CN104267169A - Pressurizing device for measuring mechanical sensitiveness of explosives and powders - Google Patents
Pressurizing device for measuring mechanical sensitiveness of explosives and powders Download PDFInfo
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- CN104267169A CN104267169A CN201410477929.3A CN201410477929A CN104267169A CN 104267169 A CN104267169 A CN 104267169A CN 201410477929 A CN201410477929 A CN 201410477929A CN 104267169 A CN104267169 A CN 104267169A
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Abstract
The invention discloses a pressurizing device for measuring the mechanical sensitiveness of explosives and powders, aiming at solving the problems that the maximum pressure of the existing device to a sample is 605MPa and the friction sensitivity of the insensitive explosive is 0 under the pressure. The pressurizing device is composed of a reset cylinder, a driving hydraulic cylinder, a digital display pressure gauge, an energy accumulator, a speed regulating valve, a pressure adjusting valve, a reversing valve knob, a power supply switch, a reversing valve, an overflow valve, a motor, an oil pump, hydraulic oil, a filter screen, an oil filter, a liquid level, a thermometer, an oil discharge hole, a box body, a filter and an oil delivery pipe. When the device is used for measuring the sensitiveness of explosives and powders, and the device can pressurize the sample to reach 1200MPa.
Description
Technical field
The invention belongs to explosive wastewater security evaluation field, relate to a kind of explosive wastewater mechanical sensitivity measurement pressue device.
Background technology
The research of explosive wastewater friction sensitivity is an importance of explosive wastewater mechanical sensitivity research, current domestic explosive wastewater friction sensitivity is measured and is all adopted Ke Ziluofu friction pendulum, this friction pendulum is by instrument body, pressue device and pendulum composition, sample is placed between the steel column of diameter 10mm, after applying pressure, pendulum is accommodated from certain angle, upper steel column is hit by hitting bar, observe sample and whether burning or blast occur, wherein the pressurizing block diameter of pressue device is 110mm, during the work of Ke Ziluofu friction pendulum, sample pressure is 121 times of cylinder efficient pressure, order first two experiment condition: (1) pendulum pivot angle 90 °, cylinder efficient pressure 4MPa (steel column pressure 484MPa), dose 0.020 ± 0.001g, for measuring the friction sensitivity value of single chmical compound explosive and general composite explosives.(2) pendulum pivot angle 96 °, cylinder efficient pressure 5MPa (steel column pressure 605MPa), dose 0.030 ± 0.001g, for measuring low sensitivity or the powder friction sensitivity more than the large granular composite explosives of 1mm.
The explosive wastewater friction sensitivity measurement mechanism of current domestic use, oil press is pressurised into 5MPa, is pressurised into 605MPa to sample is maximum, causes a lot of type insensitiveness explosive wastewater under this test condition, does not react, cannot carry out friction sensitivity measurement.
Above-mentioned explosive wastewater friction sensitivity is measured the pressue device adopted and be there is following subject matter: (1) oil cylinder design pressurization scope is less, effective pressure is not more than 5MPa, cause the maximal value of sample pressure to be 605MPa, friction sensitivity measurement can not be carried out to desensitized explosive.(2) process of the test need repeatedly to pressurize, release, pressue device pressurization is slowly.(3) pressure of current explosive wastewater friction sensitivity measurement pressue device, adopts pointer pressure, Stress control poor repeatability.
Summary of the invention
In order to overcome deficiency and the defect of existing pressue device, the invention provides a kind of explosive wastewater mechanical sensitivity measurement pressue device, 1200MPa can be pressurized to sample, and pressure process pressure stability, pressurization, release repeatedly in process of the test, pressure remained steady, adopts digital pressure to read instrument, adopts this device can carry out friction sensitivity measurement to desensitized explosive.
Explosive wastewater mechanical sensitivity measurement pressue device provided by the invention, by restoring cylinder, initiatively hydraulic cylinder, digital display manometer, accumulator, flow speed control valve, pressure regulator valve, reversal valve knob, power switch, reversal valve, surplus valve, motor, oil pump, hydraulic oil, screen pack, oil filter, liquid level, thermometer, unloading port, casing, filtrator, petroleum pipeline forms, in described casing, reversal valve has two oil-outs and two oil return openings, reversal valve one oil-out is connected to accumulator oil-in by petroleum pipeline, accumulator oil-out is connected to digital display manometer oil-in by petroleum pipeline, digital display manometer oil-out is connected to initiatively hydraulic cylinder by petroleum pipeline, restoring cylinder oil-out is connected to reversal valve one oil return opening by petroleum pipeline, casing Lower Half You Liangge unloading port, in casing, Lower Half is fuel tank, and fuel tank is filtered net and is divided into two parts, and a part comprises the connecting pipe of the filtrator of oiling and pressure regulator valve, reversal valve, surplus valve oil-out, another part comprises oil filter and liquid level, thermometer, is hydraulic oil in fuel tank, the first half in casing, oil Pump and Electromotor is connected by transmission shaft, the oil-in of oil pump is connected with oil filter by petroleum pipeline, oil filter is below hydraulic oil liquid level, the oil-out of oil pump is connected on surplus valve oil-in by petroleum pipeline, surplus valve has two oil-outs, one oil-out is connected on the oil-in of pressure regulator valve by petroleum pipeline, another oil-out is connected on the scavenge pipe of reversal valve oil return opening connection by petroleum pipeline, pressure regulator valve has two oil-outs, an oil-out is connected to flow speed control valve oil-in by petroleum pipeline, another oil-out is connected on the scavenge pipe of reversal valve oil return opening connection by petroleum pipeline, flow speed control valve has an oil-out, flow speed control valve oil-out is connected on an oiler of reversal valve by petroleum pipeline, the scavenge pipe that reversal valve oil return opening connects leads to fuel tank, the exposed port of this oil pipe is below hydraulic oil liquid level.
Beneficial effect of the present invention is embodied in the following aspects.
1) explosive wastewater mechanical sensitivity measurement pressue device of the present invention, oil cylinder working-pressure can reach 10Mpa, can apply the pressure of 1200MPa to sample.
2) adopt accumulator, potential energy is stored into pressure energy, again pressure energy is exported when cut-in operation.In the hydrostatic transmission operation of interval, short-term operation, adopt accumulator, the power of oil pump can be reduced, improve compression rate again, save power, reduce investment.
3) experimental pressure display adopts digital display manometer, is convenient to the accurate control realizing pressurization.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the structural drawing of explosive wastewater mechanical sensitivity measurement pressue device
Fig. 2 explosive wastewater mechanical sensitivity is measured and is used pressue device control panel
Embodiment
As shown in Figure 1, explosive wastewater mechanical sensitivity measurement pressue device is made up of restoring cylinder 1, initiatively hydraulic cylinder 2, digital display manometer 3, accumulator 4 and casing 18 etc., in described casing 18, reversal valve 9 has two oil-outs and two oil return openings, reversal valve 9 one oil-out is connected to accumulator 4 oil-in by petroleum pipeline 20, accumulator 4 oil-out is connected to digital display manometer 3 oil-in by petroleum pipeline 20, digital display manometer 3 oil-out is connected to initiatively hydraulic cylinder 2 by petroleum pipeline 20, and restoring cylinder 1 oil-out is connected to reversal valve 9 one oil return opening by petroleum pipeline 20, casing 18 Lower Half You Liangge unloading port 17, in casing 18, Lower Half is fuel tank, fuel tank is filtered net 14 and is divided into two parts, a part comprises the connecting pipe of the filtrator 19 of oiling and pressure regulator valve 6, reversal valve 9, surplus valve 10 oil-out, another part comprises oil filter 15 and liquid level, thermometer 16, is hydraulic oil 13 in fuel tank, the first half in casing 18, oil pump 12 is connected by transmission shaft with motor 11, the oil-in of oil pump 12 is connected with oil filter 15 by petroleum pipeline 20, oil filter 15 is below hydraulic oil 13 liquid level, the oil-out of oil pump 12 is connected on surplus valve 10 oil-in by petroleum pipeline 20, surplus valve 10 has two oil-outs, one oil-out is connected on the oil-in of pressure regulator valve 6 by petroleum pipeline 20, another oil-out is connected on the scavenge pipe of reversal valve 9 oil return opening connection by petroleum pipeline 20, pressure regulator valve 6 has two oil-outs, an oil-out is connected to flow speed control valve 5 oil-in by petroleum pipeline 20, another oil-out is connected on the scavenge pipe of reversal valve 9 oil return opening connection by petroleum pipeline 20, flow speed control valve 5 has an oil-out, flow speed control valve 5 oil-out is connected on an oiler of reversal valve 9 by petroleum pipeline 20, the scavenge pipe that reversal valve 9 oil return opening connects leads to fuel tank, the exposed port of this oil pipe is below hydraulic oil 13 liquid level.
It is below specific embodiment.
Embodiment 1:
See Fig. 2, explosive wastewater mechanical sensitivity measurement pressue device operation steps is as follows:
A) pressure regulator valve is rotated counterclockwise, to turn motionless; B) turn on the power switch, power light is lighted, and motor is started working, and oil pump starts fuel feeding, and solenoid directional control valve power supply is connected simultaneously; C) reversing switch is allocated to loading, starts to active hydraulic cylinder fuel feeding; D) rotate pressure regulator valve, pressure is adjusted to predetermined pressure; E) reversing switch can be allocated to the position of stopping and carry out pressurize, motor works on but power consumption is very little; If now powered-down also directly can realize pressurize; F) hammering experiment is carried out; G) pressure is turned down; H) commutation unloading.
Embodiment 2:
Adopt this device, carry out friction sensitivity test to TATB explosive, to sample pressurization 800Mpa ~ 1200Mpa, experimental result is in table 1.
Table 1 TATB friction sensitivity test findings
| Sequence number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Sample pressurized/MPa | 800 | 950 | 1000 | 1050 | 1100 | 1150 | 1200 | 1150 | 1150 | 1150 |
| Reaction | ? | ? | ? | ? | ? | ? | √ | ? | ? | ? |
| Unreacted | √ | √ | √ | √ | √ | √ | ? | √ | √ | √ |
Claims (6)
1. an explosive wastewater mechanical sensitivity measurement pressue device, by restoring cylinder (1), initiatively hydraulic cylinder (2), digital display manometer (3), accumulator (4), flow speed control valve (5), pressure regulator valve (6), reversal valve knob (7), power switch (8), reversal valve (9), surplus valve (10), motor (11), oil pump (12), hydraulic oil (13), screen pack (14), oil filter (15), liquid level, thermometer (16), unloading port (17), casing (18), filtrator (19), petroleum pipeline composition (20).Described reversal valve (9) has two oil-outs and two oil return openings, wherein an oil-out is connected to accumulator (4) oil-in by petroleum pipeline (20), accumulator (4) oil-out is connected to digital display manometer (3) oil-in by petroleum pipeline (20), digital display manometer (3) oil-out is connected to initiatively hydraulic cylinder (2) by petroleum pipeline (20), and restoring cylinder (1) oil-out is connected to reversal valve (9) oil return opening by petroleum pipeline (20), casing (18) Lower Half You Liangge unloading port (17), casing (18) interior Lower Half is fuel tank, fuel tank is filtered net (14) and is divided into two parts, a part comprises the connecting pipe of the filtrator (19) of oiling and pressure regulator valve (6), reversal valve (9), surplus valve (10) oil-out, another part comprises oil filter (15) and liquid level, thermometer (16), is hydraulic oil (13) in fuel tank, casing (18) the interior first half, oil pump (12) is connected by transmission shaft with motor (11), the oil-in of oil pump (12) is connected with oil filter (15) by petroleum pipeline (20), oil filter (15) is below hydraulic oil (13) liquid level, the oil-out of oil pump (12) is connected on surplus valve (10) oil-in by petroleum pipeline (20), surplus valve (10) has two oil-outs, one oil-out is connected on the oil-in of pressure regulator valve (6) by petroleum pipeline (20), another oil-out is connected on the scavenge pipe of reversal valve (9) oil return opening connection by petroleum pipeline (20), pressure regulator valve (6) has two oil-outs, an oil-out is connected to flow speed control valve (5) oil-in by petroleum pipeline (20), another oil-out is connected on the scavenge pipe of reversal valve (9) oil return opening connection by petroleum pipeline (20), flow speed control valve (5) has an oil-out, flow speed control valve (5) oil-out is connected on an oiler of reversal valve (9) by petroleum pipeline (20), the scavenge pipe that reversal valve (9) oil return opening connects leads to fuel tank, the exposed port of this oil pipe is below hydraulic oil (13) liquid level.
