CN202547853U - Sensor fixing device capable of measuring non-steady-state force of shock wave loading fixed particle swarm - Google Patents
Sensor fixing device capable of measuring non-steady-state force of shock wave loading fixed particle swarm Download PDFInfo
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- CN202547853U CN202547853U CN2012201303046U CN201220130304U CN202547853U CN 202547853 U CN202547853 U CN 202547853U CN 2012201303046 U CN2012201303046 U CN 2012201303046U CN 201220130304 U CN201220130304 U CN 201220130304U CN 202547853 U CN202547853 U CN 202547853U
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Abstract
The utility model discloses a sensor fixing device capable of measuring non-steady-state force of shock wave loading fixed particle swarm. The sensor fixing device comprises a base and a cage-shaped support, wherein the base is formed by connecting an upper cover plate with a lower cover plate through a base backing plate into a whole body, and the cage-shaped support comprises a cage-shaped support top cover, a cage-shaped support bottom cover, four connecting rods and a sensor threaded connection ring; the four connecting rods which are distributed at an equal distance penetrate through the fixed base upper cover plate, and then fixedly connect the cage-shaped support top cover with the cage-shaped support bottom cover below the base upper cover plate into a whole, and one end of the pressure sensor penetrates through a central hole of the base upper cover plate until reaching the cage-shaped support bottom cover, and is tightly locked at the lower end surface of the base upper cover plate through the sensor threaded connection ring; and an oil liquid is filled between one end of the pressure sensor and an inner hole of the cage-shaped support bottom cover, and the pressure sensor is connected with a high-speed data acquisition system. The non-steady-state force of shock wave borne by various ball array models can be conveniently measured and the fixing of the pressure sensor in a shock wave loading fixing particle warm experiment can be realized.
Description
Technical field
The utility model relates to a kind of experimental provision of ergometry, especially relates to a kind of sensor fastening device that shock wave loads immobilized particles crowd unstable state power of measuring.
Background technology
Dual-Phrase Distribution of Gas olid phenomenon in the supersonic speed gas phase flow field has important use in a plurality of fields such as medical treatment, fluid machinery, environmental protection and Aero-Space, for example the surface impacts corrosion simulation of formula aircraft etc. is separated, reentered to the supersonic speed of the solid particle erosion in the Needleless injection of powder medicaments, the gas turbine leaf grating, the supersonic cold gas spray in the heat processing technique, powder fire extinguishing, dust-laden combustion gas.Shock tube is one of the generating means in supersonic speed gas phase flow field, and the liquid form of its channel interior is the unstable state Dual-Phrase Distribution of Gas olid field that has the motion shock wave, relates to the problems such as interaction between gas, solid two alternate and solid particles.To the research of the flow phenomenon of this type complicacy, must consider multiple dynamic (dynamical) interaction, correlative study also has significant practical applications and learning value.Though did a lot of researchs both at home and abroad, the error rationality that single ball resistance coefficient model that all basic employing is simplified and simplification bring does not have effective experimental verification yet, also has all deficiencies in addition.
To these not enough we designed a cover experiment and studied so that draw particle swarm resistance coefficient model.In experiment, need therefore open aperture to steel ball, and some balls worn even, be fixed on the loadlock interior of evenly arranging some apertures on the wall together with high-intensity fine wire loadlock interior immobilized particles crowd by the different arrangement modes of steel ball.Claim that here fixing steel ball particle swarm is called the spherical array model.Need utilize dynamic pressure transducer to the stressed direct measurement of the unstable state of spherical array model in the experiment; This is the emphasis and the difficult point of this experiment; Also relate to the particle swarm resistance coefficient model of being set up and objectively to reflect the stressed and motion of particle swarm, yet how to utilize dynamic pressure transducer to realize that the suffered unstable state force measurement of spherical array model is a problem demanding prompt solution.
Summary of the invention
To the problem that exists in the experiment described in the above-mentioned background technology, the purpose of the utility model is to provide a kind of sensor fastening device that shock wave loads immobilized particles crowd unstable state power of measuring.
