Ignition and recoil force testing system and method for energetic materials

Abstract

The application discloses a kind of ignition and recoil force test system and method of energetic material.The heating ignition device of system is used to heat energy release testing device;Energy release testing device is used to excite the energetic material to be measured pre-placed in one end of energy release testing device under the heating action of heating ignition device, so that it releases energy and ejects product to one side to generate recoil force on the other side, and weight collection device is used to collect and record the mass change curve of the energetic material to be measured with time in the heating and energy release process of energetic material;Recoil force collection device is arranged on one side of energy release testing device, for collecting and recording the recoil force change curve generated by the energetic material to be measured with time in the heating and energy release process of energetic material;Temperature collection device is used to collect and record the temperature change curve of the energetic material to be measured with time in the heating and energy release process of energetic material.The application is convenient for measuring the thrust generated by energetic material, and convenient operation.

Description

Technical Field

[0001] This invention relates to the field of ignition and mechanical property research technology of energetic materials, and more specifically, to a system and method for testing the ignition and recoil force of energetic materials. Background Technology

[0002] In the study of energetic materials, their reaction characteristics are often the focus of research. There are various methods to excite energetic materials, but the most common one is thermal excitation. Current experimental devices generally use heating methods such as resistance thermometers or chemical heating, which have limited heating rates.

[0003] Meanwhile, during the energy release process, energetic materials can generate substantial recoil thrust if the generated gases and released energy are guided. This has significant applications in aerospace, particularly in aircraft and underwater vehicles. Current thrust testing systems are complex and relatively large, lacking measurement solutions for small-scale thrust systems. To rationally utilize the recoil force generated by energetic materials, a simpler method is needed to measure their reactive thrust for quantitative analysis. Summary of the Invention

[0004] The purpose of this invention is to provide an ignition and recoil force testing system and method for energetic materials, so as to overcome the defects of the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An ignition and recoil force testing system for energetic materials includes an energy release testing device, a heating ignition device, a recoil force acquisition device, a weight acquisition device, and a temperature acquisition device.

[0007] The heating and ignition device is used to heat the energy release testing device;

[0008] The energy release testing device is mounted on the weight acquisition device. The energy release testing device is used to excite the energy-containing material to be tested, which is pre-placed at one end of the energy release testing device, under the heating action of the heating and ignition device, so that it releases energy and sprays the product to one side to generate a recoil force to the other side. The weight acquisition device is used to collect and record the mass change curve of the energy-containing material to be tested over time during the heating and energy release process of the energy-containing material.

[0009] The recoil force acquisition device is located on one side of the energy release test device. The recoil force acquisition device is used to acquire and record the change curve of the recoil force generated by the energetic material under test over time during the heating and energy release process of the energetic material.

[0010] The temperature acquisition device is located on one side of the energy release testing device. The temperature acquisition device is used to acquire and record the temperature change curve of the energetic material under test over time during the heating and energy release process of the energetic material.

[0011] Furthermore, the energy release testing device includes an energetic material filling component, which has an energetic material filling cavity for filling energetic material. The opening of the energetic material filling cavity is disposed at one end of the energetic material filling component, and the filling component is covered with heat insulation material. When the recoil force generated by the energetic material under test releases energy does work on the energetic material filling component, the energetic material filling component can move along its axial direction toward the recoil force acquisition device and apply the recoil force to the recoil force acquisition device. The recoil force acquisition device collects the applied recoil force data.

[0012] Furthermore, the energetic material filling component is mounted on the weight acquisition device via a limiting support component, and the energetic material filling component moves along its axial direction on the limiting support component. The limiting support component is used to limit and connect the connecting parts of the energetic material filling component, such as a sliding sleeve, a sliding ring, a sliding rail, or a sliding groove.

