CN104751905A - Impact force sensor for control rod - Google Patents
Impact force sensor for control rod Download PDFInfo
- Publication number
- CN104751905A CN104751905A CN201510194976.1A CN201510194976A CN104751905A CN 104751905 A CN104751905 A CN 104751905A CN 201510194976 A CN201510194976 A CN 201510194976A CN 104751905 A CN104751905 A CN 104751905A
- Authority
- CN
- China
- Prior art keywords
- buffer
- control rod
- annulus
- shearing
- connection block
- 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
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- 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 an impact force sensor for a control rod. The impact force sensor comprises a circular ring buffer stress plate, a buffer-type connecting seat and circular ring cutting-type elastic body which is formed by uniformly connecting eight arc beam-type pure cutting sheets along the circumference, wherein the circular ring buffer stress plate and the buffer-type connecting seat are respectively arranged on two ends of the circular ring cutting-type elastic body, a plurality of strain sheets with a lead are arranged on the side wall of the circular cutting-type elastic body, and the buffer-type connecting seat is provided with a rubber sealing core for covering the lead. The sensor structure is used for substituting a compression ring structural part between the control rod and a buffer structure, so that the global stress strain field of a buffer structural stress part compression ring can be precisely measured, the real value of the impact force of the buffer structural stress part compression ring when the control rod is finally dropped can be precisely measured, and the impact force sensor can work normally in the flowing water at the given pressure and is an impact force sensor with good water resistance.
Description
Technical field
The present invention relates to the control technology field of reactor, particularly relate to a kind of shock sensors for control rod.
Background technology
Control chain type reaction rate in reactor in a predetermined level, need make absorbing rod with the material absorbing neutron, be referred to as control rod or safety rod, control rod is mainly used to compensate for fuel consumption and regulates reaction rate.
Under the emergencies such as earthquake, control rod can quick scram make reactor out of service under Gravitative Loads.Dropping of control rod at the end suffered impulsive force weighs the key technical index of buffer structure and buffering effect, also be the key of control rod total life cycle reliability, so carry out Rod drop test in the Control rod drive line buffer structure design phase with regard to adopting the Control rod drive line test model of 1:1 and measure impulsive force to verify buffer structure.
Usual employing tradition strain-type measuring method, namely be adopt strain ga(u)ge as sensitive element, be pasted onto rammer or be knocked thing surface, convert body surface strain to resistance relatively to change, then resistance variations is converted to voltage or curent change with strain measuring instrument, through amplification demodulator survey record, be converted into stress by surveyed strain.The shortcoming of traditional strain-type measuring method is: be generally point-to-point measurement, can not obtain the universe stress-strain field of buffer structure; To survey strain be the mean strain on sensible wire grid area coverage inner member surface, measuring error is larger; It is inaccurate that eccentric impact suffered by buffering suface causes pressurized side, side tension phenomenon strain testing to convert; Can not meet and have certain flowing hydraulic pressure and the severe environmental conditions worked in water.
For measurement in the guide pipe having water flow, the water of flowing makes the interference that can be subject to irregular flow field in control rod free-falling process, cause scram at the end always eccentric with the shock of buffering plane, there is pressurized side, side tension phenomenon, make traditional strain-type measuring method cannot accurately obtain impulsive force numerical value, measure and be difficult to realize.
Summary of the invention
Object of the present invention is just to provide a kind of shock sensors for control rod to solve the problem.
In order to achieve the above object, present invention employs following technical scheme:
A kind of shock sensors for control rod, comprise annulus buffering stressed plate, buffer-type Connection Block and to be cut into slices the shearing elastic body of annulus be circumferentially evenly formed by connecting by eight circular arc beam type pure shears, described annulus buffering stressed plate and described buffer-type Connection Block are separately positioned on the shearing elastomeric two ends of described annulus, the shearing elastomeric sidewall of described annulus is provided with the leaded foil gauge of multi-disc band, described buffer-type Connection Block is provided with the rubber seal core for wrapping up described lead-in wire.
Further, the bottom even of described buffer-type Connection Block is provided with six threaded mounting holes.
Further, described buffer-type Connection Block is provided with the mounting groove for installing described rubber seal core.
Further, the shearing elastomeric inside and outside both sides of described annulus are respectively arranged with inner casing and shell, described annulus buffering stressed plate and described buffer-type Connection Block are provided with the ring groove for clamping described inner casing and described shell.
Further, described foil gauge has four, and four described foil gauges are all pasted onto the shearing elastomeric sidewall of described annulus, and the lead-in wire of four described foil gauges is all through described rubber seal core.
Further, four described foil gauges all adopt multilayer flashing glue at the shearing elastomeric sidewall of described annulus.
Further, described circular arc beam type pure shear section has laterally zygomorphic technology groove and fabrication hole.
Beneficial effect of the present invention is:
The sensor construction of the present invention's design replaces the hold-down ring structural member between control rod and buffer structure, accurately can measure the universe stress-strain field of buffer structure stressed member hold-down ring, accurately can measure the actual value of buffer structure stressed member hold-down ring in Dropping of control rod at the end suffered impulsive force, normally can work in the water having certain pressure, flowing, be the shock sensors that a kind of water proofing property is fabulous.
Accompanying drawing explanation
Fig. 1 is the main sectional structure schematic diagram of the shock sensors for control rod of the present invention, in order to illustrate totality structure, only depicting shell, not being drawn by inner casing;
Fig. 2 is the plan structure schematic diagram of the shock sensors for control rod of the present invention;
Fig. 3 be the shock sensors for control rod of the present invention look up structural representation;
Fig. 4 is the left TV structure schematic diagram of the shock sensors for control rod of the present invention, in order to illustrate foil gauge, shell and inner casing is all omitted here;
In figure: 1-lead-in wire, 2-rubber seal core, 3-shell, 4-buffer-type Connection Block, the shearing elastic body of 5-annulus, 6-annulus buffering stressed plate, 7-fabrication hole, 8-technology groove, 9-threaded mounting hole, 10-foil gauge, 11-mounting groove.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described in detail:
As Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, the present invention includes annulus buffering stressed plate 6, the shearing elastic body 5 of annulus and buffer-type Connection Block 4, annulus buffering stressed plate 6 and buffer-type Connection Block 4 are separately positioned on the two ends of the shearing elastic body 5 of annulus, the sidewall of the shearing elastic body of annulus 5 is provided with the foil gauge 10 of multi-disc band leaded 1, buffer-type Connection Block 4 is provided with the rubber seal core 2 for wrapping up lead-in wire 1, annulus buffering stressed plate 6 is one certain thickness torus, its upper surface is as Dropping of control rod striking face at the end, its lower surface is connected with annulus shearing elasticity body 5 entirety by circumferentially uniform four arcs process section, the impact of bearing all evenly is passed to annulus shearing elasticity body 5.
The bottom even of buffer-type Connection Block 4 is provided with six threaded mounting holes 9, and threaded mounting hole 9 and buffer structure are closely connected, and makes sensor better substitute hold-down ring in control rod and buffer structure, accurately records the shock force value that hold-down ring bears.
The inside and outside both sides of the shearing elastic body of annulus 5 are respectively arranged with inner casing and shell 3; annulus buffering stressed plate 6 and buffer-type Connection Block 4 are provided with ring groove for clamping inner casing and shell 3; annulus shearing elastic body 5 cylindrical package casing 3 packaging protection; inner circle encapsulation inner casing packaging protection; wash away with the large pressure preventing foil gauge 10 and lead-in wire 1 to be directly subject to circulating water, improve the serviceable life of sensor.
Buffer-type Connection Block 4 being provided with the mounting groove 11 for installing rubber seal core 2, making outward appearance more attractive in appearance, rubber seal core 2 is more firm, saves space, arranges that lead-in wire 1 is more convenient.
Foil gauge 10 has four (can change the quantity of foil gauge 10 according to actual conditions), four foil gauges 10 are all pasted onto the sidewall of the shearing elastic body 5 of annulus, the lead-in wire 1 of four foil gauges 10 is all through rubber seal core 2, four foil gauges 10 all adopt multilayer flashing glue at the sidewall of the shearing elastic body 5 of annulus, thus sensor is provided with full water-proof function.
The shearing elastic body 5 of annulus is cut into slices by eight circular arc beam type pure shears and is circumferentially evenly formed by connecting, and circular arc beam type pure shear section has laterally zygomorphic technology groove 8 and fabrication hole 7.That shears sheet forms the shearing dynamometry sensitive element of annulus by stress place stickup foil gauge 10, the strainometer accurate transformation of the change of shock stress suffered in structure universe above being pasted by pure shear section is the linear change of voltage, and its lower end is by circumferentially uniform four arcs process section and buffer-type Connection Block 4 integrated connection; Such structure can eliminate the test error bearing eccentric impact and cause, and impact is divided into eight parts to measure by it, makes sensor have higher sensitivity and precision.
The advantage of the shock sensors for control rod of the present invention is as follows:
1) contour structures designed accurately can replace hold-down ring in original structure and its functional structure;
2) adopt eight to have upper and lower symmetrical technology groove to be circumferentially evenly connected with the circular arc beam type pure shear section of fabrication hole, foil gauge 10 accurate transformation change of shock stress suffered in structure universe above can pasted by pure shear section is the linear change of voltage;
3) the sheet exterior arc surface bonding waterproof foil gauge 10 in surface and corresponding water-proof treatment technology is sheared, can in the water of flowing having certain pressure, Measurement accuracy buffer structure stressed member hold-down ring is in the actual size of Dropping of control rod at the end suffered impulsive force.
These are only preferred embodiment of the present invention; not in order to restriction invention; as our company also has a kind of shock sensors that buffer-type Connection Block 4 is made staircase structure; and other structure is all identical; but function is basically identical; therefore all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included in protection scope of the present invention.
Claims (7)
1. the shock sensors for control rod, it is characterized in that: comprise annulus buffering stressed plate, buffer-type Connection Block and to be cut into slices the shearing elastic body of annulus be circumferentially evenly formed by connecting by eight circular arc beam type pure shears, described annulus buffering stressed plate and described buffer-type Connection Block are separately positioned on the shearing elastomeric two ends of described annulus, the shearing elastomeric sidewall of described annulus is provided with the leaded foil gauge of multi-disc band, described buffer-type Connection Block is provided with the rubber seal core for wrapping up described lead-in wire.
2. the shock sensors for control rod according to claim 1, is characterized in that: the bottom even of described buffer-type Connection Block is provided with six threaded mounting holes.
3. the shock sensors for control rod according to claim 1, is characterized in that: described buffer-type Connection Block is provided with the mounting groove for installing described rubber seal core.
4. the shock sensors for control rod according to claim 1, it is characterized in that: the shearing elastomeric inside and outside both sides of described annulus are respectively arranged with inner casing and shell, described annulus buffering stressed plate and described buffer-type Connection Block being provided with the ring groove for clamping described inner casing and described shell.
5. the shock sensors for control rod according to claim 1, it is characterized in that: described foil gauge has four, four described foil gauges are all pasted onto the shearing elastomeric sidewall of described annulus, and the lead-in wire of four described foil gauges is all through described rubber seal core.
6. the shock sensors for control rod according to claim 5, is characterized in that: four described foil gauges all adopt multilayer flashing glue at the shearing elastomeric sidewall of described annulus.
7. the shock sensors for control rod according to claim 1, is characterized in that: described circular arc beam type pure shear section 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 true CN104751905A (en) | 2015-07-01 |
| CN104751905B CN104751905B (en) | 2017-03-08 |
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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 |
|---|---|
| CN (1) | CN104751905B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900414A (en) * | 2019-03-28 | 2019-06-18 | 中国工程物理研究院总体工程研究所 | Moment of flexure sensor |
Citations (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 |
| CN1746635A (en) * | 2005-10-14 | 2006-03-15 | 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 |
-
2015
- 2015-04-22 CN CN201510194976.1A patent/CN104751905B/en active Active
Patent Citations (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 |
| CN1746635A (en) * | 2005-10-14 | 2006-03-15 | 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 |
Non-Patent Citations (2)
| Title |
|---|
| 宋威 等: "水压驱动控制棒快速落棒冲击研究", 《原子能科学技术》 * |
| 王少华 等: "高温气冷堆控制棒缓冲器的分析与试验验证", 《原子能科学技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900414A (en) * | 2019-03-28 | 2019-06-18 | 中国工程物理研究院总体工程研究所 | Moment of flexure sensor |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN104751905B (en) | 2017-03-08 |
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