Flow channel controller of visual solid propellant high-pressure combustion device

Abstract

A flow channel controller of a visual solid propellant high-pressure combustion device relates to the technical field of solid propellant high-pressure combustion devices and comprises an annular cylinder, a middle cavity of the annular cylinder is a central circulation channel, and the wall of the annular cylinder is composed of a plurality of flow channel controller concave parts and flow channel controller convex parts which are alternately and annularly distributed in sequence; the concave part of the flow channel controller forms circulating backflow flow channels, and each circulating backflow flow channel is communicated with the central circulation channel; the flow channel controller protruding part is used for changing the flowing direction of internal circulation gas, and the interior of the flow channel controller protruding part is a hollow groove body used for reducing weight. After the internal circulation flowing gas impacts the upper flange end cover of the high-pressure combustion chamber, the airflow flowing area is adjusted through the flow channel controller, and the situation that particles carried by the internal circulation flowing gas affect the observation view range is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of high-pressure combustion devices for solid propellants, and more specifically, to a flow channel controller for a visual high-pressure combustion device for solid propellants. Background Art

[0002] When a solid propellant burns inside an engine, it is accompanied by high-temperature and high-pressure environmental conditions, so it is difficult to observe the specific phenomena during combustion. To solve this problem, by conducting a solid propellant strip combustion experiment in a sealed high-pressure container to simulate its combustion inside a solid engine, and by opening high-pressure transparent combustion windows around the sealed high-pressure combustion chamber, measuring instruments can conveniently observe the combustion phenomena of the solid propellant in the high-pressure combustion chamber. However, when the solid propellant burns, the smoke formed by metal combustion condensed-phase particles and coke particles generated by incomplete combustion of organic matter will enter the observation field of view due to diffusion and turbulence, thereby affecting the observation of combustion phenomena. Summary of the Invention

[0003] To solve the above technical problems in the prior art, the present invention provides a flow channel controller for a visual high-pressure combustion device for solid propellants. After the inner-circulation flowing gas impacts the upper flange end cover of the high-pressure combustion chamber, the flow channel controller adjusts the gas flow region to avoid the influence of the particles carried by the inner-circulation flowing gas within the observation field of view.

[0004] The technical solution of the present invention is achieved by the following measures: It includes an annular cylinder. The central cavity of the annular cylinder is a central flow channel. The wall of the annular cylinder is composed of a plurality of flow channel controller recesses and flow channel controller protrusions alternately arranged in a ring. The flow channel controller recesses form circulating return flow channels, and each circulating return flow channel is connected to the central flow channel. The flow channel controller protrusions are used to change the flow direction of the inner-circulation gas, and the inside of the flow channel controller protrusions is a hollow groove body for weight reduction.

[0005] The annular cylinder is located above the visual window of the visual high-pressure combustion device for solid propellants.

[0006] There is a recess for yielding to the visual window at the bottom of the flow channel controller protrusion.

[0007] The axis of the recess for yielding is corresponding to the axis of each visual window.

[0008] The flow channel controller recess is a sector-ring column groove, and the flow channel controller protrusion is a sector-ring column. The inside of the sector-ring column is a hollow groove body for weight reduction, and the opening on the outer wall of the annular cylinder forms the notch of the hollow groove body.

[0009] In the middle of the inner wall of the visualization solid propellant high-pressure combustion device, there is a boss for placing the flow channel controller, and the annular cylinder is placed on the boss for placing the flow channel controller; rotate and adjust the flow channel controller so as not to affect the observation field of view.

[0010] The boss for placing the flow channel controller is a ring-shaped structure composed of multiple arc-shaped boss segments arranged in a circular pattern, and the space for yielding to the visualization window is provided between adjacent two arc-shaped boss segments.

[0011] According to an embodiment of the present disclosure, the above-mentioned flow channel controller divides the circulating return channel into 4 gas flow channels. The flow channel controller is located above the visualization window; the flow channel controller includes an annular cylinder, the middle cavity of the annular cylinder is the central flow channel, and the wall of the annular cylinder is composed of multiple flow channel controller recesses and flow channel controller protrusions alternately arranged in a circular pattern; the flow channel controller recesses form the circulating return flow channels, and each circulating return flow channel is connected to the central flow channel; the flow channel controller protrusions are used to change the flow direction of the internal circulation gas, the inside of the flow channel controller protrusions is a hollow groove body for weight reduction, and there is a yielding recess at the bottom of the flow channel controller protrusion for yielding to the visualization window, and the axis of the yielding recess corresponds to the axis of each visualization window.

[0012] According to an embodiment of the present disclosure, the above-mentioned internal circulation flowing gas adjusts the gas flow area through the flow channel controller after hitting the upper flange end cover of the high-pressure combustion chamber, so as to avoid the influence caused by the particles carried by the internal circulation flowing gas within the observation field of view. Description of the Drawings

[0013] From the following detailed description of the embodiments of the present invention in conjunction with the drawings, these and / or other aspects and advantages of the present invention will become clearer and easier to understand, where:

[0014] Figure 1 is a structural sectional view of the visualization high-pressure combustion chamber;

[0015] Figure 2 is a schematic structural view of the flow channel controller;

[0016] Figure 3 is an installation schematic view of the present utility model. Detailed Embodiment

[0017] To make the purpose, technical solution and advantages of this embodiment clearer, the following combines specific embodiments and refers to the drawings to describe the technical solution in more detail.

[0018] In this embodiment, for the convenience of description, the description of the relative position relationship of each component is based on the layout mode of the attached drawings of the specification. Figure 1 For example, the position relationships such as front, rear, up, down, left, and right are determined according to the layout direction of the attached drawings of the specification. Figure 1 of the specification.

