阅读说明：本技术 一种燃气轮机的负荷增强装置及方法 (Load enhancement device and method for gas turbine ) 是由 代晓光 刘广于 范晓明 王志永 于 2020-06-03 设计创作，主要内容包括：本发明公开了一种燃气轮机的负荷增强装置及方法,涉及动力设备技术领域,解决了燃气轮机在大气密度下降时出力受限的技术问题。燃气轮机的负荷增强装置包括输水管与至少1组雾化喷头,输水管的一端与锅炉的给水母管连通,输水管的另一端与至少1组雾化喷头连通；至少1组雾化喷头与煤气管连通,煤气管连通燃气轮机的燃烧室。本发明通过输水管引入锅炉给水母管中的高压除盐水,利用锅炉给水母管中的高压通过雾化喷头将除盐水雾化,无需额外设置给水泵等给水设备,节省了能源的消耗、设备的采购与维护,同时对钢铁企业的锅炉进行了有效的利用。雾化后的除盐水与煤气混合后再与空气燃烧,有利于提高煤气的燃烧量,增大对燃烧透平做功的通气量。(The invention discloses a load enhancement device and method of a gas turbine, relates to the technical field of power equipment, and solves the technical problem that the output of the gas turbine is limited when the atmospheric density is reduced. The load enhancement device of the gas turbine comprises a water pipe and at least 1 group of atomizing spray heads, wherein one end of the water pipe is communicated with a water supply main pipe of the boiler, and the other end of the water pipe is communicated with at least 1 group of atomizing spray heads; at least 1 group of atomizing nozzles are communicated with a gas pipe, and the gas pipe is communicated with a combustion chamber of the gas turbine. The high-pressure desalted water introduced into the boiler water supply main pipe through the water delivery pipe is atomized through the atomizing nozzle by utilizing the high pressure in the boiler water supply main pipe, and water supply equipment such as a water supply pump and the like is not required to be additionally arranged, so that the energy consumption and equipment purchase and maintenance are saved, and meanwhile, the boiler of a steel enterprise is effectively utilized. The atomized desalted water is mixed with coal gas and then combusted with air, which is favorable for improving the combustion amount of the coal gas and increasing the ventilation amount for thoroughly doing work on combustion.)

1. A load enhancement device for a gas turbine, comprising a water duct (12) and at least 1 set of atomising nozzles (19), wherein:

one end of the water conveying pipe (12) is communicated with a water supply main pipe of the boiler (1), and the other end of the water conveying pipe (12) is communicated with at least 1 group of atomizing spray heads (19);

at least 1 group of the atomizing nozzles (19) are communicated with a gas pipe (6), and the gas pipe (6) is communicated with a combustion chamber (7) of the gas turbine.

2. The load enhancement device of the gas turbine according to claim 1, wherein an annular pipe (13) is communicated between the water pipe (12) and at least 1 group of atomizing nozzles (19), the annular pipe (13) surrounds the outer periphery of the gas pipe (6), 16 groups of water spray pipes (14) are communicated on the annular pipe (13), the 16 groups of water spray pipes (14) are uniformly distributed along the annular direction of the annular pipe (13), and the atomizing nozzles (19) are respectively installed on each group of water spray pipes (14).

3. The load enhancement device of a gas turbine according to claim 2, wherein the annular pipes (13) are octagonal, and each of 2 groups of the water spray pipes (14) in the 16 groups of water spray pipes (14) are respectively arranged on the same side of the annular pipes (13), and the annular pipes (13) and the water spray pipes (14) are connected through flanges.

4. The load enhancement device of a gas turbine according to claim 3, wherein 2 groups of the atomizer nozzles (19) are spaced apart along the length of the gas pipe (6), 2 groups of the atomizer nozzles (19) are spaced apart along the circumference of the gas pipe (6), and 16 groups of the atomizer nozzles (19) are arranged in a quincunx pattern on the gas pipe (6).

