CN104751905B - Shock sensors for control rod - Google Patents
Shock sensors for control rod Download PDFInfo
- Publication number
- CN104751905B CN104751905B CN201510194976.1A CN201510194976A CN104751905B CN 104751905 B CN104751905 B CN 104751905B CN 201510194976 A CN201510194976 A CN 201510194976A CN 104751905 B CN104751905 B CN 104751905B
- Authority
- CN
- China
- Prior art keywords
- annulus
- control rod
- shearing
- buffer
- connecting seat
- 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.)
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Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/10—Construction of control elements
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/10—Construction of control elements
- G21C7/117—Clusters of control rods; Spider construction
-
- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Measurement Of Force In General (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a kind of shock sensors for control rod, buffer stressed plate, buffer-type connecting seat and the shearing elastomer of annulus being circumferentially uniformly formed by connecting by eight circular arc beam type pure shears section including annulus, described annulus buffers stressed plate and described buffer-type connecting seat is separately positioned on the two ends of the shearing elastomer of described annulus, the side wall of the shearing elastomer of described annulus is provided with the leaded foil gauge of multi-disc band, and described buffer-type connecting seat is provided with the rubber seal core for wrapping up described lead.The sensor construction of present invention design replaces the hold-down ring structural member between control rod and buffer structure, can be with the universe stress-strain field of accurate measurement buffer structure stressed member hold-down ring, can be with the actual value of accurate measurement buffer structure stressed member hold-down ring suffered impulsive force when Dropping of control rod is ended, can have certain pressure, flowing water in normal work, be a kind of fabulous shock sensors of water proofing property.
Description
Technical field
The present invention relates to the control technology field of reactor, more particularly, to a kind of impulsive force sensing for control rod
Device.
Background technology
Control chain type reaction rate in reactor in a predetermined level, absorption need to be made with absorbing the material of neutron
Rod, referred to as control rod or safety rod, control rod is mainly used to compensate fuel consumption and adjusts reaction rate.
Under the emergencies such as earthquake, control rod quick scram can make reactor out of service under Gravitative Loads.Control rod
When scram ends, suffered impulsive force is to weigh the key technical index of buffer structure and buffering effect, is also control rod total life cycle
The key of reliability, so just adopt 1 in the Control rod drive line buffer structure design phase:1 Control rod drive line test mould
Type carries out Rod drop test and measures impulsive force to verify buffer structure.
Generally using traditional strain-type measuring method, it is as sensing element using strain ga(u)ge, is pasted onto shock
Thing or be knocked thing surface, body surface strain is converted into resistance and relatively changes, then become resistance with strain measuring instrument
Change and be converted into voltage or curent change, amplified detection surveying record, stress is converted into by surveyed strain.Traditional strain-type is surveyed
The shortcoming of amount method is：It is usually point-to-point measurement it is impossible to obtain the universe stress-strain field of buffer structure；Surveyed strain is quick
The mean strain on sense wire grid area coverage inner member surface, measurement error is larger；Suffered by buffering suface, eccentric impact force leads to side
The tension phenomenon strain testing conversion of pressurized side is inaccurate；Can not meet have certain flowing hydraulic pressure and work in water severe
Environmental condition.
For measurement in the guide pipe having water flowing, the water of flowing can be subject to not during making control rod free-falling
The interference in regular flow field, always eccentric with the shock of buffering plane when leading to scram to end, there is the pressurized side in side tension existing
As so that traditional strain-type measuring method cannot accurately obtain impulsive force numerical value, measurement is difficult to.
Content of the invention
The purpose of the present invention is that provides a kind of shock sensors for control rod to solve the above problems.
In order to achieve the above object, present invention employs technical scheme below：
A kind of shock sensors for control rod, including annulus buffering stressed plate, buffer-type connecting seat and by eight
The shearing elastomer of annulus that circular arc beam type pure shear section is circumferentially uniformly formed by connecting, described annulus buffering stressed plate and institute
State the two ends that buffer-type connecting seat is separately positioned on the shearing elastomer of described annulus, the side wall of the shearing elastomer of described annulus
It is provided with the leaded foil gauge of multi-disc band, described buffer-type connecting seat is provided with the rubber seal for wrapping up described lead
Core.
Further, the bottom even of described buffer-type connecting seat is provided with six threaded mounting holes.
Further, described buffer-type connecting seat is provided with the mounting groove for installing described rubber seal core.
Further, it is respectively arranged with inner shell and shell, described annulus inside and outside the shearing elastomer of described annulus
Cannelure for inner shell described in clamp and described shell is provided with buffering stressed plate and described buffer-type connecting seat.
Further, described foil gauge has four, and four described foil gauges are all pasted onto the shearing elastomer of described annulus
Side wall, the lead of four described foil gauges both passes through described rubber seal core.
