CN205226503U - Unmanned aerial vehicle oil tank advances exhaust system two -way valve and negative pressure check valve subassembly thereof - Google Patents
Unmanned aerial vehicle oil tank advances exhaust system two -way valve and negative pressure check valve subassembly thereof Download PDFInfo
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- CN205226503U CN205226503U CN201521014948.9U CN201521014948U CN205226503U CN 205226503 U CN205226503 U CN 205226503U CN 201521014948 U CN201521014948 U CN 201521014948U CN 205226503 U CN205226503 U CN 205226503U
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- valve body
- elastic component
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- 238000007789 sealing Methods 0.000 claims description 42
- 239000002828 fuel tank Substances 0.000 claims description 24
- 239000000446 fuel Substances 0.000 abstract description 8
- 230000008020 evaporation Effects 0.000 abstract description 3
- 238000001704 evaporation Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 abstract 6
- 239000000295 fuel oil Substances 0.000 abstract 1
- 238000005336 cracking Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002153 concerted effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Abstract
The utility model discloses an unmanned aerial vehicle oil tank advances exhaust system two -way valve and negative pressure check valve subassembly thereof belongs to oil tank valve technical field, negative pressure check valve subassembly includes valve body, valve gap and adjusting spindle, and the inside of valve body is equipped with the negative pressure seal, be connected with first elastic component between negative pressure seal and the valve gap, be connected with the second elastic component between negative pressure seal and the adjusting spindle, be equipped with on the valve gap the external and inside gas passage that is linked together of valve body, be equipped with the air vent on the lateral wall of valve body, the negative pressure seal removes along the axis direction of valve body to realize the opening and closing of negative pressure gas circuit of gas passage and air vent constitution. The two -way valve includes the negative pressure check valve subassembly and the positive seal body. The utility model discloses safe control the oil -fired evaporation of oil tank, guarantee again that the oil tank does not form the negative pressure and has guaranteed that the oil tank is in time incessant to the fuel oil system fuel feeding.
Description
Technical field
The utility model relates to fuel tank valve technology field, specifically a kind of unmanned plane fuel tank air inlet system and exhaust system two-way valve and negative one-way valve assembly thereof.
Background technique
The fuel tank of unmanned plane is all provided with air inlet and exhaust valve, when fuel tank internal air pressure rises, get rid of gas and prevent fuel tank risk of rupture, and when fuel tank internal air pressure reduces, extraneous gas is flowed into, thus ensure that fuel tank does not form negative pressure, ensure that the fuel tank continual fuel feeding to oil-fired system in time.
At present, the air inlet and exhaust valve that UAV Fuel case is installed mainly adopts the two-way valve spool as shown in Fig. 1 of Figure of description, its structure comprises malleation spool, positive pressing spring 2, negative pressure spool 3 and negative pressure spring 4, and positive pressing spring 2 and negative pressure spring 4 are non-coaxial layout.This non-coaxial arranges that the sealing of negative pressure and positive valve will take larger space, and generally when negative pressure, when in fuel tank, pressure reaches-1kPa pressure, negative pressure spool will open slip.But the less spring pressure of general accurate adjustment is very difficult, if the pressing force of negative pressure spool and valve seat reduces, abundant sealing can not be obtained, if negative pressure spool can not overcome spring force and slides when spring force is excessive, just cannot ensure oil-fired system fuel feeding.
Model utility content
For the problems referred to above, the purpose of this utility model is to provide a kind of unmanned plane fuel tank air inlet system and exhaust system two-way valve and negative one-way valve assembly thereof, the evaporation controlling oil tank fuel of this two-way valve safety, ensure that again fuel tank does not form negative pressure, ensure that the fuel tank continual fuel feeding to oil-fired system in time; The power that the negative-pressure sealing body of this negative one-way valve assembly bears is making a concerted effort of two elastic components, solves cracking pressure and sealability under current minute-pressure condition and does not reach the problem of requirement.
The technical scheme in the invention for solving the technical problem comprises: a kind of negative one-way valve assembly, comprises the valve body of tubulose, and one end of valve body is provided with valve gap, and the other end of valve body is provided with adjustment axle, and the inside of valve body is provided with negative-pressure sealing body; Be connected with the first elastic component between negative-pressure sealing body and valve gap, between negative-pressure sealing body and adjustment axle, be connected with the second elastic component; Valve gap is provided with the gas channel be connected with valve inner in the external world, and the sidewall of valve body is provided with vent; Negative-pressure sealing body moves along the axial direction of valve body, to realize the opening and closing of the negative pressure gas circuit that gas channel and vent are formed.
