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High-strength valve for steam

A high-strength, valve technology, applied in valve details, valve device, valve shell structure, etc., can solve problems such as hindering the stable and long-term operation of the production system, reducing system pressure, destroying the sealing system, etc., to achieve simple and effective leakage problems, improve airtightness performance, effect of increasing corrosion resistance and high temperature resistance

Inactive Publication Date: 2016-04-20
YANCHENG FAIR TRUEMARK VALVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Valves are widely used in daily life. The existing valves are generally metal valves. Because valves play a vital role in industrial production, they need to be replaced or repaired regularly. However, in industrial production, valve leakage often leads to the entire production stop, causing huge losses, and hindering the stable long-term operation of the production system. The weakest link in the valve is the valve core. Because the valve core has been in harsh working conditions for a long time, the corrosion is serious, thus destroying the entire sealing system. There are many types of liquids. Once leaked, it will not only cause environmental pollution, but also cause the pressure of the entire system to drop rapidly. It must be shut down for maintenance, and due to the long maintenance time, when encountering corrosive liquids, it must be cleaned before replacement. Loss serious

Method used

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  • High-strength valve for steam
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  • High-strength valve for steam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A high-strength valve for steam provided in this embodiment includes a main valve body 1, and a valve flange 2 for controlling the on-off of the main valve body 1 is provided on the upper end of the main valve body 1. A first mounting flange 3 is provided below the flange 2, a positioning boss 4 extends upward on the upper end of the first mounting flange 3, a sealing sleeve 5 is provided above the first mounting flange 3, and a sealing sleeve 5 is provided at the lower end of the sealing sleeve 5. The second mounting flange 6 matched with the first mounting flange 3 is also provided with a sealing ring 7 between the first mounting flange 3 and the second mounting flange 6, and the positioning boss 4 and the inner hole of the sealing sleeve 5 Sliding fit, and the first mounting flange 3 and the second mounting flange 6 are provided with corresponding connecting holes 8, on the first mounting flange 3 there is an installation groove 10 for installing the sealing ring 7, a...

Embodiment 2

[0051] This embodiment provides a high-strength valve for steam, and the high-strength valve for steam in this embodiment has the same structure as that in Embodiment 1;

[0052] Among them, the sealing sleeve 5, the main valve body 1, and the valve flange 2 are covered with a layer of high-strength metal coating. The components of the high-strength metal coating are: carbon: 0.12%, boron: 0.26%, Chromium: 14.47%, Titanium: 0.24%, Magnesium: 2.52%, Nickel: 5.54%, Manganese: 2.53%, Niobium: 0.22%, Cobalt: 1.42%, Copper: 0.21%, Tungsten: 0.21%, Molybdenum: 0.64%, Zinc: 3.22%, Samarium: 4.63%, Neodymium: 2.24%, Promethium: 0.62%, Dysprosium: 0.21%, Thulium: 4.23%, Auxiliary: 3.42%, and the balance is iron;

[0053] The components of the additives are calculated in parts by weight: forsterite: 5 parts, cerium oxide: 12 parts, titanium dioxide: 17 parts, graphite powder: 14 parts, nickel powder: 13 parts, silicon carbide: 11 parts, ceramic powder : 7 copies;

[0054] The preparat...

Embodiment 3

[0062] This embodiment provides a high-strength valve for steam, and the high-strength valve for steam in this embodiment has the same structure as that in Embodiment 1;

[0063] Among them, the surface of the sealing sleeve 5, the main valve body 1, and the valve flange 2 is coated with a layer of high-strength metal coating, and the components of the high-strength metal coating are by mass percentage: The components of the high-strength metal coating are by mass The percentages are: Carbon: 0.15%, Boron: 0.28%, Chromium: 14.49%, Titanium: 0.53%, Magnesium: 2.55%, Nickel: 5.58%, Manganese: 2.82%, Niobium: 0.24%, Cobalt: 1.45%, Copper: 0.23%, Tungsten: 0.23%, Molybdenum: 0.68%, Zinc: 3.24%, Samarium: 4.66%, Neodymium: 2.28%, Promethium: 0.65%, Dysprosium: 0.24%, Thulium: 4.26%, Additives: 3.45%, Yu amount of iron;

[0064] The components of the additives are calculated in parts by weight: forsterite: 8 parts, cerium oxide: 14 parts, titanium dioxide: 19 parts, graphite powder: ...

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Abstract

The invention discloses a high-strength valve for steam. The high-strength valve comprises a main valve body, and the upper end of the main valve body is provided with a valve flange used for controlling connection and disconnection of the main valve body; the portion, located under the valve flange, of the main valve body is provided with a first installing flange, the upper end face of the first installing flange is provided with a positioning boss in an upwards extending mode, a seal sleeve is arranged over the first installing flange, the lower end of the sealing sleeve is provided with a second installing flange matched with the first installing flange, and a seal ring is arranged between the first installing flange and the second installing flange; the positioning boss is slidably matched with an inner hole of the seal sleeve, the first installing flange and the second installing flange are both provided with corresponding connecting holes, and the first installing flange is provided with an installing groove used for installing the seal ring. According to the high-strength valve for the steam, the structure is simple, the cost is low, the safety and reliability are achieved, the service life is long, stopping is not needed for replacing, only a secondary seal structure needs to be utilized to seal the overall valve again, therefore, the production persistence and stability are facilitated, and the production efficiency is improved.

Description

technical field [0001] The present invention relates to valves, in particular to a high-strength valve for steam. Background technique [0002] Valves are widely used in daily life. The existing valves are generally metal valves. Because valves play a vital role in industrial production, they need to be replaced or repaired regularly. However, in industrial production, valve leakage often leads to the entire production stop, causing huge losses, and hindering the stable long-term operation of the production system. The weakest link in the valve is the valve core. Because the valve core has been in harsh working conditions for a long time, the corrosion is serious, thus destroying the entire sealing system. There are many types of liquids. Once leaked, it will not only cause environmental pollution, but also cause the pressure of the entire system to drop rapidly. It must be shut down for maintenance, and due to the long maintenance time, when encountering corrosive liquids, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/04C22C38/58C22C38/54C22C38/50C22C38/48C22C38/52C22C38/42C22C38/44F16K27/00
CPCC23C24/04C22C38/002C22C38/005C22C38/42C22C38/44C22C38/48C22C38/50C22C38/52C22C38/54C22C38/58F16K27/00
Inventor 董春景
Owner YANCHENG FAIR TRUEMARK VALVES
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