CN106370518A - Stress corrosion testing linkage protection system - Google Patents
Stress corrosion testing linkage protection system Download PDFInfo
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- CN106370518A CN106370518A CN201610941018.0A CN201610941018A CN106370518A CN 106370518 A CN106370518 A CN 106370518A CN 201610941018 A CN201610941018 A CN 201610941018A CN 106370518 A CN106370518 A CN 106370518A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
- G01N2203/0204—Safety arrangements, e.g. remote control, emergency stop
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
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Abstract
The invention provides a stress corrosion testing linkage protection system, wherein electrical connections are carried out between each unit of a testing system, input and output ports are formed in each unit, working states are detected among units, corresponding state is outputted through an output port when problems appear in a unit and other units connected with the unit are triggered to be subjected to protective actions; a high-pressure pump is allowed to be started after a circulating pump is started so as to prevent the high-pressure pump from air suction; the high-pressure pump is allowed to be started when cooling water flow is detected so as to prevent high temperature moisture circulated by an experimental kettle from entering a normal loop part; the experimental kettle is allowed to be started after the high-pressure pump is started so as to prevent the experimental kettle from burning without liquid medium; the water chemistry circulation loop high-pressure pump is triggered to be shut down after temperature and pressure exceeding protections is carried out to the experimental kettle unit so as to prevent pressure from continuing to rise. Through carrying out electrical connections among each unit, that relevant units are subjected to linkage protections when problems appear in one unit can be achieved, and the occurrence of efficacy losing or dangerous situations can be avoided.
Description
Technical field
A kind of the present invention relates to stress corrosion (cracking) test technology, more particularly to stress corrosion (cracking) test linkage protection system.
Background technology
When stress corrosion (cracking) test system carries out testing of materials, test duration run time is short then several days, long then up to the several months or
Several years, in equipment running process, it is difficult to carry out round-the-clock manual monitoring, conventional pilot system each unit works independently, at certain
After individual unit goes wrong, other units cannot link protection, bring potential safety hazard to equipment and environment.
Existing stress corrosion (cracking) test equipment, between each unit, basic independent operating, needs to be accomplished manually respective unit
Operation, after such as TT＆C system judges the broken type of sample, sends to cease and desist order and gives stress loading main frame, and test kettle computer heating control with
Water chemistry closed circuit be accomplished by artificial operation carry out out of service.There are two kinds of situations in actual use：
One is the situation for testing normal termination, and Testing Software determines off-test condition and reaches or break type condition expires
Foot, sends commands to stress loading main frame and stops movement, and now experiment kettle unit and water chemistry closed circuit unit can not be timely
Obtain test be over information and continue to run with, can only manual operation out of service, cause additional energy source consumption and test when
Between efficiency reduce；
Two is the situation that some function of each unit breaks down, and specifically includes again：(1) in water chemistry closed circuit
Water tank is provided with high-low water level detection, in running, if somewhere seepage in loop, can cause low-water alarm and stop
Circulating pump in loop and high-pressure pump operating, in experiment kettle, media environment stops circulation, and in kettle, pressure can not keep, experimental enviroment
Condition is destroyed, and needs termination test, but stress loading main computer unit and experiment kettle unit continue to run；(2) kettle unit bag is tested
Contain two parts：Pressure in temperature control instrument control temperature in the kettle, manometer monitoring kettle, sets when temperature, pressure measurement data exceed
After the temperature bound that puts or the pressure bound scope beyond setting, experiment kettle heating can be automatically cut off, this exception occurs
Situation test should stop, but water chemistry closed circuit unit is continued to run with；(3) water chemistry closed circuit unit is followed in kettle to testing
The superheated vapor that ring goes out must return to room temperature loop feature after cooling down, existing equipment is not detected to cooling water current, works as cooling
Water cut or current are too small, and superheated vapor cannot be cooled back to room temperature loop feature, cause parts damages；(4) water chemistry
In closed circuit, high-pressure pump Front-end Design has solution buffering filter, and the solution in water tank is squeezed into solution after circulation pump startup
Buffering filter, sucks for high-pressure pump, and existing equipment high-pressure pump and circulating pump are independent startups, exist circulating pump not actuated and
The situation of high-pressure pump can be started, high-pressure pump can cause to damage because of suction.
Content of the invention
The technical problem to be solved is to provide a kind of stress corrosion (cracking) test linkage protection system, and each unit is entered
Row electrically couples, realize a certain function there is exception after related unit carry out linkage protection, it is to avoid failure or dangerous situation
Occur.
