CN105604711B - A kind of delivery clack of lever-type flow-displacement conversion function - Google Patents
A kind of delivery clack of lever-type flow-displacement conversion function Download PDFInfo
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- CN105604711B CN105604711B CN201410649411.3A CN201410649411A CN105604711B CN 105604711 B CN105604711 B CN 105604711B CN 201410649411 A CN201410649411 A CN 201410649411A CN 105604711 B CN105604711 B CN 105604711B
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- delivery clack
- delivery
- oil
- hole
- valve pocket
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Abstract
The invention belongs to aero-engine fuel control systems.It is proposed a kind of delivery clack of lever-type flow-displacement conversion function, comprising: delivery clack spool (1) and delivery clack valve pocket (2), the two mating plate each other；The delivery clack valve pocket (2) is hollow cylinder, its center is annular through-hole, delivery clack valve pocket (2) right end is limit boss face, is followed successively by metrology window (3), oil-through hole (4) along limit convex table top end side surface of turning left；It is along the circumferential direction uniformly distributed there are two the metrology window (3) is total；The oil-through hole (4) is circular through hole, shares 8, along the circumferential direction uniformly distributed, the sum of the area of more than two metrology windows (3) of the sum of 8 oil-through hole (4) areas；The delivery clack spool (1) is divided into three parts, and right end part is the piston section of cylindrical body, and the right end of piston section is annular stop boss；Middle section is oil closed cavity section；Left end is annular groove (5).
Description
Technical field
The invention belongs to aero-engine fuel control systems.
Background technique
The third generation full authority digital electronic control system (FADEC) used in aero-engine be a synthesis, it is reliable,
Grow up under faults-tolerant control plan, control parameter up to 12-13, system has double-double redundancy and fault-tolerant ability, can
To carry out Restructuring Module.Since reliability improves, back-up hydro-mechanical is not set, and system can carry out engine and vector spray
Fault diagnosis and dealing, and the optimum working parameter of engine can be determined according to aircraft propelling system integration.
And the fuel control system as FADEC system important component, from the purely mechanic control increasingly mistake of early stage
Cross to pure electrical control, this means that the fuel control system in future will be smaller and smaller to mechanical part dependence, to electrically at
Attachment dependence is increasing, therefore should also be as considering to simplify mechanical part in the design of fuel control system.
Summary of the invention
The purpose of the present invention: proposing a kind of delivery clack of lever-type flow-displacement conversion function, and compact design subtracts
Light weight.
A kind of technical solution of the present invention: delivery clack of lever-type flow-displacement conversion function, comprising:
Delivery clack spool 1 and delivery clack valve pocket 2, the two mating plate each other；The delivery clack valve pocket 2 is open circles
Cylinder, center is circular through hole, and wall thickness is in 2mm or more；2 right end of delivery clack valve pocket is limit boss face, edge
Limit convex table top end side surface of turning left be followed successively by metrology window 3, oil-through hole 4；The metrology window 3 is the square that length-width ratio is more than 10
Shape slit, altogether there are two, it is along the circumferential direction uniformly distributed；The oil-through hole 4 is circular through hole, shares 8, along the circumferential direction uniformly distributed, 8
Area the sum of of the sum of a 4 area of oil-through hole more than two metrology windows 3；The delivery clack spool 1 divides for three parts, most right
End is divided into the piston section of cylindrical body, and the right end of piston section is annular stop boss；Middle section is oil closed cavity section；It is most left
End is annular groove 5；The 1 oil closed cavity Duan Weiyi slender cylinder of delivery clack spool combined with one big cylindrical body and
At slender cylinder diameter is the 1/3 of big cylinder diameter, and elongate cylinder body length is 10 times of big cylindrical body, and big cylindrical body is straight
Diameter is equal to the 1 piston section diameter of delivery clack spool；When being in original state, the piston section of the delivery clack spool 1
Positive stop lug boss lower surface is bonded with the 2 positive stop lug boss upper surface of delivery clack valve pocket；And the big cylindrical body left side of oil closed cavity section
End face is concordant with 2 left side of delivery clack valve pocket, and piston section rest part and oil closed cavity section are in the delivery clack
In 2 annular through-hole of valve pocket, the completely obscured metrology window 3 of piston section energy, and oil closed cavity section and the delivery clack valve pocket 2 formation
One annular space, annular space are connected to by oil-through hole 4 with outside；The annular groove 5 by slender cylinder with
The 1 big cylindrical body of oil closed cavity section of delivery clack spool is connected.
Advantages of the present invention: the delivery clack being mentioned herein can in the case where working together with torque-motor/electrohydraulic servo valve
To achieve the purpose that cancel metering valve, mitigate weight.
Detailed description of the invention:
Fig. 1 is delivery clack structure chart of the present invention.
