CN203216683U - Nuclear power station spent fuel pool skimming apparatus floating drum anti-seepage test device - Google Patents
Nuclear power station spent fuel pool skimming apparatus floating drum anti-seepage test device Download PDFInfo
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- CN203216683U CN203216683U CN 201320163705 CN201320163705U CN203216683U CN 203216683 U CN203216683 U CN 203216683U CN 201320163705 CN201320163705 CN 201320163705 CN 201320163705 U CN201320163705 U CN 201320163705U CN 203216683 U CN203216683 U CN 203216683U
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- floating drum
- power station
- nuclear power
- test device
- spent fuel
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Abstract
The utility model relates to a nuclear power station spent fuel pool skimming apparatus floating drum anti-seepage test device, and belongs to the technical field of detection equipment. The nuclear power station spent fuel pool skimming apparatus floating drum anti-seepage test device comprises a water tank for disposing a floating drum, and a joint, a stop valve and a gas source sequentially communicated through conduits, and the joint is connected to the outer wall of the floating drum and is communicated with the inner cavity of the floating drum. The nuclear power station spent fuel pool skimming apparatus floating drum anti-seepage test device has the advantages of simple operation, visual inspection and the like.
Description
Technical field
The utility model relates to a kind of Nuclear Power Station's Exhausted Fuels pond float skimming device floating drum antiseep test unit, belongs to the checkout equipment technical field.
Background technology
In the nuclear power station of gigawatts such as CPR1000 and M310, for suspension in the water of removing the spentnuclear fuel pond, keep visibility good in the water and reduce radioactive level, adopted the float skimming device that is fixed on the pool wall, the core component of this device is the hollow pontoon that swims in the pond, this floating drum heavily keep constant buoyancy in the pond, the upper surface of floating drum remains on the position near the water surface when the pond middle water level changes, can effectively guide in the water flow of suspension to the scrubbing mouth in spentnuclear fuel pond, and prevent that the disturbance because of the water surface from influencing the visibility of Chi Shui.
The floating drum of float skimming device adopts bending and welding technology to make by stainless sheet steel, and because swimming in the water surface for a long time, if there is not excellent sealing performance, its cavity may seep water and cause the floating drum submerged, loses the function of suspension in the guiding spentnuclear fuel pond.
In order to ensure the safe and stable operation of nuclear power station, in the manufacturing of float skimming device, must carry out strict antiseep leakage test to each floating drum.At present, to the various stainless steel components in the nuclear island of million kilowatt nuclear power station, domesticly just begin production domesticization and made, also the floating drum of float skimming device has not been carried out the example of antiseep leakage test.
The utility model content
The technical problems to be solved in the utility model is, proposes a kind of easy and simple to handlely, checks Nuclear Power Station's Exhausted Fuels pond float skimming device floating drum antiseep test unit intuitively.
The utility model is that the technical scheme that solves the problems of the technologies described above proposition is: a kind of Nuclear Power Station's Exhausted Fuels pond float skimming device floating drum antiseep test unit, comprise that joint is connected in the floating drum outer wall and communicates with the inner chamber of floating drum for tank and the joint that is communicated with successively by conduit, stop valve and the source of the gas of placing floating drum.
Improvement of the technical scheme is: also be in series with pressure regulator valve and threeway on the conduit between source of the gas and the stop valve, another port of threeway is equipped with tensimeter.
Further improvement in the technical proposal is: conduit is rubber hose or steel pipe.
Nuclear Power Station's Exhausted Fuels of the present utility model pond float skimming device floating drum antiseep test unit has following beneficial effect:
1, easy and simple to handle, check intuitively, the leakage point that can 100% floating drum that detects float skimming device may exist comprises the floating drum leakage point that may cause in the weld seam of part assembling welding and other process operation.Can effectively prevent floating drum to lose its function because leaking infiltration.
2, can monitor in real time and trace is regulated the pressure of test unit by pressure regulator valve and tensimeter, can prevent from damaging because test pressure is too high floating drum.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the utility model embodiment one.
Embodiment
Embodiment one
The Nuclear Power Station's Exhausted Fuels pond float skimming device floating drum antiseep test unit of present embodiment as shown in Figure 1, comprise for the tank 1 of placement floating drum 9 and joint 8, stop valve 7 and the source of the gas 2 that is communicated with successively by conduit 3, joint 8 is connected in floating drum 9 outer walls and communicates with the inner chamber of floating drum 9, tank 1 has enough volumes, its length, width and height dimension can guarantee in the convenient water that immerses tank freely of floating drum 9 and can overturn and observe bubble that source of the gas 2 can adopt air compressor machine or pneumatic accumulator, nitrogen cylinder etc.Excessive and damage floating drum 9 for fear of the pressure of source of the gas 2, on the conduit 3 between source of the gas 2 and the stop valve 7, also be in series with pressure regulator valve 4 and threeway 5, another port of threeway 5 is equipped with tensimeter 6, the operator observes tensimeter 6 in operation pressure regulator valve 4 reading with the pressure that guarantees the whole test pipeline in safe range, above-mentioned conduit 3 can adopt rubber hose or steel pipe, for example between stop valve 7, threeway 5 and pressure regulator valve 4 because close together, each parts does not need movable relatively, and the conduit 3 of its connection can adopt steel pipe; And source of the gas 2 may move before and after test with floating drum 9, and the conduit 3 of its connection just adopts rubber hose.
During use, the Nuclear Power Station's Exhausted Fuels pond float skimming device floating drum antiseep test unit operation steps of present embodiment is as follows:
A. preliminary work before testing
1) the boring (diameter is not more than 2mm) of an end face of floating drum 9 and with joint 8 welding, guarantee that the commissure do not have leakage.
2) conduit 3, joint 8, stop valve 7, threeway 5, tensimeter 6, pressure regulator valve 4 and source of the gas 2 are connected successively.
3) quality of connection of each element in the check test pipeline guarantees that interface does not have leakage.
4) in tank 1, inject the satisfied clear water that floods floating drum 9.
5) floating drum 9 is put into tank 1.
B. antiseep leakage test
1) closes stop valve 7 and pressure regulator valve 4.
2) open source of the gas 2, inflate to pipeline.
3) slowly open pressure regulator valve 4, observe tensimeter 6 up to the test pressure 0.03MPa that shows regulation.
4) open stop valve 7, to floating drum 9 inflations, this moment, the force value of tensimeter 6 demonstrations can descend, but just began subsequently to rise.Observe tensimeter 6, when showing that pressure reaches 0.03MPa, close stop valve 7.
5) pin floating drum 9, guarantee all to immerse in the clear water, observation has or not bubble.Observing time is more than 30 minutes.
6) if bubble occurs, the floating drum 9 that then in clear water, overturns, the position of searching the bubble of emerging is leakage point.
C. product airtight quality evaluation
1) in 30 minutes, to observe and be immersed in floating drum 9 in the clear water, bubble does not appear, and then product is qualified.
2) if bubble occurs, then product is defective, need carry out repair welding to the leakage point on the floating drum 9, carries out above-mentioned test again.
D. to the subsequent processes of specification product
1) adopts grinding wheel grinding weld seam, take off joint 8 from floating drum 9.
2) adopt welding method shutoff aperture.
3) weld seam to the aperture place carries out vacuum leak inspection and liquid penetrant inspection, guarantees that the shutoff weld seam at aperture place does not have leakage.
The above only is preferred embodiment of the present utility model, as long as adopt the technical solution of the utility model, perhaps modification or the equivalent variations made based on conventional means on it of those skilled in the art all drops in the protection domain of the utility model requirement.
Claims (3)
1. Nuclear Power Station's Exhausted Fuels pond float skimming device floating drum antiseep test unit, it is characterized in that comprising: be used for placing tank and the joint that is communicated with successively by conduit, stop valve and the source of the gas of described floating drum, described joint is connected in the floating drum outer wall and communicates with the inner chamber of floating drum.
2. Nuclear Power Station's Exhausted Fuels according to claim 1 pond float skimming device floating drum antiseep test unit, it is characterized in that: also be in series with pressure regulator valve and threeway on the conduit between described source of the gas and the stop valve, another port of described threeway is equipped with tensimeter.
3. Nuclear Power Station's Exhausted Fuels according to claim 1 and 2 pond float skimming device floating drum antiseep test unit, it is characterized in that: described conduit is rubber hose or steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320163705 CN203216683U (en) | 2013-04-03 | 2013-04-03 | Nuclear power station spent fuel pool skimming apparatus floating drum anti-seepage test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320163705 CN203216683U (en) | 2013-04-03 | 2013-04-03 | Nuclear power station spent fuel pool skimming apparatus floating drum anti-seepage test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203216683U true CN203216683U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320163705 Expired - Fee Related CN203216683U (en) | 2013-04-03 | 2013-04-03 | Nuclear power station spent fuel pool skimming apparatus floating drum anti-seepage test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203216683U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989010A (en) * | 2017-11-14 | 2018-05-04 | 中国核电工程有限公司 | A kind of Spent fuel pit movable type float skimming device |
| CN108267279A (en) * | 2016-12-30 | 2018-07-10 | 天津市赫恩思体育用品有限公司 | A kind of spherical shape liner air-tightness detection device |
-
2013
- 2013-04-03 CN CN 201320163705 patent/CN203216683U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267279A (en) * | 2016-12-30 | 2018-07-10 | 天津市赫恩思体育用品有限公司 | A kind of spherical shape liner air-tightness detection device |
| CN107989010A (en) * | 2017-11-14 | 2018-05-04 | 中国核电工程有限公司 | A kind of Spent fuel pit movable type float skimming device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |