High-pressure internal thread ball valve and machining process thereof

A technology of threaded ball and internal thread, which is applied in the field of high-pressure internal threaded ball valve and its processing technology, can solve the problems of harsh operating environment, achieve the effects of reducing gas content, changing the shape of graphite, and reducing the tendency of white mouth

Inactive Publication Date: 2018-12-21
JIANGSU HUATAI ELECTRIC POWER ELECTRONICS INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Threaded connection ball valves and butt welding connection ball valves are divided into integral type (one-piece type), two-stage type and three-stage type. The valve body casting adopts advanced technology imported from Taiwan, China, with reasonable structure and beautiful appearance. Reliable, easy to open and close. The valve stem adopts a bottom-mounted structure with reverse seal. When the valve cavity is abnormally pressurized, the valve stem will not be rushed out. Two-piece and three-piece ball valves are also connected by butt welding (BW) Socket welding (SW), and can be equipped with international standard ISO bracket platform and locking device, can be set to 90 ° switch positioning mechanism, according to the need to lock to prevent misuse, drive mode: manual, electric, pneumatic, but the existing ball valve The use environment is getting worse and worse, and the performance needs to be further improved to make it suitable for use in different working environments and expand its applicability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides a high-pressure internal threaded ball valve, including a valve body, a valve cap, a valve stem, a valve ball and a pressure cap. The main materials of the valve body, valve cap, valve stem, valve ball and pressure cap are the same, and the main materials are based on the quality The percentage meter consists of the following components:

[0048] Zn: 7%, Pb: 1%, Si: 2%, Ti: 0.12%, Fe: 0.1%, Al: 0.1%, C: 0.15%, B: 0.05%, Cr: 1.0%, Sb: 0.01%, Mn: 0.25%, Nb: 0.05%, V: 0.01%, Bi: 0.001%, S: 0.003%, P: 0.005%, rare earth elements: 0.01%, the balance is Cu and unavoidable impurities, the above components sum to 100%;

[0049] Rare earth elements include the following components by mass percentage:

[0050] Cerium: 10%, praseodymium: 11%, holmium: 7%, gadolinium: 3%, yttrium: 20%, the rest is lanthanum, and the sum of the above rare earth components is 100%.

[0051] The processing technology of the above-mentioned high-pressure internal thread ball...

Embodiment 2

[0071] This embodiment provides a high-pressure internal threaded ball valve, including a valve body, a valve cap, a valve stem, a valve ball and a pressure cap. The main materials of the valve body, valve cap, valve stem, valve ball and pressure cap are the same, and the main materials are based on the quality The percentage meter consists of the following components:

[0072] Zn: 9%, Pb: 3%, Si: 4%, Ti: 0.15%, Fe: 0.3%, Al: 0.3%, C: 0.19%, B: 0.07%, Cr: 2.0%, Sb: 0.03%, Mn: 0.28%, Nb: 0.07%, V: 0.03%, Bi: 0.002%, S: 0.005%, P: 0.006%, rare earth elements: 0.02%, the balance is Cu and unavoidable impurities, the above components sum to 100%;

[0073] Rare earth elements include the following components by mass percentage:

[0074] Cerium: 13%, praseodymium: 14%, holmium: 9%, gadolinium: 5%, yttrium: 22%, the rest is lanthanum, and the sum of the above rare earth components is 100%.

[0075] The processing technology of the above-mentioned high-pressure internal thread ball...

Embodiment 3

[0095] This embodiment provides a high-pressure internal threaded ball valve, including a valve body, a valve cap, a valve stem, a valve ball and a pressure cap. The main materials of the valve body, valve cap, valve stem, valve ball and pressure cap are the same, and the main materials are based on the quality The percentage meter consists of the following components:

[0096] Zn: 8%, Pb: 2%, Si: 3%, Ti: 0.13%, Fe: 0.2%, Al: 0.2%, C: 0.17%, B: 0.06%, Cr: 1.5%, Sb: 0.02%, Mn: 0.27%, Nb: 0.06%, V: 0.02%, Bi: 0.0015%, S: 0.004%, P: 0.0055%, rare earth elements: 0.015%, the balance is Cu and unavoidable impurities, the above components sum to 100%;

[0097] Rare earth elements include the following components by mass percentage:

[0098] Cerium: 11%, praseodymium: 12%, holmium: 8%, gadolinium: 4%, yttrium: 21%, the rest is lanthanum, and the sum of the above rare earth components is 100%.

[0099] The processing technology of the above-mentioned high-pressure internal thread b...

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PUM

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Abstract

The invention provides a high-pressure internal thread ball valve. The high-pressure internal thread ball valve comprises a valve body, a valve cap, a valve rod, a valve ball and a pressing cap, and is characterized in that the valve body, the valve cap, the valve rod, the valve ball and the pressing cap are made from the same main material, wherein the main material comprises, by mass, 7-9% of Zn, 1-3% of Pb, 2-4% of Si, 0.12 -0.15% of Ti, 0.1-0.3% of Fe, 0.1-0.3% of Al, 0.15-0.19% of C, 0.05-0.07% of B, 1.0-2.0% of Cr, 0.01-0.03% of Sb, 0.25-0.28% of Mn, 0.05-0.07% of Nb, 0.01-0.03% of V, 0.001-0.002% of Bi, 0.003-0.005% of S, 0.005-0.006% of P, 0.01-0.02% of rare earth elements, and the balance Cu and inevitable impurities, and the sum of the components is 100%. A machining process of the high-pressure internal thread ball valve is simple and easy to implement, and low in cost, and the machined ball valve has good high-temperature resistance and corrosion resistance performance, andis long in service life.

Description

technical field [0001] The invention relates to a ball valve and its processing technology, in particular to a high-pressure internal thread ball valve and its processing technology. Background technique [0002] A valve is a control component in a fluid delivery system, with functions such as cut-off, regulation, flow diversion, reverse flow prevention, pressure stabilization, diversion or overflow pressure relief; valves used in fluid control systems range from the simplest cut-off valve to extremely complex The various valves used in the automatic control system have a wide variety of varieties and specifications. The valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. According to the material, valves are also divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome molybdenum steel valves, chrome molybdenum vanadiu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C21D1/18C21D9/00F16K27/06F16K5/06C09D133/00C09D171/12C09D5/10C09D7/61
CPCC09D5/10C09D7/61C09D7/70C09D133/00C21D1/18C21D9/0068C22C9/04F16K5/0657F16K27/067C08L71/12C08K7/00C08K3/40C08K3/08C08K7/08C08K3/346C08K13/04
Inventor 陈龙陆超
Owner JIANGSU HUATAI ELECTRIC POWER ELECTRONICS INSTR
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