CN108915872B - Method for improving power generation efficiency of thermal power plant - Google Patents
Method for improving power generation efficiency of thermal power plant Download PDFInfo
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- CN108915872B CN108915872B CN201810721435.3A CN201810721435A CN108915872B CN 108915872 B CN108915872 B CN 108915872B CN 201810721435 A CN201810721435 A CN 201810721435A CN 108915872 B CN108915872 B CN 108915872B
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- 238000010248 power generation Methods 0.000 title claims abstract description 123
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 143
- 239000002918 waste heat Substances 0.000 claims abstract description 4
- 238000002485 combustion reaction Methods 0.000 claims description 84
- 238000007664 blowing Methods 0.000 claims description 58
- 239000000446 fuel Substances 0.000 claims description 38
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 239000004744 fabric Substances 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 9
- 238000005299 abrasion Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 13
- 238000005507 spraying Methods 0.000 description 7
- 239000010687 lubricating oil Substances 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/02—Plural gas-turbine plants having a common power output
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
- F02C3/107—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor with two or more rotors connected by power transmission
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/14—Gas-turbine plants characterised by the use of combustion products as the working fluid characterised by the arrangement of the combustion chamber in the plant
- F02C3/16—Gas-turbine plants characterised by the use of combustion products as the working fluid characterised by the arrangement of the combustion chamber in the plant the combustion chambers being formed at least partly in the turbine rotor or in an other rotating part of the plant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/24—Heat or noise insulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of thermal power generation, in particular to a method for improving the power generation efficiency of a thermal power plant; the method comprises the following steps: the thermal power generation equipment of a power plant is replaced by a power generation type gas turbine, and a plurality of spare bearings are arranged on a driving shaft, so that the time for replacing the bearings is saved; bearings at the side generator set are seriously worn, the bearings on the side generator set and an inclined chute on the surface of a main shaft are comprehensively lubricated for one time, a filter screen is additionally arranged at an air inlet of a gas turbine power generation device to filter air sucked by the air inlet, tail gas released from an air outlet is circulated to the outer wall of the air inlet of a shell through a circulating pipe, so that the waste heat of the tail gas in the circulating pipe heats the air inlet of the shell, and the air inlet temperature of the air inlet is improved; the invention improves the power generation efficiency of the thermal power plant by improving the power generation efficiency of the gas turbine power generation device.
Description
Technical Field
The invention belongs to the technical field of thermal power generation, and particularly relates to a method for improving the power generation efficiency of a thermal power plant.
Background
The power plants are divided into hydraulic power plants, thermal power plants, solar power plants, tidal power plants and nuclear power plants according to the difference of the used energy, and the advantages and the disadvantages of the power generation of various power generation plants are different. Among them, thermal power generation is power generation using thermal energy obtained by burning fuel (coal, petroleum and products thereof, natural gas, etc.), and there are two main forms of a power generation unit for thermal power generation: the high-temperature and high-pressure steam generated by the boiler impacts a steam turbine to rotate to drive a generator to generate electricity, and the generator is called as a steam turbine generator unit; the fuel enters a gas turbine to directly convert the heat energy into mechanical energy to drive a generator to generate electricity, and the generator is called a gas turbine generator set; the gas turbine generator mainly comprises three parts, namely a gas compressor, a combustion chamber and a power turbine (a gas turbine), and also comprises a control system, a starting system, a lubricating oil system, a fuel system, an accessory gearbox and the like.
The power generation efficiency of the existing thermal power plant is generally low, wherein, the thermal power plant which uses a gas turbine generator set to generate power has low fuel combustion thermal expansion work efficiency, which directly results in low power generation efficiency of the power plant, therefore, how to better improve the fuel combustion thermal expansion work to improve the power generation efficiency of the power plant is a concern of each thermal power plant and energy related departments.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a method for improving the power generation efficiency of a thermal power plant. The invention improves the power generation efficiency of the power generation type gas turbine by reducing the replacement time of the worn bearing, reducing the replacement frequency of the bearing, improving the flexibility of the driving rod and the main shaft and heating and filtering the air entering from the air inlet, thereby improving the power generation efficiency of a power plant.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a method for improving the power generation efficiency of a thermal power plant, which comprises the following steps:
the method comprises the following steps: replacing thermal power generation equipment of a thermal power plant with a power generation type gas turbine;
step two: after the thermal power generation equipment is replaced in the first step, a plurality of spare bearings are installed on the driving shaft, so that the bearings on the side generator set can be replaced in time without detaching the driving shaft after the bearings on the side generator set are seriously worn, the time for replacing the bearings is saved, and all the bearings are replaced at one time after the bearings on the side generator set are seriously worn;
step three: after the arrangement of the bearings in the power generation type gas turbine is completed in the second step, the bearings on the side generator set and the inclined sliding grooves on the surface of the main shaft are comprehensively lubricated for one time, so that the abrasion of the bearings is reduced, and the frequency of replacing the bearings is reduced; the abrasion of the driving rod and the main shaft is reduced, the flexibility of the driving rod sliding on the main shaft is improved, and the working efficiency of the air blower is further improved;
step four: after the circulating pipe is arranged in the third step, a filter screen is added at the air inlet of the power generation type gas turbine to filter air sucked by the air inlet, so that dust is prevented from entering the interior of the power generation type gas turbine to influence the power generation efficiency of the power generation type gas turbine;
step five: after the arrangement of the filter screens is completed in the fourth step, tail gas released from the gas outlet is circulated to the outer wall of the air inlet of the machine shell through the arranged circulating pipe, so that the waste heat of the tail gas in the circulating pipe heats the air inlet of the machine shell, and the air inlet temperature of the air inlet is improved;
the power generation type gas turbine used in the first step comprises a shell, an air blower, an air compressor, a combustion chamber, a driving shaft, a main power turbine, a main generator and a side generator set, wherein the shell comprises an air inlet and an air outlet; the air inlet is positioned at one end of the shell and is used for sucking air; the air outlet is positioned at the other end of the shell and is used for discharging tail gas; the driving shaft is limited in the center of the shell through a shaft seat; the air blower is positioned at the air inlet and connected with the driving shaft, and is used for blowing air with pressure into the air inlet; the air compressor is positioned beside the air blower, connected with the driving shaft and used for pressurizing air with pressure blown by the air blower again and sending the air with higher pressure into the combustion chamber, and the air compressor is an axial-flow type air compressor; the combustion chamber is positioned beside the gas compressor, the combustion chamber mixes and combusts fuel and air conveyed by the gas compressor and releases heat energy, and the combustion chamber is an annular combustion chamber or an annular combustion chamber; the main power turbine is arranged on the driving shaft and is positioned beside the combustion chamber, the main power turbine is used for converting heat energy generated by the combustion chamber into kinetic energy generated by rotation of the main power turbine, and the main power turbine is a rotational flow type turbine; the main generator is rotationally connected with the driving shaft and is used for converting kinetic energy generated by rotation of the driving shaft into electric energy; the side generator set is connected with the driving shaft and receives heat energy generated by the combustion chamber and converts the heat energy into kinetic energy so as to convert the kinetic energy into electric energy; in addition, a control and regulation system, a starting system, a lubricating oil system and the like are arranged in the power generation type gas turbine, and the control and regulation system is used for controlling the working operation of the whole power generation type gas turbine; the starting system is used for the initial starting of the power generation type gas turbine; the lubricating oil system is used for lubricating each easily-worn part of the gas turbine; wherein,
the air blower comprises a main shaft, a driving rod, a fixing frame and an air blowing component, wherein the main shaft is fixedly connected with the driving shaft, and a circle of inclined sliding groove is arranged on the surface of the main shaft; the fixed frame is detachably and fixedly connected with the inner wall of the shell; the driving rod is connected with the fixed frame in a sliding manner, and the lower end of the driving rod extends into the inclined chute of the main shaft; the air blowing component is connected with the end part of the driving rod. When the air blowing device works, the driving shaft drives the main shaft to rotate, the inclined sliding groove on the main shaft limits the position of the driving rod to enable the driving rod to reciprocate back and forth, and the reciprocating motion of the driving rod drives the air blowing component to blow air to the air inlet, so that the air pressure entering the air inlet is higher than the atmospheric pressure.
