CN1221786C - Method for testing temperature of explosive ignition point - Google Patents
Method for testing temperature of explosive ignition point Download PDFInfo
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- CN1221786C CN1221786C CN 02153664 CN02153664A CN1221786C CN 1221786 C CN1221786 C CN 1221786C CN 02153664 CN02153664 CN 02153664 CN 02153664 A CN02153664 A CN 02153664A CN 1221786 C CN1221786 C CN 1221786C
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Abstract
The present invention relates to a method for measuring the temperature of an explosive ignition point. A heating device is used by the method for indirectly heating a measured explosive by a thermometer to ensure the temperature measured by the thermometer is the hot-spot temperature of the explosive ignition point. The present invention comprises the following measuring steps: (1) A suitable thermometer is selected, and contacts the measured explosive; (2) The thermometer is directly heated by a heating device; (3) The heating-up history of the explosive is recorded, and the temperature of the explosive when ignites is read. The thermometer is in a sheet shape, and the size of the thermometer is smaller than that of the heating device. The design of a measuring range can accord with requirements of the measured explosive, thermal response time (relaxation time) can less than 1/10 of the heating characteristic time of the heating device, the temperature conducting coefficient and the heat conducting coefficient of a used material can be at least ten times larger than that of the measured explosive. The temperature of the explosive initiation point, which is directly measured by the method, tokens the physical characteristic of the explosive, physical meaning is specific, and the present invention is convenient for the extensive use of an actual project.
Description
Technical field
The present invention relates to a kind of method of the state when measuring explosive initiation, particularly a kind of method of temperature of measuring the explosive ignition point.
Background technology
At present, normally describe explosive stimulates to external world when detonating sensitivity, for example, in common explosive bursting point test, characterize the heat sensitivity of explosive time delay with the what is called blast of the environment temperature of explosive in the test and explosive with explosive sensitivity; In the shock sensitivity test of explosive, with the amplitude of the shock wave in the test and the shock sensitivity that pulsewidth characterizes explosive.But what explosive sensitivity was described is not the state of explosive itself, only is extraneous quantity of stimulus, and its physical significance is clear and definite inadequately, is not easy to the widespread use of actual engineering.
From existing theory and experimental data, the mechanism of explosive initiation is hot initiation mechanism, to a certain specific explosive, means are a lot of although detonate, but the hot(test)-spot temperature basically identical during its igniting, therefore, the physics sex character when characterizing explosive initiation with this hot(test)-spot temperature is more direct, has realistic meaning in actual engineering.But the method that directly records the hot(test)-spot temperature of explosive ignition point is not seen in report as yet.
Summary of the invention
The objective of the invention is to: provide the method for the hot(test)-spot temperature of the ignition point of a kind of direct measurement explosive own, to solve the shortcoming that explosive sensitivity is clear and definite inadequately with the physical significance that the environmental stimuli amount characterizes indirectly, be not easy to widespread use in the actual engineering.
The object of the present invention is achieved like this:
The present invention is by a kind of suitable thermometer indirect heating explosive, and what guarantee thermometer measure is the hot(test)-spot temperature of explosive ignition point; And directly measure the explosive hot(test)-spot temperature in when igniting with this thermometer, this method comprises following measuring process:
(1) select a thermometer, thermometer and tested explosive keep in touch;
(2) adopt the direct heating-up temperature meter of electric heater unit, and then the tested explosive of indirect heating: the heating plate in the electric heater unit contacts with thermometer, the area of thermometer is less than the area of heating plate in the electric heater unit, there is heat insulation layer at position between heating plate in the electric heater unit and the tested explosive except that thermometer, and thermometer is electrically connected with an amplifier and A/D converter;
(3) by being connected the intensification course of amplifier on the thermometer and A/D converter record explosive, the temperature during igniting of interpretation explosive.
A kind of method of measuring the hot(test)-spot temperature of explosive ignition point may further comprise the steps:
(1) select a thermometer, thermometer and tested explosive keep in touch;
(2) adopt the pressure gas heating arrangement, gas in the pressure gas heating arrangement and direct heating-up temperature meter, and then the tested explosive of indirect heating: the gas in the heating arrangement contacts with thermometer, there is heat insulation layer at position between gas in the pressure gas heating arrangement and the tested explosive except that thermometer, and thermometer is electrically connected with an amplifier and A/D converter;
(3) by being connected the intensification course of amplifier on the thermometer and A/D converter record explosive, the temperature during igniting of interpretation explosive.
Described thermometer, in the form of sheets, its range design should meet the requirement of the explosive of surveying, the thermal response time of thermometer (relaxation time) should be less than 1/10 of Heating Characteristics time of heating arrangement, and the thermal diffusivity of thermometer material therefor and heat-conduction coefficient be big 10 times than the thermal diffusivity of tested explosive and heat-conduction coefficient at least; Like this, could guarantee that thermometric temperature is the temperature of explosive ignition point.