Further, four described foil gauges all using multilayer flashing glue in the shearing elastomer of described annulus
Side wall.
Further, described circular arc beam type pure shear section has laterally zygomorphic technology groove and fabrication hole.
The beneficial effects of the present invention is：
The sensor construction of present invention design replaces the hold-down ring structural member between control rod and buffer structure, can be accurate
The universe stress-strain field of measurement buffer structure stressed member hold-down ring, can be existed with accurate measurement buffer structure stressed member hold-down ring
The actual value of suffered impulsive force when Dropping of control rod is ended, can in having certain pressure, the water of flowing normal work, be a kind of
The fabulous shock sensors of water proofing property.
Brief description
Fig. 1 is the main cross section structure diagram of the shock sensors for control rod of the present invention, complete in order to illustrate
Portion's internal structure, only depicts shell, does not draw inner shell；
Fig. 2 is the overlooking the structure diagram of the shock sensors for control rod of the present invention；
Fig. 3 is the present invention looks up structural representation of the shock sensors for control rod of the present invention；
Fig. 4 is the left view structural representation of the shock sensors for control rod of the present invention, in order to illustrate to strain
Shell and inner shell are all omitted by piece here；
In figure：1- lead, 2- rubber seal core, 3- shell, 4- buffer-type connecting seat, the shearing elastomer of 5- annulus, 6-
Annulus buffering stressed plate, 7- fabrication hole, 8- technology groove, 9- threaded mounting hole, 10- foil gauge, 11- mounting groove.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is further described in detail：
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present invention includes annulus buffering stressed plate 6, the shearing elastomer of annulus 5 and
Buffer-type connecting seat 4, annulus buffering stressed plate 6 and buffer-type connecting seat 4 are separately positioned on the two of the shearing elastomer of annulus 5
End, the side wall of the shearing elastomer of annulus 5 is provided with the foil gauge 10 of multi-disc band leaded 1, buffer-type connecting seat 4 is provided with
For wrapping up the rubber seal core 2 of lead 1, annulus buffering stressed plate 6 is one certain thickness torus, and its upper surface is done
Striking face when ending for Dropping of control rod, its lower surface is passed through uniform four arcses process section on circumference and is sheared bullet with annulus
Gonosome 5 is integrally attached to, and the impact force born all is uniformly transferred to annulus shearing elasticity body 5.
The bottom even of buffer-type connecting seat 4 is provided with six threaded mounting holes 9, and threaded mounting hole 9 is tight with buffer structure
Close fit connects, and makes sensor preferably substitute the hold-down ring in control rod and buffer structure, and accurately record that hold-down ring bears hits
Hit force value.
It is respectively arranged with inner shell and shell 3, annulus buffering stressed plate 6 eases up inside and outside the shearing elastomer of annulus 5
The cannelure being provided with for clamp inner shell and shell 3 is rushed on formula connecting seat 4, the shearing elastomer of annulus 5 is cylindrical to use encapsulation
Shell 3 packaging protection, inner circle encapsulation inner shell packaging protection, to prevent foil gauge 10 and lead 1 to be directly subject to the big of circulating water
Pressure washes away, and improves the service life of sensor.
It is provided with buffer-type connecting seat 4 for the mounting groove 11 installing rubber seal core 2 so that outward appearance is more attractive in appearance,
Rubber seal core 2 is more firm, save space, and arrangement lead 1 is more convenient.
Foil gauge 10 has four (can change the quantity of foil gauge 10 according to practical situation), and four foil gauges 10 are all pasted
In the side wall of the shearing elastomer of annulus 5, the lead 1 of four foil gauges 10 both passes through rubber seal core 2, and four foil gauges 10 are equal
Using multilayer flashing glue the shearing elastomer of annulus 5 side wall, thus sensor is provided with full water-proof function.
The shearing elastomer of annulus 5 is circumferentially uniformly formed by connecting by eight circular arc beam type pure shear sections, circular arc ellbeam
Formula pure shear section has laterally zygomorphic technology groove 8 and fabrication hole 7.That shears piece is constituted annulus by pasting foil gauge 10 at stress
Shearing dynamometry sensing element, by the change of suffered impact stress in structure universe by pure shear cut into slices on paste strain gauge essence
Really be converted to the linear change of voltage, it is whole with buffer-type connecting seat 4 that uniform four arcses process section on circumference is passed through in its lower end
Body connects；Such structure can eliminate and bear the test error that eccentric impact force causes, and impact force is divided into eight parts to measure by it,
Sensor is made to have higher sensitivity and precision.
The advantage of the shock sensors for control rod of the present invention is as follows：
1) contour structures designing can accurately replace hold-down ring and its functional structure in original structure；
2) have technology groove symmetrical above and below using eight and the circular arc beam type pure shear section of fabrication hole circumferentially uniformly connects
Connect, can by the change of suffered impact stress in structure universe by pure shear cut into slices on paste foil gauge 10 accurate transformation be electricity
The linear change of pressure；
3) shearing piece exterior arc surface surface bonding waterproof foil gauge 10 and corresponding water-proof treatment technology are so as to can be
Have in the water of flowing of certain pressure, accurately measurement buffer structure stressed member hold-down ring is hit when Dropping of control rod is ended
The actual size of power.
These are only presently preferred embodiments of the present invention, not in order to limit invention, such as our company also has a kind of impact
Buffer-type connecting seat 4 is made hierarchic structure by force transducer, and other structures all same, but function is basically identical, and therefore all
Any modification, equivalent and improvement of being made within the spirit and principles in the present invention etc., should be included in the guarantor of the present invention
In the range of shield.
Claims (7)
1. a kind of shock sensors for control rod it is characterised in that：Including annulus buffering stressed plate, buffer-type connecting seat
With the shearing elastomer of annulus being circumferentially uniformly formed by connecting by eight circular arc beam type pure shears section, described annulus buffering is subject to
Power plate and described buffer-type connecting seat are separately positioned on the two ends of the shearing elastomer of described annulus, the shearing elasticity of described annulus
The side wall of body is provided with the leaded foil gauge of multi-disc band, and described buffer-type connecting seat is provided with for wrapping up described lead
Rubber seal core.
2. the shock sensors for control rod according to claim 1 it is characterised in that：Described buffer-type connecting seat
Bottom even be provided with six threaded mounting holes.
3. the shock sensors for control rod according to claim 1 it is characterised in that：Described buffer-type connecting seat
On be provided with mounting groove for installing described rubber seal core.
4. the shock sensors for control rod according to claim 1 it is characterised in that：The shearing bullet of described annulus
It is respectively arranged with inner shell and shell inside and outside gonosome, described annulus buffering stressed plate and described buffer-type connecting seat are all provided with
It is equipped with the cannelure for inner shell described in clamp and described shell.
5. the shock sensors for control rod according to claim 1 it is characterised in that：Described foil gauge has four
Piece, four described foil gauges are all pasted onto the side wall of the shearing elastomer of described annulus, and the lead of four described foil gauges is all worn
Cross described rubber seal core.
6. the shock sensors for control rod according to claim 5 it is characterised in that：Four described foil gauges are equal
Using multilayer flashing glue the shearing elastomer of described annulus side wall.
7. the shock sensors for control rod according to claim 1 it is characterised in that：Described circular arc beam type is pure
Shearing piece has laterally zygomorphic technology groove and fabrication hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194976.1A CN104751905B (en) | 2015-04-22 | 2015-04-22 | Shock sensors for control rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194976.1A CN104751905B (en) | 2015-04-22 | 2015-04-22 | Shock sensors for control rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104751905A CN104751905A (en) | 2015-07-01 |
| CN104751905B true CN104751905B (en) | 2017-03-08 |
Family
ID=53591453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510194976.1A Active CN104751905B (en) | 2015-04-22 | 2015-04-22 | Shock sensors for control rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN104751905B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900414B (en) * | 2019-03-28 | 2024-02-23 | 中国工程物理研究院总体工程研究所 | Bending moment sensor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2618248B1 (en) * | 1987-07-15 | 1992-01-03 | Framatome Sa | NUCLEAR FUEL ASSEMBLY WITH HOLDING STRUCTURE AND ANTI-THEFT DEVICE. |
| US5485140A (en) * | 1994-06-24 | 1996-01-16 | Bussin; George N. | Vehicle obstacle detector and alarm system |
| CN100357716C (en) * | 2005-10-14 | 2007-12-26 | 常熟市百灵天平仪器有限公司 | Resistance strained sensor with protector |
| CN201273838Y (en) * | 2008-09-10 | 2009-07-15 | 中航电测仪器股份有限公司 | Double-shear girder-type weighing transducer |
| CN101789274A (en) * | 2009-01-22 | 2010-07-28 | 重庆仪表材料研究所 | Rod position measuring system of nuclear reactor control rod based on magnetostrictive principle |
| CN203644404U (en) * | 2013-12-31 | 2014-06-11 | 一重集团大连设计研究院有限公司 | Device for detecting thrusting resistance of nuclear power reactor internal member control rod guide cylinder component |
| CN204537707U (en) * | 2015-04-22 | 2015-08-05 | 中国工程物理研究院总体工程研究所 | For the shock sensors of control rod |
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2015
- 2015-04-22 CN CN201510194976.1A patent/CN104751905B/en active Active
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| Publication number | Publication date |
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| CN104751905A (en) | 2015-07-01 |
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