CN203799676U - Fixing device for absolute displacement detector - Google Patents
Fixing device for absolute displacement detector Download PDFInfo
- Publication number
- CN203799676U CN203799676U CN201420109999.9U CN201420109999U CN203799676U CN 203799676 U CN203799676 U CN 203799676U CN 201420109999 U CN201420109999 U CN 201420109999U CN 203799676 U CN203799676 U CN 203799676U
- Authority
- CN
- China
- Prior art keywords
- detector
- absolute displacement
- displacement detector
- fixing device
- shaped
- 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.)
- Expired - Lifetime
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 230000005855 radiation Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model relates to a fixing device for an absolute displacement detector, and particularly relates to a fixing device which has the advantages that the absolute displacement detector can be installed stably, and mounted basic objects cannot be mechanically damaged. The fixing device for the absolute displacement detector comprises an inverted L-shaped base, U-shaped clamping pieces and a support plate, wherein the inverted L-shaped base is provided with an upper panel and a lower straight panel, the upper panel is used for fixing the detector; the concave support plate is arranged on one side, opposite to the upper panel, of the lower straight panel, a metal stand column is clamped between the two side walls of the support plate by the U-shaped clamping pieces, and the tail ends of two arms of the U-shaped clamping pieces are fixed on the lower straight panel. Due to the use of the fixing device for the absolute displacement detector, the detector can be stably installed on the metal stand column of an upper component, the vibration of a reactor core can be effectively transmitted to the detector, the flexibility of the detector cannot be affected, and the mechanical strength of the metal stand column cannot be damaged as well.
Description
Technical field
The utility model relates to a kind of absolute displacement detector stationary installation, is specifically related to a kind of absolute displacement detector that can make and firmly installs and can be to the stationary installation of basic deposits yields mechanical damage is not installed.
Background technology
Absolute displacement detector (calling detector in the following text) gathers the vertical low-frequency vibration signal of reactor reactor pressure vessel during different capacity level run.Detector is arranged in the thermal shield of reactor pressure vessel, and during unit operation, detector operating ambient temperature approaches 300 DEG C, and this area radiation dosage is high.Under rugged surroundings, work for a long time, can cause breakdown detector to take place frequently.According to statistics, during No. 1/2 the first six fuel recycle of unit operation of gulf, field nuclear power station, two units amount to 8 detectors, and the phenomenon of power supply shakiness, insulation reduction so that breakdown detector has all occurred at different time.Meanwhile, during overhaul, in the time carrying out the work of dismounting detector, because working environment radiation dose is high, the radiation dose of staff's acceptance is higher.Under the state reloading at follow-up unit long period, cannot ensure reliability service 18 months with the operation conditions of moment detector, far can not meet the requirement to detector operational reliability in technical manual.
For ensureing the reliability service of detector, and reduce temperature and the radiation dose of detector work environment of living in, do not affecting on the basis of detector inherent diagnosis performance, detector installation site is displaced on the assembly metal upright post of top, as shown in Figure 1.The former installation site of detector (main faying face bolt end face) is plane, can combine closely mutually with the detector base that is both plane, does not need extra stationary installation.And assembly metal upright post surface in top is cambered surface, detector cannot be installed, if punch or cut the physical strength that can affect top assembly, there is hidden danger on metal upright post.
Summary of the invention
Technical problem to be solved in the utility model is not affect under the prerequisite of detector performance and reactor top assembly metal upright post physical strength, detector is firmly installed on the assembly metal upright post of reactor top, to reduce temperature and the radiation dose of detector work environment of living in.
A kind of absolute displacement detector stationary installation of the present utility model, comprises inverted L-shaped pedestal, U-shaped fastener and back up pad, it is characterized in that: described inverted L-shaped pedestal has the straight plate of upper flat plate and bottom, and wherein upper flat plate is for fixed detector; The straight backboard in bottom is provided with concave support plate to a side of upper flat plate, and U-shaped fastener is stuck in metal upright post between back up pad two side, and U-shaped fastener two arm ends are fixed on the straight plate in bottom.
Preferably, two the U-shaped fasteners that be arranged in parallel up and down, U-shaped fastener two arm ends are fixed by screws on the straight plate in bottom.
