CN108414360A - Simulate Deep-sea high voltage corrosion fatigue three point bending test device - Google Patents
Simulate Deep-sea high voltage corrosion fatigue three point bending test device Download PDFInfo
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- CN108414360A CN108414360A CN201810048920.9A CN201810048920A CN108414360A CN 108414360 A CN108414360 A CN 108414360A CN 201810048920 A CN201810048920 A CN 201810048920A CN 108414360 A CN108414360 A CN 108414360A
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- 230000007797 corrosion Effects 0.000 title claims abstract description 17
- 238000005260 corrosion Methods 0.000 title claims abstract description 17
- 238000013001 point bending Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000013535 sea water Substances 0.000 claims abstract description 26
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 239000002828 fuel tank Substances 0.000 claims description 14
- 239000003921 oil Substances 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 230000037237 body shape Effects 0.000 claims description 2
- 239000000295 fuel oil Substances 0.000 claims description 2
- 239000010720 hydraulic oil Substances 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 229910000845 Tc alloy Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 8
- 239000007769 metal material Substances 0.000 abstract description 4
- 238000009931 pascalization Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 3
- 238000009661 fatigue test Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000370738 Chlorion Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- 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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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Abstract
Simulation Deep-sea high voltage corrosion fatigue three point bending test device belongs to metallic material corrosion technical field of research.Device is made of water circulation system, sample fixing device, pressure head executing agency, fixed frame, temperature control box and control host；Water circle device connection is as follows：Seawater in water storage box is connected by the entrance of waterline and booster pump, and the outlet of booster pump is connected by the water inlet of waterline and the autoclave body of autoclave；The water outlet of autoclave autoclave body bottom is connect by waterline with water storage box；The present invention can carry out the three-point bending corrosion fatigue test of material in the case where simulating deep-sea high hydrostatic pressure environment, can regulate and control the movement velocity and motion mode of pressure head by controlling host, multiple waveforms (sine wave, square wave, triangular wave) can be used, fatigue loading is carried out to sample.The load that the present invention reduces backup rolls using partial pressure plate improves the reliability of experimental rig by dividing the fixation of plate and autoclave body.Of low cost, simple operation of the invention.
Description
Technical field
The invention belongs to metallic material corrosion technical field of research, and it is curved to be related to a kind of 3 points of simulated deep-sea environment corrosion fatigue
Bent experimental rig.
Background technology
Many offshore engineering structures and equipment such as marine drilling platform, seabed conveyance conduit, naval vessels, bathyscaph, underwater
Robot, structural member are made of metal material mostly.In marine environment, due to being moved by ocean current, deep sea pressure and
The caused mechanical load of equipment running, hardware is while the corrosion function of seawater, also by the shadow of alternate stress
It rings.Under Korrosionsmedium and alternating load synergistic effect, corrosion fatigue is the main failure forms of marine metal structural member, if
It is not controlled, easily leads to major accident, huge economic losses are caused to state and society.Currently, both at home and abroad to Yu Haiyang ring
The research of metal material three-point bending corrosion fatigue is mostly focused on atmospheric pressure environment under border, can only study neritic environment factor to gold
Belong to the influence of corrosion-fatigue failure behavior, and the effect of deep sea pressure and temperature to metal erosion fatigue cannot be considered.
Deep sea equipment premature breakdown would potentially result in the anticipation of hardware corrosion fatigue strength, economic waste is caused, when serious
It can cause casualties.Recent studies suggest that deep-sea hydrostatic pressure can influence in seawater the activity of chlorion and to metal watch
The permeability in face, until influencing corrosion of metal fatigue strength.Therefore, the corrosion developed under simulation deep-sea high hydrostatic pressure environment is tired
Labor three point bending test device has very important practical application request and learning value.
Invention content
The invention reside in overcoming the deficiencies of existing technologies, providing one kind can be 3 point with simulated deep-sea environment material corrosion fatigue
Bend test device, by water circulation system, sample fixing device, pressure head executing agency, fixed frame, temperature control box and control host groups
At；
Water circle device connection is as follows：Seawater in water storage box is connected by the entrance of waterline and booster pump, supercharging
The outlet of pump is connected by the water inlet of waterline and the autoclave body of autoclave；The water outlet of autoclave autoclave body bottom passes through water delivery
Pipeline is connect with water storage box；
Autoclave is made of autoclave autoclave body and autoclave covering；
It connects and is equipped with outlet valve in the waterline of autoclave autoclave body and water storage box；
It is coated with muff on the outside of waterline；
It is coated with thermal insulation board on the outside of autoclave autoclave body.
The connection of sample fixing device is as follows：Interior pressure-bearing rod has four, and top carries the head of a nail, and head of a nail position is solid by washer
Due to the outside of high pressure kettle cover, play the role of pressure-bearing.Interior pressure-bearing rod processes 5 degree of taper with kettle cover open connection position, outside
Side is coated with the mating rubber sealing boot of identical taper, ensures the leakproofness of autoclave and the stability of fixing device.Four pads
It encloses bottom and places one piece of stress buffer piece, buffer substrate tablet opening portion is identical as the internal diameter of washer, prevents stress concentration from leading to high pressure
Kettle cover deforms.Interior pressure-bearing rod lower end carries pin hole, is fixed by pin and interior bearing plate, bearing plate upper surface passes through welding procedure
It fixes two and seizes end on both sides by the arms, two bare terminal ends are placed in parallel, and top is equipped with identical cylindrical roller, by the examination of predetermined size when experiment
Sample is symmetrically placed on two idler wheels；
Interior pressure-bearing rod material is high-strength steel, and outside is sprayed with anti-decaying paint；Idler wheel material is stainless steel, and surface polishes smooth pressure
Head；
Two bare terminal ends are placed in parallel, and specimen size is strip rectangular specimen.
Pressure head executing agency is made of Oil pump electrical machinery, fuel tank, hydraulic push rod, connecting rod, pressure head.Pressure head passes through connecting rod and hydraulic pressure
Push rod connects, and hydraulic push rod is fixed on the side of fuel tank, and Oil pump electrical machinery is fixed in the other side, and hydraulic oil can be in hydraulic push rod, fuel tank
It is flowed between hydraulic pump；Pressure head is equipped with pressure sensor, and pressure signal can be in real time transported to control host, hydraulic push rod
It is equipped with pressure sensor, the movement of hydraulic stem is automatically stopped when high pressure kettle cover pressure-bearing is more than specified value.
Pressure head material is TC4 alloys, and bottom is arc-shaped, and bottom surface polishes smooth.
Fixed frame is made of pedestal, outer pressure-bearing rod, lower bearing plate, partial pressure plate, upper bearing plate；Outer pressure-bearing rod has four, point
It is not fixed on four pedestals, lower bearing plate is fixed on pressure-bearing rod bottom end, is connect with pedestal by nut, backup rolls pass through nut
It is fixed on lower bearing plate；Hydraulic push rod is double-sleeve structure, and outer sleeve is fixed on high pressure kettle cover by rubber sleeve, and inner sleeve can
It moves reciprocatingly along push rod axis；
Partial pressure plate is fixed on by upper lower nut in the middle part of outer pressure-bearing rod, and autoclave autoclave body outward opening edge projection passes through
Nut is fixed on partial pressure plate, and autoclave autoclave body bottom end is contacted with backup rolls upper surface；
Upper bearing plate is fixed on outer pressure-bearing rod top by nut, and the fuel tank in pressure head executive device is fixed on by nut
The lower surface of upper bearing plate.
