CN109884124A - A kind of caliberating device of immersion method crack propagation signal - Google Patents
A kind of caliberating device of immersion method crack propagation signal Download PDFInfo
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- CN109884124A CN109884124A CN201910134574.0A CN201910134574A CN109884124A CN 109884124 A CN109884124 A CN 109884124A CN 201910134574 A CN201910134574 A CN 201910134574A CN 109884124 A CN109884124 A CN 109884124A
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Abstract
The invention discloses a kind of caliberating devices of immersion method crack propagation signal, including pedestal, metallic conductor, fan, vacuum flask and the temperature regulating device that can be set and show the temperature of heat preservation water in bottle and alarm when the temperature of water is more than set temperature, vacuum flask includes body and the bottle cap positioned at body top, the temperature sensor for measuring body water temperature and the resistive heater for heating to the water in body are provided on body inner wall, temperature sensor, resistive heater and fan connect with temperature regulating device and control work by temperature regulating device.The present invention accelerates the localization process of pertinent instruments, for verifying crack monitoring instrumental function and precision provide it is a kind of efficiently, simple, efficiently caliberating device, disclose the relationship between 304 steel crack lengths of one kind and measurement voltage signal, be conducive to the scope of application for accelerating to promote instrument, have the advantages that structure is simple, performance is stable, Reusability and intelligent control.
Description
Technical field
The invention belongs to nuclear power structure safety analysis technique field, it is specifically related to a kind of immersion method crack propagation signal
Caliberating device.
Background technique
In nuclear power field, chief part is in high temperature and pressure water environment, due to stress corrosion at welding point
It is easy to produce crackle, monitoring crack length and to evaluate the machine components service life be to save nuclear power cost, reduce Nuclear Safety accident hair
Raw important research technical field.At abroad, MTS company has developed the crackle measuring system based on direct current potential drop method for tired
The measurement of labor crack propagation, MATELECT company have developed a kind of monitoring crack growth instrument using pulse direct current technology for monitoring
Test button crack propagation in mechanical test.But due to technical know-how etc., external these test equipment technology introductions money
Expect relatively fewer.Although also there is correlative study in the country but due to history, the country is in terms of desk-top high precision measuring instrument
It has a long way to go with world level, market is still monopolized by the foreign well-knowns manufacturer such as An Jielun, Tyke at present, and instrument price is high, is caused
Keep crackle measuring system cost high.For technology blockage of breaking up monopoly, the price of pertinent instruments is reduced, realizes the state of instrument
Productionization, research and development integrated level is high, precision is high, crack monitoring instrument at low cost is extremely important.
Currently, most of monitoring of crackle of nuclear power part uses direct current potential drop method, is measured and tried with direct current potential drop method
The crack length of sample is substantially the variation for measuring sample crackle both end voltage signal, when sample both ends add constant direct current
When stream, the voltage drop at crackle both ends is gradually increased with the growth of crackle, and the voltage signal of crack propagation is microvolt grade signal.Cause
This, needs a voltage letter corresponding with actual crack length in the research and development of the crack monitoring instrument based on direct current potential drop method
Number as research and development instrument signal source, carry out the extension voltage signal of On Crack Propagation length to quantify to demarcate.But due to nuclear power
The rate of rise of the crackle of the nuclear power part in field is very slow, then tens days short, the long then more than ten years, in instrument R&D process in fact
It tests environment and realizes that the period is too long, signal source when being not appropriate for as research and development test equipment.Therefore, it is based on direct current at home at present
The development of the crack monitoring instrument of fall-of-potential method comes there is no stable performance, Reusability and effective crack propagation signal is obtained
Quantization calibration.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art described above, a kind of immersion method crack propagation signal is provided
Caliberating device, the development for the domestic crack monitoring instrument based on direct current potential drop method provide effective crack propagation signal
Quantization calibration, have the advantages that structure is simple, performance is stable, can Reusability and intelligent control, greatly reduce crackle supervise
Survey the manufacturing cost of instrument.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of calibration dress of immersion method crack propagation signal
Set, it is characterised in that: including pedestal, metallic conductor, fan, vacuum flask and can set and show heat preservation water in bottle temperature and
The temperature regulating device alarmed when the temperature of water is more than set temperature, the vacuum flask include body and positioned at body top
The lower part of bottle cap, the body is arranged in pedestal, and the fan is arranged in the bottom of body and when the temperature of water is more than setting
It can radiate to body when temperature, the metallic conductor is arranged in body and impregnates in water, the metallic conductor
Both ends are respectively connected with electric current input lead and voltage signal output lead, are provided in the bottom interior wall of the body for measuring
First temperature sensor of body lower part water temperature is provided with for measuring body top water temperature in the upper inside wall of the body
Second temperature sensor is provided with the first adding thermal resistance for the water heating to body lower part in the bottom interior wall of the body
Silk, is provided with the second resistive heater for the water heating to body top in the upper inside wall of the body, and described first
Temperature sensor, second temperature sensor, the first resistive heater, the second resistive heater and fan with the temperature regulating device
Connect and work is controlled by temperature regulating device.
The caliberating device of above-mentioned a kind of immersion method crack propagation signal, it is characterised in that: the caliberating device is applied to
Calibration of the crack monitoring instrument to the crack propagation signal of 304 steel curved beams, the crack monitoring instrument are based on direct current potential drop
The crack monitoring instrument of method.
The caliberating device of above-mentioned a kind of immersion method crack propagation signal, it is characterised in that: the temperature regulating device includes master
Control module, for the setting module of the heating temperature of water in body, the display module for showing water temperature to be arranged, is used to work as body
Middle water temperature be more than set temperature when alarm alarm module, the reset for returning to original state main control module data
Module and power supply module for being powered for each power unit of system, first temperature sensor, second temperature sensing
Device, setting module and reseting module are connect with the input terminal of main control module, the display module, alarm module, the first heating
Resistance wire, the second resistive heater and fan are connect with the output end of main control module.
The caliberating device of above-mentioned a kind of immersion method crack propagation signal, it is characterised in that: the main control module includes micro-
Processing chip and four capacitances are capacitor C22, capacitor C23, capacitor C24, the capacitor C25 of 100nF, the micro-chip processor
The micro-chip processor of STM32F103C8T6 for model, the both ends of the capacitor C22 respectively with the end VDD-1 of micro-chip processor
Connected with the end VSS-1 and the end VSS-1 be grounded, the both ends of the capacitor C23 respectively with the end VDD-2 of micro-chip processor and VSS-2
End connection and the end VSS-2 be grounded, the both ends of the capacitor C24 connect respectively with the end VDD-3 of micro-chip processor and the end VSS-3 and
The end VSS-3 ground connection, the both ends of the capacitor C25 are connect with the end VDDA of micro-chip processor and the end VSSA respectively and VSSA is terminated
Ground, the end VDD-1, the end VDD-2, the end VDD-3 and the end VDDA of the micro-chip processor are respectively connected to the 3.3V of power supply module offer
Voltage；The micro-chip processor and the first resistive heater, the second resistive heater and fan are all connected with and by micro-chip processor
Control work；
The capacitor C1 that the reseting module includes the resistance R1 that a resistance value is 10K Ω and a capacitance is 100nF, institute
One end of one end, capacitor C1 for stating resistance R1 is connect with No. 7 pins of micro-chip processor, another termination of the capacitor C1
Ground, the 3.3V voltage that the other end access power supply module of the resistance R1 provides.
The caliberating device of above-mentioned a kind of immersion method crack propagation signal, it is characterised in that: the alarm module includes mentioning
Show water temperature beyond set temperature and makes a sound the buzzer circuit of alarm and prompt water temperature is gone forward side by side portable lighter light beyond set temperature
The LED circuit of alarm；The buzzer circuit include a resistance value be 4.7K Ω resistance R7, a resistance value be 10K Ω electricity
Resistance R6, a buzzer and a model are the triode of S8050, one end of the resistance R7, one end of resistance R6 and three poles
The base stage of pipe is all connected with, and the other end of the resistance R6 and the emitter of triode are connected and be grounded, the current collection of the triode
The connection of the cathode of pole and buzzer, the 3.3V voltage that the anode access power supply module of the buzzer provides, the resistance R7's
The other end is connected by No. 2 pins of row's needle and micro-chip processor；
The LED circuit include light emitting diode H2, light emitting diode H3, light emitting diode H4, light emitting diode H5 and
Four resistance values are resistance R12, resistance R13, resistance R14 and the resistance R15, the resistance R12, resistance R13, resistance of 1K Ω
The 3.3V voltage that one end of R14 and resistance R15 are all connected with and connecting pin access power supply module provides, the resistance R12's is another
End is connect with one end of light emitting diode H2, and the other end of the resistance R13 is connect with one end of light emitting diode H3, the electricity
The other end of resistance R14 is connect with one end of light emitting diode H4, the other end of the resistance R15 and one end of light emitting diode H5
The other end of connection, the light emitting diode H2 is connected by No. 17 pins of row's needle and micro-chip processor, the light-emitting diodes
The other end of pipe H3 is connected by No. 16 pins of row's needle and micro-chip processor, and the other end of the light emitting diode H4 passes through row
The connection of No. 15 pins of needle and micro-chip processor, the other end of the light emitting diode H5 is by arranging the 14 of needle and micro-chip processor
The connection of number pin.
The caliberating device of above-mentioned a kind of immersion method crack propagation signal, it is characterised in that: the setting module includes pressing
Key Key1, key Key2, No. 1 pin of key Key3 and key Key3, the key Key1 and No. 3 pins are grounded, described
No. 2 pins and No. 4 pins of key Key1 are connect with No. 7 pins of micro-chip processor, No. 1 pin of the key Key2 and
No. 3 pin ground connection, No. 2 pins and No. 4 pins of the key Key2 are connect with No. 38 pins of micro-chip processor, described to press
No. 1 pin and No. 3 pins of key Key3 is grounded, No. 2 pins and No. 4 pins of the key Key3 with micro-chip processor
No. 37 pin connections, No. 1 pin of the key Key4 and No. 3 pin ground connection, No. 2 pins and No. 4 pins of key Key4 are equal
It is connect with No. 34 pins of micro-chip processor；
It is the displacement buffering device of 74HC595, two capacitors that the display module, which includes four laser-emitting diodes, two models,
Value is the capacitor C27 and capacitor C28 of equal 100nF, two resistance values are that the resistance R21 and resistance R22 of 10K Ω, four resistance values are equal
For the resistance 23 of 120 Ω, resistance R24, resistance R25 and resistance R26, four models be the triode V3 of S8550, triode V4,
Triode V5, triode V6 and four resistance values are the resistance R27 of 4.7K Ω, resistance R28, resistance R29 and resistance R30, described
No. 14 pins of two displacement buffering devices pass through row's needle and No. 13 pins of micro-chip processor connect, described two displacement bufferings
No. 12 pins of device pass through row's needle and No. 12 pins of micro-chip processor connect, No. 11 pins of described two displacement buffering devices
Connected by No. 11 pins of row's needle and micro-chip processor；No. 16 pins of one of them displacement buffering device access power supply
3.3V voltage that module provides and connect with one end of capacitor C27, the other end of the capacitor C27 is grounded, described in one of them
8 pins of displacement buffering device and No. 13 pins are grounded, and No. 10 pins of one of them displacement buffering device are with resistance R21's
The 3.3V voltage that the other end access power supply module of one end connection and resistance R21 provide, one of them displacement buffering device
15 pins are connect with No. 11 pins of four laser-emitting diodes, 1 pin is connect with No. 7 pins of four laser-emitting diodes, 2 pins with
No. 4 pins connection of four laser-emitting diodes, 3 pins are connect with No. 2 pins of four laser-emitting diodes, 4 pins and four LED are aobvious
Show No. 1 pin connection of pipe, 5 pins connect with No. 10 pins of four laser-emitting diodes, 6 pins and four laser-emitting diodes 5
The connection of number pin, 7 pins are connect with No. 3 pins of four laser-emitting diodes；No. 16 pins of another displacement buffering device connect
The 3.3V voltage of power supply module offer is provided and is connect with one end of capacitor C28, the other end ground connection of the capacitor C28, another
No. 8 pins and No. 13 pins of the displacement buffering device are grounded, No. 10 pins and resistance of another displacement buffering device
The 3.3V voltage that one end of R22 connects and the other end of resistance R22 access power supply module provides, another described displacement buffering device
No. 15 pins connect with one end of resistance R27, the other end of the resistance R27 is connect with the base stage of triode V3, described three
The collector of pole pipe V3 is connect with No. 12 pins of four laser-emitting diodes, the emitter of the triode V3 and the one of resistance R23
End connection, No. 1 pin of another displacement buffering device connect with one end of resistance R28, the other end of the resistance R28 and
The base stage of triode V4 connects, and the collector of the triode V4 is connect with No. 9 pins of four laser-emitting diodes, three pole
The emitter of pipe V4 is connect with one end of resistance R24, one end of No. 2 pins and resistance R29 of another displacement buffering device
Connection, the other end of the resistance R29 are connect with the base stage of triode V5, and the collector of the triode V5 and four LED are aobvious
Show No. 8 pins connection of pipe, the emitter of the triode V5 is connect with one end of resistance R25, another described displacement buffering
No. 3 pins of device are connect with one end of resistance R30, and the other end of the resistance R30 is connect with the base stage of triode V6, and described three
The collector of pole pipe V6 is connect with No. 6 pins of four laser-emitting diodes, the emitter of the triode V6 and the one of resistance R26
End connection, the other end of the resistance R23, the other end of resistance R24, the other end of the other end of resistance R25 and resistance R26 are equal
Access the 3.3V voltage that power supply module provides.
A kind of caliberating device of above-mentioned immersion method crack propagation signal, it is characterised in that: first temperature sensor
It is the temperature sensor that model is DS18B20 with second temperature sensor, the quantity of first temperature sensor is three
And be uniformly arranged on the one week inner wall in bottom of body, first temperature sensor is respectively temperature sensor IC1, temperature biography
Sensor IC2 and temperature sensor IC3, the second temperature sensor be temperature sensor IC4, the temperature sensor IC1 with
No. 14 pins of micro-chip processor connect, and the other end of the light emitting diode H5 is drawn by No. 14 of row's needle and micro-chip processor
Foot connect and can be judged by the light on and off of light emitting diode H5 the water temperature at the position temperature sensor IC1 whether overtemperature, it is described
The connection of No. 15 pins of temperature sensor IC2 and micro-chip processor, the other end of the light emitting diode H4 by row's needle with it is micro-
No. 15 pins of processing chip connect and can judge the water at the position temperature sensor IC2 by the light on and off of light emitting diode H4
Temperature whether overtemperature, No. 16 pins of the temperature sensor IC3 and micro-chip processor connect, and the light emitting diode H3's is another
End is connected by No. 16 pins of row's needle and micro-chip processor and can judge temperature sensing by the light on and off of light emitting diode H3
Water temperature at the position device IC3 whether overtemperature, No. 17 pins of the temperature sensor IC4 and micro-chip processor connect, the hair
The other end of optical diode H2 is by the connection of No. 17 pins of row's needle and micro-chip processor and can pass through the bright of light emitting diode H2
Go out judge water temperature at the position temperature sensor IC4 whether overtemperature.
A kind of caliberating device of above-mentioned immersion method crack propagation signal, it is characterised in that: first resistive heater
Quantity be three and to be uniformly arranged on the one week inner wall in bottom of body, three adding thermal resistances of first resistive heater
Silk is separately positioned on the middle position of two the first above-mentioned temperature sensors.
The caliberating device of above-mentioned a kind of immersion method crack propagation signal, it is characterised in that: the metallic conductor is length
It is the copper wire conductors that 600mm, diameter are 50mm.
Compared with the prior art, the present invention has the following advantages:
1, the present invention using metallic conductor is heated in water, and according to metallic conductor, resistance changes at different temperatures
The characteristics of, the voltage signal of microvolt grade is obtained when metallic conductor both ends are passed through DC current, is being based on direct current to be domestic
The development of the crack monitoring instrument of potential drop method provides the signal that efficiently and accurately simulating crack extends, and the present invention
The relationship between the extension signal of the crack length of 304 steel curved beams and the voltage signal of metallic conductor is disclosed, correlation is accelerated
The localization process of instrument, for verify crack monitoring instrument function and precision provide it is a kind of efficiently, it is simple, quick and can be anti-
The caliberating device of the crack propagation signal used again.
2, the present invention is by changing the size for being passed through the input current of metallic conductor and the material, the length that change metallic conductor
And cross-sectional area has calibration range wide and can continuity to meet the calibration demand to the crack propagation signal of various sample
The advantages of variation.
3, by the present invention in that using micro-chip processor as the control module of temperature regulating device, have operating rate fast, performance
The advantages of stable and intelligent control, can be good at the variation for controlling temperature, improve the precision of caliberating device.
4, the present invention uses finite element analysis and experimental verification, has obtained the crack extending length and metal of 304 steel curved beams
Mapping relations between the voltage signal of conductor, can in 304 steel crack propagation processes, accurate On Crack Propagation length
Extension signal is demarcated, and the exploitation for accelerating to promote instrument and the extension scope of application are conducive to.
Below by drawings and examples, the present invention is described in further detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of caliberating device of the present invention.
Fig. 2 is the schematic block circuit diagram of temperature regulating device of the present invention.
Fig. 3 is the top view of caliberating device of the present invention.
Fig. 4 is the circuit diagram of main control module of the present invention.
Fig. 5 is the circuit diagram of reseting module of the present invention.
Fig. 6 is the circuit diagram of setting module of the present invention.
Fig. 7 is the circuit diagram of buzzer circuit of the present invention.
Fig. 8 is the circuit diagram of LED circuit of the present invention.
Fig. 9 is that the invention shows the circuit diagrams of module.
Figure 10 is the fall-of-potential method schematic diagram that sample of the present invention does not contain crackle.
Figure 11 is the fall-of-potential method schematic diagram that sample of the present invention contains crackle.
Figure 12 is the finite element model figure of 304 steel curved beams of the invention.
Figure 13 is the finite element result figure of 304 steel curved beams of the invention.
Figure 14 is the crack growth amount of 304 steel curved beams and the curve graph of potential drop of the invention.
Description of symbols:
1-pedestal；The first temperature sensor of 2-1-；
2-2-second temperature sensor；The first resistive heater of 3-1-；
The second resistive heater of 3-2-；4-1-bottle cap；
4-2-body；5-fans；6-electric current input leads；
7-voltage signal output leads；8-metallic conductors；
9-power supply modules；10-main control modules；11-setting modules；
12-display modules；13-alarm modules；13-1-LED circuit；
13-2-buzzer circuit；14-reseting modules.
Specific embodiment
The principle for the direct current potential drop applied in crack monitoring instrument based on direct current potential drop are as follows: fall-of-potential method is to be based on
The conductive characteristic of metal material itself is come the method that measures crack length.As shown in Figure 10 and Figure 11, on containing precracked specimen, electricity
Flow field is specimen geometry, especially the function of crack size, and when passing through constant current in sample, potential can be in sample
The increase of crack length and increase.For fall-of-potential method with generally being implemented with four probe method, two probe of outside (C1, C2) is electric current electricity
Pole, for exciting current I from two probe of outside by tested sample, two probe of inside (P1, P2) is voltage V (potential difference) electrode, electricity
Potential difference depends on the distribution of electric current in sample.
The present invention carries out to determine metallic conductor relationship between the voltage signal under temperature difference and crack propagation signal
Following working contents:
One, the project verification meaning of caliberating device
An expansion corresponding with actual crack length is needed in the research and development of crack monitoring instrument based on direct current potential drop method
Signal source of the voltage signal as research and development instrument is opened up, quantization calibration is carried out come the extension signal to crack length, is based on for the country
The development of the crack monitoring instrument of direct current potential drop method provide it is a kind of efficiently, simple, efficiently scaling method and caliberating device.
Two, the establishment foundation of caliberating device
The principle of direct current potential drop method is exactly to measure the variation of sample both end voltage signal, when sample both ends are plus constant
When electric current, the voltage drop at crackle both ends is gradually increased with the growth of crackle, but due to the extension of the crackle of metal parts speed
Rate is very slow, then tens days short, the long then more than ten years, because its experimental situation realizes that the period is too long, is not appropriate for making in R&D process
For the crack propagation signal source of crack monitoring instrument, it is therefore proposed that finding the method for simulating crack extension signal to solve metal
Part crack expanded period length and uncontrollable problem.
Three, the finite element model analysis of 304 steel curved beams
Choosing most common 304 steel in metal parts is sample to carry out finite element model analysis, determines 304 steel crackles
Relationship between extension length and crack propagation signal；
(1) as shown in figure 12, the finite element model of 304 steel curved beams is established；
(2) the associated materials attribute of 304 steel curved beam finite element models of setting, Conductivity=0.19w/ (mm),
Electrical conductivity=26100/ Ω mm, Joule heat fraction=1；
(3) assembling model；
(4) analysis step is created, type is General:Couple thermal-electric, defines initial gain amount and most
Big increment is 0.1；
(5) boundary condition, electric current 1A and environment temperature field in input set are created；
(6) grid division, Element types are DC3D8E unit；
(7) it submits operation and checks as a result, wherein the finite element result of 304 steel curved beams is as shown in figure 13,304 steel curved beams
Crack growth amount and the curve graph of potential drop are as shown in figure 14；
By in Figure 14 it is found that the signal intensity of its crack propagation is 0.5 μ V when the crack growth 1mm of 304 steel curved beams.
Four, the selection of the metallic conductor of 304 steel curved beam crack propagation signals is simulated
The crack propagation signal that 304 steel curved beams are learnt according to Finite element analysis results is microvolt grade signal, can pass through micro-ohm
The resistance of grade carrys out simulating crack extension signal, compares by the resistance parameter to metallic conductor, discovery copper wire is more quick with temperature
Feel and resistance change is smaller, and the small change of copper wire resistance value can be led to using the variation of temperature using temperature as load
Change to obtain the voltage signal of microvolt grade；
Five, the theoretical calculation of voltage value of the copper wire under temperature change
The copper wire of length 600mm diameter 50mm is chosen, with (10 DEG C to 100 DEG C) of temperature for load, when temperature increases, byKnow that electricalresistivityρ, length L and area S are changing, for the copper wire that length is 600mm, diameter is 50mm, temperature
Variation influences relative to resistivity effects very little the length L of copper wire and area S, therefore only considers copper wire resistance for convenience of calculation
Rate variation with temperature, obtains under temperature change, the variation delta R of copper wire resistance value, and then obtains microvolt magnitude voltage signals
Variation；
According to the calculation formula of the resistance difference of copper wire:
Δ R=R0*T*(Tt-20)
In formula, R0 is the resistance value of initial temperature, and Tt is current temperature value, and T is the temperature coefficient under Current Temperatures, 20 DEG C
When copper wire resistance R0=1.3598 Ω, according to temperature coefficient table and calculation formula:
When 1 DEG C of temperature change, Δ R=0.00000049505 Ω,
According to the calculation formula of the voltage difference of copper wire are as follows:
Δ V=Δ RI
Wherein, Δ V is the voltage value difference at two temperature of copper wire, and Δ R is the resistance value difference of copper wire at two temperatures
Value, I 1A are calculated:
Δ V=0.49805 μ V
The finite element model analysis result of the calculated results and 304 steel curved beams that are varied with temperature in conjunction with copper wire voltage value
It can be seen that copper wire temperature increase by 1 DEG C when voltage signal it is identical as extension signal when 304 steel curved beam crack propagation 1mm,
It is 0.5 μ V.
Six, copper wire varies with temperature the experimental verification for obtaining microvolt magnitude voltage signals
(1) both ends of copper wire are connect with constant-current source with test equipment respectively, in the electric current of copper wire both ends input 1A；
(2) voltage signal of copper wire is acquired in test equipment；
(3) increase water temperature, incrementally walk 0.1 DEG C record acquisition voltage signal numerical value, and by the voltage value of acquisition with
The result of finite element model analysis compares.
Seven, it draws a conclusion
Voltage signal of the copper wire that length is 600mm, diameter is 50mm when temperature increases 1 DEG C can be used as 304 steel CT
The simulating crack of sample crack propagation 1mm extends signal.
As shown in figures 1 and 3, the splitting to the crack monitoring instrument based on direct current potential drop method using relationship determined above
Line extends the caliberating device of signal scaling, including pedestal 1, metallic conductor 8, fan 5, vacuum flask and can set and show heat preservation
The temperature of water in bottle and the temperature regulating device alarmed when the temperature of water is more than set temperature, the vacuum flask includes body 4-
2 and the lower part of bottle cap 4-1, the body 4-2 positioned at the top body 4-2 be arranged in pedestal 1, the fan 5 is arranged in bottle
It the bottom of body 4-2 and can radiate to body 4-2 when the temperature of water is more than set temperature, the metallic conductor 8 is arranged
It in body 4-2 and impregnates in water, the both ends of the metallic conductor 8 are respectively connected with electric current input lead 6 and voltage signal is defeated
Conducting wire 7 out are provided with the first temperature sensor for measuring the lower part body 4-2 water temperature in the bottom interior wall of the body 4-2
2-1 is provided with the second temperature sensor 2-2 for measuring the top body 4-2 water temperature in the upper inside wall of the body 4-2,
The first resistive heater 3-1 for the water heating to the lower part body 4-2, institute are provided in the bottom interior wall of the body 4-2
The second resistive heater 3-2 being provided in the upper inside wall of body 4-2 for the water heating to the top body 4-2 is stated, it is described
First temperature sensor 2-1, second temperature sensor 2-2, the first resistive heater 3-1, the second resistive heater 3-2 and fan
5 connect with the temperature regulating device and control work by temperature regulating device.
In the present embodiment, the caliberating device is applied to crack monitoring instrument to the crack propagation signals of 304 steel curved beams
Calibration, the crack monitoring instrument are the crack monitoring instrument based on direct current potential drop method.
As shown in Fig. 2, the temperature regulating device includes main control module 10, the heating temperature for water in body 4-2 to be arranged
Setting module 11, the display module 12 for showing water temperature, for when in body 4-2 water temperature be more than set temperature when alarm
Alarm module 13, the reseting module 14 for returning to original state 10 data of main control module and be used for as each electricity consumption of system
The power supply module 9 that unit is powered, the first temperature sensor 2-1, second temperature sensor 2-2,11 and of setting module
Reseting module 14 is connect with the input terminal of main control module 10, the display module 12, alarm module 13, the first resistive heater
3-1, the second resistive heater 3-2 and fan 5 are connect with the output end of main control module 10.
As shown in Figure 4 and Figure 5, the main control module 10 includes micro-chip processor and four capacitances are the electricity of 100nF
Hold C22, capacitor C23, capacitor C24, capacitor C25, the micro-chip processor is the micro process core that model is STM32F103C8T6
Piece, the both ends of the capacitor C22 are connect with the end VDD-1 of micro-chip processor and the end VSS-1 respectively and the end VSS-1 is grounded, described
The both ends of capacitor C23 are connect with the end VDD-2 of micro-chip processor and the end VSS-2 respectively and the end VSS-2 is grounded, the capacitor C24
Both ends connect respectively with the end VDD-3 of micro-chip processor and the end VSS-3 and the end VSS-3 is grounded, the both ends of the capacitor C25 point
It is not connect with the end VDDA of micro-chip processor and the end VSSA and the end VSSA is grounded, the end VDD-1 of the micro-chip processor, VDD-2
End, the end VDD-3 and the end VDDA are respectively connected to the 3.3V voltage of the offer of power supply module 9；The micro-chip processor and the first heating electricity
Resistance silk 3-1, the second resistive heater 3-2 and fan 5 are all connected with and control work by micro-chip processor；
The capacitor C1 that the reseting module 14 includes the resistance R1 that a resistance value is 10K Ω and a capacitance is 100nF,
One end of the resistance R1, one end of capacitor C1 are connect with No. 7 pins of micro-chip processor, another termination of the capacitor C1
Ground, the 3.3V voltage that the other end access power supply module 9 of the resistance R1 provides.
As shown in Figure 7 and Figure 8, the alarm module 13 includes prompt water temperature beyond set temperature and makes a sound alarm
Buzzer circuit 13-2 and prompt water temperature exceed set temperature and carry out the LED circuit 13-1 of light warning；The buzzer electricity
Road 13-2 include a resistance value be 4.7K Ω resistance R7, a resistance value be 10K Ω resistance R6, a buzzer and a type
It number is the triode of S8050, one end, one end of resistance R6 and the base stage of triode of the resistance R7 is all connected with, the resistance
The other end of R6 and the emitter of triode are connected and are grounded, and the collector of the triode and the cathode of buzzer connect, institute
The 3.3V voltage that the anode access power supply module 9 of buzzer provides is stated, the other end of the resistance R7 passes through row's needle and micro process
No. 2 pins of chip connect；
The LED circuit 13-1 includes light emitting diode H2, light emitting diode H3, light emitting diode H4 and light emitting diode
H5 and four resistance value is resistance R12, resistance R13, resistance R14 and the resistance R15, the resistance R12, resistance R13, electricity of 1K Ω
The 3.3V voltage that one end of resistance R14 and resistance R15 is all connected with and connecting pin access power supply module 9 provides, the resistance R12's is another
One end is connect with one end of light emitting diode H2, and the other end of the resistance R13 is connect with one end of light emitting diode H3, described
The other end of resistance R14 is connect with one end of light emitting diode H4, the other end of the resistance R15 and the one of light emitting diode H5
Connection is held, the other end of the light emitting diode H2 is connected by No. 17 pins of row's needle and micro-chip processor, and described luminous two
The other end of pole pipe H3 is connected by No. 16 pins of row's needle and micro-chip processor, and the other end of the light emitting diode H4 passes through
No. 15 pins for arranging needle and micro-chip processor connect, and the other end of the light emitting diode H5 passes through row's needle and micro-chip processor
No. 14 pin connections.
As shown in Fig. 6 and Fig. 9, the setting module 11 includes key Key1, key Key2, key Key3 and key
No. 1 pin of Key3, the key Key1 and No. 3 pins ground connection, No. 2 pins and No. 4 pins of the key Key1 with it is micro-
No. 7 pins connection of chip is handled, No. 1 pin and No. 3 pins of the key Key2 is grounded, and No. 2 of the key Key2
Pin and No. 4 pins are connect with No. 38 pins of micro-chip processor, No. 1 pin of the key Key3 and No. 3 pin ground connection,
No. 2 pins and No. 4 pins of the key Key3 are connect with No. 37 pins of micro-chip processor, and No. 1 of the key Key4
Pin and No. 3 pins are grounded, and No. 2 pins and No. 4 pins of key Key4 are connect with No. 34 pins of micro-chip processor；
The display module 12 is the displacement buffering device of 74HC595, two electricity including four laser-emitting diodes, two models
It is the resistance R21 and resistance R22 of 10K Ω, four resistance values that capacitance, which is the capacitor C27 and capacitor C28 of 100nF, two resistance values,
It is triode V3, the triode that resistance 23, resistance R24, resistance R25 and the resistance R26 of 120 Ω, four models are S8550
V4, triode V5, triode V6 and four resistance values are resistance R27, resistance R28, resistance R29 and the resistance R30 of 4.7K Ω, institute
No. 14 pins for stating two displacement buffering devices pass through row's needle and No. 13 pins of micro-chip processor connect, and described two displacements are slow
No. 12 pins for rushing device pass through row's needle and No. 12 pins of micro-chip processor connect, and No. 11 of described two displacement buffering devices are drawn
Foot passes through row's needle and No. 11 pins of micro-chip processor connect；No. 16 pins of one of them displacement buffering device, which access, to be supplied
3.3V voltage that electric module 9 provides and connect with one end of capacitor C27, the other end of the capacitor C27 is grounded, one of institute
Rheme moves 8 pins of buffer and No. 13 pins are grounded, No. 10 pins and resistance R21 of one of them displacement buffering device
One end connection and resistance R21 the other end access power supply module 9 provide 3.3V voltage, one of them described displacement buffering device
15 pins connect with No. 11 pins of four laser-emitting diodes, 1 pin is connect with No. 7 pins of four laser-emitting diodes, 2 pins
It is connect with No. 4 pins of four laser-emitting diodes, 3 pins are connect with No. 2 pins of four laser-emitting diodes, 4 pins and four LED
No. 1 pin connection of display tube, 5 pins connect with No. 10 pins of four laser-emitting diodes, 6 pins and four laser-emitting diodes
No. 5 pin connections, 7 pins are connect with No. 3 pins of four laser-emitting diodes；No. 16 pins of another displacement buffering device
It accesses the 3.3V voltage that power supply module 9 provides and is connect with one end of capacitor C28, the other end ground connection of the capacitor C28 is another
No. 8 pins and No. 13 pins of a displacement buffering device are grounded, No. 10 pins and electricity of another displacement buffering device
The 3.3V voltage of one end connection of R22 and the other end access offer of power supply module 9 of resistance R22 is hindered, another described displacement is slow
No. 15 pins for rushing device are connect with one end of resistance R27, and the other end of the resistance R27 is connect with the base stage of triode V3, institute
The collector for stating triode V3 is connect with No. 12 pins of four laser-emitting diodes, the emitter and resistance R23 of the triode V3
One end connection, No. 1 pin of another displacement buffering device connect with one end of resistance R28, and the resistance R28's is another
End is connect with the base stage of triode V4, and the collector of the triode V4 is connect with No. 9 pins of four laser-emitting diodes, described
The emitter of triode V4 is connect with one end of resistance R24, and No. 2 pins of another displacement buffering device are with resistance R29's
One end connection, the other end of the resistance R29 connect with the base stage of triode V5, the collector of the triode V5 and four
No. 8 pins of laser-emitting diode connect, and the emitter of the triode V5 is connect with one end of resistance R25, another described displacement
No. 3 pins of buffer are connect with one end of resistance R30, and the other end of the resistance R30 is connect with the base stage of triode V6, institute
The collector for stating triode V6 is connect with No. 6 pins of four laser-emitting diodes, the emitter and resistance R26 of the triode V6
One end connection, the other end of the resistance R23, the other end of resistance R24, the other end of resistance R25 and resistance R26 it is another
The 3.3V voltage that end access power supply module 9 provides.
In the present embodiment, it is DS18B20 that the first temperature sensor 2-1 and second temperature sensor 2-2, which are model,
Temperature sensor, the quantity of the first temperature sensor 2-1 is three and is uniformly arranged in the bottom one week of body 4-2
On wall, the first temperature sensor 2-1 is respectively temperature sensor IC1, temperature sensor IC2 and temperature sensor IC3, institute
Stating second temperature sensor 2-2 is temperature sensor IC4, No. 14 pins company of the temperature sensor IC1 and micro-chip processor
It connects, the other end of the light emitting diode H5 by the connection of No. 14 pins of row's needle and micro-chip processor and can pass through light-emitting diodes
The light on and off of pipe H5 come judge water temperature at the position temperature sensor IC1 whether overtemperature, the temperature sensor IC2 and micro process core
No. 15 pins of piece connect, the other end of the light emitting diode H4 by the connection of No. 15 pins of row's needle and micro-chip processor and
Can be judged by the light on and off of light emitting diode H4 water temperature at the position temperature sensor IC2 whether overtemperature, the temperature sensing
The other end of the connection of No. 16 pins of device IC3 and micro-chip processor, the light emitting diode H3 passes through row's needle and micro-chip processor
No. 16 pins connection and can judge whether the water temperature at the position temperature sensor IC3 surpasses by the light on and off of light emitting diode H3
No. 17 pins of temperature, the temperature sensor IC4 and micro-chip processor connect, and the other end of the light emitting diode H2 passes through row
No. 17 pins of needle and micro-chip processor connect and can judge the position temperature sensor IC4 by the light on and off of light emitting diode H2
The water temperature at place whether overtemperature.
In the present embodiment, the quantity of the first resistive heater 3-1 is three and is uniformly arranged on the bottom of body 4-2
On one week inner wall, three resistive heaters of the first resistive heater 3-1 are separately positioned on two the first above-mentioned temperature
The middle position of sensor 2-1.
In the present embodiment, the metallic conductor 8 is that length is the copper wire conductors that 600mm, diameter are 50mm.
