CN208383175U - The intracavitary ignition process camera system of shock tube - Google Patents
The intracavitary ignition process camera system of shock tube Download PDFInfo
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- CN208383175U CN208383175U CN201820867026.XU CN201820867026U CN208383175U CN 208383175 U CN208383175 U CN 208383175U CN 201820867026 U CN201820867026 U CN 201820867026U CN 208383175 U CN208383175 U CN 208383175U
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- tube body
- pressure sensor
- shock tube
- oscillograph
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Abstract
The utility model discloses a kind of intracavitary ignition process camera system of shock tube, which includes shock tube tube body, tube body tail portion convex shoulder, end cap, high-speed camera, monochromator and oscillograph；Optical glass is provided between tube body tail portion convex shoulder and end cap；First pressure sensor, second pressure sensor and optical window are provided on the side wall of shock tube tube body；The signal output end of first pressure sensor and the trigger signal input terminal of high-speed camera connect, and the voltage signal output end of high-speed camera and the second signal input channel of oscillograph connect；The signal output end of second pressure sensor and the first signal input channel of oscillograph connect.The system of the utility model triggers high-speed camera by pressure sensor, and high-speed camera triggers oscillograph, while this triggering mode can make ignition process in high-speed camera shooting shock tube, oscillograph synchronous recording pressure signal and optical signal data.
Description
Technical field
The utility model relates to shock tube camera systems, in particular to a kind of intracavitary ignition process camera system of shock tube.
Background technique
Shock tube is the experimental provision instantaneously completed using shock wave to gaseous mixture pressurized, heated, and shock tube is divided into three parts:
High pressure section, interlude, low pressure stage.Interlude has two diaphragms to separate high pressure section and low pressure stage, in experimentation, interlude two
It opens diaphragm successively to rupture, high pressure section gas, which is directly contacted with low pressure stage gas, generates shock wave, and shock wave is propagated to low pressure stage, shock wave pair
Low pressure stage gas has strong compression, and moment increases low pressure stage gas pressure, temperature.Because shock wave pressurized, heated gaseous mixture
Time is extremely short, therefore can be considered adiabatic compression process.Diaphragm two sides pressure difference is adjusted, i.e. adjusting high pressure section gas and low pressure stage gas
Pressure difference, will lead to when high pressure gas is contacted from low-pressure gas generate the speed of shock wave it is different, so that shock wave is to low pressure stage gas
Compression effectiveness is different, and the raised degree of low pressure stage gas pressure, temperature also can be different.
Conducted a research using shock tube test when, many factors will affect experimental result, such as: shock wave bifurcated, temperature point
Uneven, difference kindling delay determination method of cloth etc..Shock wave bifurcated can make the gas in the inswept region of reflected shock wave that mixed flow stream occur
It is dynamic, inhibit ignition process；Temperature unevenness will lead to kindling and first occur in certain high-temperature areas, influence experimental result；It is same
Group experiment, different processing methods can also generate the result that there is some difference.Therefore, design that a kind of shock tube is intracavitary to catch fire
Journey camera system is used to understand actual ignition process in tube body, studies shock wave bifurcated, temperature unevenness etc., can
Deeper into understanding these factors influenced caused by fire behaviour.
Summary of the invention
The purpose of this utility model seeks to provide a kind of intracavitary ignition process camera system of shock tube, which passes through pressure
Force snesor triggers high-speed camera, and high-speed camera triggers oscillograph, and this triggering mode can be such that high-speed camera shoots
In shock tube while ignition process, oscillograph synchronous recording pressure signal and optical signal data.
To achieve the above object, the intracavitary ignition process camera system of shock tube designed by the utility model, including shock wave
Pipe tube body is characterized in that further include tube body tail portion convex shoulder, end cap, high-speed camera, monochromator and oscillograph；
Optical glass is provided between tube body tail portion convex shoulder and end cap, tube body tail portion convex shoulder is arranged in shock tube
One end of tube body is integrally formed with it, is fixedly connected between the end cap and tube body tail portion convex shoulder by bolt assembly；
First pressure sensor, second pressure sensor and optical window are provided on the side wall of the shock tube tube body
Mouthful；The signal output end of the first pressure sensor and the trigger signal input terminal of high-speed camera connect, and the high speed is taken the photograph
The voltage signal output end of camera and the second signal input channel of oscillograph connect；
The signal output end of the second pressure sensor and the first signal input channel of oscillograph connect；The optics
The optical signal input of the light signal output end of window and monochromator connects, the voltage signal output end of monochromator and oscillograph
The connection of third signal input channel.
