CN201909738U - Fatigue test device of large-scale bellows component - Google Patents
Fatigue test device of large-scale bellows component Download PDFInfo
- Publication number
- CN201909738U CN201909738U CN2010206619328U CN201020661932U CN201909738U CN 201909738 U CN201909738 U CN 201909738U CN 2010206619328 U CN2010206619328 U CN 2010206619328U CN 201020661932 U CN201020661932 U CN 201020661932U CN 201909738 U CN201909738 U CN 201909738U
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- rood beam
- screw rod
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- rood
- force bearing
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Abstract
The utility model relates to the field of fatigue test, in particular to a fatigue test device of a large-scale bellows component. By the fatigue test device, the fatigue property of a bus component under the actual working condition of a large-scale generating set can be met, and the problems that in the prior art, a sample cannot be loaded and clamped on a testing mechanism and the test result is inaccurate are solved. The test device is provided with a dynamometer, a screw I, a nut I, a rood beam I, a screw II, a nut II, an actuator, a screw III, an outer fixing plate, a bellows, force bearing rings, an inner fixing plate, a limit nut I, a limit nut II, a screw IV and a rood beam II. The force bearing rings with different thicknesses serving as brackets are respectively selected above and below the bellows component according to different components. The force bearing rings are in boring connection with the bellows component so that at least eight junctions are guaranteed. The rood beam adopts I-shaped steels with different thicknesses and sizes according to different bellows components. The middle of the road beam is connected with a testing machine clamp. The positions at both ends of the road beam are connected with the force bearing rings. Therefore, not only is the strength guaranteed, but also the fatigue test device is convenient to install.
Description
Technical field
The utility model relates to the torture test field, is specially a kind of fatigue experimental device of large-scale bellows members, can satisfy Generator Set actual condition Down Highway component fatigue performance.
Background technology
Current China has become the largest country of electrical network, and power technology has obtained great advance: the overcritical thermal power generation unit of Chinese gigawatt is represented the highest level of current international thermal power generating technology; The manufacturing of presurized water reactor nuclear fuel element has realized production domesticization, and performance index reach the similar level in the world; The gordian technique such as manufacture and design of Large Hydroelectric Set obtains to break through, and has entered the industrialization stage, and homemade 700 megawatt hydraulic generator units are reached advanced world standards; Technology such as direct current transportation, series capacitor compensation, parallel lines on same tower are applied in electricity power engineering, or the like; Because the development of power technology, many new materials are employed on the genset, but can new material be applied to actual operating mode, and the requirement of realistic operating mode is a difficult problem.Generally acknowledge that in the world test method is that member in kind is carried out fatigue experiment the most accurately, all there is the requirement of fatigue lifetime in the usage system that safety is had higher requirements, but the test life Forecasting Methodology for the bus crust adopts sample to obtain the S-N curve more at present, by the S-N curve life-span of actual components is predicted.
The main following points of reason that component test can't carry out: the concrete size internal diameter of the large-scale bellows members of test more than 1.8 meters, about about 0.4 meter of external diameter more than 2.5 meters, ripple height, wall thickness is about 0.03-0.05 rice, but concrete experimental test ability but has only about 100 kilograms, the wideest test space of existing testing machine is at 1.5 meters, sample can't clamping to testing machine, and the big testing machine measuring accuracy of test space is enough to influence test and causes test findings inaccurate, and a costly sample is wanted hundreds of thousands unit; How the construction weight of test guarantees uniform loading, the anchor clamps that do not load generally more than 300 kilograms; The test of bus bar component fatigue behaviour, at present in the world and the method for none standard.
The utility model content
The purpose of this utility model is to provide a kind of fatigue experimental device that can satisfy the large-scale bellows members of Generator Set actual condition Down Highway component fatigue performance, solve the sample that exists in the prior art can't clamping to testing machine, problem such as test findings is inaccurate.
The technical solution of the utility model is:
A kind of fatigue experimental device of large-scale bellows members, this test unit is provided with dynamometer, screw rod I, nut I, rood beam I, screw rod II, nut II, actuator, screw rod III, external fixation sheet, corrugated tube, force bearing ring, internal fixation sheet, stop nut I, stop nut II, screw rod IV, rood beam II, and concrete structure is as follows:
Inboard, straight mouthful of place at the corrugated tube two ends is provided with force bearing ring, the inboard of force bearing ring connects rood beam I, rood beam II by the internal fixation sheet respectively, straight mouthful of place's arranged outside external fixation sheet at corrugated tube two ends, external fixation sheet, corrugated tube, force bearing ring and internal fixation sheet are connected and fixed by screw rod III, be positioned at two rood beams of corrugated tube inboard: rood beam I and the parallel upper and lower settings of rood beam II, rood beam I or rood beam II and the welding of internal fixation sheet form the crosshead anchor clamps; The center of rood beam I and rood beam II is equipped with screw rod I and screw rod IV respectively, and the end of screw rod I is by the dynamometer that is threaded, and screw rod I is in the rood beam I both sides on top fastening installation nut I; The end of screw rod IV is by the actuator that is threaded, and screw rod IV is in the rood beam II both sides of bottom fastening installation nut II.
The fatigue experimental device of described large-scale bellows members is connected with at least two screw rod II between the rood beam I at corrugated tube two ends and the rood beam II, screw rod II is parallel, uniform.
The fatigue experimental device of described large-scale bellows members, screw rod II is in the rood beam I both sides on top fastening installation stop nut I, screw rod II installs stop nut II in the rood beam II both sides of bottom, leaves the 3-5mm gap between the rood beam II both sides of stop nut II and bottom.
The fatigue experimental device of described large-scale bellows members, rood beam I and rood beam II are joist steel.
A kind of fatigue test method of large-scale bellows members, concrete steps are as follows:
(1) bellows members is enclosed within on the testing machine, makes testing machine be positioned at the space of bellows members;
(2) screw rod I is passed superposed rood beam I center pit, two nut I on the screw rod I are connected and fixed in rood beam I both sides, the upper end of screw rod I and dynamometer are by being threaded, connect internal fixation sheet, force bearing ring, corrugated tube, the external fixation sheet that weld rood beam I end successively by screw rod III, the rood beam I and the corrugated tube on top are connected and fixed;
(3) screw rod IV is passed the rood beam II center pit that is positioned at the bottom, two nut II on the screw rod IV are connected and fixed in rood beam II both sides, and nut II is adjusted to the control position of test; The lower end of screw rod IV and the actuator of fatigue tester are by being threaded; Connect internal fixation sheet, force bearing ring, corrugated tube, the external fixation sheet of the rood beam II end welding that is positioned at the bottom successively by screw rod, the rood beam II and the corrugated tube of bottom are connected and fixed;
(4) will connect at least two screw rod II between rood beam I and the rood beam II, screw rod II is parallel, uniform; In the rood beam I both sides on top fastening installation stop nut I, screw rod II installs stop nut II in the rood beam II both sides of bottom, leaves the 3-5mm gap between the rood beam II both sides of stop nut II and bottom with screw rod II;
(5) actuator of startup fatigue tester is set loading speed and loading amplitude and is carried out the torture test loading.
The fatigue test method of described large-scale bellows members, choose the force bearing ring of different-thickness as support according to the member difference respectively up and down in bellows members, holing to be connected with bellows members guarantees link position at least eight places, and every place symmetry is arranged quadruplet nut, bolt locking.
The beneficial effects of the utility model are:
1, the utility model will be changed into the working condition measurement of actual components by the test method that the S-N curve was predicted the life-span of actual components, become this method actual life by the prediction in past, improved the confidence level of test result, test result can obtain the colleague's of country approval.Obtain the S-N curve and need process sample about 26, test period takes 45 days at the soonest, and processing and testing expenses are about 150,000 Renminbi; The utility model test method only needs the member of a reality, and experiment can be finished remarkable in economical benefits in 1 day.
2, the utility model adopts testing machine to put into the space of member, the crosshead anchor clamps are provided with two groups of rood beams up and down, choose the steel ring set of different-thickness up and down respectively according to the member difference in bellows members, holing to be connected with member guarantees link position at least 8 places, and every place symmetry is arranged quadruplet nut, screw rod locking; Rood beam is chosen the joist steel of different-thickness size according to the member difference, and the centre position connects grip of testing machine, and end positions connects and loads steel ring, has guaranteed promptly that intensity is convenient again to install.Be to guarantee the locating device that evenly loads, in the terminal same position boring of every group of corresponding cross beam anchor clamps joist steel, top is with two nut fixed length screw rods, and the bottom is adjusted to the control position of test with two nuts, can guarantee uniform loading.
