CN117647616A - Thermal safety parameter measuring device for quick response of solid energetic material charge - Google Patents
Thermal safety parameter measuring device for quick response of solid energetic material charge Download PDFInfo
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- CN117647616A CN117647616A CN202410123131.2A CN202410123131A CN117647616A CN 117647616 A CN117647616 A CN 117647616A CN 202410123131 A CN202410123131 A CN 202410123131A CN 117647616 A CN117647616 A CN 117647616A
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- 239000000463 material Substances 0.000 title claims abstract description 47
- 239000007787 solid Substances 0.000 title claims abstract description 32
- 230000004044 response Effects 0.000 title claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 57
- 239000000523 sample Substances 0.000 claims abstract description 18
- 239000013307 optical fiber Substances 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims description 47
- 239000002184 metal Substances 0.000 claims description 47
- 238000005259 measurement Methods 0.000 claims description 21
- 239000002360 explosive Substances 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 239000003814 drug Substances 0.000 claims description 8
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 239000000567 combustion gas Substances 0.000 abstract description 6
- 239000011230 binding agent Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 238000002076 thermal analysis method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000007707 calorimetry Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000004455 differential thermal analysis Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/02—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
- G01N7/06—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder by combustion alone
-
- 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
- G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
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- General Physics & Mathematics (AREA)
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- General Health & Medical Sciences (AREA)
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a thermal safety parameter measuring device for quick response of solid energetic material charge, which seals a charge column made of solid energetic material in a shell, charges the charge by heating a heating rod, when the charge is heated and ignited, high-temperature high-pressure combustion gas can break a diaphragm to drive a piston to move along a movement channel in the shell, and the movement speed of the piston is measured and recorded by an optical fiber probe, a photon Doppler velocimeter and a second oscilloscope which are opposite to the movement channel, and meanwhile, the pressure sensor, a charge amplifier and a first oscilloscope are adopted for measuring and recording the combustion gas pressure of the charge. The thermal safety parameter measuring device can measure the thermal safety parameters such as the critical ignition wall temperature, the critical ignition time, the combustion pressure, the movement speed of the piston and the like of the solid energetic material under different heating conditions, and has the characteristics of simple structure, safe and convenient operation and accurate and reliable measuring result.
Description
Technical Field
The invention relates to the technical field of energetic material thermal safety, in particular to a thermal safety parameter measuring device for quick response of solid energetic material charging.
Background
Along with the process of producing, storing, transporting and using the energetic material, the energetic material is easy to be stimulated by external heat to generate self rapid decomposition reaction, release a large amount of heat and cause thermal runaway, thereby causing combustion explosion accidents, and therefore, the thermal safety problem of the energetic material is paid attention.
Generally, thermal safety of energetic materials is analyzed by thermal analysis experimental methods such as differential thermal analysis, differential scanning calorimetry, thermogravimetric analysis, adiabatic heating calorimetry, etc., which have high measurement accuracy but can only perform thermal reaction analysis for a very small amount of energetic material powder. However, in practical application, the energetic material is always in a certain charge state, and the charge and powder of the energetic material have great difference in structural composition, so that the thermal reaction rule obtained by adopting a thermal analysis experiment method is difficult to be used for thermal safety analysis and evaluation of the charge of the practical energetic material. Therefore, it has been proposed to use a bake-fire test method to investigate the thermal safety of energetic material charges.
At present, methods such as a multi-point temperature measurement experiment, a baking and firing bomb experiment and the like are mainly adopted at home and abroad to measure the thermal safety parameters such as ignition time, ignition temperature and the like before the energy-containing material is charged and ignited. The thermal safety parameters such as reaction pressure, energy release and the like after the energetic material charge is ignited still lack of relevant test measurement means due to high reaction speed and high risk.
Therefore, the thermal safety parameter measurement experimental device with simple structure, safety and reliability can be widely used for rapid reaction of solid energetic material charge, and is a task to be solved urgently.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a thermal safety parameter measuring device for quick response of solid energetic material charge, which can measure the thermal safety parameters such as critical ignition wall temperature, critical ignition time, combustion pressure, movement speed of a piston and the like of the solid energetic material under different heating conditions, has the characteristics of simple structure, safe and convenient operation and accurate and reliable measuring result, and solves the problem that the thermal safety parameters can not be measured when the quick response of the solid energetic material charge occurs in the prior art.