For realizing above-mentioned purpose, the technical scheme that the utility model is taked is:
The utility model comprises base and cage shape support two parts, wherein:
1) base comprises: base upper cover plate, base backing plate and base lower cover; Fuse with the base backing plate between base upper cover plate and base lower cover;
2) cage shape support comprises: cage shape support top cover, cage shape support bottom, four connecting links and sensor threads abutment ring; After four connecting rods that are equally spaced pass the firm banking upper cover plate; Cage shape support top cover and the cage shape support bottom that is positioned at below the base upper cover plate are solidly fixed; One end of pressure transducer passes behind the firm banking upper cover plate center pit until cage shape support bottom; Through the locking of sensor threads abutment ring in base upper cover plate lower surface, be filled with fluid between an end of pressure transducer and cage shape support bottom endoporus, pressure transducer links to each other with high-speed data acquistion system.
The beneficial effect that the utlity model has is:
The utility model fixes the unstable state power that can survey the excited wave effect of various spherical array model institute behind the sensor easily; Realized loading the fixing of pressure transducer in the immobilized particles crowd experiment at shock wave, can be to the direct convenient measurement of the suffered unstable state power of immobilized particles crowd carry out later experimental work.
Description of drawings
Fig. 1 is the one-piece construction figure of sensor fastening device.
Fig. 2 is the enlarged diagram of cage shape support A among Fig. 1.
Fig. 3 is the general arrangement of shock tube experiment.
Fig. 4 is the vertical view of base upper cover plate 1 among Fig. 1.
Fig. 5 is the side view of base backing plate 2 among Fig. 1.
Fig. 6 is the vertical view of base lower cover 3 among Fig. 1.
Fig. 7 is the enlarged front view of sensor threads abutment ring 8 among Fig. 2.
Fig. 8, Fig. 9 are respectively the front view and the vertical views of cage shape support bottom 5 among Fig. 2.
Figure 10 is the vertical view of cage shape support top cover 4 among Fig. 2.
Figure 11 is the structural drawing of geometrical clamp 18 among Fig. 3.
Among the figure: 1, base upper cover plate, 2, the base backing plate, 3, the base lower cover, 4, cage shape support top cover, 5, cage shape support bottom; 6, connecting link, 7, pressure transducer, 8, the sensor threads abutment ring, 9, probe; 10, test section, 11, high-speed data acquistion system, 12, dynamic dynamometer, 13, sensor fastening device; 14, gas cylinder, 15, by drives section, 16, aluminum diaphragm bearing, 17, driving section; 18, geometrical clamp, 19, the shock tube stand, 20, threaded hole, 21, four holes being equally spaced.
Embodiment
Below in conjunction with accompanying drawing and instance the utility model is further specified.
Like Fig. 1, shown in Figure 2, the utility model comprises: base and cage shape support two parts, and wherein base comprises: base upper cover plate 1, base backing plate 2 and base lower cover 3, wherein structure such as Fig. 5, shown in Figure 6 of base backing plate 2 and base lower cover 3; Cage shape support comprises: cage shape support top cover 4, cage shape support bottom 5, connecting link 6 and sensor threads abutment ring 8 (its structure is as shown in Figure 7), and wherein connecting link 6 is perfect threads; The both sides of four base backing plates 2 all have threaded hole, and base upper cover plate 1 and base lower cover 3 are also corresponding respectively has threaded hole, and these three parts are connected into integral body with bolt; Pressure transducer 7 is tightened onto 20 li of the threaded holes at base upper cover plate 1 center, as shown in Figure 4; Then sensor threads abutment ring 8 is screwed into the thread segment of the pressure transducer 7 below the base upper cover plate 1; After four perfect thread connecting links 6 pass four holes 21 that are equally spaced of base upper cover plate 1 then; Cage shape support top cover 4 and cage shape support bottom 5 are linked into an integrated entity; And envelope has fluid between the interior ring boss of cage shape support bottom 5 and pressure transducer 7, the wherein structure of cage shape support bottom 5 such as Fig. 8, shown in Figure 9, and the structure of cage shape support top cover 4 is shown in figure 10.To assemble then on the stand of test section 10 belows that the device of accomplishing is placed to shock tube, and device pedestal lower cover 3 and shock tube stand 19 will be fixed together with four geometrical clamps 18 (its structure is shown in figure 11), as shown in Figure 3; The top of one one metal wire is passed the aperture on test section 10 walls; After the spherical array model is fixed on test section 10 inside; Be fixed in the wire end knotting on test section 10 walls; And after tinsel top passes the aperture of test section 10 walls belows, pass the aperture in the middle of the cage shape support top cover 4 that is positioned at test section 10 vertical lower again, be strained and fixed then; Then pressure transducer 7 is connected on the high-speed data acquistion system 11; Probe with dynamic dynamometer 12 directly contacts the spherical array model again; As shown in Figure 3, give dynamic axial force of spherical array model this moment, dynamically dynamometer 12 can collect signal simultaneously with high-speed data acquistion system 11; Because what dynamically dynamometer 12 obtained is the axially loaded signal of spherical array model, be the pressure signal of sensor and high-speed data acquistion system 11 obtains; If two kinds of signals that obtain all represent with the curve form that coordinate system is arranged, just can accomplish and demarcate through contrasting the relation of the signal that unstable state power that these two curves confirm that the spherical array model is suffered and high-speed data acquistion system collect.
