damage detection device of the present invention, described device also includes being arranged at described
Blower fan on vent line, described blower fan is located between described cooler and inert gas detector.
In irradiated fuel assembly damage detection device of the present invention, described vent line is additionally provided with one
Individual three-dimensional valve, described vent line includes multiple unidirectional pipelines, and the input of this three-dimensional valve is single via one
Connect described blower fan to pipeline, the first output end of this three-dimensional valve connects via described in a unidirectional pipeline connection
The input of inert gas detector, the second output end of this three-dimensional valve connect and connect via a unidirectional pipeline
Unidirectional pipeline also warp between described recovery interface, and the second output end of described three-dimensional valve and recovery interface
It is connected with the output end of described inert gas detector by a unidirectional pipeline.
In irradiated fuel assembly damage detection device of the present invention, described detection means also includes flow
Meter, the unidirectional pipeline between this flowmeter and three-dimensional valve to described blower fan is connected.
In irradiated fuel assembly damage detection device of the present invention, described detection means also includes temperature
Meter, the unidirectional pipeline between this thermometer and three-dimensional valve to described blower fan is connected.
In irradiated fuel assembly damage detection device of the present invention, described detection means also includes being arranged at
Sampling steel cylinder on described vent line, described sampling steel cylinder is located at described inert gas detector and recovery connects
Between mouthful.
In irradiated fuel assembly damage detection device of the present invention, described vent line is located at described cooling
Part in device is coil pipe.
In irradiated fuel assembly damage detection device of the present invention, described cooler is provided with for surveying
Measure the temperature monitor of temperature in described cooler, the low-temperature receiver in described cooler is trash ice, described cooler
Bottom sidewall is connected with the draining valve for controlling the aqueous water in described cooler to discharge.
In irradiated fuel assembly damage detection device of the present invention, described device has the bottom installing wheel
Disk.
Implement the irradiated fuel assembly damage detection device of the present invention, have the advantages that：The present invention is permissible
Realize the detection to radgas using inert gas detector, such that it is able to judge whether fuel occurs
Assembly is damaged, and due to being to be sampled from transfer container using vent line, and the gas after testting can pass through
Vent line is recycled in fortune container, such that it is able to realize on-line real-time measuremen, and reclaims that can avoid can
The radgas leakage of energy；Cooler avoids high-temperature gas to damage instrument；
In addition, when detecting radgas, be also with steel cylinder collect gas so as analysis content and then
Judge that how many assembly is damaged；Further, the part that vent line is located in described cooler is coil pipe,
Can be in order to fast cooling；Further, sampling loop installs sampling blower fan additional, make loop possess stream
The general character, in addition, setting thermometer and flowmeter are to ensure the temperature of sample flow and sampling requirement, using
In journey, parameter can directly read, user-friendly.
Brief description
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of irradiated fuel assembly damage detection device of the present invention.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing is detailed
Describe the specific embodiment of the bright present invention in detail.
The present invention mainly sets up gas on-line measurement and the sampling loop of closed loop, by on-line measurement and sampling
The method of analysis carries out spentnuclear fuel and whether there is damaged evaluation, for discharging operations provide personal security guarantee according to
According to corresponding technical support.
With reference to Fig. 1, it is the structural representation of irradiated fuel assembly damage detection device of the present invention.
The irradiated fuel assembly damage detection device of the present invention, for the spentnuclear fuel in spentnuclear fuel transfer container 1
Whether breakage carries out real-time monitoring to assembly.Described transfer container 1 is provided with output interface 11 and reclaims interface
12, in spentnuclear fuel transfer container 1, gas measurement device includes：Cooler 2, inert gas detector 4,
Vent line；Described vent line connects described output interface 11 and reclaims interface 12, described vent line
Part near described output interface 11 is placed in described cooler 2, described inert gas detector 4
It is arranged on described vent line and is located at described cooler 2 and reclaim between interface 12.
Gas in transfer container 1 can reclaim through vent line, the indifferent gas in flowing through vent line
During body detector 4, inert gas detector 4 can detect half-life longer Kr-85 gas, if gas
In there is Kr-85 gas, then explanation fuel assembly occur damaged.This detection method of the present invention can profit
Realize the detection to radgas with inert gas detector 4, such that it is able to judge whether fuel occurs
Assembly is damaged, and due to being to be sampled from transfer container 1 using vent line, and the gas after testting can lead to
Cross vent line to be recycled in fortune container, such that it is able to realize on-line real-time measuremen, and reclaim and can avoid
Possible radgas leakage.
Preferably, the sampling steel cylinder 5 that is arranged on described vent line, described sampling are also included in the present invention
Steel cylinder 5 is located at described inert gas detector 4 and reclaims between interface 12.Detecting radgas
When, it is also with sampling steel cylinder 5 and collects gas, how much take laboratory concrete analysis content, and then judge
How many assembly is damaged.
Because in fuel container, gas is high-temperature gas, for avoiding high-temperature gas to damage instrument and possible
High radioactivity particulate enters sampling steel cylinder 5 and inert gas detector 4 it is necessary to first pass through cooler
2 pairs of gases are lowered the temperature.For this reason, being provided with described cooler 2 for measuring described cooler 2 interior temperature
The temperature monitor 22 of degree, the low-temperature receiver in described cooler 2 is trash ice, described cooler 2 bottom sidewall
It is connected with the draining valve 21 for controlling the water in described cooler 2 to discharge, near the ventilation of cooler 2
Thermometer 7 is also associated with pipeline.
Cooler 2 takes trash ice as low-temperature receiver, provides stable low-temperature receiver, if temperature is too high, the row of opening
Water valve 21 is discharged the aqueous water melting and is added trash ice toward in cooler 2, makes to protect all the time in cooler 2
Hold 0 DEG C and following it is ensured that the temperature of gas sampled is down within the scope of required.And, made using trash ice
For low-temperature receiver, this cooler 2 is no longer necessary to the power set of outside as low-temperature receiver, thus reducing equipment volume,
Decrease the corollary apparatus of cooler 2.
Preferably, be vent line in cooler 2 be coil pipe, coil pipe increased the length contacting with low-temperature receiver,
And then it is easy to fast cooling.
It is further preferred that installing sampling blower fan 3 in vent line additional, loop is made to possess circulation.Theoretical
The position of fan 3 is not limited, as long as air-flow one-way flow can be driven, in preferred embodiment,
Preferably, described blower fan 3 is located between described cooler 2 and inert gas detector 4.
It is further preferred that after system connects, can be that first whether test vent line is unobstructed before measuring,
Determine and carry out gas detection, sampling again after stablizing.Therefore, described vent line is additionally provided with a three-dimensional
Valve 8, described vent line includes multiple unidirectional pipelines, from figure 1 it will be seen that coil pipe is defeated with blower fan 3
Enter end to connect, blower fan 3 output end connects the input of this three-dimensional valve 8 via a unidirectional pipeline, and this three
Connect the input connecting described inert gas detector 4 via a unidirectional pipeline to the first output end of valve 8
End, the second output end of this three-dimensional valve 8 connects and connects described recovery interface 12 via a unidirectional pipeline,
And the second output end of described three-dimensional valve 8 and the unidirectional pipeline that reclaims between interface 12 also unidirectional via one
Pipeline is connected with the output end of described inert gas detector 4.
Preferably, a flow is connected on the unidirectional pipeline between the input of blower fan 3 and three-dimensional valve 8
Meter 6, above-mentioned thermometer 7 is also disposed on this partially unidirectional pipeline, to know after gas flow rate and cooling
Temperature, during use, parameter can directly read, user-friendly.
Wherein, sampling steel cylinder 5 is arranged at the unidirectional pipeline that the output end of described inert gas detector 4 connects
In, and close one end that it is converged with three-dimensional valve 8 of this unidirectional pipeline is provided with valve 9.
After system connects, first three-dimensional valve 8 is got to the second output end, close the first output end, with
Whether the valve 9 that sampling steel cylinder 5 connects is closed, unobstructed to test vent line, treats that vent line is unobstructed,
The measurement index of flowmeter 6 and thermometer 7 is qualified, then three-dimensional valve 8 is got to the first output end, closes
Second output end, the valve 9 being connected with sampling steel cylinder 5 is opened, and starts gas detection.If inert gas
Detector 4 detects has Kr-85 gas in gas, then close the valve 9 being connected with sampling steel cylinder 5,
Collect gas.
Preferably, in the present invention, the interface with 3 road seals is adopted for each interface, using wall thickness is
The sebific duct of 3mm is fixed plus pipe clamp, carries out gas test leak detection it is ensured that will not leak after fixing.
It is further preferred that the irradiated fuel assembly damage detection device of the present invention can be designed to dolly, will be
Above-mentioned components and parts gather together, and apparatus structure is compact, small volume, and wheel is installed on the chassis of dolly.
Above in conjunction with accompanying drawing, embodiments of the invention are described, but the invention is not limited in above-mentioned
Specific embodiment, above-mentioned specific embodiment is only schematically, rather than restricted, this
The those of ordinary skill in field, under the enlightenment of the present invention, is being protected without departing from present inventive concept and claim
Under the ambit of shield, also can make a lot of forms, these belong within the protection of the present invention.
Claims (9)
1. a kind of irradiated fuel assembly damage detection device, for the weary combustion in spentnuclear fuel transfer container (1)
Whether breakage carries out real-time monitoring it is characterised in that described transfer container (1) is provided with output to material assembly
Interface (11) and recovery interface (12), described detection means includes：Cooler (2), indifferent gas health check-up
Survey instrument (4) and vent line；Described vent line connects described output interface (11) and reclaims interface
(12), described vent line is placed in described cooler (2) near the part of described output interface (11)
Interior, described inert gas detector (4) is arranged on described vent line and is located at described cooler (2)
And reclaim between interface (12).
