CN109973709A - A kind of dual-gripper column type jaw type thrust pickup - Google Patents
A kind of dual-gripper column type jaw type thrust pickup Download PDFInfo
- Publication number
- CN109973709A CN109973709A CN201711441542.2A CN201711441542A CN109973709A CN 109973709 A CN109973709 A CN 109973709A CN 201711441542 A CN201711441542 A CN 201711441542A CN 109973709 A CN109973709 A CN 109973709A
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- CN
- China
- Prior art keywords
- pedestal
- dual
- thrust pickup
- rod
- gripper
- 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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- 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 abstract description 57
- 239000011888 foil Substances 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 9
- 241000227287 Elliottia pyroliflora Species 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000002405 diagnostic procedure Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
- F16B2/12—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using sliding jaws
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The present invention relates to thrust pickup technical fields, specifically disclose a kind of dual-gripper column type jaw type thrust pickup.The sensor includes support column, pedestal A, pedestal B and resistance strain gage, wherein pedestal A is fixedly connected with pedestal B by support column, and is capable of fixing and is mounted on polished rod or threaded rod to be detected；In pedestal B two sides symmetrical mirror, to installation, there are four resistance strain gages to form wheatstone bridge configuration.The sensor can be in the valve york piece of narrow space, and on the polished rod or threaded rod of valve rod, the movable valve lever clamp that one end is connected with adjusting rod can make sensor be suitable for the valve rod of different-diameter in a certain range for quick demolition, installation；Resistance strain gage is packaged in sensor frame in the sensor production stage, does not need temporarily to paste foil gauge, is effectively reduced and is manually pasted radio exposure dosage brought by foil gauge on valve rod.Meanwhile dual-gripper column type clamp sensor structure is simple, manufacture easy to process.
Description
Technical field
The invention belongs to thrust pickup technical fields, and in particular to a kind of dual-gripper column type jaw type thrust pickup.
Background technique
Domestic and international nuclear power plant needs the working performance of periodically evaluation factory's inner valve, therefore would generally select during overhaul to portion
Sub-valve carries out performance diagnostic test, and valve rod by thrust is one of important evaluation parameter when valve event.It, must benefit when test
The strain generated with foil gauge measurement valve rod by thrust, then thrust magnitude suffered by valve rod is obtained by formula scales.Part item
Foil gauge can be permanently pasted on valve rod by the valve that part allows, and reserve cable interface, connect cable when measurement every time
Interface can be acquired, but the most of valves of domestic nuclear power plant do not have sufficient space, and some valves are also in high radiation agent
Region is measured, therefore the way that each overhaul Shi Douwei valve rod pastes disposable foil gauge is not only expensive, it is time-consuming and laborious, can also it increase
Add the radioactivity irradiation level of valve service personnel.
Currently, not yet finding the related patents information of such dual-gripper column type jaw type thrust pickup both at home and abroad.
Therefore, it is necessary in view of the above-mentioned problems, propose that a kind of structure is simple, can Fast Installation, disassembly, and it is reusable
Thrust pickup, when meeting nuclear power plant's valve diagnosis test job test valve rod thrust the needs of.
Summary of the invention
The purpose of the present invention is to provide a kind of dual-gripper column type jaw type thrust pickups, can be clamped on polished rod or screw thread
On bar, and can fast assembling-disassembling, repeatedly use, and meet valve performance diagnostic test required precision.
Technical scheme is as follows: a kind of dual-gripper column type jaw type thrust pickup, the sensor include support column,
Pedestal A, pedestal B and resistance strain gage, wherein pedestal A is fixedly connected with pedestal B by support column, and is capable of fixing installation
On polished rod to be detected or threaded rod；In pedestal B two sides symmetrical mirror, to installation, there are four resistance strain gage composition favour stone electricity
Bridge structure.
The pedestal B is equipped with two support columns being parallel to each other, and pedestal A realizes base by support column fixing bolt
Seat A and support column it is relatively fixed.
