Sliding disc flow regulating device and method for solid fuel gas generator

Abstract

A sliding disc flow regulation device and method for a solid fuel gas generator, wherein the device includes a sliding disc mover assembly, a rear cover assembly, and a servo actuator assembly. Flow regulation includes two working states, both of which require adjusting the motion state of the sliding disc mover assembly. Adjusting the sliding disc mover assembly counterclockwise reduces the flow area between the throat lining of the sliding disc mover assembly and the throat lining of the rear cover assembly, increases the pressure in the combustion chamber, increases the burning rate of the solid propellant, and increases the gas flow rate; adjusting the sliding disc mover assembly clockwise increases the flow area between the throat lining of the sliding disc mover assembly and the throat lining of the rear cover assembly, reduces the pressure in the combustion chamber, reduces the burning rate of the solid propellant, and reduces the gas flow rate; the adjustment of the solid fuel gas flow rate to increase or decrease is achieved through the reciprocating motion of the sliding disc mover assembly. The present invention processes the rear cover assembly of the solid rocket engine, realizes the adjustment of the solid fuel gas flow rate, and improves the performance and ballistic maneuverability of the solid rocket engine.

Description

Technical Field

[0001] The invention belongs to the technical field of solid propulsion combustion, and in particular to a sliding disc flow regulating device and method for a solid fuel gas generator. Background Art

[0002] Because the solid propellant is fixed within the engine, the thrust and combustion time of solid rocket engines are more difficult to control and adjust compared to liquid rocket engines. Solid fuel gas flow regulation is a technology that adjusts thrust by controlling the combustion rate or combustion area of the solid rocket engine propellant. Solid fuel gas flow regulation enables precise control of solid rocket engine thrust, thereby improving engine performance. It also allows for thrust adjustment based on mission requirements, adapting to different mission requirements. For missions requiring thrust adjustment at different altitudes and speeds, solid fuel gas flow regulation enables precise thrust control, optimizing solid rocket engine performance and improving thrust and combustion efficiency. Furthermore, solid fuel gas flow regulation can reduce the cost of solid rocket engines. Precise thrust control can reduce propellant waste and incomplete combustion, thereby reducing engine costs. In summary, solid fuel gas flow regulation is a key method for solid rocket engine thrust control, playing a vital role in improving launch accuracy, adapting to different mission requirements, enhancing engine performance, and reducing costs.

[0003] The shortcomings of current solid fuel gas flow regulation technology mainly include the following aspects:

[0004] Low precision: Solid fuel gas flow control technology is not yet accurate enough to meet the high-precision requirements of some missions. For missions requiring precise thrust control, existing solid fuel gas flow control technology cannot meet the requirements.

[0005] Insufficient reliability: Solid fuel gas flow control technology is not yet reliable enough and is prone to failure. Problems such as gas nozzle blockage and gas valve failure can affect gas flow control.

[0006] Limited adjustment range: Solid fuel gas flow control technology has a limited adjustment range and cannot meet the needs of some special missions. For example, for missions that require thrust adjustment at different altitudes and speeds, existing solid fuel gas flow control technology cannot meet the requirements.

[0007] High cost: The cost of solid fuel gas flow regulation technology is high, which is not conducive to its promotion and application.

[0008] In summary, the current shortcomings of solid fuel gas flow control technology primarily include low accuracy, insufficient reliability, limited adjustment range, and high cost. These issues need to be addressed through technological innovation and R&D to improve the accuracy, reliability, and applicability of solid fuel gas flow control technology, reduce costs, and promote its widespread application in the aerospace field.

[0009] The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the Invention

[0010] To address the challenges of existing technologies, the present invention proposes a sliding-disc flow control device and method for a solid fuel gas generator. By controlling the position and speed of the sliding disk, the combustion chamber pressure is adjusted, thereby varying the solid propellant combustion rate and thereby regulating the fuel gas flow. This device offers advantages such as high regulation accuracy, excellent reliability, and a wide adjustment range.

