Water injection pipeline system for adjusting combustion of gas turbine

Abstract

The utility model discloses a water injection pipeline system for regulating combustion of a gas turbine. A pipeline connected with a combustion chamber water injection nozzle on the upper portion is in rigid connection with a water injection distributor and a gas turbine nozzle for transformation, so that the problems that vibration transmission attenuation is small, and metal is prone to fatigue are caused. The device comprises a water injection distributor and a gas turbine bottom base plate, a water injection pipeline support is fixed on the gas turbine bottom base plate, the water injection distributor is connected with a rigid metal pipeline, and the rigid metal pipeline is clamped through a pipe clamp of the water injection pipeline support. The end part of the rigid metal pipeline is communicated with the flexible metal pipeline, and the flexible metal pipeline is communicated with a water injection nozzle of the gas turbine body. The device is used for adjusting combustion water injection of the gas turbine.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of water injection pipeline system for adjusting gas turbine combustion. BACKGROUND

[0002] Gas turbine unit is burned by two kinds of medium, one is natural gas combustion, one is oil combustion, three combustion modes can be realized by the use of mixer, after being transformed from aviation unit to generator unit, nitrogen oxide emission is not up to standard, so oil pipeline is transformed into water injection pipeline to reduce combustion temperature and reduce thermal nitrogen oxide generation. After transformation, due to installation needs and pipeline strength needs, the original water injection distributor located on the gas turbine body is moved to the base plate below the gas turbine, and the upper pipeline connected with the combustion chamber water injection nozzle is rigidly connected with the water injection distributor and the gas turbine nozzle for transformation, which causes small vibration transmission attenuation, metal fatigue and other problems. At the same time, due to the consideration of thermal expansion factor, there are many compensation bends on the pipeline located on the gas turbine body, and the pipeline is arranged in a staggered manner, which makes it difficult to disassemble and repair. SUMMARY

[0003] The utility model aims at providing a kind of water injection pipeline system for adjusting gas turbine combustion to solve the technical problems existing in the above background technology.

[0004] The utility model provides the following technical scheme:

[0005] A kind of water injection pipeline system for adjusting gas turbine combustion, its composition includes: water injection distributor and gas turbine bottom base plate, the water injection pipeline support is fixed on the gas turbine bottom base plate, the water injection distributor is connected with rigid metal pipeline, the rigid metal pipeline is clamped by the pipe clamp of the water injection pipeline support, the end of the rigid metal pipeline is communicated with flexible metal pipeline, and the flexible metal pipeline is communicated with the water injection nozzle of gas turbine body.

[0006] The water injection pipeline support includes base, the base is fixed with support plate, a plurality of parallel and parallel arranged strip holes are formed on the support plate along the length direction, a plurality of positioning holes are formed between adjacent two strip holes, and the pipe clamp is fixed on the water injection pipeline support by bolt.

[0007] The water injection pipeline system for adjusting gas turbine combustion, the pipe clamp includes T-shaped buckle, and the T-shaped buckle is connected with Ω pipe clamp by bolt. Advantages

[0008] 1. The utility model discloses a flexible metal pipeline is connected with the water injection nozzle of corresponding height of gas turbine body, insulates mechanical vibration, reduces pipeline metal fatigue, realizes the effect that the service life of water injection pipeline system is prolonged, through rigid metal pipeline and water injection pipeline support, water injection pipeline is removed to the outside of gas turbine body, replaces the compensation bend scheme, realizes the effect that the maintenance process is optimized, and the maintenance cycle is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the structural schematic diagram of the utility model;

[0010] Figure 2 It is the front view of water injection pipeline support;

[0011] Figure 3 It is the side view of water injection pipeline support;

[0012] Figure 4 It is the plan view of water injection pipeline support;

[0013] Figure 5 It is the back view of water injection pipeline support;