Further, the inner cavity of tube body tail portion convex shoulder is provided with first annular groove, in the first annular groove
Equipped with the first washer；
The inner cavity of the end cap is provided with the second annular groove positioned opposite with first annular groove, second annular
Second packing ring is equipped in groove；
The two sides of the optical glass are gripped by the first washer with second packing ring.
Further, the trigger signal input terminal of the signal output end and high-speed camera of the first pressure sensor it
Between circuit on be provided with the first charge amplifier.
Further, between the signal output end of the second pressure sensor and the first signal input channel of oscillograph
Circuit on be provided with the second charge amplifier.
Further, the first pressure sensor, second pressure sensor and optical window are located at the shock tube
On the same radial section of tube body.
Further, the focus of the high-speed camera be located at the first pressure sensor, second pressure sensor, with
And on the same radial section of the shock tube tube body where optical window.
Still further, the center-hole diameter of the end cap is equal with shock tube internal diameter of tube body.
Further, it is logical that several bolts circumferentially are correspondingly arranged on tube body tail portion convex shoulder and end cap
Via hole.
Compared with the prior art, the advantages of the utility model are:
First, the intracavitary ignition process camera system design of the shock tube of the utility model has shock tube tube body, high-speed camera
Machine, monochromator and oscillograph, be provided on the side wall of shock tube tube body first pressure sensor, second pressure sensor, with
And optical window, high-speed camera is triggered by pressure sensor in this way, high-speed camera triggers oscillograph, this synchronous triggering
While mode can make ignition process in high-speed camera shooting shock tube, oscillograph synchronous recording pressure signal and optical signal
Data can observe actual ignition process in tube body by the system, realize to shock wave bifurcated, temperature unevenness and kindling
Delay determination method etc. is studied.
Second, the inner cavity of the tube body tail portion convex shoulder of the utility model is provided with first annular groove, in first annular groove
Equipped with the first washer, the inner cavity of end cap is provided with the second annular groove positioned opposite with first annular groove, the second annular
Second packing ring is equipped in groove；It avoids directly contacting or touching with shock tube tube body and end cap in this way, can protect optical glass
It hits and damages.In addition, the two sides of optical glass are gripped by the first washer with second packing ring, frictional force is big, secured
Property is strong, is not susceptible to move, and the first washer and second packing ring also function to the effect of sealing while protecting optical glass.
Third, the first pressure sensor of the utility model, second pressure sensor and optical window swash positioned at described
On the same radial section of wave duct tube body, and the focus of high-speed camera is located at the first pressure sensor, second pressure
On the same radial section of shock tube tube body where sensor and optical window, the kindling of such high-speed camera shooting
Picture and kindling delay data have more comparativity.
Detailed description of the invention
Fig. 1 is a kind of fractionation structural representation of the intracavitary ignition process camera system of shock tube；
Fig. 2 is the assembling structure schematic diagram of Fig. 1 shock tube tube body；
Fig. 3 is the side structure schematic view of end cap in Fig. 1；
In figure, shock tube tube body 1, tube body tail portion convex shoulder 2, first annular groove 2.1, end cap 3, second annular groove 3.1,
High-speed camera 4, monochromator 5, oscillograph 6 (the first signal input channel 6.1, second signal input channel 6.2, third signal
Input channel 6.3), optical glass 7, first pressure sensor 8, second pressure sensor 9, optical window 10, the first washer 11,
Second packing ring 12, the first charge amplifier 13, the second charge amplifier 14, bolt through hole 15.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
The intracavitary ignition process camera system of shock tube as shown in Figure 1, including shock tube tube body 1, further include tube body tail portion
Convex shoulder 2, end cap 3, high-speed camera 4, monochromator 5 and oscillograph 6；Light is provided between tube body tail portion convex shoulder 2 and end cap 3
Glass 7 is learned, one end that shock tube tube body 1 is arranged in tube body tail portion convex shoulder 2 is integrally formed with it, end cap 3 and tube body tail portion convex shoulder 2
Between be fixedly connected by bolt assembly；First pressure sensor 8 is provided on the side wall of shock tube tube body 1, second pressure passes
Sensor 9 and optical window 10；The signal output end of first pressure sensor 8 and the trigger signal input terminal of high-speed camera 4
Connection, the voltage signal output end of high-speed camera 4 are connect with the second signal input channel 6.2 of oscillograph 6, and first pressure passes
The amplification of the first charge is provided on circuit between the signal output end of sensor 8 and the trigger signal input terminal of high-speed camera 4
Device 13.First pressure sensor 8 is used to trigger high-speed camera 4, and high-speed camera 4 is connect with oscillograph 6, works as high-speed camera
4 can generate voltage signal when being triggered is transferred to oscillograph 6, the triggering record kindling delay data of oscillograph 6, in such manner, it is possible to real
The now synchronous recording of kindling picture and the delay data that catches fire.