[0011] The object of the present invention is achieved through the following technical solutions: a sliding disc flow regulating device for a solid fuel gas generator comprises:

[0012] A rear cover assembly comprising:

[0013] a rear cover housing having a hollow cavity extending along a central axis,

[0014] a back cover heat insulation layer, which is attached to one side of the back cover shell and covers the hollow cavity,

[0015] a rear cover ablation layer, which is attached to the side of the rear cover heat insulation layer opposite to the rear cover shell and forms a fuel channel in the hollow cavity,

[0016] a rear cover throat liner embedded in the rear cover ablation layer to be flush with the fuel passage and perpendicular to the inner end surface of the rear cover ablation layer of the fuel passage, wherein the rear cover assembly is provided with a mounting cavity penetrating the rear cover shell, the rear cover insulation layer and the rear cover ablation layer;

[0017] A servo actuator assembly comprising:

[0018] A servo motor is fixed to the other side of the rear cover housing relative to the rear cover insulation layer,

[0019] A host computer, which is connected to and controls the servo motor,

[0020] a sliding disk shaft, one end of which is connected to the servo motor, and the other end of which is rotatably arranged through the mounting cavity and extends out of the rear cover ablation layer, the sliding disk shaft being parallel to the central axis;

[0021] The sliding plate mover assembly comprises:

[0022] The sliding plate reinforcement rib is fixed vertically to the other end of the sliding plate shaft.

[0023] The sliding disc heat insulation layer wraps the sliding disc reinforcement ribs,

[0024] a sliding disc ablation layer, which is at least attached to the outer surface of the sliding disc heat insulation layer;

[0025] The sliding plate throat liner is embedded in the sliding plate heat insulation layer and is relative to the rear cover throat liner. As the sliding plate mover assembly rotates, the flow area between the sliding plate throat liner and the rear cover throat liner is changed.

[0026] The sliding disc flow regulating device of the solid fuel gas generator further includes a dynamic sealing device connected to the sliding disc shaft in a rotational sealing manner, which includes:

[0027] A graphite sealing ring is provided on the side of the mounting cavity facing the inner end surface.

[0028] a graphite retaining ring, which is arranged in the mounting cavity and located on a side of the graphite sealing ring away from the inner end surface;

[0029] At least one bearing is disposed in the mounting cavity and is located on a side of the graphite retaining ring away from the graphite sealing ring.

[0030] a bearing retaining ring, which abuts and locates the bearing,

[0031] The bearing buckle cover is arranged on the other side of the installation cavity away from the inner end surface. The sliding disk shaft is rotatably penetrated by a graphite sealing ring, a graphite retaining ring, a bearing, a bearing retaining ring and a bearing buckle cover.

[0032] In the sliding disc flow regulating device of the solid fuel gas generator, the rear cover ablation layer is provided with a sinking platform surrounding the installation cavity, and the sliding disc mover assembly is provided with a protrusion that matches the sinking platform.

[0033] In the sliding disc type flow regulating device of the solid fuel gas generator, the protrusion has a hollow recess for accommodating the sliding disc shaft and the graphite sealing ring.

[0034] In the sliding disc flow regulating device of the solid fuel gas generator, a rear cover sealing steel sleeve is provided between the sinking platform and the raised portion.

[0035] In the sliding disc flow regulating device of the solid fuel gas generator, the bearing buckle cover has a flange end covering the rear cover shell, and the flange end is fixed to the rear cover shell via a bearing buckle cover screw. The expansion degree of the graphite sealing ring is adjusted by adjusting the bearing buckle cover screw.

[0036] In the sliding disc flow regulating device of the solid fuel gas generator, the sliding disc sealing steel sleeve is arranged between the mounting cavity and the dynamic sealing device, one end of the sliding disc sealing steel sleeve extends into the sliding disc insulation layer, and the other end abuts the flange end, and the sliding disc sealing steel sleeve is clamped by the sliding disc sealing steel sleeve and the graphite sealing ring.

[0037] In the sliding disc flow regulating device of the solid fuel gas generator, one end of the sliding disc shaft is a hexagonal end connected to the hexagonal hole of the servo motor, and the other end has a mounting platform with a diameter greater than the diameter of the sliding disc shaft. The side of the mounting platform away from the servo motor is fixedly connected to the sliding disc reinforcement rib via a pin, and the other side of the mounting platform abuts the graphite sealing ring.

