CN202420963U - Sealed corrosive environment simulator for bending fatigue tester - Google Patents
Sealed corrosive environment simulator for bending fatigue tester Download PDFInfo
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- CN202420963U CN202420963U CN2012200085627U CN201220008562U CN202420963U CN 202420963 U CN202420963 U CN 202420963U CN 2012200085627 U CN2012200085627 U CN 2012200085627U CN 201220008562 U CN201220008562 U CN 201220008562U CN 202420963 U CN202420963 U CN 202420963U
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- seal groove
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Abstract
A sealed corrosive environment simulator for a bending fatigue tester is characterized in that a sealed tank is provided with sample holes on two sides, the middle of a fatigue sample is inserted into the sealed tank through the sample holes, and two ends of the fatigue sample are fixed on the bending fatigue tester through spring chucks of the bending fatigue tester; an adjustable valve is mounted at the top of the sealed tank, and an electromagnetic valve and a first liquid storage tank are sequentially connected to the upper end of the adjustable valve; a first liquid level sensor is mounted at the bottom of the first liquid storage tank; a plastic guide pipe is connected to a liquid discharge hole at the bottom of the sealed tank and extends into a second liquid storage tank; a second liquid level sensor is mounted at the bottom of the second liquid storage tank; and a liquid return pipe and a liquid delivery pipe are inserted into the first liquid storage tank and the second liquid storage tank respectively, and the liquid return pipe is connected with the liquid delivery pipe through a liquid delivery pump. The sealed corrosive environment simulator is capable of simulating corrosive solution inside a sealed circulating system to facilitate simulation of the corrosive environment, data of the fatigue corrosion test is more accurate and reliable, and the sealed corrosive environment simulator is also convenient for observation and analysis on fatigue fractures and has no surroundings pollution and low test cost.
Description
Technical field
The utility model relates to a kind of corrosion fatigue test device, relates in particular to a kind of auxiliary equipment of fatigue bending machine.
Background technology
Fatigue is under the effect repeatedly of stress or strain, the performance variation that causes the metal material cracking or destroy.Fatigure failure is the principal mode of component of machine initial failure.Actual engineering structure, commercial unit and all kinds of bearing carrier all are on active service in certain environment.Most of environments for use all are different from testing laboratory's environment, all have corrosivity in various degree.The fatigure failure that member produced mostly with the environmental correclation of being on active service, the active time before the fatigure failure shortens with the corrosive enhancing of surrounding medium, i.e. the corrosion destruction that accelerates fatigue.At this moment, fatigure failure takes place under pulsating stress and corrosion environment synergy, has promptly produced corrosion fatigue.
Corrosion fatigue is the effect that structural member had both received pulsating stress, receives the erosion of corrosion environment again, is a kind of even more serious physical disturbance form under both act synergistically, and is the various serious problems that structure faced of bearing cyclic loading in the engineering practice.Such as ocean structure, petrochemical equipment, aircaft configuration etc., Chang Yin receives the compound action generation fatigure failure of cyclic loading and corrosion environment, often causes catastrophic failure.Say that strictly the most fatigure failures that run in the actual engineering all belong to corrosion fatigue." pure " fatigue not affected by environment only possibly appear under the vacuum condition.Usually, at identical stress level, the corrosion fatigue life of material far is shorter than the general fatigue life-span, often will shorten manyfold.Therefore, in order to guarantee the military service security and the reliability of structure, need test the Corrosion Fatigue Properties of material under different etching conditions.
At present; The researcher studies the corrosion fatigue test device; Patent publication No. is that the patent of invention " a kind of rotating and bending corrosion fatigue testing device " of CN101221108A discloses a kind of semi-girder rotating and bending corrosion fatigue testing device; But this device carries out in the environment that opens wide fully the simulation of corrosion environment; Not only cause etchant solution to splash, cause the loss of etchant solution and contaminated simultaneously, thereby can't control accurately etching condition to the corrosion of test unit on every side.This device does not have the automatic hold function of off-test simultaneously, lacks after the off-test the effective protection to sample.
The utility model content
The purpose of the utility model provides a kind of seal erosion environment simulator that is used for fatigue bending machine; This device is used for fatigue bending machine, and the simulation etchant solution is in the sealed circulation system, can conveniently simulate corrosion environment; Make the fatigue corrosion test for data more accurately and reliably; Convenient observation and analysis to fatigue fracture can not pollute surrounding environment simultaneously yet, and experimentation cost is low.
