Cold-flow transient pressure-stabilizing filling device for simulating gunpowder starting

Abstract

The utility model relates to the technical field of firer devices, in particular to a cold flow transient pressure stabilizing filling device for simulating gunpowder starting, which comprises a pressure stabilizing tank mounting seat, a pressure stabilizing tank, a connecting pipe, a three-way adapter, a pressure sensor and an electromagnetic valve, wherein the lower surface of the surge tank mounting seat is used for being in contact with the ground, and the upper surface of the surge tank mounting seat is fixed to the lower end of the surge tank; a surge tank air inlet and a surge tank air outlet are formed in the upper end of the surge tank, the surge tank air inlet is used for being communicated with an upstream pipeline, and the surge tank air outlet is communicated with an inlet of the connecting pipe; an outlet of the connecting pipe is communicated with an inlet of the three-way adapter, one outlet of the three-way adapter is communicated with the pressure sensor, another outlet of the three-way adapter is communicated with an inlet of the electromagnetic valve, and an outlet of the electromagnetic valve is used for being communicated with an inlet of a tested firer device. The device is simple and reliable in structure, high in filling speed, stable in filling pressure and capable of truly simulating the gunpowder starting filling process.

Description

Technical Field

[0001] The present application relates to the technical field of pyrotechnic devices, and in particular to a cold flow transient pressure stabilizing filling device for simulating gunpowder initiation. Background Art

[0002] Pyrotechnic devices have a simple structure and high reliability and are widely used in the aerospace field. During the development phase of pyrotechnic devices, in order to reduce the number of hot-test products, lower development costs, and shorten the development cycle, a large number of cold flow tests are carried out before the hot test to fully verify its functional feasibility. During the cold flow test, to ensure the authenticity of the simulation, the filling of the cold air flow in the cavity of the pyrotechnic device is required to be as close as possible to the gunpowder initiation filling process. According to engineering experience, the gunpowder initiation filling time is about 5ms to 10ms, which is a transient pressure-stabilized filling process.

[0003] Existing test devices mainly pressurize low-pressure gas through a pump, or reduce the pressure of high-pressure gas through a pressure reducing valve and then transport it to the cavity of the pyrotechnic device. The filling time of the cold airflow in the cavity of the pyrotechnic device reaches hundreds of milliseconds or even several seconds, and the pressure fluctuates greatly during the filling process, making it difficult to simulate the transient pressure stabilization characteristics of the gunpowder starting process.

[0004] Therefore, how to simulate the transient voltage stabilization characteristics of the gunpowder starting process is a technical problem that technicians in this field urgently need to solve. Utility Model Content

[0005] In view of this, the utility model provides a cold flow transient pressure-stabilizing filling device that simulates gunpowder initiation, which can be used for cold flow tests of various types of pyrotechnic devices. Its structure is simple and reliable, and the cold airflow fills the pyrotechnic device cavity at a fast speed and a stable filling pressure. It can more realistically simulate the gunpowder initiation filling process and can fully verify the functional feasibility of the pyrotechnic device.

[0006] To solve the above technical problems, this application provides the following technical solutions:

[0007] A cold flow transient pressure-stabilizing filling device for simulating gunpowder initiation comprises: a pressure-stabilizing tank mounting seat, a pressure-stabilizing tank, a connecting pipe, a three-way adapter, a pressure sensor and a solenoid valve; wherein, the lower surface of the pressure-stabilizing tank mounting seat is used to contact the ground, and the upper surface of the pressure-stabilizing tank mounting seat is fixed to the lower end of the pressure-stabilizing tank; the upper end of the pressure-stabilizing tank has a pressure-stabilizing tank air inlet and a pressure-stabilizing tank air outlet, the pressure-stabilizing tank air inlet is used to communicate with an upstream pipeline, and the pressure-stabilizing tank air outlet is connected to the inlet of the connecting pipe; the outlet of the connecting pipe is connected to the inlet of the three-way adapter, one outlet of the three-way adapter is connected to the pressure sensor, and the other outlet of the three-way adapter is connected to the inlet of the solenoid valve, and the outlet of the solenoid valve is used to communicate with the inlet of the pyrotechnic device to be tested.

[0008] In the cold flow transient pressure-stabilized filling device simulating gunpowder initiation as described above, preferably, the control switch of the solenoid valve is a transient response device.

[0009] As described above, in the cold flow transient pressure stabilizing filling device simulating gunpowder initiation, preferably, the volume of the pressure stabilizing tank is N times the volume of the volume of the pyrotechnic device.

[0010] As described above, in the cold flow transient pressure stabilizing filling device simulating gunpowder initiation, preferably, the upper surface of the pressure stabilizing tank mounting seat has a plurality of mounting seat mounting holes, and the lower end of the pressure stabilizing tank is fixed with a flange, and bolts are passed through the mounting seat mounting holes and the mounting holes of the flange to fix the lower end of the pressure stabilizing tank to the upper surface of the pressure stabilizing tank mounting seat.

[0011] As described above, in the cold flow transient pressure stabilizing filling device simulating gunpowder initiation, preferably, the upper surface of the pressure stabilizing tank mounting seat has two rows of mounting seat mounting holes, and two opposite mounting holes on the flange with the same diameter are connected to two opposite mounting seat mounting holes in the two rows of mounting seat mounting holes by bolts.

[0012] In the cold flow transient pressure stabilizing filling device simulating gunpowder activation as described above, preferably, the interior of the pressure tank mounting seat is a hollow structure, and a window that passes through the inside and outside is opened on the side wall of the pressure stabilizing tank mounting seat.

[0013] As described above, in the cold flow transient pressure stabilizing filling device simulating gunpowder activation, preferably, the pressure stabilizing tank mounting seat is a rectangular parallelepiped structure, and two windows are provided on the side wall located on the long side, and one window is provided on the side wall located on the wide side.

[0014] In the cold flow transient pressure-stabilized filling device simulating gunpowder initiation as described above, preferably, the pressure tank is a rotating body structure.

[0015] In the cold flow transient pressure-stabilized filling device simulating gunpowder initiation as described above, preferably, the pressure tank is a cylindrical structure.

[0016] In the cold flow transient pressure stabilizing filling device simulating gunpowder initiation as described above, preferably, the pressure stabilizing tank air inlet and the pressure stabilizing tank air outlet are located on the same diameter of the upper end surface of the pressure stabilizing tank.

[0017] Beneficial effects:

[0018] The cold flow transient voltage-stabilizing filling device for simulating gunpowder initiation provided by the utility model can be used for cold flow tests of various types of pyrotechnic devices, has versatility, and has a simple and reliable structure. It can also more realistically simulate the gunpowder initiation filling process, and can fully verify the functional feasibility of the pyrotechnic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of a cold flow transient pressure stabilizing filling device simulating gunpowder initiation provided in an embodiment of the present application;

[0021] Among them, 1-pressure stabilizing tank mounting base, 11-mounting base mounting hole, 12-window, 2-pressure stabilizing tank, 21-pressure stabilizing tank air inlet, 22-pressure stabilizing tank air outlet, 3-connecting pipe, 4-three-way adapter, 5-pressure sensor, 6-solenoid valve, 61-solenoid valve outlet. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In addition, spatial relationship terms such as "upper", "lower", "left", "right", "front", "rear", etc. are used to facilitate the description to explain the positional relationship between two components. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and are not to be construed as limiting the present application.

[0023] like Figure 1 As shown, the present application provides a cold flow transient pressure stabilizing filling device that simulates gunpowder initiation, including: a pressure stabilizing tank mounting seat 1, a pressure stabilizing tank 2, a connecting pipe 3, a three-way adapter 4, a pressure sensor 5 and a solenoid valve 6.