The center pedestal A is provided with threaded hole, the moving valve that threaded rod passes through pedestal A, and connects screw thread boom end
Bar cramp is oppositely arranged with the fixation valve lever clamp on pedestal B.
The movable valve lever clamp end face opposite with fixed valve lever clamp is V-type plane, convenient to polished rod or threaded rod
Clamping.
The resistance strain gage is mounted in the groove of the two sides pedestal B, and is packaged using packaging plastic.
It is installed in the pedestal B and is additionally provided with foil gauge protection cap on the position of resistance strain gage.
The end pedestal B is equipped with cable, and the signal that resistance strain gage is generated exports.
Copper bush is equipped on the outside of the end pedestal A.
Remarkable result of the invention is: a kind of dual-gripper column type jaw type thrust pickup of the present invention, using double
The design of column type clamp type structure is supported, thrust pickup is made to be suitable for the larger situation (1.5 inches of diameter or more) of stem diameter, energy
Enough in the valve york piece of narrow space, on the polished rod or threaded rod of valve rod, one end is connected with the work of adjusting rod for quick demolition, installation
Ovable valve stem presss from both sides the valve rod that sensor can be made to be suitable for different-diameter in a certain range；Resistance strain gage is in the sensor production stage
It is packaged in sensor frame, does not need temporarily to paste foil gauge, effectively reduce and manually paste foil gauge institute band on valve rod
The radio exposure dosage come.Meanwhile dual-gripper column type clamp sensor structure is simple, manufacture easy to process.
Detailed description of the invention
Fig. 1 is a kind of dual-gripper column type jaw type thrust pickup structural schematic diagram of the present invention；
Fig. 2 is that a kind of dual-gripper type jaw type thrust pickup of the present invention installs application schematic diagram；
In figure: 1, support column；2, movable valve lever clamp；3, threaded rod；4, pedestal A；5, copper bush；6, the fixed spiral shell of support column
Bolt；7, fixed valve lever clamp；8, foil gauge protection cap；9, pedestal B；10, resistance strain gage；11, cable；12, valve york piece；13,
Dual-gripper column type jaw type thrust pickup；14, valve rod.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, a kind of dual-gripper column type jaw type thrust pickup, including support column 1, movable valve lever clamp 2, threaded rod
3, pedestal A4, pedestal B9 and resistance strain gage 10, wherein two support columns being parallel to each other 1 are installed on pedestal B9, and
Hatch frame is formed, is cased with pedestal A4 in 1 upper end of support column, and realize pedestal A4 and support using support column fixing bolt 6
Column 1 it is relatively fixed；It is provided with threaded hole at the center pedestal A4, threaded rod 3 passes through the copper bush 5 and pedestal A4 spiral shell on the outside of pedestal A4
Pit, and movable valve lever clamp 2 is installed in 3 end of threaded rod, make movable fixation valve rod valve lever clamp 2 and be mounted on pedestal B9
Folder 7 is oppositely arranged, wherein be respectively formed on V-type plane in movable valve lever clamp 2 and fixed 7 opposite face of valve lever clamp, aspect to polished rod or
The clamping of threaded rod；Above or below pedestal B9 in the groove of two sides, using packaging plastic encapsulation, there are four resistance strain gages 10, and utilize
Foil gauge protection cap 8 realizes the protection to resistance strain gage 10；Four resistance strain gages 10 form wheatstone bridge configuration, and benefit
Signal is exported with the cable 11 that the end pedestal B9 is connected.
As described in Figure 2, the specific work process of a kind of dual-gripper column type jaw type thrust pickup of the present invention are as follows:
When dual-gripper column type jaw type thrust pickup 13 described in installation, need first to remove two support column fixing bolts 6, by A pedestal
4, four parts and two support columns 1 including movable valve lever clamp 2, adjusting screw rod 3, copper bush 5 separate, two support columns it
Between form opening, by the opening sleeve when on valve rod, recycle two support column fixing bolts 6 by A pedestal 4, movable valve lever clamp
2, adjusting screw rod 3 and copper bush 5 are reinstalled on the support columns.Finally, sensor is mounted as a whole on valve using adjusting screw rod 3
On bar.For four resistance strain gages 10 with packaging plastic symmetric packages in 9 two sides of B pedestal, the two panels foil gauge of every side is also mirror
Avoid foil gauge by External force interference as symmetrical, and using the foil gauge protection cap 8.Four resistance are answered
Become piece 10 and form wheatstone bridge circuits, valve rod 14 is by thrust and when generating strain, the activity valve lever clamp 2, fixed valve rod
7 are pressed from both sides due to valve rod 14 expands by thrust, and thrust is transferred to the intermediate position of A pedestal 4 and B pedestal 9, and A pedestal 4 and B
The both ends of pedestal 9 are supported the fixed constraint of column, so when pedestal A4 and pedestal B9 also can accordingly generate strain, the electricity
The resistance resistance value under the effects of strain that B pedestal 9 generates of foil gauge 10 changes, Wheatstone bridge disequilibrium, output and valve
The proportional electric signal of thrust size suffered by bar can be obtained valve rod by measuring bridge output electric signal at this time and be produced by thrust
Raw radial deformation recycles following formula that can derive thrust suffered by valve rod.
F is thrust suffered by valve rod, and E is stem material Young's modulus, and ν is stem material Poisson's ratio, and D is stem diameter, Δ D
For radial deformation
When the dual-gripper column type jaw type thrust pickup 13, which is held on, to be measured in threaded stem, threaded stem portion
Dividing after being acted on by torque can be as spring, so that stem diameter becomes larger or becomes smaller.Screw thread position is answered to eliminate torque
Become the influence of measurement, after need to being modified by software importing torque modifying factor, actual stem diameter deflection can be obtained.
The fixed valve lever clamp 7 and movable valve lever clamp 2 are free to rotate, and adjustment sensor projected area makes it easy to install
On the valve rod in valve york piece, using the position of the adjustable movable valve lever clamp 2 of the adjusting screw rod 3 across copper bush 5, make to pass
Sensor is well held on the valve rod polished rod or threaded rod of different-diameter that (valve lever clamp thickness should be held on two threads enough
On, the stability of sensor when guaranteeing stem movement).
Claims (8)
1. a kind of dual-gripper column type jaw type thrust pickup, it is characterised in that: the sensor include support column (1), pedestal A (4),
Pedestal B (9) and resistance strain gage (10), wherein pedestal A (4) is fixedly connected with pedestal B (9) by support column (1), and energy
It is enough fixedly mounted on polished rod or threaded rod to be detected；In pedestal B (9) two sides symmetrical mirror, to installation, there are four resistance strain gages
(10) wheatstone bridge configuration is formed.
2. a kind of dual-gripper column type jaw type thrust pickup according to claim 1, it is characterised in that: the pedestal B
(9) two support columns (1) being parallel to each other are equipped with, and pedestal A (4) realizes pedestal A (4) by support column fixing bolt (6)
It is relatively fixed with support column (1).
3. a kind of dual-gripper column type jaw type thrust pickup according to claim 1, it is characterised in that: the pedestal A
(4) center is provided with threaded hole, the movable valve lever clamp (2) that threaded rod (3) passes through pedestal A (4), and connects threaded rod (3) end
It is oppositely arranged with the fixation valve lever clamp (7) on pedestal B (9).
4. a kind of dual-gripper column type jaw type thrust pickup according to claim 3, it is characterised in that: the moving valve
Bar cramp (2) end face opposite with fixed valve lever clamp (7) is V-type plane, the convenient clamping to polished rod or threaded rod.
5. a kind of dual-gripper column type jaw type thrust pickup according to claim 1, it is characterised in that: the resistance is answered
Become piece (10) to be mounted in the groove of pedestal B (9) two sides, and is packaged using packaging plastic.
