Adjustable coaxial double-slotting bolt type inspirator

An injector and plug-type technology, which is applied in the field of liquid rocket engines, can solve problems such as atomization, poor mixing, poor propellant mixing, and reduced combustion efficiency, and achieve good mixing, consistent mixing state, and improved combustion efficiency.

Active Publication Date: 2014-12-10
NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The atomization and mixing of the propellant in the annular seam structure is poor, and the efficiency is low
The slotted structure of the central element enhances the atomization and mixing effect of the propellant, and the efficiency is improved, but because the central path moves up and down on the lower end surface of the needle valve to block the slot on

Method used

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  • Adjustable coaxial double-slotting bolt type inspirator
  • Adjustable coaxial double-slotting bolt type inspirator
  • Adjustable coaxial double-slotting bolt type inspirator

Examples

Experimental program
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Embodiment Construction

[0019] see Figure 1-2 , an adjustable coaxial double-slotted pin injector, including a central cylinder 4, a central rod 8 arranged inside the central cylinder 4 and connected by a nut, and a housing 1 surrounding the outer ring of the central cylinder 4; the central cylinder 4 There is a flange on the upper end, and the flange is fixedly connected to the housing 1 through the pressure ring 5; a needle valve 2 is also arranged between the housing 1 and the central cylinder 4; the upper end of the needle valve 2 is connected to the central cylinder by the spring 3, the gasket ring 6 4 are connected, the lower conical surface and the inner wall of the housing 1 constitute the outer ring nozzle 10; the lower end of the central cylinder 4 and the needle valve 2 are provided with corresponding slots 9, and the slots 9 are in common with the channel formed by the central rod 8 and the inner wall of the central cylinder. It forms a central channel; the central tube 4 and the slots 9...

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PUM

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Abstract

The invention relates to an adjustable coaxial double-slotting bolt type inspirator. A needle valve is also arranged between a shell and a center tube, the lower end of the center tube is provided with center tube slots, the lower end of the needle valve is provided with needle valve slots corresponding to the center tube, a passage is formed between a center rod and the inner wall of the center tube, and the center tube slots, the needle valve slots and the passage formed by the center rod and the inner wall of the center tube jointly form a center path nozzle. The invention provides the adjustable coaxial double-slotting bolt type inspirator which has the advantages that excellent mixing of a propellant is ensured, the solid boundary of jet flow is increased, and the combustion efficiency is improved.

Description

technical field [0001] The invention belongs to the field of liquid rocket engines, and relates to a coaxial pin injector, in particular to an adjustable coaxial double-slotted pin injector, which is used for variable thrust engines and fixed thrust engines, and is especially suitable for variable thrust engines and fixed thrust engines. thrust engine. Background technique [0002] For traditional fixed-area injectors, such as small-hole impingement type and coaxial centrifugal type, etc., when the propellant flow rate changes, the injection pressure drop of the injector will change sharply. Data show that engines using fixed-area injectors can achieve a thrust variable ratio of up to 2.5:1, so they cannot be applied to variable-thrust engines with large thrust changes. [0003] Existing adjustable slug injectors generally include an annular slot structure and a central element slotted structure. The atomization and mixing of the propellant in the annular gap structure is ...

Claims

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Application Information

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IPC IPC(8): F02K9/52
Inventor 高坤林革凌前程章荣军高云鹏陈炜杨宝庆刘新华李军丰雪平孙永奇
Owner NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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