CN204355281U - A kind of fuel tank check valve - Google Patents
A kind of fuel tank check valve Download PDFInfo
- Publication number
- CN204355281U CN204355281U CN201420750801.5U CN201420750801U CN204355281U CN 204355281 U CN204355281 U CN 204355281U CN 201420750801 U CN201420750801 U CN 201420750801U CN 204355281 U CN204355281 U CN 204355281U
- Authority
- CN
- China
- Prior art keywords
- check valve
- expansion
- contraction section
- close segments
- gap
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of fuel tank check valve, it is characterized in that; Described check valve is made up of contraction section (1) and expansion/close segments (2), contraction section (1) has the open type truncated cone-shaped structure of shirt rim for large end band that composite material is made, expansion/close segments (2) is the frustum cone structure be made up of the rubber with gap (3), and the tapering of contraction section (1) and the large end of expansion/close segments (2) are socketed.It is simple that the utility model has structure, easily manufactured, the feature of lighter in weight, adopt technique scheme can reach the effect reducing fuel oil shaking amplitude and impact load, the check valve relying on mechanical movement could realize one-way flow function is converted into the stationary member possessing said function, not only reduce the dependence to product reliability, and avoid the shock of check valve and structure, ensure that the integraty of structure enamelled coating.
Description
Technical field
The utility model belongs to technical field of aerospace, relates to a kind of check valve, specifically relates to a kind of fuel tank check valve.
Background technology
In airplane motion process, in fuel tank, fuel oil can corresponding generation rocking in various degree, when fuel tank oil mass reduces, the fuel level that the rocking of fuel oil can make to pump near pumping hole is lower than pumping hole, cause oil pump pumps fuel instability, aspirate less than fuel oil even instantaneously, cause a part of gas be sucked and be transported to driving engine, make engine operation unstable.
Existing solution arranges check valve at fuel tank internal dividing plate tapping (being usually located at the lower partition), and when fuel oil rocks near oil pumping pumping hole, one-way valve opens, allows fuel oil to pass through; Otherwise when fuel oil is to when rocking away from oil pumping pumping hole, closed check valve, does not allow fuel oil to pass through, thus ensures that oil pumping pumping hole is in below fuel level all the time;
But this method can bring following problem:
(1), there is the phenomenon of clamping stagnation in the kinematic mechanism that is normally made up of spring and blanking cover of check valve;
(2) rock in process at fuel oil, the numerous shock of hole side frequency of check valve and dividing plate oil-through hole, limit, hole enamelled coating is easily come off, pollute fuel oil.
Summary of the invention
For deficiency of the prior art, the purpose of this utility model is to provide a kind of fuel tank check valve.
Technical solution of the present utility model:
A kind of fuel tank check valve, described check valve is made up of contraction section and expansion/close segments, contraction section is the open type truncated cone-shaped structure that large end band that composite material is made has shirt rim, expansion/close segments is the frustum cone structure be made up of the rubber with gap, and the tapering of contraction section and the large end of expansion/close segments are socketed.
Described expansion/close segments is the frustum cone structure with gap bondd by trapezoidal sheet rubber.
Described gap is rectangle.
Described gap is triangle.
It is simple that the utility model has structure, easily manufactured, the feature of lighter in weight, technique scheme is adopted to replace traditional check valve in fuel tank can reach the effect reducing fuel oil shaking amplitude and impact load, the check valve relying on mechanical movement could realize one-way flow function is converted into the stationary member possessing said function, not only reduce the dependence to product reliability, and avoid the shock of check valve and structure, ensure that the integraty of structure enamelled coating.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model contraction section structural representation
Fig. 3 is the structural representation expanding close segments in the utility model embodiment 2
Fig. 4 is the structural representation expanding close segments in the utility model embodiment 3
Structural representation when Fig. 5 is the utility model cooperation fuel tank use
In figure: contraction section 1, expansion/close segments 2, gap 3, oil tank body 4, dividing plate 5, fuel oil 6, oil well pump 7, oil-through hole 8 and check valve 9.
Detailed description of the invention
The utility model specifically can be implemented by disclosed technology, can be conducted further description by the following examples to the utility model, but scope of the present utility model is not limited to following embodiment.
Embodiment 1: as Fig. 1--shown in 2.
A kind of fuel tank check valve, described check valve is made up of contraction section 1 and expansion/close segments 2, contraction section 1 has the open type truncated cone-shaped structure of shirt rim for large end band that composite material is made, consider the material that aircraft weight factor composite material preferred mass is light, expansion/close segments 2 is the frustum cone structures be made up of the rubber with gap 3, and the tapering of contraction section 1 and the large end of expansion/close segments 2 are socketed.
Embodiment 2: described expansion/close segments 2 is the frustum cone structures with gap 3 bondd by trapezoidal sheet rubber.
Embodiment 3: described gap 3 is rectangle or triangle.
During use as shown in Figure 5, fuel tank comprises oil tank body 4, dividing plate 5 and oil-through hole 8, oil tank body 4 inside is separated by dividing plate 5, dividing plate 5 is provided with oil-through hole 8, the contraction section 1 of check valve 9 passes through adhesive agent or rivet interlacement by the shirt rim of its large end with dividing plate 5, when fuel oil rocks to oil well pump 7 pumping hole place, oilhole 8, contraction section 1, expansion/close segments 2 can be flowed through successively, when flowing to expansion/closed 2 sections, (from circular cone geometrical property, fuel oil 6 impact load can be decomposed into the vertical load with being parallel to circular conical surface; The load being wherein parallel to circular conical surface can be subject to the friction force between fuel oil 6 and check valve and weaken, and the circumferential load of check valve is converted into perpendicular to the load of circular conical surface, born by check valve body, therefore the effect reducing fuel oil shaking amplitude and impact load can be reached) gap 3 place can be subject to the impact load of fuel oil 6 and be rushed to open, and fuel oil passes through; Otherwise when fuel oil is to when rocking away from oil well pump 7 pumping hole, can impact expansion/close segments 2, gap 3 place can close because being subject to fuel oil impact load, makes only have fuel oil to pass through on a small quantity.
Claims (4)
1. a fuel tank check valve, is characterized in that; Described check valve is made up of contraction section (1) and expansion/close segments (2), contraction section (1) has the open type truncated cone-shaped structure of shirt rim for large end band that composite material is made, expansion/close segments (2) is the frustum cone structure be made up of the rubber with gap (3), and the tapering of contraction section (1) and the large end of expansion/close segments (2) are socketed.
2. check valve according to claim 1, is characterized in that: described expansion/close segments (2) is the frustum cone structure with gap (3) bondd by trapezoidal sheet rubber.
3. check valve according to claim 1 and 2, is characterized in that: described gap (3) is rectangle.
4. check valve according to claim 1 and 2, is characterized in that: described gap (3) is triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420750801.5U CN204355281U (en) | 2014-12-04 | 2014-12-04 | A kind of fuel tank check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420750801.5U CN204355281U (en) | 2014-12-04 | 2014-12-04 | A kind of fuel tank check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204355281U true CN204355281U (en) | 2015-05-27 |
Family
ID=53256765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420750801.5U Expired - Fee Related CN204355281U (en) | 2014-12-04 | 2014-12-04 | A kind of fuel tank check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204355281U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989649A (en) * | 2015-07-02 | 2015-10-21 | 于浩 | Inner blocking screw head for pressure release valve of screw compressor |
| CN107061802A (en) * | 2015-12-14 | 2017-08-18 | 哈米尔顿森德斯特兰德公司 | Check-valves |
| CN108681624A (en) * | 2018-04-19 | 2018-10-19 | 同济大学 | A kind of new construction fuel tank shaking emulation mode based on fluent softwares |
-
2014
- 2014-12-04 CN CN201420750801.5U patent/CN204355281U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989649A (en) * | 2015-07-02 | 2015-10-21 | 于浩 | Inner blocking screw head for pressure release valve of screw compressor |
| CN107061802A (en) * | 2015-12-14 | 2017-08-18 | 哈米尔顿森德斯特兰德公司 | Check-valves |
| CN108681624A (en) * | 2018-04-19 | 2018-10-19 | 同济大学 | A kind of new construction fuel tank shaking emulation mode based on fluent softwares |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20191204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |