CN203731996U - Underwater up-to-down gap measurement device for reactor internal - Google Patents
Underwater up-to-down gap measurement device for reactor internal Download PDFInfo
- Publication number
- CN203731996U CN203731996U CN201420088012.XU CN201420088012U CN203731996U CN 203731996 U CN203731996 U CN 203731996U CN 201420088012 U CN201420088012 U CN 201420088012U CN 203731996 U CN203731996 U CN 203731996U
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- China
- Prior art keywords
- underwater
- measurement mechanism
- gage beam
- frame
- measurement device
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- 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.)
- Expired - Lifetime
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- 238000005259 measurement Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 abstract description 10
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract description 3
- 239000004327 boric acid Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 238000005202 decontamination Methods 0.000 abstract 1
- 230000003588 decontaminative effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model, which belongs to the field of the underwater measurement apparatus especially for in-service maintenance of reactor internals of a pressurized water reactor nuclear power plant, provides an underwater up-to-down gap measurement device for reactor internal, wherein the measurement device can be used for precisely measuring the gap between the upper side and the lower side of supporting legs of the installed support at the outer wall surface of the reactor internal underwater. The underwater up-to-down gap measurement device consists of an upper measuring device, a lower measuring device, a rack (6), a mounting bolt (4), a mounting base plate (10); and the upper measuring device includes feeler gauge sheets (1), measuring arms (2), a rotating shaft (3), an oscillating cylinder (7), limiting pins (5), a left intake tube (8), and a right intake tube (9). According to the scheme, the underwater up-to-down gap measurement device is manufactured by aluminium alloy and stainless steel, wherein the employed materials have properties of boric acid solution corrosion resistance and radiation resistance; the structure is simple and small and exquisite; the mass is light and the strength is high; and remote operation can be carried out and the surface decontamination effect after the nuclear pollution is good. Moreover, the maintenance time is shortened and thus the radiation dosage received by the personnel can be well controlled.
Description
Technical field
The utility model belongs to the special underwater measurement devices of the in-service maintenance of PWR nuclear power plant in-pile component, specifically for the upper and lower assemblage gap of in-pile component outside wall surface upper bracket feet is measured.
Background technology
The operating experience of nuclear power plant shows both at home and abroad, nuclear power generating equipment particularly in-pile component owing to being subject to the impact of various factors,, inevitably there is fault in the reasons such as severe in condition of work, device manufacturing process and manufacturing defect, structural design structure inconsiderate and equipment long-time running are aging.The improper shutdown causing because of equipment failure in order to reduce nuclear power plant, reduces the economic loss of therefore bringing, and improves the availability of nuclear power plant, and the in-service maintenance of countries in the world Dou Dui nuclear power plant is paid much attention to.And in-service nuclear power generating equipment generally has higher radioactivity, for ensureing personal security, when maintenance, need to use boric acid water to shield.Whole maintenance activity must be the carrying out of high radioactivity environment under water, and this has proposed new demand to the device using in maintenance process, and underwater measurement devices is exactly a large class wherein.
Summary of the invention
The purpose of this utility model is: upper and lower gap measuring apparatus under the in-service maintenance dedicated water of a kind of reactor core internals is provided, can accurately measures under water the upper and lower side clearance of institute's mounting bracket feet in in-pile component outside wall surface.
The technical solution of the utility model is as follows: a kind of reactor core internals is upper and lower gap measuring apparatus under water, comprise measurement mechanism, lower measurement mechanism, frame, air admission hole, described upper measurement mechanism comprises feeler leaf, gage beam, rotating shaft, oscillating cylinder, spacer pin, described gage beam is long handle shape, its right-hand member is arranged on frame by rotating shaft, described feeler leaf is lengthy motion picture shape, be arranged on the left end of gage beam, described spacer pin is arranged in frame, with the rotating range of restriction gage beam, gage beam in the time of retracted position for straight up, in the time of extended position, rotate to horizontal direction, described oscillating cylinder is arranged in frame, air admission hole is connected with oscillating cylinder.
In the bottom of upper measurement mechanism, mirror position also comprises lower measurement mechanism, and it comprises feeler leaf, gage beam, rotating shaft, oscillating cylinder, spacer pin equally, and position relationship is identical with upper measurement mechanism.
Described air admission hole comprises left air admission hole and right air admission hole.
Also comprise erection bolt, mounting base, described mounting base is that two jiaos of upper left and bottom rights are with screw, lower-left and two jiaos of the upper rights rectangular flat with pilot hole, frame is arranged on mounting base, erection bolt comprises left erection bolt and right erection bolt, is arranged on respectively two places, bottom right, upper left of base plate.
Remarkable result of the present utility model is: under the in-service maintenance dedicated water of in-pile component, upper and lower gap measuring apparatus adopts aluminium alloy and the stainless steel manufacture of the aqueous corrosion of resistance to boric acid and irradiation, simple in structure small and exquisite, the light intensity of quality is high, be convenient to operated from a distance and be subject to nuclear pollution rear surface clean effect good.For shortening servicing time, control personnel accept radiation dose and have very great help.
Under the in-service maintenance dedicated water of in-pile component, upper and lower gap measuring apparatus can be measured gap more than 0.2mm.
Brief description of the drawings
Fig. 1 is a kind of reactor core internals described in the utility model upper and lower gap measuring apparatus planar structure schematic diagram under water
Fig. 2 is vertical view of the present utility model
In figure: 1 feeler leaf, 2 gage beams, 3 rotating shafts, 4 erection bolts, 5 spacer pins, 6 frames, 7 oscillating cylinders, 8 left draft tube, 9 right draft tube, 10 mounting bases
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
The utility model is a kind of reactor core internals upper and lower gap measuring apparatus under water, comprise measurement mechanism, lower measurement mechanism, frame 6, erection bolt 4, mounting base 10, upper measurement mechanism comprises feeler leaf 1, gage beam 2, rotating shaft 3, oscillating cylinder 7, spacer pin 5, left draft tube 8, right draft tube 9.Feeler leaf 1 is lengthy motion picture shape, be positioned at gage beam 2 left ends, gage beam 2 is long handle shape, its right-hand member is arranged on frame 6 by rotating shaft 3, and spacer pin 5 is arranged in frame 6, to limit the rotating range of gage beam 2, gage beam 2 in the time of retracted position for straight up, in the time of extended position, to horizontal direction rotation, oscillating cylinder 7 is arranged in frame 6, and left draft tube 8, right draft tube 9 are connected with oscillating cylinder 7.In the bottom of upper measurement mechanism, mirror position also comprises lower measurement mechanism, and it comprises feeler leaf, gage beam, rotating shaft, oscillating cylinder, spacer pin equally, and position relationship is identical with upper measurement mechanism.Frame 6 is arranged on mounting base 10, mounting base 10 is that two jiaos of upper left and bottom rights are with screw, lower-left and two jiaos of the upper rights rectangular flat with pilot hole, erection bolt 4 comprises left erection bolt and right erection bolt, is arranged on respectively two places, bottom right, upper left of base plate 10.
In the specific implementation, first roughly regulate the length of gage beam 2 according to testing distance, then gage beam be placed in to retracted position straight up, by apparatus installation on platform and tracheae is connected with oscillating cylinder.Device drops to position to be measured under water with platform.Then drive gage beam 2 to rotate to extended position by retracted position with oscillating cylinder.The situation that contacts with underwater probe observation feeler leaf with gap to be measured, to determine gap length.
Claims (4)
1. a reactor core internals upper and lower gap measuring apparatus under water, it is characterized in that: comprise measurement mechanism, lower measurement mechanism, frame (6), air admission hole, described upper measurement mechanism comprises feeler leaf (1), gage beam (2), rotating shaft (3), oscillating cylinder (7), spacer pin (5), described gage beam (2) is long handle shape, its right-hand member is arranged on frame (6) by rotating shaft (3), described feeler leaf (1) is lengthy motion picture shape, be arranged on the left end of gage beam (2), described spacer pin (5) is arranged in frame (6), with the rotating range of restriction gage beam (2), gage beam (2) in the time of retracted position for straight up, in the time of extended position, rotate to horizontal direction, described oscillating cylinder (7) is arranged in frame (6), air admission hole is connected with oscillating cylinder (7).
2. a kind of reactor core internals according to claim 1 upper and lower gap measuring apparatus under water, it is characterized in that: in the bottom of upper measurement mechanism, mirror position also comprises lower measurement mechanism, it comprises feeler leaf, gage beam, rotating shaft, oscillating cylinder, spacer pin equally, and position relationship is identical with upper measurement mechanism.
3. a kind of reactor core internals according to claim 1 upper and lower gap measuring apparatus under water, is characterized in that: described air admission hole comprises left air admission hole (8) and right air admission hole (9).
4. a kind of reactor core internals according to claim 1 and 2 upper and lower gap measuring apparatus under water, it is characterized in that: also comprise erection bolt (4), mounting base (10), described mounting base (10) is that two jiaos of upper left and bottom rights are with screw, lower-left and two jiaos of the upper rights rectangular flat with pilot hole, frame (6) is arranged on mounting base (10), erection bolt (4) comprises left erection bolt and right erection bolt, is arranged on respectively two places, bottom right, upper left of base plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088012.XU CN203731996U (en) | 2014-02-27 | 2014-02-27 | Underwater up-to-down gap measurement device for reactor internal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088012.XU CN203731996U (en) | 2014-02-27 | 2014-02-27 | Underwater up-to-down gap measurement device for reactor internal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203731996U true CN203731996U (en) | 2014-07-23 |
Family
ID=51202063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420088012.XU Expired - Lifetime CN203731996U (en) | 2014-02-27 | 2014-02-27 | Underwater up-to-down gap measurement device for reactor internal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203731996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024163A (en) * | 2017-05-15 | 2017-08-08 | 上海电机学院 | A kind of laser detector for the pre- twisted blade of steam turbine |
-
2014
- 2014-02-27 CN CN201420088012.XU patent/CN203731996U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024163A (en) * | 2017-05-15 | 2017-08-08 | 上海电机学院 | A kind of laser detector for the pre- twisted blade of steam turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: Shanghai Nuclear Engineering Research & Design Institute |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
|
| CX01 | Expiry of patent term |