The air blowing component is an air blowing plate; the shape of the air blowing plate is an elliptic hemispherical shell. The air-blowing plate is in an oval hemispherical shell shape, so that the air-blowing efficiency of the air-blowing component is improved, and the power generation efficiency of the whole power generation type gas turbine is further improved.
The air blowing plate comprises a plate body, a hinged part, a spring and a hinged plate, wherein the plate body is fixedly connected with the end part of the driving rod and is of an elliptic semispherical shell skeleton and a reticular structure of the elliptic semispherical shell skeleton; the hinge parts are uniformly distributed on the plate body and fixedly connected with the plate body, and convex ribs are arranged at the upper ends of the hinge parts; the hinge plate performs opening and closing movement on the plate body, one end of the hinge plate is hinged with the hinged part, and the other end of the hinge plate abuts against a convex rib of the lower end adjacent to the hinged part; one end of the spring is fixedly connected with the hinged part, and the other end of the spring is fixedly connected with the hinged plate. When the gas turbine works, the driving rod moves towards the inner side of the gas inlet, the hinge plate is abutted against the convex rib under the action of the elastic force of the spring, the hinge plate is abutted against the plate body, the whole gas blowing plate is closed, the gas blowing plate blows air into the gas inlet, so that the air at the gas inlet has initial pressure, the air pressure entering the combustion chamber is higher, the main power turbine and the secondary power turbine can do work, and the power generation efficiency of the whole power generation type gas turbine is improved; when the driving rod moves towards the outer side of the air inlet, the hinge plate and the plate body are opened under the action of air resistance, air leaks out from a gap between the hinge plate and the plate body, the air resistance borne by the air blowing plate is reduced, and the energy loss of the power generation type gas turbine during acting is reduced.
The air blowing component is an automatic umbrella folding and unfolding component; the automatic retractable umbrella comprises an umbrella rib unit, umbrella cloth, an umbrella rod and a pull rope, wherein the umbrella rod is in a round rod shape with one larger end and the other smaller end; the umbrella rib units are hinged with the small end of the umbrella rod, and the umbrella rib units surround the umbrella rod to form a circle; the umbrella cloth is attached to the inner sides of the umbrella rib units and fixedly connected with the umbrella rib units; one end of the pull rope is tied with the end part of the umbrella rib unit, and the other end of the pull rope is tied with the middle part of the umbrella rod; the big end of the umbrella rod is fixedly connected with the driving rod. When the umbrella is in work, the driving rod moves towards the inner side of the air inlet, the umbrella rod moves along with the driving rod, the pull rope is stretched straight under the action of air resistance, the umbrella rib units are expanded at the umbrella rod, the umbrella cloth blows air into the air inlet, and air in the air inlet is pressurized, so that the air in the air inlet has initial pressure; the driving rod moves towards the outer side of the air inlet, the umbrella rib units shrink at the umbrella rod under the action of air resistance, resistance on automatic umbrella folding and unfolding is reduced, and energy loss of the power generation type gas turbine during acting is reduced.
The main shaft is provided with a plurality of standby inclined sliding chutes. During operation, when the inclined sliding groove is seriously abraded, the inclined sliding groove of the driving rod in contact with the main shaft can be replaced by adjusting the relative position of the fixing frame and the inner wall of the shell, and the working efficiency of the air blower is improved.
An oil injection pipe is arranged in the combustion chamber; a tail gas side outlet is formed in the gas outlet of the shell; a tail gas pipe is arranged at the end part of the tail gas side outlet; the tail gas pipe extends to the oil spraying pipe and wraps the oil spraying pipe from the outer part of the oil spraying pipe. During operation, tail gas with residual heat flows through the oil spraying pipe, so that the temperature of fuel in the oil spraying pipe is increased, the fuel sprayed by the oil spraying pipe is easier to atomize, the temperature of combustion is higher, and the working efficiency of the combustion chamber is improved.
The side generator set comprises a bearing, a secondary power turbine, an annular bevel gear, a bevel gear II and a side generator, and the bearing is sleeved on the driving shaft; the secondary power turbine has the same structure as the main power turbine, and is fixed on the bearing outer ring; the annular bevel gear is sleeved on the outer side of the secondary power turbine and fixedly connected with the outer side of the secondary power turbine, and the annular bevel gear is meshed with the bevel gear II; and the second bevel gear is connected with a side generator. When the gas turbine works, hot air flow generated by the combustion chamber drives the secondary power turbine to rotate, and the secondary power turbine is connected with the driving shaft through the bearing, so that the secondary power turbine and the driving shaft do not rotate synchronously, the secondary power turbine drives the side generator to generate electricity through the annular bevel gear and the bevel gear, and a plurality of groups of side-generating motor sets are arranged, so that the kinetic energy of the hot air flow can be utilized to the maximum extent until the flow velocity of the hot air flow cannot drive the secondary power turbine to rotate, the heat energy generated by the combustion chamber can be utilized to the maximum extent, and the generating efficiency of the power generation type gas turbine.
