CN207740086U - A kind of gas turbine self-regulation fueller - Google Patents
A kind of gas turbine self-regulation fueller Download PDFInfo
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- CN207740086U CN207740086U CN201721770398.2U CN201721770398U CN207740086U CN 207740086 U CN207740086 U CN 207740086U CN 201721770398 U CN201721770398 U CN 201721770398U CN 207740086 U CN207740086 U CN 207740086U
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Abstract
The utility model discloses a kind of gas turbine self-regulation fuellers, including pressure-difference valve, rotating speed and altimetric compensation device, the fuel inlet of pressure-difference valve and the fuel supply pipeline connection of upstream, the right end top of the pipeline connection towards fuel nozzle of fuel outlet and downstream, the valve core link rod stretching valve body of pressure-difference valve is connect with the rotating speed and altimetric compensation device being arranged on the right side of outside pressure-difference valve；It is mounted on before fuel nozzle in fuel system, it can be according to fuel delivery of the pressure automatic adjustment fuel system to gas turbine after environment atmospheric pressure and compressor, ensure the continual and steady fuel feeding of fuel system and the safe and stable operation of gas turbine, meanwhile, it is capable to ensure that gas turbine starts successfully in different altitude height.
Description
Technical field
The utility model is related to gas turbine fuel system technical fields, particularly, are related to a kind of gas turbine self-regulation
Fueller.
Background technology
In certain height above sea level, gas turbine starts in accelerator, and compressor delivery pressure is stepped up, and just needs at this time
That fuel feeding is increased according to control system command adapted thereto to the more fuel oils of combustion chamber spray, existing gas turbine fuel system,
The fuel system cannot quickly increase according to gas turbine rotary speed, the variation of pressure rise persistently adjusts fuel delivery after compressor.
More, when gas turbine is started in different altitude height, because import atmospheric pressure is different, starting fuel supply is different, needs at this time
The fuel supply rate curve in control system is changed according to different altitude height, this makes gas turbine be used in different altitude height
When, it needs to write different fuel supply rate curves in control system, considerably increases the development of control system.So practical new
A kind of device that fuel feeding can be automatically adjusted according to pressure change after environment atmospheric pressure and compressor of type starts gas turbine
It is significant that accelerator quickly, persistently adjusts fuel delivery.Meanwhile this device can greatly improve gas turbine in difference
Height above sea level work when control system in fuel supply rate curve applicability.
Utility model content
For the drawbacks described above and deficiency of the prior art, the utility model provides a kind of gas turbine self-regulation fuel feeding dress
It sets, is mounted on before fuel nozzle, can be automatically adjusted according to pressure after environment atmospheric pressure and compressor in fuel system
Fuel delivery of the fuel system to gas turbine ensures the continual and steady fuel feeding of fuel system and the safety and stability fortune of gas turbine
Row, meanwhile, it is capable to ensure that gas turbine starts successfully in different altitude height.
The utility model is that technical solution used by solving its technical problem is：
A kind of gas turbine self-regulation fueller, including pressure-difference valve, rotating speed and altimetric compensation device, feature exist
In,
-- the pressure-difference valve includes valve body and spool, and the spool can horizontally slip in the inner cavity of valve body, wherein
The left end of the valve body is equipped with the oil-through-hole that is connected to its inner cavity, the oil-through-hole to introduce hydraulic fluid pressure,
The right end peripheral wall of the valve body is equipped with fuel inlet, the fuel supply pipeline connection of the fuel inlet and upstream, the valve
The middle part of body is equipped with fuel outlet, the pipeline connection towards fuel nozzle of the fuel outlet and downstream；
Spring is arranged in the left bottom of the spool, and valve core link rod is arranged in right hand top, described in the valve core link rod stretches out
It is connect with the rotating speed and altimetric compensation device being arranged on the right side of outside the pressure-difference valve at the top of the right end of valve body；
-- the rotating speed and altimetric compensation device include shell and setting diaphragm in the housing, resetting spring, it is horizontal even
Bar, adjusting rod, bellows, wherein
The rotating speed and the inner cavity of the shell of altimetric compensation device include upper cavity, lower chamber and are connected to upper cavity and cavity of resorption
The connection cavity of body, in the upper cavity, the bellows is arranged horizontally in the lower chamber diaphragm arrangement, described
Adjusting rod is vertically hinged in the connection cavity；
The upper cavity is divided into left part upper cavity and right part upper cavity by the diaphragm, and the resetting spring is horizontally disposed
In the right part upper cavity, the back-moving spring top is against the right side of the diaphragm, and the right part upper cavity is equipped with and leads to
Stomata, the venthole introduce pressure after compressor；The left part upper cavity is connected to cavity and the lower chamber of being connected to, and
At least one of the left part upper cavity, connection cavity, lower chamber are equipped with venthole, which introduces ambient atmosphere pressure
Power；
The diaphragm passes on left the waling stripe being arranged in the left part upper cavity and the adjusting rod
The upper end left side of connection on the right side of upper end, the adjusting rod is connect with the valve core link rod of the pressure-difference valve, the adjusting rod
It is connect with the top of the bellows on the right side of lower end.
Preferably, hydraulic fluid pressure and spring force are born on the left of the spool, fuel pressure and described is born on right side
Rotating speed and altimetric compensation device move left and right the thrust of the valve core link rod, the spool under left and right sides differential pressure action, to
The aperture of the fuel outlet of the pressure-difference valve is controlled, and then controls the fuel flow towards the fuel nozzle in downstream.
Preferably, pressure and spring force after compressor are born on the right side of the upper end of the adjusting rod, bellows pressure is born in lower end
Power, acting on the pressure difference of the top and bottom of the adjusting rod can be such that the adjusting rod rotates, and connect to the spool of pressure-difference valve
Bar generates thrust.
Preferably, fuel cut-off valve is set on the pipeline towards fuel nozzle.
Preferably, the fuel cut-off valve is two-way formula fuel cut-off valve, is a normally close valve, when it is powered, valve
It opens, fuel oil is able to flow into the fuel nozzle in downstream, if can lead to gas turbine orderly shutdown to fuel cut-off valve power-off.
Preferably, when the spool is in left side extreme position, the fuel outlet is opened completely, at the spool
When right limit position, the fuel outlet completely closes, and by left side extreme position, extreme position moves the spool to the right
When dynamic, the aperture of the fuel outlet is gradually reduced, conversely, the spool is moved by right limit position extreme position to the left
When, the aperture of the fuel outlet gradually increases.
Preferably, in certain height above sea level, gas turbine starts in accelerator, and compressor delivery pressure gradually rises therewith
Height, the pressure acted on the right side of the adjusting rod upper end can be stepped up, and act on the pressure of the top and bottom of the adjusting rod
Difference is stepped up, this pressure difference being stepped up can make the adjusting rod rotate counterclockwise, and then the adjusting rod is to described
The thrust of the valve core link rod of pressure-difference valve will increase so that spool moves to the left, the fuel outlet of the pressure-difference valve
Aperture increases, and then increases towards the fuel flow of the fuel nozzle in downstream.
Preferably, the top and bottom of the adjusting rod are acted on when gas turbine rotary speed decline in certain height above sea level
Pressure difference gradually declines so that the adjusting rod rotates clockwise, and then the spool of the pressure-difference valve moves to the right, fuel oil
Aperture is exported to reduce.
Preferably, with the increase of height above sea level, the pressure difference for acting on the top and bottom of the adjusting rod declines so that
The adjusting rod rotates clockwise, and then the adjusting rod can reduce the thrust of the valve core link rod of the pressure-difference valve, make
It obtains spool to move to the right, the fuel outlet aperture of the pressure-difference valve reduces, and then leads to the fuel flow of fuel nozzle
Reduce.
Preferably, as height above sea level declines, the top and bottom pressure difference for acting on the adjusting rod increases so that described
Adjusting rod rotates counterclockwise, and then the adjusting rod will increase the thrust of the valve core link rod of the pressure-difference valve so that valve
Core moves to the left, and the fuel outlet aperture of the pressure-difference valve increases, and then increases towards the fuel flow of fuel nozzle.
Compared with the existing technology, the gas turbine self-regulation fueller of the utility model, is mounted in fuel system
It, can be according to combustion of the pressure automatic adjustment fuel system to gas turbine after environment atmospheric pressure and compressor before fuel nozzle
Oil supply, ensures the continual and steady fuel feeding of fuel system and the safe and stable operation of gas turbine, meanwhile, it is capable to ensure combustion gas wheel
Machine starts successfully in different altitude height.
Description of the drawings
Fig. 1 is the structural schematic diagram of the gas turbine self-regulation fueller of the utility model.
Specific implementation mode
To make the purpose of this utility model, technical solution and advantage be more clearly understood, develop simultaneously implementation referring to the drawings
The utility model is further described in example.It should be noted that the realization method for not being painted or describing in attached drawing, for institute
Belong to form known to a person of ordinary skill in the art in technical field.In addition, the direction term mentioned in following embodiment, such as "upper",
"lower", "front", "rear", "left", "right", "top", "bottom" etc. are only the directions of refer to the attached drawing.Therefore, the direction term used is
For illustrating not to be used for limiting the utility model.
The fueller as shown in Figure 1, gas turbine of the utility model is self-regulated, including pressure-difference valve 1, rotating speed and height
Spend compensator 2 and fuel cut-off valve 3.
Pressure-difference valve 1 includes valve body 11 and spool 12, and spool 12 can horizontally slip in the inner cavity of valve body 11, valve body 11
Left end be equipped with the oil-through-hole that is connected to its inner cavity, the oil-through-hole is to introduce hydraulic fluid pressure, on the right end peripheral wall of valve body 11
Equipped with fuel inlet, the middle part of the fuel supply pipeline connection of the fuel inlet and upstream, valve body 11 is equipped with fuel outlet, the combustion
The pipeline connection towards fuel nozzle of oil export and downstream, and should be towards setting fuel cut-off valve 3 on the pipeline of fuel nozzle；
Spring 13 is arranged in the left bottom of spool 12, and valve core link rod 14 is arranged in the right hand top of spool 12, and valve core link rod 14 stretches out valve body
It is connect with the rotating speed and altimetric compensation device 2 being arranged on the right side of 1 outside of pressure-difference valve at the top of 11 right end；It holds in the left side of spool 12
By hydraulic fluid pressure and spring force, fuel pressure and rotating speed and the pushing away to its valve core link rod 14 of altimetric compensation device 2 are born in right side
Power, spool 12 can move left and right under left and right sides differential pressure action, to control pressure-difference valve 1 fuel outlet aperture, into
And the fuel flow towards the fuel nozzle in downstream is controlled, when spool 12 is in left side extreme position, the fuel outlet is complete
Open, when spool 12 is in right limit position, which completely closes, spool 12 by left side extreme position to the right
When extreme position moves, the aperture of the fuel outlet is gradually reduced, conversely, spool 12 is by right limit position limit position to the left
When setting mobile, the aperture of the fuel outlet gradually increases.
Rotating speed and altimetric compensation device 2 include diaphragm 21, resetting spring 22, the waling stripe of shell and setting in the housing
23, adjusting rod 24, bellows 25, the inner cavity of shell includes upper cavity, lower chamber and connection upper cavity to be connected to lower chamber
Cavity, diaphragm 21 are arranged in the upper cavity of shell, and bellows 25 is arranged horizontally in the lower chamber of shell, and adjusting rod 24 is along perpendicular
Histogram is to being hinged in the connection cavity of shell.The upper cavity of shell is divided into left and right two parts by diaphragm 21, in right part upper cavity
Equipped with horizontally disposed resetting spring 22,22 contact of resetting spring is on the right side of diaphragm 21, and right part upper cavity is equipped with and leads to
Stomata, the venthole introduce pressure after compressor；The connection cavity and lower chamber of left part upper cavity and shell are connected to, and left part
At least one of upper cavity, connection cavity, lower chamber are equipped with venthole, which introduces environment atmospheric pressure；Diaphragm
It is connect on the right side of 21 upper end for passing on left the waling stripe 23 and adjusting rod 24 being arranged in left part upper cavity, adjusting rod 24
It connect with the valve core link rod 14 of pressure-difference valve 1 on the left of upper end, is connect with the top of bellows 25 on the right side of the lower end of adjusting rod 24.
Pressure and spring force after compressor are born on the right side of the upper end of adjusting rod 24, ripple pipe pressure (i.e. ambient atmosphere pressure is born in lower end
Power), acting on the pressure difference of diaphragm top and bottom can make adjusting rod 24 rotate, and have one to the valve core link rod of pressure-difference valve 24
A thrust.
In certain height above sea level, environment atmospheric pressure is certain, gas turbine start accelerator in, fuel system need to
Fuel nozzle increases fuel delivery gradually.At this point, environment atmospheric pressure is certain, i.e., bellows 25 acts on the right side of 24 lower end of adjusting rod
Reaction force it is certain, and compressor delivery pressure is stepped up, and the pressure acted on the right side of 24 upper end of adjusting rod can gradually rise
It is high.The top and bottom pressure difference for acting on adjusting rod 24 is stepped up therewith, acts on the top and bottom pressure difference of adjusting rod 24
Pressure-environment atmospheric pressure after=compressor is pretended and is stepped up for the top and bottom pressure difference of adjusting rod 24, this is gradually
Raised pressure difference can make adjusting rod 24 rotate counterclockwise, and then the pushing away to the valve core link rod 14 of pressure-difference valve 1 of adjusting rod 24
Power will increase so that spool 12 moves to the left, and the fuel outlet aperture of pressure-difference valve 1 increases, and then leads to fuel nozzle
Fuel flow increase, achieve the effect that increase fuel delivery.
Similarly, in certain height above sea level, when gas turbine rotary speed declines, the fuel flow that fuel nozzle needs reduces, this
When environment atmospheric pressure it is constant, pressure gradually declines after compressor, under acting on the top and bottom pressure difference of adjusting rod 24 gradually
Drop so that adjusting rod 24 rotates clockwise, and then the spool 12 of pressure-difference valve 1 moves to the right, and fuel outlet aperture reduces,
Achieve the effect that reduce fuel delivery.
When gas turbine is in different altitude height starting operation, with the increase of height above sea level, required fuel oil is started
Amount is reduced, if easily causing gas turbine richextinction to gas turbine fuel feeding according to the fuel supply rate curve under low altitude area environment, surpassing
The problems such as warm.Compressor pressure ratio is constant under the same rotating speed of gas turbine, and (environment is big for pressure before pressure=compressor after compressor
Atmospheric pressure) * pressure ratios, act on pressure-environment atmospheric pressure=(pressure after top and bottom pressure difference=compressor of adjusting rod 24
Than -1) * environment atmospheric pressures, with the increase of height above sea level, environment atmospheric pressure declines, so acting on the upper of adjusting rod 24
End declines with lower end pressure difference so that adjusting rod 24 rotates clockwise, and then adjusting rod 24 is to the valve core link rod 14 of pressure-difference valve 1
Thrust can reduce so that spool moves to the right, and the fuel outlet aperture of pressure-difference valve 1 reduces, and then is sprayed towards fuel oil
The fuel flow of mouth reduces, and achievees the effect that reduce fuel delivery.
Similarly, it when height above sea level decline, to prevent gas turbine fuel-lean blowout, starts required amount of fuel and increases, at this time
Environment atmospheric pressure increases, and the top and bottom pressure difference for acting on adjusting rod 24 increases so that and adjusting rod 24 rotates counterclockwise, into
And adjusting rod 24 will increase the thrust of the valve core link rod of pressure-difference valve 1 so that spool moves to the left, pressure-difference valve 1
Fuel outlet aperture increase, and then towards fuel nozzle fuel flow increase, achieve the effect that increase fuel delivery.
After gas turbine self-regulation fueller provided by the utility model can be according to environment atmospheric pressure and compressor
Pressure change automatically adjusts the fuel delivery to gas turbine, significant to gas turbine fuel system, while improving combustion
Applicability of the fuel supply rate curve in different altitude height in gas-turbine control system.
Fuel oil flows to fuel cut-off valve 3 after pressure-difference valve 1, and fuel oil stop valve 3 is two-way formula fuel cut-off valve, is one
A normally close valve, when it is powered, valve is opened, and fuel oil is able to flow into the fuel nozzle in downstream, if powering off meeting to fuel cut-off valve 3
Lead to gas turbine orderly shutdown.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of parts and components is named
Title etc. can be different.The equivalent or simple change that all structure, feature and principles according to described in the utility model patent concept are done,
It is included in the protection domain of the utility model patent.Those skilled in the art of the present invention can be to being retouched
The specific embodiment stated does various modifications or additions or substitutes by a similar method, without departing from the utility model
Structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (10)
- The fueller 1. a kind of gas turbine is self-regulated, including pressure-difference valve, rotating speed and altimetric compensation device, which is characterized in that-- the pressure-difference valve includes valve body and spool, and the spool can horizontally slip in the inner cavity of valve body, whereinThe left end of the valve body is equipped with the oil-through-hole being connected to its inner cavity, and the oil-through-hole is described to introduce hydraulic fluid pressure The right end peripheral wall of valve body be equipped with fuel inlet, the fuel supply pipeline connection of the fuel inlet and upstream, the valve body Middle part is equipped with fuel outlet, the pipeline connection towards fuel nozzle of the fuel outlet and downstream；Spring is arranged in the left bottom of the spool, and valve core link rod is arranged in right hand top, and the valve core link rod stretches out the valve body Right end at the top of connect with the rotating speed and altimetric compensation device being arranged on the right side of outside the pressure-difference valve；-- the rotating speed and altimetric compensation device include diaphragm, resetting spring, waling stripe, the tune of shell and setting in the housing Pole, bellows, whereinThe rotating speed and the inner cavity of the shell of altimetric compensation device include upper cavity, lower chamber and are connected to upper cavity and lower chamber It is connected to cavity, in the upper cavity, the bellows is arranged horizontally in the lower chamber diaphragm arrangement, the adjusting Bar is vertically hinged in the connection cavity；The upper cavity is divided into left part upper cavity and right part upper cavity by the diaphragm, and the resetting spring is arranged horizontally in institute It states in right part upper cavity, the back-moving spring top is against the right side of the diaphragm, and the right part upper cavity is equipped with venthole, The venthole introduces pressure after compressor；The left part upper cavity is connected to cavity and lower chamber connection with described, and described At least one of left part upper cavity, connection cavity, lower chamber are equipped with venthole, which introduces environment atmospheric pressure；The upper end for passing on left the waling stripe and the adjusting rod that are arranged in the left part upper cavity of the diaphragm Right side connects, and is connect with the valve core link rod of the pressure-difference valve on the left of the upper end of the adjusting rod, the lower end of the adjusting rod Right side is connect with the top of the bellows.
- The fueller 2. gas turbine according to claim 1 is self-regulated, which is characterized in that born on the left of the spool Hydraulic fluid pressure and spring force, fuel pressure and the rotating speed are born in right side and altimetric compensation device pushes away the valve core link rod Power, the spool move left and right under left and right sides differential pressure action, to control the pressure-difference valve fuel outlet aperture, And then control the fuel flow towards the fuel nozzle in downstream.
- The fueller 3. gas turbine according to claim 1 is self-regulated, which is characterized in that the upper end of the adjusting rod is right Pressure and spring force after compressor are born in side, and ripple pipe pressure is born in lower end, acts on the top and bottom of the adjusting rod Pressure difference can be such that the adjusting rod rotates, and thrust is generated to the valve core link rod of pressure-difference valve.
- The fueller 4. gas turbine according to claim 1 is self-regulated, which is characterized in that described towards fuel nozzle Fuel cut-off valve is set on pipeline.
- The fueller 5. gas turbine according to claim 4 is self-regulated, which is characterized in that the fuel cut-off valve is two Road formula fuel cut-off valve is a normally close valve, and when the fuel cut-off valve is powered, valve is opened, and fuel oil is able to flow into downstream Fuel nozzle, if to the fuel cut-off valve power-off can lead to gas turbine orderly shutdown.
- The fueller 6. gas turbine according to claim 1 is self-regulated, which is characterized in that when the spool is in left side When extreme position, the fuel outlet is opened completely, and when the spool is in right limit position, the fuel outlet is complete Close, the spool by left side extreme position to the right extreme position move when, the aperture of the fuel outlet is gradually reduced, instead It, when the spool is moved by right limit position extreme position to the left, the aperture of the fuel outlet gradually increases.
- The fueller 7. gas turbine according to claim 1 is self-regulated, which is characterized in that in certain height above sea level, combustion Gas-turbine starts in accelerator, and compressor delivery pressure is stepped up therewith, acts on the pressure on the right side of the adjusting rod upper end Power can be stepped up, and the pressure difference for acting on the top and bottom of the adjusting rod is stepped up, this pressure difference meeting being stepped up So that the adjusting rod rotates counterclockwise, and then the adjusting rod can increase the thrust of the valve core link rod of the pressure-difference valve Greatly so that spool moves to the left, and the fuel outlet aperture of the pressure-difference valve increases, and then leads to the fuel nozzle in downstream Fuel flow increase.
- The fueller 8. gas turbine according to claim 1 is self-regulated, which is characterized in that in certain height above sea level, when Gas turbine rotary speed declines, and the top and bottom pressure difference for acting on the adjusting rod gradually declines so that the adjusting rod up time Needle rotates, and then the spool of the pressure-difference valve moves to the right, and fuel outlet aperture reduces.
- The fueller 9. gas turbine according to claim 1 is self-regulated, which is characterized in that with the increasing of height above sea level Greatly, the pressure difference for acting on the top and bottom of the adjusting rod declines so that the adjusting rod rotates clockwise, and then the tune Pole can reduce the thrust of the valve core link rod of the pressure-difference valve so that spool moves to the right, the pressure-difference valve Fuel outlet aperture reduce, and then towards fuel nozzle fuel flow reduce.
- The fueller 10. gas turbine according to claim 1 is self-regulated, which is characterized in that as height above sea level declines, The top and bottom pressure difference for acting on the adjusting rod increases so that the adjusting rod rotates counterclockwise, and then the adjusting rod The thrust of the valve core link rod of the pressure-difference valve will increase so that spool moves to the left, the combustion of the pressure-difference valve Oil export aperture increases, and then increases towards the fuel flow of fuel nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721770398.2U CN207740086U (en) | 2017-12-18 | 2017-12-18 | A kind of gas turbine self-regulation fueller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721770398.2U CN207740086U (en) | 2017-12-18 | 2017-12-18 | A kind of gas turbine self-regulation fueller |
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| Publication Number | Publication Date |
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| CN207740086U true CN207740086U (en) | 2018-08-17 |
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ID=63118437
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721770398.2U Active CN207740086U (en) | 2017-12-18 | 2017-12-18 | A kind of gas turbine self-regulation fueller |
Country Status (1)
| Country | Link |
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| CN (1) | CN207740086U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985213A (en) * | 2019-12-11 | 2020-04-10 | 中国航空工业集团公司沈阳飞机设计研究所 | Differential pressure type self-adjusting valve |
| CN114542347A (en) * | 2022-02-27 | 2022-05-27 | 西北工业大学 | Novel fuel nozzle capable of automatically controlling flow |
-
2017
- 2017-12-18 CN CN201721770398.2U patent/CN207740086U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985213A (en) * | 2019-12-11 | 2020-04-10 | 中国航空工业集团公司沈阳飞机设计研究所 | Differential pressure type self-adjusting valve |
| CN110985213B (en) * | 2019-12-11 | 2022-03-29 | 中国航空工业集团公司沈阳飞机设计研究所 | Differential pressure type self-adjusting valve |
| CN114542347A (en) * | 2022-02-27 | 2022-05-27 | 西北工业大学 | Novel fuel nozzle capable of automatically controlling flow |
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