CN113030507A - Novel method for testing detonation velocity of detonating tube - Google Patents
Novel method for testing detonation velocity of detonating tube Download PDFInfo
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- CN113030507A CN113030507A CN202110408963.5A CN202110408963A CN113030507A CN 113030507 A CN113030507 A CN 113030507A CN 202110408963 A CN202110408963 A CN 202110408963A CN 113030507 A CN113030507 A CN 113030507A
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- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 238000005474 detonation Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims description 9
- 238000012956 testing procedure Methods 0.000 claims 1
- 238000010998 test method Methods 0.000 abstract description 10
- 230000000977 initiatory effect Effects 0.000 abstract description 2
- 238000007405 data analysis Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010892 electric spark Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000013211 curve analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/68—Devices characterised by the determination of the time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention belongs to the technical field of initiating devices, and relates to a novel method for testing the detonation velocity of a detonating tube, which comprises the following steps: the device comprises a detonating tube fixing device, a photoelectric sensor fixing device, an optical signal receiving part, an oscilloscope, a detonating device and a tested detonating tube; the fixing device of the detonating tube is a cylinder body with known perimeter, the detonating tube is evenly and tightly wound on the cylinder body, a slit parallel to the central axis of the cylinder body is reserved at the joint part of the cylinder body and the detonating tube, the fixing device of the photoelectric sensor is fixed at the slit, so that the photoelectric sensor receives the optical signal of the detonating tube detonating and converts the optical signal into an electrical signal to be displayed by the oscilloscope, and the detonating time of each detonating tube can be obtained from the waveform recorded by the oscilloscope, thereby calculating the detonating speed. The invention can obtain the detonation velocity of the multi-section detonating tube in one test by only using one photoelectric sensor, has accurate test and reliable data, reduces test procedures and provides a simple and accurate new test method for the detonation velocity test of the detonating tube.
Description
Technical Field
The invention belongs to the technical field of detonating equipment, and particularly relates to a novel method for testing detonation velocity of a detonating tube.
Background
The existing detonation propagation test methods of the detonating tube comprise a photoelectric method and a high-speed photography method in a laboratory, an on-off method, a fusing method, a membrane breaking method, a plug method and the like in field test, wherein the photoelectric method is used for realizing reliable data, and the test method is simpler.
In the photoelectric test method for detonation velocity of the detonator, a photoelectric sensor is mainly adopted to receive optical signals of detonation of the detonator with a certain length, a time interval recorder records the time between the signals, and the detonation velocity is calculated.
In the high-speed camera shooting test of the detonating tube detonation velocity, a high-speed camera is mainly used for shooting images of the detonating tube detonation process, an image analysis technology is used for calculating the average detonating tube detonation velocity at adjacent moments, the method can be used for testing the detonating tube detonation continuous velocity, and the method is used for testing the detonating tube detonation velocity in 'blasting equipment' (4 th phase, author, Husheng sea, House method, Xiong Peng and the like) 'high-speed camera shooting research of detonating tube detonation and detonation process' in 2013, so that the detonating and detonation processes of the detonating tube are researched.
In the field test of the detonation velocity of the detonating tube, a time interval test method is mainly adopted, the test method is simple, test data can only meet the field requirements, and the performance research of the detonating tube is insufficient.
Disclosure of Invention
The invention aims to provide a novel detonating tube detonation velocity testing method which is simple in operation, high in testing precision and convenient to popularize, and can obtain the multistage detonating tube detonation velocity in one test by only using one photoelectric sensor aiming at the defects in laboratory and field tests.
The invention relates to a new method for testing detonation velocity of a detonating tube, wherein a test system comprises: detonator fixing device (1), photoelectric sensor fixing device (2), light signal receiving part (3), oscilloscope (4), priming device (5) and by survey detonator (6), its test characterized in that: selecting a detonating tube fixing device with known perimeter, winding a plurality of circles of detonating tubes on the fixing device, installing a photoelectric sensor on a signal output hole of the photoelectric sensor fixing device, connecting an oscilloscope, setting parameters of the oscilloscope, waiting for triggering, reading out the detonating time of each winding section by a time coordinate displayed on the oscilloscope after the detonating tube is detonated by the detonating device, and calculating the detonating speed.
The novel method for testing the detonation velocity of the detonator adopts a barrel structure, the surface of the barrel is provided with a spiral groove, the detonation tube is convenient to wind and fix, a light-transmitting round hole is reserved along the direction parallel to the central axis of the fixing device, and a micropore is reserved between the light-transmitting round hole and the groove and used for receiving a light signal of detonation of the detonator in each winding section.
In the testing process, the detonating tube can be wound on the detonating tube fixing device in two forms, and the detonating tube is directly wound on the spiral groove of the fixing device in the first form; in the second mode, the detonating tube fixing device is provided with a rotary bearing along the middle shaft of the barrel body, the bearing is fixed on the bracket, and the detonating tube is wound on the spiral groove by rotating the detonating tube fixing device.