Water tank is placed in temperature control box, seawater is housed in water tank, temperature control box can be adjusted in water tank in a certain range
The temperature of seawater；
The motion mode and the hydraulic pressure value in autoclave for controlling host regulation and control pressure head executing agency；
The method of described device, which is characterized in that function mode is as follows：First, the water storage box equipped with seawater is placed in temperature
It controls in case, when the ocean temperature in water storage box is consistent with the temperature that temperature control box is arranged, closes outlet valve, make the water in autoclave
It cannot flow into water storage box, after setting pressure value on control host, click booster pump switch key, booster pump opens
It is dynamic, seawater is extracted into from water storage box in autoclave, autoclave inner ram is equipped with pressure sensor, in real time by pressure value signal
It is transferred to control host, after pressure reaches setting value in autoclave, booster pump shuts down；At this point, setting waveform, frequency,
This four parameters of amplitude, load ratio after setting, click pressure head executing agency starting switch, and pressure head executing agency starts running,
Hydraulic push rod does back and forth movement under the driving of Oil pump electrical machinery along the axis of push rod, enable the pressure head being connect with hydraulic push rod to
Sample applies alternating load；The duration of runs and number operation cycle for controlling host real-time display pressure head executing agency, work as sample
It is broken or manually by push-down head executing agency when stopping key, pressure head executing agency shuts down；After the completion of experiment, open out
Water valve exhausts the water in autoclave, unloads connection autoclave autoclave body and divides the nut and backup rolls of plate, autoclave autoclave body is moved
It opens, removes sample.
The beneficial effects of the invention are as follows：
1, the water tank equipped with seawater is placed in temperature control box by the present invention, and the temperature of seawater is accurately controlled by the constant temperature of temperature control box
It spends (0-35 DEG C), the thermal insulation board outside autoclave autoclave body can prevent the variation of water temperature in kettle too fast, and water temperature is constant in holding kettle.
2, water circulation system of the invention can control the ingredient of seawater, pressure (0-20MPa), can be added according to requirement of experiment
Enter special solute, to simulate practical Service Environment.
3, the present invention can be carried out in the case where simulating deep-sea high hydrostatic pressure environment material three-point bending corrosion fatigue test, can
The movement velocity and motion mode for regulating and controlling pressure head by controlling host, it is right to can be used multiple waveforms (sine wave, square wave, triangular wave)
Sample carries out fatigue loading.
4, the present invention reduces the load of backup rolls using partial pressure plate, by dividing the fixation of plate and autoclave body, improves examination
The reliability of experiment device.
5, of low cost, simple operation of the invention.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is partial schematic diagram of the present invention.In figure：1 water storage box；2 seawater；3 hydraulic pipelines；4 outer pressure-bearing rods；5 bare terminal ends；
6 backup rolls；7 times bearing plates；8 pedestals；Bearing plate in 9；10 samples；11 pressure heads；12 connecting rods；Pressure-bearing rod in 13；14 partial pressure plates；15
High pressure kettle cover；16 hydraulic push rods；17 Oil pump electrical machineries；Bearing plate on 18；19 fuel tanks；20 autoclave autoclave bodies；21 booster pumps；22 water outlets
Valve；23 control hosts；24 temperature control boxs；25- fixing nuts；26- gaskets；27- stress buffer pieces；28- rubber sealing boots.
Specific implementation mode
As shown in Figure 1, the present invention provides a kind of simulation Deep-sea high voltage corrosion fatigue three point bending test device, recycled by water
System, sample fixing device, pressure head executing agency, fixed frame, temperature control box 24 and control host 23 form；
Water circle device connection is as follows：Seawater in the water storage box 1 of 18L passes through water-supply-pipe under the driving of booster pump 21
Road 3 flows into autoclave autoclave body 20.When opening outlet valve 22, the seawater in autoclave can pass through hydraulic pipeline under the effect of gravity
It flows into the water storage box 1 of lower, seawater circulates in realization water circle device；When closing outlet valve 22, seawater exists
Only import but no export in autoclave can control the hydrostatic pressure in autoclave by adjusting the inflow of seawater at this time.
3 outside of hydraulic pipeline is coated with muff, and heat-blocking action is played to the seawater of Bottomhole pressure；The water inlet end of water-supply-pipe
It is sealingly fastened in the upper end interface of autoclave autoclave body and lower end interface respectively with rubber sleeve with water outlet；
The autoclave kettle cover 15 that the autoclave autoclave body 20 and outer diameter that autoclave is 320mm by internal diameter are 580mm forms；High pressure
Kettle autoclave body inner space body shape is cylinder, bottom polishing camber, to reduce stress concentration；Autoclave autoclave body and kettle cover
Material be all made of TC4 alloys；
20 outside of autoclave autoclave body is coated with thermal insulation board.
The connection of sample fixing device is as follows：Interior pressure-bearing rod 13 is equipped with four, and diameter is 10mm；Top is with a diameter of
The head of a nail of 18mm, head of a nail position are fixed on the outside of high pressure kettle cover by washer, play the role of pressure-bearing.Interior pressure-bearing rod is opened with kettle cover
There is 5-10 degree tapers, outside to be coated with the rubber sealing boot of identical taper for mouthful connecting portion, ensure autoclave leakproofness and
The stability of fixing device.One piece of diameter 500mm circle stress buffer piece is placed in four washer bottoms, buffer substrate tablet opening portion with
The internal diameter of washer is identical, prevents stress concentration from high pressure kettle cover being caused to deform.13 outside of interior pressure-bearing rod is coated with sealing rubber cover, prevents
Water overflows autoclave when only pressurizeing.Interior pressure-bearing rod lower end carries pin hole, is fixed by pin and interior bearing plate 9,9 upper table of bearing plate
Face fixes two by welding procedure and seizes end 5 on both sides by the arms, and two bare terminal ends are placed in parallel, at a distance of 60mm；End top is seized on both sides by the arms equipped with a diameter of
The cylindrical roller of 5mm, when experiment, are symmetrically placed on two idler wheels by the sample 10 of predetermined size；
The material of interior pressure-bearing rod 13 is high-strength steel, and outside is sprayed with anti-decaying paint；
Pressure head executing agency is made of Oil pump electrical machinery 17, fuel tank 19, hydraulic push rod 16, connecting rod 12, pressure head 11.Pressure head 11 is logical
It crosses connecting rod to connect with hydraulic push rod 16, hydraulic push rod 16 is fixed on the side of fuel tank 19, and Oil pump electrical machinery 17, hydraulic pressure are fixed in the other side
Oil can flow between hydraulic push rod 16, fuel tank 18 and hydraulic pump 17；Hydraulic push rod 16 is double-sleeve structure, and outer sleeve passes through rubber
Gum cover is fixed on high pressure kettle cover, and inner sleeve can move reciprocatingly along push rod axis.Pressure head 11 is equipped with pressure sensor, can will press
Force signal is transported to control host in real time, and hydraulic push rod 16 is equipped with pressure sensor, when high pressure kettle cover pressure-bearing is more than 800MPa
The movement of hydraulic push rod is automatically stopped when value.
It is arc-shaped that pressure head 11, which uses TC4 alloys, bottom, and bottom surface polishes smooth.
Fixed frame is made of pedestal 8, outer pressure-bearing rod 4, lower bearing plate 7, partial pressure plate 14, upper bearing plate 18；Outer pressure-bearing rod 4 is set
There are four, be individually fixed on four pedestals 8, lower bearing plate 7 is fixed on 4 low side of outer pressure-bearing rod, is connected by nut and pedestal 8
It connects, backup rolls 8 are fixed on by nut on lower bearing plate 7；
Partial pressure plate 14 is fixed on 3 middle part of outer pressure-bearing rod, 20 outward opening peripheral ledge of autoclave autoclave body by upper lower nut
Divide and be fixed on partial pressure plate 14 by nut, 20 bottom end of autoclave autoclave body is contacted with 6 upper surface of backup rolls；
Upper bearing plate 18 is fixed on 4 top of outer pressure-bearing rod by nut, and the fuel tank 19 in pressure head executive device passes through nut
It is fixed on the lower surface of bearing plate 18.
