Metal membrane storage tank and processing method of metal membrane

A processing method and diaphragm technology are applied in the processing field of metal diaphragm storage tanks and their metal diaphragms, which can solve the problems of potential safety hazards, easy shaking of propellants, inconvenience for long-term storage, etc., and achieve high stability and safety, and easy assembly. , The effect of simple processing method

Inactive Publication Date: 2019-04-05
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] However, at present, the diaphragms in the storage tanks are basically non-metallic diaphragms, which are not convenient for long-term storage or the propellant is prone to shaking during use, and there are certain potential safety hazards

Method used

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  • Metal membrane storage tank and processing method of metal membrane
  • Metal membrane storage tank and processing method of metal membrane
  • Metal membrane storage tank and processing method of metal membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The processing method of metal diaphragm of the present invention, comprises the steps:

[0048] 1) Material selection:

[0049] Conduct tensile test and component inspection on the unheated thick sheet, select the thick sheet that meets the design requirements, the elastic modulus of the selected thick sheet is E=69GPa, Poisson’s ratio μ=0.33, and the tensile strength is 76MPa , the yield strength is 28MPa, and the elongation is 39%. In this way, the metal diaphragm material chooses a thick sheet with a relatively small yield limit and good ductility, so as to ensure the weldability with the upper shell.

[0050] 2) Spinning:

[0051] The thick sheet material selected in step 1) is subjected to spinning processing to obtain a diaphragm blank of the required shape. The spinning processing includes hemispherical arc surface spinning processing and U-shaped arc surface spinning processing, wherein the top tight film 13, hemispherical Shaped mandrel 14 and U-shaped mandr...

Embodiment 2

[0059] The processing method of metal diaphragm of the present invention, comprises the steps:

[0060] 1) Material selection:

[0061] Conduct tensile test and component inspection on the unheated thick sheet, select the thick sheet that meets the design requirements, the elastic modulus E=82GPa, Poisson’s ratio μ=0.35, and the tensile strength of the selected thick sheet is 88MPa , Yield strength is 38MPa, elongation is 45%;

[0062] 2) Spinning:

[0063] The thick sheet material selected in step 1) is subjected to spinning processing to obtain a diaphragm blank of the desired shape. The spinning processing includes hemispherical arc surface spinning processing and U-shaped arc surface spinning processing, wherein the top tight film 13, hemispherical Shaped mandrel 14 and U-shaped mandrel 15 are designed and processed according to the shape of the metal diaphragm;

[0064] In the described hemispherical curved surface spinning process, the angle a=0° between the rotary wh...

Embodiment 3

[0071] The processing method of metal diaphragm of the present invention, comprises the steps:

[0072] 1) Material selection:

[0073] Conduct tensile test and component inspection on the thick sheet that has not been heat-treated, and select the thick sheet that meets the design requirements. The elastic modulus of the selected thick sheet is E=75GPa, Poisson’s ratio μ=0.34, and the tensile strength is 80MPa , the yield strength is 32MPa, and the elongation is 42%;

[0074] 2) Spinning:

[0075] The thick sheet material selected in step 1) is subjected to spinning processing to obtain a diaphragm blank of the desired shape. The spinning processing includes hemispherical arc surface spinning processing and U-shaped arc surface spinning processing, wherein the top tight film 13, hemispherical Shaped mandrel 14 and U-shaped mandrel 15 are designed and processed according to the shape of the metal diaphragm;

[0076] like Figure 4 As shown, in the described hemispherical ar...

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Abstract

The invention discloses a metal membrane storage tank and a processing method of a metal membrane. The metal membrane storage tank comprises an upper shell and a lower shell; a reinforcing ring is annularly arranged on the lower part of the outer wall of the upper shell, and the bottom end face of the reinforcing ring and the top end face of the lower shell are welded to form a hollow structure; the hemispherical metal membrane is arranged in an inner cavity of the upper shell, and a first cavity used for containing gas is defined between the upper surface of the metal membrane and the inner shell of the upper shell; a second cavity used for containing a propellant is defined between the lower surface of the metal membrane and the inner wall of the lower shell; the metal membrane is provided with a hemispherical cambered surface, and the opening end of the bottom of the hemispherical cambered surface is outwards bent and extends to form a U-shaped cambered surface; and the suspending end of the U-shaped cambered surface and the bottom end face of the upper shell are welded to be fixed. The metal membrane storage tank is compact in design structure and convenient to assemble, the metal membrane can be overturned normally in the using process, and hidden danger that in the using process, the metal membrane is broken, and thus an accident occurs is eradicated.

Description

technical field [0001] The invention relates to a metal diaphragm storage tank, in particular to a metal diaphragm storage tank and a processing method for the metal diaphragm. Background technique [0002] With the rapid development of liquid rocket engines, the requirements for propellant tanks are getting higher and higher. Diaphragm tanks have been widely used as propellant storage units for attitude control adjustment of monolithic liquid rocket engines. [0003] However, at present, the diaphragms in the storage tanks are basically non-metallic diaphragms, which are not convenient for long-term storage or the propellant is prone to shaking during use, and there are certain safety hazards. Therefore, it is urgent to design a safe and stable metal diaphragm storage tank, and to seek a reliable metal diaphragm processing method. Contents of the invention [0004] The purpose of the present invention is to provide a simple in structure, safe and reliable metal diaphrag...

Claims

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Application Information

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IPC IPC(8): B65D90/04B21D22/16B23P15/00
CPCB21D22/16B23P15/00B65D90/04
Inventor 周萌张文赖银燕任晗
Owner 湖北三江航天江北机械工程有限公司
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