[0024] Among them, the lower surface of the pressure-surge tank mounting base 1 is used to contact the ground, and the upper surface of the pressure-surge tank mounting base 1 is fixed to the lower end of the pressure-surge tank 2. Optionally, the upper surface of the pressure-surge tank mounting base 1 has a plurality of mounting base mounting holes 11, and the lower end of the pressure-surge tank 2 is fixed with a flange, and bolts are passed through the mounting base mounting holes 11 of the pressure-surge tank mounting base 1 and the mounting holes of the flange, thereby fixing the lower end of the pressure-surge tank 2 to the upper surface of the pressure-surge tank mounting base 1. Also optionally, the upper surface of the pressure-surge tank mounting base 1 has two rows of mounting base mounting holes 11, and two opposite mounting holes on the same diameter on the flange are connected to two opposite mounting base mounting holes 11 in the two rows of mounting base mounting holes 11 of the pressure-surge tank mounting base 1 by bolts, so that the position of the pressure-surge tank 2 on the pressure-surge tank mounting base 1 can be adjusted according to actual conditions. Alternatively, the interior of the surge tank mounting base 1 is a hollow structure, and a window 12 is provided on the side wall of the surge tank mounting base 1, which is connected to the inside and outside, so that bolts can be operated through the window 12 to achieve a fixed connection between the surge tank mounting base 1 and the surge tank 2. Alternatively, the surge tank mounting base 1 is a rectangular parallelepiped structure, and two windows 12 are provided on the side walls located on the long sides, and one window 12 is provided on the side wall located on the wide side.

[0025] The upper end of the pressure-surge tank 2 has a pressure-surge tank air inlet 21 and a pressure-surge tank air outlet 22. The pressure-surge tank air inlet 21 is used to communicate with the upstream pipeline, thereby transporting cold flow gas to the pressure-surge tank 2 through the upstream pipeline, and the pressure-surge tank air outlet 22 is connected to the inlet of the connecting pipe 3. Optionally, the pressure-surge tank 2 is a rotating body structure that can withstand an internal pressure load of hundreds of MPa. Optionally, the pressure-surge tank 2 is a cylindrical structure. Optionally, the pressure-surge tank air inlet 21 and the pressure-surge tank air outlet 22 are located on the same diameter of the upper end face of the pressure-surge tank 2.

[0026] The outlet of the connecting pipe 3 is connected to the inlet of the three-way adapter 4, one outlet of the three-way adapter 4 is connected to the pressure sensor 5, the pressure sensor 5 is used to measure the pressure of the cold flow gas in the pressure regulating tank 2, the other outlet of the three-way adapter 4 is connected to the inlet of the solenoid valve 6, the outlet 61 of the solenoid valve 6 is used to connect to the inlet of the tested pyrotechnic device, and the solenoid valve 6 is used to control the discharge of the cold flow gas into the cavity of the tested pyrotechnic device.

[0027] When using the cold flow transient pressure-stabilizing filling device for simulating gunpowder initiation of the present application, the pressure-stabilizing tank mounting base 1 is placed horizontally on the ground or fixed to the ground. Before the cold flow test, the pressure sensor 5 is to measure the pressure of the cold flow gas in the pressure-stabilizing tank 2, which should meet the design requirements. The control switch of the solenoid valve 6 is a transient response device. Transient response refers to the process in which the output signal of the system changes with time after a sudden change (such as a step signal, a pulse signal, etc.) in the input signal (excitation) of the system occurs. The volume of the pressure-stabilizing tank 2 is N times that of the volume of the pyrotechnic device being tested, for example, greater than 100 times. This can make the volume of the pressure-stabilizing tank 2 much larger than that of the pyrotechnic device being tested. Therefore, the cold flow transient pressure-stabilizing filling device for simulating gunpowder initiation of the present application can more realistically simulate the transient characteristics and pressure-stabilizing characteristics of the gunpowder initiation filling process.

[0028] When conducting a cold flow test on a pyrotechnic device, cold flow gas is first delivered to the cavity of the pressure-surge tank 2 through the upstream pipeline connected to the pressure-surge tank air inlet 21, and the pressure sensor 5 measures the pressure of the cold flow gas in the pressure-surge tank 2 in real time. After the pressure of the cold flow gas in the pressure-surge tank 2 reaches the design requirement, the upstream pipeline stops delivering cold flow gas to the pressure-surge tank 2; then, by opening the solenoid valve 6, the cold flow gas in the pressure-surge tank 2 is instantly filled into the cavity of the tested pyrotechnic device, thereby simulating the filling process in the cavity of the pyrotechnic device after the gunpowder is started.

[0029] The present application can be used for cold flow tests of various types of pyrotechnic devices, has universality, and has a simple and reliable structure. It can also more realistically simulate the gunpowder starting filling process, and can fully verify the functional feasibility of the pyrotechnic device.

[0030] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present application. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0031] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A cold flow transient pressure stabilizing filling device simulating gunpowder start, characterized in that: include: Surge tank mounting base, surge tank, connecting pipe, three-way adapter, pressure sensor and solenoid valve; The lower surface of the pressure stabilizing tank mounting seat is used to contact the ground, and the upper surface of the pressure stabilizing tank mounting seat is fixed to the lower end of the pressure stabilizing tank; The upper end of the pressure stabilizing tank is provided with a pressure stabilizing tank air inlet and a pressure stabilizing tank air outlet. The pressure stabilizing tank air inlet is used to communicate with the upstream pipeline, and the pressure stabilizing tank air outlet is connected to the inlet of the connecting pipe; The outlet of the connecting pipe is connected to the inlet of the three-way adapter, one outlet of the three-way adapter is connected to the pressure sensor, the other outlet of the three-way adapter is connected to the inlet of the solenoid valve, and the outlet of the solenoid valve is used to connect to the inlet of the tested pyrotechnic device.

2. The cold flow transient pressure stabilizing filling device simulating gunpowder start according to claim 1, characterized in that: The control switch of the solenoid valve is a transient response device.

3. The cold flow transient pressure stabilizing filling device simulating gunpowder start according to claim 2, characterized in that: The volume of the surge tank is N times the volume of the pyrotechnic device.

4. The cold flow transient pressure stabilizing filling device simulating gunpowder start according to any one of claims 1 to 3, characterized in that: The upper surface of the pressure stabilizing tank mounting seat has multiple mounting seat mounting holes, and the lower end of the pressure stabilizing tank is fixed with a flange. Bolts are passed through the mounting seat mounting holes and the mounting holes of the flange to fix the lower end of the pressure stabilizing tank to the upper surface of the pressure stabilizing tank mounting seat.

5. The cold flow transient pressure stabilizing filling device simulating gunpowder start according to claim 4, characterized in that: The upper surface of the pressure stabilizing tank mounting seat is provided with two rows of mounting seat mounting holes, and two opposite mounting holes on the flange with the same diameter are connected to two opposite mounting seat mounting holes in the two rows of mounting seat mounting holes by bolts.

6. The cold flow transient pressure stabilizing filling device simulating gunpowder start according to claim 4, characterized in that: The interior of the pressure tank mounting seat is a hollow structure, and a window that passes through the inside and outside is opened on the side wall of the pressure stabilizing tank mounting seat.

7. The cold flow transient pressure stabilizing filling device simulating gunpowder start according to claim 6, characterized in that: The pressure stabilizing tank mounting seat is a rectangular parallelepiped structure, and two windows are provided on the side wall located on the long side, and one window is provided on the side wall located on the wide side.

8. The cold flow transient pressure stabilizing filling device simulating gunpowder start according to any one of claims 1 to 3, characterized in that: The pressure tank is a rotating body structure.

9. The cold flow transient pressure stabilizing filling device simulating gunpowder start according to claim 8, characterized in that: The pressure tank is a cylindrical structure.

10. The cold flow transient pressure stabilizing filling device simulating gunpowder start according to claim 9, characterized in that: The air inlet of the pressure stabilizing tank and the air outlet of the pressure stabilizing tank are located on the same diameter of the upper end surface of the pressure stabilizing tank.

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