Description of drawings
Fig. 1 is the fatigue experimental device synoptic diagram of the large-scale bellows members of the utility model.
Among the figure, 1 dynamometer; 2 screw rod I; 3 nut I; 4 rood beam I; 5 screw rod II; 6 nut II; 7 actuator; 8 screw rod III; 9 external fixation sheets; 10 corrugated tubes; 11 force bearing rings (steel ring); 12 internal fixation sheets; 13 stop nut I; 14 stop nut II; 15 screw rod IV; 16 rood beam II.
Embodiment
As shown in Figure 1, the fatigue experimental device of the large-scale bellows members of the utility model mainly comprises: dynamometer 1, screw rod I2, nut I3, rood beam I4, screw rod II5, nut II6, actuator 7, screw rod III8, external fixation sheet 9, corrugated tube (aluminium alloy) 10, force bearing ring (steel ring) 11, internal fixation sheet 12, stop nut I13, stop nut II14, screw rod IV15, rood beam II16 etc., and concrete structure is as follows:
Inboard, straight mouthful of place at corrugated tube 10 two ends is provided with force bearing ring 11, the inboard of force bearing ring 11 connects rood beam I4, rood beam II16 by internal fixation sheet 12 respectively, straight mouthful of place's arranged outside external fixation sheet 9 at corrugated tube 10 two ends, external fixation sheet 9, corrugated tube 10, force bearing ring 11 and internal fixation sheet 12 are connected and fixed by screw rod III8, be positioned at two rood beams of corrugated tube 10 inboards: rood beam I4 and the parallel upper and lower settings of rood beam II16, rood beam I4 or rood beam II16 and 12 welding of internal fixation sheet form the crosshead anchor clamps.The center of rood beam I4 and rood beam II16 is equipped with screw rod I2 and screw rod IV15 respectively, and the end of screw rod I2 is by the dynamometer 1 that is threaded, and screw rod I2 is in the rood beam I4 both sides on top fastening installation nut I3; The end of screw rod IV15 is by the actuator 7 that is threaded, and screw rod IV15 is in the rood beam II16 both sides of bottom fastening installation nut II6.
In the present embodiment, be connected with screw rod II5 between the rood beam I4 at corrugated tube 10 two ends and the rood beam II16, screw rod II5 be four parallel, be symmetrical arranged.Screw rod II5 is in the rood beam I4 both sides on top fastening installation stop nut I13, and screw rod II5 installs stop nut II14 in the rood beam II16 both sides of bottom, leaves gap (3-5mm) between the rood beam II16 both sides of stop nut II14 and bottom.
In the present embodiment, the trade mark of corrugated tube can be ZL102.
In the present embodiment, rood beam I4 and rood beam II16 can be joist steel.
In the present embodiment, the fatigue test method of large-scale bellows members is specific as follows:
(1) adopts INSTRON 8801 crossbeam liftable fatigue testers, corrugated tube 10 members are enclosed within on the testing machine, make testing machine be positioned at the space of corrugated tube 10 members;
(2) screw rod I2 is passed superposed rood beam I4 center pit, two nut I3 on the screw rod I2 are connected and fixed in rood beam I4 both sides, the upper end of screw rod I2 and dynamometer 1 are by being threaded, connect internal fixation sheet 12, force bearing ring 11, corrugated tube 10, the external fixation sheet 9 that weld rood beam I4 end successively by screw rod III8, the rood beam I4 on top and corrugated tube 10 are connected and fixed;
(3) screw rod IV15 is passed the rood beam II16 center pit that is positioned at the bottom, two nut II6 on the screw rod IV15 are connected and fixed in rood beam II16 both sides, and nut II6 is adjusted to the control position of test; The lower end of screw rod IV15 and the actuator of fatigue tester 7 are by being threaded; Identical with superposed rood beam I4, connect internal fixation sheet, force bearing ring, corrugated tube, the external fixation sheet of the rood beam II end welding that is positioned at the bottom successively by screw rod, the rood beam II16 of bottom and corrugated tube 10 are connected and fixed;
(4) with connecting screw rod II5 between rood beam I4 and the rood beam II16, screw rod II5 be four parallel, be symmetrical arranged; In the rood beam I4 both sides on top fastening installation stop nut I13, screw rod II5 installs stop nut II14 in the rood beam II16 both sides of bottom, leaves gap (3-5mm) between the rood beam II16 both sides of stop nut II14 and bottom with screw rod II5.
