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High-strength titanium alloy steam turbine blade

A technology of steam turbine blades and titanium alloys, which is applied to the supporting elements of blades, mechanical equipment, engine elements, etc., can solve problems affecting component life, failure, and low-cycle fatigue of metal materials, and achieves improved quality, low cost, and construction cycle. short effect

Inactive Publication Date: 2018-10-09
南京赛达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, during the operation of the steam turbine, it is subjected to multiple starts and stops, large changes in output load, and strong periodic changes in steam temperature, which will cause low-cycle fatigue of metal materials and lead to failure. Both creep and low-cycle fatigue will affect the life of components. Moreover, there is a nonlinear coupling between the two. It is still difficult for the existing blades to meet the ever-increasing performance requirements only by the application of new blade materials. Various heat treatment technologies must be applied to the manufacture of steam turbine blades in order to achieve the blades. Requirements for high efficiency, high precision and long life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides a high-strength titanium alloy steam turbine blade, the surface of the steam turbine blade is also provided with a protective layer, and the protective layer includes the following components in parts by mass:

[0040] Modified EPDM rubber: 10 parts, methylphenyl silicone resin: 15 parts, silicone modified epoxy resin: 8 parts, nano-SiC powder: 5 parts, pigment and filler: 13 parts, dispersant: 3 parts , coupling agent: 10 parts, curing agent: 13 parts, defoamer: 7 parts, anti-mold fungicide: 1 part;

[0041] The pigment and filler is a mixture of glass flakes and titanium dioxide, mixed according to the mass ratio of glass flakes: titanium dioxide = 2:1; the dispersant is sodium tetrapolyphosphate; the coupling agent is silane coupling agent; the curing agent is diethylene tri Amine; the defoamer is Tego810 defoamer; the antifungal fungicide is a mixture of propiconazole and 3-iodo-2-propargyl butyl carbamate in equal proportions.

[0042] The...

Embodiment 2

[0062] This embodiment provides a high-strength titanium alloy steam turbine blade, the surface of the steam turbine blade is also provided with a protective layer, and the protective layer includes the following components in parts by mass:

[0063] Modified EPDM rubber: 15 parts, methylphenyl silicone resin: 20 parts, silicone modified epoxy resin: 11 parts, nano-SiC powder: 7 parts, pigment and filler: 15 parts, dispersant: 5 parts , coupling agent: 15 parts, curing agent: 15 parts, defoamer: 9 parts, anti-mold fungicide: 3 parts;

[0064] The pigment and filler are a mixture of glass flakes and titanium dioxide, mixed according to the mass ratio of glass flakes: titanium dioxide = 2:1; the dispersant is sodium hexametaphosphate; the coupling agent is a silane coupling agent; the curing agent is polyamide; The defoamer is Tego 810 defoamer; the antifungal fungicide is a mixture of tebuconazole and 3-iodo-2-propargyl butyl carbamate in equal proportions.

[0065] The concre...

Embodiment 3

[0085] This embodiment provides a high-strength titanium alloy steam turbine blade, the surface of the steam turbine blade is also provided with a protective layer, and the protective layer includes the following components in parts by mass:

[0086] Modified EPDM rubber: 13 parts, methylphenyl silicone resin: 18 parts, silicone modified epoxy resin: 9 parts, nano-SiC powder: 8 parts, pigment and filler: 14 parts, dispersant: 4 parts , coupling agent: 12 parts, curing agent: 14 parts, defoamer: 8 parts, anti-mold fungicide: 2 parts;

[0087] The pigment and filler is a mixture of glass flakes and titanium dioxide, mixed according to the mass ratio of glass flakes: titanium dioxide = 2:1; the dispersant is sodium tetrapolyphosphate; the coupling agent is silane coupling agent; the curing agent is polyamide; The defoamer is Tego 810 defoamer; the antifungal fungicide is a mixture of propiconazole and 3-iodo-2-propargyl butyl carbamate in equal proportions.

[0088] The concrete...

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Abstract

The invention discloses a high-strength titanium alloy steam turbine blade. The surface of the steam turbine blade is further provided with a protection layer, and the protection layer is prepared from, by mass, 10-15 parts of modified ethylene-propylene-diene monomer rubber, 15-20 parts of methyl phenyl silicone resin, 8-11 parts of organosilicon-modified epoxy resin, 5-7 parts of nanometer SiC powder, 13-15 parts of filler and pigment, 3-5 parts of dispersing agent, 10-15 parts of coupling agent, 13-15 parts of curing agent, 7-9 parts of defoaming agent and 1-3 parts of anti-mildew bactericide. The high-strength titanium alloy steam turbine blade has good strength, and is good in corrosion resistance, simple in preparation process, low in cost and long in service life.

Description

technical field [0001] The invention relates to a steam turbine blade, in particular to a high-strength titanium alloy steam turbine blade. Background technique [0002] The steam turbine is one of the three main engines of the thermal power plant. It is responsible for the main task of converting heat energy into mechanical energy. Its operation directly affects the efficiency of the heat engine and the safety of the unit. [0003] The steam turbine is a rotary fluid power machine, which directly transforms the heat energy of steam or gas into mechanical energy, and the blade is the key part of the steam turbine, and it is also one of the most precise and important parts. The blade of the steam turbine The working environment is complex and changeable. Under extremely harsh conditions, it can withstand the joint action of high temperature, high pressure, huge centrifugal force, steam force, steam excitation force, corrosion and vibration, and water droplet erosion in the we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02C22F1/18C21D9/00F01D5/28C09D183/04C09D7/61C09D7/63C09D7/65C09D5/14C09D5/08C09D7/62
CPCC08K2003/2241C08K2201/011C09D5/08C09D5/14C09D183/04C21D9/0068C22C1/02C22C14/00C22F1/183C09D7/61C09D7/62C09D7/63C09D7/65F01D5/28F01D5/288C08L23/16C08K13/06C08K3/34C08K3/40C08K3/22
Inventor 刘达王河平宗国翼
Owner 南京赛达科技有限公司
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