The scaling method of immersion method crack propagation signal the following steps are included:
Step 1: by the connecting line of the crack monitoring instrument based on direct current potential drop method respectively with electric current input lead 6 and
Voltage signal output lead 7 connects, and the input electricity of metallic conductor 8 is set on the crack monitoring instrument based on direct current potential drop method
Flow valuve is I；
Step 2: setting module 11 inputs set temperature T into main control module 100DEG C, the control of main control module 10 first
Resistive heater 3-1 and the second resistive heater 3-2 starts to work, the first resistive heater 3-1 and the second resistive heater 3-2
Heating heat transfer into water, the temperature of water starts to increase at this time, when display module 12 show water actual temperature be more than set
Determine temperature T0DEG C when, the LED light of LED circuit 13-1 lights and buzzer in buzzer circuit 13-2 issues alarm, at this time
By main control module 10 reduce the first resistive heater 3-1 and the second resistive heater 3-2 heated current and open fan 5 come
Reduce water temperature；When actual temperature is lower than set temperature T0DEG C when, the control of main control module 10 increases the first resistive heater 3-1 and the
The heated current of two resistive heater 3-2 and the wind speed for reducing fan 5, to ensure that the temperature for keeping the temperature water in bottle maintains T0℃
It is interior；
Step 3: the crack monitoring instrument based on direct current potential drop method acquires and saves metallic conductor 8 in temperature T0DEG C when
Voltage output signal be V0；
Step 4: inputting set temperature (T into main control module 10 in setting module 110+ 0.1) DEG C, main control module 10 is controlled
It makes the first resistive heater 3-1 and the second resistive heater 3-2 to start to work, the temperature of water increases, when display module 12 is shown
The actual temperature of water is more than set temperature (T0+ 0.1) when DEG C, the LED light of LED circuit 13-1 lights and in buzzer circuit 13-2
Buzzer issue alarm, at this time by main control module 10 reduce the first resistive heater 3-1 and the second resistive heater 3-2
Input current and open control fan 5 and reduce water temperature；When the actual temperature of water is lower than set temperature (T0+ 0.1) when DEG C, lead to
The control of main control module 10 is crossed to increase the heated current of the first resistive heater 3-1 and the second resistive heater 3-2 and reduce fan 5
Wind speed ensure that the temperature of water in vacuum flask maintains (T0+ 0.1) in DEG C；
Step 5: the crack monitoring instrument based on direct current potential drop method acquires and saves metallic conductor 8 in temperature (T0+
DEG C 0.1) voltage output signal when is V1；
Step 6: theoretical calculation, the finite element model analysis of 304 steel curved beams and the reality of metallic conductor based on metallic conductor
Verifying, obtains relationship of the metallic conductor between the voltage signal under temperature difference and crack propagation signal are as follows: metallic conductor
Temperature is every, which to rise 1 DEG C, can simulate 304 steel curved beam crack growth 1mm, since the temperature difference of collection voltages output signal twice is
0.1 DEG C, the difference DELTA V=V according to the voltage signal that above relationship is acquired twice1-V0304 steel curved beam of analog is split
Line increases the crack propagation signal of 0.1mm, therefore the Δ V signal mark that will be acquired based on the crack monitoring instrument of direct current potential drop method
It is set to crack propagation signal when crack propagation 0.1mm；
Step 7: each increment of set temperature is 0.1 DEG C, step 4 and step 5 are repeated and by collected voltage
Signal and the voltage signal of step 3 acquisition seek difference, according to the known relationship in step 6 come long to different crack propagations
The extension signal of degree is demarcated, and when completing the calibration for the crack propagation signal that crack extending length is 5mm, is based on direct current
The crack propagation signal scaling of the crack monitoring instrument of potential drop method terminates.
In general, the service life of 304 steel is just unable to satisfy engine request after 304 steel crack growth 5mm, because
This signal for monitoring crack extension meets requirement of engineering.
The Signal of Cracks size for being directed to different materials sample is different, can by adjust input current size come
Larger or smaller signal is obtained, it can basis if required to reference signalRe-start copper wire size design
Or change size of current.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification, change and equivalent structure transformation to the above embodiments, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (9)
1. a kind of caliberating device of immersion method crack propagation signal, it is characterised in that: including pedestal (1), metallic conductor (8), wind
It fans (5), vacuum flask and can set and show the temperature of heat preservation water in bottle and be reported when the temperature of water is more than set temperature
Alert temperature regulating device, the vacuum flask include body (4-2) and the bottle cap (4-1) for being located at the top body (4-2), the body
The lower part setting of (4-2) is in pedestal (1), and the bottom in body (4-2) is arranged in the fan (5) and the temperature when water is more than to set
It can radiate to body (4-2) when determining temperature, metallic conductor (8) setting is in body (4-2) and impregnates in water,
The both ends of the metallic conductor (8) are respectively connected with electric current input lead (6) and voltage signal output lead (7), the body (4-
2) the first temperature sensor (2-1) for measuring the lower part body (4-2) water temperature, the body are provided in bottom interior wall
The second temperature sensor (2-2) for measuring the top body (4-2) water temperature, the bottle are provided in the upper inside wall of (4-2)
The first resistive heater (3-1) for the water heating to the lower part body (4-2), institute are provided in the bottom interior wall of body (4-2)
State the second resistive heater (3- being provided in the upper inside wall of body (4-2) for the water heating to the top body (4-2)
2), first temperature sensor (2-1), second temperature sensor (2-2), the first resistive heater (3-1), the second heating electricity
Resistance silk (3-2) and fan (5) connect with the temperature regulating device and control work by temperature regulating device.
2. a kind of caliberating device of immersion method crack propagation signal described in accordance with the claim 1, it is characterised in that: the calibration
Device be applied to calibration of the crack monitoring instrument to the crack propagation signal of 304 steel curved beams, the crack monitoring instrument be based on
The crack monitoring instrument of direct current potential drop method.
3. a kind of caliberating device of immersion method crack propagation signal according to claim 2, it is characterised in that: the temperature control
Device includes main control module (10), the setting module (11) for the heating temperature of water in body (4-2) to be arranged, for showing water
The display module (12) of temperature, is used the alarm module (13) for alarming when water temperature is more than set temperature in body (4-2)
In the reseting module (14) for returning to original state main control module (10) data and for being supplied for each power unit of system
Electricity power supply module (9), first temperature sensor (2-1), second temperature sensor (2-2), setting module (11) and answer
Position module (14) is connect with the input terminal of main control module (10), the display module (12), alarm module (13), the first heating
Resistance wire (3-1), the second resistive heater (3-2) and fan (5) are connect with the output end of main control module (10).
4. a kind of caliberating device of immersion method crack propagation signal described in accordance with the claim 3, it is characterised in that: the master control
Module (10) includes micro-chip processor and four capacitances are capacitor C22, capacitor C23, capacitor C24, the capacitor C25 of 100nF,
The micro-chip processor be model be STM32F103C8T6 micro-chip processor, the both ends of the capacitor C22 respectively with micro process
The end VDD-1 of chip connected with the end VSS-1 and the end VSS-1 be grounded, the both ends of the capacitor C23 respectively with micro-chip processor
The end VDD-2 connected with the end VSS-2 and the end VSS-2 be grounded, the both ends of the capacitor C24 respectively with the end VDD-3 of micro-chip processor
Connected with the end VSS-3 and the end VSS-3 be grounded, the both ends of the capacitor C25 respectively with the end VDDA of micro-chip processor and the end VSSA
Connection and the end VSSA ground connection, the end VDD-1, the end VDD-2, the end VDD-3 and the end VDDA of the micro-chip processor are respectively connected to power
The 3.3V voltage that module (9) provides；The micro-chip processor and the first resistive heater (3-1), the second resistive heater (3-2)
It is all connected with fan (5) and work is controlled by micro-chip processor；
The capacitor C1 that the reseting module (14) includes the resistance R1 that a resistance value is 10K Ω and a capacitance is 100nF, institute
One end of one end, capacitor C1 for stating resistance R1 is connect with No. 7 pins of micro-chip processor, another termination of the capacitor C1
Ground, the 3.3V voltage that other end access power supply module (9) of the resistance R1 provides.