Preferably, the two side spacing of described back up pad is less than metal upright post diameter.
Use absolute displacement detector stationary installation of the present utility model, can make on the stable metal upright post that is arranged on top assembly of detector, and can effectively the vibration signal of reactor core be transferred to detector, neither can affect detector sensitivity, also can not destroy the physical strength of metal upright post.
Brief description of the drawings
Fig. 1 is a kind of absolute displacement detector stationary installation composition of the present utility model and front elevation is installed;
Fig. 2 is a kind of absolute displacement detector stationary installation composition of the present utility model and vertical view is installed;
Wherein, 1-upper flat plate, 2-detector base, 3-threaded hole, 4-detector, the straight plate in 5-bottom, 6-metal upright post, 7-U type fastener, 8-U type fastener nut, 9-back up pad.
Embodiment
As shown in Figure 1, a kind of absolute displacement detector stationary installation of the present utility model, comprises inverted L-shaped pedestal, U-shaped fastener and back up pad.
Described inverted L-shaped pedestal has the straight plate 5 of upper flat plate 1 and bottom, wherein in upper flat plate 1, is provided with threaded hole 3 for fixed detector 4; The straight plate 5 in a bottom dorsad side of upper flat plate 1 is provided with concave support plate 9, and the pair of U-shaped fastener 7 be arrangeding in parallel is up and down stuck in metal upright post 6 between back up pad 9 two sides, and 7 liang of arm ends of U-shaped fastener are fixed on the straight plate 5 in bottom by modes such as screws.The two side spacing of described back up pad 9 is less than metal upright post 6 diameters, with to 6 clamping actions of metal upright post, increases the stability of installing.
A kind of absolute displacement detector stationary installation of the present utility model in use, need to use screw that fixed detector 4 is fixed in upper flat plate 1 by threaded hole 3 together with detector pedestal 2, use afterwards a pair of U-shaped fastener 7 be arrangeding in parallel up and down that metal upright post 6 is snapped between U-shaped fastener 7 and steel bracing plate 9, pass after the through hole on the straight plate 5 in bottom until the end of U-shaped fastener 7, use U-shaped fastener nut 8 fastening.
Claims (3)
1. an absolute displacement detector stationary installation, comprise inverted L-shaped pedestal, U-shaped fastener (7) and back up pad (9), it is characterized in that: described inverted L-shaped pedestal has the straight plate of upper flat plate (1) and bottom (5), wherein upper flat plate (1) is for fixed detector (4); The straight plate in bottom (5) dorsad side of upper flat plate (1) is provided with concave support plate (9), and U-shaped fastener (7) is stuck in metal upright post (6) between back up pad (9) two side, and U-shaped fastener (7) two arm ends are fixed on the straight plate in bottom (5).
2. absolute displacement detector stationary installation as claimed in claim 1, is characterized in that: two the U-shaped fasteners (7) that be arranged in parallel up and down, U-shaped fastener (7) two arm ends are fixed by screws on the straight plate in bottom (5).
3. absolute displacement detector stationary installation as claimed in claim 1 or 2, is characterized in that: the two side spacing of described back up pad (9) is less than metal upright post (6) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109999.9U CN203799676U (en) | 2014-03-12 | 2014-03-12 | Fixing device for absolute displacement detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109999.9U CN203799676U (en) | 2014-03-12 | 2014-03-12 | Fixing device for absolute displacement detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203799676U true CN203799676U (en) | 2014-08-27 |
Family
ID=51381872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420109999.9U Expired - Lifetime CN203799676U (en) | 2014-03-12 | 2014-03-12 | Fixing device for absolute displacement detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203799676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829252A (en) * | 2021-09-06 | 2021-12-24 | 江苏核电有限公司 | Fixing device for installing reactor core vibration detector and fixing method thereof |
-
2014
- 2014-03-12 CN CN201420109999.9U patent/CN203799676U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829252A (en) * | 2021-09-06 | 2021-12-24 | 江苏核电有限公司 | Fixing device for installing reactor core vibration detector and fixing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |
|
| CX01 | Expiry of patent term |