[0014] Figure 6 It is Figure 2 the enlarged view of A of

[0015] Figure 7 It is the enlarged view of B of Figure 3

[0016] In the drawing: 1, water injection pipeline support; 2, rigid metal pipeline; 3, flexible metal pipeline; 4, water injection distributor; 5, strip hole; 6, positioning hole; 7, T type buckle; 8, support plate; 9, base; 10, locking bolt; 11, opening; 12, fixed bolt; 13, omega pipe clamp; 14, gas turbine bottom base plate; 15, gas turbine body; 16, water injection nozzle. DETAILED DESCRIPTION

[0017] Referring to Figures 1-7 , a kind of water injection pipeline system for adjusting gas turbine combustion, its composition includes: water injection distributor 4 and gas turbine bottom base plate 14, the water injection pipeline support 1 is fixed on the gas turbine bottom base plate of the gas turbine bottom base plate, water injection pipeline support is fixed on the gas turbine bottom base plate by bolt, the water injection distributor is connected with rigid metal pipeline 2, the rigid metal pipeline is held by the pipe clamp of the water injection pipeline support, and extends to different height upwards, the end of the rigid metal pipeline is communicated with flexible metal pipeline 3, and the flexible metal pipeline is communicated with the water injection nozzle 16 of gas turbine body 15.

[0018] ​The water injection pipeline support comprises a base 9, a support plate 8 fixed on the base, a plurality of parallel strip holes 5 arranged in length direction on the support plate, a plurality of positioning holes 6 arranged between two adjacent strip holes, and a pipe clamp fixed on the water injection pipeline support by bolts.

[0019] The pipe clamp comprises a T-shaped buckle 7 and an Ω-shaped clamp 13 connected by bolts.

[0020] Working principle: in use, one rigid metal pipeline is fixed on each pipe clamp, the nut on the fixing stud of the pipe clamp is unscrewed, the Ω-shaped clamp is disassembled, the locking bolt is removed, the rigid metal pipeline is rotated, the end of the rigid metal pipeline is lifted to be almost the same height as the water injection nozzle, the T-shaped buckle is slid to the corresponding height and the four through holes on the T-shaped buckle are aligned with the corresponding positioning holes, the positioning hole is a threaded hole, the locking bolt is screwed through the through hole on the T-shaped buckle and connected with the positioning hole, the T-shaped buckle is fixed, after the fixing is completed, the Ω-shaped clamp is buckled on the rigid metal pipeline, two fixing studs are welded on the Ω-shaped clamp, the fixing studs are screwed through the opening 11 of the T-shaped buckle, the nuts are screwed on the fixing studs, and the position of the rigid metal pipeline is fixed.

[0021] The water injection pipeline support is installed on the bottom plate of the gas turbine by bolts, and the pipe clamp provides a support point for the water injection pipeline; the water injection pipeline is designed in the idea of horizontal and vertical, and the water injection pipeline is attached to the support at different heights according to the height of the nozzle of the gas turbine body, the end of the rigid metal pipeline is connected with the water injection nozzle through the flexible metal pipeline to isolate the vibration of the gas turbine body and the remaining rigid connection part.

Claims

1. A water injection pipeline system for regulating combustion in a gas turbine, comprising: The water injection distributor and the bottom base plate of the gas turbine are characterized in that: a water injection pipe support is fixed on the bottom base plate of the gas turbine, the water injection distributor is connected to a rigid metal pipe, the rigid metal pipe is clamped by the pipe clamp of the water injection pipe support, the end of the rigid metal pipe is connected to a flexible metal pipe, and the flexible metal pipe is connected to the water injection nozzle of the gas turbine body.

2. A water injection pipeline system for regulating combustion in a gas turbine according to claim 1, characterized in that: The water injection pipe support includes a base, on which a support plate is fixed. The support plate has multiple parallel slots along its length, and multiple positioning holes are provided between adjacent slots. The pipe clamp is fixed to the water injection pipe support by bolts.

3. A water injection pipeline system for regulating combustion in a gas turbine according to claim 1, characterized in that: The pipe clamp includes a T-shaped fastener, which is connected to the Ω-shaped pipe clamp by bolts.

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