[0038] In the sliding disc type flow regulating device of the solid fuel gas generator, the sliding disc reinforcement rib has a sleeve ring for sleeve-connecting the sliding disc throat liner.

[0039] The working method of the sliding disc flow regulating device of the solid fuel gas generator includes the following steps:

[0040] When the solid fuel gas generator is working, the servo motor starts to rotate according to the instruction of the host computer, and the servo motor drives the sliding plate shaft to rotate together;

[0041] The sliding plate shaft drives the sliding plate mover assembly to rotate together, and the flow area of the sliding plate throat lining and the rear cover throat lining is changed during the rotation of the sliding plate mover assembly;

[0042] When the gas flow needs to be reduced, the sliding plate shaft drives the sliding plate mover assembly to rotate counterclockwise, the flow area between the sliding plate throat liner and the rear cover throat liner is reduced, the combustion chamber pressure increases, the solid propellant burning rate increases, and the gas flow increases; when the gas flow needs to be increased, the sliding plate shaft drives the sliding plate mover assembly to rotate clockwise, the flow area between the sliding plate throat liner and the rear cover throat liner increases, the combustion chamber pressure decreases, the solid propellant burning rate decreases, and the gas flow decreases.

[0043] Compared with the prior art, the present invention has the following advantages: the refractory metal sliding disc throat liner of the present invention contacts with the rear cover throat liner to form a gas flow throat, and under the action of the servo motor, higher precision requirements can be easily achieved. The sliding disc mover assembly and the rear cover assembly include an ablation layer and a sliding disc thermal insulation layer, which can adapt to the solid high-temperature gas environment and can achieve higher reliability requirements; the present invention adopts a sliding disc mover to actuate and change the flow area of the throat liner and the rear cover throat liner. Under extreme conditions, the flow area can be reduced to zero, the gas flow rate is infinite, and an extremely wide flow adjustment range can be achieved; the reciprocating motion of the sliding disc mover can realize the increase or decrease adjustment of the gas flow rate; due to the solid gas flow condition, the performance of the solid engine is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Various other advantages and benefits of the present invention will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are intended only to illustrate preferred embodiments and are not to be construed as limiting the present invention. It should be understood that the drawings described below are merely examples of the present invention, and that those skilled in the art will be able to derive other drawings from these drawings without inventive effort. Throughout the drawings, identical reference numerals are used to denote identical components.

[0045] In the attached figure:

[0046] Figure 1 2 is a schematic structural diagram of a sliding disc flow regulating device for a solid fuel gas generator according to an embodiment of the present invention;

[0047] Figure 2 is a half-section schematic diagram of a sliding disc flow regulating device for a solid fuel gas generator according to one embodiment of the present invention;

[0048] Figure 3 2. It is a schematic diagram of the right side structure of a sliding disc flow regulating device for a solid fuel gas generator according to one embodiment of the present invention;

[0049] Figure 4 The figure is a schematic structural diagram of the sliding disk reinforcement ribs of a sliding disk flow regulating device of a solid fuel gas generator according to an embodiment of the present invention.

[0050] The present invention will be further explained below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0051] Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although specific embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0052] It should be noted that certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that technicians may use different nouns to refer to the same component. This specification and claims do not use the difference in nouns as a way to distinguish components, but use the difference in the functions of the components as the criterion for distinction. As mentioned throughout the specification and claims, "including" or "comprising" is an open term, so it should be interpreted as "including but not limited to". The subsequent description of the specification is a preferred embodiment of the present invention, but the description is based on the general principles of the specification and is not intended to limit the scope of the invention. The scope of protection of the present invention shall be as defined in the attached claims.

[0053] To facilitate understanding of the embodiments of the present invention, further explanation will be given below using specific embodiments as examples in conjunction with the accompanying drawings, and the accompanying drawings do not constitute a limitation on the embodiments of the present invention.

[0054] For better understanding, in one embodiment, Figures 1 to 4 As shown, a sliding disc flow regulating device for a solid fuel gas generator includes:

[0055] The rear cover assembly 2 includes:

[0056] The rear cover housing 14 has a hollow cavity extending along a central axis.

[0057] The back cover heat insulation layer 13 is attached to one side of the back cover shell 14 and covers the hollow cavity.

[0058] The rear cover ablation layer 12 is attached to the side of the rear cover heat insulation layer 13 opposite to the rear cover shell 14 and forms a fuel channel in the hollow cavity.

[0059] The rear cover rubber sealing ring 15 is installed in the sealing groove on the outer surface of the rear cover shell 14.

[0060] a rear cover throat liner 11, which is embedded in the rear cover ablation layer 12 to be flush with the fuel channel and perpendicular to the inner end surface of the rear cover ablation layer 12 of the fuel channel, wherein the rear cover assembly 2 is provided with a mounting cavity that passes through the rear cover shell 14, the rear cover insulation layer 13 and the rear cover ablation layer 12;

[0061] The servo actuator assembly 3 includes:

[0062] The servo motor 23 is fixed to the other side of the rear cover shell 14 relative to the rear cover insulation layer 13.

[0063] The host computer 25 is connected to and controls the servo motor 23.

[0064] Cable 24, which is used to connect the servo motor 23 and the host computer 25,

[0065] A sliding plate shaft 6, one end of which is connected to the servo motor 23, and the other end of which is rotatably arranged through the mounting cavity and extends out of the rear cover ablation layer 12, and the sliding plate shaft 6 is parallel to the central axis;

[0066] The sliding plate mover assembly 1 comprises:

[0067] The sliding plate reinforcement rib 8 is vertically fixed to the other end of the sliding plate shaft 6.

[0068] The sliding disc heat insulation layer 5 wraps the sliding disc reinforcement rib 8.

[0069] The sliding disc ablation layer 4 is at least attached to the outer surface of the sliding disc heat insulation layer 5.

[0070] The sliding plate throat liner 10 is embedded in the sliding plate heat insulation layer 5 and is relative to the rear cover throat liner 11 . As the sliding plate mover assembly 1 rotates, the flow area between the sliding plate throat liner 10 and the rear cover throat liner 11 changes.

[0071] In a preferred embodiment of the sliding disc flow regulating device for the solid fuel gas generator, a dynamic sealing device is further provided which is rotationally sealed with the sliding disc shaft 6 and comprises:

[0072] The graphite sealing ring 17 is arranged on the side of the mounting cavity facing the inner end surface.

[0073] A graphite retaining ring 18 is provided in the mounting cavity and is located on the side of the graphite sealing ring 17 away from the inner end surface.

[0074] At least one bearing 19 is provided in the mounting cavity and is located on the side of the graphite retaining ring 18 away from the graphite sealing ring 17.

[0075] a bearing retaining ring 20 , which abuts and positions the bearing 19 ,

[0076] The bearing buckle cover 21 is arranged on the other side of the installation cavity away from the inner end surface. The sliding disk shaft 6 is rotatably penetrated by the graphite sealing ring 17, the graphite retaining ring 18, the bearing 19, the bearing retaining ring 20 and the bearing buckle cover 21.

[0077] In a preferred embodiment of the sliding disc flow regulating device for the solid fuel gas generator, the rear cover ablation layer 12 is provided with a sinking platform surrounding the installation cavity, and the sliding disc mover assembly 1 is provided with a protrusion that matches the sinking platform.

[0078] In a preferred embodiment of the sliding disc flow regulating device for the solid fuel gas generator, the protrusion has a hollow recess for accommodating the sliding disc shaft 6 and the graphite sealing ring 17 .

[0079] In a preferred embodiment of the sliding disc flow regulating device for the solid fuel gas generator, a rear cover sealing steel sleeve 16 is provided between the sinking platform and the raised portion.

[0080] In a preferred embodiment of the sliding disc flow regulating device of the solid fuel gas generator, the bearing buckle cover 21 has a flange end covering the rear cover shell 14, and the flange end is fixed to the rear cover shell 14 via the bearing buckle cover 21 screws, and the expansion degree of the graphite sealing ring 17 is adjusted by adjusting the bearing buckle cover 21 screws.