For solving the above problems, the present invention proposes a kind of stress corrosion (cracking) test linkage protection system, including：
Stress loading test unit, for the control that tests, which has the computer heating control for exporting heating keying signal
Output port；
Experiment kettle unit, with temperature control device and voltage-controlled devices；Experiment kettle unit has to be believed in order to receive high pressure pump startup
Number high pressure pump startup input and connect the computer heating control input of the computer heating control output port；Temperature control device is in institute
Heat to testing kettle when stating heating keying signal and effective high pressure pump activation signal；Experiment kettle unit also has output temperature
The temperature, pressure protection outfan of degree pressure protection output signal, the temperature, pressure protection output signal is in temperature control device or pressure
Control equipment institute measured value is changed into invalid when transfiniting；
Water chemistry closed circuit unit, with the circulation line for connecting the experiment kettle, is provided with the circulation line
Water storage box, circulating pump, high-pressure pump, are provided with liquid level detection device in the water storage box；The circulating pump is according to liquid level detection device
The liquid level low signal that detects and close；There is on the circulation line cooling circuit, cooling circuit to be provided with current detection dress
Put, carry out effective cooling water detection signal being generated when normal cooling works in cooling circuit；Water chemistry closed circuit unit has
There is the temperature, pressure protection input for receiving temperature, pressure protection output signal, the high-pressure pump is only in temperature, pressure protection output
Signal is effective, the circulating pump allows to start when being in starting state and effective cooling water detection signal, generates effectively during startup
High pressure pump activation signal, otherwise close, water chemistry closed circuit unit also has the output high pressure pump activation signal and connects
It is connected to the high pressure pump startup outfan of high pressure pump startup input.
According to one embodiment of present invention, the experiment kettle unit includes：
Heating starting circuit, opens including the computer heating control input that is connected between supply voltage and ground, high-pressure pump
Dynamic input, heater switch and the first relay；The computer heating control input receives effectively heating keying signal and height
When press pump startup input receives effective high pressure pump activation signal, the first relay output if the heater switch is turned on
Heating starting signal, otherwise output heating shutdown signal；
Temperature, pressure protects output control circuit, including the temperature control device, the voltage-controlled devices, the second relay and institute
State temperature, pressure protection outfan；The temperature control device receives heating starting signal and is heated；The temperature control device inspection
Heating-up temperature is surveyed, which protects the normally-closed contact of outfan to disconnect in overtemperature, otherwise closes；The protection output of the voltage-controlled devices
The protection outfan of the end series winding temperature control device, the voltage-controlled devices make the normally closed of the protection outfan of voltage-controlled devices in superpressure
When disconnecting the normally-closed contact of the protection outfan of temperature control device when contact disconnects or in temperature control device overtemperature so that connection
Second relay power-off, the temperature, pressure protection outfan so as to be connected with the second relay output end export invalid temperature
Degree pressure protection output signal, otherwise exports effective temperature, pressure protection output signal.
According to one embodiment of present invention, the temperature control device includes：Temperature control instrument, hot plate silk and thermoelectricity
Even, the control output end connection solid-state relay of the temperature control instrument, solid-state relay are opened by the heating of the first relay
The overtemperture control of dynamic signal and temperature control instrument and start or turn off hot plate silk；Temperature control instrument is by detecting thermoelectricity
Couple hot plate silk carries out temperature control regulation, the normally-closed contact of the protection outfan of the temperature control instrument in overtemperature
Disconnect and control output end output low level closes solid-state relay, the normally-closed contact of otherwise protection outfan is closed and controlled
The normal control and regulation signal of outfan output.
According to one embodiment of present invention, the voltage-controlled devices include that the pressure measuring instruments being connected with each other and pressure are passed
Sensor, the protection outfan of the pressure measuring instruments connect the protection outfan of the temperature control instrument；The pressure is surveyed
Amount instrument detects the pressure of the pressure transducer, and which protects outfan normally-closed contact to disconnect in pressure superpressure, otherwise, protects
Shield outfan normally-closed contact closure.
According to one embodiment of present invention, the water chemistry closed circuit unit includes that high-pressure pump opens and closes circuit, including：
3rd relay, output signal is effective in temperature, pressure protection, the circulating pump is in starting state and cooling water
When detection signal is effective, output allows the high level of high pressure pump startup；
High-pressure pump open-close on-off and the 4th relay；The high-pressure pump open-close on-off be connected to the 3rd relay and the 4th after
Between electrical equipment, when the high level of the 3rd relay is received, if controlled conducting so that the 4th relay by electricity, so as to
The high pressure pump startup outfan of the 4th relay output end connection exports effective high pressure pump activation signal, if the high-pressure pump is opened
Make and break is closed controlled closing or receives the low level of the 3rd relay, then so that the 4th relay power-off, so as to high pressure pump startup
Outfan exports invalid high pressure pump activation signal.
According to one embodiment of present invention, high-pressure pump opens and closes circuit also includes cooling water detection switch, circulating pump state
Switch, liquid level low switch；
The cooling water detection switch and temperature, pressure protect input to be connected on touching for supply voltage and the 3rd relay
Between point；
The circulating pump status switch and liquid level low switch are connected on the control end of the supply voltage and the 3rd relay
Between；
When circulating pump status switch and liquid level low switch are all closed, the closing of contact of the 3rd relay is controlled, described
When cooling water detection switch is closed and temperature, pressure protection input receives effective temperature, pressure protection signal, high-pressure pump
Activate switch closure will start high-pressure pump, and high pressure pump startup output signal is effective.
According to one embodiment of present invention, the water chemistry closed circuit unit also has cooling water detection output,
When cooling circuit is enabled, cooling water detection signal is exported by cooling water detection output；
Stress loading test unit also has cooling water detection input, connects the cooling water detection output, in order to
Process and/or show the cooling water detection signal.
According to one embodiment of present invention, the stress loading test unit includes：
Stress loading device, the stress loading and test for sample are executed；
Measure and control device, for being controlled according to instruction to the stress loading device, goes back the heating of Control release kettle unit
Keying.
According to one embodiment of present invention, the stress loading test unit is communicated by network interface connection with computer,
Experiment kettle unit and water chemistry closed circuit unit are by serial ports and compunication.
According to one embodiment of present invention, the Water flow detector judges cooling according to the discharge in cooling circuit
Whether loop enables, and generates invalid cooling water detection signal in condensate water cutoff or too small cooling water flow, triggers high pressure
Pump shuts down.
After using above-mentioned technical proposal, the present invention is had the advantages that compared to existing technology：
The present invention is electrically connected between each unit of pilot system, and each unit is provided with input/output terminal
Mouthful, mutually detect between unit that working condition, some unit export corresponding state in output port after going wrong, trigger phase
Other units of connection carry out protection act；
High pressure pump startup is allowed after circulation pump startup, high-pressure pump suction is prevented；Allow to start height after detecting cooling current
Press pump, prevents from testing the superheated vapor entrance room temperature loop feature that kettle is recycled；Experiment kettle heating is allowed after high pressure pump startup, is prevented
The only dry combustion method without liquid medium in experiment kettle；The high pressure of water chemistry closed circuit is triggered after the over-temp and over-pressure protection of experiment kettle unit
Pump shuts down, and prevents pressure from continuing to raise.
Description of the drawings
Structured flowcharts of the Fig. 1 for the stress corrosion (cracking) test linkage protection system of one embodiment of the invention；
Partial circuit theory structure schematic diagrams of the Fig. 2 for the water chemistry closed circuit unit of one embodiment of the invention；
Circulating pipeline structure schematic diagrams of the Fig. 3 for the water chemistry closed circuit unit of one embodiment of the invention；
Circuit principle structure schematic diagrams of the Fig. 4 for the experiment kettle unit of one embodiment of the invention.
Specific embodiment
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Elaborate a lot of details in order to fully understanding the present invention in the following description.But the present invention can be with
Much it is different from alternate manner described here to implement, those skilled in the art can be in the situation without prejudice to intension of the present invention
Under do similar popularization, therefore the present invention be not embodied as being limited by following public.
Referring to Fig. 1, the stress corrosion (cracking) test linkage protection system of the embodiment of the present invention, including：Stress loading test unit
1, test kettle unit 2 and water chemistry closed circuit unit 3.This is certainly not limited to, can also be set including other functions as needed
Standby.It is electrically connected between stress loading test unit 1, experiment kettle unit 2 and water chemistry closed circuit unit 3, in a certain function
After exception occurs in (part, equipment or circuit), related unit carries out linkage protection, prevents failure or dangerous situation from occurring,
Artificial burden can also be mitigated.
Stress loading test unit 1 is used for the control tested, for the concrete control content and mode of test can be with
It is existing control content and mode, for example, can includes：Stress loading, the test space movement behaviour for completing tested test specimens
Make, the broken type of sample judges and out of service, weighted platform moving range is detected and limits protection etc..Stress loading test unit 1
Have in order to export the computer heating control outfan X1 for heating keying signal, stress loading test unit 1 is by heating keying signal
Control release kettle unit 2, heating keying signal effectively, then Control release kettle unit 2 allow heating (premised on condition, then meet
Can heat when other impose a condition), heating keying signal is invalid, then Control release kettle unit 2 disconnects heating.
Kettle unit 2 is tested with order to receive the high pressure pump startup input X5 of high pressure pump activation signal, when high-pressure pump is opened
When dynamic, high pressure pump activation signal effectively, the startup of high-pressure pump by experiment kettle unit 2 temperature, pressure protection outfan X4 controls or
Person is controlled by other control systems or by manually controlling, specifically without limitation.Experiment kettle unit 2 also has computer heating control
Input X3, connects the computer heating control outfan X1 of stress loading test unit 1, receives heating keying signal.
