CN102109406B - Vibration test method for heat-collecting tube - Google Patents
Vibration test method for heat-collecting tube Download PDFInfo
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- CN102109406B CN102109406B CN2011100015535A CN201110001553A CN102109406B CN 102109406 B CN102109406 B CN 102109406B CN 2011100015535 A CN2011100015535 A CN 2011100015535A CN 201110001553 A CN201110001553 A CN 201110001553A CN 102109406 B CN102109406 B CN 102109406B
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- collecting tube
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Abstract
The invention discloses a vibration test method for a heat-collecting tube. A vibration method of the heat-collecting tube is provided for the first time, the performance of the heat-collecting tube is fully considered, detection is performed in a mode of quantitatively increasing a detection parameter stepwise, and detection accuracy is ensured; meanwhile, different heat-collecting tubes in the same type are used in the minimum test period, so that test objectivity is ensured, and the fatigue damage of the heat-collecting tube in different test periods is avoided.
Description
Technical field
The invention belongs to the detection range of thermal-collecting tube, specifically relate to a kind of vibration resistance detection method of thermal-collecting tube.
Background technology
Solar vacuum heat-collecting pipe can be applicable to fields such as industrial heat, desalinization, has a extensive future, but because the thermal-collecting tube product belongs to all-glass work; In transportation, inevitably can produce fragmentation; For its broken problem that in transportation and use, is produced, we hope to find a kind of method that can effectively judge the anti-breaking capacity of thermal-collecting tube, so that judge the ability of thermal-collecting tube aspect resistance to shock; And be used to find product defects, improve production quality.
Complete glass vacuum sun thermal-collecting tube detects according to GB 17049-2005 at present; The method of testing that does not have the thermal-collecting tube resistance to shock in this standard; This method of testing is used for the resistance to shock of detected set heat pipe; So that the reference of production practices to be provided, finally to reduce the percentage of damage in transportation and use.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of vibration test method of full-glass solar energy collecting vacuum tube, with the antivibration parameter of detected set heat pipe, for production practices provide reference.
The present invention adopts following technical scheme:
This invention thermal-collecting tube vibration test method is characterized in that it may further comprise the steps:
Adjustment vibration table: the table-surface level that guarantees vibration table; Require vibration table to be installed on the hard basis simultaneously, the condition that this hard basis hardness is demarcated be that vibration table self vibrates under given vibration frequency of vibration table and amplitude condition peak swing is smaller or equal to 0.2mm;
Clamping: set at least two clamping points, the thermal-collecting tube of clamping band detection flatly, the levelness deviation is not more than 0.3mm, and needs to guarantee that the center of gravity of thermal-collecting tube is positioned at the center of gravity of vibration table table top, and deviation is not more than 2mm;
Vibration: the sinusoidal vibration with on the vertical direction detects, and the sensing range of setting vibration frequency is 10 ~ 50Hz, and quantitatively the compartment of terrain is divided into a plurality of vibration frequency round of visits; The sensing range of peak swing is 1.0 ~ 3.0mm, in the sense cycle of each frequency, quantitatively increases, and forms the round of visits of amplitude; Time of vibration is set at 10 ~ 120 minutes, in the round of visits of each amplitude, quantitatively increases, and forms minimum round of visits; With minimum round of visits is unit, and each minimum round of visits uses with other minimum round of visits homotype but the thermal-collecting tube of Different Individual;
Record:, then write down current frequency and the corresponding peak swing and the time of vibration maintenance, and no longer carry out the remaining test of current frequency and amplitude if the macroscopic failure of thermal-collecting tube in current minimum round of visits, occurs; If there is not macroscopic view to damage, this minimum round of visits that then finishes, and write down frequency, peak swing and the time of vibration of this cycle demarcation, and write down the damaged condition of current thermal-collecting tube, until all minimum round of visits of traversal.
Propose the method for thermal-collecting tube vibration first according to the thermal-collecting tube vibration test method of technical scheme of the present invention, and taken into full account the performance of thermal-collecting tube, adopt the mode that progressively quantitatively increases detected parameters to detect, guarantee the accuracy that detects.Simultaneously the homotype thermal-collecting tube is used the mode of different thermal-collecting tubes in minimum round of visits, guarantee the objectivity of check, avoid the fatigue breakdown of thermal-collecting tube in different round of visits, guarantee the objectivity of check.
Above-mentioned thermal-collecting tube vibration test method, said clamping step should guarantee that clamping point thermal-collecting tube is evenly stressed all around.
Above-mentioned thermal-collecting tube vibration test method, even stressed method is to adopt annular holder around the assurance clamping point.
