CN204302228U - The probe retracting device that a kind of steam generator heat-transfer pipe vortex detects - Google Patents
The probe retracting device that a kind of steam generator heat-transfer pipe vortex detects Download PDFInfo
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- CN204302228U CN204302228U CN201420857545.XU CN201420857545U CN204302228U CN 204302228 U CN204302228 U CN 204302228U CN 201420857545 U CN201420857545 U CN 201420857545U CN 204302228 U CN204302228 U CN 204302228U
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- probe
- clutch
- transfer pipe
- pipe vortex
- steam generator
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model relates to the probe retracting device that a kind of steam generator heat-transfer pipe vortex detects, comprise reel transmission case, reel assembly, locking nut and probe disc, reel assembly is fixed on the power transmission shaft of reel transmission case by locking nut, and probe disc is fixed on reel assembly; In heat-transfer pipe vortex gathers, the probe that heat-transfer pipe vortex detects is wrapped on probe disc.The utility model adopts double clutch construction, ensures that eddy current probe can closely be wrapped on probe disc all the time in advance and process of pulling back, can not scatter from probe disc; Adopt frictional drive structure, can overload protective function be played to probe and equipment; Adjusting bolt is adopted to change butterfly spring decrement, can step-less adjustment overload breakaway torque within the specific limits; According to service condition, overload breakaway torque can be changed easily in real time, overload protection carried out to equipment.
Description
Technical field
The present invention relates to nuclear engineering technical field, be specifically related to the probe retracting device that a kind of steam generator heat-transfer pipe vortex detects.
Background technology
In nuclear power station, steam generator heat-transfer pipe is the capital equipment of nuclear power station and the pressure boundary of reactor cooling system, and its pressure boundary area accounts for more than 70% of primary Ioops border.Because heat-transfer pipe is the light-wall pipe of about 1mm, and operating condition is very severe, so the heat-transfer pipe link that to be primary Ioops pressure boundary the weakest always.International nuclear power operational data statistics shows, be about more than 50% all there is heat-transfer pipe breakage in various degree with steam generator.Domestic and international each nuclear power country all regularly implements preservice inspection and inservice inspection to steam generator heat-transfer pipe.
Complete steam generator heat-transfer pipe vortex inspection, eddy current probe needs, first through heat-transfer pipe, heat-transfer pipe to be carried out to the collection of eddy current signal in probe pulls back process.Therefore need a kind of device, can advance at eddy current probe and pull back in process, can ensure all the time to pop one's head in closely be wound around on the apparatus.
Summary of the invention
The object of this invention is to provide the probe retracting device that a kind of steam generator heat-transfer pipe vortex detects, can advance at eddy current probe and pull back in process, can ensure that probe is closely wrapped on device all the time.
The present invention realizes like this, the probe retracting device that a kind of steam generator heat-transfer pipe vortex detects, comprise reel transmission case, reel assembly, locking nut and probe disc, reel assembly is fixed on the power transmission shaft of reel transmission case by locking nut, and probe disc is fixed on reel assembly; In heat-transfer pipe vortex gathers, the probe that heat-transfer pipe vortex detects is wrapped on probe disc.
Described reel transmission case comprises clutch shaft, pinion, large clutch, casing, little clutch, gear wheel, friction wheel axle;
Described large clutch is embedded in casing, and little clutch is embedded in described pinion inwall interference fit; Clutch shaft and friction wheel axle are by being fixed in casing; Little clutch sleeve is on described clutch shaft; Large clutch shell-like is outside described pinion; Described clutch shaft is driven by external drive mechanism and rotates;
Described gear wheel is sleeved on described friction wheel axle, and described gear wheel engages with pinion, and gear wheel is rotated by frictional force drives friction wheel axle, and described friction wheel axle is on the power transmission shaft of reel transmission case.
Also comprise butterfly spring, friction plate, the bolt on suit friction wheel axle; Two friction plates are pressed in gear wheel both sides respectively; Described bolt is screwed on described casing; Described butterfly spring one end holds out against a friction plate, other end puller bolt.
Described clutch shaft and little clutch are killed, and pinion and large clutch unclamp, and described gear wheel, friction plate and friction wheel axle exist frictional force.
Described clutch shaft and little clutch unclamp, and pinion and large clutch are killed, and described gear wheel, friction plate and friction wheel axle exist frictional force.
Beneficial effect of the present invention:
(1) the present invention adopts double clutch construction, ensures that eddy current probe can closely be wrapped on probe disc all the time in advance and process of pulling back, can not scatter from probe disc.