Experiment kettle unit 2 has temperature control device and voltage-controlled devices, adjusts for carrying out the temperature control of test(ing) medium environment
And pressure monitoring, also including certainly testing kettle, experiment kettle provides corrosive medium environment to tested test specimens.Temperature control device is adding
When hot keying signal and high pressure pump activation signal are effective, heat to testing kettle, wherein any one invalidating signal all breaks
Open heating.Experiment kettle is heated premised on the startup of high-pressure pump, prevent from testing kettle dry combustion method or water chemistry closed circuit abnormal and
Experiment kettle continues heating.
Temperature control device and voltage-controlled devices are also respectively used for measuring the temperature and pressure of the corrosive medium of experiment kettle, generate temperature
Pressure protects output signal.Temperature, pressure protection output signal is changed into nothing in temperature control device or voltage-controlled devices institute measured value when transfiniting
Effect.Also there is experiment kettle unit 2 temperature, pressure to protect outfan X4, output temperature pressure to protect output signal.Temperature, pressure is protected
When shield output signal is effective, illustrate that the temperature and pressure of corrosive medium environment all without departing from set point, then can control water
Chemical cycle circuit units 3 make high pressure pump startup, and otherwise triggering water chemistry closed circuit unit 3 disconnects work, carries out protection dynamic
Make.
Referring to Fig. 3, water chemistry closed circuit unit 3 realizes the loop control of experiment kettle internal corrosion medium, real with connection
The circulation line of kettle is tested, and water storage box, circulating pump MG1, high-pressure pump M is provided with circulation line, Level Detection is provided with water storage box
Device, certainly, is also provided with other devices or part, the such as valve such as ball valve, check valve on circulation line, concrete connection
Relation may refer to Fig. 3, will not be described here.It (is high pressure in figure that circulating pump MG1 preferably compares high-pressure pump M on circulation line
Dosing pump) closer to water storage box outfan.Circulating pump MG1 provides the power of circulation line water circulation, and high-pressure pump M is experiment kettle
Interior media environment provides high pressure.
Water level height in liquid level detection device detection water storage box, generates liquid level low signal when detecting liquid level and being low, uses
Quit work to trigger circulating pump, only when liquid level is normal, circulating pump MG1 is allowed to start work, opens circulating pump and can open
Dynamic, again may be by other control systems control or by manually controlling, specifically without limitation.
Referring to Fig. 1 and Fig. 3, also there is on circulation line cooling circuit.Superheated vapor (vaporous Jie that experiment kettle is recycled
Matter) the room temperature loop feature of circulation line need to be returned after the cooling of cooling circuit, if not enabling cooling circuit, without
Overcooled superheated vapor is returned directly to room temperature loop feature, can cause parts damages.Thus in the embodiment of the present invention, cool back
Road is provided with Water flow detector, generates effective cooling water detection signal when cooling circuit is enabled, and in cooling circuit not
Invalid cooling water detection signal is generated when enabling.Cooling circuit enables that refer to being capable of normal stream supercooled water in cooling circuit
And cooling down high-temperature steam.
Specifically, according to the discharge in cooling circuit, Water flow detector can judge whether cooling circuit enables,
Invalid cooling water detection signal is generated when condensate water cutoff or too small cooling water flow, and triggering high-pressure pump shuts down.High pressure
The startup of pump M by cooling water normal premised on, prevent from testing the superheated vapor that recycles of kettle entering room temperature loop feature.Cool back
Heat exchanger and cooler can be provided with to realize liquefying, cool down on road.
There is water chemistry closed circuit unit 3 temperature, pressure to protect input X6, the temperature, pressure of connection experiment kettle unit 2
Protection outfan X4, and receive temperature, pressure protection output signal.High-pressure pump M only temperature, pressure protection output signal effectively,
(it can be startup to allow the state for starting to allow startup when circulating pump MG1 is in starting state and effective cooling water detection signal
Or non-started state, as long as but in non-started state when directly open the startup that high-pressure pump M can achieve high-pressure pump, do not allow
Then open high-pressure pump M will not also start during startup), can only otherwise close.Generally speaking, the startup of high-pressure pump M is with circulating pump MG1
Premised on startup, it is therefore prevented that high-pressure pump M suctions；The startup of high-pressure pump M by cooling water normal premised on, prevent test kettle recycle
Superheated vapor enter room temperature loop feature；High-pressure pump M operatings are automatically stopped after 2 overtemperature of experiment kettle unit, superpressure, prevent from testing
In kettle, pressure continues to raise.