The utility model is mainly made with ferrous materials, and wherein sensor threads abutment ring, cage shape support top cover and cage shape support bottom and perfect thread connecting link are made with stainless steel material.
Concrete application in the experiment:
Next, just can carry out the experiment that shock wave loads the immobilized particles crowd, accomplish unstable state force measurement the excited wave effect of immobilized particles crowd institute:
The structure of used shock tube is as shown in Figure 3 in the experiment, and 15 are driven section; 17 for driving section; The 10th, the test section in the shock tube is made with plexi-glass tubular, is convenient to observe, and the spherical array model just is fixed on the inside of test section 10; 16 place's clamping aluminum diaphragms will the section of driving and driven section and separate.Nitrogen in the gas cylinder 14 is charged to the driving section 17 of shock tube; Rupture of membranes produced supersonic airstream and produces shock wave after pressure reached certain numerical value; The spherical array model is strained the high-intensity fine tinsel simultaneously owing to the effect that receives the unstable state power that shock wave applies produces certain axial displacement, again through device tension cage shape support bottom 5; Make fluid receive the effect of snap-in force, pressure signal is received and outputs on the high-speed data acquistion system 11 by sensor then.The relation of the signal that collects according to the stressed and high-speed data acquistion system 11 of the spherical array model of having demarcated just can be confirmed the size of the unstable state power that the spherical array model is suffered.
This method of using is directly measured the stress value of particle, has advantage simple to operation.
Claims (1)
1. measure the sensor fastening device that shock wave loads immobilized particles crowd unstable state power for one kind, it is characterized in that: comprise base and cage shape support two parts, wherein:
1) base comprises: base upper cover plate (1), base backing plate (2) and base lower cover (3); Fuse with base backing plate (2) between base upper cover plate (1) and base lower cover (3);
2) cage shape support comprises: cage shape support top cover (4), cage shape support bottom (5), four connecting links (6) and sensor threads abutment ring (8); After four connecting rods (6) that are equally spaced pass firm banking upper cover plate (1); The cage shape support bottom (5) that cage shape support top cover (4) is following with being positioned at base upper cover plate (1) is solidly fixed; One end of pressure transducer (7) passes behind firm banking upper cover plate (1) center pit until cage shape support bottom (5); Lock in base upper cover plate (1) lower surface through sensor threads abutment ring (8); Be filled with fluid between one end of pressure transducer (7) and cage shape support bottom (5) endoporus, pressure transducer (7) links to each other with high-speed data acquistion system (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201303046U CN202547853U (en) | 2012-03-31 | 2012-03-31 | Sensor fixing device capable of measuring non-steady-state force of shock wave loading fixed particle swarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201303046U CN202547853U (en) | 2012-03-31 | 2012-03-31 | Sensor fixing device capable of measuring non-steady-state force of shock wave loading fixed particle swarm |
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| Publication Number | Publication Date |
|---|---|
| CN202547853U true CN202547853U (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201303046U Withdrawn - After Issue CN202547853U (en) | 2012-03-31 | 2012-03-31 | Sensor fixing device capable of measuring non-steady-state force of shock wave loading fixed particle swarm |
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| Country | Link |
|---|---|
| CN (1) | CN202547853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-03-31 CN CN2012201303046U patent/CN202547853U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102620880B (en) * | 2012-03-31 | 2013-11-06 | 浙江理工大学 | Sensor fixing device for measuring unsteady force by utilizing shock waves to load and fix particle swarm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20131106 |
|
| RGAV | Abandon patent right to avoid regrant |