The inner wall of the annular bevel gear is an inclined wall, one end of the inclined wall is flush with the inner wall of the shell, and the other end of the inclined wall is located on the inner side of the inner wall of the shell. The inner wall of the annular bevel gear is set to be the inclined wall, so that hot air flow generated by the combustion chamber can flow to the center of the driving shaft as far as possible, the utilization of energy generated by the secondary power turbine to the combustion chamber is improved, and the power generation efficiency of the power generation type gas turbine is improved.
The inner wall of the shell is provided with a heat insulation layer which is used for reducing heat loss generated by the combustion chamber and is a ceramic heat insulation layer. The heat insulation layer is arranged on the inner wall of the shell, so that the loss of energy generated by the combustion chamber is reduced, and the power generation efficiency of the power generation type gas turbine is improved.
The heat insulation layer covers the surface of the driving shaft, the surface of the main power turbine and the surface of the secondary power turbine. The surfaces of the driving shaft, the main power turbine and the secondary power turbine are covered with heat insulation layers, so that the loss of energy generated by the combustion chamber is reduced, and the power generation efficiency of the power generation type gas turbine is improved.
The invention has the following beneficial effects:
1. the method for improving the power generation efficiency of the thermal power plant provided by the invention has the advantages that the power generation efficiency of the power generation type gas turbine is improved by reducing the replacement time of a worn bearing, reducing the replacement frequency of the bearing, improving the flexibility of the driving rod and the main shaft and filtering and heating air entering from the air inlet, so that the power generation efficiency of the power plant is improved.
2. The method for improving the power generation efficiency of the thermal power plant improves the pressure of compressed air through the mutual matching work of the casing, the air blower, the air compressor, the combustion chamber and the driving shaft, so that the combustion chamber can generate larger hot air flow, and fuel is fully utilized, thereby improving the power generation efficiency of the power generation type gas turbine and further improving the power generation efficiency of the power plant.
3. According to the method for improving the power generation efficiency of the thermal power plant, the fuel in the oil injection pipe is heated by arranging the tail gas pipe, so that the thermal expansion strength of hot gas flow generated by the combustion chamber is higher, the rotating speed of the main power turbine and the secondary power turbine can be improved, the power generation efficiency of the power generation type gas turbine is further improved, and the power generation efficiency of the power plant is further improved.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic illustration of a power generation gas turbine according to the present invention;
FIG. 3 is an enlarged view taken at A with respect to FIG. 2;
FIG. 4 is a schematic view of the connection of the automatic retractable umbrella of the present invention to the driving rod;
FIG. 5 is a schematic view of the automatic retractable umbrella of the present invention;
fig. 6 is a schematic view showing the construction of an umbrella rib unit of the present invention;
in the figure: the automatic air blowing device comprises a machine shell 1, an air inlet 11, an air outlet 12, an axle seat 13, an air blower 2, a main shaft 21, an inclined sliding groove 211, a driving rod 22, a fixed frame 23, an air blowing plate 24, a plate body 241, a hinged part 242, a convex rib 242a, a spring 243, a hinged plate 244, an automatic folding umbrella 25, an umbrella rib unit 251, umbrella cloth 252, an umbrella rod 253, a pull rope 254, an air compressor 3, a combustion chamber 4, an oil spraying pipe 41, a tail gas pipe 42, a driving shaft 5, a driving power turbine 51, a main generator 52, a side generator set 6, a bearing 61, a secondary power turbine 62, an annular bevel gear 63, an inclined wall 631, a bevel gear II.
Detailed Description
A method for improving the power generation efficiency of a thermal power plant according to an embodiment of the present invention will be described below with reference to fig. 1 to 6.
As shown in fig. 1 and 2, the method for improving the power generation efficiency of a thermal power plant according to the present invention comprises the following steps:
the method comprises the following steps: replacing thermal power generation equipment of a thermal power plant with a power generation type gas turbine;
step two: after the thermal power generation equipment is replaced in the first step, a plurality of spare bearings 61 are arranged on the driving shaft 5, so that the bearings 61 on the side generator set 6 can be replaced in time without detaching the driving shaft 5 after the bearings 61 on the side generator set 6 are seriously worn, the time for replacing the bearings 61 is saved, and all the bearings 61 are replaced at one time after the bearings 61 on the side generator set 6 are seriously worn;
step three: after the arrangement of the bearing 61 in the power generation type gas turbine is completed in the second step, the bearing 61 on the side generator set 6 and the inclined chute 211 on the surface of the main shaft 21 are comprehensively lubricated for one time, so that the abrasion of the bearing 61 is reduced, and the replacement frequency of the bearing 61 is reduced; the abrasion between the driving rod 22 and the main shaft 21 is reduced, the flexibility of the driving rod 22 sliding on the main shaft 21 is improved, and the working efficiency of the air blower 2 is further improved;
step four: after the third step is finished, a filter screen is added at the air inlet 11 of the power generation type gas turbine to filter air sucked by the air inlet 11, so that dust is prevented from entering the power generation type gas turbine to influence the power generation efficiency of the power generation type gas turbine;
step five: after the arrangement of the filter screens is completed in the fourth step, tail gas released from the gas outlet 12 is circulated to the outer wall of the gas inlet 11 of the machine shell 1 through the arranged circulating pipe, so that the waste heat of the tail gas in the circulating pipe heats the gas inlet 11 of the machine shell 1, and the gas inlet temperature of the gas inlet 11 is increased;