Specific embodiment:
The invention will be described in further detail with reference to the accompanying drawing.
In traditional design scheme, delivery clack is served only for fuel pump start of run " suppressing " and gets up pressure difference before and after differential pressure valve,
Or under control oil control, confession oil is opened or cuts, this programme is made by relevant design through delivery clack valve pocket meter
The fuel flow for measuring window is the monotropic function of delivery clack spool displacement amount, then by measuring displacement, reaches complete meter
Measure the purpose of fuel flow.
In Fig. 1,1 represents delivery clack spool；2 represent delivery clack valve pocket；3 represent the metering window on delivery clack valve pocket
Mouthful；4 represent delivery clack valve pocket oil-through hole；5 represent delivery clack spool annular groove.
A kind of delivery clack of lever-type flow-displacement conversion function, the delivery clack are divided into delivery clack spool 1
With delivery clack valve pocket 2, the two mating plate each other.The delivery clack valve pocket 2 is hollow cylinder, and center is that annular is logical
Hole, and wall thickness must assure that 2mm or more；2 right end of delivery clack valve pocket is limit boss face, past along limit convex table top
Left end side is followed successively by metrology window 3, oil-through hole 4；The metrology window 3 is the rectangular slot that length-width ratio is more than 10, shares two
It is a, it is along the circumferential direction uniformly distributed；The oil-through hole 4 is circular through hole, shares 8, along the circumferential direction uniformly distributed (to pay attention to 8 oil-through holes 4
The sum of area must be exceeded the sum of the area of two metrology windows 3).The delivery clack spool 1 divides for three parts, right end
Part is piston section, and the right end of piston section is annular stop boss；Middle section is oil closed cavity section；Left end is annular
Groove 5.The 1 piston section of delivery clack spool is cylindrical body, and right end is annular stop boss；The delivery clack spool
1 oil closed cavity Duan Weiyi slender cylinder is composed with one big cylindrical body, and slender cylinder diameter is only that big cylindrical body is straight
The 1/3 of diameter, but length is its 10 times, and big cylinder diameter is equal to the 1 piston section diameter of delivery clack spool；When in initial
When state, table on the piston section positive stop lug boss lower surface of the delivery clack spool 1 and 2 positive stop lug boss of delivery clack valve pocket
Face fits closely；And oil closed cavity section big cylindrical body left side end face is just concordant with 2 left side of delivery clack valve pocket, piston
Section rest part and oil closed cavity section are in 2 annular through-hole of delivery clack valve pocket, and piston section completely obscured can just be counted
Measure window 3, and oil closed cavity section and the delivery clack valve pocket 2 form an annular space, annular space by oil-through hole 4 with
Outside connection.The annular groove 5 passes through a slender cylinder and the 1 big cylindrical body of oil closed cavity section of delivery clack spool
It is connected, the slender cylinder diameter of connection is slightly larger than the diameter of the 1 oil closed cavity section slender cylinder of delivery clack spool,
And 5 diameter of annular groove is slightly less than the 1 piston section diameter of delivery clack spool.
When in running order, fuel oil enters oil closed cavity section by oil-through hole 4, pushes and increases under the action of hydraulic coupling
It presses valve spool 1 mobile, once delivery clack spool 1 is mobile, will lose to the metrology window 3 of 2 side of delivery clack valve pocket
Completely obscured, fuel oil will be leaked by metrology window 3.It is assumed that the displacement of the movement of delivery clack spool 1 is x, due to metrology window 3
For rectangle, then the leakage area S (x) of available metrology window 3；According further to Hooke's law, delivery clack spool 1 is acted on
Spring force it is available, be set as F (x), and spring-force driven dual area is 1 piston section sectional area of delivery clack spool, it is above-mentioned
Area is it is known that be set as A, then pressure difference is Δ P=F (x)/A before and after metrology window 3 leaks fuel oil；It can be obtained according to flow formula (1)
To by the flow Q of metrology window 3,
Q=μ × S (x) × (2 × Δ P/ ρ)1/2……………………(1)
μ is discharge coefficient in formula, and ρ is fuel density, is that can look into constant.
Displacement x is measured for convenience, so it is provided with delivery clack spool annular groove 5, it, will by lever principle
One of lever is fixed in delivery clack spool annular groove 5, and the other end link position sensor of lever can be measured
Displacement x.Entire conversion process such as flow signal --- > displacement signal --- > electric signal, is solved by electronic controller (ECU)
It calculates, fuel flow can be measured.