High-pressure pump M generates effective high pressure pump activation signal when starting, water chemistry closed circuit unit 3 also has high-pressure pump
Start outfan X7, be connected to the high pressure pump startup input X5 of experiment kettle unit 2, and high pressure pump activation signal exported to experiment
Kettle unit 2.Premised on experiment kettle heating is started by high-pressure pump M, prevent from testing kettle dry combustion method or water chemistry closed circuit abnormal and
Experiment kettle continues heating.
In one embodiment, referring to Fig. 4, experiment kettle unit includes：Heating starting circuit, temperature, pressure protection output control
Circuit processed.
Heating starting circuit includes computer heating control input X3, the high-pressure pump being connected between supply voltage DC24V and ground
Start input X5, heater switch K2, K3 and the first relay RL3.Wherein, disconnect when heater switch K2 is closed for heating, plus
Close when thermal switch K3 is heating starting, can be controlled by external device (ED) or the system control or artificial control.Computer heating control
Input X3 receives effectively heating keying signal and high pressure pump startup input X5 receives effective high pressure pump startup letter
Number when, if conducting heater switch K2, K3, export heating starting signal, otherwise output heating shutdown signal.Conducting heater switch
K2, K3, supply voltage DC24V are transferred in the control end of the first relay RL3, control the closing of contact of the first relay RL3,
First relay RL3 exports heating starting signal, otherwise output heating shutdown signal.
The series connection of the input or outfan of the embodiment of the present invention refers to that the two ends of terminal are concatenated in circuit, and in signal
The conducting circuit part in series, open-circuit line part in series in invalidating signal when effectively.
Temperature, pressure protection output control circuit includes temperature control device, voltage-controlled devices, the second relay RL5 and temperature, pressure
Protection outfan X4.Temperature control device receives the heating starting signal that heating starting circuit passes over and is heated.Temperature control
Equipment detects heating-up temperature, and in heating-up temperature overtemperature, the protection outfan normally-closed contact of temperature control device disconnects, and otherwise closes；
Voltage-controlled devices detect that pressure medium, the protection outfan of voltage-controlled devices connect the protection outfan of temperature control device, and voltage-controlled devices exist
Protection outfan normally-closed contact is disconnected during the pressure signal superpressure for detecting so that the second of connection voltage-controlled devices protection outfan
Relay RL5 power-off, the temperature, pressure protection outfan X4 so as to be connected with the second relay RL5 outfans export invalid temperature
Degree pressure protection output signal, otherwise exports effective temperature, pressure protection output signal.
Temperature control device includes：Temperature control instrument, hot plate silk and thermocouple, the control output end of temperature control instrument
Connection solid-state relay SSR1, SSR2, SSR3, solid-state relay SSR1, SSR2, SSR3 are believed by the heating starting of the first relay
Number and temperature control instrument overtemperture control and start or turn off hot plate silk, solid-state relay SSR1, SSR2, SSR3 with temperature
Degree control instrument, the connection of the first relay and control mode can as needed depending on, may refer to Fig. 4, or often
Rule connected mode；Temperature control instrument carries out temperature control regulation by detecting thermocouple to hot plate silk, the temperature in overtemperature
The normally-closed contact of the protection outfan of degree control instrument disconnects and control output end output low level closes solid-state relay, no
Then the normally-closed contact of protection outfan is closed and the normal control and regulation signal of control output end output.
Voltage-controlled devices include the pressure measuring instruments being connected with each other and pressure transducer, the protection output of pressure measuring instruments
The protection outfan of end connection temperature control instrument, pressure measuring instruments detect the pressure of pressure transducer, and in pressure superpressure
When protection outfan normally-closed contact disconnect, otherwise close.
In a specific embodiment, experiment kettle is heated by the electric furnace heating wire for being enclosed in outside, the control and regulation of temperature
Controlled to adjust by artificial intelligence's temperature control instrument, while pressure, temperature control instrument in pressure transducer and pressure measuring instruments measurement kettle
Upper and lower limit protection numerical value can be set with pressure measuring instruments, when temperature in the kettle or pressure are beyond the protection domain for arranging, instrument
The cut-out heating of table output port, is protected.
Referring to Fig. 2, in one embodiment, water chemistry closed circuit unit includes that high-pressure pump opens and closes circuit.High-pressure pump is opened
Closed circuit can include：3rd relay RL2, high-pressure pump open-close on-off X13, X14 and the 4th relay RL1.
3rd relay RL2 temperature, pressure protection output signal effectively, circulating pump MG1 is in starting state and cooling water
When detection signal is effective, output allows the high level that high-pressure pump M starts.In the state of allowing high-pressure pump M to start, high-pressure pump is opened
M can achieve the startup of high-pressure pump M and (in embodiments of the present invention, start and be only real entrance working state of system, only open
Be open pump itself), otherwise, opening can not start high-pressure pump M.
High-pressure pump open-close on-off (X13, X14) is connected between the 3rd relay RL2 and the 4th relay RL1, is being received
To the 3rd relay RL2 high level when, if controlled conducting so that the 4th relay RL1 by electricity, so as to the 4th relay
The high pressure pump startup outfan X7 of RL1 outfans connection exports effective high pressure pump activation signal, if high-pressure pump open-close on-off is received
The low level of the 3rd relay RL2 is closed or is received in control, then so that the 4th relay RL1 power-off, so as to high pressure pump startup is defeated
Go out to hold X7 to export invalid high pressure pump activation signal.
Specifically, high-pressure pump opens and closes circuit also includes that cooling water detection switch X12, circulating pump status switch X15, liquid level are low
Switch X16.Cooling water detection switch X12 is connected on supply voltage DC24V and the 3rd relay with temperature, pressure protection input X6
Between the contact of device RL2；Circulating pump status switch X15 and liquid level low switch X16 are connected on the supply voltage DC24V and the 3rd
Between the control end of relay RL2；When circulating pump status switch X15 and liquid level low switch X16 are closed, the 3rd relay is controlled
The closing of contact of device RL2, closes in cooling water detection switch X12 and temperature, pressure protection input X6 receives effective temperature
During degree pressure protection signal, one end that supply voltage DC24V is transferred to high-pressure pump open-close on-off.
In Fig. 4, instrument 1, instrument 2 (temperature control instrument) 6,7 feet be switching value warning output pin, normal work shape
Under state, 6,7 feet are normally closed signal, and when temperature is beyond the upper and lower limit range alarm for arranging, 6,7 foot signals disconnect.3 (pressure of instrument
Force measuring instrument) 6,7 feet be switching value warning output pin, under normal operating conditions, 6,7 feet are normally closed signal, when pressure super
Go out setting upper and lower limit range alarm when, 6,7 foot signals disconnect.As seen from Figure 4, temperature or during pressure limit, 2 He of instrument
The warning output pin 6,7 of instrument 3 disconnects, the second relay RL5 power-off, cut-out be connected to solid-state relay SSR1, SSR2,
The thermal control signals of SSR3, disconnect heating, while temperature, pressure protection outfan X4 disconnects.In FIG, kettle unit is tested
X4 is connected to the X6 of water chemistry closed circuit in Fig. 2, finds out from Fig. 2 circuits, and X6 disconnects and will stop high-pressure pump operating.In experiment
After overtemperature, superpressure occurs in kettle unit 2, high-pressure pump M operatings are automatically stopped, prevent pressure from continuing to raise.
In Fig. 3, the solution in water storage box is extracted out by circulating pump MG1, and supply high-pressure pump M, another road supply feedwater chemistry all the way
Electrode is used for pH value determination, electrical conductivity, dissolved oxygen, dissolved hydrogen etc., in water chemistry closed circuit, first open the circulation pump MG1, then
High-pressure pump M is opened, high-pressure pump M suctions are prevented.In fig. 2, liquid level low switch X16 closures when having solution, circulation switch pump X15 are opened
The normally opened contact closure of dynamic circulating pump MG1, the 3rd relay RL2, high-pressure pump M start permission.When circulating pump MG1 does not start,
3rd relay RL2 not adhesives, are disconnected high-pressure pump M starting-up later times, and high-pressure pump M cannot start.
Water chemistry closed circuit unit 3 also has cooling water detection output X8, when cooling circuit is enabled, by cooling
Water detection output X8 exports cooling water detection signal；Stress loading test unit 1 also has cooling water detection input X9, even
Cooling water detection output X8 is connect, in order to process and/or show the cooling water detection signal.
Two cooling water detection switch signals are set in system, switch closure signals are effective when there are current.One input
To TT＆C system, interface prompt and respective handling is carried out；Another signal control high-pressure pump M start and stop, when cooling water detection switch
Allow to start high-pressure pump M during closure.Stop high-pressure pump M when without cooling water to start, it is therefore prevented that from experiment when high-pressure pump M operates
The superheated vapor that kettle is recycled does not enter room temperature loop feature through supercooling and causes parts damages.
Stress loading test unit 1 includes：Stress loading device, the stress loading and test for sample are executed；Observing and controlling
Device, is controlled according to instruction for corresponding force loading device, goes back the keying of the heating of Control release kettle unit 2.Instruction can be with
It is existing control program, is stored in measure and control device, operation can control.
Optionally, stress loading test unit 1 is communicated by network interface connection with computer, tests kettle unit 2 and water chemistry
Closed circuit unit 3 is by serial ports and compunication.
Circulation is caused between stress loading test unit 1, experiment kettle unit 2 and 3 each unit of water chemistry closed circuit unit
Linkage protection between pump MG1, high-pressure pump M, heater switch etc., reduces potential safety hazard.
