CN108895930B - Non-ideal explosive explosion work-doing capacity and power measuring device - Google Patents
Non-ideal explosive explosion work-doing capacity and power measuring device Download PDFInfo
- Publication number
- CN108895930B CN108895930B CN201810986180.3A CN201810986180A CN108895930B CN 108895930 B CN108895930 B CN 108895930B CN 201810986180 A CN201810986180 A CN 201810986180A CN 108895930 B CN108895930 B CN 108895930B
- Authority
- CN
- China
- Prior art keywords
- end cover
- explosion
- explosive
- cylindrical
- work
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B35/00—Testing or checking of ammunition
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a device for measuring the explosive work-doing capability and power of a non-ideal explosive. The design of a closed cavity is adopted, the measurement of all mechanical work done by the diffusion of non-ideal explosive detonation products is realized, the measurement of instantaneous work-doing power of explosive explosion is realized by recording the displacement parameter and the damping force parameter of a hydraulic damper, and the problems of pressure relief, incomplete work-doing measurement, incapability of measuring power and the like of the conventional open measuring device are solved.
Description
Technical Field
The invention belongs to the technical field of explosive performance evaluation of explosives and powders, and relates to a device for measuring work capacity and power of non-ideal explosive explosion.
Background
The nonideal explosive is a kind of explosive with large critical diameter and large detonation reaction zone width, the detonation heat is the maximum potential of the nonideal explosive to do work externally, but according to the law of thermodynamics, the heat can not be completely converted into work, so the precise measurement of the work-doing capacity of the nonideal explosive has high practical value.
Various explosive explosion work-doing evaluation methods such as a lead casting method, a ballistic mortar method and the like are established at present. The lead casting method is determined as an international standard method for determining explosive work in 1903 by applying the chemical international conference fifth time, and has the advantages of simple operation, no need of special testing instruments and good repeatability of measurement results, but has the defects of small test dose (standard specification of 10g), incapability of realizing complete detonation of non-ideal explosives, and incapability of determining specific explosive work characteristic quantity values by comparing the measurement results only with the explosive work of different explosives; the ballistic mortar method is a measuring device designed according to the momentum conservation principle and used for evaluating explosive work doing, the repeatability of the measuring result is better than that of a lead casting method, but the defect is that the ideal explosive work doing within 10g can be measured only by explosion work doing, and the work doing in the expansion stage of detonation products cannot be measured because mortar shell pills can rush out of a mortar body after the explosive is exploded, so the explosive work doing value measured by the method is only 20% -30% of the total explosive energy, and meanwhile, the measuring result changes along with the mortar pendulum length and the change of test conditions, so the significance of explosive work doing measured by the method is considered to be not great at present. The explosive work of the non-ideal explosive relates to the detonation wave work of the main explosive, the expansion work of detonation products, the energy release work of post-combustion effect and the like, so a fixed value device system capable of accurately measuring the explosive work of the non-ideal explosive is required to be established by combining the explosive characteristics of the non-ideal explosive.
With the formula design of a large amount of non-ideal explosives turning from thermodynamics to dynamics, the energy output structure of the explosives cannot be represented by the evaluation of the single work doing capacity, the formula dynamics design cannot be guided, and a set of non-ideal explosive work doing power representation system for representing the correlation between the explosive work doing capacity and the detonation reaction process on a time scale needs to be established, so that the explosive detonation reaction dynamics process is disclosed.
Disclosure of Invention
Aiming at the defects or shortcomings of the existing explosive working capacity measuring device, the invention provides the device which is suitable for measuring the working capacity and the working power of the non-ideal explosive, ensures that the pressure of the explosive is not released after the explosion, ensures the continuous working capacity, uses the detonation energy as much as possible for working, and greatly improves the measurement precision of the explosive working capacity. The measurement of the explosive working power is realized by measuring the explosive working damping force and the displacement parameter in real time.
In order to realize the task, the invention adopts the following technical solution:
the utility model provides a non-ideal explosive explosion working capacity and power measuring device which characterized in that, includes explosion chamber end cover 1, explosion chamber 2, nylon cover 3, strikes end cover 4, piston rod 5, connecting rod 6, hydraulic damper 7, base, ceramic shell, wherein:
the explosion cavity end cover 1 is in a steel round table shape and comprises an explosion cavity end cover main body 1-1, a binding post 1-2 and a vent valve 1-3. The explosion cavity 2 is a steel cylinder with a round through hole processed at the center of the bottom, the piston rod 5 penetrates out through the round hole, and the explosion cavity 2 is connected with the explosion cavity end cover 1 through a bolt. The nylon sleeve 3 is a nylon round tube and is lined on the inner side of the explosion cavity 2 and the inner side of the round hole. The impact end cover 4 is a steel cylinder, a cylindrical threaded counter bore is machined in the end face of one side of the impact end cover and is connected with the piston rod 5 through threads.