In above-mentioned technical proposal, the signal output end of second pressure sensor 9 and the first signal input channel of oscillograph 6
6.1 connection；On circuit between the signal output end of second pressure sensor 9 and the first signal input channel 6.1 of oscillograph 6
It is provided with the second charge amplifier 14.Second pressure sensor 9 is connect with the second charge amplifier 14, second pressure sensor 9
The effect of compression power (in experimentation, low pressure stage region in shock wave is inswept shock tube is increased by the inswept areal pressure of shock wave, this
Pressure is to refer to the inswept rear pressure generated of shock wave) voltage signal is generated, it is transferred to the second charge amplifier 14, the second charge is put
Big device 14 adjusts this voltage signal, and is passed to oscillograph 6, and oscillograph 6 records the situation of change of pressure.
In above-mentioned technical proposal, the light signal output end of optical window 10 is connect with the optical signal input of monochromator 5, single
The voltage signal output end of color instrument 5 is connect with the third signal input channel 6.3 of oscillograph 6, optical window 10 by optical fiber with
Monochromator 5 connects, and monochromator 5 converts optical signal into voltage signal, and is passed to oscillograph 6, and oscillograph 6 records letter
Number situation of change.
In above-mentioned technical proposal, the light signal output end of optical window 10 is connect with the optical signal input of monochromator 5, single
The voltage signal output end of color instrument 5 is connect with the third signal input channel 6.3 of oscillograph 6.First pressure sensor 8, second
Pressure sensor 9 and optical window 10 are located on the same radial section of shock tube tube body 1.The focus position of high-speed camera 4
It is cut in the same radial direction of the shock tube tube body 1 where first pressure sensor 8, second pressure sensor 9 and optical window 10
On face, in this way, kindling picture and kindling delay data that high-speed camera 4 is shot have more comparativity.This system passes through the first pressure
Force snesor triggers high-speed camera, and high-speed camera triggers oscillograph, and this synchronous triggering mode can make high-speed camera
While shooting ignition process in shock tube, oscillograph synchronous recording pressure signal and optical signal data can pass through the system
Shock wave bifurcated, temperature unevenness etc. are studied in actual ignition process in observation tube body, realization.
As shown in Fig. 2, the inner cavity of tube body tail portion convex shoulder 2 is provided with first annular groove 2.1, in first annular groove 2.1
Equipped with the first washer 11；The inner cavity of end cap 3 is provided with the second annular groove 3.1 positioned opposite with first annular groove 2.1,
Second packing ring 12 is equipped in second annular groove 3.1；The two sides of optical glass 7 are pressed from both sides by the first washer 11 with second packing ring 12
Hold fixation.The center-hole diameter of end cap 3 is equal with the internal diameter of shock tube tube body 1, avoids and swashs in this way, can protect optical glass
Wave duct tube body and end cap are directly contacted or are collided and damage.In addition, the two sides of optical glass pass through the first washer and second
Washer grips, and frictional force is big, fastness is strong, is not susceptible to moving influence experimental result, and the first washer and second packing ring exist
The effect of sealing is also functioned to while protecting optical glass.
Pass through as shown in figure 3, being correspondingly arranged on several bolts circumferentially on tube body tail portion convex shoulder 2 and end cap 3
Hole 15.Preferably, the number of bolt through hole 15 is 6~10.When installation, end cap 3 is circumferentially rotated, makes end cap 3 and tube body tail
The through-hole of portion's convex shoulder 2 aligns, and bolt is passed through through-hole, tightening nut makes optical glass 7 and the first washer 11, second packing ring 12
It fits closely, in this way, the first washer 11, second packing ring 12 also function to the effect of sealing while protecting optical glass 7.
The course of work of the utility model: the first washer 11, optical glass 7, second packing ring 12 are sequentially placed in order
Between tube body tail portion convex shoulder 2 and end cap 3, it is inserted into bolt in the through-hole that tube body tail portion convex shoulder 2 and end cap 3 penetrate through, it is appropriate to twist
Tight nut be tightly pressed at optical glass 7 can not only on washer, but be unlikely to pressure tension make optical glass 7 directly with swash
Wave duct tube body 1 or end cap 3 contact and cause breakage.In experimentation, the position at 8 place of first pressure sensor that shock wave is inswept,
The effect of 8 compression power of first pressure sensor generates voltage signal, and voltage signal reaches the first charge amplifier 13, and the first charge is put
Big device 13 enhances this voltage signal and reaches high-speed camera 4 again, and triggering high-speed camera 4 works.High-speed camera and oscillograph 6
Connection, the high-speed camera 4 being triggered generate voltage signal and are transferred to oscillograph 6, trigger 6 start recording data of oscillograph.
