CN106401786A - Sealing device used for micro-miniature rotor engine - Google Patents
Sealing device used for micro-miniature rotor engine Download PDFInfo
- Publication number
- CN106401786A CN106401786A CN201610849387.7A CN201610849387A CN106401786A CN 106401786 A CN106401786 A CN 106401786A CN 201610849387 A CN201610849387 A CN 201610849387A CN 106401786 A CN106401786 A CN 106401786A
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- China
- Prior art keywords
- diaphragm seal
- sealing device
- miniature rotor
- sealing
- seal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 238000011900 installation process Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract 2
- 229920003266 Leaf® Polymers 0.000 description 29
- 239000007789 gas Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 3
- 108091092878 Microsatellite Proteins 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
- F02F11/007—Arrangements of sealings in combustion engines involving rotary applications
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a sealing device used for a micro-miniature rotor engine, relates to a sealing device used for a micro-miniature rotor engine and adopting a combined type of leaf springs and sealing pieces and belongs to the field of micro-miniature rotor engines. The sealing device comprises the sealing pieces and the leaf springs; each leaf spring is in a shape of an arc; and the middle portions of the two ends in the up-down direction are provided with grooves used for being in clearance fit with rib plates. The top end of each sealing piece is in a shape of an arc; the middle portion of each sealing piece is rectangular; the upper end and the lower end of the back portion of each sealing piece are provided with convex tables preventing the leaf springs from moving; and the rib plates reducing the gas leakage area are machined in the middles of the back portions of the sealing pieces. The rib plates are in clearance fit with the grooves formed in the end portions of the leaf springs, and the grooves in the upper sides and the lower sides of the leaf springs can stride cross the two sides of each rib plate. During installation, the back portions of the leaf springs make contact with the portions of the bottoms of rotor sealing grooves, and the tops of the sealing pieces make contact with the inner wall of a cylinder. By means of the sealing device, the abrasion amount of the sealing pieces can be reduced, eccentric abrasion of the sealing pieces in the working process can be improved, the power and the service life of the micro-miniature rotor engine are improved, and installing is convenient.
Description
Technical field
The present invention relates to a kind of be used for miniature rotor electromotor sealing device, more particularly, to one kind is used for miniature rotor
Electromotor, the sealing device in the form of spring leaf and diaphragm seal combine, belong to miniature rotor engine art.
Background technology
With the development of microelectromechanical systems (MEMS), develop small size, lightweight, energy density height, can persistently transport
The micro-energy system of row has become various countries' focus of attention.Compared with conventional power-supply device, micro-satellite cluster adopts hydrocarbon
As fuel, its energy density is higher than battery system, because the diversified development of fuel also has potentiality with low cost.Cause
This micro-satellite cluster will be widely used in the electronic device of all trades and professions such as industry, agricultural, environmental conservation, health care
Prospect.
The research being currently directed to miniature rotor electromotor is concentrated mainly on structure and study mechanism, and ignores to close
The research of seal structure.With the reduction of miniature rotor electromotor, its radial seal has to the performance of miniature rotor electromotor
There is significant impact.Significantly decline because a small amount of gas leakage may result in engine power.Miniature rotor is sent out in addition
Motivation was because the high sliding speed height between its diaphragm seal and cylinder of rotating speed was it is easy to lose efficacy.Therefore, invent one kind and be used for microminiature
Electromotor is not easy to gas leakage and the sealing device of diaphragm seal inefficacy is necessary.
Content of the invention
For rotary engine sealing device structure in prior art complicated, be easy to the problem that lost efficacy, the present invention is open
A kind of miniature rotor electromotor sealing device, technical problem to be solved is that offer one kind is rational in infrastructure, is not easy to lose efficacy
The sealing device for miniature rotor electromotor, reduce diaphragm seal wear extent, improve inclined in diaphragm seal work process
Mill, improves miniature rotor engine power and life-span, and easy for installation.
The purpose of the present invention is achieved through the following technical solutions：
A kind of miniature rotor electromotor sealing device disclosed by the invention, including diaphragm seal and spring leaf.Spring leaf
For arc, in the middle part of the two ends on above-below direction, have the groove for coordinating with floor gap.Diaphragm seal top is arc, pars intermedia
It is divided into rectangle, the upper and lower ends at diaphragm seal back have the boss preventing spring leaf play, be machined with and subtract in the middle of diaphragm seal back
The floor of little gas leakage area.The groove gap cooperation that described floor and spring leaf end are opened, the upper and lower both sides of spring leaf
Groove need to guarantee the both sides across floor.During installation, the back of spring leaf is contacted with the part of rotor groove bottom land, close
The top of mounting and the contact internal walls of cylinder.
