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High temperature resistant corrosion resistant high-strength plumbago------carbon composite valve

A carbon composite material, carbon-carbon composite material technology, used in sliding valves, valve details, valve devices, etc.

Inactive Publication Date: 2011-01-12
仇晓丰 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the article does not mention that carbon-carbon composite materials and graphite are used for valve equipment, and the preparation method of carbon-carbon composite materials in this article is also different from the preparation method in the present invention

Method used

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  • High temperature resistant corrosion resistant high-strength plumbago------carbon composite valve
  • High temperature resistant corrosion resistant high-strength plumbago------carbon composite valve
  • High temperature resistant corrosion resistant high-strength plumbago------carbon composite valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] refer to figure 1 The shut-off valve made according to the technical scheme of the present invention comprises a high-strength fixing nut 1, a valve seat 2, a valve body through hole 3, a sealing briquetting block 4, a sealing ring 5, a valve stem spool 6, and a high-strength fixing screw rod 7, wherein The valve seat is made of graphite, the valve stem and valve core are integrated and made of carbon-carbon composite material, the above-mentioned sealing briquetting block is made of carbon-carbon composite material, and the above-mentioned sealing ring is made of carbon fiber composite material.

[0038] The graphite used to make the valve seat is graphite with a specific gravity of 1.72 and a maximum particle size of 0.2 mm.

[0039] The tensile strength of the carbon-carbon composite material is 160MPa at 200°C, the compressive strength is 144MPA, and the specific gravity is 1.9g / cm 3 .

[0040] It is prepared by the following methods: (1) carbon fiber is three-di...

Embodiment 2

[0046] refer to figure 2 The ball valve made according to the technical scheme of the present invention comprises a high-strength fixed nut 1, a valve seat 2, a valve body through hole 3, a sealing briquetting block 4, a sealing ring 5, a valve stem spool 6, and a high-strength fixed screw rod 7, wherein the valve The seat is made of graphite, and the valve stem and valve core are integrated and made of carbon-carbon composite material. The above-mentioned sealing pressing block is made of carbon-carbon composite material, and the above-mentioned sealing ring is made of carbon fiber composite material.

[0047] The graphite used to make the valve seat can be graphite with a specific gravity of 1.80 and a maximum particle size of 0.1 mm, and the obtained graphite is processed by the following method.

[0048] The processing method is:

[0049] (1) Impregnation process: put the above-mentioned graphite into an impregnation kettle filled with phenolic resin or polytetrafluoroe...

Embodiment 3

[0059] refer to image 3 The ball valve made according to the technical scheme of the present invention comprises a valve seat 1, a valve body through hole 2, a valve stem spool 3, a sealing ring 4, and a sealing briquetting block 5, wherein the valve seat is made of graphite, and the valve stem spool is One piece, made of carbon-carbon composite material. The above-mentioned sealing pressing block is made of carbon-carbon composite material, and the above-mentioned sealing ring is made of carbon fiber composite material.

[0060] The graphite used to make the valve seat can be graphite with a specific gravity of 1.85 and a maximum particle size of 0.15 mm, and the following method is used to process the obtained graphite.

[0061] The processing method is:

[0062] (1) Impregnation process: put the above-mentioned graphite into an impregnation kettle filled with phenolic resin or polytetrafluoroethylene dispersion liquid, vacuumize, and the vacuum degree reaches -0.12MPa, l...

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Abstract

The invention relates to a whole carbon valve with high temperature and corrosion resistance, comprising a valve stem, a valve core, a sealing ring, a sealing press piece and a valve base, which is characterized in that the valve stem and the valve core are made from composite material of carbon and carbon; the valve base is made from graphite. Specific gravity of the graphite is 1.72 to 2.00g / cm<3>, and the largest grain is smaller than 0.2mm. The invention also relates to a making method for the composite material of carbon and carbon used in the valve stem and the valve core and the graphite used in the valve base. The whole carbon valve has the advantages of high temperature and corrosion resistance.

Description

technical field [0001] The invention relates to a high-temperature-resistant and corrosion-resistant high-strength graphite-carbon composite material valve. Background technique [0002] The usual valves used under high temperature conditions are metal poppet valves, and most of the metal poppet valves are made by casting, forging or metal blank pressing machines. These valves are heavy and by their nature not resistant to high temperatures. [0003] Another inherent problem with metal poppet valves is that they tend to lose strength as the temperature increases, and under a certain stress, the amount of deformation increases with time, that is, there is a large amount of deformation in a short period of time. deformation. [0004] Usually these valves adopt rotary, sleeve and disc designs to overcome the high temperature resistance of metal poppet valves. However, these designs require tight fit between the parts to achieve the purpose of sealing the valve. However, as t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/04F16K5/06F16K3/00F16K27/00
Inventor 仇晓丰李贺军李克智
Owner 仇晓丰