2. irradiated fuel assembly damage detection device according to claim 1 is it is characterised in that described
Device also includes the blower fan (3) being arranged on described vent line, and described blower fan (3) is located at described cooling
Between device (2) and inert gas detector (4).
3. irradiated fuel assembly damage detection device according to claim 2 is it is characterised in that described
One three-dimensional valve (8) is additionally provided with vent line, described vent line includes multiple unidirectional pipelines, should
The input of three-dimensional valve (8) connects described blower fan (3), this three-dimensional valve (8) via a unidirectional pipeline
The first output end connect via a unidirectional pipeline connect described inert gas detector (4) input,
Second output end of this three-dimensional valve (8) connects and connects described recovery interface (12) via a unidirectional pipeline,
And the second output end of described three-dimensional valve (8) and reclaim unidirectional pipeline between interface (12) also via
One unidirectional pipeline is connected with the output end of described inert gas detector (4).
4. irradiated fuel assembly damage detection device according to claim 3 is it is characterised in that described
Detection means also includes flowmeter (6), this flowmeter (6) and three-dimensional valve (8) to described blower fan (3)
Between unidirectional pipeline connect.
5. irradiated fuel assembly damage detection device according to claim 3 is it is characterised in that described
Detection means also includes thermometer (7), this thermometer (7) and three-dimensional valve (8) to described blower fan (3)
Between unidirectional pipeline connect.
6. irradiated fuel assembly damage detection device according to claim 1 is it is characterised in that described
Detection means also includes the sampling steel cylinder (5) being arranged on described vent line, described sampling steel cylinder (5)
Between described inert gas detector (4) and recovery interface (12).
7. irradiated fuel assembly damage detection device according to claim 1 is it is characterised in that described
The part that vent line is located in described cooler (2) is coil pipe.
8. irradiated fuel assembly damage detection device according to claim 1 is it is characterised in that described
Temperature monitor (22) for measuring the interior temperature of described cooler (2) is provided with cooler (2),
Low-temperature receiver in described cooler (2) is trash ice, and described cooler (2) bottom sidewall is connected with for controlling
The draining valve (21) of the aqueous water discharge in described cooler (2).
9. irradiated fuel assembly damage detection device according to claim 1 is it is characterised in that described
Device has the chassis installing wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510459849.XA CN106404311A (en) | 2015-07-30 | 2015-07-30 | Spent fuel assembly damage detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510459849.XA CN106404311A (en) | 2015-07-30 | 2015-07-30 | Spent fuel assembly damage detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106404311A true CN106404311A (en) | 2017-02-15 |
Family
ID=58009339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510459849.XA Pending CN106404311A (en) | 2015-07-30 | 2015-07-30 | Spent fuel assembly damage detection apparatus |
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| CN (1) | CN106404311A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063101A (en) * | 2017-05-31 | 2017-08-18 | 中广核研究院有限公司 | Irradiated fuel assembly measurement apparatus and measuring method |
| CN108061623A (en) * | 2017-12-06 | 2018-05-22 | 中船黄埔文冲船舶有限公司 | A kind of air pipeline leak testing process |
| CN109599196A (en) * | 2018-12-19 | 2019-04-09 | 西安交通大学 | Fission gas leakage measuring instrumentation experimental provision and method after a kind of fuel element failure |
| CN109696279A (en) * | 2018-12-06 | 2019-04-30 | 王伟波 | A kind of gas leak detection device of heat exchanger ejection coil pipe |
| CN111145923A (en) * | 2019-11-26 | 2020-05-12 | 中广核工程有限公司 | Method for detecting damage of spent fuel assembly of nuclear power station |
| CN114112226A (en) * | 2021-12-08 | 2022-03-01 | 中国原子能科学研究院 | Device and method for detecting damage of spent fuel element |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107063101A (en) * | 2017-05-31 | 2017-08-18 | 中广核研究院有限公司 | Irradiated fuel assembly measurement apparatus and measuring method |
| CN108061623A (en) * | 2017-12-06 | 2018-05-22 | 中船黄埔文冲船舶有限公司 | A kind of air pipeline leak testing process |
| CN109696279A (en) * | 2018-12-06 | 2019-04-30 | 王伟波 | A kind of gas leak detection device of heat exchanger ejection coil pipe |
| CN109599196A (en) * | 2018-12-19 | 2019-04-09 | 西安交通大学 | Fission gas leakage measuring instrumentation experimental provision and method after a kind of fuel element failure |
| CN111145923A (en) * | 2019-11-26 | 2020-05-12 | 中广核工程有限公司 | Method for detecting damage of spent fuel assembly of nuclear power station |
| CN111145923B (en) * | 2019-11-26 | 2022-03-15 | 中广核工程有限公司 | Method for detecting damage of spent fuel assembly of nuclear power station |
| CN114112226A (en) * | 2021-12-08 | 2022-03-01 | 中国原子能科学研究院 | Device and method for detecting damage of spent fuel element |
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Application publication date: 20170215 |
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