CN103278287A - Sensor fixing device for direct measurement of shock wave loading model ball array dynamic resistance - Google Patents
Sensor fixing device for direct measurement of shock wave loading model ball array dynamic resistance Download PDFInfo
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- CN103278287A CN103278287A CN2013101374568A CN201310137456A CN103278287A CN 103278287 A CN103278287 A CN 103278287A CN 2013101374568 A CN2013101374568 A CN 2013101374568A CN 201310137456 A CN201310137456 A CN 201310137456A CN 103278287 A CN103278287 A CN 103278287A
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Abstract
The invention discloses a sensor fixing device for direct measurement of shock wave loading model ball array dynamic resistance. The sensor fixing device comprises a high-pressure air source, a driving section, a diaphragm and a driven section, wherein one end of the driving section and one end of the driven section are connected through the diaphragm to form a shock wave tube, the high-pressure air source is connected with the other end of the driving section, and one end of an experimental section is connected with the other end of the driven section. Two serially-connected model balls in the same structure are arranged inside the experimental section, accelerometer sensors are respectively arranged inside the two model balls, a metal wire of one model ball is fixed through a fixing ball, a metal wire of the other model ball is led out from a rectangular groove of the experimental section and is connected with a force sensor fixing device, the two model balls are connected with a high-speed data collecting system through signal wires, and a force sensor in the force sensor fixing device is connected with the data collecting system. The sensor fixing device has the advantages that the precise and complete direct measurement of the shock wave loading model ball array dynamic resistance is realized, and the mutual verification and the mutual supplement can be realized.
Description
Technical field
The present invention relates to a kind of experimental provision of ergometry, especially relate to the direct measured sensor stationary installation of a kind of shock wave stress model spherical array dynamic resistance.
Background technology
Supersonic Gas fixed double phase flow phenomenon has important application in a lot of commercial production, relate to health care, clean energy resource,, various fields such as safe prevention and control and Aero-Space, concrete application examples such as powder needleless injector, pulsed powder fire extinguisher, supersonic cold gas spray etc.Carry out the Dual-Phrase Distribution of Gas olid research of SHOCK WAVE INDUCED, its key issue is to understand fully the interaction mechanism of shock wave and model spherical array and sum up the rule that influences of concluding unstable state power, and this mainly relies on custom-designed experimental provision and model ball for this reason.Documents [Shock wave interaction with a sphere in a shock tube] [J]. Shock Waves (2004) 3:22-24 is connected to form the model ball with dormant bolt with two hemisphere, seriously destroy the spherical geometry structure, destroyed the structure of air-flow behind shock wave and the ripple; The part that Chinese patent 201210091206.0 and Chinese patent 201210091207.5 experimental section tinsels pass has the hole than the big 0.3mm of wire diameter, when the model ball stressed when mobile, this hole has hindered movement wiry, cause the stressed distortion of model ball, Chinese patent 201210091206.0 adopts fluid to trigger the power sensor, by the character of power sensor as can be known, the power center sensor triggers and is pressure, triggers all around to be pulling force, and fluid and sensor-triggered face contact area are too big, cause pressure, pulling force mixes, and experimental data is inaccurate, and its connecting rod is perfect thread in addition, when connecting rod moves and upper plate friction force very big, cause the experimental data distortion.
Summary of the invention
At existing problem in the above-mentioned background technology; The object of the present invention is to provide the direct measured sensor stationary installation of a kind of shock wave stress model spherical array dynamic resistance.
The technical scheme that the present invention solves its technical matters employing is:
The present invention includes high-pressure air source, drive section, diaphragm and driven section; Drive an end of section and an end of driven section and connect to form shock tube by diaphragm, high-pressure air source links to each other with the other end that drives section, and an end of experimental section links to each other with driven section the other end.Experimental section inside is equipped with two model balls polyphone, that structure is identical, in two model balls acceierometer sensor is installed all, the tinsel of a model ball is fixed by fixing ball, and the tinsel of another model ball is drawn from the rectangular channel of experimental section with the power sensor fastening device and linked to each other; Two model balls link to each other with high-speed data acquistion system by signal wire, and the power sensor in the power sensor fastening device links to each other with data acquisition system (DAS).
Two model balls that described structure is identical.Be divided into segment and spherical crown, there is a tinsel mounting hole at place, segment maximum cross-section, tinsel passes the tinsel mounting hole, with hold-down bars two model balls are fixed composition spherical array model, be useful on the mounting hole that acceierometer sensor is installed in the segment, acceierometer sensor is installed in the mounting hole in the segment by fixing glue, acceierometer sensor links to each other with high-speed data acquistion system by signal wire respectively, signal wire is fixed with plasticine, and segment and spherical crown connect to form the model ball by wedge-shaped slot.
The stationary installation of described power sensor comprises: upper junction plate, connecting screw rod, fixed head, abutment ring, triggering rod, lower connecting plate; The power sensor is fixed in the fixed head center pit, four connecting screw rods couple together upper junction plate, lower connecting plate by the unthreaded hole on the fixed head, abutment ring is installed on the middle boss of lower connecting plate, the groove on abutment ring top entangles power sensor bottom, trigger the center pit that rod passes abutment ring, an end that triggers rod contacts with boss in the middle of the lower connecting plate, and the other end that triggers rod contacts with power sensor bottom surface, and the power sensor links to each other with data acquisition system (DAS).
The beneficial effect that the present invention has is:
Model ball of the present invention surface is very smooth, can not destroy the structure of air-flow behind shock wave and the ripple, the part that experimental section bottom metal silk passes has rectangular channel, tinsel is stressed can arbitrarily to be moved, can not be affected, the triggering rod passes the abutment ring center pit and heads on power sensor-triggered face, and it is very little to trigger excellent area, stationkeeping, the center sensor position of can only exerting all one's strength is triggered, the power sensor has only pressure signal, pressure can not occur, the situation that pulling force mixes, connecting screw rod two is screw thread, the middle part is polished rod, the polished rod at connecting screw rod middle part and the unthreaded hole smooth surface on the fixed head, and friction force is very little, can ignore, acceierometer sensor links to each other with high-speed data acquistion system, and the power sensor links to each other with data acquisition system (DAS), realizes the accurate of shock wave stress model spherical array dynamic resistance, complete direct measurement, two kinds of sensors are measured shock wave stress model spherical array dynamic resistance simultaneously, both can verify mutually, can replenish mutually again.
Description of drawings
Fig. 1 is general structure synoptic diagram of the present invention.
Fig. 2 is acceierometer sensor stationary installation synoptic diagram.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the right view of Fig. 2 segment.
Fig. 5 is the left view of Fig. 2 spherical crown.
Fig. 6 is power sensor fastening device synoptic diagram.
Among the figure: 1, the tinsel mounting hole, 2, segment, 3, spherical crown, 4, fixing glue, 5, acceierometer sensor, 6, plasticine, 7, signal wire, 8, mounting hole, 9, wedge-shaped slot, 10, upper junction plate, 11, stator, 12, connecting screw rod, 13, fixed head, 14, the power sensor, 15, abutment ring, 16, trigger rod, 17, lower connecting plate, 18, high-pressure air source, 19, drive section, 20, diaphragm, 21, data acquisition system (DAS), 22, driven section, 23, the power sensor fastening device, 24, experimental section, 25, fixing ball, 26, tinsel, 27, the spherical array model, 28, hold-down bars, 29, rectangular channel, 30, high-speed data acquistion system.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing and example.
As Fig. 1, Fig. 2, shown in Figure 6, the present invention includes high-pressure air source 18, drive section 19, diaphragm 20 and driven section 22; Drive an end of section 19 and an end of driven section 22 and connect to form shock tube by diaphragm 20, high-pressure air source 18 links to each other with the other end that drives section 19, and an end of experimental section 24 links to each other with driven section 22 the other end.Experimental section 24 inside are equipped with two model balls polyphone, that structure is identical, in two model balls acceierometer sensor 5 is installed all, the tinsel 26 of a model ball passes through fixedly ball 25, stator 11 is connected and fixed with flange, and the tinsel 26 of another model ball is drawn from the rectangular channel 29 of experimental section 24 with the upper junction plate 10 of power sensor fastening device 23 and linked to each other by stator 11; Two model balls link to each other with high-speed data acquistion system 30 by signal wire 7, and the power sensor 14 in the power sensor fastening device 23 links to each other with data acquisition system (DAS) 21.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, two model balls that described structure is identical, be divided into segment 2 and spherical crown 3, there is a tinsel mounting hole 1 at place, segment 2 maximum cross-sections, tinsel 26 passes tinsel mounting hole 1, with hold-down bars 28 two model balls are fixed composition spherical array model 27, be useful on the mounting hole 8 that acceierometer sensor 5 is installed in the segment 2, acceierometer sensor 5 is installed in the mounting hole 8 in the segment 2 by fixing glue 4, acceierometer sensor 5 links to each other with high-speed data acquistion system 30 by signal wire 7 respectively, signal wire 7 usefulness plasticine 6 are fixing, and segment 2 and spherical crown 3 connect to form the model ball by wedge-shaped slot 9.