[0013] Furthermore, the energetic material filling component is a crucible with one open end, the inner layer of the crucible is a material that can be heated by electromagnetic induction, the outer layer of the crucible is a heat insulation layer made of ceramic, the limiting support component is a crucible limiting support, the upper part of the crucible limiting support is a sliding sleeve, the crucible is slidably disposed in the sliding sleeve along its axial direction, and the sliding sleeve and the crucible are in direct contact or bearing sliding contact.

[0014] Furthermore, the recoil force acquisition device includes a pressure sensor, which is in contact with the end of the energetic material filling component without openings and is fixedly installed relative to the energy release testing device. The recoil force acquisition device acquires the recoil force data generated by the pressure sensor.

[0015] Furthermore, the weight acquisition device includes a limiting mechanism, a weighing sensing unit, and a weighing plate. The weighing plate is mounted on the weighing sensing unit, the energy release testing device is disposed on the weighing plate, and the limiting mechanism is disposed around the weighing plate to restrict the horizontal movement, upward vertical movement, and flipping movement of the weighing plate.

[0016] Furthermore, the limiting mechanism includes a limiting plate and a limiting bolt. The weighing plate is provided with limiting plates on both sides, and each limiting plate is provided with a limiting bolt that penetrates the limiting plate.

[0017] Furthermore, the heating and ignition device includes a matching heating controller and an electromagnetic induction heating coil. The electromagnetic induction heating coil heats the energy release testing device in a non-contact manner to excite the energetic material under test to release energy.

[0018] Furthermore, the temperature acquisition device is a non-contact infrared temperature sensor.

[0019] The present invention also provides a method for testing the ignition and recoil force of the above-described energetic material, comprising the following steps:

[0020] S1. Assemble the energy release testing device, heating and ignition device, recoil force acquisition device, weight acquisition device and temperature acquisition device.

[0021] S2. Place the energy-containing material to be tested of a preset mass into the energy-containing material filling chamber of the energy release testing device;

[0022] S3. The heating device, in conjunction with the temperature acquisition device, heats the energy release testing device at a preset heating rate until the energetic material to be tested is excited and releases energy, generating a recoil force that is applied to the energy release testing device and acts on the recoil force acquisition device. During the heating and energy release process of the energetic material, the temperature acquisition device collects and records the temperature change curve of the energetic material to be tested over time, the weight acquisition device collects and records the mass change curve of the energetic material to be tested over time, and the recoil force acquisition device collects and records the recoil force generated by the energetic material to be tested over time.

[0023] S4. Quantitatively analyze the energy release capacity of energetic materials using the change curves obtained in step S3.

[0024] Compared with the prior art, the advantages of the present invention are as follows: The ignition and recoil force testing system and method for energetic materials provided by the present invention adopt electromagnetic induction heating ignition, which has high heating efficiency and a wide range of adjustable heating rate, making it easy to measure the thrust generated by energetic materials. It is convenient to operate, and adopts non-contact temperature measurement technology to effectively avoid interference with the test. Moreover, it has a simple structure, is economical and practical. The ignition and recoil force testing of energetic materials of the present invention has good versatility, making it easy to test a variety of energetic materials. In addition, it can simultaneously acquire three data curves. The obtained temperature curve, mass change curve and recoil pressure curve provide good data support for comprehensive analysis of the excitation, energy release and other behaviors of energetic materials. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural diagram of the ignition and recoil force testing system for energetic materials of the present invention.

[0027] Figure 2 This is a flowchart of the ignition and recoil force testing method for energetic materials of the present invention.

[0028] In the diagram: 1. Heating controller; 2. Infrared temperature sensor; 3. Electromagnetic induction heating coil; 4. Crucible limit support; 5. Crucible; 6. Electromagnetic shielding box; 7. Pressure sensor; 8. Limiting mechanism; 9. Limiting plate; 10. Limiting bolt; 11. Weighing sensing unit; 12. Weighing plate; 13. Sensor bracket; 14. Base plate; 15. Vertical plate. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0030] Example 1

[0031] See Figure 1 As shown, this embodiment discloses an ignition and recoil force testing system for energetic materials, including an energy release testing device, a heating and ignition device, a recoil force acquisition device, a weight acquisition device, and a temperature acquisition device. The heating and ignition device is used to heat the energy release testing device. The energy release testing device is disposed on the weight acquisition device and is used to excite the energetic material to be tested, which is pre-placed at one end of the energy release testing device, to release energy and generate recoil force under the heating action of the heating and ignition device. The weight acquisition device is used to collect and record the mass change curve of the energetic material to be tested over time during the heating and energy release process. The recoil force acquisition device is disposed on one side of the energy release testing device and is used to collect and record the recoil force generated by the energetic material to be tested over time during the heating and energy release process. The temperature acquisition device is disposed on one side of the energy release testing device and is used to collect and record the temperature change curve of the energetic material to be tested over time during the heating and energy release process.

[0032] In this embodiment, the energetic material to be tested is a solid.

[0033] The energy release testing device in this embodiment is the experimental body of the present invention. The energy release testing device includes an energetic material filling component, which has an energetic material filling cavity for filling energetic material. The opening of the energetic material filling cavity is located at one end of the energetic material filling component. When the energetic material filling component is heated by the heating and ignition device, the energetic material inside can be thermally excited. The excited energetic material is ejected from the opening of the energetic material filling cavity, thereby generating a reverse thrust, which is the recoil force. When the recoil force generated by the energy released by the energetic material to be tested does work on the energetic material filling component, the energetic material filling component can move along its axial direction toward the recoil force acquisition device and apply the recoil force to the recoil force acquisition device. Correspondingly, the recoil force acquisition device collects the applied recoil force data.

[0034] In this embodiment, the energetic material filling component is a crucible 5 with one open end, and is cylindrical in shape (or other shapes). Its energetic material filling cavity can be heated by electromagnetic induction. The inner layer of the crucible 5 is a material that can be heated by electromagnetic induction, and the outer layer is a ceramic heat insulation layer. The energetic material filling component is equipped with a limiting support, which fixes it to the weight acquisition device. The energetic material filling component can move axially on the limiting support. The limiting support is used to limit and connect the connecting parts of the energetic material filling component, such as a sliding sleeve, sliding ring, sliding rail, or sliding groove. In this embodiment, a crucible limiting support 4 fixedly mounted on the weight acquisition device is used as the limiting support. The upper part of the crucible limiting support 4 is a sliding sleeve, and the crucible 5 is slidably disposed within the sliding sleeve along its axial direction. The sliding sleeve and the crucible 5 are in direct contact, or a bearing can be used to achieve sliding contact.

[0035] Preferably, the inner side of the crucible 5 in this embodiment is made of a material that can be induction heated, such as steel, iron, or graphite, while the outer layer of the crucible 5 is protected by a non-conductive heat-insulating ceramic.

[0036] The recoil force acquisition device in this embodiment includes a pressure sensor 7. The pressure sensor 7 is in contact with the other end of the energetic material filling component without openings and is fixedly installed relative to the energy release testing device. The recoil force acquisition device acquires the generated recoil force data through the pressure sensor 7. Specifically, the recoil force acquisition device also includes a base plate 14 fixedly installed relative to the weight acquisition device. A vertical plate 15 is provided on the base plate 14. The pressure sensor 7 is installed on the front side of the vertical plate 15 through a sensor bracket 13. The vertical plate 15 has a protrusion that abuts against one side of the pressure sensor 7. An extension rod is connected axially to the other end of the crucible 5 at its opening. The extension rod abuts against the other side of the pressure sensor 7.

[0037] Preferably, the pressure sensor 7 is further provided with an electromagnetic shielding box 6, which can effectively prevent the electromagnetic field generated by the heating and ignition device or external electromagnetic field from affecting the pressure sensor 7.

[0038] In one specific embodiment, the weight acquisition device includes a limiting mechanism 8, a weighing sensing unit 11, and a weighing plate 12. The weighing plate 12 is mounted on the weighing sensing unit 11, and the energy release testing device is disposed on the weighing plate 12. The limiting mechanism 8 is disposed around the weighing plate 12 to restrict the horizontal movement, upward movement (i.e., vertical movement), and flipping movement of the weighing plate 12. Specifically, the limiting mechanism 8 includes a limiting plate 9 surrounding the weighing plate 12, used to restrict the horizontal movement of the weighing plate 12. That is, when the recoil force generated by the energy released by the energetic material does work on the energetic material filling component, the weighing plate 12 will not be displaced. The limiting plate 9 is also provided with a limiting bolt 10 located above the weighing plate 12, used to restrict the upward movement and flipping movement of the weighing plate 12.

[0039] In another specific embodiment, the heating and ignition device includes a matching heating controller 1 and an electromagnetic induction heating coil 3. The electromagnetic induction heating coil 3 heats the energy release testing device in a non-contact manner to excite the energetic material to release energy. In this embodiment, the electromagnetic induction heating coil 3 is sleeved on the outer periphery of the crucible 5. The temperature acquisition device includes an infrared temperature sensor 2, which faces the opening of the crucible 5 to measure the temperature of the energetic material inside. The infrared temperature sensor 2 is electrically connected to the heating controller 1, which can control the heating rate and collect and record the temperature change curve over time, thus obtaining the start time of thermal excitation by the heating and ignition device for subsequent data analysis.

[0040] Example 2

[0041] This embodiment also provides a test method for the ignition and recoil force testing system of energetic materials according to Embodiment 1, including the following steps:

[0042] Step S1: Assemble the energy release testing device, heating and ignition device, recoil force acquisition device, weight acquisition device, and temperature acquisition device.

[0043] Step S2: Place the preset mass of the energetic material to be tested into the energetic material filling chamber of the energy release testing device;

[0044] Step S3: Heat the energy release testing device according to the preset heating rate until the energetic material to be tested is excited and releases energy, generating a recoil force that is applied to the energy release testing device and acts on the recoil force acquisition device; during the heating and energy release process of the energetic material, the temperature acquisition device collects and records the temperature change curve of the energetic material to be tested over time, the weight acquisition device collects and records the mass change curve of the energetic material to be tested over time, and the recoil force acquisition device collects and records the recoil force generated by the energetic material to be tested over time.

[0045] Step S4: Quantitatively analyze the energy release capacity of the energetic material using the change curve obtained in step S3.

[0046] The mass change of the energetic material in this invention is related to its reaction rate. The mass change curve reveals the extent and rate of the reaction. Combined with temperature-time curves, the temperature conditions under which the reaction occurs and the influence of temperature changes on the initiation conditions and reaction rate can be analyzed, thus understanding the relationship between temperature regulation and the extent of the energetic material's reaction. Furthermore, by combining the recoil force curve, the relationship between the extent and rate of reaction and the resulting thrust change can be determined, leading to the recoil force efficiency per unit mass of reaction. Therefore, this invention enables a comprehensive understanding of the properties of energetic materials, facilitating their better utilization.

[0047] The above quantitative analysis of the energy release capacity of energetic materials is based on the chemical reaction equations of energetic materials. The specific chemical reaction equations are existing technologies and will not be described in detail here.

[0048] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, the patent owner may make various modifications or alterations within the scope of the appended claims, as long as they do not exceed the protection scope described in the claims of the present invention, they shall be within the protection scope of the present invention.

Claims

1. A system for testing the ignition and recoil force of energetic materials, characterized in that, It includes an energy release testing device, a heating and ignition device, a recoil force acquisition device, a weight acquisition device, and a temperature acquisition device; The heating and ignition device is used to heat the energy release testing device; The energy release testing device is mounted on the weight acquisition device. The energy release testing device is used to excite the energy-containing material to be tested, which is pre-placed at one end of the energy release testing device, under the heating action of the heating and ignition device, so that it releases energy and sprays the product to one side to generate a recoil force to the other side. The weight acquisition device is used to collect and record the mass change curve of the energy-containing material to be tested over time during the heating and energy release process of the energy-containing material. The recoil force acquisition device is located on one side of the energy release test device. The recoil force acquisition device is used to acquire and record the change curve of the recoil force generated by the energetic material under test over time during the heating and energy release process of the energetic material. The temperature acquisition device is located on one side of the energy release test device. The temperature acquisition device is used to acquire and record the temperature change curve of the energy-containing material under test over time during the heating and energy release process of the energy-containing material. The energy release testing device includes an energetic material filling component, which has an energetic material filling cavity for filling energetic material. The opening of the energetic material filling cavity is disposed at one end of the energetic material filling component. When the recoil force generated by the energetic material under test releases energy does work on the energetic material filling component, the energetic material filling component can move along its axial direction toward the recoil force acquisition device and apply the recoil force to the recoil force acquisition device. The recoil force acquisition device collects the applied recoil force data. The energetic material filling component is mounted on the weight acquisition device via a limiting support component. The energetic material filling component moves along its axial direction on the limiting support component. The limiting support component is used to limit and connect the connecting parts of the energetic material filling component, such as a sliding sleeve, a sliding ring, a sliding rail, or a sliding groove. The energetic material filling component is a crucible with one open end. The inner layer of the crucible is a material that can be heated by electromagnetic induction, and the outer layer of the crucible is a heat insulation layer made of ceramic. The limiting support component is a crucible limiting support. The upper part of the crucible limiting support is a sliding sleeve. The crucible is slidably disposed in the sliding sleeve along its axial direction. The sliding sleeve and the crucible are in direct contact or bearing sliding contact. The recoil force acquisition device includes a pressure sensor, which is in contact with the non-perforated end of the energetic material filling component and is fixedly installed relative to the energy release testing device. The recoil force acquisition device acquires the recoil force data generated by the pressure sensor.

2. The ignition and recoil force testing system for energetic materials according to claim 1, characterized in that, The weight acquisition device includes a limiting mechanism, a weighing sensing unit, and a weighing plate. The weighing plate is mounted on the weighing sensing unit, the energy release testing device is disposed on the weighing plate, and the limiting mechanism is disposed around the weighing plate to restrict the horizontal movement, upward vertical movement, and flipping movement of the weighing plate.

3. The ignition and recoil force testing system for energetic materials according to claim 2, characterized in that, The limiting mechanism includes a limiting plate and a limiting bolt. The weighing plate is provided with limiting plates on both sides, and each limiting plate is provided with a limiting bolt that passes through the limiting plate.

4. The ignition and recoil force testing system for energetic materials according to claim 1, characterized in that, The heating and ignition device includes a heating controller and an electromagnetic induction heating coil. The electromagnetic induction heating coil heats the energy release test device in a non-contact manner to excite the energetic material to be tested to release energy.

5. The ignition and recoil force testing system for energetic materials according to claim 1, characterized in that, The temperature acquisition device is a non-contact infrared temperature sensor.

6. A method for testing the ignition and recoil force of energetic materials according to any one of claims 1-5, characterized in that, Includes the following steps: S1. Assemble the energy release testing device, heating and ignition device, recoil force acquisition device, weight acquisition device and temperature acquisition device. S2. Place the energy-containing material to be tested of a preset mass into the energy-containing material filling chamber of the energy release testing device; S3. The heating device, in conjunction with the temperature acquisition device, heats the energy release test device at a preset heating rate until the energetic material to be tested is excited and releases energy, generating a recoil force that is applied to the energy release test device and acts on the recoil force acquisition device. During the heating and energy release process of energetic materials, the temperature change curve of the energetic material under test is collected and recorded by the temperature acquisition device, the mass change curve of the energetic material under test is collected and recorded by the weight acquisition device, and the recoil force change curve of the energetic material under test is collected and recorded by the recoil force acquisition device. S4. Quantitatively analyze the energy release capacity of energetic materials using the change curves obtained in step S3.

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