[0019] In the description of this embodiment, unless otherwise clearly defined, terms such as "set", "installed", and "connected" should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in this embodiment in combination with the specific content of the technical solution.

[0020] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting this embodiment. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention. The following will describe this embodiment in detail with reference to the accompanying drawings:

[0021] Attached Figures 1-3 Among them, the visualized high-pressure combustion chamber is a sealed container. The combustion chamber cavity 107 and the lower flange end cover 117 of the combustion chamber are connected and fastened by the lower flange end cover bolts 116 and the lower flange end cover nuts 115; the combustion chamber cavity 107 and the upper flange end cover 105 of the combustion chamber are connected and fastened by the upper flange end cover bolts 103 and the upper flange end cover nuts 106; a flow path controller placement boss 109 is provided at the middle position of the combustion chamber cavity 107 for placing the flow path controller 501; four mutually perpendicular visualization windows are provided at the middle position of the combustion chamber cavity 107; the visualization window is pressed against the observation transparent window piece 110 by the observation window cover plate 108 under the connection and fastening action of the observation window bolts 111 and the observation window nuts 112; a combustion chamber intake solenoid valve controller 113 is connected to the lower part of the combustion chamber cavity 107, and a combustion chamber outlet solenoid valve controller 118 is connected at its opposite position. A temperature sensor 102 and a pressure sensor 104 are provided on the upper part of the upper flange end cover 105 of the combustion chamber; small holes are reserved on the lower flange end cover 117 for installing the electric heating wire ignition electrode 202, and three support rods 304 for placing the medicine strip fixture are evenly distributed and welded on the lower flange end cover 117 at a 120° direction.

[0022] The flow path controller 501 is placed above the flow path controller placement boss 109; the flow path controller 501 is located above the visualization window; the flow path controller 501 includes an annular cylinder, the middle cavity of the annular cylinder is the central flow channel 502, and the annular cylinder wall is composed of a plurality of flow path controller recesses 503 and flow path controller protrusions 504 alternately arranged in a ring; the flow path controller recesses 503 form a circulating return flow path, and each circulating return flow path is connected to the central flow channel 502; the flow path controller protrusions 504 are used to change the flow direction of the internal circulating gas, and the internal hollow groove body 505 reduces the weight of the flow path controller. There is a relief recess 506 at the bottom of the protrusion 504 for making way for the visualization window, and the axis of the relief recess 506 corresponds to the axis of each visualization window to avoid the particles entrained by the airflow in the flow channel from affecting the observation.

[0023] During use, the visualized high-pressure combustion chamber is placed on the experimental platform and fixed. The ignition electrode terminal 201 is externally connected to a control voltage. The electromagnetic control valve 118 at the combustion chamber outlet is in the open state, and the electromagnetic control valve 113 at the combustion chamber inlet is in the closed state; the upper flange end cover 105 of the visualized high-pressure combustion chamber is opened, and the sealed high-pressure combustion chamber is in the open state.

[0024] The propellant fixture after clamping the solid propellant strip is installed on the support rod 304. The solid propellant strip is in the middle of the propellant ignition wire, and both ends of the propellant ignition wire are respectively wound around the electrothermal wire ignition electrode 202. The ignition electrode terminal 201 is externally connected to a control voltage; the flow path controller 501 is placed on the flow path controller placement boss 109, and the flow path controller 501 is rotated and adjusted so as not to affect the observation field of view; the upper flange end cover bolt 103 and the upper flange end cover nut 106 are used to make the upper flange end cover 105 of the combustion chamber in close contact with the combustion chamber cavity 107. During the installation process, the upper flange end cover handle 101 is outside the high-pressure combustion chamber.

Claims

1. A flow channel controller for a visualization solid propellant high-pressure combustion device, characterized in that, It includes an annular cylinder. The middle cavity of the annular cylinder is a central flow channel (502). The wall of the annular cylinder is composed of a plurality of flow channel controller recesses (503) and flow channel controller protrusions (504) alternately arranged in a ring. The flow channel controller recesses (503) form circulating reflux channels, and each circulating reflux channel is connected to the central flow channel (502). The flow channel controller protrusions (504) are used to change the flow direction of the internal circulation gas, and the inside of the flow channel controller protrusions (504) is a hollow groove body (505) for weight reduction.

2. The flow channel controller of the visualization solid propellant high-pressure combustion device according to claim 1, characterized in that, The annular cylinder is located above the visualization window of the visualization solid propellant high-pressure combustion device.

3. The flow channel controller of the visualization solid propellant high-pressure combustion device according to claim 2, wherein There is a recess (506) for making way for the visualization window at the bottom of the flow channel controller protrusion (504).

4. The flow channel controller of the visualization solid propellant high-pressure combustion device according to claim 3, characterized in that The axis of the recess (506) for making way corresponds to the axis of each visualization window.

5. The flow channel controller of the visual solid propellant high-pressure combustion device according to claim 1, characterized in that, The flow channel controller recess (503) is a sector-ring column groove, and the flow channel controller protrusion (504) is a sector-ring column. The inside of the sector-ring column is a hollow groove body (505) for weight reduction, and the opening on the outer wall of the annular cylinder forms the notch of the hollow groove body.

6. The flow channel controller of the visualization solid propellant high-pressure combustion device according to claim 1, characterized in that, There is a flow channel controller placement boss (109) in the middle of the inner wall of the visualization solid propellant high-pressure combustion device, and the annular cylinder is placed on the flow channel controller placement boss (109).

7. The flow channel controller of the visualization solid propellant high-pressure combustion device according to claim 6, characterized in that The flow channel controller placement boss (109) is a ring-shaped structure composed of a plurality of arc-shaped boss segments arranged in a ring, and the space for making way for the visualization window is between adjacent two arc-shaped boss segments.

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