5. a kind of caliberating device of immersion method crack propagation signal according to claim 4, it is characterised in that: the alarm
Module (13) includes prompting water temperature beyond set temperature and making a sound the buzzer circuit (13-2) of alarm and prompt water temperature super
Set temperature and carry out the LED circuit (13-1) of light warning out；The buzzer circuit (13-2) includes that a resistance value is
The resistance R7 of 4.7K Ω, a resistance value are that resistance R6, a buzzer and a model of 10K Ω are the triode of S8050, institute
The one end, one end of resistance R6 and the base stage of triode for stating resistance R7 are all connected with, the other end of the resistance R6 and triode
Emitter connection and ground connection, the collector of the triode and the cathode of buzzer connect, and the anode access of the buzzer supplies
The other end of the 3.3V voltage that electric module (9) provides, the resistance R7 is connected by No. 2 pins of row's needle and micro-chip processor；
The LED circuit (13-1) includes light emitting diode H2, light emitting diode H3, light emitting diode H4, light emitting diode H5
It is resistance R12, resistance R13, resistance R14 and the resistance R15, the resistance R12, resistance R13, resistance of 1K Ω with four resistance values
The 3.3V voltage that one end of R14 and resistance R15 are all connected with and connecting pin access power supply module (9) provides, the resistance R12's is another
One end is connect with one end of light emitting diode H2, and the other end of the resistance R13 is connect with one end of light emitting diode H3, described
The other end of resistance R14 is connect with one end of light emitting diode H4, the other end of the resistance R15 and the one of light emitting diode H5
Connection is held, the other end of the light emitting diode H2 is connected by No. 17 pins of row's needle and micro-chip processor, and described luminous two
The other end of pole pipe H3 is connected by No. 16 pins of row's needle and micro-chip processor, and the other end of the light emitting diode H4 passes through
No. 15 pins for arranging needle and micro-chip processor connect, and the other end of the light emitting diode H5 passes through row's needle and micro-chip processor
No. 14 pin connections.
6. a kind of caliberating device of immersion method crack propagation signal according to claim 4, it is characterised in that: the setting
Module (11) includes key Key1, key Key2, key Key3 and key Key3, and No. 1 pin of the key Key1 and No. 3 are drawn
Foot ground connection, No. 2 pins and No. 4 pins of the key Key1 are connect with No. 7 pins of micro-chip processor, the key Key2
No. 1 pin and No. 3 pins be grounded, No. 2 pins and No. 4 pins of the key Key2 draw with No. 38 of micro-chip processor
Foot connection, No. 1 pin and No. 3 pins of the key Key3 are grounded, and No. 2 pins and No. 4 pins of the key Key3 are equal
It being connect with No. 37 pins of micro-chip processor, No. 1 pin and No. 3 pins of the key Key4 is grounded, and No. 2 of key Key4
Pin and No. 4 pins are connect with No. 34 pins of micro-chip processor；
It is the displacement buffering device of 74HC595, two capacitors that the display module (12), which includes four laser-emitting diodes, two models,
Value is that the capacitor C27 and capacitor C28 of 100nF, two resistance values are that the resistance R21 and resistance R22 of 10K Ω, four resistance values are equal
For the resistance 23 of 120 Ω, resistance R24, resistance R25 and resistance R26, four models be the triode V3 of S8550, triode V4,
Triode V5, triode V6 and four resistance values are the resistance R27 of 4.7K Ω, resistance R28, resistance R29 and resistance R30, described
No. 14 pins of two displacement buffering devices pass through row's needle and No. 13 pins of micro-chip processor connect, described two displacement bufferings
No. 12 pins of device pass through row's needle and No. 12 pins of micro-chip processor connect, No. 11 pins of described two displacement buffering devices
Connected by No. 11 pins of row's needle and micro-chip processor；No. 16 pins of one of them displacement buffering device access power supply
3.3V voltage that module (9) provides and connect with one end of capacitor C27, the other end of the capacitor C27 is grounded, one of institute
Rheme moves 8 pins of buffer and No. 13 pins are grounded, No. 10 pins and resistance R21 of one of them displacement buffering device
One end connection and resistance R21 the other end access power supply module (9) provide 3.3V voltage, one of them described displacement buffering
15 pins of device are connect with No. 11 pins of four laser-emitting diodes, 1 pin is connect with No. 7 pins of four laser-emitting diodes, 2 draw
Foot is connect with No. 4 pins of four laser-emitting diodes, 3 pins are connect with No. 2 pins of four laser-emitting diodes, 4 pins and four
No. 1 pin connection of laser-emitting diode, 5 pins are connect with No. 10 pins of four laser-emitting diodes, 6 pins and four LED are shown
No. 5 pins connection of pipe, 7 pins are connect with No. 3 pins of four laser-emitting diodes；No. 16 of another displacement buffering device
Pin accesses the 3.3V voltage that power supply module (9) provide and connect with one end of capacitor C28, another termination of the capacitor C28
Ground, No. 8 pins and No. 13 pins of another displacement buffering device are grounded, No. 10 of another displacement buffering device are drawn
The 3.3V voltage that foot is connect with one end of resistance R22 and the other end of resistance R22 access power supply module (9) provides, another institute
No. 15 pins that rheme moves buffer are connect with one end of resistance R27, the other end of the resistance R27 and the base stage of triode V3
Connection, the collector of the triode V3 connect with No. 12 pins of four laser-emitting diodes, the emitter of the triode V3 and
One end of resistance R23 connects, and No. 1 pin of another displacement buffering device is connect with one end of resistance R28, the resistance
The other end of R28 is connect with the base stage of triode V4, the collector of the triode V4 and No. 9 pins of four laser-emitting diodes
Connection, the emitter of the triode V4 connect with one end of resistance R24, No. 2 pins of another displacement buffering device and
One end of resistance R29 connects, and the other end of the resistance R29 is connect with the base stage of triode V5, the current collection of the triode V5
Pole is connect with No. 8 pins of four laser-emitting diodes, and the emitter of the triode V5 is connect with one end of resistance R25, another
No. 3 pins of the displacement buffering device are connect with one end of resistance R30, the other end of the resistance R30 and the base of triode V6
Pole connection, the collector of the triode V6 are connect with No. 6 pins of four laser-emitting diodes, the emitter of the triode V6
Connect with one end of resistance R26, the other end of the resistance R23, the other end of resistance R24, resistance R25 the other end and resistance
The other end of R26 accesses the 3.3V voltage of power supply module (9) offer.
7. a kind of caliberating device of immersion method crack propagation signal according to claim 4, it is characterised in that: described first
Temperature sensor (2-1) and second temperature sensor (2-2) are the temperature sensor that model is DS18B20, first temperature
The quantity of degree sensor (2-1) is three and is uniformly arranged on the one week inner wall in bottom of body (4-2) that first temperature passes
Sensor (2-1) is respectively temperature sensor IC1, temperature sensor IC2 and temperature sensor IC3, the second temperature sensor
(2-2) is temperature sensor IC4, No. 14 pins connection of the temperature sensor IC1 and micro-chip processor, the light-emitting diodes
The other end of pipe H5 is connected and can be sentenced by the light on and off of light emitting diode H5 by No. 14 pins of row's needle and micro-chip processor
Water temperature at the disconnected position temperature sensor IC1 whether overtemperature, No. 15 pins of the temperature sensor IC2 and micro-chip processor connect
It connects, the other end of the light emitting diode H4 by the connection of No. 15 pins of row's needle and micro-chip processor and can pass through light-emitting diodes
The light on and off of pipe H4 come judge water temperature at the position temperature sensor IC2 whether overtemperature, the temperature sensor IC3 and micro process core
No. 16 pins of piece connect, the other end of the light emitting diode H3 by the connection of No. 16 pins of row's needle and micro-chip processor and
Can be judged by the light on and off of light emitting diode H3 water temperature at the position temperature sensor IC3 whether overtemperature, the temperature sensing
The other end of the connection of No. 17 pins of device IC4 and micro-chip processor, the light emitting diode H2 passes through row's needle and micro-chip processor
No. 17 pins connection and can judge whether the water temperature at the position temperature sensor IC4 surpasses by the light on and off of light emitting diode H2
Temperature.