As Fig. 1, shown in Figure 6, the stationary installation 23 of described power sensor comprises: upper junction plate 10, connecting screw rod 12, fixed head 13, abutment ring 15, triggering rod 16, lower connecting plate 17; Power sensor 14 is fixed in fixed head 13 center pits, four connecting screw rods 12 couple together upper junction plate 10, lower connecting plate 17 by the unthreaded hole on the fixed head 13, abutment ring 15 is installed on the lower connecting plate 17 middle boss, the groove on abutment ring 15 tops entangles power sensor 14 bottoms, trigger the center pit that rod 16 passes abutment ring 15, an end that triggers rod 16 contacts with boss in the middle of the lower connecting plate 17, the other end that triggers rod 16 contacts with power sensor 14 bottom surfaces, and power sensor 14 links to each other with data acquisition system (DAS) 21.
Described acceierometer sensor 5 models are TST266A01, and power sensor 14 models are TST151, and high-speed data acquistion system 30 models are TST5910, and data acquisition system (DAS) 21 models are TST5911.
Principle of work of the present invention is as follows:
Gas cylinder links to each other with an end that drives section, the other end that drives section links to each other by the end of diaphragm with driven section, driven section the other end links to each other with experimental section, segment and spherical crown connect to form the model ball by wedge-shaped slot, model ball surface is very smooth, can the structure of air-flow behind shock wave and the ripple not impacted, tinsel passes the tinsel mounting hole on the model ball, form the spherical array model by hold-down bars and be fixed on experimental section, an end wiry passes through fixedly ball, stator is connected with flange, be fixed on the experimental section outside, the other end wiry rectangular channel of section bottom by experiment links to each other with the upper junction plate of power sensor device, because there is wide 2mm in the experimental section bottom, long 5mm rectangular channel, therefore tinsel is stressed can arbitrarily move, can not be affected, the power sensor is fixed in the fixed head center pit, connecting screw rod by the unthreaded hole on the fixed head with upper junction plate, lower connecting plate couples together, connecting screw rod two is screw thread, the middle part is polished rod, the polished rod at connecting screw rod middle part and the unthreaded hole smooth surface on the fixed head, friction force is very little, can ignore, abutment ring is installed on the middle boss of lower connecting plate, the groove on abutment ring top entangles power sensor bottom, trigger the center pit that rod passes abutment ring, an end that triggers rod contacts with boss in the middle of the lower connecting plate, and the other end that triggers rod contacts with power sensor bottom surface, it is very little to trigger excellent area, stationkeeping can only make the center sensor position be triggered, and the power sensor has only pressure signal, pressure can not appear, the situation that pulling force mixes, acceierometer sensor links to each other with high-speed data acquistion system, and the power sensor links to each other with data acquisition system (DAS).Gases at high pressure are transported to from gas cylinder and drive section, when the driving section reaches certain value with driven section pressure reduction, rupture of diaphragm, produce shock wave, shock wave moves to experimental section, apply impulsive force to the model spherical array, at this moment, acceierometer sensor and power sensor receive signal respectively, and are stored in respectively in high-speed data acquistion system and the data acquisition system (DAS), have realized the accurate of shock wave stress model spherical array dynamic resistance, complete direct measurement, two kinds of sensors are measured shock wave stress model spherical array dynamic resistance simultaneously, both can verify mutually, can replenish mutually again.
Claims (3)
1. the direct measured sensor stationary installation of shock wave stress model spherical array dynamic resistance comprises high-pressure air source (18), drives section (19), diaphragm (20) and driven section (22); Drive an end of section (19) and an end of driven section (22) and connect to form shock tube by diaphragm (20), high-pressure air source (18) links to each other with the other end that drives section (19), and an end of experimental section (24) links to each other with the other end of driven section (22); It is characterized in that: experimental section (24) inside is equipped with two model balls polyphone, that structure is identical, acceierometer sensor (5) all is installed in two model balls, the tinsel of a model ball (26) is by fixedly ball (25) is fixing, and the tinsel of another model ball (26) is drawn with power sensor fastening device (23) from the rectangular channel (29) of experimental section (24) and linked to each other; Two model balls link to each other with high-speed data acquistion system (30) by signal wire (7), and the power sensor (14) in the power sensor fastening device (23) links to each other with data acquisition system (DAS) (21).