(2) the present invention adopts frictional drive structure, can play overload protective function to probe and equipment.
(3) the present invention adopts adjusting bolt to change butterfly spring decrement, can step-less adjustment overload breakaway torque within the specific limits.According to service condition, overload breakaway torque can be changed easily in real time, overload protection carried out to equipment.
Accompanying drawing explanation
Fig. 1 is the probe retracting device schematic diagram that steam generator heat-transfer pipe vortex detects;
Fig. 2 is the reel transmission case schematic diagram of the probe retracting device that steam generator heat-transfer pipe vortex detects;
In figure: 1. reel transmission case; 2. locking nut; 3. reel assembly; 4. probe disc; 101. belt; 102. belt pulley; 103. clutch shaft; 104. pinion; 105. large clutches; 106. casing; 107. little clutches; 108. butterfly spring; 109. friction plate; 110. gear wheel; 111. friction wheel axle; 112. bolt.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail:
The probe retracting device that steam generator heat-transfer pipe vortex of the present invention detects, comprises reel transmission case 1, reel assembly 3, locking nut 2 and probe disc 4, as shown in Figure 1.Use locking nut 2 to be fixed on by reel assembly 3 on the power transmission shaft of reel transmission case 1, probe disc 4 is fixed on reel assembly 3.In heat-transfer pipe vortex gathers, eddy current probe is wrapped on probe disc 4.
Described reel transmission case 1 comprises belt 101, belt pulley 102, clutch shaft 103, pinion 104, large clutch 105, casing 106, little clutch 107, butterfly spring 108, friction plate 109, gear wheel 110, friction wheel axle 111, bolt 112, as shown in Figure 2.
Clutch shaft 103 and friction wheel axle 111 are by bearing static housing 106; Clutch shaft 103 is set with little clutch 107;
Pinion 104 is sleeved on outside little clutch 107, and with its interference fit; Large clutch 105 is sleeved on outside pinion 104, its outer wall and cabinet wall interference fit; Clutch shaft 103 is set with belt pulley 102, belt pulley 102 outer felt is around belt 101; Belt 101 is connected with external impetus power shaft;
Friction wheel axle 111 is set with gear wheel 110, is pressed with friction plate 109 in gear wheel 110 both sides; Butterfly spring 108 overlaps on friction wheel axle 111, and one end holds out against friction plate 109, other end puller bolt 112; Bolt 112 is screwed on casing 106, adjusts the degree of tightness of butterfly spring 108 by screwing bolt 112;
When eddy current probe advance or pullback motion, the clockwise or counterclockwise movement of belt 101 meeting respective drive belt pulley 102, thus drive the rotation of clutch shaft 103.Two pieces of friction plates 109, gear wheel 110 and friction wheel axle 111 compress by butterfly spring 108, by frictional force by power transmission on friction wheel axle 111, by adjusting bolt 112 change butterfly spring 108 decrement can within the specific limits stageless setting overload skid moment of torsion.
Little clutch 103 is embedded in pinion 104 inwall, and large clutch 105 is embedded in casing 106.When eddy current probe is pulled back, clutch shaft 103 turns clockwise, and clutch shaft 103 and little clutch 107 are killed, and drives pinion 104 to turn clockwise.Now, pinion 104 and large clutch 105 unclamp, and promote gear wheel 110 and are rotated counterclockwise.Promoted the rotation of friction wheel axle 111 by the frictional force of gear wheel 110, friction plate 109 and friction wheel axle 111, probe disc is pulled back probe.When eddy current probe advances, clutch shaft 103 is rotated counterclockwise, and clutch shaft 103 and little clutch 107 unclamp, and clutch shaft 103 dallies.Eddy current probe can turn clockwise by drawing friction wheel shaft 111 in advance process, promotes gear wheel 110 turn clockwise by the frictional force of gear wheel 110, friction plate 109 and friction wheel axle 111.In addition, the gear wheel 110 dextrorotation change of team makes pinion 104 and large clutch 105 kill, and causes gear wheel 110 to rotate clockwise.Now, probe is closely wrapped on probe disc to rely on the moment of friction of friction plate 109, gear wheel 110 and friction wheel axle 111 to ensure, can prevent again probe from scattering from probe disc.
Adopt double clutch construction.When eddy current probe advances, probe will be scattered from probe disc because of the inertia of probe disc.When eddy current probe is pulled back, probe can be wrapped on probe disc in time, and can ensure that probe is wound around closely.
Adopt the structure of frictional drive.Adopt frictional drive can ensure the safety of eddy current probe, when pulling force is excessive, friction wheel axle and friction plate can skid, in order to avoid break eddy current probe.
Changed the decrement of butterfly spring 108 by the position of adjusting bolt 112, the moment of torsion that overload is skidded can be changed within the specific limits.
Claims (5)
1. the probe retracting device of a steam generator heat-transfer pipe vortex detection, it is characterized in that: comprise reel transmission case, reel assembly, locking nut and probe disc, reel assembly is fixed on the power transmission shaft of reel transmission case by locking nut, and probe disc is fixed on reel assembly; In heat-transfer pipe vortex gathers, the probe that heat-transfer pipe vortex detects is wrapped on probe disc.
2. according to the probe retracting device that steam generator heat-transfer pipe vortex according to claim 1 detects, it is characterized in that: described reel transmission case comprises clutch shaft, pinion, large clutch, casing, little clutch, gear wheel, friction wheel axle;
Described large clutch is embedded in casing, and little clutch is embedded in described pinion inwall interference fit; Clutch shaft and friction wheel axle are by being fixed in casing; Little clutch sleeve is on described clutch shaft; Large clutch shell-like is outside described pinion; Described clutch shaft is driven by external drive mechanism and rotates;
Described gear wheel is sleeved on described friction wheel axle, and described gear wheel engages with pinion, and gear wheel is rotated by frictional force drives friction wheel axle, and described friction wheel axle is on the power transmission shaft of reel transmission case.
3. according to the probe retracting device that steam generator heat-transfer pipe vortex according to claim 2 detects, it is characterized in that: also comprise butterfly spring, friction plate, the bolt on suit friction wheel axle; Two friction plates are pressed in gear wheel both sides respectively; Described bolt is screwed on described casing; Described butterfly spring one end holds out against a friction plate, other end puller bolt.
4. according to the probe retracting device that steam generator heat-transfer pipe vortex according to claim 3 detects, it is characterized in that: described clutch shaft and little clutch are killed, pinion and large clutch unclamp, and described gear wheel, friction plate and friction wheel axle exist frictional force.
5. according to the probe retracting device that steam generator heat-transfer pipe vortex according to claim 3 detects, it is characterized in that: described clutch shaft and little clutch unclamp, pinion and large clutch are killed, and described gear wheel, friction plate and friction wheel axle exist frictional force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420857545.XU CN204302228U (en) | 2014-12-30 | 2014-12-30 | The probe retracting device that a kind of steam generator heat-transfer pipe vortex detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420857545.XU CN204302228U (en) | 2014-12-30 | 2014-12-30 | The probe retracting device that a kind of steam generator heat-transfer pipe vortex detects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204302228U true CN204302228U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420857545.XU Active CN204302228U (en) | 2014-12-30 | 2014-12-30 | The probe retracting device that a kind of steam generator heat-transfer pipe vortex detects |
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| CN (1) | CN204302228U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932470A (en) * | 2015-12-31 | 2017-07-07 | 核动力运行研究所 | A kind of probe drive device for steam generator heat-transfer pipe vortex detection |
| CN106932471A (en) * | 2015-12-31 | 2017-07-07 | 核动力运行研究所 | A kind of probe drive device for steam generator heat-transfer pipe vortex detection |
| CN108267503A (en) * | 2016-12-30 | 2018-07-10 | 核动力运行研究所 | A kind of conflux loop device for steam generator heat-transfer pipe vortex signal transmission |
-
2014
- 2014-12-30 CN CN201420857545.XU patent/CN204302228U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932470A (en) * | 2015-12-31 | 2017-07-07 | 核动力运行研究所 | A kind of probe drive device for steam generator heat-transfer pipe vortex detection |
| CN106932471A (en) * | 2015-12-31 | 2017-07-07 | 核动力运行研究所 | A kind of probe drive device for steam generator heat-transfer pipe vortex detection |
| CN106932470B (en) * | 2015-12-31 | 2023-08-18 | 核动力运行研究所 | Probe transmission device for vortex detection of heat transfer tube of steam generator |
| CN106932471B (en) * | 2015-12-31 | 2023-12-15 | 核动力运行研究所 | Probe driving device for vortex detection of heat transfer tube of steam generator |
| CN108267503A (en) * | 2016-12-30 | 2018-07-10 | 核动力运行研究所 | A kind of conflux loop device for steam generator heat-transfer pipe vortex signal transmission |
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