[0081] In a preferred embodiment of the sliding disc flow regulating device of the solid fuel gas generator, the sliding disc sealing steel sleeve 9 is arranged between the mounting cavity and the dynamic sealing device, one end of the sliding disc sealing steel sleeve 9 extends into the sliding disc insulation layer 5, and the other end abuts the flange end, and the sliding disc sealing steel sleeve 9 is clamped by the sliding disc insulation layer 5 and the graphite sealing ring 17.

[0082] In a preferred embodiment of the sliding disk flow regulating device of the solid fuel gas generator, one end of the sliding disk shaft 6 is a hexagonal end connected to the hexagonal hole of the servo motor, and the other end has a mounting platform with a diameter greater than the diameter of the sliding disk shaft 6. The side of the mounting platform away from the servo motor is fixedly connected to the sliding disk reinforcement rib 8 via a pin 7, and the other side of the mounting platform abuts the graphite sealing ring 17.

[0083] In a preferred embodiment of the sliding disc flow regulating device for the solid fuel gas generator, the sliding disc reinforcement rib 8 has a sleeve ring for sleeve-engaging the sliding disc throat liner 10 .

[0084] The working method of the sliding disc flow regulating device of the solid fuel gas generator includes the following steps:

[0085] When the solid fuel gas generator is working, the servo motor starts to rotate according to the instruction of the upper computer, and the servo motor drives the sliding plate shaft 6 to rotate together;

[0086] The sliding plate shaft 6 drives the sliding plate mover assembly 1 to rotate together, and the flow area of the sliding plate throat liner 10 and the rear cover throat liner 11 is changed during the rotation of the sliding plate mover assembly 1;

[0087] When the gas flow needs to be increased, the sliding plate shaft 6 drives the sliding plate mover assembly 1 to rotate counterclockwise, the flow area between the sliding plate throat liner 10 and the rear cover throat liner 11 is reduced, the combustion chamber pressure increases, the solid propellant burning rate increases, and the gas flow increases; when the gas flow needs to be reduced, the sliding plate shaft 6 drives the sliding plate mover assembly 1 to rotate clockwise, the flow area between the sliding plate throat liner 10 and the rear cover throat liner 11 is increased, the combustion chamber pressure decreases, the solid propellant burning rate decreases, and the gas flow decreases.

[0088] like Figures 1 to 4As shown, this embodiment provides a sliding disc flow regulating device and method for a solid fuel gas generator, which realizes solid fuel gas flow regulation for a solid rocket engine.

[0089] The present invention provides a sliding disc flow regulating device for a solid fuel gas generator, comprising a sliding disc actuator assembly 1, a rear cover assembly 2 and a servo actuator assembly 3;

[0090] The sliding disk mover includes a sliding disk ablation layer 4, a sliding disk thermal insulation layer 5, a sliding disk shaft 6, a pin 7, a sliding disk reinforcement rib 8, a sliding disk sealing steel sleeve 9, and a sliding disk throat liner 10; the sliding disk reinforcement rib 8 and the sliding disk throat liner 10 are placed in a mold and compression-molded to form the sliding disk thermal insulation layer 5, and the sliding disk reinforcement rib 8 is placed in the sliding disk thermal insulation layer 5 to increase the strength; the outer surface of the sliding disk thermal insulation layer 5 is formed into a disk ablation layer 4 by molding; the inner surface of the sliding disk thermal insulation layer 5 is bonded to the sliding disk sealing steel sleeve 9 by epoxy glue; the hexagonal end of the sliding disk shaft 6 is connected to the sliding disk reinforcement rib 8, and the sliding disk shaft 6 is fixed to the sliding disk reinforcement rib 8 by the pin 7 to form a sliding disk mover assembly.

[0091] The rear cover assembly includes a rear cover and a dynamic sealing device.

[0092] Rear cover: The rear cover ablation layer 12 and the rear cover heat insulation layer 13 are formed by molding; the sliding disc throat liner 10 is bonded to the inner surface of the cover ablation layer 12 by epoxy glue; the rear cover heat insulation layer 13 is bonded to the outer surface of the rear cover shell 14 by epoxy glue; two parallel rear cover rubber sealing rings are installed on the outside of the rear cover shell for sealing the connection with the engine.