Diaphragm seal is pushed to the radial seal groove of rotary engine by the indoor gas of miniature rotor engine high pressure burning
Side, now to form wider gas flowing logical for the opposite side of the radial seal groove on rotary engine rotor and diaphragm seal
Road, gases at high pressure pass through this channel flow to the back of diaphragm seal, by the diaphragm seal passage flow direction narrow with seal groove opposite side
Low-pressure burner.Diaphragm seal back rectangle hollow out in prior art, whole rectangle hollow part is leakage path.The present invention
By being machined with the floor reducing gas leakage area in the middle of diaphragm seal back, reduce the leakage area in leakage path, enter
And reduce the leakage rate to low-pressure burner for the high compression combustion chamber, improve miniature rotor engine power.
Because the flow process by above-mentioned leakage path gas leakage is dynamic non-stable process, gas leakage be by
High compression combustion chamber flows to low-pressure burner, compares the diaphragm seal leakage path in prior art due to the floor that the present invention increases and lets out
Leakage area reduces, and leakage area increased the resistance of dynamically unstable gas flowing, the therefore sealing of the present invention while reduction
The gas pressure at piece back is less than the pressure at conventional seals piece back.Contact force between diaphragm seal and cylinder in such cases
Will be less, and then reduce the wear extent of diaphragm seal.Further, since the pressure oscillation at diaphragm seal back is than close in prior art
The pressure oscillation at mounting back is little, therefore, it is possible to improve the eccentric wear in diaphragm seal work process, increases engine life.
Beneficial effect：
1., compared with traditional miniature rotor electromotor sealing device, a kind of miniature rotor disclosed by the invention starts
Machine sealing device, can effectively reduce miniature rotor electromotor and pass through diaphragm seal bottom to low-pressure combustion from high compression combustion chamber
The air leakage of room.
2., compared with traditional miniature rotor electromotor sealing device, a kind of miniature rotor disclosed by the invention starts
Machine sealing device, can effectively reduce the gas pressure acting on diaphragm seal back in work process, thus reducing sealing
The wear extent of piece improves the life-span of diaphragm seal.
3., compared with traditional miniature rotor electromotor sealing device, a kind of miniature rotor disclosed by the invention starts
Machine sealing device, can effectively reduce the gas at diaphragm seal back and the gas on diaphragm seal top in the course of the work and act on
The pressure differential of power, thus improve the eccentric wear in diaphragm seal work process.
4., compared with traditional miniature rotor electromotor sealing device, a kind of miniature rotor disclosed by the invention starts
Machine sealing device, diaphragm seal disclosed in this invention and spring leaf are easy for installation, reliable operation.
5., compared with traditional miniature rotor electromotor sealing device, a kind of miniature rotor disclosed by the invention starts
Machine sealing device, it is possible to increase miniature rotor engine power and life-span.
Brief description
Fig. 1 is miniature rotor cylinder rotor and diaphragm seal schematic diagram.
Fig. 2 is the front view of spring leaf.
Fig. 3 is the left view of spring leaf.
Fig. 4 is the top view of diaphragm seal.
Fig. 5 is the front view of diaphragm seal.
Fig. 6 is the rearview of diaphragm seal.
Fig. 7 is the installation diagram of diaphragm seal and spring leaf.
Fig. 8 is the sectional arrangement drawing of diaphragm seal and spring leaf.
Fig. 9 is the sectional arrangement drawing of conventional seals piece and spring leaf.
Wherein：1 cylinder, 2 diaphragm seals, 3 rotors, 4 phase place spur gears, 5 spring leafs.
Specific embodiment
Presently in connection with accompanying drawing, the present invention is described in more detail, these accompanying drawings are the schematic diagram of simplification, only
The basic structure of the present invention is described in a schematic way, therefore it only shows the composition relevant with the present invention.
Embodiment 1：
A kind of miniature rotor electromotor sealing device disclosed in the present embodiment, as shown in Figure 1.With generating radius it is
21mm, as a example the 5CC rotary engine that eccentric throw is 3mm and thickness is 14.5mm, diaphragm seal 2 and spring leaf 5 are installed on rotor
On seal groove in, wherein Fig. 2 and Fig. 3 is respectively the front view of spring leaf and left view.Fig. 4, Fig. 5 and Fig. 6 are diaphragm seals 2
Top view, front view and rearview.Diaphragm seal 2 and spring leaf 5 be arranged in the seal groove on rotor, wherein diaphragm seal 2
The circular arc portion at top is contacted with cylinder 1.Spring leaf 5 is installed on the spring leaf at diaphragm seal 2 back, at its arc top and seal groove
Bottom contacts, and two upper and lower behind boss of diaphragm seal 2 can prevent the play of spring leaf 5, has certain pretightning force
In the case of diaphragm seal 2 and spring leaf 5 are installed in seal groove, it ensure that miniature rotor electromotor in the course of the work
Sealing in the course of the work.