It is appreciated that Fig. 1-4 is only used as example, reality can make certain change as needed, and for example switched changes
Move, should not be in this, as restriction.
Although the present invention is disclosed as above with preferred embodiment, which is not any this area for limiting claim
Technical staff without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore of the invention
The scope that protection domain should be defined by the claims in the present invention is defined.
Claims (10)
1. a kind of stress corrosion (cracking) test links protection system, it is characterised in that include：
Stress loading test unit, for the control that tests, which has the computer heating control output for exporting heating keying signal
Port；
Experiment kettle unit, with temperature control device and voltage-controlled devices；Experiment kettle unit has in order to receiving high pressure pump activation signal
High pressure pump startup input and the computer heating control input of the connection computer heating control output port；Temperature control device adds described
Heat to testing kettle when hot keying signal and high pressure pump activation signal are effective；Experiment kettle unit also has output temperature pressure
The temperature, pressure protection outfan of shield of trying hard to keep output signal, temperature, pressure protection output signal in temperature control device or voltage-controlled set
Standby institute measured value is changed into invalid when transfiniting；
Water chemistry closed circuit unit, with the circulation line for connecting the experiment kettle, is provided with water-retention on the circulation line
Case, circulating pump, high-pressure pump, are provided with liquid level detection device in the water storage box；The circulating pump is detected according to liquid level detection device
To liquid level low signal and close；There is on the circulation line cooling circuit, cooling circuit to be provided with Water flow detector,
Cooling circuit carries out generating effective cooling water detection signal when normal cooling works；Water chemistry closed circuit unit has reception
The temperature, pressure protection input of temperature, pressure protection output signal, the high-pressure pump only have in temperature, pressure protection output signal
Effect, the circulating pump allow to start when being in starting state and effective cooling water detection signal, generate effective high pressure during startup
Pump activation signal, otherwise closes, and water chemistry closed circuit unit also has the output high pressure pump activation signal and is connected to height
Press pump starts the high pressure pump startup outfan of input.
2. stress corrosion (cracking) test as claimed in claim 1 links protection system, it is characterised in that the experiment kettle unit bag
Include：
Heating starting circuit, defeated including the computer heating control input that is connected between supply voltage and ground, high pressure pump startup
Enter end, heater switch and the first relay；The computer heating control input receives effectively heating keying signal and high-pressure pump
When startup input receives effective high pressure pump activation signal, the first relay output heating if the heater switch is turned on
Enabling signal, otherwise output heating shutdown signal；
Temperature, pressure protects output control circuit, including the temperature control device, the voltage-controlled devices, the second relay and the temperature
Degree pressure protection outfan；The temperature control device detects heating-up temperature, the normally-closed contact of its normally-closed contact outfan in overtemperature
Disconnect, otherwise close；The protection outfan of the voltage-controlled devices is contacted the protection outfan of the temperature control device, described voltage-controlled sets
Make when the normally-closed contact of the standby protection outfan that voltage-controlled devices are made in superpressure disconnects or in temperature control device overtemperature the guarantor of temperature control device
When the normally-closed contact of shield outfan disconnects so that the second relay power-off of connection, so as to be connected with the second relay output end
Temperature, pressure protection outfan export invalid temperature, pressure protection output signal, otherwise export effective temperature, pressure
Protection output signal.
3. stress corrosion (cracking) test as claimed in claim 2 links protection system, it is characterised in that the temperature control device includes：
Temperature control instrument, hot plate silk and thermocouple, the control output end connection solid-state relay of the temperature control instrument, Gu
State relay is started by the overtemperture control of the heating starting signal and temperature control instrument of the first relay or turns off heating electricity
Stove silk；Temperature control instrument carries out temperature control regulation by detecting thermocouple to hot plate silk, the temperature in overtemperature
The normally-closed contact of the protection outfan of control instrument disconnects and control output end output low level closes solid-state relay, otherwise
The normally-closed contact closure of protection outfan and the normal control and regulation signal of control output end output.
4. stress corrosion (cracking) test as claimed in claim 3 links protection system, it is characterised in that the voltage-controlled devices include phase
The pressure measuring instruments for connecting and pressure transducer, the protection outfan of the pressure measuring instruments connect the temperature control
The protection outfan of instrument；The pressure measuring instruments detects the pressure of the pressure transducer, and which is protected in pressure superpressure
Shield outfan normally-closed contact disconnects, otherwise, protection outfan normally-closed contact closure.
