Electric conical valve type gas flow regulator for solid rocket ramjets

A gas flow regulation, ramjet technology, applied in rocket engine devices, machines/engines, jet propulsion devices, etc., can solve the problems of difficult to achieve precise control, inability to achieve precise control, gas leakage and other problems, and achieve a compact structure. , Simple structure, the effect of increasing the strength and stiffness of the valve head

CN103410632BActive Publication Date: 2015-06-17NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-06-17

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Abstract

The invention discloses an electric conical valve type gas flow regulator for solid rocket ramjets. A drive motor is fixed to a connecting box. One end of a coupling is fixedly connected with a shaft of a motor, and a slider is disposed in a slide hole in the other end of the coupling. The slider is fixedly connected with a valve stem through a tension and pressure sensor. A drive nut is fixedly connected to a solid gas generator. The valve stem passes the drive nut and in threaded fit with the drive nut. A conical valve head is fixedly connected with the valve stem in a threaded manner and extends into a spray pipe of the gas generator. The gas generator is in an inner shell structure which is hollow. The valve stem is fitted in the inner shell, and a bushing is fitted between the valve stem and the gas generator. One end of the valve stem, close to the conical valve head, is provided with a peripheral circular groove, and a moving seal is disposed in the circular groove. A pressure sensor is mounted on the rear head of the gas generator. The electric conical valve type gas flow regulator for solid rocket ramjets is simple in structure, small in size, reliable in operation, low in ablation effect, low in cost, and accurately controllable.
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Description

technical field

[0001] The invention belongs to the field of solid rocket ramjet engines, in particular to an electric cone valve type solid rocket ramjet gas flow regulating device. Background technique

[0002] The solid rocket ramjet has the advantages of both ramjet and rocket engines, and has the advantages of high specific impulse, small size, light weight, compact structure, reliable operation, and low cost. In order to ensure that the engine has the best working performance and good thrust adjustment capability, the gas flow of the solid rocket ramjet should be adjusted. At present, there are four main schemes for gas flow regulation: fixed flow type, choke type, non-choke type and swirl valve type. Flow regulating valves usually adopt a variety of configurations such as plunger spool valve, rotary cam valve, rotary disc valve, and cone valve. The existence of the needle valve cone improves the uniformity of gas velocity, helps the diffusion of gas, improves the co...

Examples

Embodiment

[0025] An electric cone valve type solid rocket ramjet gas flow regulating device, the driving motor 1 is fixed on the connecting box 2, one end of the coupling 3 is fixedly connected with the shaft of the motor 1, and a square sliding block is installed in the square sliding hole at the other end , the square slider is fixedly connected with the valve stem 7 through the pull pressure sensor 5, the transmission nut 6 is fixedly connected with the solid gas generator 10, the valve stem 7 passes through the transmission nut 6, and is screwed with the transmission nut 6, and the conical valve head 11 It is fixedly connected with the valve stem 7 through threads, and extends into the nozzle pipe of the gas generator 10. The gas generator 10 is provided with an inner shell structure, the inner shell is hollow, and the inner shell is equipped with the valve stem 7. The connection between the valve stem 7 and the gas generator 10 There is a bushing 8 in between, the bushing 8 is a cyl...