fuel spray nozzle

A fuel spray and nozzle technology, applied in turbine/propulsion fuel delivery system, fuel control of turbine/propulsion unit, combustion chamber, etc., can solve the problem of high maintenance cost of replacement tip

Active Publication Date: 2016-12-28
MITSUBISHI POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] With the existing nozzle tip burners as described above, there is a risk of coking of the nozzle tip 39, so there is a problem of high maintenance costs such as replacing the tip

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The fuel spray nozzle of Example 1 of the present invention will be described with reference to the drawings. figure 1 It is a schematic cross-sectional view for explaining the fuel spray nozzle of Example 1 of the present invention. figure 2 Yes figure 1A-A sectional view of . image 3 Yes figure 1 Enlarged view of part E in . Figure 4 Yes image 3 B-B arrow view. in addition, figure 1 , 3 The dashed arrow marks in , indicate the flow of additives, and the dashed arrow marks indicate the flow of liquid fuel.

[0061] The fuel spray nozzle 11a sprays liquid fuel and additives in the combustor of the gas turbine not shown, such as Figures 1 to 4 As shown, the rotary vane 12 , the additive flow path 14 , the liquid fuel flow path 15 , the additive pressure equalization space 16 , the liquid fuel pressure equalization space 17 , the first additive injection hole 18 a , and the liquid fuel injection hole 19 are provided.

[0062] The liquid fuel flow path 15...

Embodiment 2

[0079] The fuel spray nozzle of Example 2 of the present invention will be described with reference to the drawings. Figure 5 It is an enlarged schematic view of a part of the fuel spray nozzle of Example 2 of the present invention. Image 6 Yes Figure 5 C-C arrow view. in addition, Figure 5 The dashed-dotted arrow marks in the arrows show the flow of the liquid fuel, and the dotted portion shows the injected additive.

[0080] like Figure 5 , 6 As shown, the fuel spray nozzle 11b includes a rotary vane 12, a second additive injection hole 18b, a liquid fuel injection hole 19, an additive flow path (not shown), a liquid fuel flow path (not shown), and a space for additive pressure equalization (not shown). Not shown) and a space for liquid fuel pressure equalization (not shown). In addition, the rotary vane 12 , the liquid fuel injection hole 19 , the additive flow path, the liquid fuel flow path, the additive pressure equalization space, and the liquid fuel pressure...

Embodiment 3

[0088] The fuel spray nozzle of Example 3 of the present invention will be described with reference to the drawings. Figure 7 It is an enlarged schematic view of a part of the fuel spray nozzle of Example 3 of the present invention. Figure 8 Yes Figure 7 D-D arrow view. in addition, Figure 7 The dashed-dotted arrow marks in the arrows show the flow of the liquid fuel, and the dotted portion shows the injected additive.

[0089] like Figure 7 , 8 As shown, the fuel spray nozzle 11c includes a rotary vane 12, a third additive injection hole 18c, a liquid fuel injection hole 19, an additive flow path (not shown), a liquid fuel flow path (not shown), and a space for additive pressure equalization (not shown). Not shown) and a space for liquid fuel pressure equalization (not shown). In addition, the rotary vane 12, the liquid fuel injection hole 19, the additive flow path, the liquid fuel flow path, the additive pressure equalization space, and the liquid fuel pressure e...

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PUM

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Abstract

A fuel spray nozzle provided with: a liquid fuel channel (15), which is a channel for liquid fuel; a liquid fuel injection hole (19), which is a hole for communicating the liquid fuel channel (15) and the inside of a combustion burner, and injecting the liquid fuel into the combustion burner; an additive channel (14), which is a channel for an additive; and an additive injection hole (18a), which is a hole for communicating the additive channel (14) and the inside of the combustion burner, and injecting the additive into the combustion burner at an angle at which the additive collides with the liquid fuel injected from the liquid fuel injection hole (19).

Description

technical field [0001] The present invention relates to a fuel spray nozzle in a combustor of a gas turbine. Background technique [0002] In the combustor of a gas turbine, as a low NOx technology, it is required to spray liquid fuel and distribute the fuel concentration uniformly. [0003] In addition, by mixing an additive such as water with the liquid fuel, the amount of NOx emission can be suppressed due to the flame temperature reduction or reduction effect. Furthermore, the more the mixing is promoted, the more the NOx emission amount can be suppressed. In addition, by mixing air at the same time in the mixing process, it is possible to further suppress the NOx emission amount. [0004] For spraying of liquid fuels and additives, compressed spray air (blast air) or nozzle tips can be used. [0005] Figure 9 It is a schematic arrow view for demonstrating an example of the inside of the conventional blower type burner. The arrow marks in the figure indicate the flo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/28F02C3/24F02C3/30F02C9/40F23R3/00F23R3/14
CPCF23C2203/30F23C2900/07021F23D11/383F23R3/14F23R3/286F02C7/22
Inventor 梶村周平齐藤圭司郎井上庆宫内宏太郎
Owner MITSUBISHI POWER LTD
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