Above-mentioned thermal-collecting tube vibration test method, said annular holder comprise base, are installed in the ring body with docking structure on this base, and corresponding to the joint of butted part.
Above-mentioned thermal-collecting tube vibration test method, said ring body planted agent has flexible liner, avoids anchor clamps to contact with the hard of thermal-collecting tube.
Above-mentioned thermal-collecting tube vibration test method, said liner is the tetrafluoro bed course.
Above-mentioned thermal-collecting tube vibration test method, if the length of thermal-collecting tube adopts the mode of two clamping point symmetry clampings smaller or equal to 1500mm, the 200mm place, end of clamping point distance place one side; If the length of thermal-collecting tube then adopts the mode of three clamping point symmetry clampings greater than 1500mm, be positioned at the 200mm place, end of clamping point distance place one side of both sides.
Description of drawings
Fig. 1 is the main TV structure synoptic diagram of vibration table.
Fig. 2 is the plan structure synoptic diagram corresponding to Fig. 1.
Fig. 3 is the structural representation of anchor clamps.
Among the figure: 1, vibration table stage body, 2, table top, 3, anchor clamps, 4, joint, 5, ring body, 6, base.
Embodiment
A kind of thermal-collecting tube vibration test method, its basic scheme may further comprise the steps:
Adjustment vibration table: with reference to Figure of description 1 and 2; Guarantee the table-surface level of vibration table; Require vibration table to be installed on the hard basis simultaneously; The condition that this hard basis hardness is demarcated be vibration table self vibrates under the given vibration frequency of vibration table and amplitude condition peak swing smaller or equal to 0.2mm, the amplitude that reduces to add, minimizing verify error;
Clamping: set at least two clamping points; The thermal-collecting tube of clamping band detection flatly; The levelness deviation is not more than 0.3mm, and needs to guarantee that the center of gravity of thermal-collecting tube is positioned at the center of gravity of vibration table table top, and deviation is not more than 2mm; To prevent that producing polarization perhaps avoids producing polarization as much as possible, ensures the quality of products;
Vibration: the sinusoidal vibration with on the vertical direction detects, and the sensing range of setting vibration frequency is 10 ~ 50Hz, and quantitatively the compartment of terrain is divided into a plurality of vibration frequency round of visits; The sensing range of peak swing is 1.0 ~ 3.0mm, in the sense cycle of each frequency, quantitatively increases, and forms the round of visits of amplitude; Time of vibration is set at 10 ~ 120 minutes, in the round of visits of each amplitude, quantitatively increases, and forms minimum round of visits; With minimum round of visits is unit, and each minimum round of visits uses with other minimum round of visits homotype but the thermal-collecting tube of Different Individual; Scope for vibration frequency, peak swing and time of vibration is different from parameter area, belongs between the setting district, is traveled through by following steps;
Record:, then write down current frequency and the corresponding peak swing and the time of vibration maintenance, and no longer carry out the remaining test of current frequency and amplitude if the macroscopic failure of thermal-collecting tube in current minimum round of visits, occurs; If there is not macroscopic view to damage, this minimum round of visits that then finishes, and write down frequency, peak swing and the time of vibration of this cycle demarcation, and write down the damaged condition of current thermal-collecting tube, until all minimum round of visits of traversal.It mainly is that fracture waits the more serious situation of destroying that macroscopic view is damaged, to such an extent as to test can't be carried out.About damaged condition, mainly observe crackle, crackle region, shape and structure.
In order to reduce unnecessary interference, said clamping step should guarantee around the clamping point thermal-collecting tube evenly stressed, prevents that local pressure is excessive and causes the vacation that is different from normal test to damage.
Preferably, even stressed method is to adopt annular holder around the assurance clamping point, and is simple in structure, easily location and clamping.
As further selection; Said annular holder comprises base 6, is installed in the ring body with docking structure 5 on this base; And corresponding to the joint 4 of butted part, ring body can be that rectangular strip bending as shown in Figure 3 forms, and also can be that two semi-circular ring butt joints form.
Preferably, said ring body planted agent has flexible liner, avoids anchor clamps to contact with the hard of thermal-collecting tube.Thermal-collecting tube can very perfectly not combine with anchor clamps in shape after all, based on these means, can well make thermal-collecting tube evenly stressed around clamping point.
Preferably, said liner is the tetrafluoro bed course.
Preferably, if the length of thermal-collecting tube adopts the mode of two clamping point symmetry clampings smaller or equal to 1500mm, the 200mm place, end of clamping point distance place one side; If the length of thermal-collecting tube then adopts the mode of three clamping point symmetry clampings greater than 1500mm, be positioned at the 200mm place, end of clamping point distance place one side of both sides.Based on this selection mode, can satisfy the experiment of various thermal-collecting tube basically.Clamping point is too much unsuitable, not so causes the deviation of clamping easily.