Claims (1)
1. a kind of delivery clack of lever-type flow-displacement conversion function characterized by comprising
Delivery clack spool (1) and delivery clack valve pocket (2), the two mating plate each other；The delivery clack valve pocket (2) is hollow
Cylindrical body, center is circular through hole, and wall thickness is in 2mm or more；Delivery clack valve pocket (2) right end is positive stop lug boss
Face is followed successively by metrology window (3), oil-through hole (4) along limit convex table top end side surface of turning left；The metrology window (3) is length and width
Than the rectangular slot for being more than 10, altogether there are two, it is along the circumferential direction uniformly distributed；The oil-through hole (4) is circular through hole, shares 8, edge
Circumferencial direction is uniformly distributed, the sum of the area of more than two metrology windows (3) of the sum of 8 oil-through hole (4) areas；The delivery clack valve
Core (1) is divided into three parts, and right end part is the piston section of cylindrical body, and the right end of piston section is annular stop boss；It is intermediate
Part is oil closed cavity section；Left end is annular groove (5)；The elongated circle of delivery clack spool (1) the oil closed cavity Duan Weiyi
Cylinder is composed with one big cylindrical body, and slender cylinder diameter is the 1/3 of big cylinder diameter, and elongate cylinder body length is
Big 10 times of cylindrical body, big cylinder diameter are equal to delivery clack spool (1) the piston section diameter；When being in original state,
The piston section positive stop lug boss lower surface of the delivery clack spool (1) and delivery clack valve pocket (2) the positive stop lug boss upper surface
Fitting；And oil closed cavity section big cylindrical body left side end face is concordant with delivery clack valve pocket (2) left side, its remaining part of piston section
Divide and is in delivery clack valve pocket (2) annular through-hole with oil closed cavity section, the completely obscured metrology window (3) of piston section energy,
And oil closed cavity section and the delivery clack valve pocket (2) form an annular space, annular space passes through oil-through hole (4) and external
Connection；The annular groove (5) passes through a slender cylinder and the big cylindrical body of delivery clack spool (1) the oil closed cavity section
It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649411.3A CN105604711B (en) | 2014-11-14 | 2014-11-14 | A kind of delivery clack of lever-type flow-displacement conversion function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649411.3A CN105604711B (en) | 2014-11-14 | 2014-11-14 | A kind of delivery clack of lever-type flow-displacement conversion function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105604711A CN105604711A (en) | 2016-05-25 |
| CN105604711B true CN105604711B (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410649411.3A Expired - Fee Related CN105604711B (en) | 2014-11-14 | 2014-11-14 | A kind of delivery clack of lever-type flow-displacement conversion function |
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| CN (1) | CN105604711B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523168A (en) * | 2016-11-24 | 2017-03-22 | 新乡航空工业(集团)有限公司 | Intelligent fuel control system |
| CN106762160A (en) * | 2016-11-24 | 2017-05-31 | 北京航科发动机控制系统科技有限公司 | A kind of novel fuel temperature compensation |
| CN110219998A (en) * | 2018-11-21 | 2019-09-10 | 中国航发西安动力控制科技有限公司 | A kind of gear pump safety valve structure |
| CN114109612B (en) * | 2021-11-30 | 2023-03-21 | 四川航天烽火伺服控制技术有限公司 | Metering valve assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201025328Y (en) * | 2006-08-30 | 2008-02-20 | 中国航空工业第一集团公司沈阳发动机设计研究所 | A leakage prevention active door |
| JP2008509365A (en) * | 2004-08-13 | 2008-03-27 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Check valve |
| CN202228768U (en) * | 2011-09-08 | 2012-05-23 | 中国航空工业第六一八研究所 | Device for rapidly controlling valve displacement through electric signals |
| CN102536463A (en) * | 2010-12-22 | 2012-07-04 | 中国航空工业集团公司沈阳发动机设计研究所 | Cutoff valve |
-
2014
- 2014-11-14 CN CN201410649411.3A patent/CN105604711B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008509365A (en) * | 2004-08-13 | 2008-03-27 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Check valve |
| CN201025328Y (en) * | 2006-08-30 | 2008-02-20 | 中国航空工业第一集团公司沈阳发动机设计研究所 | A leakage prevention active door |
| CN102536463A (en) * | 2010-12-22 | 2012-07-04 | 中国航空工业集团公司沈阳发动机设计研究所 | Cutoff valve |
| CN202228768U (en) * | 2011-09-08 | 2012-05-23 | 中国航空工业第六一八研究所 | Device for rapidly controlling valve displacement through electric signals |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105604711A (en) | 2016-05-25 |
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Address after: 102200 No. 1 Li Xiang Road, Changping District science and Technology Park, Beijing Patentee after: CHINA AEROSPACE BEIJING HANGKE ENGINE CONTROL SYSTEM TECHNOLOGY Co.,Ltd. Address before: 102200 No. 1 Li Xiang Road, Changping District science and Technology Park, Beijing Patentee before: BEIJING HANGKE ENGINE CONTROL SYSTEM SCIENCE & TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20190122 Termination date: 20201114 |
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