CN203658309U - Pushing-pulling force limiter of vortex detection probe - Google Patents
Pushing-pulling force limiter of vortex detection probe Download PDFInfo
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- CN203658309U CN203658309U CN201320796776.XU CN201320796776U CN203658309U CN 203658309 U CN203658309 U CN 203658309U CN 201320796776 U CN201320796776 U CN 201320796776U CN 203658309 U CN203658309 U CN 203658309U
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- 239000000523 sample Substances 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 title abstract description 4
- 238000000034 method Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009659 non-destructive testing Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000000386 athletic effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
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Abstract
The utility model belongs to a limiter and particularly relates to a pushing-pulling force limiter of a vortex detection probe. The pushing-pulling force limiter comprises a comparison device, wherein one end of the comparison device is communicated with input signals, and the other end of the comparison device outputs signals to a motor control unit; the motor control unit receives the input signals of the comparison device and also receives signals from a motor; simultaneously, the motor control unit is also communicated with a computer and is controlled by the computer; the signals from the motor are feedback signals formed after the signal of the motor is encoded; output signals of the motor control unit are transferred to a motor driver; after receiving the input signals, the motor driver generates two paths of completely-same output signals, wherein one path of output signals is transmitted to the motor, and the other path of output signals is transmitted to a comparator as feedback; the operating condition of the motor is detected by the vortex detection probe in real time, and simultaneously related information of the motor is also encoded and fed back to the motor control unit. The pushing-pulling force limiter has the effects that the use safety of the probe is guaranteed and the practicability is improved.
Description
Technical field
This novel limiter that belongs to, is specifically related to a kind of eddy current probe and pushes away pull out force limiter.
Background technology
EDDY CURRENT is one of important method in Non-Destructive Testing, has a wide range of applications in the many fields including the Non-Destructive Testing of used in nuclear power station thin walled tube (steam generator heat-transfer pipe, neutron flux measurement finger sleeve, condenser titanium pipe etc.).
In the time that thin walled tube is carried out to Eddy Current Nondestructive Testing, need to eddy current probe be pushed by vortex probe pushing pulling device to the position of specifying in thin walled tube, then when probe is pulled back, carry out the data acquisition of thin walled tube eddy current signal, realize the EDDY CURRENT of thin walled tube.Because used in nuclear power station thin walled tube is mostly U-shaped pipe (comprising the little bend pipe of some), when probe moves in thin walled tube, resistance can constantly change, and the movement velocity of probe in pipe is very high (conventionally adopts 500 mm/second, reach sometimes 1500 mm/second), limit if do not push away the size of pull out force to popping one's head in, be easy to cause the damage of probe, thereby greatly reduced the serviceable life of probe, when serious, also can cause the head fracture of probe, cause foreign matter risk.This patent is exactly that the size that pushes away pull out force to popping one's head in realizes volitional check, thereby reaches the object of effective protection probe.
Summary of the invention
This novel object is for prior art defect, provides a kind of eddy current probe that can strictly control strength size to push away pull out force limiter.
This novel technical scheme is as follows: a kind of suitable eddy current probe pushes away pull out force limiter, comprise the comparison means as input end, one end of this comparison means is communicated with input signal, the other end outputs signal to motor control unit, motor control unit receives outside the input signal from comparison means, also receive the signal from motor, motor control unit is also communicated with computing machine simultaneously, and be subject to the control of computing machine, the described signal from motor refers to the feedback signal that motor signal forms after coding, motor control unit combines computer control signal, after the input signal of comparison means and the signal from motor, form unique output signal, this output signal is transmitted to motor driver, motor driver produces the identical output signal of two-way after receiving input signal, one tunnel output signal is fed to motor, for controlling the operation of motor, another road output signal is fed to comparer as feedback, motor is in driven process, the ruuning situation of motor is detected in real time by eddy current probe, the relevant information of motor is also encoded and feeds back to motor control unit simultaneously.
The suitable eddy current probe of one as above pushes away pull out force limiter, wherein, described comparison means comprises comparer and relay, the positive input terminal of comparer is communicated with setting value input by resistance, this positive input terminal is also communicated with ground by another resistance, the negative input end of comparer is communicated with the output terminal of motor driver, and the output terminal of comparer is connected with relay, and the output terminal of relay is connected with electrode control module.
This novel effect is: 1., in the time that detection probe runs into larger resistance (larger than the current value of setting) in motion process, the athletic meeting of probe stops immediately, thereby guarantees the use safety of probe; 2. according to the actual conditions that detect, can adjust or change and set the size of current value, reach eddy current probe and push away the practicality of pull out force limiter.
Accompanying drawing explanation
Fig. 1 pushes away the structural representation of pull out force limiter for this novel eddy current probe providing.
In figure: 1. comparison means.
Embodiment
As shown in Figure 1, a kind of suitable eddy current probe pushes away pull out force limiter, comprise the comparison means 1 as input end, one end of this comparison means 1 is communicated with input signal, the other end outputs signal to motor control unit, and motor control unit receives outside the input signal from comparison means 1, also receives the signal from motor, motor control unit is also communicated with computing machine simultaneously, and is subject to the control of computing machine.The described signal from motor refers to the feedback signal that motor signal forms after coding.Motor control unit combines computer control signal, after the input signal of comparison means 1 and the signal from motor, forms unique output signal, and this output signal is transmitted to motor driver.Motor driver produces the identical output signal of two-way after receiving input signal, and a road output signal is fed to motor, and for controlling the operation of motor, another road output signal is fed to comparer as feedback.Motor is in driven process, and the ruuning situation of motor is detected in real time by eddy current probe, and the relevant information of motor is also encoded and feeds back to motor control unit simultaneously.
Described comparison means 1 comprises comparer and relay, the positive input terminal of comparer is communicated with setting value input by resistance, this positive input terminal is also communicated with ground by another resistance, the negative input end of comparer is communicated with the output terminal of motor driver, the output terminal of comparer is connected with relay, and the output terminal of relay is connected with electrode control module.
The use procedure of this novel device is roughly as follows: in the time that thin walled tube is carried out to Eddy Current Nondestructive Testing, this pushes away pull out force limiter and first detects the current surveillance signal of motor driver output, and current signal is converted into voltage signal.When the current surveillance signal detecting is than the current signal (being provided by motor control unit) hour of setting, the state of control panel relay output signal is constant, and motor continues motion; In the time that the current surveillance signal detecting is larger than the current signal of setting, be that eddy current probe pushes away the permissible value that pull out force has exceeded setting, the state of control panel relay output signal changes, and by motor control unit, this signal is transferred to computing machine, computing machine receives after the signal that current of electric overflows, send the instruction of motor stop motion to motor control unit, carry out shut-down operation by motor driver, motor movement stops immediately, thereby realizes the restriction that eddy current probe is pushed away to pull out force size.
Eddy current probe pushes away the automatic EDDY CURRENT of pull out force limiter for nuclear power station thin walled tube, to guarantee the safe handling of probe.
Claims (2)
1. a suitable eddy current probe pushes away pull out force limiter, it is characterized in that: comprise the comparison means (1) as input end, one end of this comparison means (1) is communicated with input signal, the other end outputs signal to motor control unit, motor control unit receives outside the input signal from comparison means (1), also receive the signal from motor, motor control unit is also communicated with computing machine simultaneously, and be subject to the control of computing machine, the described signal from motor refers to the feedback signal that motor signal forms after coding, motor control unit combines computer control signal, after the input signal of comparison means (1) and the signal from motor, form unique output signal, this output signal is transmitted to motor driver, motor driver produces the identical output signal of two-way after receiving input signal, one tunnel output signal is fed to motor, for controlling the operation of motor, another road output signal is fed to comparer as feedback, motor is in driven process, the ruuning situation of motor is detected in real time by eddy current probe, the relevant information of motor is also encoded and feeds back to motor control unit simultaneously.
2. the suitable eddy current probe of one as claimed in claim 1 pushes away pull out force limiter, it is characterized in that: described comparison means (1) comprises comparer and relay, the positive input terminal of comparer is communicated with setting value input by resistance, this positive input terminal is also communicated with ground by another resistance, the negative input end of comparer is communicated with the output terminal of motor driver, the output terminal of comparer is connected with relay, and the output terminal of relay is connected with electrode control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320796776.XU CN203658309U (en) | 2013-12-05 | 2013-12-05 | Pushing-pulling force limiter of vortex detection probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320796776.XU CN203658309U (en) | 2013-12-05 | 2013-12-05 | Pushing-pulling force limiter of vortex detection probe |
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| Publication Number | Publication Date |
|---|---|
| CN203658309U true CN203658309U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320796776.XU Expired - Lifetime CN203658309U (en) | 2013-12-05 | 2013-12-05 | Pushing-pulling force limiter of vortex detection probe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931868A (en) * | 2015-12-30 | 2017-07-07 | 核动力运行研究所 | A kind of eddy current probe position detecting device and method based on magnetic sensor |
| CN113899807A (en) * | 2021-08-25 | 2022-01-07 | 中广核检测技术有限公司 | Automatic eddy current inspection device for thimble tube |
-
2013
- 2013-12-05 CN CN201320796776.XU patent/CN203658309U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931868A (en) * | 2015-12-30 | 2017-07-07 | 核动力运行研究所 | A kind of eddy current probe position detecting device and method based on magnetic sensor |
| CN113899807A (en) * | 2021-08-25 | 2022-01-07 | 中广核检测技术有限公司 | Automatic eddy current inspection device for thimble tube |
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| GR01 | Patent grant | ||
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Granted publication date: 20140618 |
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| CX01 | Expiry of patent term |