The utility model solves the technical scheme that its technical matters adopted: a kind of seal erosion environment simulator that is used for fatigue bending machine, and its composition is:
The both sides of seal groove have sample aperture, and insert in the seal groove through sample aperture at fatigue testing specimen middle part, and the two ends that fatigue testing specimen stretches out seal groove are fixed on the fatigue bending machine through the collet chuck of fatigue bending machine;
The top of seal groove is equipped with adjustable valve, and the adjustable valve upper end connects solenoid valve, fluid reservoir one successively through plastic catheter; The bottom of fluid reservoir one is equipped with liquid level sensor one; Solenoid valve is electrically connected with automatic stop switch on the fatigue bending machine;
The fluid hole of seal groove bottom connects plastic catheter, and this plastic catheter stretches in the fluid reservoir two; The bottom of fluid reservoir two is equipped with liquid level sensor two;
Be inserted with liquid back pipe, liquid pushing tube respectively in described fluid reservoir one, the fluid reservoir two, link to each other through infusion pump between liquid back pipe and the liquid pushing tube;
Described liquid level sensor one, liquid level sensor two, infusion pump all are electrically connected with Programmable Logic Controller, form the infusion pump control system.
The course of work and the principle of the utility model are:
The etchant solution that configures is injected in the fluid reservoir two; Make the fatigue testing specimen minimum cross section be positioned at adjustable valve under; Start fatigue tester, will required load be loaded into the two ends of fatigue testing specimen through collet chuck, while infusion pump control system and solenoid valve are opened.
Liquid level sensor one detects the liquid storage amount subcritical state of fluid reservoir one, and infusion pump starts automatically, from fluid reservoir two, pumps into etchant solution in the fluid reservoir one; After in the fluid reservoir one etchant solution being arranged, solenoid valve and the adjustable valve of etchant solution through opening drops onto on the fatigue testing specimen minimum cross section of high speed rotating, makes fatigue testing specimen in the corrosion environment of seal groove, carry out crooked corrosion fatigue test.Because the pump liquid speed of infusion pump is greater than the dropleting speed of etchant solution; Liquid storage amount in the fluid reservoir one can increase sharply; And the liquid storage amount in the fluid reservoir two can reduce rapidly, detects the liquid storage amount subcritical state in the fluid reservoir two until liquid level sensor two, and infusion pump quits work.The etchant solution that drops onto on the fatigue testing specimen drops onto the seal groove bottom again; Fluid hole and plastic catheter through the seal groove bottom flow in the fluid reservoir two; Detect the liquid storage amount subcritical state in the fluid reservoir one until liquid level sensor one; Infusion pump starts once more, forms the sealed circulation system of etchant solution.Thereby in the entire test, fatigue testing specimen all makes an experiment in the seal erosion environment in seal groove.
When sample fractureed, the automatic stop switch of fatigue tester broke off, the testing machine auto stop, and solenoid valve also is closed simultaneously, and etchant solution stops to fall from adjustable valve, and whole test finishes automatically.
Compared with prior art, the beneficial effect of the utility model is:
One, in the process of the test; Etchant solution relies on gravity to fall the sample minimum cross section of high speed rotating from adjustable valve, and the corrosive liquid that is scattered collects in seal groove and around can not splashing on other equipment, also can be by other contaminating impurities in the surrounding environment; Thereby avoided surrounding devices to be corroded; Also avoided simultaneously the loss and the composition of etchant solution to change, more accurate to the simulation of corrosion working conditions with control, make the fatigue corrosion test for data more accurately and reliably.
Two, because the etchant solution under the air-proof condition can not lose and composition changes; Solution is through two fluid reservoirs, infusion pump and liquid level sensors one, liquid level sensor two; And Programmable Logic Controller controls, and forms a circulation system, realized the auto recycling of etchant solution; Greatly reduce the use amount of etchant solution, reduced experimentation cost.
Three, through being installed on the solenoid valve of adjustable valve top, the Control Circulation passage opening and closing automatically.When sample fractures, during off-test, solenoid valve cuts out automatically; Etchant solution stops to drop onto on the sample; Avoided the further corrosion of etchant solution to fracture surface of sample, can fine protection fatigue testing specimen fracture apperance, and then make things convenient for observation and the analysis of later stage to fatigue fracture.
Above-mentioned seal groove is made up of knock-down upper and lower two and half grooves, connects through screw rod between two and half grooves.
Like this, the installation and removal of seal groove are all very convenient before and after the test.
Above-mentioned fatigue testing specimen and sample aperture joint place are equipped with O-ring seal.
Like this, further strengthened the sealing effectiveness of seal groove, and for the sample of different size, the O-ring seal that replaceable coupling is different, and need not seal groove and whole device are transformed.