[0093] Dynamic sealing device: The graphite sealing ring 17 is installed in the cavity formed by the rear cover assembly 2 and the sliding disk shaft 6. The graphite retaining ring 18, bearing 19, bearing retaining ring 20, bearing 19, and bearing buckle cover 21 are installed in sequence at the left end of the graphite sealing ring 17; the bearing buckle cover 21 is positioned at the upper end of the bearing 19, the bearing retaining ring 20 is positioned at the lower end of the bearing 19, and the two bearings 19 are fixed.

[0094] The servo actuator assembly includes a servo motor 23, a cable 24, a host computer 25 and motor mounting screws 26; the servo motor 23 is connected and fixed to the rear cover shell 14 through the motor mounting screws 26; the hexagonal hole of the servo motor 23 is connected to the hexagonal end of the sliding disk shaft 6.

[0095] See also Figure 1 As shown, the bearing cover 21 applies a preload force to the bearing 19 through the bearing cover screw 22 and transmits it to the graphite sealing ring 17. The graphite sealing ring 17 is compressed and expanded to seal the high-temperature combustion gas between the sliding plate sealing steel sleeve 9 and the rear cover sealing steel sleeve 16. By adjusting the bearing cover screw 22, the expansion degree of the graphite sealing ring 17 can be adjusted.

[0096] The working process of the present invention is as follows:

[0097] When the solid engine equipped with the solid gas generator sliding disc flow regulating device is working, the upper computer inputs the pre-made actuation program through the cable, and the servo motor 23 starts to rotate according to the upper pre-made program, and the servo motor 23 drives the sliding disc shaft 6 to rotate together;

[0098] The sliding plate shaft 6 drives the sliding plate mover assembly 1 to rotate together. During the rotation of the sliding plate mover assembly 1, the flow area of the sliding plate throat liner 10 and the rear cover throat liner 11 can be changed;

[0099] When the sliding disc flow regulating device of the solid fuel gas generator starts to work, the sliding disc throat liner 10 is placed at the tangent position of the left end of the rear cover throat liner 11, such as Figure 1 As shown; when the gas flow needs to be increased, the sliding plate shaft 6 drives the sliding plate mover assembly 1 to rotate counterclockwise, the flow area between the sliding plate throat liner 10 and the rear cover throat liner 11 is reduced, the combustion chamber pressure increases, the solid propellant burning rate increases, and the gas flow increases; when the gas flow needs to be reduced, the sliding plate shaft 6 drives the sliding plate mover assembly 1 to rotate clockwise, the flow area between the sliding plate throat liner 10 and the rear cover throat liner 11 is increased, the combustion chamber pressure decreases, the solid propellant burning rate decreases, and the gas flow decreases.

[0100] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments and application fields. The above-mentioned specific embodiments are merely illustrative and instructive, and are not restrictive. A person skilled in the art, guided by this specification and without departing from the scope of protection of the claims of the present invention, may also devise various forms, all of which fall within the scope of protection of the present invention.

Claims

1. A sliding disc flow regulating device for a solid fuel gas generator, characterized in that: These include, A rear cover assembly comprising: A rear cover housing having a hollow cavity extending along a central axis, a back cover heat insulation layer, which is attached to one side of the back cover shell and covers the hollow cavity, a rear cover ablation layer, which is attached to the side of the rear cover heat insulation layer opposite to the rear cover shell and forms a fuel channel in the hollow cavity, a rear cover throat liner embedded in the rear cover ablation layer to be flush with the fuel passage and perpendicular to the inner end surface of the rear cover ablation layer of the fuel passage, wherein the rear cover assembly is provided with a mounting cavity penetrating the rear cover shell, the rear cover insulation layer and the rear cover ablation layer; A servo actuator assembly comprising: A servo motor is fixed to the other side of the rear cover housing relative to the rear cover insulation layer, A host computer, which is connected to and controls the servo motor, a sliding disk shaft, one end of which is connected to the servo motor, and the other end of which is rotatably arranged through the mounting cavity and extends out of the rear cover ablation layer, the sliding disk shaft being parallel to the central axis; The sliding plate mover assembly comprises: The sliding plate reinforcement rib is fixed vertically to the other end of the sliding plate shaft. The sliding disc heat insulation layer wraps the sliding disc reinforcement ribs, a sliding disc ablation layer, which is at least attached to the outer surface of the sliding disc heat insulation layer; The sliding plate throat liner is embedded in the sliding plate heat insulation layer and is relative to the rear cover throat liner. As the sliding plate mover assembly rotates, the flow area between the sliding plate throat liner and the rear cover throat liner changes. The regulating device further comprises a dynamic sealing device connected to the sliding disk shaft in a rotational sealing manner, which comprises: A graphite sealing ring is provided on the side of the mounting cavity facing the inner end surface. a graphite retaining ring, which is arranged in the mounting cavity and located on a side of the graphite sealing ring away from the inner end surface; At least one bearing is disposed in the mounting cavity and is located on a side of the graphite retaining ring away from the graphite sealing ring. a bearing retaining ring, which abuts and locates the bearing, The bearing buckle cover is arranged on the other side of the installation cavity away from the inner end surface. The sliding disk shaft is rotatably penetrated by a graphite sealing ring, a graphite retaining ring, a bearing, a bearing retaining ring and a bearing buckle cover.