The spring leaf 5 of the present embodiment is arc-shaped flaky spring leaf, and its left view is as shown in Figure 3.Its both sides is respectively provided with width
Spending is 1mm and depth is the groove of 5mm, and the width of this groove is slightly larger than the width of the rib up and down at diaphragm seal back, typically takes 0.05mm
?.Diaphragm seal 2 back rib is as shown in Figure 6.Spring leaf 5 and contact form such as Fig. 7 institute of diaphragm seal 2 and rotor 3 and cylinder 1
Show., due to being machined with groove, across the rib of diaphragm seal bottom, the two ends of spring leaf 5 are convex with the two ends of diaphragm seal for its groove for spring leaf 5
Platform contacts, and its back is contacted with rotor 3 part of rotor seal bottom land.In installation process, spring leaf 5 is squeezed can
There is provided pretightning force to the direction of diaphragm seal 2.Because the rib of upper and lower both sides passes through spring leaf, worked in miniature rotor electromotor
Cheng Zhong, the indoor gas of its high-pressure combustion is reduced by the aisle spare that diaphragm seal bottom flows to low-pressure burner, and traditional is close
The gas leakage area of seal apparatus bottom is 29mm2, the sealing device of design is 7.25mm at present2, the minimizing of its air leakage.In addition
The gas pressure fluctuation of its bottom reduces, and can reduce the eccentric wear phenomenon at diaphragm seal 2 top.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, the shape of its parts and components, it is named
Title etc. can be different, and the diameter of diaphragm seal and spring leaf can make corresponding change according to specific requirement.The size of in figure is only
It is only the illustration that present configuration is done, for explaining the present invention, the protection domain that is not intended to limit the present invention, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement done etc., should be included in the guarantor of the present invention
Within the scope of shield.
Claims (7)
1. a kind of miniature rotor electromotor sealing device it is characterised in that：Including diaphragm seal (2) and spring leaf (5)；Spring
Piece (5) is arc, has the groove for coordinating with floor gap in the middle part of the two ends on above-below direction；Diaphragm seal (2) top is arc
Shape, mid portion is rectangle, and the upper and lower ends at diaphragm seal (2) back have the boss preventing spring leaf (5) play, diaphragm seal
(2) it is machined with the floor reducing gas leakage area in the middle of back；The groove gap that described floor and spring leaf (5) end are opened
Cooperation, the groove of the upper and lower both sides of spring leaf (5) need to guarantee the both sides across floor.
2. as claimed in claim 1 a kind of miniature rotor electromotor sealing device it is characterised in that：During installation, spring
The back of piece (5) is contacted with the part of rotor (3) seal groove bottom land, and the top of diaphragm seal (2) is connect with the inwall of cylinder (1)
Touch.
3. as claimed in claim 1 or 2 a kind of miniature rotor electromotor sealing device it is characterised in that：Microminiature turns
Diaphragm seal (2) is pushed to the side of the radial seal groove of rotary engine by the indoor gas of sub- engine high pressure burning, now exists
The opposite side of radial seal groove on rotary engine rotor (3) forms wider gas flow channel, high pressure with diaphragm seal (2)
Gas passes through this channel flow to the back of diaphragm seal (2), is flowed to low by diaphragm seal (2) passage narrow with seal groove opposite side
Pressure combustor；By being machined with the floor reducing gas leakage area in the middle of diaphragm seal (2) back, reduce in leakage path
Leakage area, and then reduce the leakage rate to low-pressure burner for the high compression combustion chamber, improve miniature rotor engine power.
4. as claimed in claim 3 a kind of miniature rotor electromotor sealing device it is characterised in that：Increased floor phase
Reduce than the diaphragm seal leakage path leakage area in prior art, leakage area increased dynamically unstable gas while reduction
The resistance of body flowing, the gas pressure at described diaphragm seal (2) back is less than the pressure at conventional seals piece back, this kind of situation
Contact force between lower sealing piece (2) and cylinder (1) will be less, and then reduces the wear extent of diaphragm seal (2).
5. as claimed in claim 3 a kind of miniature rotor electromotor sealing device it is characterised in that：Described diaphragm seal
(2) pressure oscillation at back is less than the pressure oscillation at the diaphragm seal back in prior art, can improve diaphragm seal work process
In eccentric wear, increase engine life.
6. as claimed in claim 3 a kind of miniature rotor electromotor sealing device it is characterised in that：In installation process
In, spring leaf (5) is squeezed can provide pretightning force to the direction of diaphragm seal (2).
7. as claimed in claim 3 a kind of miniature rotor electromotor sealing device it is characterised in that：For generating radius
For 21mm, eccentric throw is 3mm and thickness is the 5CC rotary engine of 14.5mm, and the width of groove is more than the upper of diaphragm seal (2) back
The 0.05mm of the width of lower rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610849387.7A CN106401786B (en) | 2016-09-23 | 2016-09-23 | A kind of miniature rotor engine sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610849387.7A CN106401786B (en) | 2016-09-23 | 2016-09-23 | A kind of miniature rotor engine sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106401786A true CN106401786A (en) | 2017-02-15 |
| CN106401786B CN106401786B (en) | 2019-05-03 |
Family
ID=57997533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610849387.7A Expired - Fee Related CN106401786B (en) | 2016-09-23 | 2016-09-23 | A kind of miniature rotor engine sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106401786B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687368A (en) * | 2017-10-16 | 2018-02-13 | 北京理工大学 | A kind of miniature rotor engine apex seal friction loss Forecasting Methodology |
| CN110344964A (en) * | 2019-07-04 | 2019-10-18 | 西北工业大学 | Rotary engine apex combustion seal and rotary engine |
| CN110645115A (en) * | 2019-11-13 | 2020-01-03 | 华北水利水电大学 | Sealing sheet of rotor engine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3963389A (en) * | 1975-04-10 | 1976-06-15 | Outboard Marine Corporation | Multi-piece apex seal for a rotary engine |
| US4072449A (en) * | 1976-03-12 | 1978-02-07 | Caterpillar Tractor Co. | Combined seal biasing spring and check valve for rotary mechanisms |
| JPS5720502A (en) * | 1980-07-10 | 1982-02-03 | Mazda Motor Corp | Setting method of apex seal on rotary piston engine |
| JPS603401A (en) * | 1983-06-20 | 1985-01-09 | Mazda Motor Corp | Apex seal for rotary piston engine |
| JPS60104701A (en) * | 1983-11-09 | 1985-06-10 | Mazda Motor Corp | Seal spring of rotary piston engine |
| CN201373423Y (en) * | 2009-03-19 | 2009-12-30 | 杨祥良 | Sealing device for air preheater |
| CN202165610U (en) * | 2011-06-08 | 2012-03-14 | 德尔福（上海）动力推进***有限公司 | Two-sheet type sealing strip |
| CN104265882A (en) * | 2014-09-29 | 2015-01-07 | 江苏大学 | Sealing element at top of novel rotor |
-
2016
- 2016-09-23 CN CN201610849387.7A patent/CN106401786B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3963389A (en) * | 1975-04-10 | 1976-06-15 | Outboard Marine Corporation | Multi-piece apex seal for a rotary engine |
| US4072449A (en) * | 1976-03-12 | 1978-02-07 | Caterpillar Tractor Co. | Combined seal biasing spring and check valve for rotary mechanisms |
| JPS5720502A (en) * | 1980-07-10 | 1982-02-03 | Mazda Motor Corp | Setting method of apex seal on rotary piston engine |
| JPS603401A (en) * | 1983-06-20 | 1985-01-09 | Mazda Motor Corp | Apex seal for rotary piston engine |
| JPS60104701A (en) * | 1983-11-09 | 1985-06-10 | Mazda Motor Corp | Seal spring of rotary piston engine |
| CN201373423Y (en) * | 2009-03-19 | 2009-12-30 | 杨祥良 | Sealing device for air preheater |
| CN202165610U (en) * | 2011-06-08 | 2012-03-14 | 德尔福（上海）动力推进***有限公司 | Two-sheet type sealing strip |
| CN104265882A (en) * | 2014-09-29 | 2015-01-07 | 江苏大学 | Sealing element at top of novel rotor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687368A (en) * | 2017-10-16 | 2018-02-13 | 北京理工大学 | A kind of miniature rotor engine apex seal friction loss Forecasting Methodology |
| CN110344964A (en) * | 2019-07-04 | 2019-10-18 | 西北工业大学 | Rotary engine apex combustion seal and rotary engine |
| CN110645115A (en) * | 2019-11-13 | 2020-01-03 | 华北水利水电大学 | Sealing sheet of rotor engine |
| CN110645115B (en) * | 2019-11-13 | 2021-11-02 | 华北水利水电大学 | Sealing sheet of rotor engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106401786B (en) | 2019-05-03 |
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Granted publication date: 20190503 |