Water tank 1 is placed in temperature control box 24, seawater 2 is housed in water tank, temperature control box 24 can adjust storage in a certain range
The temperature of seawater in water tank；
Control the motion mode and the hydraulic pressure value in autoclave that host 23 regulates and controls pressure head executing agency；
System operation mode is as follows：
First, the water storage box 1 equipped with seawater 2 is placed in temperature control box 24, waits for the ocean temperature in water storage box 1 and temperature control box
When the temperature of setting is consistent, outlet valve 22 is closed, the water in autoclave is made to cannot flow into water storage box 1, on control host
After setting pressure value, booster pump switch key is clicked, booster pump 21 starts, and seawater is extracted into autoclave from water storage box 1
It is interior, it is equipped with pressure sensor in autoclave, can pressure value signal be transferred to control host in real time, when pressure reaches in autoclave
After setting value, booster pump shuts down.At this point, waveform, frequency, amplitude, load ratio this four parameters can be set, after setting,
Pressure head executing agency starting switch is clicked, pressure head executing agency starts running, and hydraulic push rod 16 is under the driving of Oil pump electrical machinery 17
Axis along push rod does back and forth movement, and the pressure head being connect with hydraulic push rod 11 is enable to apply alternating load to sheet metal specimens 10.
Control host can real-time display pressure head executing agency the duration of runs and number operation cycle, when sample fracture or artificial by pushing
When stopping key of executing agency of head, pressure head executing agency shut down.After the completion of experiment, outlet valve 22 is opened, high pressure is exhausted
Water in kettle, autoclave autoclave body can be moved away by unloading connection autoclave autoclave body and dividing the nut of plate and backup rolls, remove sample.
Claims (10)
1. simulating Deep-sea high voltage corrosion fatigue three point bending test device, it is characterised in that：
Water circle device connection is as follows：Water storage box is placed in temperature control box, seawater is housed in water storage box, water storage box passes through waterline
It is connect with the entrance of booster pump, the outlet of booster pump is connected by the water inlet of waterline and the autoclave body of autoclave；Autoclave
The water outlet of autoclave body bottom is connect by waterline with water storage box；Autoclave is made of autoclave autoclave body and autoclave covering；
It connects and is equipped with outlet valve in the waterline of autoclave autoclave body and water storage box；
The connection of sample fixing device is as follows：Interior pressure-bearing rod is equipped with four；The head of a nail carried at the top of interior pressure-bearing rod, head of a nail position are logical
The outside that washer is fixed on high pressure kettle cover is crossed, pressure-bearing is played the role of；It is coated with sealing rubber cover on the outside of interior pressure-bearing rod, prevents from pressurizeing
When water overflow autoclave；Interior pressure-bearing rod lower end carries pin hole, is fixed by pin and interior bearing plate, bearing plate upper surface passes through weldering
It connects technique and fixes two and seize end on both sides by the arms, two bare terminal ends are placed in parallel；It seizes end top on both sides by the arms and cylindrical roller is housed, by sample pair when experiment
Title is positioned on two idler wheels；
Pressure head executing agency is made of Oil pump electrical machinery, fuel tank, hydraulic push rod, connecting rod, pressure head；Pressure head passes through connecting rod and hydraulic push rod
Connection, hydraulic push rod are fixed on the side of fuel tank, and Oil pump electrical machinery is fixed in the other side of fuel tank, and hydraulic oil is in hydraulic push rod, fuel tank
It is flowed between hydraulic pump；Hydraulic push rod is double-sleeve structure, and outer sleeve is fixed on high pressure kettle cover by rubber sleeve, and inner sleeve can
It moves reciprocatingly along push rod axis；Pressure head is equipped with pressure sensor, and pressure signal is transported to control host in real time；Control master
The motion mode and the hydraulic pressure value in autoclave that machine regulates and controls pressure head executing agency；
Fixed frame is made of pedestal, outer pressure-bearing rod, lower bearing plate, partial pressure plate, upper bearing plate；Outer pressure-bearing rod is equipped with four, respectively
It is fixed on four pedestals, lower bearing plate is fixed on outer pressure-bearing rod bottom end, is connect with pedestal by nut, backup rolls pass through nut
It is fixed on lower bearing plate；Partial pressure plate is fixed on by upper lower nut in the middle part of outer pressure-bearing rod, and autoclave autoclave body outward opening edge is prominent
Go out part to be fixed on partial pressure plate by nut, autoclave autoclave body bottom end is contacted with backup rolls upper surface；Upper bearing plate passes through spiral shell
Mother is fixed on outer pressure-bearing rod top, and the fuel tank in pressure head executive device is fixed on the lower surface of upper bearing plate by nut.