5. The load enhancement device for a gas turbine according to claim 4, wherein the water injection pipe (14) is connected between the ring pipe (13) and the gas pipe (6) in a zigzag structure, and the ring pipe (13) is connected with a bracket for supporting the ring pipe (13).

6. The load enhancement device of a gas turbine according to claim 1, wherein a first flange (15) is connected to the water spray pipe (14), a second flange (16) is connected to the gas pipe (6), a bridge pipe (20) is connected between the gas pipe (6) and the second flange (16), the first flange (15) and the second flange (16) are fixed by bolts, the atomizing nozzle (19) has a pipe body (17), the pipe body (17) is connected between the first flange (15) and the second flange (16), and the atomizing nozzle (19) extends into the gas pipe (6).

7. The load enhancement device of a gas turbine according to claim 6, wherein the pipe body (17) is provided with a limiting disc (18), the diameter of the limiting disc (18) is the same as that of the first flange plate (15) and the second flange plate (16), and the atomizing nozzle (19) is connected between the first flange plate (15) and the second flange plate (16) through the limiting disc (18) in a threaded manner, so that the atomizing nozzle (19) is kept in a relatively fixed position.

8. The load enhancement device of a gas turbine according to any one of claims 1 to 7, wherein one end of the water pipe (12) close to a water supply main pipe of the boiler (1) is provided with a flow control valve (10) for controlling the flow of demineralized water, and one end of the water pipe (12) close to the gas pipe (6) is provided with an isolation valve (11) for preventing gas from flowing backwards.

9. The load enhancement device of a gas turbine according to any one of claims 1 to 7, characterized in that the gas pipe (6) introduces gas generated by the blast furnace (2), a dust remover (3) and a coal press (4) are respectively arranged between the gas pipe (6) and the blast furnace (2), and a gas cooler (5) is connected between an input port of the dust remover (3) and an output port of the coal press (4).

10. A method for load enhancement of a gas turbine, characterized in that, the load enhancement device of the gas turbine according to any one of claims 1 to 8 is used, the water supply main pipe of the boiler (1) injects desalted water from an atomizing nozzle (19) into a gas pipe (6) through a water pipe (12), the desalted water atomized by the atomizing nozzle (19) is mixed with gas in the gas pipe (6) and then is conveyed to a combustion chamber (7) of the gas turbine, the combustion chamber (7) inputs air through an air compressor (8), and the gas turbine applies work to a combustion turbine (9) of the gas turbine after the gas and the air are combusted in the combustion chamber (7).

Technical Field

The invention relates to the technical field of power equipment, in particular to a load enhancement device and method of a gas turbine.

Background

Gas turbines are widely used in the steel industry. The gas turbine is internal combustion type power mechanical equipment which takes continuously flowing gas as a working medium to drive an impeller to rotate at a high speed and converts the energy of fuel into useful work, and is a rotary impeller type heat engine.

Disclosure of Invention

In view of the above, the present invention is directed to overcome the disadvantages of the prior art, and in a first aspect, a load enhancement apparatus for a gas turbine is provided to solve the technical problem of the prior art that the output of the gas turbine is limited when the atmospheric density is reduced.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a load enhancement device of a gas turbine comprises a water delivery pipe and at least 1 group of atomizing nozzles, wherein:

one end of the water conveying pipe is communicated with a water supply main pipe of the boiler, and the other end of the water conveying pipe is communicated with at least 1 group of atomizing spray heads;

at least 1 group of the atomizing nozzles are communicated with a gas pipe, and the gas pipe is communicated with a combustion chamber of the gas turbine.

On the basis of the technical scheme, the load enhancement device of the gas turbine can be improved as follows.

Optionally, an annular pipe is communicated between the water pipe and at least 1 group of atomizing nozzles, the annular pipe surrounds the outside of the gas pipe, 16 groups of water spray pipes are communicated with the annular pipe, the 16 groups of water spray pipes are uniformly distributed along the annular direction of the annular pipe, and the atomizing nozzles are respectively installed on each group of water spray pipes.

Optionally, the ring pipes are of an octagonal structure, 16 groups of the water spray pipes are arranged on the same edge of the ring pipes respectively, and the ring pipes and the water spray pipes are connected through flanges.

Optionally, 2 groups of the atomizer along the length direction interval distribution of the gas pipe, 2 groups of the atomizer along the circumferential interval distribution of the gas pipe, and 16 groups of the atomizer on the gas pipe are arranged in a quincunx shape.

Optionally, the water spray pipe is connected between the annular pipe and the gas pipe in a zigzag structure, and the annular pipe is connected with a support for supporting the annular pipe.

Optionally, the spray pipe is connected with a first flange plate, the gas pipe is connected with a second flange plate, a bridge pipe is connected between the gas pipe and the second flange plate, the first flange plate and the second flange plate are fixedly connected through bolts, the atomizer is provided with a pipe body, the pipe body is connected between the first flange plate and the second flange plate, and the atomizer stretches into the gas pipe.

Optionally, the pipe body is provided with a limiting disc, the diameter of the limiting disc is the same as that of the first flange disc and that of the second flange disc, and the atomizing nozzle is connected between the first flange disc and the second flange disc through the limiting disc in a threaded mode, so that the atomizing nozzle keeps a relatively fixed position.

Optionally, a flow control valve for controlling the flow of the demineralized water is arranged at one end of the water delivery pipe close to the water supply main pipe of the boiler, and an isolation valve for preventing the gas from flowing backwards is arranged at one end of the water delivery pipe close to the gas pipe.

Optionally, coal gas generated by the blast furnace is introduced into the coal gas pipe, a dust remover and a coal press are respectively arranged between the coal gas pipe and the blast furnace, and a coal gas cooler is connected between an input port of the dust remover and an output port of the coal press.

In a second aspect, the invention further provides a load enhancement method for a gas turbine, using the load enhancement device for a gas turbine, the demineralized water is sprayed from the atomizer to the gas pipe through the water supply pipe of the boiler, the demineralized water atomized by the atomizer is mixed with the gas in the gas pipe and then is conveyed to the combustion chamber of the gas turbine, and the combustion chamber inputs air through the air compressor, so that the gas and the air perform work on the combustion turbine of the gas turbine after being combusted in the combustion chamber.

Compared with the prior art, the load enhancement device of the gas turbine provided by the invention has the beneficial effects that:

the high-pressure desalted water introduced into the boiler water supply main pipe through the water delivery pipe is atomized through the atomizing nozzle by utilizing the high pressure in the boiler water supply main pipe, and water supply equipment such as a water supply pump and the like is not required to be additionally arranged, so that the energy consumption and equipment purchase and maintenance are saved, and meanwhile, the boiler of a steel enterprise is effectively utilized. The atomized desalted water is mixed with the coal gas and then combusted with the air, so that the temperature of the air gas during combustion can be reduced, the combustion quantity of the coal gas is favorably improved, and the ventilation quantity of the coal gas for completely doing work in combustion is increased. Meanwhile, the desalted water after combustion and vaporization contributes to work for the thorough combustion, and the output of the gas turbine is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the structure of a load enhancement device of a gas turbine according to the present invention;

FIG. 2 is a schematic view of the connection between the gas pipe and the water spray pipe in FIG. 1;

FIG. 3 is a schematic view of the spray pipe of FIG. 2 connected to the atomizer;

FIG. 4 is a flow chart of a load augmentation method of a gas turbine of the present invention.

In the figure:

1-a boiler; 2, a blast furnace; 3, a dust remover; 4-coal press; 5-gas cooler; 6-a gas pipe; 7-a combustion chamber; 8, an air compressor; 9-a combustion turbine; 10-a flow control valve; 11-an isolation valve; 12-a water conveying pipe; 13-a ring-shaped tube; 14-a water spray pipe; 15-a first flange; 16-a second flange; 17-a pipe body; 18-a limiting disc; 19-an atomizing spray head; 20-bridge tube.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention and are not to be taken as a comprehensive embodiment. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.