Assembling and testing method for two-way sealing bolt type injector

A test method and injector technology, which is applied to jet propulsion devices, machines/engines, rocket engine devices, etc., can solve problems such as reduced reliability, failure of surface shutdown function, irregular test process, etc., to achieve high reliability, The effect of high pass rate and complete test process

Active Publication Date: 2022-07-08
XIAN AEROSPACE PROPULSION INST
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the assembly and testing process of the existing plug-type injector is not standardized, resulting in the failure of the surface shutdown function and the reduction of reliability, and to provide a method for assembly and testing of the double-way sealing plug-type injector

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  • Assembling and testing method for two-way sealing bolt type injector
  • Assembling and testing method for two-way sealing bolt type injector
  • Assembling and testing method for two-way sealing bolt type injector

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Embodiment Construction

[0046] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0047] In the development of the bolted injector, the movement flexibility of the movable needle valve, one of the key components, and the reliability of the two-way sealing structure are extremely important for the operation of the engine. The assembly steps, methods and processes of the spigot injector, especially the dual-road shut-off structure injector, are critical. In order to standardize and improve the assembly reliability of the injector, the present invention provides a two-way sealing plug injector assembly test method, which ensures the movement characteristics (flexibility and response), sealing characteris...

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Abstract

The invention provides an assembly test method for a two-way sealing bolt type injector, and mainly solves the problems that the assembly test process of an existing bolt type injector is not standard, so that the surface shutdown function fails, and the reliability is reduced. According to the two-way sealing bolt type injector assembling and testing method, assembling and testing of the face shutdown bolt type injector can be completed normatively and rapidly, it is guaranteed that the motion characteristic, the sealing characteristic and the injection characteristic of the face shutdown bolt type injector meet the design requirements, and assembling testing qualification and delivery use of the injector are rapidly achieved.

Description

technical field [0001] The invention belongs to the field of liquid rocket engine injectors, and in particular relates to a method for assembling and testing a dual-channel sealed bolt type injector. Background technique [0002] Liquid rocket engines are the main power devices for launch vehicles and spacecraft. Bolt-injector engines are widely used in the main propulsion system of launch vehicles. The two-way propellant of the spigot injector engine enters the combustion chamber through different flow channels in the spigot injector to achieve combustion. In order to meet the fast response requirements of liquid rocket spigot engines, the spigot injector face shutdown technology (sealing the propellant on the injection face) is an effective solution to achieve fast engine response. [0003] The assembly and testing process of the plug injector determines the reliability of its movement and sealing, especially the machining accuracy of parts and assembly accuracy. Howeve...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/96F02K9/52
CPCF02K9/96F02K9/52Y02E30/30
Inventor 凌前程王春民王化余李龙飞宋大亮刘新华高坤卞香港
Owner XIAN AEROSPACE PROPULSION INST
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