2. device according to claim 1, it is characterised in that：
It is coated with muff on the outside of hydraulic pipeline, heat-blocking action is played to the seawater of Bottomhole pressure；The water inlet end of water-supply-pipe and go out
Water end (W.E.) is sealingly fastened in the upper end interface of autoclave autoclave body and lower end interface respectively with rubber sleeve.
3. device according to claim 1, it is characterised in that：
Autoclave autoclave body inner space body shape is cylinder, bottom polishing camber, to reduce stress concentration.
4. device according to claim 1, it is characterised in that：
It is coated with thermal insulation board on the outside of autoclave autoclave body.
5. device according to claim 1, it is characterised in that：
Interior pressure-bearing rod with kettle cover open connection position there is 5-10 degree tapers, outside to be coated with the rubber sealing boot of identical taper,
Ensure the stability of the leakproofness and fixing device of autoclave.
6. device according to claim 1, it is characterised in that：
Round stress buffer piece is placed in four washer bottoms, and round stress buffer piece opening portion is identical as the internal diameter of washer, prevents
Only stress concentration causes high pressure kettle cover to deform.
7. device according to claim 1, it is characterised in that：
It is sprayed with anti-decaying paint on the outside of interior pressure-bearing rod.
8. device according to claim 1, it is characterised in that：
It is arc-shaped that pressure head, which uses TC alloys, bottom, and bottom surface polishes smooth.
9. device according to claim 1, it is characterised in that：Hydraulic push rod is equipped with pressure sensor, when high pressure kettle cover is held
The movement of hydraulic push rod is automatically stopped when pressing more than 800MPa values.
10. the method for application such as claim 1-9 any one described devices, which is characterized in that function mode is as follows：
First, the water storage box equipped with seawater is placed in temperature control box, waits for the temperature of the ocean temperature and temperature control box setting in water storage box
When spending consistent, outlet valve is closed, the water in autoclave is made to cannot flow into water storage box, pressure value is set on control host
Later, booster pump switch key is clicked, pump startup is pressurized, seawater is extracted into from water storage box in autoclave, autoclave inner ram
It is equipped with pressure sensor, pressure value signal is transferred to control host in real time, after pressure reaches setting value in autoclave, is increased
Press pump shuts down；At this point, setting waveform, frequency, amplitude, load ratio this four parameters, after setting, click pressure head and execute machine
Structure starting switch, pressure head executing agency start running, and hydraulic push rod is done back and forth under the driving of Oil pump electrical machinery along the axis of push rod
Movement enables the pressure head being connect with hydraulic push rod to apply alternating load to sample；It controls host real-time display pressure head and executes machine
The duration of runs of structure and number operation cycle, when sample fracture or manually by push-down head executing agency when stopping key, pressure head
Executing agency shuts down；After the completion of experiment, open outlet valve, exhaust the water in autoclave, unload connection autoclave autoclave body and
The nut and backup rolls for dividing plate, autoclave autoclave body is moved away, sample is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810048920.9A CN108414360A (en) | 2018-01-18 | 2018-01-18 | Simulate Deep-sea high voltage corrosion fatigue three point bending test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810048920.9A CN108414360A (en) | 2018-01-18 | 2018-01-18 | Simulate Deep-sea high voltage corrosion fatigue three point bending test device |
