CN205138939U - Gaseous specific volume tester of medicament - Google Patents
Gaseous specific volume tester of medicament Download PDFInfo
- Publication number
- CN205138939U CN205138939U CN201520912319.1U CN201520912319U CN205138939U CN 205138939 U CN205138939 U CN 205138939U CN 201520912319 U CN201520912319 U CN 201520912319U CN 205138939 U CN205138939 U CN 205138939U
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- China
- Prior art keywords
- medicament
- oxygen bomb
- value
- specific volume
- gas
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Abstract
The utility model provides a gaseous specific volume tester of medicament, host computer container and oxygen bomb intercommunication, it is surveyed the medicament to hold in the oxygen bomb, the vacuum pump utilizes after with host computer container and oxygen bomb evacuation the vacuum meter to measure vacuum, ignition unit is ignited or ignites surveying the medicament, digital pressure gauge and temperature sensor measurement gas pressure value and the temperature value be connected with the host computer container, and transmit gas pressure value and temperature value to data the control unit, host computer container and oxygen bomb, the vacuum meter, connect through the solenoid valve respectively between the vacuum pump, opening of the control unit control vacuum pump stops, opening of ignition unit is stopped and the switch of solenoid valve, the data processing unit is according to gas pressure value, temperature value and calculated the gaseous specific volume value that obtains being surveyed the medicament by the quality of survey medicament. The utility model discloses the gaseous specific volume value measuring degree of accuracy of the less medicament of gas production and precision can be improved, human error is reduced.
Description
Technical field
The present invention relates to a kind of tester firing rear gas specific volume for detecting the gas producing medicinal such as priming system medicament, explosive pyrotechnics.
Background technology
The assay method of medicament gas specific volume has U-tube mercury manometr method, pressure vacuum gauge (bourdon tube) manometry, vacuum manometer manometry and pressure transducer method.U-tube mercury manometr method, pressure vacuum gauge (bourdon tube) manometry and vacuum manometer manometry due to operate complicated, accuracy is lower is progressively eliminated.
At present, most domestic relevant unit all uses pressure transducer method to measure the gas specific volume value of medicament.The gas specific volume tester pressure measurement precision of Hebi, Henan instrucment and meter plant development and production is lower, is only 0.5% (F.S); Measure the control of gas unit and be operating as manually (glass piston); Volume (except computing machine and printer) is huger; There is no igniting unit etc.The medicament gas specific volume tester that modern age, chemistry institute was researched and developed based on pressure transducer method fires the mensuration of the gas specific volume value of the medicaments such as the larger propellant powder of rear gas production rate, propellant mainly for test, for reducing compared with atmospheric pressure the manometric impact of numeral, amount gas snubber assembly volume design in equipment is larger, therefore larger experimental error will be produced when the medicament that measurement gas production rate is less, cause the reappearance of data poor, in industry uses, there is certain limitation.This equipment dosage is also comparatively large, and the security protection in test operation requires higher.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of medicament gas specific volume tester, accuracy and the precision of the measurement of gas production rate less medicament gas specific volume value can be improved, reduce personal error.
The technical solution adopted for the present invention to solve the technical problems is: comprise host container, digital pressure gauge, temperature sensor, vacuum meter, oxygen bomb, vacuum pump, solenoid valve, igniting unit, control module and data processing unit.
Described host container is airtight cavity, be communicated with oxygen bomb, crucible is placed in described oxygen bomb, for holding tested medicament, described vacuum pump utilizes vacuum meter measurement of vacuum after host container and oxygen bomb being vacuumized, described igniting unit ignites to tested medicament or ignites, the digital pressure gauge be connected with host container and temperature sensor measurement gas pressure value and temperature value, and gas pressure value and temperature value are transferred to DCU data control unit, described host container is connected respectively by solenoid valve with between oxygen bomb, vacuum meter, vacuum pump; Described control module controls the switch of the start and stop of vacuum pump, the start and stop of igniting unit and solenoid valve; Described data processing unit obtains the gas specific volume value of tested medicament according to the Mass Calculation of gas pressure value, temperature value and tested medicament.
The measurement range of described digital pressure gauge is 0 ~ 250kPa; Measuring accuracy is 0.05%; Described solenoid valve is stainless steel, and leak rate is 6.71 × 0-5PaL/S; Described host container is glass material, spherical structure, and volume is 200 ~ 300ml.
The invention has the beneficial effects as follows:
1, improve accuracy and the precision of medicament gas specific volume mensuration:
(1) instrument of precision digital pressure gauge as accurate pressure measurement that pressure measurement precision is 0.05% (F.S) is matched;
(2) apolegamy leak rate is selected to be that the pneumatic type baffle plate solenoid valve of 6.7 × 10-5Pa.L/S improves system leakproofness;
(3) improve the leak rate of oxygen bomb, when needle valve is closed, ensure that 30min is without leakage (in water bubble-free), when needle valve turns on 1/4 circle, 5min is without leakage;
(4) select volume to be the glass container of 200 ~ 300ml, improve the accuracy that the less medicament bulking value of gas production rate is measured.Selection for pipeline high vacuum proofed sleeve and polypropylene tube, junction adds RUBBER O type packing ring and scribbles high vacuum seal fat, tightens with nylon cable tie, fixes;
(5) when tested gas charge gas unit, data acquisition program starts, and acquisition time is 5min, and frequency acquisition can reach 140/min, and pressure is the average of 3 adjacent maxima in 5min after inflation;
(6) inserting measuring accuracy in a reservoir be that the temperature sensor probe of ± 0.5 DEG C is used for the temperature of measurement gas, after amplifying and A/D changes, is directly presented on digital pressure gauge panel;
(7) can design and program function software, from data sampling and processing, calculate the operating process such as data query and result printing and all realize sequencing and robotization, reduce or eliminate the error that manual operation is brought into, thus improve the accuracy of measuring.
2, utilize this medicament gas specific volume tester according to " GJB5891.30-2006 " test, result is as follows:
(1) precision: the extreme difference of standard agent gas specific volume test average result should not be greater than 6ml/g.Result: selection standard gunpowder 60 square piece 10.5, tests 3 times, wherein 2 extreme difference 0.81ml/g; CMC-PbN6 (06-03-4 criticizes) test 2 times, extreme difference 0.82ml/g; Black powder HY-3 (04-4 criticizes) test 2 times, extreme difference is 1.73ml/g.
(2) gas unit leakproofness is measured: when pressure is not more than 0.15kPa in amount gas unit, keep 5min pressure variety 0.12kPa should not be greater than.Assay meets the requirements, and for details see attached table 1.
(3) gas unit resistance to pressure is measured: when the pressure in amount gas unit is about 240kPa, keep 5min, pressure variety should not be greater than 0.20kPa.Result meets technical requirement, refers to table 1.
Gas unit performance measured by table 1
Accompanying drawing explanation
Fig. 1 is formation schematic diagram of the present invention;
Fig. 2 amount of being gas System's composition schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described, the present invention includes but be not limited only to following embodiment.
Complete machine of the present invention is made up of parts such as main frame, oxygen bomb, vacuum pump, compressor, computing machine, printers; Can the amount of being divided into gas unit, igniting unit, control module and data processing unit.
Amount gas unit:
Be made up of digital pressure gauge, vacuum meter, oxygen bomb, vacuum pump, compressor, solenoid valve, pipeline.In test process, medicament is placed in the crucible of oxygen bomb, priming supply is utilized to ignite to medicament or ignite after vacuumizing oxygen bomb, the gas slowly after system being vacuumized at ambient temperature, medicament in oxygen bomb being fired rear generation puts into the container of main frame, utilizes the digital pressure gauge and temperature sensor measurement gas pressure value and temperature value that are connected with container.Its concrete technical indicator is as follows:
(1) digital pressure gauge: measurement range: 0kPa ~ 250kPa (absolute pressure); Measuring accuracy: 0.05% (F.S);
(2) solenoid valve: leak rate: 6.71 × 0-5PaL/S; Material: valve body is stainless steel; Supply voltage: AC220V ± 10%; Zero voltage starting.
(3) container: material is glass, shape is spherical, and volume is 200 ~ 300ml;
(4) vacuum meter: 1.0 grades, 0MPa ~-0.1MPa;
(5) vacuum pump: end vacuum 6.7 × 10-2Pa, speed of evacuation 2L/s;
(6) oxygen bomb: volume 300ml, water pressure resistance 20MPa;
(7) compressor: 0.6MPa; Voltage: AC220 × (1 ± 10%) V50Hz.
2, igniting unit
For the medicament ignited or ignite in oxygen bomb, its technical indicator is as follows:
Supply voltage: AC220 ± 10%;
Ignition voltage: DC0V ~ 48V continuously adjustabe;
Initial firing current: DC0A ~ 6A;
The duration of ignition: 0s ~ 60s continuously adjustabe;
Peak power output: 250W.
3, control module
Control complete machine power switch, the starting or stoping of vacuum pump, the starting or stoping and the Kai Heguan of vacuum solenoid of firing system.
4, data processing unit
Computing machine is connected with main frame by the RS232 data-interface of digital pressure gauge, in whole operating process, computer operation software gathers the output signal (synchronous with digital pressure gauge displayed value) of digital pressure gauge by com interface, according to the quality of the temperature of gas at that time, pressure and medicament, obtained the gas specific volume value of medicament by the computing formula of gas specific volume.
The invention solves following problem:
1, select more high-precision pressure gauge as the instrument of accurate pressure measurement;
2, match leak rate lower solenoid valve, the leak rate reducing oxygen bomb, the leak rate that reduces glass container and connecting pipe improve the leakproofness of whole system;
3, match the less container of volume as buffer container, improve the accuracy that the less medicament gas specific volume of gas production rate measures;
4, the image data system of efficiently and accurately is designed, the data in collection section effective time of accurate high frequency;
5, select temperature sensors of high precision to carry out temperature survey to tested gas, can directly signal is presented on digital pressure gauge panel after amplification, A/D conversion;
6, can expand and carry out the function software that designs and program, from data sampling and processing, calculate the operating process such as data query and result printing and all realize sequencing and robotization, reduce or eliminate the error that manual operation is brought into, thus improve the accuracy of measuring.
Comprise the following steps when the present invention uses:
1, oxygen bomb and amount gas system volume are demarcated, then the volumetric values recorded is inputted the V of gas specific volume tester program interface " setting parameter "
0in value frame.
2, the installation of gas specific volume tester program
Instrument port is connected with computing machine com interface, computer CD ROM is put in mounting disc, open, double-click " setup " icon, will the installation of program be completed according to program prompting.
3, test operation step:
3.1 connect instrument power source, make whole instrument preheating 30min;
3.2 take sample, are accurate to 0.0002g, input in the sample parameter hurdle of gas specific volume tester program interface by the quality of sample and other information;
Oxygen bomb bullet is placed on bullet support by 3.3, crucible is put into pedestal lower end ring, gets on the electrode of ignition wire access bullet of one section of known quality, and does not contact with crucible;
Sample adds in crucible by 3.4, makes it to contact well with ignition wire, then bullet is put into bullet cup, screws bullet lid;
Oxygen bomb connects with amount gas system by 3.5, presses " startup " button on host panel, starts vacuum pump, when digital pressure gauge display oxygen bomb internal gas pressure is less than 0.15kPa, tightens oxygen bomb needle valve, closes vacuum pump;
Oxygen bomb is connected with firing circuit wire by 3.6, " voltage-regulation " knob on rotary apparatus panel, and point of adjustment ignition voltage, then presses " igniting " button, igniting;
3.7 oxygen bomb is placed in chilled water or room temperature under cool;
After 3.8 about 30min, by oxygen bomb access amount gas system, by "start" button, open vacuum pump, when being less than 0.15kPa to digital pressure gauge displayed value, closing vacuum meter valve, vacuum pump valve successively, then press " stopping " button, close vacuum pump;
" collection " button of 3.9 click program interfaces, program starts acquisition test data, then turns on oxygen bomb needle valve, makes the host container of gas inlet gas system, and program automatically will be measured and calculated the bulking value of gas;
After 3.10 program interfaces display " data acquisition is complete ", open vacuum pump valve, by "start" button, the waste gas in oxygen bomb taken away by startup vacuum pump;
3.11 unload oxygen bomb, open vacuum meter valve, rotate " voltage-regulation " switch, make ignition voltage be 0V, close instrument power source;
3.12 turn on oxygen bomb, take out bullet, clean each parts, airing or dry for subsequent use.
Claims (2)
1. a medicament gas specific volume tester, comprise host container, digital pressure gauge, temperature sensor, vacuum meter, oxygen bomb, vacuum pump, solenoid valve, igniting unit, control module and data processing unit, it is characterized in that: described host container is airtight cavity, be communicated with oxygen bomb, crucible is placed in described oxygen bomb, for holding tested medicament, described vacuum pump utilizes vacuum meter measurement of vacuum after host container and oxygen bomb being vacuumized, described igniting unit ignites to tested medicament or ignites, the digital pressure gauge be connected with host container and temperature sensor measurement gas pressure value and temperature value, and gas pressure value and temperature value are transferred to DCU data control unit, described host container and oxygen bomb, vacuum meter, connect respectively by solenoid valve between vacuum pump, described control module controls the switch of the start and stop of vacuum pump, the start and stop of igniting unit and solenoid valve, described data processing unit obtains the gas specific volume value of tested medicament according to the Mass Calculation of gas pressure value, temperature value and tested medicament.
2. medicament gas specific volume tester according to claim 1, is characterized in that: the measurement range of described digital pressure gauge is 0 ~ 250kPa; Measuring accuracy is 0.05%; Described solenoid valve is stainless steel, and leak rate is 6.71 × 0-5PaL/S; Described host container is glass material, spherical structure, and volume is 200 ~ 300ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912319.1U CN205138939U (en) | 2015-11-16 | 2015-11-16 | Gaseous specific volume tester of medicament |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912319.1U CN205138939U (en) | 2015-11-16 | 2015-11-16 | Gaseous specific volume tester of medicament |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205138939U true CN205138939U (en) | 2016-04-06 |
Family
ID=55624721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520912319.1U Expired - Fee Related CN205138939U (en) | 2015-11-16 | 2015-11-16 | Gaseous specific volume tester of medicament |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205138939U (en) |
-
2015
- 2015-11-16 CN CN201520912319.1U patent/CN205138939U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20161116 |