(5) actuator 7 of startup fatigue tester is set loading speed and loading amplitude and is carried out the torture test loading.
In the present embodiment, choose the force bearing ring 11 (steel ring) of different-thickness as support according to the member difference respectively up and down at corrugated tube 10 members, holing to be connected with corrugated tube 10 members guarantees link position at least eight places, and every place symmetry is arranged quadruplet nut, bolt locking; Rood beam is chosen the joist steel of different-thickness size according to corrugated tube 10 member differences, and the centre position of rood beam connects grip of testing machine, and the end positions of rood beam connects force bearing ring 11 (steel ring), has promptly guaranteed the convenient again installation of intensity.
Form test figure and report by test findings, the test figure of present embodiment is as follows:
For example, to the torture test of certain large-scale component, displacement loads amplitude 10.5mm, requires the data and curves of record displacement counter stress, and experiment back visual examination component surface has or not obvious crackle.
By test figure as can be seen: under the extreme displacement situation of designing requirement, the stressed of member has only about 2000N,, satisfy just at the lower limit of measurement requirement for this power of testing machine of 50000N, the displacement force curve of designing requirement can be provided the power Testing requirement.
Claims (4)
1. the fatigue experimental device of a large-scale bellows members, it is characterized in that: this test unit is provided with dynamometer, screw rod I, nut I, rood beam I, screw rod II, nut II, actuator, screw rod III, external fixation sheet, corrugated tube, force bearing ring, internal fixation sheet, stop nut I, stop nut II, screw rod IV, rood beam II, and concrete structure is as follows:
Inboard, straight mouthful of place at the corrugated tube two ends is provided with force bearing ring, the inboard of force bearing ring connects rood beam I, rood beam II by the internal fixation sheet respectively, straight mouthful of place's arranged outside external fixation sheet at corrugated tube two ends, external fixation sheet, corrugated tube, force bearing ring and internal fixation sheet are connected and fixed by screw rod III, be positioned at two rood beams of corrugated tube inboard: rood beam I and the parallel upper and lower settings of rood beam II, rood beam I or rood beam II and the welding of internal fixation sheet form the crosshead anchor clamps; The center of rood beam I and rood beam II is equipped with screw rod I and screw rod IV respectively, and the end of screw rod I is by the dynamometer that is threaded, and screw rod I is in the rood beam I both sides on top fastening installation nut I; The end of screw rod IV is by the actuator that is threaded, and screw rod IV is in the rood beam II both sides of bottom fastening installation nut II.
2. according to the fatigue experimental device of the described large-scale bellows members of claim 1, it is characterized in that: be connected with at least two screw rod II between the rood beam I at corrugated tube two ends and the rood beam II, screw rod II is parallel, uniform.
3. according to the fatigue experimental device of the described large-scale bellows members of claim 2, it is characterized in that: screw rod II is in the rood beam I both sides on top fastening installation stop nut I, screw rod II installs stop nut II in the rood beam II both sides of bottom, leaves the 3-5mm gap between the rood beam II both sides of stop nut II and bottom.