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| CN108414360A true CN108414360A (en) | 2018-08-17 |
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| CN201810048920.9A Pending CN108414360A (en) | 2018-01-18 | 2018-01-18 | Simulate Deep-sea high voltage corrosion fatigue three point bending test device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186868A (en) * | 2018-09-18 | 2019-01-11 | 邓根水 | For polar region submarine fishing robot sealing property detection device |
| CN109374428A (en) * | 2018-08-27 | 2019-02-22 | 南方科技大学 | A kind of flexible pipe cable Apparatus for Bending at low-temp |
| CN109406269A (en) * | 2018-09-28 | 2019-03-01 | 华南理工大学 | Hold the natural exposing experimental provision and method of mount components |
| WO2020174068A1 (en) | 2019-02-28 | 2020-09-03 | Onderzoekscentrum Voor Aanwending Van Staal N.V. | Testing device for corrosion-fatigue test specimen |
| CN111929147A (en) * | 2020-07-13 | 2020-11-13 | 中国石油天然气集团有限公司 | B-type sleeve bearing capacity inspection method for repairing circumferential weld defects of oil and gas pipeline |
| CN112362563A (en) * | 2020-10-29 | 2021-02-12 | 中国石油天然气集团有限公司 | Device for evaluating corrosion resistance of petroleum pipe in oil-water coupling medium |
| CN112577822A (en) * | 2020-12-09 | 2021-03-30 | 江苏科技大学 | Corrosion fatigue crack detection system and use method thereof |
| CN114323973A (en) * | 2021-12-13 | 2022-04-12 | 中国航发北京航空材料研究院 | Submersible observation window pressure resistance test device and method |
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| CN109374428A (en) * | 2018-08-27 | 2019-02-22 | 南方科技大学 | A kind of flexible pipe cable Apparatus for Bending at low-temp |
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| CN109186868B (en) * | 2018-09-18 | 2021-03-26 | 温州众鑫机械科技有限公司 | Sealing performance detection device for polar region seabed fishing robot |
| CN109406269A (en) * | 2018-09-28 | 2019-03-01 | 华南理工大学 | Hold the natural exposing experimental provision and method of mount components |
| WO2020174068A1 (en) | 2019-02-28 | 2020-09-03 | Onderzoekscentrum Voor Aanwending Van Staal N.V. | Testing device for corrosion-fatigue test specimen |
| NL2022649B1 (en) | 2019-02-28 | 2020-09-08 | Onderzoekscentrum Voor Aanwending Van Staal N V | Testing device for corrosion-fatigue test specimen |
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| CN111929147A (en) * | 2020-07-13 | 2020-11-13 | 中国石油天然气集团有限公司 | B-type sleeve bearing capacity inspection method for repairing circumferential weld defects of oil and gas pipeline |
| CN112362563A (en) * | 2020-10-29 | 2021-02-12 | 中国石油天然气集团有限公司 | Device for evaluating corrosion resistance of petroleum pipe in oil-water coupling medium |
| CN112362563B (en) * | 2020-10-29 | 2023-11-28 | 中国石油天然气集团有限公司 | Device for evaluating corrosion resistance of petroleum pipe in oil-water coupling medium |
| CN112577822A (en) * | 2020-12-09 | 2021-03-30 | 江苏科技大学 | Corrosion fatigue crack detection system and use method thereof |
| CN114323973A (en) * | 2021-12-13 | 2022-04-12 | 中国航发北京航空材料研究院 | Submersible observation window pressure resistance test device and method |
| CN114778318A (en) * | 2022-06-27 | 2022-07-22 | 南通富顺柜业制造有限公司 | Container body part strength detection equipment |
| CN117629771A (en) * | 2024-01-25 | 2024-03-01 | 深圳大学 | Device and method for testing fatigue strength of in-situ rock by simulating seawater corrosion |
| CN117629771B (en) * | 2024-01-25 | 2024-04-09 | 深圳大学 | Device and method for testing fatigue strength of in-situ rock by simulating seawater corrosion |
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