2. The sliding disc flow regulating device for a solid fuel gas generator according to claim 1, characterized in that: The rear cover ablation layer is provided with a sinking platform around the installation cavity, and the sliding plate mover assembly is provided with a protrusion that matches the sinking platform.

3. The sliding disc flow regulating device for a solid fuel gas generator according to claim 2, characterized in that: The protrusion has a hollow recess for accommodating the sliding disk shaft and the graphite sealing ring.

4. The sliding disc flow regulating device for a solid fuel gas generator according to claim 3, characterized in that: A rear cover sealing steel sleeve is provided between the sinking platform and the raised portion.

5. The sliding disc flow regulating device for a solid fuel gas generator according to claim 4, characterized in that: The bearing buckle cover has a flange end covering the rear cover shell, and the flange end is fixed to the rear cover shell via a bearing buckle cover screw. The expansion degree of the graphite sealing ring is adjusted by adjusting the bearing buckle cover screw.

6. The sliding disc flow regulating device for a solid fuel gas generator according to claim 5, characterized in that: The sliding disc sealing steel sleeve is arranged between the installation cavity and the dynamic sealing device, one end of the sliding disc sealing steel sleeve extends into the sliding disc insulation layer, and the other end abuts the flange end. The sliding disc sealing steel sleeve is clamped by the sliding disc sealing steel sleeve and the graphite sealing ring.

7. The sliding disc flow regulating device for a solid fuel gas generator according to claim 1, characterized in that: One end of the sliding plate shaft is a hexagonal end connected to the hexagonal hole of the servo motor, and the other end has a mounting platform with a diameter larger than the diameter of the sliding plate shaft. The side of the mounting platform away from the servo motor is fixedly connected to the sliding plate reinforcement rib via a pin, and the other side of the mounting platform abuts the graphite sealing ring.

8. The sliding disc flow regulating device for a solid fuel gas generator according to claim 1, characterized in that: The sliding plate reinforcement rib has a sleeve ring for sleeve-connecting the sliding plate throat bushing.

9. The operating method of the sliding disc flow regulating device of the solid fuel gas generator according to any one of claims 1 to 8, characterized in that: It includes the following steps, When the solid fuel gas generator is working, the servo motor starts to rotate according to the instruction of the host computer, and the servo motor drives the sliding plate shaft to rotate together; The sliding plate shaft drives the sliding plate mover assembly to rotate together, and the flow area of the sliding plate throat lining and the rear cover throat lining is changed during the rotation of the sliding plate mover assembly; When the gas flow needs to be increased, the sliding plate shaft drives the sliding plate mover assembly to rotate counterclockwise, the flow area between the sliding plate throat liner and the rear cover throat liner decreases, the combustion chamber pressure increases, the solid propellant burning rate increases, and the gas flow increases; when the gas flow needs to be reduced, the sliding plate shaft drives the sliding plate mover assembly to rotate clockwise, the flow area between the sliding plate throat liner and the rear cover throat liner increases, the combustion chamber pressure decreases, the solid propellant burning rate decreases, and the gas flow decreases.

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