The invention adopts the following specific technical scheme:
the device comprises a shell, a metal plug, a grain, a piston, a heating rod, a first temperature sensor, a second temperature sensor, a pressure sensor, an optical fiber probe, a heat preservation layer, an integrated temperature control-recorder, a charge amplifier, a first oscilloscope, a second oscilloscope and a photon Doppler velocimeter;
the heat preservation layer is coated on the outer side of the shell; the inner cavity of the shell consists of a heating cavity, a medicine loading chamber and a movement channel which are sequentially connected from left to right;
the metal plug is fixedly arranged in the heating cavity;
the heating rod is arranged in the metal plug and is used for heating and charging;
the first temperature sensor is arranged in the metal plug and is used for measuring the temperature of the inner side wall of the metal plug;
the second temperature sensor is arranged on the outer side wall of the metal plug and is used for measuring the temperature of the outer side wall of the metal plug;
the integrated temperature control-recording instrument is connected with the first temperature sensor, the second temperature sensor and the heating rod, and is used for controlling the heating power of the heating rod and storing the temperature information measured by the first temperature sensor and the second temperature sensor;
the explosive column is arranged in the explosive loading chamber, a space is reserved between the right end of the explosive column and the explosive loading chamber, the side wall of the space is provided with the pressure sensor, and the pressure sensor is used for measuring the gas pressure in the explosive loading chamber after the explosive loading is combusted;
a diaphragm for controlling the constraint intensity is arranged between the medicine loading chamber and the motion channel;
the piston can be freely and slidably arranged at the left end of the motion channel along the motion channel;
the optical fiber probe is opposite to the right end outlet of the motion channel and is arranged at intervals and connected with the photon Doppler velocimeter for measuring the motion speed of the piston;
the pressure sensor, the charge amplifier, the first oscilloscope, the second oscilloscope and the photon Doppler velocimeter are connected in sequence; the first oscilloscope is used for recording pressure signals measured by the pressure sensor and triggering the second oscilloscope to record movement speed signals of the piston measured by the photon Doppler velocimeter when the pressure signals are generated.
Furthermore, a round hole is formed in the left end face of the metal plug, and a sealing ring is arranged between the right end face and the heating cavity;
the heating rod is arranged in the round hole.
Further, the inner side wall of the round hole is provided with a first groove;
the first temperature sensor is arranged in the first groove;
the outer side wall of the metal plug is provided with a second groove;
the second temperature sensor is arranged in the second groove.
Furthermore, the sealing ring is made of red copper.
Further, a small hole is formed in the side wall of the space at the right end of the grain;
the pressure sensor is mounted in the aperture.
Further, the right end of the metal plug is connected with the heating cavity through threads.
Still further, a holder for supporting the fiber optic probe is included.
Still further, the device also comprises a bottom plate;
the heat preservation layer and the support are both supported on the top surface of the bottom plate.
Further, the bottom plate is a wood plate.
Further, the heat-insulating layer is made of an aluminum silicate material;
the piston is made of red copper;
the shell and the metal plug are both made of 45# steel.
The beneficial effects are that:
the invention relates to a thermal safety parameter measuring device which is used for measuring thermal safety parameters when a solid energetic material charges and reacts rapidly, a grain made of the solid energetic material is sealed in a shell, the charge is heated by a heating rod arranged in a metal plug, the temperature of the inner side wall and the outer side wall of the metal plug is measured by a temperature sensor, after the charge is heated and ignited, high-temperature high-pressure combustion gas can break a diaphragm to drive a piston to move along a moving channel in the shell, and the moving speed of the piston is measured and recorded by an optical fiber probe, a photon Doppler velocimeter and a second oscilloscope which are opposite to the moving channel, and meanwhile, the pressure of the combustion gas of the charge is measured and recorded by a pressure sensor, a charge amplifier and a first oscilloscope. Therefore, the thermal safety parameter measuring device can measure the thermal safety parameters such as the critical ignition wall temperature, the critical ignition time, the combustion pressure, the movement speed of the piston and the like of the solid energetic material under different heating conditions, has the characteristics of simple structure, safe and convenient operation and accurate and reliable measuring result, and solves the problem that the thermal safety parameters can not be measured when the solid energetic material charges react rapidly in the prior art.
Drawings
FIG. 1 is a schematic diagram of a thermal safety parameter measuring device according to the present invention;
FIG. 2 is a graph of pressure versus time for a solid energetic material measured using the thermal safety parameter measurement apparatus of the present invention;
FIG. 3 is a graph of the velocity of motion versus time of a driving piston when a rapid reaction of a solid energetic material occurs using a thermal safety parameter measurement device of the present invention.
The device comprises a 1-shell, a 2-metal plug, a 3-sealing ring, a 4-grain, a 5-piston, a 6-heating rod, a 7-first temperature sensor, an 8-second temperature sensor, a 9-pressure sensor, a 10-optical fiber probe, an 11-support, a 12-heat preservation layer, a 13-bottom plate, a 14-integrated temperature control-recorder, a 15-charge amplifier, a 16-first oscilloscope, a 17-second oscilloscope and an 18-photon Doppler velocimeter
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in the structure of fig. 1, the embodiment provides a thermal safety parameter measuring device for quick response of solid energetic material charge, which comprises a shell 1, a metal plug 2, a grain 4, a piston 5, a heating rod 6, a first temperature sensor 7, a second temperature sensor 8, a pressure sensor 9, an optical fiber probe 10, an insulating layer 12, an integrated temperature-control-recorder 14, a charge amplifier 15, a first oscilloscope 16, a second oscilloscope 17 and a photon doppler velocimeter 18; the grain 4 is made of a solid energetic material, which can be exemplified by RDX/Al/Binder; the shell 1 and the metal plug 2 can be made of 45# steel; the piston 5 can be made of red copper;
the outside of the shell 1 is coated with a heat preservation layer 12; the insulating layer 12 may be made of an aluminum silicate material; the heat preservation layer 12 can be formed by a heat preservation structure which is buckled up and down symmetrically; heat dissipation during measurement can be prevented by the heat-insulating layer 12;
the internal cavity of the shell 1 consists of a heating cavity, a medicine loading chamber and a movement channel which are sequentially connected from left to right; as shown in the structure of fig. 1, the heating cavity, the medicine loading chamber and the movement channel are all circular cavities, the diameter of the heating cavity is larger than that of the medicine loading chamber, and the diameter of the medicine loading chamber is larger than that of the movement channel;
the metal plug 2 is fixedly arranged in the heating cavity; the metal plug 2 can be fixedly connected with the heating cavity through threaded connection between the right end and the heating cavity; a sealing ring 3 is arranged between the right end surface of the metal plug 2 and the heating cavity; the sealing ring 3 can be made of red copper;
the heating rod 6 is arranged in the metal plug 2 and is used for heating and charging; a round hole is formed in the left end face of the metal plug 2, and a heating rod 6 is placed in the round hole; the heating rod 6 can be inserted into the round hole in a direct-inserting way, and glue solution with good heat conduction performance is coated around the heating rod 6, so that the heating rod 6 and the metal plug 2 can transfer heat in a heat conduction way, and measurement errors are reduced;
the first temperature sensor 7 is arranged on the inner side wall of the round hole on the left end face of the metal plug 2 and is used for measuring the temperature of the inner side wall of the metal plug 2; in order to facilitate the installation of the first temperature sensor 7, a first groove is arranged on the inner side wall of the round hole; the first temperature sensor 7 is arranged in the first groove; the first temperature sensor 7 is used for feeding back the temperature to the integrated temperature controller-recorder 14;
the second temperature sensor 8 is arranged on the outer side wall of the metal plug 2 and is used for measuring the temperature of the outer side wall of the metal plug 2; in order to facilitate the installation of the second temperature sensor 8, a second groove is formed in the outer side wall of the metal plug 2; the second temperature sensor 8 is arranged in the second groove;
the integrated temperature control-recording instrument 14 is connected with the first temperature sensor 7, the second temperature sensor 8 and the heating rod 6, and is used for controlling the heating power of the heating rod 6 and storing the temperature information measured by the first temperature sensor 7 and the second temperature sensor 8;
the grain 4 is placed in the charging chamber, and a space is reserved between the right end of the grain 4 and the charging chamber, namely, a partial cavity with the diameter of the right side of the charging chamber being slightly smaller than that of the grain 4 is used for fixing the grain 4, and a pressure sensor 9 is arranged on the side wall of the shell 1 to measure the combustion gas pressure of charging; a pressure sensor 9 is arranged on the side wall of the space, and the pressure sensor 9 is used for measuring the gas pressure in the charging chamber after the charging is combusted; in order to facilitate the installation of the pressure sensor 9, a small hole is formed in the side wall of the space at the right end of the explosive column 4; the pressure sensor 9 is arranged in the small hole;
a diaphragm for controlling the constraint strength is arranged between the charging chamber and the motion channel; the diaphragm may have a certain thickness;
the piston 5 can be freely and slidably arranged at the left end of the motion channel along the motion channel; the diameter of the piston 5 is smaller than the diameter of the movement channel;
the optical fiber probe 10 is opposite to the right end outlet of the motion channel and is arranged at intervals, namely, a distance is reserved between the optical fiber probe 10 and the motion channel, and the optical fiber probe 10 can be supported by the bracket 11;
the optical fiber probe 10 is connected with a photon Doppler velocimeter 18 and is used for measuring the movement speed of the piston 5; the second oscilloscope 17 is used for recording the movement speed signal of the piston 5;
the pressure sensor 9, the charge amplifier 15, the first oscilloscope 16, the second oscilloscope 17 and the photon Doppler velocimeter 18 are connected in sequence; the first oscilloscope 16 is used for recording the pressure signal measured by the pressure sensor 9, and triggering the second oscilloscope 17 to record the movement speed signal of the piston 5 measured by the photon Doppler velocimeter 18 when the pressure signal is generated.