The piston rod 5 is a steel rod piece, the main body is cylindrical, the tail part is in a regular quadrangular prism shape, the cylinder is coaxial with the regular quadrangular prism, the end of the cylinder is processed with threads and is connected with the impact end cover 4 through the threads, one end of the regular quadrangular prism is processed with a cylindrical through hole, and the connecting rod 6 penetrates through the cylindrical through hole and then is fixedly connected with the piston rod 5 through a bolt. The connecting rod 6 is a steel rod piece, one end of the connecting rod is cylindrical, a thread is machined, the other end of the connecting rod is in a regular quadrangular prism shape, a cylindrical through hole is machined, and the cylinder is coaxial with the regular quadrangular prism.
The hydraulic damper 7 can dynamically adjust the output force and record displacement-time and damping force-time data, an output rod of the hydraulic damper 7 penetrates through a cylindrical through hole of the connecting rod 6 and then is fastened and connected through a bolt, and the lower portion of the hydraulic damper 7 is of a channel steel structure and fixed on the ground through foundation bolts. The base is the channel-section steel, with explosion cavity 2 welding on the base, is fixed in ground through rag bolt. The ceramic shell is a ceramic round tube and is in close contact with the nylon sleeve 3. The hydraulic damper 7 can select different resistance output ranges and displacement output ranges according to the test medicine amount and the power, and the sampling frequency of displacement-time data and force-time data is 30 kHz-1 MHz.
The device for measuring the work doing capability and power of the non-ideal explosive explosion is based on the characteristics of large critical diameter and large width of a detonation reaction area of the non-ideal explosive, adopts the ceramic constraint shell to reduce the free space in the explosion cavity as much as possible, reduces the energy loss caused by the free expansion of detonation products to do work on air, and adopts the closed explosion cavity to keep a closed state all the time after the explosive is detonated, thereby ensuring the continuity of the work doing, realizing the measurement of all the mechanical work done in the detonation process of the non-ideal explosive and the diffusion of the detonation products, overcoming the pressure relief defect of the existing open measuring device and realizing more accurate work doing capability measurement.
The device for measuring the work-doing capacity and power of the non-ideal explosive explosion realizes the measurement of the instantaneous work-doing power of the explosive explosion by recording the displacement parameter and the damping force parameter of the hydraulic damper through the energy conversion principle, thereby evaluating the energy output structure of the non-ideal explosive from the aspect of dynamics.
Drawings
FIG. 1 is a general assembly drawing of the non-ideal explosive work-doing capacity and power measuring device of the present invention.
Figure 2 is a diagram of an explosion chamber end cap.
Fig. 3 is a structural view of the connecting rod.
The present invention will be described in further detail with reference to the following drawings and examples.
Detailed Description
The technical conception of the invention is as follows: the explosive explosion work-doing capacity and power measuring device is suitable for a non-ideal explosive work-doing capacity and power measuring device which is large in detonation critical diameter, long in explosion reaction energy release time, slow in product expansion and strong in explosion continuous work-doing capacity, ensures that pressure is not released after the explosive is detonated, ensures the continuous work-doing capacity, can use detonation energy for doing work as much as possible, and greatly improves the measurement accuracy of explosive explosion work-doing functional capacity. The measurement of the explosive working power is realized by measuring the explosive working damping force and the displacement parameter in real time.
The following are examples given by the inventors. In the following examples, the parts are not described as being made of stainless steel, and the fastening members such as bolts and nuts are standard members.
Example 1:
referring to fig. 1 to 3, the present embodiment provides a specific structure and manufacturing and assembling example of a non-ideal explosive work-doing capacity and power measuring device. The device for measuring the explosive work-doing capability and power of the non-ideal explosive at least comprises an explosion cavity end cover 1, an explosion cavity 2, a nylon sleeve 3, an impact end cover 4, a piston rod 5, a connecting rod 6, a hydraulic damper 7, a base and a ceramic shell.
Referring to fig. 1, the explosion chamber 2 is a horizontal cylinder, is integrally cast from stainless steel, has an outer diameter of 310mm to 360mm, an overall length of 500mm to 600mm, has a left end with a thickness of 30mm to 40mm on the right side opened, and has an internal thread with a depth of 60mm to 80mm, and a circular through hole with a diameter at the center on the right end. The nylon sleeve 3 is made of a round tube nylon material, the length of the nylon sleeve is 440 mm-520 mm, the outer diameter of the nylon sleeve is 220 mm-260 mm, the nylon sleeve is the same as the explosion cavity 2, the inner diameter of the nylon sleeve is 210 mm-254 mm, and the nylon sleeve is 3-5 mm thick. The nylon sleeve 3 used for the through hole on the right side of the explosion cavity 2 has the outer diameter of 130 mm-150 mm, the inner diameter of 110 mm-144 mm and the thickness of 3-5 mm. The impact end cover 4 is cylindrical and is integrally cast by stainless steel, the diameter is 210 mm-254 mm, the thickness is 60 mm-80 mm, a counter bore with the diameter of 110 mm-144 mm and the depth of 30 mm-40 mm is arranged on the right side, and the counter bore is used for being connected with the piston rod 5. The piston rod 5 is a stainless steel casting with the total length of 700-800 mm, the diameter of the cylindrical part of 110-144 mm and the length of 550-650 mm, the side length of the regular quadrangular prism part of 120-154 mm and the length of 100-150 mm, and the diameter of the cylindrical hole of 90-100 mm. The hydraulic damper 7 is a damper with variable damping, can record stroke change and damping force time-varying data, and has a data sampling frequency of 30 kHz-1 MHz. The base is the channel-section steel structure, adopts rag bolt to be fixed in ground, and the base is used for supporting explosion cavity 2 and hydraulic damper 7 to make the central axis of explosion cavity 2 and hydraulic damper 7 be located same horizontal position. The ceramic shell is a round tube, the inner diameter is 25 mm-40 mm, the outer diameter is 210 mm-254 mm which is the same as the inner diameter of the nylon sleeve 3, and the length is 130-150 mm.
Referring to fig. 2, the end cover 1 of the explosion cavity is in a steel round table shape and is provided with a binding post 1-2 and a vent valve 1-3, the main body 1-1 of the end cover of the explosion cavity is connected with the explosion cavity 2 through a bolt, and an O-shaped vacuum rubber plate sealing ring is adopted to ensure the air tightness. The explosion cavity end cover main body 1-1 is in a circular truncated cone shape and is integrally processed by high-strength stainless steel, the diameter of the end cover main body is 310-360 mm, the diameter of the circular truncated cone is 220-260 mm, the overall height of the end cover main body is 60-80 mm, and the height of the circular truncated cone is 30-40 mm. 10-12 through holes with the diameter of 16-21 mm are uniformly distributed on the outer edge of the end cover main body 1-1 of the explosion cavity and are used for being connected with the explosion cavity 2 through bolts. The wiring terminal 1-2 is processed by a copper bar, the diameter is 5 mm-8 mm, the length is 100 mm-150 mm, the wiring terminal is fixedly arranged on the main body 1-1 of the end cover of the explosion cavity by screw threads, and the wiring terminal 1-2 and the main body 1-1 of the end cover of the explosion cavity are insulated by insulated bakelite. Drilling a through hole with internal threads and the diameter of 10-12 mm on the end cover main body 1-1 of the explosion cavity, and installing an upper vent valve 1-3 through a sealing thread. The sealing ring is formed by processing a vacuum rubber plate, the outer diameter of the sealing ring is 310-360 mm, the inner diameter of the sealing ring is 225-265 mm, the thickness of the sealing ring is 3-5 mm, 10-12 through holes with the diameter of 16-21 mm are uniformly distributed, and the number, the position and the diameter of the through holes are the same as those of the through holes on the outer edge of the end cover main body 1-1 of the explosion cavity.
Referring to fig. 3, the connecting rod 6 is used for connecting the piston rod 5 and the hydraulic damper 7, and has a total length of 350mm to 400mm, a cylindrical part diameter of 80mm to 90mm, a length of 130mm to 150mm, a regular quadrangular prism part side length of 100mm to 110mm, a length of 200mm to 250mm, and a cylindrical hole diameter of 80mm to 90 mm.
When the nonideal explosive work doing capacity and power measuring device is assembled, the connecting rod 6 is screwed into the thread of the hydraulic damper 7, the piston rod 5 and the impact end cover 4 are tightly connected through the thread, the nylon sleeve 3 is lined in the explosion cavity 2, the assembled piston rod 5 and the impact end cover 4 are filled in the explosion cavity 2, and the piston rod 5 penetrates through the through hole of the explosion cavity 2 and is connected with the hydraulic damper 7 through the connecting rod 6. The explosive sample is filled into the ceramic shell and then is integrally filled into the explosion cavity 3, and the distance between the ceramic shell and the edge of the explosion cavity 2 is equal to the height of the circular truncated cone of the end cover 1 of the explosion cavity. The piston rod 5 is slowly moved until the impact end cap 4 comes into contact with the ceramic shell. And connecting the sample with the binding post 1-2, and fastening the explosion cavity end cover 1 on the explosion cavity 2 through a bolt to complete assembly.
Example 2:
this example shows an example of using the apparatus for measuring explosive working capacity and power of non-ideal explosive manufactured in example 1 to measure explosive working capacity of a certain aluminum-containing non-ideal explosive.
The formulation of the non-ideal explosive used in this example was 65RDX/30Al/5 viscose, and cylindrical explosive pellets of 40mm diameter and 50g mass were prepared by a compression molding process. The method used in example 1 is adopted in the assembly process, and the test result shows that the work is 127.5kJ, the work capacity is 2.55MJ/kg, and the peak work power is 3.35 MW.
Claims (1)
1. The utility model provides a non-ideal explosive explosion working capacity and power measuring device which characterized in that, includes explosion chamber end cover (1), explosion cavity (2), nylon cover (3), strikes end cover (4), piston rod (5), connecting rod (6), hydraulic damper (7), base, ceramic shell, wherein:
the explosion cavity end cover (1) is in a steel round table shape and comprises an explosion cavity end cover main body (1-1), a binding post (1-2) and a vent valve (1-3);
the explosion cavity (2) is a steel cylinder with a round through hole processed at the center of the bottom, the piston rod (5) penetrates through the round hole, and the explosion cavity (2) is connected with the explosion cavity end cover (1) through a bolt;
the nylon sleeve (3) is a circular nylon tube and is lined on the inner side of the explosion cavity (2) and the inner side of the circular hole;
the impact end cover (4) is a steel cylinder, a cylindrical threaded counter bore is machined in the end face of one side of the impact end cover, and the impact end cover is connected with the piston rod (5) through threads;
the piston rod (5) is a steel rod piece, the main body of the piston rod is cylindrical, the tail of the piston rod is in a regular quadrangular prism shape, the cylinder is coaxial with the regular quadrangular prism, the end of the cylinder is provided with threads and is connected with the impact end cover (4) through the threads, one end of the regular quadrangular prism is provided with a cylindrical through hole, and the connecting rod (6) penetrates through the cylindrical through hole and is fixedly connected with the piston rod (5) through a bolt;
the connecting rod (6) is a steel rod piece, one end of the connecting rod is cylindrical and is provided with a thread, the other end of the connecting rod is in a regular quadrangular prism shape and is provided with a cylindrical through hole, and the cylinder is coaxial with the regular quadrangular prism;
the hydraulic damper (7) can dynamically adjust the magnitude of output force and can record displacement-time and damping force-time data, an output rod of the hydraulic damper (7) penetrates through a cylindrical through hole of the connecting rod (6) and then is fastened and connected by adopting a bolt, and the lower part of the hydraulic damper (7) is of a channel steel structure and is fixed on the ground by foundation bolts;
the base is made of channel steel, the explosion cavity (2) is welded on the base and is fixed on the ground through foundation bolts;
the ceramic shell is a ceramic round tube and is in close contact with the nylon sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810986180.3A CN108895930B (en) | 2018-08-28 | 2018-08-28 | Non-ideal explosive explosion work-doing capacity and power measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810986180.3A CN108895930B (en) | 2018-08-28 | 2018-08-28 | Non-ideal explosive explosion work-doing capacity and power measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108895930A CN108895930A (en) | 2018-11-27 |
| CN108895930B true CN108895930B (en) | 2020-07-17 |
Family
ID=64358491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810986180.3A Active CN108895930B (en) | 2018-08-28 | 2018-08-28 | Non-ideal explosive explosion work-doing capacity and power measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108895930B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201820139D0 (en) * | 2018-12-11 | 2019-01-23 | Secr Defence | Piston housing, apparatus, method of manufacture and use |
| CN110081784A (en) * | 2019-06-20 | 2019-08-02 | 永康市正祥五金制品科技有限公司 | A kind of ammunition testing device |
| CN110595298B (en) * | 2019-09-12 | 2021-10-01 | 西安近代化学研究所 | Equipment impact damage equivalent target |
| CN112284599B (en) * | 2020-08-31 | 2022-04-22 | 四川航天川南火工技术有限公司 | Acceptance device and method for quantifying output power of flexible detonating cord |
| CN112556517A (en) * | 2020-12-10 | 2021-03-26 | 西安近代化学研究所 | Explosive explosion power measuring method |
| CN113375612B (en) * | 2021-06-10 | 2022-06-10 | 南京理工大学 | Device and method for testing critical detonation size of explosive based on 3D ink-jet charging |
| CN116086258B (en) * | 2022-09-08 | 2024-07-16 | 北京理工大学 | Explosive detonation and explosion propagation experimental device |
| CN117451241A (en) * | 2023-10-30 | 2024-01-26 | 北京理工大学 | Method and device for measuring quasi-static pressure of explosion in closed space |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3886792A (en) * | 1972-03-13 | 1975-06-03 | Pcb Piezotronics Inc | Conformal pressure transducer for ammunition testing |
| CN101339182A (en) * | 2008-08-20 | 2009-01-07 | 西安近代化学研究所 | Propellant combustion tail gas quantitatively measuring device |
| CN101694365A (en) * | 2009-08-27 | 2010-04-14 | 北京理工大学 | Explosion device with piston device |
| CN103412107A (en) * | 2013-05-24 | 2013-11-27 | 西安近代化学研究所 | Nonideal explosive work capacity measuring device |
| CN105158291A (en) * | 2015-10-23 | 2015-12-16 | 西安近代化学研究所 | Explosive body expansion coefficient testing device |
-
2018
- 2018-08-28 CN CN201810986180.3A patent/CN108895930B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3886792A (en) * | 1972-03-13 | 1975-06-03 | Pcb Piezotronics Inc | Conformal pressure transducer for ammunition testing |
| CN101339182A (en) * | 2008-08-20 | 2009-01-07 | 西安近代化学研究所 | Propellant combustion tail gas quantitatively measuring device |
| CN101694365A (en) * | 2009-08-27 | 2010-04-14 | 北京理工大学 | Explosion device with piston device |
| CN103412107A (en) * | 2013-05-24 | 2013-11-27 | 西安近代化学研究所 | Nonideal explosive work capacity measuring device |
| CN105158291A (en) * | 2015-10-23 | 2015-12-16 | 西安近代化学研究所 | Explosive body expansion coefficient testing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108895930A (en) | 2018-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108895930B (en) | Non-ideal explosive explosion work-doing capacity and power measuring device | |
| CN103412107B (en) | Nonideal explosive work capacity measurement mechanism | |
| CN101216478B (en) | Explosive friction sensitivity instrument | |
| CN201421387Y (en) | Calibration device for high-range dynamic pressure sensor | |
| CN103322869B (en) | Missile body charge friction environment simulating device | |
| CN106969897B (en) | Equivalent loading experimental device capable of realizing underwater explosion shock wave shock compression of material | |
| CN108088949B (en) | A kind of experimental provision that COMBUSTION TO DETONATION TRANSITION is influenced for convective burning and method | |
| CN102706224B (en) | Friction load loading device | |
| CN107063843B (en) | Underwater extremely near-field electric spark bubble wall pressure load measurement experiment device | |
| CN103712740B (en) | Flat pressure sensor dynamic high-pressure calibrating installation | |
| CN104535439A (en) | Double-pulse-load loading test device | |
| CN112556517A (en) | Explosive explosion power measuring method | |
| CN108982245A (en) | Bursting charge impact shear simulation test device | |
| CN201673095U (en) | Bullet fired cylinder for Hopkinson pressure bar | |
| CN102297754A (en) | Test apparatus for fatigue of spring under continuous impact of high pressure gas | |
| CN110926748B (en) | Experimental device for curved surface boundary multi-angle electric spark bubble wall pressure load | |
| CN110132471A (en) | A kind of thin-wall circular cartridge type explosion wave pressure tester and its assembly method | |
| CN204461659U (en) | A kind of Dynamic High-accuracy thrust measurement system of miniature firer's acting device | |
| CN110530787A (en) | A kind of explosive stress test device based on multiple pulses test | |
| CN109187913B (en) | Simple testing device for cylinder test | |
| CN203163921U (en) | Apparatus for testing explosive working capacity | |
| CN104316667A (en) | Projectile charge compression environment simulation test device | |
| CN200941091Y (en) | Shock wave electrical probe dynamic parameters detector | |
| CN209311212U (en) | A kind of split hopkinson press bar positioning device suitable for more size test specimens | |
| CN209704547U (en) | The laser velocimeter device of hydraulic impacter block stamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |