Multifunction burning gas-turbine fuel control unit based on PLC
Technical field
It is specifically the multifunction burning gas-turbine fuel control unit based on PLC the present invention relates to gas turbine field.
Background technology
Gas turbine is a kind of is converted to the rotary power of mechanical work using the gas that continuously flows as working medium, heat energy
Machinery.In air and the main flow of combustion gas, the only combustion gas of this three big part composition of compressor, combustion chamber and combustion gas turbine
Turbine is circulated, and is commonly referred to as simple cycle.Most of gas turbines use simple cycle scheme.Because its structure is most simple,
And best embody out small volume specific to gas turbine, it is lightweight, start it is fast, few a series of excellent with or without cooling water etc.
Point.Compressor sucks air from ambient atmosphere environment, and process axial-flow compressor compresses be allowed to be pressurized step by step, while Air Temperature
Degree is also corresponding to be improved;Compressed air is pressed to the gas that fuel mixed combustion of the combustion chamber with spraying into generates HTHP;So
After enter back into expansion work in turbine, promote turbine to drive compressor and the rotation of the outer superhigh speed of load rotor one, realize gas
The chemical energy of body or liquid fuel is partially converted into mechanical work, and exports electric work.The waste gas discharged from turbine drains into air certainly
Right heat release.So, the chemical energy of fuel is just converted into heat energy by gas turbine, and partial heat energy is transformed into mechanical energy.Combustion gas
Combustion chamber ignition reliability is mainly determined by the factor such as fuel and air ratio, air velocity when turbine is started, and current
Fuel is difficult to accurately match fuel and air ratio with air mixed control apparatus in gas-turbine combustion chamber, more can not basis
Different operating modes carries out detecting, adjust and matching in real time to fuel in combustion chamber and air ratio, it is impossible to realize fuel and sky
Gas mixing optimal target in real time, combustion chamber ignition poor reliability when causing the existing gas turbine to start, gas turbine is from starting
To slow train process there is also the configuration equivalent of fuel and air it is unreasonable the problems such as, the igniting for seriously hindering gas turbine is reliable
Property.The course of work of gas turbine is that compressor continuously sucks air and compressed it from air;Air after compression enters
Enter combustion chamber, the fuel mixing after-combustion with penetrating as high-temperature fuel gas, flows into expansion work in gas turbine, promoted immediately
Turbine wheel rotates together with compressor impeller.It is high when gas turbine just starts to start or combustion gas, air mass flow are smaller
Warm combustion gas expansion work will be seldom, and because compressor impeller is used for compressed air, turbine wheel is difficult with compressor impeller
The central rotating shaft stalling for rotating and causing together is got stuck, so as to cause failure, can be caused when serious after being connected with gas turbine
The accident of continuous machine.
The content of the invention
It is an object of the invention to provide the multifunction burning gas-turbine fuel control unit based on PLC, it can be according to need
Accurately to match fuel and air ratio, fuel in combustion chamber and air ratio are carried out according to different operating modes real-time
Detection, adjustment and matching, realize that fuel mixes target optimal in real time with air;Moreover, when gas turbine just start start or
When person's combustion gas, air mass flow are smaller, preferably power can be provided to air compressor, it is ensured that the normal of gas turbine is used.