The invention has the advantages that: the state when utilizing the hot(test)-spot temperature of the explosive ignition point that the inventive method directly records to describe explosive initiation, its physical significance is clearer and more definite, is convenient to the widespread use of actual engineering; The method of the hot(test)-spot temperature of direct measurement explosive ignition point provided by the invention, simple, accurate, safety, easy operating.
Description of drawings
Fig. 1. the present invention adopts the partial schematic diagram of Electric heating heating-up temperature meter
Fig. 2. the present invention adopts the device synoptic diagram of electrical heating method of testing
Fig. 3. the present invention adopts the partial schematic diagram of Fast Compression gas heating thermometer
Fig. 4. the present invention adopts the device synoptic diagram of Fast Compression gas heating method of testing
Fig. 5. the test result curve map of the embodiment of the invention 2
Accompanying drawing indicates:
1. insulation and thermal insulation sheet 2. sheet thermometers 3. heating plates
4. insulating heat-conductive sheet 5. plastic plug second 6. thermometer leads
7. heating plate lead 8. plastic plug first 9. compression leg first
10. explosive column 11. compression leg second 12. sleeves
13. bullet 14. hits post first 15. and hits post second
16. gas 17. anvil bodies 18. heat insulation layers
Specific embodiments
Embodiment 1:
Present embodiment is to adopt the mode of electrical heating thermopair to implement method of the present invention, described Electric heating is to be close to thermopair by the heating plate in the electric heater unit directly to heat, the area of thermopair is less than the area of heating plate in the electric heater unit, this thermopair is by two kinds of metal sheet thermometers, thermocouple plate contacts well with tested explosive, there is heat insulation layer at position between electric heater unit and the tested explosive except that thermometer, like this, the heated while explosive of thermopair also is heated, at last, by being connected the intensification course of amplifier on the thermopair and A/D converter record explosive, the temperature during igniting of interpretation explosive.As shown in Figure 2, tested explosive is made the explosive column 10 of 20 * 20 millimeters of Φ, and explosive column 10 is clipped in the middle by vinyon plug first 8, vinyon plug second 5, is contained in internal diameter and is in 20 millimeters the steel bushing 12.Steel compression leg first 9, steel compression leg second 11 compress explosive column 10 and vinyon plug second 5 by external force.The effect of sleeve 12 is to prevent that explosive column 10 is crushed, and the effect of vinyon plug first 8, vinyon plug second 5 prevents that explosive column 10 from extruding the finedraw between two steel compression legs and sleeve 12.In addition, as shown in Figure 2, on the upper surface of vinyon plug second 5 some heating are arranged, temperature measuring equipment, on the upper surface of vinyon plug second 5 heating plate 3 is housed, heating plate 3 is about 50 microns by thickness, be about is 5 millimeters, wide Fe-based amorphous of being about 2 millimeters makes, place one deck insulating heat-conductive sheet 4 on the heating plate 3 again, insulating heat-conductive sheet 4 is about 20 microns mica sheet for thickness, top placement one thermopair 2 of insulating heat-conductive sheet 4, thermopair is that the constantan wire that 10 microns copper sheet and diameter are 30 microns is welded by thickness, about 50 microns of the thickness at solder joint place, length is 4 millimeters, widely being about 1 millimeter, is insulation and thermal insulation sheet 1 around the thermopair 2, and insulation and thermal insulation sheet 1 is about 40 microns kraft capacitor paper for thickness.The effect of insulating heat-conductive sheet 4 is to prevent that the voltage of heating plate 3 from draining on the thermopair 2, and the heat energy on the heating plate 3 is passed to thermopair 2 by insulating heat-conductive sheet 4 simultaneously, and then passes to explosive column 10.The effect of insulation and thermal insulation sheet 1 is to guarantee that the position except that thermopair 2 is not heated on the explosive column 10, and what guarantee promptly that thermopair 2 records is the temperature history of the area of heating surface of tested explosive.Signal on the thermopair send by A/D transducer record after being amplified by amplifier.Measurement result according to the temperature history of the area of heating surface of tested explosive, is determined the hot(test)-spot temperature of tested explosive initiation point as shown in Figure 4.
Embodiment 2:
Present embodiment is to adopt the mode of Fast Compression gas heating thermopair to implement method of the present invention, the mode of described Fast Compression gas heating is by a pressure gas heating arrangement heat hot galvanic couple, this thermopair is by two kinds of metal sheet thermometers, thermocouple plate contacts well with tested explosive, there is heat insulation layer at position between gas in the pressure gas heating arrangement and the tested explosive except that thermometer, like this, the heated while explosive of thermopair also is heated, at last, by being connected the intensification course of amplifier on the thermopair and A/D converter record explosive, the temperature during igniting of interpretation explosive.As shown in Figure 3, tested explosive 10 surfaces are gone up thermocouple plate 2 are installed, and remainder is coated with last layer 502 glue as heat insulation layer 18, and thermocouple plate 2 contacts good with tested explosive 10 surfaces.As shown in Figure 4, tested explosive 10, gas 16 are enclosed in the sleeve 12 by plastic plug first 8, plastic plug second 5.The other end of plastic plug first 8, plastic plug second 5 is separately installed with and hits post first 14, hits post second 15, hitting post second 15 joins with big quality anvil body 17, bullet 13 hits post 14, and then pressure gas 16, make thermocouple plate 2 heating, hot gas is by the tested explosive 10 of thermocouple plate 2 heating, and what guarantee thermocouple plate 2 measurements is hot(test)-spot temperature, and all the other are with embodiment 1.