The invention relates to a novel method for testing detonating velocity of a detonator, wherein the length of the detonator in each testing section is determined by the length of one circle of a spiral groove of a detonating tube fixing device, and detonating tube fixing devices with different circumferences can be selected for testing according to testing requirements.
The invention relates to a new method for testing detonation velocity of a detonating tube, which comprises the following specific test procedures: selecting a cylinder with known perimeter of a detonator fixing device, uniformly and tightly winding the detonator to be detected on a spiral groove of the cylinder, reserving a slit parallel to the axis of the cylinder at the joint of the cylinder and the detonator, fixing a photoelectric sensor fixing device at the slit so that the photoelectric sensor receives an optical signal of detonator explosion transfer, converting the optical signal into an electric signal to be displayed by an oscilloscope, obtaining the propagation time of the detonator in each circle from the waveform recorded by the oscilloscope, and calculating the detonation velocity of the detonator according to the known length of the spiral groove of the cylinder.
Drawings
FIG. 1 is a schematic diagram of a system for testing the detonation velocity of the detonating tube;
FIG. 2 is a schematic view of a detonator fixing device according to the novel method for testing the detonation velocity of the detonator of the present invention;
FIG. 3 is an original waveform diagram for testing the detonation propagation time of the detonating tube when the length of one circle of the spiral groove is 167 mm;
FIG. 4 is a waveform diagram obtained by testing detonation propagation time of a detonating tube when the length of one circle of the spiral groove is 167 mm;
Detailed Description
Example 1 typical test results and data analysis.
1.1 test procedure. Selecting a cylinder with a circumference of 167mm in length of a spiral groove, cutting out a certain length of detonating tube to be tested, uniformly and tightly winding the detonating tube to be tested on the spiral groove of the cylinder, mounting a photoelectric sensor on a signal output hole of a photoelectric sensor fixing device, connecting an oscilloscope, setting parameters of the oscilloscope to enable the oscilloscope to be in a waiting trigger state, detonating the detonating tube by an initiation device, and recording a detonating time curve of the detonating tube by the oscilloscope.
1.2 test result curve analysis. Fig. 3 is an original waveform diagram of explosion propagation time of a test detonating tube when the length of one circle of the spiral groove is 167mm, in the test process, a capacitance type initiator is adopted to generate electric sparks, the peak at the A position is an electric signal generated by a photoelectric sensor when the capacitance is discharged at high voltage, the peak at the B position is a peak generated instantly when the electric sparks ignite the detonating tube, then the detonating tube is detonated, explosion propagation is carried out along the spiral groove of the cylinder, the section C to the section D is an unstable detonation propagation stage of detonation wave of the detonating tube, the section D to the section E is a stable detonation stage of detonation of the detonating tube, and the section is an effective data reading section.
1.3 data analysis. Fig. 4 is an amplification curve from segment D to segment E, the time between two peaks on the curve is read, segment D to segment E sequentially reads 8 time data, the detonation velocity of each segment is calculated according to the length of 167mm of a circle of the spiral groove of the cylinder, the average detonation velocity and the standard deviation are calculated, and the test results and data analysis are shown in table 1.
TABLE 1 test results and data analysis
Example 2. a cylinder with a circumferential length of 245mm of the spiral groove was selected for testing.
The test procedure and data analysis were as in example 1, and five sets of experimental tests were carried out, and the data recording and data processing results are shown in table 2.
From the analysis of table 2, in the process of carrying out one-time test, a plurality of sections of test time can be obtained, a plurality of detonation velocities are calculated, eight sections of test time are taken in the effective section of each group, and the average detonation velocity, the standard deviation and the relative range (precision) are calculated; the standard deviation of each group of detonation propagation time is within the range of 0.59-0.98, and the standard deviation of detonation propagation speed is within the range of 7.78-13.05; the precision of the explosion propagation time is 0.74-2.22%, the precision of the explosion propagation speed is 1.13-2.02%, and the test precision is high.
Table 2 five groups of experimental results and data analysis
Claims (6)
1. A new method for testing detonation velocity of a detonating tube is characterized in that a test system comprises: the device comprises a detonating tube fixing device (1), a photoelectric sensor fixing device (2), an optical signal receiving part (3), an oscilloscope (4), a detonating device (5) and a to-be-tested detonating tube.
2. The novel method for testing the detonation velocity of the detonating tube according to claim 1 is characterized in that: selecting a detonating tube fixing device with known perimeter, winding a plurality of circles of detonating tubes on the fixing device, installing a photoelectric sensor on a signal output hole of the photoelectric sensor fixing device, connecting an oscilloscope, setting parameters of the oscilloscope, waiting for triggering, reading out the detonating time of each winding section by a time coordinate displayed on the oscilloscope after the detonating tube is detonated by the detonating device, and calculating the detonating speed.
3. The novel detonating tube detonation velocity testing method according to claim 1, characterized in that: the detonator fixing device is characterized in that the surface of the cylinder body is provided with a spiral groove, so that the detonator can be wound and fixed conveniently, a light through round hole is reserved along the direction of the central axis parallel to the fixing device, and a micropore is reserved between the light through round hole and the groove and used for receiving an optical signal for detonating of each winding section of the detonator.
4. The novel detonating tube detonation velocity testing method according to claim 1, characterized in that: the detonating tube is divided into two winding modes, wherein the first mode is to directly wind the detonating tube on the spiral groove of the fixing device; in the second mode, the fixing device is provided with a rotary bearing along the middle shaft, the rotary bearing is erected on the support, and the detonating tube is wound on the spiral groove through the rotary fixing device.
5. The novel detonating tube detonation velocity testing method according to claim 1, characterized in that: the length of the detonating tube of each test section is determined by the perimeter of the spiral groove of the fixing device, and the fixing devices with different perimeters are selected for testing according to test requirements.
6. The novel detonating tube detonation velocity testing method according to claim 1, the testing procedure is as follows: the fixing device of the detonating tube is a cylinder body with known perimeter, the detonating tube is evenly and tightly wound on the cylinder body, a slit parallel to the central axis of the cylinder body is reserved at the joint of the cylinder body and the detonating tube, the fixing device of the photoelectric sensor is fixed at the slit, so that the photoelectric sensor receives the optical signal of the detonating tube detonating and converts the optical signal into an electrical signal to be displayed by the oscilloscope, and the propagation time of the detonating tube in each circle can be obtained from the waveform recorded by the oscilloscope, thereby calculating the propagation speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110408963.5A CN113030507A (en) | 2021-04-16 | 2021-04-16 | Novel method for testing detonation velocity of detonating tube |
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| CN202110408963.5A CN113030507A (en) | 2021-04-16 | 2021-04-16 | Novel method for testing detonation velocity of detonating tube |
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Citations (8)
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|---|---|---|---|---|
| US6957566B1 (en) * | 2003-11-17 | 2005-10-25 | Sandia Corporation | Measuring in-situ MDF velocity of detonation |
| CN101435829A (en) * | 2008-12-09 | 2009-05-20 | 中北大学 | Detonation velocity photoelectric test method and apparatus of detonating cord |
| CN102435112A (en) * | 2011-08-18 | 2012-05-02 | 中国科学技术大学 | Underwater continuous pulse shock wave generator |
| CN104316659A (en) * | 2014-11-21 | 2015-01-28 | 华东理工大学 | System and method for monitoring speed change of detonation waves |
| CN204613234U (en) * | 2015-03-23 | 2015-09-02 | 安徽理工大学 | A kind of explosion velocity of explosive proving installation |
| CN106959156A (en) * | 2017-03-09 | 2017-07-18 | 江苏大学 | A kind of helical pipe for being used to study detonation wave propagation |
| CN108519494A (en) * | 2018-04-11 | 2018-09-11 | 安徽理工大学 | A kind of multistage laser method for surveying explosive charge acceleration and speed |
| CN110058039A (en) * | 2019-04-29 | 2019-07-26 | 中国矿业大学(北京) | A kind of detonator explosion velocity measurement method based on digital picture correlation |
-
2021
- 2021-04-16 CN CN202110408963.5A patent/CN113030507A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6957566B1 (en) * | 2003-11-17 | 2005-10-25 | Sandia Corporation | Measuring in-situ MDF velocity of detonation |
| CN101435829A (en) * | 2008-12-09 | 2009-05-20 | 中北大学 | Detonation velocity photoelectric test method and apparatus of detonating cord |
| CN102435112A (en) * | 2011-08-18 | 2012-05-02 | 中国科学技术大学 | Underwater continuous pulse shock wave generator |
| CN104316659A (en) * | 2014-11-21 | 2015-01-28 | 华东理工大学 | System and method for monitoring speed change of detonation waves |
| CN204613234U (en) * | 2015-03-23 | 2015-09-02 | 安徽理工大学 | A kind of explosion velocity of explosive proving installation |
| CN106959156A (en) * | 2017-03-09 | 2017-07-18 | 江苏大学 | A kind of helical pipe for being used to study detonation wave propagation |
| CN108519494A (en) * | 2018-04-11 | 2018-09-11 | 安徽理工大学 | A kind of multistage laser method for surveying explosive charge acceleration and speed |
| CN110058039A (en) * | 2019-04-29 | 2019-07-26 | 中国矿业大学(北京) | A kind of detonator explosion velocity measurement method based on digital picture correlation |
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