2. explosive wastewater mechanical sensitivity measurement pressue device according to claim 1, is characterized in that, described hydraulic oil (13) is No. 46 antiwear hydraulic oils.
3. explosive wastewater mechanical sensitivity measurement pressue device according to claim 1, it is characterized in that, the material that casing (18) adopts is 1Cr18Ni9Ti.
4. explosive wastewater mechanical sensitivity measurement pressue device according to claim 1, it is characterized in that, all petroleum pipeline (20) oil return openings are all arranged on below fuel tank liquid level, and make the oil return mouth of pipe be that oblique section is to reduce vortex or the beating action of oil stream, ensure that petroleum pipeline (20) seals completely, and there is less resistance.
5. explosive wastewater mechanical sensitivity measurement pressue device according to claim 1, it is characterized in that, gear-type pump selected by oil pump (12), and serviceability temperature scope is 20 DEG C ~ 70 DEG C.
6. explosive wastewater mechanical sensitivity measurement pressue device according to claim 1, is characterized in that, oil filter (15) adopts tubular type to connect, and adopts copper mesh to filter.
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| CN201410477929.3A CN104267169B (en) | 2014-09-18 | 2014-09-18 | A kind of explosive wastewater mechanical sensitivity measurement pressue device |
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| CN201410477929.3A CN104267169B (en) | 2014-09-18 | 2014-09-18 | A kind of explosive wastewater mechanical sensitivity measurement pressue device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9594012B1 (en) * | 2015-04-23 | 2017-03-14 | The United States Of America As Represented By The Secretary Of The Navy | Sliding friction tester for explosive material |
| CN109669020A (en) * | 2019-01-15 | 2019-04-23 | 中国工程物理研究院化工材料研究所 | A kind of the friction velocity control device and its control method of friction sensitivity test |
| RU2771043C1 (en) * | 2021-04-12 | 2022-04-25 | федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" | Method for determining sensitivity to mechanical effects of high-energy substances |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9594012B1 (en) * | 2015-04-23 | 2017-03-14 | The United States Of America As Represented By The Secretary Of The Navy | Sliding friction tester for explosive material |
| CN109669020A (en) * | 2019-01-15 | 2019-04-23 | 中国工程物理研究院化工材料研究所 | A kind of the friction velocity control device and its control method of friction sensitivity test |
| CN109669020B (en) * | 2019-01-15 | 2021-04-02 | 中国工程物理研究院化工材料研究所 | Friction speed control device for friction sensitivity test and control method thereof |
| RU2771043C1 (en) * | 2021-04-12 | 2022-04-25 | федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" | Method for determining sensitivity to mechanical effects of high-energy substances |
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Granted publication date: 20151028 Termination date: 20170918 |