Near the fluid hole place of above-mentioned seal groove bottom and to recessed.
Like this, in the process of the test, the etchant solution in the seal groove can be more convenient, fast, flow into downwards in the fluid reservoir two neatly.
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 be the utility model embodiment seal groove (removing plastic catheter) look up enlarged diagram.
Embodiment
Embodiment
Fig. 1-2 illustrates; A kind of embodiment of the utility model is: a kind of seal erosion environment simulator that is used for fatigue bending machine; Its composition is: the both sides of seal groove 4 have sample aperture; Insert in the seal groove 4 through sample aperture at fatigue testing specimen 2 middle parts, and the two ends that fatigue testing specimen 2 stretches out seal groove 4 are fixed on the fatigue bending machine through the collet chuck 1 of fatigue bending machine;
The top of seal groove 4 is equipped with adjustable valve 5, and adjustable valve 5 upper ends connect solenoid valve 6, fluid reservoir 1 successively through plastic catheter 7; The bottom of fluid reservoir 1 is equipped with liquid level sensor 1; Solenoid valve 6 is electrically connected with automatic stop switch on the fatigue bending machine;
The fluid hole 4A of seal groove 4 bottoms connects plastic catheter 7, and this plastic catheter 7 stretches in the fluid reservoir 2 11; The bottom of fluid reservoir 2 11 is equipped with liquid level sensor 2 12;
Be inserted with liquid back pipe 7A, liquid pushing tube 7B respectively in described fluid reservoir 1, the fluid reservoir 2 11, link to each other through infusion pump 10 between liquid back pipe 7A and the liquid pushing tube 7B;
Described liquid level sensor 1, liquid level sensor 2 12, infusion pump 10 all are electrically connected with Programmable Logic Controller, form the infusion pump control system.
The seal groove 4 of present embodiment is made up of knock-down upper and lower two and half grooves, connects through screw rod 14 between two and half grooves;
The fatigue testing specimen 2 and the sample aperture joint place of present embodiment are equipped with O-ring seal 3.
Near the fluid hole place of seal groove 4 bottoms of present embodiment and to recessed.
Claims (4)
1. seal erosion environment simulator that is used for fatigue bending machine, its composition is:
The both sides of seal groove (4) have sample aperture, and insert in the seal groove (4) through sample aperture at fatigue testing specimen (2) middle part, and the two ends that fatigue testing specimen (2) stretches out seal groove (4) are fixed on the fatigue bending machine through the collet chuck (1) of fatigue bending machine;
The top of seal groove (4) is equipped with adjustable valve (5), and adjustable valve (5) upper end connects solenoid valve (6), fluid reservoir one (8) successively through plastic catheter (7); The bottom of fluid reservoir one (8) is equipped with liquid level sensor one (9); Solenoid valve (6) is electrically connected with automatic stop switch on the fatigue bending machine;
The fluid hole (4A) of seal groove (4) bottom connects plastic catheter (7), and this plastic catheter (7) stretches in the fluid reservoir two (11); The bottom of fluid reservoir two (11) is equipped with liquid level sensor two (12);
Be inserted with liquid back pipe (7A), liquid pushing tube (7B) respectively in described fluid reservoir one (8), the fluid reservoir two (11), link to each other through infusion pump (10) between liquid back pipe (7A) and the liquid pushing tube (7B);
Described liquid level sensor one (9), liquid level sensor two (12), infusion pump (10) all are electrically connected with Programmable Logic Controller, form the infusion pump control system.
2. a kind of seal erosion environment simulator that is used for fatigue bending machine according to claim 1 is characterized in that: described seal groove (4) is made up of knock-down upper and lower two and half grooves, connects through screw rod (14) between two and half grooves.
3. a kind of seal erosion environment simulator that is used for fatigue bending machine according to claim 1 is characterized in that: described fatigue testing specimen (2) is equipped with O-ring seal (3) with the sample aperture joint place.
4. a kind of seal erosion environment simulator that is used for fatigue bending machine according to claim 1 is characterized in that: near the fluid hole place of said seal groove (4) bottom and to recessed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200085627U CN202420963U (en) | 2012-01-10 | 2012-01-10 | Sealed corrosive environment simulator for bending fatigue tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200085627U CN202420963U (en) | 2012-01-10 | 2012-01-10 | Sealed corrosive environment simulator for bending fatigue tester |
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| Publication Number | Publication Date |
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| CN202420963U true CN202420963U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200085627U Expired - Fee Related CN202420963U (en) | 2012-01-10 | 2012-01-10 | Sealed corrosive environment simulator for bending fatigue tester |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698203A (en) * | 2013-12-12 | 2014-04-02 | 中国航空工业集团公司北京航空材料研究院 | Sheet material corrosion device for fatigue crack propagation test |
| CN103837465A (en) * | 2014-03-07 | 2014-06-04 | 大连交通大学 | Drip-feed type corrosion environment simulation device for flexural fatigue test |
| CN104764656A (en) * | 2015-03-31 | 2015-07-08 | 中国船舶重工集团公司第七二五研究所 | Tapered locking sealing device of test sample used for axial corrosion test |
| CN105203448A (en) * | 2014-06-27 | 2015-12-30 | 宝山钢铁股份有限公司 | Testing device and method for simulating solar water heater inner barrel accelerated corrosion |
| CN106404554A (en) * | 2016-10-19 | 2017-02-15 | 辽宁石油化工大学 | Test apparatus for research on laws of influence of sulfate reducing bacteria on stress corrosion cracking of metal |
| CN106442181A (en) * | 2016-09-16 | 2017-02-22 | 天津大学 | Fatigue test device for marine riser external corrosion |
| CN113390776A (en) * | 2021-04-12 | 2021-09-14 | 东莞材料基因高等理工研究院 | Corrosion test device and corrosion test method |
| CN113466121A (en) * | 2021-07-21 | 2021-10-01 | 石家庄铁道大学 | Test method of middle-corroded concrete filled steel tube test piece |
| CN114252346A (en) * | 2021-12-07 | 2022-03-29 | 西南交通大学 | Interference fit structure rotary bending micro-motion fatigue test device |
| CN115962903A (en) * | 2023-03-16 | 2023-04-14 | 廊坊双飞碟簧有限公司 | Disc spring elastic coefficient detection device |
-
2012
- 2012-01-10 CN CN2012200085627U patent/CN202420963U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698203A (en) * | 2013-12-12 | 2014-04-02 | 中国航空工业集团公司北京航空材料研究院 | Sheet material corrosion device for fatigue crack propagation test |
| CN103698203B (en) * | 2013-12-12 | 2016-03-30 | 中国航空工业集团公司北京航空材料研究院 | A kind of light sheet material corrosion device for fatigue crack propagation test |
| CN103837465A (en) * | 2014-03-07 | 2014-06-04 | 大连交通大学 | Drip-feed type corrosion environment simulation device for flexural fatigue test |
| CN105203448A (en) * | 2014-06-27 | 2015-12-30 | 宝山钢铁股份有限公司 | Testing device and method for simulating solar water heater inner barrel accelerated corrosion |
| CN104764656A (en) * | 2015-03-31 | 2015-07-08 | 中国船舶重工集团公司第七二五研究所 | Tapered locking sealing device of test sample used for axial corrosion test |
| CN104764656B (en) * | 2015-03-31 | 2017-03-15 | 中国船舶重工集团公司第七二五研究所 | A kind of cone locking sealing device of sample in axial corrosion test |
| CN106442181A (en) * | 2016-09-16 | 2017-02-22 | 天津大学 | Fatigue test device for marine riser external corrosion |
| CN106442181B (en) * | 2016-09-16 | 2018-12-28 | 天津大学 | The outer corrosion fatigue test apparatus of marine riser |
| CN106404554A (en) * | 2016-10-19 | 2017-02-15 | 辽宁石油化工大学 | Test apparatus for research on laws of influence of sulfate reducing bacteria on stress corrosion cracking of metal |
| CN106404554B (en) * | 2016-10-19 | 2023-08-22 | 辽宁石油化工大学 | Test device for researching influence rule of sulfate reducing bacteria on metal stress corrosion cracking |
| CN113390776A (en) * | 2021-04-12 | 2021-09-14 | 东莞材料基因高等理工研究院 | Corrosion test device and corrosion test method |
| CN113466121A (en) * | 2021-07-21 | 2021-10-01 | 石家庄铁道大学 | Test method of middle-corroded concrete filled steel tube test piece |
| CN113466121B (en) * | 2021-07-21 | 2022-05-20 | 石家庄铁道大学 | Test method of middle-corroded concrete filled steel tube test piece |
| CN114252346A (en) * | 2021-12-07 | 2022-03-29 | 西南交通大学 | Interference fit structure rotary bending micro-motion fatigue test device |
| CN115962903A (en) * | 2023-03-16 | 2023-04-14 | 廊坊双飞碟簧有限公司 | Disc spring elastic coefficient detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20150110 |
|
| EXPY | Termination of patent right or utility model |