2. the direct measured sensor stationary installation of a kind of shock wave stress model spherical array dynamic resistance according to claim 1, it is characterized in that: two model balls that described structure is identical, be divided into segment (2) and spherical crown (3), there is a tinsel mounting hole (1) at place, segment (2) maximum cross-section, tinsel (26) passes tinsel mounting hole (1), with hold-down bars (28) two model balls are fixed composition spherical array model (27), be useful on the mounting hole (8) that acceierometer sensor (5) is installed in the segment (2), acceierometer sensor (5) is installed in the mounting hole (8) in the segment (2) by fixing glue (4), acceierometer sensor (5) links to each other with high-speed data acquistion system (30) by signal wire (7), signal wire (7) is fixing with plasticine (6), and segment (2) and spherical crown (3) connect to form the model ball by wedge-shaped slot (9).
3. the direct measured sensor stationary installation of a kind of shock wave stress model spherical array dynamic resistance according to claim 1, it is characterized in that: the stationary installation of described power sensor (23) comprising: upper junction plate (10), connecting screw rod (12), fixed head (13), abutment ring (15), trigger rod (16), lower connecting plate (17); Power sensor (14) is fixed in fixed head (13) center pit, four connecting screw rods (12) by the unthreaded hole on the fixed head (13) with upper junction plate (10), lower connecting plate (17) couples together, abutment ring (15) is installed on the middle boss of lower connecting plate (17), the groove on abutment ring (15) top entangles power sensor (14) bottom, trigger the center pit that rod (16) passes abutment ring (15), an end that triggers rod (16) contacts with boss in the middle of the lower connecting plate (17), the other end that triggers rod (16) contacts with power sensor (14) bottom surface, and power sensor (14) links to each other with data acquisition system (DAS) (21).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310137456.8A CN103278287B (en) | 2013-04-19 | 2013-04-19 | The sensor fastening device that shock wave stress model spherical array dynamic resistance is directly measured |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310137456.8A CN103278287B (en) | 2013-04-19 | 2013-04-19 | The sensor fastening device that shock wave stress model spherical array dynamic resistance is directly measured |
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| CN103278287A true CN103278287A (en) | 2013-09-04 |
| CN103278287B CN103278287B (en) | 2015-08-26 |
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| CN201310137456.8A Expired - Fee Related CN103278287B (en) | 2013-04-19 | 2013-04-19 | The sensor fastening device that shock wave stress model spherical array dynamic resistance is directly measured |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644218A (en) * | 2016-11-29 | 2017-05-10 | 河南科技大学 | Pressure sensor fixing device used for goat hoof |
| CN108195500A (en) * | 2018-02-03 | 2018-06-22 | 河北航科工程检测设备技术有限公司 | A kind of bridge expanssion joint walks resistance automatic data acquisition experimental provision |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008238133A (en) * | 2007-03-29 | 2008-10-09 | Kumagai Gumi Co Ltd | Shock wave reflecting device and crushing method using the device |
| CN102607760A (en) * | 2012-03-31 | 2012-07-25 | 浙江理工大学 | Direct measurement device for unsteady state force of loading and fixing particle swarm of shock wave |
| CN102620880A (en) * | 2012-03-31 | 2012-08-01 | 浙江理工大学 | Sensor fixing device for measuring unsteady force by utilizing shock waves to load and fix particle swarm |
| CN203203743U (en) * | 2013-04-19 | 2013-09-18 | 浙江理工大学 | Sensor fixing device for direct measure of shock wave loading spherical array dynamic resistance |
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2013
- 2013-04-19 CN CN201310137456.8A patent/CN103278287B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008238133A (en) * | 2007-03-29 | 2008-10-09 | Kumagai Gumi Co Ltd | Shock wave reflecting device and crushing method using the device |
| CN102607760A (en) * | 2012-03-31 | 2012-07-25 | 浙江理工大学 | Direct measurement device for unsteady state force of loading and fixing particle swarm of shock wave |
| CN102620880A (en) * | 2012-03-31 | 2012-08-01 | 浙江理工大学 | Sensor fixing device for measuring unsteady force by utilizing shock waves to load and fix particle swarm |
| CN203203743U (en) * | 2013-04-19 | 2013-09-18 | 浙江理工大学 | Sensor fixing device for direct measure of shock wave loading spherical array dynamic resistance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644218A (en) * | 2016-11-29 | 2017-05-10 | 河南科技大学 | Pressure sensor fixing device used for goat hoof |
| CN108195500A (en) * | 2018-02-03 | 2018-06-22 | 河北航科工程检测设备技术有限公司 | A kind of bridge expanssion joint walks resistance automatic data acquisition experimental provision |
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| CN103278287B (en) | 2015-08-26 |
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Granted publication date: 20150826 Termination date: 20160419 |