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Bonding method for jet pipe and flexible plug cover of solid rocket engine and sealing tool

A technology for engine nozzles and solid rockets, applied in the direction of pipes/pipe joints/pipes, pipe elements, connecting components, etc., can solve the problems of uneven pressure on the bonding profile, affecting production efficiency, and line contact pressure, etc. The effect of improving the bonding quality, low price and simple method

Active Publication Date: 2017-01-04
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the bonding surface of the flexible plug and the throat liner of the nozzle is a curved surface, in the bonding method of the flexible plug in the prior art, it is difficult to completely cooperate with the press-fitting surface of the pressing block and the flexible plug, and the bonding surface is affected. The direction of the force is single, and the pressure of the bonding surface is uneven, which is easy to produce line contact pressure, which leads to a low pass rate of the bonding between the flexible plug and the throat liner of the nozzle, and frequent air leakage, which seriously affects the production efficiency

Method used

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  • Bonding method for jet pipe and flexible plug cover of solid rocket engine and sealing tool
  • Bonding method for jet pipe and flexible plug cover of solid rocket engine and sealing tool
  • Bonding method for jet pipe and flexible plug cover of solid rocket engine and sealing tool

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, so as to facilitate a clearer understanding of the present invention, but they do not limit the present invention.

[0027] The sealing frock adopted in the following examples, combined with figure 2 As shown, including the sealing plate 1, the base 2, the pressing plate 3, the pressing joint 4, the first pressure gauge 5 and the second pressure gauge 6, the minimum thickness of the sealing plate 1 should meet the strength requirements of the pressurized pressure in subsequent use; The middle part of the plate 1 is provided with a support rod connection hole, the base 2 includes a bottom plate 2.2 and a support rod 2.1 connected to the bottom plate 2.2, and the upper end 2.3 of the support rod 2.1 is inserted into the support rod connection hole in the middle part of the sealing plate 1 until it extends Into the middle through hole of ...

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Abstract

The invention discloses a bonding method for a jet pipe and a flexible plug cover of a solid rocket engine, and a sealing tool. The bonding method includes the steps that after the flexible plug cover and a jet pipe throat lining are bonded in advance, the sealing tool is mounted on the jet pipe, and the flexible plug cover and the sealing tool are matched to form a first sealed space area; and the first sealed space area is pressurized, the external molded surface of the bonding surface between the flexible plug cover and the jet pipe throat lining is pressurized in an air-pressure mode, and finally, pressure-maintaining solidification is carried out. By utilizing the non-directionality of air pressure, air pressure is applied to the flexible plug cover and acts on the external molded surface of the bonding surface, all points on the bonding surface are subjected to normal-direction stressing, surface-contact uniform stressing of the bonding surface is achieved, and therefore the bonding quality is improved; and in addition, the method is simple, operation is convenient, the period is short, the cost is low, and the bonding method is especially suitable for bonding of the jet pipe and the flexible plug cover of the large-diameter solid rocket engine.

Description

technical field [0001] The invention belongs to the technical field of forming a solid rocket motor nozzle, and in particular relates to a bonding method and a sealing tool for a solid rocket motor nozzle and a flexible blocking cover. Background technique [0002] The nozzle is an important part of the solid rocket motor. When assembling the nozzle of the solid rocket motor, the flexible plug 11 and the throat liner 10 of the nozzle need to be bonded and solidified, and then the air tightness test is carried out. The bonding method of flexible plugging cap and nozzle throat liner in the prior art, such as figure 1 As shown, the pressure block 9 is used to cooperate with the bonding surface of the flexible plug, and a weight is added to the pressure block 9 or a manual press is used to pressurize it, and then it is cured at room temperature. [0003] Since the bonding surface of the flexible plug and the throat liner of the nozzle is a curved surface, in the bonding method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/115F16B11/00
CPCF16B11/002F16B11/006F16L55/115
Inventor 刘亮初敬生余峰王明坤吴萍
Owner 湖北三江航天江北机械工程有限公司
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