8. a kind of caliberating device of immersion method crack propagation signal according to claim 7, it is characterised in that: described first
The quantity of resistive heater (3-1) is three and is uniformly arranged on the one week inner wall in bottom of body (4-2) that described first heats
Three resistive heaters of resistance wire (3-1) are separately positioned on the middle position of two above-mentioned the first temperature sensors (2-1).
9. a kind of caliberating device of immersion method crack propagation signal according to claim 1 or 2, it is characterised in that: described
Metallic conductor (8) is that length is the copper wire conductors that 600mm, diameter are 50mm.
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6214035A (en) * | 1985-07-12 | 1987-01-22 | Mitsubishi Heavy Ind Ltd | Test piece for testing fatigue crack propagation |
| US4748854A (en) * | 1986-06-10 | 1988-06-07 | Systran Corporation | Fatigue test apparatus |
| US5202641A (en) * | 1988-07-26 | 1993-04-13 | Matalect Limited | Method, test probe and apparatus for the measurement of alternating current potential drop by confining test current to a skin region of a test specimen |
| KR19990084497A (en) * | 1998-05-07 | 1999-12-06 | 유무성 | Fatigue Crack Growth Rate Measurement Device of Metal Material |
| KR20060024519A (en) * | 2004-09-14 | 2006-03-17 | 대한민국(전남대학교총장) | Measuring instrument of fatigue crack growth rate of rubbery materials and its method thereof |
| CN203414049U (en) * | 2013-09-05 | 2014-01-29 | 西安科技大学 | Slow tension test crack propagation length data acquisition device |
| CN103884603A (en) * | 2014-04-02 | 2014-06-25 | 华东理工大学 | Creep deformation-fatigue crack growth testing device and corresponding testing method |
| CN104034600A (en) * | 2014-05-20 | 2014-09-10 | 北京航空航天大学 | Fatigue crack propagation experiment testing system under extremely high temperature environment |
| CN104677259A (en) * | 2015-03-11 | 2015-06-03 | 中国航空工业集团公司北京航空材料研究院 | Calibration method for measuring accuracy of high-temperature crack length through direct current potential method |
| CN104729899A (en) * | 2015-03-11 | 2015-06-24 | 中国航空工业集团公司北京航空材料研究院 | Method for preventing test sample welding point from oxidation in direct-current potential method high-temperature experiment |
| KR20150134490A (en) * | 2014-05-21 | 2015-12-02 | 한국원자력연구원 | Electrical insulation grip for direct current potential drop(DCPD) test system for measurement of crack growth |
| CN106896140A (en) * | 2015-12-17 | 2017-06-27 | 中国科学院金属研究所 | A kind of fatigue at low temperatures crack growth rate experimental rig and its application method |
| CN107238531A (en) * | 2017-07-21 | 2017-10-10 | 中国科学院金属研究所 | A kind of device and method of compact tensile specimen crack growth rate measurement |
| CN107402158A (en) * | 2017-07-21 | 2017-11-28 | 中国科学院金属研究所 | Improve the reverse current method of direct current potential drop crack growth rate measurement accuracy |
| CN207336223U (en) * | 2017-07-21 | 2018-05-08 | 中国科学院金属研究所 | A kind of device of compact tensile specimen crack growth rate measurement |
-
2019
- 2019-02-23 CN CN201910134574.0A patent/CN109884124A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6214035A (en) * | 1985-07-12 | 1987-01-22 | Mitsubishi Heavy Ind Ltd | Test piece for testing fatigue crack propagation |
| US4748854A (en) * | 1986-06-10 | 1988-06-07 | Systran Corporation | Fatigue test apparatus |
| US5202641A (en) * | 1988-07-26 | 1993-04-13 | Matalect Limited | Method, test probe and apparatus for the measurement of alternating current potential drop by confining test current to a skin region of a test specimen |
| KR19990084497A (en) * | 1998-05-07 | 1999-12-06 | 유무성 | Fatigue Crack Growth Rate Measurement Device of Metal Material |
| KR20060024519A (en) * | 2004-09-14 | 2006-03-17 | 대한민국(전남대학교총장) | Measuring instrument of fatigue crack growth rate of rubbery materials and its method thereof |
| CN203414049U (en) * | 2013-09-05 | 2014-01-29 | 西安科技大学 | Slow tension test crack propagation length data acquisition device |
| CN103884603A (en) * | 2014-04-02 | 2014-06-25 | 华东理工大学 | Creep deformation-fatigue crack growth testing device and corresponding testing method |
| CN104034600A (en) * | 2014-05-20 | 2014-09-10 | 北京航空航天大学 | Fatigue crack propagation experiment testing system under extremely high temperature environment |
| KR20150134490A (en) * | 2014-05-21 | 2015-12-02 | 한국원자력연구원 | Electrical insulation grip for direct current potential drop(DCPD) test system for measurement of crack growth |
| CN104677259A (en) * | 2015-03-11 | 2015-06-03 | 中国航空工业集团公司北京航空材料研究院 | Calibration method for measuring accuracy of high-temperature crack length through direct current potential method |
| CN104729899A (en) * | 2015-03-11 | 2015-06-24 | 中国航空工业集团公司北京航空材料研究院 | Method for preventing test sample welding point from oxidation in direct-current potential method high-temperature experiment |
| CN106896140A (en) * | 2015-12-17 | 2017-06-27 | 中国科学院金属研究所 | A kind of fatigue at low temperatures crack growth rate experimental rig and its application method |
| CN107238531A (en) * | 2017-07-21 | 2017-10-10 | 中国科学院金属研究所 | A kind of device and method of compact tensile specimen crack growth rate measurement |
| CN107402158A (en) * | 2017-07-21 | 2017-11-28 | 中国科学院金属研究所 | Improve the reverse current method of direct current potential drop crack growth rate measurement accuracy |
| CN207336223U (en) * | 2017-07-21 | 2018-05-08 | 中国科学院金属研究所 | A kind of device of compact tensile specimen crack growth rate measurement |
Non-Patent Citations (6)
| Title |
|---|
| I. CERNY: ""The use of DCPD method for measurement of growth of cracks in large components at normal and elevated temperatures"", 《ENGINEERING FRACTURE MECHANICS》 * |
| L. DOREMUS ET AL.: ""Calibration of the potential drop method for monitoring small crack growth from surface anomalies – Crack front marking technique and finite element simulations"", 《INTERNATIONAL JOURNAL OF FATIGUE》 * |
| P. ABACHI ET AL.: ""The correlation between fracture mechanics parameters and creep crack growth rate of Al 7050-T73651 at elevated temperature"", 《ENGINEERING FRACTURE MECHANICS》 * |
| XUE HE 等: ""Development of a Temperature-Controlled Resistance Micro-Change Experimental Device"", 《2018 INTERNATIONAL CONFERENCE ON SENSOR NETWORKS AND SIGNAL PROCESSING (SNSP)》 * |
| 李智军 等: ""直流电位降裂纹测深仪的数值标定"", 《西安科技大学学报》 * |
| 王亮 等: ""直流电位法检测高温合金的疲劳裂纹扩展性能"", 《理化检验-物理分册》 * |
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