the power generation type gas turbine used in the first step comprises a shell 1, a gas blower 2, a gas compressor 3, a combustion chamber 4, a driving shaft 5, a main power turbine 51, a main generator 52 and a side generator set 6, wherein the shell 1 comprises a gas inlet 11 and a gas outlet 12; the air inlet 11 is positioned at one end of the machine shell 1, and the air inlet 11 is used for sucking air; the air outlet 12 is positioned at the other end of the casing 1, and the air outlet 12 is used for discharging tail gas; the driving shaft 5 is limited in the center of the machine shell 1 through an arranged shaft seat 13; the air blower 2 is positioned at the air inlet 11, the air blower 2 is connected with the driving shaft 5, and the air blower 2 is used for blowing air with pressure into the air inlet 11; the air compressor 3 is positioned beside the air blower 2, the air compressor 3 is connected with the driving shaft 5, the air compressor 3 is used for pressurizing air with pressure blown by the air blower 2 again and sending the air with higher pressure into the combustion chamber 4, and the air compressor 3 is an axial-flow type air compressor 3; the combustion chamber 4 is positioned at the side of the gas compressor 3, the combustion chamber 4 mixes and combusts fuel and air conveyed by the gas compressor 3 and releases heat energy, and the combustion chamber 4 is a circular-tube-shaped combustion chamber 4 or an annular combustion chamber 4; the main power turbine 51 is arranged on the driving shaft 5, the main power turbine 51 is located beside the combustion chamber 4, the main power turbine 51 is used for converting heat energy generated by the combustion chamber 4 into kinetic energy of rotation of the main power turbine 51, and the main power turbine 51 is a cyclone turbine; the main generator 52 is rotationally connected with the driving shaft 5, and the main generator 52 is used for converting the kinetic energy of the rotation of the driving shaft 5 into electric energy; the side generator set 6 is connected with the driving shaft 5, and the side generator set 6 receives heat energy generated by the combustion chamber 4 and converts the heat energy into kinetic energy so as to convert the kinetic energy into electric energy; in addition, a control and regulation system, a starting system, a lubricating oil system and the like are arranged in the power generation type gas turbine, and the control and regulation system is used for controlling the working operation of the whole power generation type gas turbine; the starting system is used for the initial starting of the power generation type gas turbine; the lubricating oil system is used for lubricating each easily-worn part of the gas turbine; wherein,
as shown in fig. 2, the blower 2 includes a main shaft 21, a driving rod 22, a fixing frame 23 and a blowing component, the main shaft 21 is fixedly connected with the driving shaft 5, and a circle of inclined sliding grooves 211 is arranged on the surface of the main shaft 21; the fixed frame 23 is detachably and fixedly connected with the inner wall of the machine shell 1; the driving rod 22 is connected with the fixed frame 23 in a sliding manner, and the lower end of the driving rod 22 extends into the inclined chute 211 of the main shaft 21; the air-blowing member is connected to the end of the drive rod 22. When the air blowing device works, the driving shaft 5 drives the main shaft 21 to rotate, the inclined chute 211 on the main shaft 21 limits the position of the driving rod 22 to enable the driving rod 22 to reciprocate back and forth, the reciprocating motion of the driving rod 22 drives the air blowing component to blow air to the air inlet 11, and the air pressure entering the air inlet 11 is higher than the atmospheric pressure.
As shown in fig. 2, the air-blowing component is an air-blowing plate 24; the air-blowing plate 24 is an elliptical hemispherical shell. The air blowing plate 24 is in an oval hemispherical shell shape, which is beneficial to improving the air blowing efficiency of the air blowing component, and further improving the power generation efficiency of the whole power generation type gas turbine.
As shown in fig. 2 and 3, the air blowing plate 24 includes a plate body 241, a hinge portion 242, a spring 243 and a hinge plate 244, the plate body 241 is fixedly connected with the end portion of the driving rod 22, and the plate body 241 is an elliptical hemispherical shell skeleton and has a mesh structure of the elliptical hemispherical shell skeleton; the plurality of hinge parts 242 are provided, the hinge parts 242 are uniformly distributed on the plate body 241, the hinge parts 242 are fixedly connected with the plate body 241, and the upper ends of the hinge parts 242 are provided with convex ribs 242 a; the hinge plate 244 performs opening and closing movement on the plate body 241, one end of the hinge plate 244 is hinged with the hinge part 242, and the other end of the hinge plate 244 abuts against the convex rib 242a of the lower end adjacent hinge part 242; one end of the spring 243 is fixedly connected to the hinge portion 242, and the other end of the spring 243 is fixedly connected to the hinge plate 244. When the gas turbine works, the driving rod 22 moves towards the inner side of the air inlet 11, the hinge plate 244 is abutted against the convex rib 242a under the action of the elastic force of the spring 243, the hinge plate 244 is abutted against the plate body 241, the whole air blowing plate 24 is closed, the air blowing plate 24 blows air into the air inlet 11, so that the air at the air inlet 11 has initial pressure, the air pressure entering the combustion chamber 4 is higher, the main power turbine 51 and the secondary power turbine 62 do work, and the power generation efficiency of the whole power generation type gas turbine is improved; when the driving rod 22 moves to the outside of the air inlet 11, under the action of air resistance, the hinge plate 244 and the plate body 241 are opened, air leaks out from the gap between the hinge plate 244 and the plate body 241, the air resistance borne by the air blowing plate 24 is reduced, and the energy loss of the power generation type gas turbine during working is reduced.
As shown in fig. 2 and 4, the air blowing part is an automatic umbrella 25; the automatic folding and unfolding umbrella 25 comprises an umbrella rib unit 251, an umbrella cloth 252, an umbrella rod 253 and a pull rope 254, wherein the umbrella rod 253 is in a round rod shape with one larger end and the other smaller end; the umbrella rib units 251 are hinged with the small end of the umbrella rod 253, and the umbrella rib units 251 surround the umbrella rod 253 to form a circle; the umbrella cloth 252 is attached to the inner side of the umbrella rib unit 251, and the umbrella cloth 252 is fixedly connected with the umbrella rib unit 251; one end of the pull rope 254 is tied with the end part of the umbrella frame unit 251, and the other end of the pull rope 254 is tied with the middle part of the umbrella rod 253; the big end of the umbrella rod 253 is fixedly connected with the driving rod 22. When the umbrella is in use, the driving rod 22 moves towards the inner side of the air inlet 11, the umbrella rod 253 moves along with the driving rod 22, the pull rope 254 is stretched straight under the action of air resistance, the umbrella rib units 251 are expanded at the umbrella rod 253, the umbrella cloth 252 blows air into the air inlet 11, and the air in the air inlet 11 is pressurized, so that the air in the air inlet 11 has initial pressure; the driving rod 22 moves towards the outside of the air inlet 11, the umbrella rib unit 251 contracts at the umbrella rod 253 under the action of air resistance, the resistance on automatically folding and unfolding the umbrella 25 is reduced, and the energy loss of the power generation type gas turbine during acting is reduced.
As shown in fig. 2, the main shaft 21 is provided with a plurality of spare inclined slide grooves 211. During operation, when the inclined sliding groove 211 is seriously abraded, the inclined sliding groove 211 of the driving rod 22 contacting with the main shaft 21 can be replaced by adjusting the relative position of the fixed frame 23 and the inner wall of the machine shell 1, and the working efficiency of the air blower 2 is improved.