The present invention to achieve the above object, is achieved through the following technical solutions:
Multifunction burning gas-turbine fuel control unit based on PLC, including base, support frame, power cavity, air compression
Passed in machine, combustion chamber, turbine area, air induction system assembly and fuel delivery system assembly, the power cavity provided with bevel gear
Provided with the additional motor being connected with bevel gearing, the air compressor, burning at the top of dynamic device, the power cavity
Central rotating shaft is provided with room, turbine area, the air compressor enters pipe provided with air, be provided with the air compressor with
The compressor impeller of central rotating shaft connection, be provided with the combustion chamber in burner nozzle assembly, the turbine area be provided with turbine with
Gas outlet, the burner nozzle assembly includes outer tube body, interior tube body and sealing end cap, and the outer tube body enters provided with air
Mouthful, said inner tube body is arranged at sealing end and covered, and side is provided with the fuel nozzle being adapted with air intlet in said inner tube body,
The sealing end outer side of lid is provided with connecting seat, and the air induction system assembly includes air filtering box and air duct, described
Air blower is provided with air filtering box, the air duct is provided with air Electromagnetic Control valve and air flow control valve,
The one end of the air duct away from air filtering box is connected with air into pipe, and the fuel delivery system assembly includes combustion gas
Passage, fuel gallery, hydrocarbon filter case, combustion gas enter pipe, fuel oil and enter pipe and connection Oil/Gas Pipe, the blast tube, oil gas
Rose Box, combustion gas are sequentially connected into pipe, and the combustion gas enters pipe and controlled provided with combustion gas Electromagnetic Control valve and gas flow
Valve, the fuel gallery, hydrocarbon filter case, fuel oil are sequentially connected into pipe, and the fuel oil enters pipe and is provided with electromagnetic fuel
Control valve and fuel flow control system (FFCS) door, the combustion gas enters pipe, fuel oil and is connected into Guan Junyu connection Oil/Gas Pipes, described
Fuel oil enters pipe with being connected Oil/Gas Pipe junction provided with fuel atomizer, and the connection Oil/Gas Pipe passes through connecting seat and interior tube body
It is connected, the air Electromagnetic Control valve, air flow control valve, combustion gas Electromagnetic Control valve, gas flow control valve
Door, electromagnetic fuel control valve and the connection of fuel flow control system (FFCS) Men Junyu PLC control systems.
Provided with connection opening in the combustion chamber, opening capping, the opening envelope are threaded with the connection opening
Cover provided with welded tube, the welded tube is welded and fixed with outer tube body.
The connecting seat is provided with fastening cranse.
It is provided with gear-box in the power cavity, the bevel gearing includes main shaft, drive bevel gear and from mantle
Gear, the additional motor is connected by main shaft and drive bevel gear, and the drive bevel gear is mutually nibbled with driven wheel of differential
Close, be provided with the driven shaft being fixedly connected with driven wheel of differential on the central rotating shaft close to gear-box one end.
Prior art is contrasted, the beneficial effects of the present invention are:
1st, the present apparatus by PLC control system to air Electromagnetic Control valve, air flow control valve, combustion gas electromagnetism control
Valve processed, gas flow control valve door, electromagnetic fuel control valve and fuel flow control system (FFCS) door are controlled in real time, so that right
The discharge matching ratio of fuel oil, combustion gas and air is controlled in real time, also can by PLC control system according to different operating modes to combustion
Burn fuel in room to carry out detecting, adjust and matching in real time with air ratio, realize that fuel mixes mesh optimal in real time with air
Mark;If moreover, fuel oil directly enters pipe, connection Oil/Gas Pipe from fuel oil enters interior tube body, when being sprayed from fuel nozzle, often
It can be formed than larger drop, so, fuel oil just can not uniformly be mixed with air, thus can not sufficiently be burnt, and be had
A part of fuel droplets are discharged into air by the high temperature runner and chimney that combustion gas is carried through turbine area.So not only reduce burning
Efficiency, increases unit oil consumption, it is also possible to oil droplet occurs and is burnt on the part of high-temperature fuel gas runner, causes these parts local
The situation that overtemperature is burned, by entering pipe with being connected Oil/Gas Pipe junction setting fuel atomizer in fuel oil, can make combustion
Mist of oil is melted into mist of oil, then enters interior tube body by connecting Oil/Gas Pipe again, and mist of oil sprays from fuel nozzle, and mist of oil can be with sky
Gas uniformly mixes, fully burnt, and is so significantly improved ignition success rate and efficiency of combustion, effectively avoids high-temperature fuel gas
The situation that flow path features are burnt out by local overheating.Moreover, the present apparatus is additionally provided with bevel gearing and additional motor, work as combustion gas
, can be preferably to air compressor offer power, it is ensured that combustion gas when turbine just starts to start or combustion gas, air mass flow are smaller
The normal of turbine is used.
2nd, provided with connection opening in combustion chamber, connect and opening capping is threaded with opening, opening capping can facilitate
From connection opening on remove, be easy to burner nozzle assembly carry out maintenance of clean-up.
3rd, connecting seat is provided with fastening cranse, the banding connecting seat that can more fasten, it is to avoid the company of transport high-pressure gas
Oil/Gas Pipe is connect to come off from connecting seat.
Brief description of the drawings
Accompanying drawing 1 is concrete structure schematic diagram of the present invention.
Accompanying drawing 2 is burner nozzle assembly structure schematic diagram in the present invention.
Label shown in accompanying drawing:
1st, base;2nd, support frame;3rd, power cavity;4th, air compressor;5th, combustion chamber;6th, turbine area;7th, additional motor;8、
Central rotating shaft;9th, air enters pipe;10th, compressor impeller;11st, burner nozzle assembly;12nd, turbine;13rd, gas outlet;14th, it is outer
Body;15th, interior tube body;16th, end cap is sealed;17th, air intlet;18th, fuel nozzle;19th, connecting seat;20th, air filtering box;
21st, air duct;22nd, air Electromagnetic Control valve;23rd, air flow control valve;24th, blast tube;25th, fuel gallery;
26th, hydrocarbon filter case;27th, combustion gas enters pipe;28th, fuel oil enters pipe;29th, Oil/Gas Pipe is connected;30th, combustion gas Electromagnetic Control valve;
31st, gas flow control valve door;32nd, electromagnetic fuel control valve;33rd, fuel flow control system (FFCS) door;34th, fuel atomizer;
35th, connection opening;36th, opening capping;37th, welded tube;38th, cranse is fastened;39th, gear-box;40th, main shaft;41st, drive bevel gear;
42nd, driven wheel of differential;43rd, driven shaft;44th, PLC control system.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within scope defined herein.
Of the present invention is the multifunction burning gas-turbine fuel control unit based on PLC, and agent structure includes base 1, branch
Support 2, power cavity 3, air compressor 4, combustion chamber 5, turbine area 6, air induction system assembly and fuel delivery system assembly,
Bevel gearing is provided with the power cavity 3, the top of power cavity 3 is additional provided with what is be connected with bevel gearing
Motor 7, in the prior art, when gas turbine just starts to start or fuel, air mass flow are smaller, high-temperature fuel gas expansion work
Will be seldom, because compressor impeller 10 is used for compressed air, the impeller of turbine 12 is difficult to be rotated together with compressor impeller 10
And the stalling of central rotating shaft 8 caused is got stuck, so as to cause failure, the follow-up machine that is connected with gas turbine can be caused when serious
Accident, the present apparatus is provided with bevel gearing and additional motor 7, when gas turbine just starts to start or combustion gas, air stream
When amount is smaller, preferably power can be provided to air compressor 4, it is ensured that the normal of gas turbine is used.The air compression
Machine 4, combustion chamber 5, turbine area 6 are interior provided with central rotating shaft 8, and the air compressor 4 enters pipe 9, the air provided with air
Provided with the compressor impeller 10 being connected with central rotating shaft 8 in compressor 4, compressor impeller 10 is used for compressed air, makes air
Density increases, temperature rise, is more beneficial for igniting.It is provided with the combustion chamber 5 in burner nozzle assembly 11, the turbine area 6
Provided with turbine 12 and gas outlet 13, air compressor 4 sucks air from ambient atmosphere environment, and by compressor impeller 10 by
Level compression is allowed to be pressurized, while air themperature is also accordingly improved, the fuel that compressed air is pressed to combustion chamber 5 with spraying into is mixed
The gas of burning generation HTHP, then enters back into expansion work in turbine area 6, realizes the change of gas or liquid fuel
Can be partially converted into mechanical work, and export electric work.The waste gas discharged from turbine area 6 drains into the natural heat release of air.So, fire
The chemical energy of fuel is just converted into heat energy by gas-turbine, and partial heat energy is transformed into mechanical energy.The burner nozzle assembly 11
Including outer tube body 14, interior tube body 15 and sealing end cap 16, the outer tube body 14 is provided with air intlet 17, and compressed air is from air
Import 17 is entered in outer tube body 14, with fuel mixing ignition.Said inner tube body 15 is arranged on sealing end cap 16, and described interior
The inner side of body 15 is provided with the fuel nozzle 18 being adapted with air intlet 17, and combustion gas or atomized fuel are discharged at fuel nozzle 18
Into outer tube body 14.The outside of sealing end cap 16 is provided with connecting seat 19, and the air induction system assembly includes air filtration
Air blower is provided with case 20 and air duct 21, the air filtering box 20, air filtering box 20 is used to filter air,
Debris is avoided to enter air duct 21.Air blower blows air into air duct 21.The air duct 21 is provided with sky
Pneumoelectric magnetic control valve 22 and air flow control valve 23, air Electromagnetic Control valve 22 and air flow control valve 23 lead to
PLC control system 44 is crossed to control, can be according to the flow and property of fuel, to control the flow of air, so as to fuel and sky
The discharge matching ratio of gas is controlled in real time.The one end of the air duct 21 away from air filtering box 20 enters pipe 9 with air
Connection, the fuel delivery system assembly include blast tube 24, fuel gallery 25, hydrocarbon filter case 26, combustion gas enter pipe 27,
Fuel oil enters pipe 28 and connection Oil/Gas Pipe 29, and the blast tube 24, hydrocarbon filter case 26, combustion gas are sequentially connected into pipe 27,
The combustion gas enter pipe 27 provided with combustion gas Electromagnetic Control valve 30 and gas flow control valve door 31, the fuel gallery 25,
Hydrocarbon filter case 26, fuel oil are sequentially connected into pipe 28, and the fuel oil enters pipe 28 and is provided with the He of electromagnetic fuel control valve 32
Fuel flow control system (FFCS) door 33, the combustion gas enters pipe 27, fuel oil and is connected into pipe 28 with being connected Oil/Gas Pipe 29, the combustion
Oil enters pipe 28 with being connected the junction of Oil/Gas Pipe 29 provided with fuel atomizer 34, by entering pipe 28 with being connected oil gas in fuel oil
The junction of pipe 29 sets fuel atomizer 34, and fuel-oil atmozation can be made into mist of oil, then entered again by connecting Oil/Gas Pipe 29
To interior tube body 15, mist of oil sprays from fuel nozzle 18, and mist of oil can uniformly mix with air, fully burn, and thus significantly carry
High ignition success rate and efficiency of combustion, effectively avoid the situation that high-temperature fuel gas runner part is burnt out by local overheating.Institute
State connection Oil/Gas Pipe 29 by connecting seat 19 with interior tube body 15 to be connected, the air Electromagnetic Control valve 22, air mass flow control
Valve 23 processed, combustion gas Electromagnetic Control valve 30, gas flow control valve door 31, electromagnetic fuel control valve 32 and fuel flow control
Valve 33 processed is connected with PLC control system 44.The present apparatus is by PLC control system 44 to air Electromagnetic Control valve 22, sky
Flow control valves door 23, combustion gas Electromagnetic Control valve 30, gas flow control valve door 31, electromagnetic fuel control valve 32 and combustion
Oil flow control valve door 33 is controlled in real time, so that the discharge matching ratio of fuel oil, combustion gas and air is controlled in real time,
Fuel in combustion chamber 5 and air ratio can detect in real time according to different operating modes by PLC control system 44, adjusted
And matching, realize that fuel mixes target optimal in real time with air.
Provided with connection opening 35 in the combustion chamber 5, opening capping 36 is threaded with the connection opening 35, it is described
Opening capping 36 is provided with welded tube 37, and the welded tube 37 is welded and fixed with outer tube body 14.Opening capping 36 can be easily from even
Connect and removed in opening 35, be easy to carry out maintenance of clean-up to burner nozzle assembly 11.
The connecting seat 19 is provided with fastening cranse 38.The banding connecting seat 19 that fastening cranse 38 can be fastened more, keeps away
The connection Oil/Gas Pipe 29 for exempting to transport high-pressure gas comes off from connecting seat 19.
Gear-box 39 is provided with the power cavity 3, the bevel gearing includes main shaft 40, the and of drive bevel gear 41
Driven wheel of differential 42, the additional motor 7 is connected by main shaft 40 with drive bevel gear 41, the drive bevel gear 41 with
Driven wheel of differential 42 is meshed, and is provided with and is fixedly connected with driven wheel of differential 42 close to the one end of gear-box 39 on the central rotating shaft 8
Driven shaft 43.When gas turbine just starts to start or combustion gas, air mass flow are smaller, bevel gearing and additional electrical
Machine 7 preferably can provide power to air compressor 4, it is ensured that the normal of gas turbine is used.
Embodiment:
Of the present invention is the multifunction burning gas-turbine fuel control unit based on PLC, and agent structure includes base 1, branch
Support 2, power cavity 3, air compressor 4, combustion chamber 5, turbine area 6, air induction system assembly and fuel delivery system assembly,
Bevel gearing is provided with the power cavity 3, the top of power cavity 3 is additional provided with what is be connected with bevel gearing
Motor 7, the air compressor 4, combustion chamber 5, turbine area 6 are interior provided with central rotating shaft 8, and the air compressor 4 is provided with sky
Gas enters pipe 9, and the air enters pipe 9 and is provided with 8 along the side wall center annular array of combustion chamber 5.The air compression
Provided with the compressor impeller 10 being connected with central rotating shaft 8 in machine 4, air is entered after air compressor 4, in compressor impeller 10
In the presence of compress step by step, the pressure-air after compression is drained into combustion chamber 5.Burner nozzle assembly is provided with the combustion chamber 5
11, fuel mixes combining combustion in burner nozzle assembly 11 with compressed air, and the high-temperature fuel gas after burning sprays acting again.It is described
Turbine 12 and gas outlet 13 are provided with turbine area 6, the burner nozzle assembly 11 includes outer tube body 14, interior tube body 15 and sealing
End cap 16, the outer tube body 14 is provided with air intlet 17, and said inner tube body 15 is arranged on sealing end cap 16, if needing only to
When changing and clearing up interior tube body 15, directly sealing end cap 16 can be pulled down, so that replacing cleaning is carried out to interior tube body 15, without
Opening capping 36 must be pulled down, whole burner nozzle assembly 11 is pulled down, when carrying out Cleaning of Parts replacing to burner nozzle assembly 11
More facilitate.And the inner side of said inner tube body 15 is provided with the fuel nozzle 18 being adapted with air intlet 17, the sealing end cap 16
Outside is provided with connecting seat 19, and the air induction system assembly includes air filtering box 20 and air duct 21, the air mistake
Air blower is provided with filter box 20, the air duct 21 is provided with air Electromagnetic Control valve 22 and air flow control valve
23, the one end of the air duct 21 away from air filtering box 20 is connected with air into pipe 9, the fuel delivery system assembly
Enter pipe 27, fuel oil including blast tube 24, fuel gallery 25, hydrocarbon filter case 26, combustion gas and enter pipe 28 and connection Oil/Gas Pipe
29, the blast tube 24, hydrocarbon filter case 26, combustion gas are sequentially connected into pipe 27, and the combustion gas enters pipe 27 provided with combustion
Pneumoelectric magnetic control valve 30 and gas flow control valve door 31, the fuel gallery 25, hydrocarbon filter case 26, fuel oil enter pipe 28
It is sequentially connected, the fuel oil enters pipe 28 provided with electromagnetic fuel control valve 32 and fuel flow control system (FFCS) door 33, the combustion
Gas enters pipe 27, fuel oil and is connected into pipe 28 with being connected Oil/Gas Pipe 29, and the fuel oil enters pipe 28 with being connected Oil/Gas Pipe 29
Junction is provided with fuel atomizer 34, and the connection Oil/Gas Pipe 29 is connected by connecting seat 19 with interior tube body 15, the sky
Pneumoelectric magnetic control valve 22, air flow control valve 23, combustion gas Electromagnetic Control valve 30, gas flow control valve door 31, combustion
Electromagnetic oil control valve 32 and fuel flow control system (FFCS) door 33 are connected with PLC control system 44.Provided with company in the combustion chamber 5
Connect and be threaded with opening capping 36 at opening 35, the connection opening 35, the opening capping 36 is provided with welded tube 37, described
Welded tube 37 is welded and fixed with outer tube body 14.The connecting seat 19 is provided with fastening cranse 38.Gear-box is provided with the power cavity 3
39, the bevel gearing includes main shaft 40, drive bevel gear 41 and driven wheel of differential 42, and the additional motor 7 passes through
Main shaft 40 is connected with drive bevel gear 41, and the drive bevel gear 41 is meshed with driven wheel of differential 42, and the center turns
The driven shaft 43 being fixedly connected with driven wheel of differential 42 is provided with axle 8 close to the one end of gear-box 39.