CN105277670B - Gunpowder specific volume measuring instrument - Google Patents
Gunpowder specific volume measuring instrument Download PDFInfo
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- CN105277670B CN105277670B CN201510661404.XA CN201510661404A CN105277670B CN 105277670 B CN105277670 B CN 105277670B CN 201510661404 A CN201510661404 A CN 201510661404A CN 105277670 B CN105277670 B CN 105277670B
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- gas tank
- gunpowder
- specific volume
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Abstract
The invention discloses a gunpowder specific volume measuring instrument in order to solve the problems that corrosion leakage easily happens and test object kinds are less in the prior art. The gunpowder specific volume measuring instrument is composed of an oxygen bomb, a vacuum pump, a gas tank, a temperature sensor, a pressure sensor and a data collector. The oxygen bomb is a container for gunpowder combustion, the vacuum pump is used to vacuumize the oxygen bomb and the apparatus, the gas tank is used to store gunpowder combustion gas, the pressure sensor is used to measure the combustion gas pressure, the temperature sensor is used to measure the combustion gas temperature, and the data collector is used to acquire data, process data and output a measure result. The designed gas tank selects an anticorrosion material for processing, can be rapidly dismounted, installed and cleaned, and solves the corrosion leakage problem of the gunpowder specific volume measuring instrument. The gas tank volume can be changed by replacing a gas tank body with different length, and thus the system volume of the gunpowder specific volume measuring instrument is changed, and the problem that the gunpowder specific volume measuring instrument is less in test object kind is solved.
Description
Technical field
The invention belongs to explosive wastewater technical field, relates generally to a kind of gunpowder specific volume measuring instrument.
Background technology
Gunpowder specific volume is one of important parameter of measurement gunpowder acting capacity of water.Gunpowder specific volume generally uses specific volume measuring instrument
Measure, the e measurement technology at home and abroad has become the important reality of the energy characteristicses such as propellant powder, propellant, priming system sign
One of proved recipe method, plays irreplaceable effect, in gun in terms of propellant powder and propellant basic property research
The design of trajectory, powder charge design and propellant motor charge provides a large amount of reliable basic datas, is also that many models are military
One of important indicator of device basic research and examination.
Scientific research institutions of China, propellant powder factory and each services, the specific volume measuring instrument for operating has following two shortcomings：
One is that the specific volume measuring instrument for commonly using at present after long-term use all can the gas leakage because of the corrosion of gas tank.These gas tanks are divided into
Solder design formula and screw assembled, solder design formula is primarily referred to as cuboid gas tank or the employing being welded into using sheet metal
Seamless steel pipe adds the cylinder gas tank that circular steel plate is welded into, the easily gas leakage because of the corrosion at solder design of this gas tank.Spiral shell
The cylinder gas tank that nail assembled is mainly the rubber ring on multiple screw in compression end caps to seal, this gas tank does not have weld seam institute
It is preferable with corrosion resistance, but two end caps of this gas tank need at least five long bolts and ten nuts close to compress rubber ring
Envelope, installs, dismantles and cleans all pretty troublesome, and single nut is too tight or too loose all to cause gas tank gas leakage.Both gas tanks all can
System volume is caused to change because of the corrosiveness of nitrogen oxides, inorganic salt and moisture content long term accumulation in combustion gas, Jin Erying
The precision of specific volume test is rung, they are all without the corrosion air-leakage for fundamentally solving the problems, such as gas tank.
Two is that system volume is immutable causes testable gunpowder species less.The accuracy of specific volume test result mainly takes
Certainly in pressure transducer and the measuring accuracy of temperature sensor.The measuring accuracy and range of sensor is contradiction, and sensor exists
Linearity difference during narrow pressure limit build-in test is less, and transducer range is narrower, and measuring accuracy is higher, and sensor is in wide pressure
Linearity difference during power scope build-in test is larger, and transducer range is wider, and measuring accuracy is lower.The test of gunpowder specific volume is used
Pressure Sensor Precision it is higher, so its range is just narrow, system volume is accordingly little when test dose is few, tests medicine
System volume is accordingly big when measuring many, and such gaseous-pressure fluctuates all the time in a less scope, could ensure test
While precision, pressure transducer is protected not damage because outranging test, specific volume test result also can be more accurate.National military standard pair
Loading Materials for Initiating Explosive Devices, propellant, the specific volume of propellant powder test dose, and there are strict requirements, it is impossible to arbitrarily adds and subtracts dose.Loading Materials for Initiating Explosive Devices is mostly
Priming, the shock wave that COMBUSTION TO DETONATION TRANSITION is produced can produce strong percussion to oxygen bomb, and oxygen is easily damaged when dose is too big
Bullet, therefore, the gunpowder specific volume measuring instrument test dose for testing Loading Materials for Initiating Explosive Devices is generally 1g~2g, system volume be generally 1L~
2L.Containing metal dust propellant, ablation of the dose too greatly to oxygen bomb is very serious, so the gunpowder specific volume of test propellant is surveyed more
Amount instrument test dose is generally 3g~4g, and system volume is generally 2L~3L.The gunpowder specific volume measuring instrument test of test propellant powder
Dose is generally 5g~6g, and system volume is generally 3L~4L.Because the system volume of specific volume measuring instrument can not quickly be changed, fire
The test object of medicine specific volume measuring instrument is less.Three of the above gunpowder specific volume measuring instrument test pressure fluctuation range be -1Bar~
1Bar (pressure transducer range -1Bar~4Bar), the gunpowder species that every gunpowder specific volume measuring instrument can be tested is all very limited.
The content of the invention
The technical problem to be solved is to develop a kind of gunpowder specific volume measuring instrument, solves prior art corrosion leakage
The immutable problem of gas, volume.
In order to solve above-mentioned technical problem, a kind of easy accessibility of present invention design, without other instruments, with handss
The corrosion-resistant gas tank of attaching/detaching or fit sealing, can at any time clean gas tank periodically or as needed prevents corrosion and hydrops；Adopt
With the blind nut of corrosion resistant chromium Ni-Mo alloy steel materials processing gas tank, end cap, gas tank body and ferrule fitting, using annular rubber
Rubber sealing；Four internal-and external diameters of Design and Machining are identical with two ends thread size, but the different gas tank body of length, and four long
The gas tank body of degree can be exchanged, and can be matched with end cap and jam nut, need to only change the gas tank body of correspondence length, you can fast
Speed changes the volume of gas tank, and then changes the system volume of specific volume measuring instrument；Install, dismantle and fasten for ease of singlehanded, while
It is in order to ensure that pressure transducer, temperature sensor and ferrule fitting are mountable on the end cap of gas tank and internal with gas tank sheet
Portion is connected, and the inside diameter ranges for designing gas tank body are 55mm~65mm, and external diametrical extent is 65mm~75mm, and external diameter is bigger than internal diameter
10mm, wall thickness is 5mm, in order to realize the utilization to waste and old oxygen bomb accessory (blind nut, inner washer and outer washer), present invention design
Gas tank body internal diameter, external diameter, two ends external screw thread are identical with the structure of oxygen bomb body；The gas tank body volume phase of two neighboring length
Difference 1L, the volume of four gas tank bodies is respectively：1L, 2L, 3L, 4L, length l of gas tank body can be by formula l=V/ π d2Calculate
Draw, V is the volume of gas tank body, r is the internal diameter of gas tank body；Using the gas tank sheet of 1L or 2L volumes during test priming
Body, using the gas tank body of 2L or 3L volumes during test propellant, using the gas tank body of 3L or 4L volumes during test propellant powder.
The present invention provide gunpowder specific volume measuring instrument, by oxygen bomb, vacuum pump, gas tank, pressure transducer, temperature sensor and
Data acquisition unit is constituted；The oxygen bomb is the container of powder burning, and vacuum pump is used for oxygen bomb and device evacuation, and gas tank is used for
Storage powder gas, pressure transducer is used to test gaseous-pressure, and temperature sensor is used to test fuel gas temperature, data acquisition unit
For gathered data, processing data and output test result；The oxygen bomb vacuum pump evacuation of gunpowder is will be equipped with, by oxygen after igniting
Bullet is immersed in the water and cools, and with vacuum pump to the device other parts evacuation in addition to oxygen bomb, connection oxygen bomb is to test device
On, gather the numerical value installed in the pressure transducer of gas tank one end and the temperature sensor of the other end, data with data acquisition unit
The gunpowder specific volume test software installed on harvester calculates gunpowder bulking value, the gunpowder specific volume measuring instrument of the present invention according to reading
The bulking value including priming, propellant powder and propellant can be tested.
The gas tank is symmetrical, and centre is gas tank body, and two ends are respectively blind nut, end cap, inner washer, outer washer, card
Bell and spigot joint；Blind nut is loop configuration, and small-bore one end compresses end cap, and heavy caliber one end is provided with female thread to connect gas tank body；
End cap is cylindrical structural, is provided with two screwed holes, a connecting sleeve joint, another connection temperature sensor or pressure biography
Sensor, gas tank body is tubular structure, and two ends are provided with the external screw thread matched with blind nut；Inner washer is the rubber of cirque structure
Circle, in the groove on end cap sidewalls, plays main seal effect；Outer washer is the rubber ring of cirque structure, is arranged on
In groove on endcap bosses step, play auxiliary seal effect；Ferrule fitting one end is provided with external screw thread to connect end cap, the other end
External screw thread is provided with attachment means pipeline.
Gas tank body can be designed to four bodies that internal diameter is identical but length is different, the gas tank body volume of adjacent lengths
Difference 1L, this design need to only change the gas tank body of different length, you can obtain corresponding gas tank volume, save plus carefully and neatly done
The material and expense of set gas tank, decreases the operating procedure for changing gas tank volume.
Gas tank body external diameter can be consistent with oxygen bomb, and blind nut, inner washer, the outer washer of the present invention are all the accessories of oxygen bomb,
Material and processing charges can be saved to the recycling of waste and old oxygen bomb accessory.
Advantages of the present invention：The gas tank of the present invention is processed using NI-CR-MO alloys steel matter, is installed, is dismantled and easy to clean
Fast, corrosion and the leakage problem of other gunpowder specific volume measuring instruments are solved；The present invention can be by changing different length gas tank
The method of body quickly changes the system volume of gunpowder specific volume measuring instrument, testable gunpowder kind analogy other gunpowder specific volumes measurements
Instrument is more；The present invention can reduce the processing quantity of part, save rapidoprint and processing charges.
Description of the drawings
The each part annexation figure of Fig. 1 present invention
The each parts connection diagram of Fig. 2 gas tanks
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention is described in further detail.
The present invention is implemented with reference to Fig. 1, Fig. 2.The present invention is passed by oxygen bomb 1, vacuum pump 2, gas tank 3, pressure transducer 4, temperature
Sensor 5 and data acquisition unit 6 are constituted；The oxygen bomb 1 is the container of powder burning, and vacuum pump 2 is used to take out very oxygen bomb 1 and device
Sky, gas tank 3 is used to store powder gas, and pressure transducer 4 is used to test gaseous-pressure, and temperature sensor 5 is used to test combustion gas
Temperature, data acquisition unit 6 is used for gathered data, processing data and outputs test result；Will be equipped with the oxygen bomb vacuum pump 2 of gunpowder
Evacuation, oxygen bomb 1 is immersed in the water cool after igniting, is taken out very with 2 pairs of device other parts in addition to oxygen bomb 1 of vacuum pump
Sky, connection oxygen bomb 1 in test device, with the collection of data acquisition unit 6 installed in the pressure transducer 4 of the one end of gas tank 3 and another
The numerical value of the temperature sensor 5 at end, the gunpowder specific volume test software installed on data acquisition unit 6 calculates gunpowder ratio according to reading
Capacitance, the gunpowder specific volume measuring instrument of the present invention can test the bulking value including priming, propellant powder and propellant.
The gas tank 3 is padded outward by two blind nut 3-1, two end cap 3-2, gas tank body 3-3, two inner washer 3-4, two
Circle 3-5, two ferrule fitting 3-6 compositions；Blind nut 3-1 is loop configuration, and small-bore one end compresses end cap 3-2, heavy caliber one end
It is provided with female thread to connect gas tank body 3-3；End cap 3-2 is cylindrical structural, and end cap 3-2 is provided with two screwed holes, a company
Ferrule fitting 3-6, another connection temperature sensor 4 or pressure transducer 5 are connect, gas tank body 3-3 is tubular structure, and two ends are opened
There is the external screw thread matched with blind nut 3-1, be designed with four gas tank body 3-3 that internal diameter is identical but length is different, two neighboring length
The gas tank body 3-3 volumes difference 1L of degree, changing the gas tank body 3-3 of different length can change the volume of gas tank 3；Inner washer
3-4 is the rubber ring of cirque structure, in the groove on the wall of end cap 3-2 sides, plays main seal effect；Outer washer 3-5
For the rubber ring of cirque structure, in the groove on end cap 3-2 protrusion steps, play auxiliary seal effect；Ferrule fitting
3-6 one end is provided with external screw thread to connect end cap 3-2, and the other end is provided with external screw thread with attachment means pipeline.
1st, the assembling of gunpowder specific volume measuring instrument：
Gas tank 3 is installed first, is wound on two ferrule fitting 3-6, pressure transducer 4, the external screw thread of temperature sensor 5
Unsintered tape, is installed on end cap 3-2 in corresponding screwed hole and tightens, and two inner washer 3-4, two outer washer 3-5 are respectively mounted
To in the corresponding groove of two end cap 3-2, two end cap 3-2 is installed on gas tank body 3-3, blind nut 3-1 is installed to into gas tank sheet
On body 3-3 and tighten, such as Fig. 2. it is shown.Then measuring instrument is assembled, oxygen bomb 1 and vacuum pump 2 is connected respectively with the pipeline with valve
It is connected on the ferrule fitting 3-6 of the left side end cap 3-2 of gas tank 3, the pipeline with valve is installed to into the card of the right end cap 3-2 of gas tank 3
On bell and spigot joint 3-6, pressure transducer 4, temperature sensor 5 are connected on data acquisition unit 6, such as Fig. 1. it is shown.
2nd, gunpowder specific volume test philosophy：
In normal conditions after the powder burning of (101.325KPa, 273.15K) unit mass shared by gaseous products
Volume (water is gaseous state) is referred to as gunpowder specific volume, with V1Represent, unit is mL/g, and gunpowder specific volume computing formula is as follows：
Gunpowder sample bulking value V1(ml/g), thermodynamic temperature T0(273.15K), normal atmospheric pressure P0
(0.101325MPa), gaseous-pressure Pt(MPa), system volume Vt(mL), fuel gas temperature t (DEG C), quality m (g) of gunpowder sample.
System volume Vt(mL) include the volume of oxygen bomb 1, pipe volume and the volume of gas tank 3, can be demarcated by liquid respectively
Method is measured, and three's sum is the system volume V of gunpowder specific volume measuring instrumentt.Gaseous-pressure PtAnd fuel gas temperature t (DEG C) can (MPa)
Obtained with the data that pressure transducer 4 and temperature sensor 5 are gathered by data acquisition unit 6.Quality m (g) of gunpowder sample is led to
Cross high accuracy number balance to measure.According to specific volume computing formula, in the case of calibration system volume, it is only necessary to know that gunpowder sample
Quality m (g) of product, gaseous-pressure Pt(MPa) and by fuel gas temperature t (DEG C) gunpowder bulking value is calculated.
3rd, the bulking value of certain priming is tested：
From the gas tank body 3-3 of volume 2L, oxygen bomb 1 and pipe volume about 0.3L during test priming, system volume is about
2.3L, weighs 2.0000g primings.
(1) device for opening on and off switch, debugging apparatus enter state to be tested；
(2) data acquisition unit 6 is opened, puts medicine specific volume detection calibration software of opening fire, arrange parameter enters state to be collected；
(3) sample to be tested is loaded in oxygen bomb 1, tightens oxygen bomb 1；
(4) vacuum pump 2 is opened, oxygen bomb 1 is evacuated to into below 400Pa；
(5) oxygen bomb 1 is immersed in the water, and lights the sample in oxygen bomb 1, cools down 15min；
(6) take out oxygen bomb 1 and be connected to specific volume measuring instrument, be evacuated to below 400Pa；
(7) gas slowly in oxygen bomb 1 is imported in the gas tank 3 of specific volume measuring instrument, stands 5min；
(8) gunpowder specific volume test software is clicked on, gathers the data that pressure transducer 4 and temperature sensor 5 are measured, calculate this
The bulking value of test is sent out, is stored and is recorded；
(9) operate by (2) to (8), two test result deviations are valid data less than 6mL/g；
(10) finally export or print specific volume test result.
4th, the bulking value of certain propellant is tested：
From the gas tank body 3-3 of volume 4L, oxygen bomb 1 and pipe volume about 0.3L during test propellant powder, system volume is about
3.3L, weighs 4.0000g propellants.
The bulking value of certain propellant is measured by (1) to (10) operation.
5th, the bulking value of certain propellant powder is tested：
From the gas tank body 3-3 of volume 4L, oxygen bomb 1 and pipe volume about 0.3L during test propellant powder, system volume is about
4.3L, weighs 6.0000g propellants.
The bulking value of certain propellant powder is measured by (1) to (10) operation.
Table 1. lists the specific volume test result of three kinds of different gunpowder, and test result shows the gunpowder for using transfiguration gas tank 3
Specific volume measuring instrument can test the bulking value of various gunpowder.
Table 1. tests the specific volume value list of different gunpowder
Claims (2)
1. a kind of gunpowder specific volume measuring instrument, it is characterised in that by oxygen bomb (1), vacuum pump (2), gas tank (3), pressure transducer (4),
Temperature sensor (5) and data acquisition unit (6) are constituted；The oxygen bomb (1) is the container of powder burning, and vacuum pump (2) is for right
Oxygen bomb (1) and device evacuation, gas tank (3) is for storing powder gas, and pressure transducer (4) is warm for testing gaseous-pressure
, for testing fuel gas temperature, data acquisition unit (6) is for gathered data, processing data and outputs test result for degree sensor (5)；
The gas tank (3) is symmetrical, and centre is gas tank body (3-3), and two ends are respectively blind nut (3-1), end cap (3-2), inner washer
(3-4), outer washer (3-5), ferrule fitting (3-6)；Blind nut (3-1) is loop configuration, and small-bore one end compresses end cap (3-2),
Heavy caliber one end is provided with female thread to connect gas tank body (3-3)；End cap (3-2) is cylindrical structural, is provided with two screwed holes,
One connecting sleeve joint (3-6), another connects temperature sensor (4) or pressure transducer (5), and gas tank body (3-3) is
Tubular structure, two ends are provided with the external screw thread matched with blind nut (3-1)；Inner washer (3-4) is the rubber ring of cirque structure, installs
In groove on the wall of end cap (3-2) side, play main seal effect；Outer washer (3-5) is the rubber ring of cirque structure, installs
In groove on end cap (3-2) protrusion step, play auxiliary seal effect；Ferrule fitting (3-6) one end is provided with external screw thread with even
End cap (3-2) is connect, the other end is provided with external screw thread with attachment means pipeline；The gas tank body (3-3) has four, and internal-and external diameter is identical
But length is different, gas tank body (3-3) the volume difference 1L of adjacent lengths.
2. gunpowder specific volume measuring instrument according to claim 1, it is characterised in that the external diameter and spiral shell of the gas tank body (3-3)
Stricture of vagina is consistent with oxygen bomb (1).
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| CN201510661404.XA CN105277670B (en) | 2015-10-14 | 2015-10-14 | Gunpowder specific volume measuring instrument |
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| CN105277670B true CN105277670B (en) | 2017-05-17 |
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| CN107677520B (en) * | 2017-11-21 | 2023-10-20 | 中国石油大学(北京) | Natural gas sample collection device and collection method |
| CN111023918B (en) * | 2019-12-24 | 2022-02-25 | 中国人民解放军63856部队 | Gunpowder gas pressure test calibration method |
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| CN101126694B (en) * | 2007-09-30 | 2011-01-05 | 西北工业大学 | Propellant burning gas mole number test method and its device |
| CN104280311A (en) * | 2013-07-18 | 2015-01-14 | 湖北航天化学技术研究所 | Device and method for testing after-burnt gas yield of combustible material |
| CN103926371A (en) * | 2014-04-30 | 2014-07-16 | 西北工业大学 | Device and method for testing gas generation rate of solid combustible |
| CN104330520B (en) * | 2014-10-30 | 2016-04-27 | 西北工业大学 | A kind of proving installation of solid propellant constant volume combustion and method of testing |
| CN104374865B (en) * | 2014-11-14 | 2016-02-03 | 西北工业大学 | A kind of proving installation for solid propellant combustion rate and method of testing |
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