The above is only the specific embodiments of the utility model, it is noted that remaining unspecified content is existing
Technology, anyone skilled in the art is in the revealed technical scope of the utility model, the variation that can readily occur in
Or replacement, it should be covered within the scope of the utility model.
Claims (8)
1. a kind of intracavitary ignition process camera system of shock tube, including shock tube tube body (1), it is characterised in that: further include tube body
Tail portion convex shoulder (2), end cap (3), high-speed camera (4), monochromator (5) and oscillograph (6)；
It is provided between tube body tail portion convex shoulder (2) and end cap (3) optical glass (7), tube body tail portion convex shoulder (2) setting
It is integrally formed in one end of shock tube tube body (1) with it, passes through bolt group between the end cap (3) and tube body tail portion convex shoulder (2)
Part is fixedly connected；
First pressure sensor (8), second pressure sensor (9), Yi Jiguang are provided on the side wall of the shock tube tube body (1)
It learns window (10)；The signal output end of the first pressure sensor (8) and the trigger signal input terminal of high-speed camera (4) connect
It connects, the voltage signal output end of the high-speed camera (4) is connect with the second signal input channel (6.2) of oscillograph (6)；
The signal output end of the second pressure sensor (9) is connect with the first signal input channel (6.1) of oscillograph (6)；
The light signal output end of the optical window (10) is connect with the optical signal input of monochromator (5), the voltage letter of monochromator (5)
Number output end is connect with the third signal input channel (6.3) of oscillograph (6).
2. the intracavitary ignition process camera system of shock tube according to claim 1, it is characterised in that: the tube body tail portion is convex
The inner cavity of shoulder (2) is provided with first annular groove (2.1), is equipped with the first washer (11) in the first annular groove (2.1)；
The inner cavity of the end cap (3) is provided with and first annular groove (2.1) second annular groove (3.1) positioned opposite, institute
It states in second annular groove (3.1) equipped with second packing ring (12)；
The two sides of the optical glass (7) are gripped by the first washer (11) with second packing ring (12).
3. the intracavitary ignition process camera system of shock tube according to claim 1, it is characterised in that: the first pressure passes
The first charge is provided on circuit between the signal output end of sensor (8) and the trigger signal input terminal of high-speed camera (4)
Amplifier (13).
4. the intracavitary ignition process camera system of shock tube according to claim 1 or 2 or 3, it is characterised in that: described second
It is provided on circuit between the signal output end of pressure sensor (9) and the first signal input channel (6.1) of oscillograph (6)
Second charge amplifier (14).
5. the intracavitary ignition process camera system of shock tube according to claim 1 or 2 or 3, it is characterised in that: described first
Pressure sensor (8), second pressure sensor (9) and optical window (10) are located at the same diameter of the shock tube tube body (1)
To on section.
6. the intracavitary ignition process camera system of shock tube according to claim 5, it is characterised in that: the high-speed camera
(4) focus is located at swashing where the first pressure sensor (8), second pressure sensor (9) and optical window (10)
On the same radial section of wave duct tube body (1).
7. the intracavitary ignition process camera system of shock tube according to claim 1 or 2 or 3, it is characterised in that: the end cap
(3) center-hole diameter is equal with the internal diameter of shock tube tube body (1).
8. the intracavitary ignition process camera system of shock tube according to claim 1 or 2 or 3, it is characterised in that: the tube body
Several bolt through holes (15) circumferentially are correspondingly arranged on tail portion convex shoulder (2) and end cap (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820867026.XU CN208383175U (en) | 2018-06-05 | 2018-06-05 | The intracavitary ignition process camera system of shock tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820867026.XU CN208383175U (en) | 2018-06-05 | 2018-06-05 | The intracavitary ignition process camera system of shock tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208383175U true CN208383175U (en) | 2019-01-15 |
Family
ID=64969104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820867026.XU Active CN208383175U (en) | 2018-06-05 | 2018-06-05 | The intracavitary ignition process camera system of shock tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208383175U (en) |
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2018
- 2018-06-05 CN CN201820867026.XU patent/CN208383175U/en active Active
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