4. according to the fatigue experimental device of the described large-scale bellows members of claim 1, it is characterized in that: rood beam I and rood beam II are joist steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206619328U CN201909738U (en) | 2010-12-15 | 2010-12-15 | Fatigue test device of large-scale bellows component |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206619328U CN201909738U (en) | 2010-12-15 | 2010-12-15 | Fatigue test device of large-scale bellows component |
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| CN201909738U true CN201909738U (en) | 2011-07-27 |
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| CN2010206619328U Expired - Lifetime CN201909738U (en) | 2010-12-15 | 2010-12-15 | Fatigue test device of large-scale bellows component |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564842A (en) * | 2010-12-15 | 2012-07-11 | 中国科学院金属研究所 | Fatigue test device and fatigue test method of large corrugated pipe member |
| CN102635594A (en) * | 2012-04-17 | 2012-08-15 | 常州轩达液压机电设备有限公司 | Large-tonnage actuator servo-cylinder base |
| CN103822778A (en) * | 2014-02-28 | 2014-05-28 | 浙江花园电子科技有限公司 | Corrugated pipe service life tester |
| CN103837335A (en) * | 2012-11-21 | 2014-06-04 | 重庆长安汽车股份有限公司 | Fixing device for testing stiffness of exhaust bellows of automobile |
| CN103852225A (en) * | 2012-11-29 | 2014-06-11 | 中国石油天然气集团公司 | Internal-pressure fatigue test device for well-completion pipe string of underground gas storage reservoir and test method thereof |
| CN105229443A (en) * | 2013-05-17 | 2016-01-06 | 斯奈克玛 | Low-cycle fatigue or low week and multicycle fatigue rig |
| CN105510011A (en) * | 2015-12-01 | 2016-04-20 | 长春工业大学 | Three-degree-of-freedom thermal fatigue testing device used for metal bellows of vehicle exhaust system |
| CN105229443B (en) * | 2013-05-17 | 2018-08-31 | 斯奈克玛 | Low-cycle fatigue or low week and multicycle fatigue rig |
| CN113466067A (en) * | 2021-08-31 | 2021-10-01 | 江苏新恒基特种装备股份有限公司 | Bellows high temperature pressure-bearing fatigue test device |
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2010
- 2010-12-15 CN CN2010206619328U patent/CN201909738U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564842B (en) * | 2010-12-15 | 2013-09-25 | 中国科学院金属研究所 | Fatigue test device and fatigue test method of large corrugated pipe member |
| CN102564842A (en) * | 2010-12-15 | 2012-07-11 | 中国科学院金属研究所 | Fatigue test device and fatigue test method of large corrugated pipe member |
| CN102635594B (en) * | 2012-04-17 | 2016-03-30 | 常州展华机器人有限公司 | Large-tonnage actuator servo-cylinder base |
| CN102635594A (en) * | 2012-04-17 | 2012-08-15 | 常州轩达液压机电设备有限公司 | Large-tonnage actuator servo-cylinder base |
| CN103837335A (en) * | 2012-11-21 | 2014-06-04 | 重庆长安汽车股份有限公司 | Fixing device for testing stiffness of exhaust bellows of automobile |
| CN103852225B (en) * | 2012-11-29 | 2016-06-08 | 中国石油天然气集团公司 | The intrinsic pressure fatigue experimental device of underground natural gas storage tank completion tubular column and test method thereof |
| CN103852225A (en) * | 2012-11-29 | 2014-06-11 | 中国石油天然气集团公司 | Internal-pressure fatigue test device for well-completion pipe string of underground gas storage reservoir and test method thereof |
| CN105229443A (en) * | 2013-05-17 | 2016-01-06 | 斯奈克玛 | Low-cycle fatigue or low week and multicycle fatigue rig |
| CN105229443B (en) * | 2013-05-17 | 2018-08-31 | 斯奈克玛 | Low-cycle fatigue or low week and multicycle fatigue rig |
| CN103822778A (en) * | 2014-02-28 | 2014-05-28 | 浙江花园电子科技有限公司 | Corrugated pipe service life tester |
| CN103822778B (en) * | 2014-02-28 | 2016-06-22 | 花园金波科技股份有限公司 | corrugated pipe service life tester |
| CN105510011A (en) * | 2015-12-01 | 2016-04-20 | 长春工业大学 | Three-degree-of-freedom thermal fatigue testing device used for metal bellows of vehicle exhaust system |
| CN113466067A (en) * | 2021-08-31 | 2021-10-01 | 江苏新恒基特种装备股份有限公司 | Bellows high temperature pressure-bearing fatigue test device |
| CN113466067B (en) * | 2021-08-31 | 2021-11-19 | 江苏新恒基特种装备股份有限公司 | Bellows high temperature pressure-bearing fatigue test device |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20110727 Effective date of abandoning: 20130925 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20110727 Effective date of abandoning: 20130925 |
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| RGAV | Abandon patent right to avoid regrant |