As shown in fig. 2, an oil spray pipe 41 is arranged in the combustion chamber 4; a tail gas side outlet is formed at the gas outlet 12 of the shell 1; the end part of the tail gas side outlet is provided with a tail gas pipe 42; the tail gas pipe 42 extends to the oil spout pipe 41 and wraps the oil spout pipe 41 from the outside of the oil spout pipe 41. During operation, the tail gas with residual temperature will drift through the fuel injection pipe 41, so that the temperature of the fuel in the fuel injection pipe 41 is raised, the fuel sprayed from the fuel injection pipe 41 is more easily atomized, the temperature of the fuel is higher, and the working efficiency of the combustion chamber 4 is improved.
As shown in fig. 2, the side generator set 6 comprises a bearing 61, a secondary power turbine 62, an annular bevel gear 63, a bevel gear two 64 and a side generator 65, wherein the bearing 61 is sleeved on the driving shaft 5; the secondary power turbine 62 has the same structure as the main power turbine 51, and the secondary power turbine 62 is fixed on the outer ring of the bearing 61; the annular bevel gear 63 is sleeved on the outer side of the secondary power turbine 62, the annular bevel gear 63 is fixedly connected with the outer side of the secondary power turbine 62, and the annular bevel gear 63 is meshed with the bevel gear II 64; the second bevel gear 64 is connected with a side generator 65. When the gas turbine works, hot air flow generated by the combustion chamber 4 drives the secondary power turbine 62 to rotate, the secondary power turbine 62 is connected with the driving shaft 5 through the bearing 61, therefore, the secondary power turbine 62 and the driving shaft 5 do not rotate synchronously, the secondary power turbine 62 drives the side generator 65 to generate electricity through the annular bevel gear 63 and the bevel gear II 64, and a plurality of groups of side-generating motor units are arranged, so that the kinetic energy of the hot air flow can be utilized to the maximum extent until the flow velocity of the hot air flow cannot drive the secondary power turbine 62 to rotate, the heat energy generated by the combustion chamber 4 is utilized to the maximum extent, and the generating efficiency of the power generation type gas turbine is improved.
As shown in fig. 2, the inner wall of the annular bevel gear 63 is a sloped wall 631, one end of the sloped wall 631 is flush with the inner wall of the housing 1, and the other end of the sloped wall 631 is located inside the inner wall of the housing 1. The inner wall of the annular bevel gear 63 is set to be the inclined wall 631, so that hot air flow generated by the combustion chamber 4 can flow to the center of the driving shaft 5 as much as possible, utilization of energy generated by the combustion chamber 4 by the secondary power turbine 62 is improved, and power generation efficiency of the power generation type gas turbine is improved.
As shown in fig. 2, a heat insulating layer is disposed on the inner wall of the casing 1, and the heat insulating layer is used for reducing heat dissipation generated by the combustion chamber 4 and is a ceramic heat insulating layer. The heat insulation layer is arranged on the inner wall of the shell 1, so that the loss of energy generated by the combustion chamber 4 is reduced, and the power generation efficiency of the power generation type gas turbine is improved.
As shown in fig. 2, the heat insulating layer covers the surface of the drive shaft 5, the surface of the main power turbine 51, and the surface of the secondary power turbine 62. The surfaces of the driving shaft 5, the main power turbine 51 and the secondary power turbine 62 are all covered with heat insulation layers, so that the dissipation of energy generated by the combustion chamber 4 is reduced, and the power generation efficiency of the power generation type gas turbine is improved.
When the air-blowing component is the air-blowing plate 24:
when the gas turbine works, the starting system is used for starting the power generation type gas turbine, after the driving shaft 5 has the initial speed, the starting system is closed, the driving shaft 5 drives the air blower 2 to work, the main shaft 21 starts to rotate, the inclined chute 211 on the main shaft 21 limits the position of the driving rod 22 to enable the driving rod 22 to reciprocate back and forth, the reciprocating motion of the driving rod 22 drives the air blowing component to blow air to the air inlet 11, and the air pressure entering the air inlet 11 is higher than the atmospheric pressure; when the driving rod 22 moves towards the inner side of the air inlet 11, the hinge plate 244 is abutted against the convex rib 242a under the elastic force of the spring 243, the hinge plate 244 is abutted against the plate body 241, the whole air blowing plate 24 is closed, the air blowing plate 24 blows air into the air inlet 11, so that the air at the air inlet 11 has initial pressure, the air pressure entering the combustion chamber 4 is higher, the main power turbine 51 and the secondary power turbine 62 do work, and the power generation efficiency of the whole power generation type gas turbine is improved; when the driving rod 22 moves towards the outside of the air inlet 11, under the action of air resistance, the hinge plate 244 and the plate body 241 are opened, air leaks out from a gap between the hinge plate 244 and the plate body 241, the air resistance borne by the air blowing plate 24 is reduced, and the energy loss of the power generation type gas turbine during working is reduced; when the inclined sliding groove 211 is seriously worn, the inclined sliding groove 211 of the driving rod 22 contacting with the main shaft 21 can be replaced by adjusting the relative position of the fixed frame 23 and the inner wall of the machine shell 1, and the working efficiency of the air blower 2 is improved.
The air blower 2 continuously works to blow air with pressure larger than atmospheric pressure into the air inlet 11, so that the air with primary pressure enters the air compressor 3, the air compressor 3 pressurizes the air with pressure blown by the air blower 2 again and sends the air with higher pressure into the combustion chamber 4, the combustion chamber 4 mixes and combusts fuel and the air conveyed by the air compressor 3 and releases heat energy, hot air flow is generated at the combustion chamber 4 and flows through the main power turbine 51 to start thermal expansion to do work; meanwhile, the combustion chamber 4 generates hot air flow to drive the secondary power turbine 62 to rotate, and the secondary power turbine 62 is connected with the driving shaft 5 through the bearing 61, so that the secondary power turbine 62 and the driving shaft 5 do not synchronously rotate, the secondary power turbine 62 drives the side generator 65 to generate electricity through the annular bevel gear 63 and the bevel gear II 64, and a plurality of groups of side-generating motor sets are arranged, so that the kinetic energy of the hot air flow can be maximally utilized until the flow velocity of the hot air flow cannot drive the secondary power turbine 62 to rotate, the heat energy generated by the combustion chamber 4 is maximally utilized, and the generating efficiency of the power generation type gas turbine is improved; meanwhile, the tail gas with residual temperature will drift through the fuel injection pipe 41, so that the temperature of the fuel in the fuel injection pipe 41 is raised, the fuel sprayed from the fuel injection pipe 41 is easier to atomize, the temperature of the fuel is higher, and the working efficiency of the combustion chamber 4 is improved.