In order to keep the measurement process stable, the thermal safety parameter measurement device may further include a base plate 13; the bottom plate 13 is a flat plate such as a wood plate; the insulating layer 12 and the bracket 11 are supported on the top surface of the bottom plate 13.
The thermal safety parameter measuring device is used for measuring thermal safety parameters when the solid energetic material is charged and reacts rapidly, when the solid energetic material is measured on the grain 4, the grain 4 made of the solid energetic material is sealed in a charging chamber of the shell 1 through the metal plug 2 and the diaphragm, the shell 1 and the grain 4 are heated through the heating rod 6 placed in the metal plug 2, the heating rate of the heating rod 6 is controlled by the integral temperature control-recorder 14 until the solid energetic material is ignited, and in the heating process, the temperature of the side wall of the metal plug 2 is measured in real time by adopting the temperature sensor, and the temperature information detected by the temperature sensor is recorded and stored through the integral temperature control-recorder 14; when the charge is heated and ignited, high-temperature and high-pressure combustion gas can break through a diaphragm to drive a piston 5 to move along a movement channel in a shell 1, the movement speed of the piston 5 is measured and recorded through an optical fiber probe 10, a photon Doppler velocimeter 18 and a second oscilloscope 17 which are opposite to the movement channel, meanwhile, a pressure sensor 9 arranged on the side wall of the shell 1 is used for measuring the combustion pressure of a solid energetic material after ignition, crystals in the pressure sensor 9 are pressed to generate charge signals, and the charge signals are recorded through a charge amplifier 15 and then through a first oscilloscope 16; the velocity of the piston 5 movement is measured by the fiber optic probe 10 using a photon doppler velocimeter 18 and recorded by a second oscilloscope 17.
Therefore, the thermal safety parameter measuring device can measure the thermal safety parameters such as the critical ignition wall temperature, the critical ignition time, the combustion pressure, the movement speed of the piston 5 and the like of the solid energetic material under different heating conditions, has the characteristics of simple structure, safe and convenient operation and accurate and reliable measuring result, and solves the problem that the thermal safety parameters can not be measured when the solid energetic material charges rapidly react in the prior art.
The specific measurement process of the thermal safety parameter measurement device is as follows:
during measurement, the red copper piston 5 is firstly slid into the bottom of the motion channel of the shell 1 freely; the pressure sensor 9 is installed again; then sequentially placing a solid energetic material RDX/Al/Binder to be tested and a red copper sealing ring 3 into the shell 1, and screwing a metal plug 2 until the solid energetic material RDX/Al/Binder and the red copper sealing ring are completely screwed; then, the first temperature sensor 7 is inserted into a first groove at the inner side of the round hole of the metal plug 2, the second temperature sensor 8 is inserted into a second groove at the outer side of the round hole of the metal plug 2, and the heating rod 6 is placed into the round hole of the metal plug 2; the entire device is then placed on the aluminum silicate insulation 12 and snapped. After the device is assembled, the whole device is placed on a wood board and fixed. Finally, the optical fiber probe 10 supported by the bracket 11 is placed at a position with a certain forward distance from the outlet at the right end of the movement channel of the piston 5, and is used for focusing and fixing;
the first temperature sensor 7 and the second temperature sensor 8 are connected with an integrated temperature control-recorder 14, the pressure sensor 9 is connected with a charge amplifier 15, and the optical fiber probe 10 is connected with a photon Doppler velocimeter 18; at this time, a program of a heating rate of 3K/min is set on the integrated temperature control-recorder 14, the heating rod 6 is controlled to directly heat the metal plug 2 according to a specified heating rate of 3K/min, the temperature of the outer side wall surface of the metal plug 2 is recorded in real time through the integrated temperature control-recorder 14 until the solid energetic material RDX/Al/Binder is ignited, so that the critical ignition wall surface temperature when the solid energetic material RDX/Al/Binder to be detected is ignited is 424K at a given heating rate of 3K/min, the critical ignition time is 4590s, and the combustion pressure time change curve and the driving piston 5 movement speed time change curve are obtained. FIG. 2 shows a graph of pressure versus time for the solid energetic material RDX/Al/Binder described above when a rapid reaction occurs at a ramp rate of 3K/min. FIG. 3 shows a graph of the velocity versus time for the solid energetic material RDX/Al/Binder described above when a rapid reaction occurs at a rate of 3K/min.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. The thermal safety parameter measuring device for the quick response of the solid energetic material charge is characterized by comprising a shell, a metal plug, a grain, a piston, a heating rod, a first temperature sensor, a second temperature sensor, a pressure sensor, an optical fiber probe, an insulating layer, an integrated temperature control-recorder, a charge amplifier, a first oscilloscope, a second oscilloscope and a photon Doppler velocimeter;