Claims (7)
1. thermal-collecting tube vibration test method is characterized in that it may further comprise the steps:
Adjustment vibration table: the table-surface level that guarantees vibration table; Require vibration table to be installed on the hard basis simultaneously, the condition that this hard basis hardness is demarcated be that vibration table self vibrates under given vibration frequency of vibration table and amplitude condition peak swing is smaller or equal to 0.2mm;
Clamping: set at least two clamping points, clamping thermal-collecting tube to be detected flatly, the levelness deviation is not more than 0.3mm, and needs to guarantee that the center of gravity of thermal-collecting tube is positioned at the center of gravity of vibration table table top, and deviation is not more than 2mm;
Vibration: the sinusoidal vibration with on the vertical direction detects, and the sensing range of setting vibration frequency is 10 ~ 50Hz, and quantitatively the compartment of terrain is divided into a plurality of vibration frequency round of visits; The sensing range of peak swing is 1.0 ~ 3.0mm, in the round of visits of each frequency, quantitatively increases, and forms the round of visits of amplitude; Time of vibration is set at 10 ~ 120 minutes, in the round of visits of each amplitude, quantitatively increases, and forms minimum round of visits; With minimum round of visits is unit, and each minimum round of visits uses with other minimum round of visits homotype but the thermal-collecting tube of Different Individual;
Record:, then write down current frequency and the corresponding peak swing and the time of vibration maintenance, and no longer carry out the remaining test of current frequency and amplitude if the macroscopic failure of thermal-collecting tube in current minimum round of visits, occurs; If there is not macroscopic view to damage, this minimum round of visits that then finishes, and write down frequency, peak swing and the time of vibration that this minimum round of visits is demarcated, and write down the damaged condition of current thermal-collecting tube, until all minimum round of visits of traversal.
2. thermal-collecting tube vibration test method according to claim 1 is characterized in that: said clamping step should guarantee that clamping point thermal-collecting tube is evenly stressed all around.
3. thermal-collecting tube vibration test method according to claim 2 is characterized in that: even stressed method is to adopt annular holder around the assurance clamping point.
4. thermal-collecting tube vibration test method according to claim 3 is characterized in that: said annular holder comprises base (6), is installed in the ring body with docking structure (5) on this base, and corresponding to the joint (4) of butted part.
5. thermal-collecting tube vibration test method according to claim 4 is characterized in that: said ring body planted agent has flexible liner, avoids anchor clamps to contact with the hard of thermal-collecting tube.
6. thermal-collecting tube vibration test method according to claim 5 is characterized in that: said liner is the tetrafluoro bed course.
7. thermal-collecting tube vibration test method according to claim 1 is characterized in that: if the length of thermal-collecting tube adopts the mode of two clamping point symmetry clampings smaller or equal to 1500mm, and the 200mm place, end of clamping point distance place one side; If the length of thermal-collecting tube then adopts the mode of three clamping point symmetry clampings greater than 1500mm, be positioned at the 200mm place, end of clamping point distance place one side of both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100015535A CN102109406B (en) | 2011-01-06 | 2011-01-06 | Vibration test method for heat-collecting tube |
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| CN2011100015535A CN102109406B (en) | 2011-01-06 | 2011-01-06 | Vibration test method for heat-collecting tube |
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| CN102109406A CN102109406A (en) | 2011-06-29 |
| CN102109406B true CN102109406B (en) | 2012-02-08 |
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| CN104729816A (en) * | 2013-12-23 | 2015-06-24 | 北京有色金属研究总院 | Solid hydrogen storage system vibration test device and method |
| CN106769566B (en) * | 2016-12-12 | 2019-04-09 | 成都姜业光电科技有限公司 | Elastic slice method for testing fatigue |
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| FR2819588B1 (en) * | 2001-01-16 | 2003-03-28 | Matra Bae Dynamics France | METHOD AND DEVICE FOR TESTING COMPONENTS SUBJECTED TO SHOCK |
| CN100408993C (en) * | 2004-02-02 | 2008-08-06 | 沈光新 | Simulated test platform system for mechanical structure vibration resistant performance |
| CN101871864B (en) * | 2009-04-21 | 2012-07-25 | 北京清华阳光能源开发有限责任公司 | On-line detection method of anti-detonating quality of all-glass heat tube type evacuated solar collector tube and device |
| CN101623690B (en) * | 2009-07-29 | 2012-10-17 | 深圳市计量质量检测研究院 | Apparatus and method for reliability screening |
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