When the air blowing component is an automatic umbrella 25:
when the gas turbine works, the starting system is used for starting the power generation type gas turbine, after the driving shaft 5 has the initial speed, the starting system is closed, the driving shaft 5 drives the air blower 2 to work, the main shaft 21 starts to rotate, the inclined chute 211 on the main shaft 21 limits the position of the driving rod 22 to enable the driving rod 22 to reciprocate back and forth, the reciprocating motion of the driving rod 22 drives the air blowing component to blow air to the air inlet 11, and the air pressure entering the air inlet 11 is higher than the atmospheric pressure; when the driving rod 22 moves towards the inner side of the air inlet 11, the umbrella rod 253 moves along with the driving rod 22, the pulling rope 254 is stretched straight under the action of air resistance, the umbrella rib unit 251 is expanded at the umbrella rod 253, the umbrella cloth 252 blows air into the air inlet 11, and the air in the air inlet 11 is pressurized, so that the air in the air inlet 11 has initial pressure; when the driving rod 22 moves towards the outside of the air inlet 11, under the action of air resistance, the umbrella rib unit 251 is contracted at the umbrella rod 253, the resistance on the automatic folding and unfolding umbrella 25 is reduced, and the energy loss of the power generation type gas turbine during acting is reduced; when the inclined sliding groove 211 is seriously worn, the inclined sliding groove 211 of the driving rod 22 contacting with the main shaft 21 can be replaced by adjusting the relative position of the fixed frame 23 and the inner wall of the machine shell 1, and the working efficiency of the air blower 2 is improved.
The air blower 2 continuously works to blow air with pressure larger than atmospheric pressure into the air inlet 11, so that the air with primary pressure enters the air compressor 3, the air compressor 3 pressurizes the air with pressure blown by the air blower 2 again and sends the air with higher pressure into the combustion chamber 4, the combustion chamber 4 mixes and combusts fuel and the air conveyed by the air compressor 3 and releases heat energy, hot air flow is generated at the combustion chamber 4 and flows through the main power turbine 51 to start thermal expansion to do work; meanwhile, the combustion chamber 4 generates hot air flow to drive the secondary power turbine 62 to rotate, and the secondary power turbine 62 is connected with the driving shaft 5 through the bearing 61, so that the secondary power turbine 62 and the driving shaft 5 do not synchronously rotate, the secondary power turbine 62 drives the side generator 65 to generate electricity through the annular bevel gear 63 and the bevel gear II 64, and a plurality of groups of side generator sets are arranged, so that the kinetic energy of the hot air flow can be maximally utilized until the flow velocity of the hot air flow cannot drive the secondary power turbine 62 to rotate, the heat energy generated by the combustion chamber 4 can be maximally utilized, and the power generation efficiency of the power generation type gas turbine is improved; meanwhile, the tail gas with residual temperature will drift through the fuel injection pipe 41, so that the temperature of the fuel in the fuel injection pipe 41 is raised, the fuel sprayed from the fuel injection pipe 41 is easier to atomize, the temperature of the fuel is higher, and the working efficiency of the combustion chamber 4 is improved.
While one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.
(A) In the above embodiment, the casing inlet is heated by the exhaust gas residual heat in the circulation pipe, but the present invention is not limited thereto, and the casing inlet may be directly heated by fuel.
(B) In the above embodiment, the air in the intake port is filtered by providing the filter in the intake port, but the present invention is not limited thereto, and the air in the intake port may be filtered by providing the air filter in the intake port.
Industrial applicability
According to the invention, the power generation efficiency of the power generation type gas turbine is improved by reducing the replacement time of the worn bearing, reducing the replacement frequency of the bearing, improving the flexibility of the driving rod and the main shaft and filtering and heating the air entering from the air inlet, so that the power generation efficiency of a power plant is improved; therefore, the method for improving the power generation efficiency of the thermal power plant is useful in the technical field of thermal power generation.
Claims (1)
1. A method for improving the power generation efficiency of a thermal power plant is characterized in that: the method comprises the following steps:
the method comprises the following steps: replacing thermal power generation equipment of a thermal power plant with a power generation type gas turbine;
step two: after the thermal power generation equipment is replaced in the first step, a plurality of spare bearings (61) are installed on the driving shaft (5), so that the bearings (61) on the side generator set (6) can be replaced in time under the condition that the driving shaft (5) does not need to be detached after the bearings (61) on the side generator set (6) are seriously worn, the time for replacing the bearings (61) is saved, and all the bearings (61) can be replaced at one time after the bearings (61) on the side generator set (6) are seriously worn;
step three: after the arrangement of the bearing (61) in the power generation type gas turbine is completed in the second step, the bearing (61) on the side generator set (6) and the inclined sliding groove (211) on the surface of the main shaft (21) are lubricated comprehensively for one time, so that the abrasion of the bearing (61) is reduced, and the replacement frequency of the bearing (61) is reduced; the abrasion between the driving rod (22) and the main shaft (21) is reduced, the flexibility of the driving rod (22) sliding on the main shaft (21) is improved, and the work doing efficiency of the air blower (2) is further improved;
step four: after the third step is finished, a filter screen is added at the air inlet (11) of the power generation type gas turbine to filter air sucked by the air inlet (11), so that dust is prevented from entering the interior of the power generation type gas turbine to influence the power generation efficiency of the power generation type gas turbine;
step five: after the arrangement of the filter screens is completed in the fourth step, tail gas released from the gas outlet (12) is circulated to the outer wall of the gas inlet (11) of the machine shell (1) through the arranged circulating pipe, so that the waste heat of the tail gas in the circulating pipe heats the gas inlet (11) of the machine shell (1), and the gas inlet temperature of the gas inlet (11) is increased;
the power generation type gas turbine in the first step comprises a shell (1), a gas blower (2), a gas compressor (3), a combustion chamber (4), a driving shaft (5), a main power turbine (51), a main generator (52) and a side generator set (6), wherein the shell (1) comprises a gas inlet (11) and a gas outlet (12); the air inlet (11) is positioned at one end of the machine shell (1), and the air inlet (11) is used for sucking air; the air outlet (12) is positioned at the other end of the shell (1), and the air outlet (12) is used for discharging tail gas; the driving shaft (5) is limited in the center of the machine shell (1) through a shaft seat (13); the air blower (2) is positioned at the air inlet (11), the air blower (2) is connected with the driving shaft (5), and the air blower (2) is used for blowing air with pressure into the air inlet (11); the air compressor (3) is positioned beside the air blower (2), the air compressor (3) is connected with the driving shaft (5), and the air compressor (3) is used for pressurizing air with pressure blown by the air blower (2) again and sending the air with higher pressure into the combustion chamber (4); the combustion chamber (4) is positioned beside the air compressor (3), and the combustion chamber (4) mixes and combusts fuel and air conveyed by the air compressor (3) and releases heat energy; the main power turbine (51) is arranged on the driving shaft (5), the main power turbine (51) is located beside the combustion chamber (4), and the main power turbine (51) is used for converting heat energy generated by the combustion chamber (4) into kinetic energy for rotating the main power turbine (51); the main generator (52) is rotationally connected with the driving shaft (5), and the main generator (52) is used for converting kinetic energy generated by rotation of the driving shaft (5) into electric energy; the side generator set (6) is connected with the driving shaft (5), and the side generator set (6) receives heat energy generated by the combustion chamber (4) and converts the heat energy into kinetic energy so as to convert the kinetic energy into electric energy; wherein,
the air blower (2) comprises a main shaft (21), a driving rod (22), a fixing frame (23) and an air blowing component, wherein the main shaft (21) is fixedly connected with the driving shaft (5), and a circle of inclined sliding groove (211) is arranged on the surface of the main shaft (21); the fixed frame (23) is detachably and fixedly connected with the inner wall of the shell (1); the driving rod (22) is connected with the fixed frame (23) in a sliding manner, and the lower end of the driving rod (22) extends into an inclined sliding groove (211) of the main shaft (21); the air blowing component is connected with the end part of the driving rod (22);
the side generator set (6) comprises a bearing (61), a secondary power turbine (62), an annular bevel gear (63), a bevel gear II (64) and a side generator (65), wherein the bearing (61) is sleeved on the driving shaft (5); the secondary power turbine (62) has the same structure as the main power turbine (51), and the secondary power turbine (62) is fixed on the outer ring of the bearing (61); the annular bevel gear (63) is sleeved on the outer side of the secondary power turbine (62), the annular bevel gear (63) is fixedly connected with the outer side of the secondary power turbine (62), and the annular bevel gear (63) is meshed with the bevel gear II (64); the bevel gear II (64) is connected with a side generator (65);
the combustion chamber (4) generates hot air flow to drive the secondary power turbine (62) to rotate, the secondary power turbine (62) is connected with the driving shaft (5) through the bearing (61), so that the secondary power turbine (62) and the driving shaft (5) do not rotate synchronously, the secondary power turbine (62) drives the side generator (65) to generate electricity through the annular bevel gear (63) and the bevel gear II (64), and a plurality of groups of side-generating motor units are arranged, so that the kinetic energy of the hot air flow can be utilized to the maximum extent until the flow velocity of the hot air flow cannot drive the secondary power turbine (62) to rotate, the heat energy generated by the combustion chamber (4) is utilized to the maximum extent, and the generating efficiency of the power generation type gas turbine is improved;
the air blowing component is an air blowing plate (24); the shape of the air blowing plate (24) is an elliptic hemispherical shell; the air blowing plate (24) comprises a plate body (241), a hinge part (242), a spring (243) and a hinge plate (244), wherein the plate body (241) is fixedly connected with the end part of the driving rod (22), the plate body (241) is an elliptic hemispherical shell framework, and the elliptic hemispherical shell framework is of a net structure; the hinge parts (242) are arranged in plurality, the hinge parts (242) are uniformly distributed on the plate body (241), the hinge parts (242) are fixedly connected with the plate body (241), and the upper ends of the hinge parts (242) are provided with convex ribs (242 a); the hinge plate (244) performs opening and closing movement on the plate body (241), one end of the hinge plate (244) is hinged with the hinge part (242), and the other end of the hinge plate (244) abuts against a convex rib (242a) of the hinge part (242) adjacent to the lower end; one end of the spring (243) is fixedly connected with the hinge part (242), and the other end of the spring (243) is fixedly connected with the hinge plate (244);
or the air blowing component is an automatic umbrella (25); the automatic retractable umbrella (25) comprises an umbrella rib unit (251), umbrella cloth (252), an umbrella rod (253) and a pull rope (254), wherein the umbrella rod (253) is in a round rod shape with one large end and the other small end; the umbrella rib units (251) are hinged with the small end of the umbrella rod (253), and the umbrella rib units (251) surround the umbrella rod (253) to form a circle; the umbrella cloth (252) is attached to the inner side of the umbrella rib unit (251), and the umbrella cloth (252) is fixedly connected with the umbrella rib unit (251); one end of the pull rope (254) is tied with the end part of the umbrella frame unit (251), and the other end of the pull rope (254) is tied with the middle part of the umbrella rod (253); the big end of the umbrella rod (253) is fixedly connected with the driving rod (22);
a plurality of standby inclined sliding grooves (211) are formed in the main shaft (21); when the inclined sliding groove (211) is seriously worn, the inclined sliding groove (211) of the driving rod (22) contacted with the main shaft (21) can be replaced by adjusting the relative position of the fixed frame (23) and the inner wall of the shell (1), so that the working efficiency of the air blower (2) is improved;
an oil injection pipe (41) is arranged in the combustion chamber (4); a tail gas side outlet is formed in the position of the gas outlet (12) of the shell (1); a tail gas pipe (42) is arranged at the end part of the tail gas side outlet; the tail gas pipe (42) extends to the oil injection pipe (41) and wraps the oil injection pipe (41) from the outside of the oil injection pipe (41); tail gas with residual temperature floats through the oil injection pipe (41), so that the temperature of fuel in the oil injection pipe (41) is increased, the fuel sprayed by the oil injection pipe (41) is easier to atomize, the temperature is higher when the fuel is combusted, and the working efficiency of the combustion chamber (4) is improved;
the inner wall of the annular bevel gear (63) is an inclined wall (631), one end of the inclined wall (631) is flush with the inner wall of the machine shell (1), and the other end of the inclined wall (631) is positioned on the inner side of the inner wall of the machine shell (1);
the inner wall of the shell (1) is provided with a heat insulation layer, the heat insulation layer is used for reducing heat loss generated by the combustion chamber (4), and the heat insulation layer is a ceramic heat insulation layer;