the heat preservation layer is coated on the outer side of the shell; the inner cavity of the shell consists of a heating cavity, a medicine loading chamber and a movement channel which are sequentially connected from left to right;
the metal plug is fixedly arranged in the heating cavity;
the heating rod is arranged in the metal plug and is used for heating and charging;
the first temperature sensor is arranged in the metal plug and is used for measuring the temperature of the inner side wall of the metal plug;
the second temperature sensor is arranged on the outer side wall of the metal plug and is used for measuring the temperature of the outer side wall of the metal plug;
the integrated temperature control-recording instrument is connected with the first temperature sensor, the second temperature sensor and the heating rod, and is used for controlling the heating power of the heating rod and storing the temperature information measured by the first temperature sensor and the second temperature sensor;
the explosive column is arranged in the explosive loading chamber, a space is reserved between the right end of the explosive column and the explosive loading chamber, the side wall of the space is provided with the pressure sensor, and the pressure sensor is used for measuring the gas pressure in the explosive loading chamber after the explosive loading is combusted;
a diaphragm for controlling the constraint intensity is arranged between the medicine loading chamber and the motion channel;
the piston can be freely and slidably arranged at the left end of the motion channel along the motion channel;
the optical fiber probe is opposite to the right end outlet of the motion channel and is arranged at intervals and connected with the photon Doppler velocimeter for measuring the motion speed of the piston;
the pressure sensor, the charge amplifier, the first oscilloscope, the second oscilloscope and the photon Doppler velocimeter are connected in sequence; the first oscilloscope is used for recording pressure signals measured by the pressure sensor and triggering the second oscilloscope to record movement speed signals of the piston measured by the photon Doppler velocimeter when the pressure signals are generated.
2. The thermal safety parameter measurement device according to claim 1, wherein a circular hole is formed in the left end face of the metal plug, and a sealing ring is arranged between the right end face and the heating cavity;
the heating rod is arranged in the round hole.
3. The thermal safety parameter measurement device according to claim 2, wherein an inner side wall of the circular hole is provided with a first groove;
the first temperature sensor is arranged in the first groove;
the outer side wall of the metal plug is provided with a second groove;
the second temperature sensor is arranged in the second groove.
4. The thermal safety parameter measurement device of claim 2, wherein the sealing ring is made of red copper.
5. The thermal safety parameter measurement device according to claim 1, wherein a small hole is opened in a space side wall at the right end of the cartridge;
the pressure sensor is mounted in the aperture.
6. The thermal safety parameter measurement device of claim 1, wherein the right end of the metal plug is threadably connected to the heating chamber.
7. The thermal safety parameter measurement device of claim 1, further comprising a bracket for supporting the fiber optic probe.
8. The thermal safety parameter measurement device of claim 7, further comprising a base plate;
the heat preservation layer and the support are both supported on the top surface of the bottom plate.
9. The thermal safety parameter measurement device of claim 8, wherein the base plate is a wood plate.
10. The thermal safety parameter measurement device according to any one of claims 1 to 9, wherein the insulating layer is made of an aluminum silicate material;
the piston is made of red copper;
the shell and the metal plug are both made of 45# steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410123131.2A CN117647616A (en) | 2024-01-30 | 2024-01-30 | Thermal safety parameter measuring device for quick response of solid energetic material charge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410123131.2A CN117647616A (en) | 2024-01-30 | 2024-01-30 | Thermal safety parameter measuring device for quick response of solid energetic material charge |
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| CN117647616A true CN117647616A (en) | 2024-03-05 |
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| CN202410123131.2A Pending CN117647616A (en) | 2024-01-30 | 2024-01-30 | Thermal safety parameter measuring device for quick response of solid energetic material charge |
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