Embodiment 3:
Present embodiment is to adopt the mode of electrical heating platinized platinum to implement method of the present invention, in the present embodiment, adopting platinized platinum to make that a thickness is about 50 microns, is about is 3 millimeters, the wide thermometer that is about 0.5 millimeter, connect an amplifier and A/D transducer on the platinized platinum, signal on the platinized platinum send by A/D transducer record, according to the temperature history on the tested explosive surface of writing down after being amplified by amplifier, determine the hot(test)-spot temperature of tested explosive initiation point, all the other are with embodiment 1.
Embodiment 4:
Present embodiment is to adopt the mode of Fast Compression gas heating platinized platinum to implement method of the present invention, in the present embodiment, adopting platinized platinum to make that a thickness is about 50 microns, is about is 3 millimeters, the wide thermometer that is about 0.5 millimeter, connect an amplifier and A/D transducer on the platinized platinum, signal on the platinized platinum send by A/D transducer record, according to the temperature history on the tested explosive surface of writing down after being amplified by amplifier, determine the hot(test)-spot temperature of tested explosive initiation point, all the other are with embodiment 2.
Claims (3)
1, a kind of method of temperature of testing the explosive ignition point may further comprise the steps:
(1) select a thermometer, thermometer and tested explosive keep in touch;
(2) adopt the direct heating-up temperature meter of electric heater unit, and then the tested explosive of indirect heating: the heating plate in the electric heater unit contacts with thermometer, the area of thermometer is less than the area of heating plate in the electric heater unit, there is heat insulation layer at position between heating plate in the electric heater unit and the tested explosive except that thermometer, and thermometer is electrically connected with an amplifier and A/D converter;
(3) by being connected the intensification course of amplifier on the thermometer and A/D converter record explosive, the temperature during igniting of interpretation explosive.
2. method of temperature of testing the explosive ignition point may further comprise the steps:
(1) select a thermometer, thermometer and tested explosive keep in touch;
(2) adopt the pressure gas heating arrangement, the direct heating-up temperature meter of gas in the pressure gas heating arrangement, and then the tested explosive of indirect heating: the gas in the heating arrangement contacts with thermometer, there is heat insulation layer at position between gas in the pressure gas heating arrangement and the tested explosive except that thermometer, and thermometer is electrically connected with an amplifier and A/D converter;
(3) by being connected the intensification course of amplifier on the thermometer and A/D converter record explosive, the temperature during igniting of interpretation explosive.
3, press the method for temperature of claim 1 or 2 described test explosive ignition points, it is characterized in that: the thermal response time of described thermometer is less than 1/10 of Heating Characteristics time of heating arrangement, and the thermal diffusivity of thermometer material therefor and heat-conduction coefficient are the thermal diffusivity of tested explosive and 10 times of heat-conduction coefficient at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02153664 CN1221786C (en) | 2002-12-03 | 2002-12-03 | Method for testing temperature of explosive ignition point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02153664 CN1221786C (en) | 2002-12-03 | 2002-12-03 | Method for testing temperature of explosive ignition point |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1504734A CN1504734A (en) | 2004-06-16 |
| CN1221786C true CN1221786C (en) | 2005-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02153664 Expired - Fee Related CN1221786C (en) | 2002-12-03 | 2002-12-03 | Method for testing temperature of explosive ignition point |
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| Country | Link |
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| CN (1) | CN1221786C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738146A (en) * | 2010-01-21 | 2010-06-16 | 西北工业大学 | Gunpowder ignition temperature measuring device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207209B (en) * | 2013-03-22 | 2015-02-11 | 西安近代化学研究所 | High-temperature-fragment heat-conduction ignition device |
| CN110726490B (en) * | 2019-11-08 | 2020-08-04 | 西安交通大学 | Micro-scale initiating explosive device ignition temperature measuring device |
-
2002
- 2002-12-03 CN CN 02153664 patent/CN1221786C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738146A (en) * | 2010-01-21 | 2010-06-16 | 西北工业大学 | Gunpowder ignition temperature measuring device |
| CN101738146B (en) * | 2010-01-21 | 2013-04-17 | 西北工业大学 | Gunpowder ignition temperature measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1504734A (en) | 2004-06-16 |
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