6. a kind of dual-gripper column type jaw type thrust pickup according to claim 1, it is characterised in that: the pedestal B
(9) foil gauge protection cap (8) are additionally provided on the position of installation resistance strain gage (10) in.
7. a kind of dual-gripper column type jaw type thrust pickup according to claim 1, it is characterised in that: pedestal B (9) end
Equipped with cable (11), the signal that resistance strain gage is generated is exported.
8. a kind of dual-gripper column type jaw type thrust pickup according to claim 1, it is characterised in that: the pedestal A
(4) copper bush (5) are equipped on the outside of end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711441542.2A CN109973709A (en) | 2017-12-27 | 2017-12-27 | A kind of dual-gripper column type jaw type thrust pickup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711441542.2A CN109973709A (en) | 2017-12-27 | 2017-12-27 | A kind of dual-gripper column type jaw type thrust pickup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109973709A true CN109973709A (en) | 2019-07-05 |
Family
ID=67072302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711441542.2A Pending CN109973709A (en) | 2017-12-27 | 2017-12-27 | A kind of dual-gripper column type jaw type thrust pickup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109973709A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432865A (en) * | 2021-06-04 | 2021-09-24 | 苏州热工研究院有限公司 | Nuclear power plant valve fault diagnosis mechanical sensor and using method thereof |
| CN113804339A (en) * | 2020-06-16 | 2021-12-17 | 国核电站运行服务技术有限公司 | Force measuring device for measuring axial force of round rod |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969118A (en) * | 2014-05-16 | 2014-08-06 | 北京航空航天大学 | Novel composite material unnotched compression test fixture |
| US20150082902A1 (en) * | 2013-09-26 | 2015-03-26 | Fisher Controls International Llc | Valve stem connector with integrated stem force measurement |
| CN204461893U (en) * | 2015-03-25 | 2015-07-08 | 郑州大学 | A kind of fixture for studying hard brittle material bi-directional compression loading problem |
| TW201614205A (en) * | 2014-10-15 | 2016-04-16 | Iner Aec Executive Yuan | Gripping and auxiliary alignment deice for valve rod stress sensor |
| CN206725134U (en) * | 2017-03-15 | 2017-12-08 | 北京中航兴盛测控技术有限公司 | High-performance torque sensor based on Sputtering Thinfilm Technology |
| CN207880185U (en) * | 2017-12-27 | 2018-09-18 | 核动力运行研究所 | A kind of dual-gripper column type jaw type thrust pickup |
-
2017
- 2017-12-27 CN CN201711441542.2A patent/CN109973709A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150082902A1 (en) * | 2013-09-26 | 2015-03-26 | Fisher Controls International Llc | Valve stem connector with integrated stem force measurement |
| CN103969118A (en) * | 2014-05-16 | 2014-08-06 | 北京航空航天大学 | Novel composite material unnotched compression test fixture |
| TW201614205A (en) * | 2014-10-15 | 2016-04-16 | Iner Aec Executive Yuan | Gripping and auxiliary alignment deice for valve rod stress sensor |
| CN204461893U (en) * | 2015-03-25 | 2015-07-08 | 郑州大学 | A kind of fixture for studying hard brittle material bi-directional compression loading problem |
| CN206725134U (en) * | 2017-03-15 | 2017-12-08 | 北京中航兴盛测控技术有限公司 | High-performance torque sensor based on Sputtering Thinfilm Technology |
| CN207880185U (en) * | 2017-12-27 | 2018-09-18 | 核动力运行研究所 | A kind of dual-gripper column type jaw type thrust pickup |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804339A (en) * | 2020-06-16 | 2021-12-17 | 国核电站运行服务技术有限公司 | Force measuring device for measuring axial force of round rod |
| CN113804339B (en) * | 2020-06-16 | 2023-12-19 | 国核电站运行服务技术有限公司 | Force measuring device for measuring axial force of round rod |
| CN113432865A (en) * | 2021-06-04 | 2021-09-24 | 苏州热工研究院有限公司 | Nuclear power plant valve fault diagnosis mechanical sensor and using method thereof |
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