5. stress corrosion (cracking) test as claimed in claim 1 or 2 links protection system, it is characterised in that the water chemistry circulation
Circuit units include that high-pressure pump opens and closes circuit, including：
3rd relay, in temperature, pressure protection, output signal is effective, the circulating pump is in starting state and cooling water is detected
When signal is effective, output allows the high level of high pressure pump startup；
High-pressure pump open-close on-off and the 4th relay；The high-pressure pump open-close on-off is connected to the 3rd relay and the 4th relay
Between, when the high level of the 3rd relay is received, if controlled conducting, so that the 4th relay is by electricity, so as to the 4th
The high pressure pump startup outfan of relay output end connection exports effective high pressure pump activation signal, if the high-pressure pump is opened and closed opening
Close controlled closing or receive the low level of the 3rd relay, then so that the 4th relay power-off, so as to high pressure pump startup is exported
The invalid high pressure pump activation signal of end output.
6. stress corrosion (cracking) test as claimed in claim 5 links protection system, it is characterised in that high-pressure pump opens and closes circuit and also wraps
Include cooling water detection switch, circulating pump status switch, liquid level low switch；
The cooling water detection switch and temperature, pressure protect input be connected on supply voltage and the 3rd relay contact it
Between；
The circulating pump status switch and liquid level low switch are connected between the control end of the supply voltage and the 3rd relay；
When circulating pump status switch and liquid level low switch are all closed, the closing of contact of the 3rd relay is controlled, in the cooling
When water detection switch is closed and temperature, pressure protection input receives effective temperature, pressure protection signal, high pressure pump startup
Switch closure will start high-pressure pump, and high pressure pump startup output signal is effective.
7. stress corrosion (cracking) test as claimed in claim 1 links protection system, it is characterised in that the water chemistry closed circuit
Unit also has cooling water detection output, when cooling circuit is enabled, exports cooling water inspection by cooling water detection output
Survey signal；
Stress loading test unit also has cooling water detection input, connects the cooling water detection output, in order to process
And/or show the cooling water detection signal.
8. stress corrosion (cracking) test as claimed in claim 1 links protection system, it is characterised in that the stress loading test sheet
Unit includes：
Stress loading device, the stress loading and test for sample are executed；
Measure and control device, for being controlled according to instruction to the stress loading device, goes back opening for Control release kettle unit heating
Close.
9. stress corrosion (cracking) test as claimed in claim 8 links protection system, it is characterised in that the stress loading test sheet
Unit is communicated by network interface connection with computer, and experiment kettle unit and water chemistry closed circuit unit are led to computer by serial ports
Letter.
10. stress corrosion (cracking) test as claimed in claim 1 links protection system, it is characterised in that the Water flow detector
Judge whether cooling circuit enables according to the discharge in cooling circuit, generate in condensate water cutoff or too small cooling water flow
Invalid cooling water detection signal, triggering high-pressure pump shut down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610941018.0A CN106370518B (en) | 2016-10-25 | 2016-10-25 | Stress corrosion test linkage protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610941018.0A CN106370518B (en) | 2016-10-25 | 2016-10-25 | Stress corrosion test linkage protection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106370518A true CN106370518A (en) | 2017-02-01 |
| CN106370518B CN106370518B (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610941018.0A Active CN106370518B (en) | 2016-10-25 | 2016-10-25 | Stress corrosion test linkage protection system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401780A (en) * | 2010-09-08 | 2012-04-04 | 中国科学院金属研究所 | High temperature and high pressure water circular corrosion experiment system with automatic control function |
| US20130133434A1 (en) * | 2011-11-30 | 2013-05-30 | King Fahd University Of Petroleum And Minerals | Stress corrosion cracking testing device |
| CN203241330U (en) * | 2013-04-07 | 2013-10-16 | 中国石油天然气集团公司 | Magnesium chloride stress corrosion testing device |
| CN206132502U (en) * | 2016-10-25 | 2017-04-26 | 上海凯尔孚应力腐蚀试验设备有限公司 | Experimental linkage protection system of stress corrosion |
-
2016
- 2016-10-25 CN CN201610941018.0A patent/CN106370518B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401780A (en) * | 2010-09-08 | 2012-04-04 | 中国科学院金属研究所 | High temperature and high pressure water circular corrosion experiment system with automatic control function |
| US20130133434A1 (en) * | 2011-11-30 | 2013-05-30 | King Fahd University Of Petroleum And Minerals | Stress corrosion cracking testing device |
| CN203241330U (en) * | 2013-04-07 | 2013-10-16 | 中国石油天然气集团公司 | Magnesium chloride stress corrosion testing device |
| CN206132502U (en) * | 2016-10-25 | 2017-04-26 | 上海凯尔孚应力腐蚀试验设备有限公司 | Experimental linkage protection system of stress corrosion |
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| 李军,何学东,韩兵: "HTR-10热气导管试验参数测量采集和保护系统" * |
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| CN106370518B (en) | 2023-04-28 |
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