the heat insulation layer covers the surface of the driving shaft (5), the surface of the main power turbine (51) and the surface of the secondary power turbine (62);
when the air-blowing component is an air-blowing plate (24):
when the gas turbine works, the starting system is used for starting the power generation type gas turbine, after the driving shaft (5) has the initial speed, the starting system is closed, the driving shaft (5) drives the air blower (2) to work, the main shaft (21) starts to rotate, the inclined chute (211) on the main shaft (21) limits the position of the driving rod (22) to enable the driving rod (22) to reciprocate back and forth, the reciprocating motion of the driving rod (22) drives the air blowing component to blow air to the air inlet (11), and the air pressure entering the air inlet (11) is higher than the atmospheric pressure; when the driving rod (22) moves towards the inner side of the air inlet (11), the hinge plate (244) is abutted against the convex rib (242a) under the elastic force of the spring (243), the hinge plate (244) is abutted against the plate body (241), the whole air blowing plate (24) is closed, and the air blowing plate (24) blows air into the air inlet (11), so that the air at the air inlet (11) has initial pressure, the air pressure entering the combustion chamber (4) is higher, the main power turbine (51) and the secondary power turbine (62) do work, and the power generation efficiency of the whole power generation type gas turbine is improved; when the driving rod (22) moves towards the outer side of the air inlet (11), under the action of air resistance, the hinge plate (244) and the plate body (241) are opened, air leaks out from a gap between the hinge plate (244) and the plate body (241), air resistance borne by the air blowing plate (24) is reduced, and energy loss of the power generation type gas turbine during working is reduced;
the air blower (2) continuously works to blow air with pressure larger than atmospheric pressure into the air inlet (11), so that the air with primary pressure enters the air compressor (3), the air compressor (3) pressurizes the air with pressure blown by the air blower (2) again and sends the air with higher pressure into the combustion chamber (4), the combustion chamber (4) mixes and combusts fuel and the air conveyed by the air compressor (3) and releases heat energy, hot air flow is generated at the combustion chamber (4), and the hot air flow flows through the main power turbine (51) to start thermal expansion to do work; meanwhile, the combustion chamber (4) generates hot air flow to drive the secondary power turbine (62) to rotate, and the secondary power turbine (62) is connected with the driving shaft (5) through the bearing (61), so that the secondary power turbine (62) and the driving shaft (5) do not rotate synchronously, the secondary power turbine (62) drives the side generator (65) to generate electricity through the annular bevel gear (63) and the bevel gear II (64), and a plurality of groups of side-generating generator sets are arranged, so that the kinetic energy of the hot air flow can be utilized to the maximum extent until the flow velocity of the hot air flow cannot drive the secondary power turbine (62) to rotate, the heat energy generated by the combustion chamber (4) is utilized to the maximum extent, and the generating efficiency of the power generation type gas turbine is improved;
when the air blowing component is an automatic umbrella (25):
when the gas turbine works, the starting system is used for starting the power generation type gas turbine, after the driving shaft (5) has the initial speed, the starting system is closed, the driving shaft (5) drives the air blower (2) to work, the main shaft (21) starts to rotate, the inclined chute (211) on the main shaft (21) limits the position of the driving rod (22) to enable the driving rod (22) to reciprocate back and forth, the reciprocating motion of the driving rod (22) drives the air blowing component to blow air to the air inlet (11), and the air pressure entering the air inlet (11) is higher than the atmospheric pressure; when the driving rod (22) moves towards the inner side of the air inlet (11), the umbrella rod (253) moves along with the driving rod (22), under the action of air resistance, the pulling rope (254) is stretched straight, the umbrella rib unit (251) is expanded at the position of the umbrella rod (253), the umbrella cloth (252) blows air into the air inlet (11), and air in the air inlet (11) is pressurized, so that the air in the air inlet (11) has initial pressure; when the driving rod (22) moves towards the outer side of the air inlet (11), under the action of air resistance, the umbrella rib unit (251) is contracted at the umbrella rod (253), the resistance on automatically folding and unfolding the umbrella (25) is reduced, and the energy loss of the power generation type gas turbine during acting is reduced;
the air blower (2) continuously works to blow air with pressure larger than atmospheric pressure into the air inlet (11), so that the air with primary pressure enters the air compressor (3), the air compressor (3) pressurizes the air with pressure blown by the air blower (2) again and sends the air with higher pressure into the combustion chamber (4), the combustion chamber (4) mixes and combusts fuel and the air conveyed by the air compressor (3) and releases heat energy, hot air flow is generated at the combustion chamber (4), and the hot air flow flows through the main power turbine (51) to start thermal expansion to do work; meanwhile, the combustion chamber (4) generates hot air flow to drive the secondary power turbine (62) to rotate, and the secondary power turbine (62) is connected with the driving shaft (5) through the bearing (61), so that the secondary power turbine (62) and the driving shaft (5) do not rotate synchronously, the secondary power turbine (62) drives the side generator (65) to generate electricity through the annular bevel gear (63) and the bevel gear II (64), and a plurality of groups of side generator sets are arranged, so that the kinetic energy of the hot air flow can be utilized to the maximum extent until the flow velocity of the hot air flow cannot drive the secondary power turbine (62) to rotate, the heat energy generated by the combustion chamber (4) is utilized to the maximum extent, and the electricity generation efficiency of the electricity generation type gas turbine is improved.
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| CN1304740C (en) * | 1999-06-10 | 2007-03-14 | 涡轮动力输出控股有限责任公司 | Supercharging system for gas turbines |
| GB2409936B (en) * | 2001-02-09 | 2005-09-14 | Rolls Royce Plc | Gas turbine with electrical machine |
| CN1888403A (en) * | 2005-06-30 | 2007-01-03 | 李志文 | Piston type gas combustion turbine engine |
| EP2392684A1 (en) * | 2010-06-02 | 2011-12-07 | Siemens Aktiengesellschaft | Alloy, protective layer and component |
| US20160376908A1 (en) * | 2015-06-29 | 2016-12-29 | General Electric Company | Power generation system exhaust cooling |
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Effective date of registration: 20210325 Address after: 335400 Guixi Power Plant, Yingtan City, Jiangxi Province Applicant after: GUIXI POWER GENERATION Co.,Ltd. Address before: 518057 South Building Pulian Technology Co., Ltd., No.5 Keyuan Road, Science Park, Nanshan District, Shenzhen City, Guangdong Province Applicant before: Chang Kanghua |
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