Further technological scheme is: the dead in line of described valve body, valve gap, adjustment axle, negative-pressure sealing body, the first elastic component and the second elastic component.Above-mentioned element coaxial is arranged, negative-pressure sealing body can be made to be subject to accurate and stable pressure, and it is little to take up room.
Further technological scheme is: the wall outer surface of described valve gap is formed with the side wall inner surfaces of valve body and is threaded, and valve gap moves along the axial direction of valve body the elastic force adjusting the first elastic component.
Further technological scheme is: the wall outer surface of described adjustment axle is formed with the side wall inner surfaces of valve body and is threaded, and adjustment axle moves along the axial direction of valve body the elastic force adjusting the second elastic component.
The technical scheme in the invention for solving the technical problem also comprises: a kind of unmanned plane fuel tank air inlet system and exhaust system two-way valve, comprises above-mentioned negative one-way valve assembly, also comprise positive seal body; Positive seal body is positioned between negative-pressure sealing body and the first elastic component, and positive seal body is connected on the first elastic component, and the fitting surface of negative-pressure sealing body and positive seal body is provided with through hole; Positive seal body moves along the axial direction of valve body, to realize the opening and closing of the malleation gas circuit that vent, through hole and gas channel are formed.
Further technological scheme is: the dead in line of described valve body, valve gap, adjustment axle, positive seal body, negative-pressure sealing body, the first elastic component and the second elastic component.Above-mentioned element coaxial is arranged, negative-pressure sealing body and positive seal body can be made to be subject to accurate and stable pressure, and it is little to take up room.
For ease of the processing of gas channel, ensure the mechanical property of valve gap and the unobstructed of air inlet, further technological scheme is: described gas channel is distributed on the axial direction of valve gap, the axis of gas channel and the dead in line of valve gap.
In order to improve the efficiency of intake and exhaust, further technological scheme is: described vent on the sidewall of valve body circumferentially shape be evenly distributed with multiple, the height of multiple vent on valve axis direction is consistent.
Further technological scheme is: the wall outer surface of described valve gap is formed with the side wall inner surfaces of valve body and is threaded, and valve gap moves along the axial direction of valve body the elastic force adjusting the first elastic component.
Further technological scheme is: the wall outer surface of described adjustment axle is formed with the side wall inner surfaces of valve body and is threaded, and adjustment axle moves along the axial direction of valve body the elastic force adjusting the second elastic component.
The elastic force of the first elastic component and the elastic force of the second elastic component all can adjust, and are convenient to choose suitable elastic force and meet the requirements of numerical value to make cracking pressure and sealability.
First elastic component and the second elastic component all can select spring.
The beneficial effects of the utility model are:
1, negative one-way valve assembly of the present utility model, first elastic component and the second elastic component lay respectively at the both sides of negative-pressure dense sealing, the power that during negative pressure, negative-pressure sealing body bears is making a concerted effort of the first elastic component and the second elastic component, solves cracking pressure and sealability under minute-pressure condition and does not reach the problem of requirement.
2, two-way valve of the present utility model, solves the problem of two way sealed during fuel tank intake and exhaust, the evaporation controlling oil tank fuel of safety, ensures that again fuel tank does not form negative pressure, ensure that the fuel tank continual fuel feeding to oil-fired system in time.
3, two-way valve of the present utility model and negative one-way valve assembly thereof, first elastic component and the second elastic component coaxially arranged, take up room little, by choosing suitable elastic component parameter, negative-pressure sealing body can be made to be subject to accurate and stable pressure, to ensure that cracking pressure and sealability meet the requirements of numerical value.
Accompanying drawing explanation
Fig. 1 is the structural representation of the two-way valve spool adopted at present in the utility model background technique;
Fig. 2 is the structural representation of the utility model embodiment two-way valve;
Fig. 3 is the structural representation of two-way valve when negative pressure state of the utility model embodiment;
Fig. 4 is the structural representation of two-way valve when barotropic state of the utility model embodiment;
Fig. 5 is the structural representation of the utility model embodiment negative one-way valve assembly;
Fig. 6 is the structural representation of negative one-way valve assembly when negative pressure state of the utility model embodiment.
In figure: 1 malleation spool, 2 positive pressing springs, 3 negative pressure spools, 4 negative pressure springs, 5 valve bodies, 6 valve gaps, 7 adjustment axles, 8 positive seal bodies, 9 negative-pressure sealing bodies, 10 gas channels, 11 vents, 12 through holes.
Embodiment
Below in conjunction with Figure of description and specific embodiment, the utility model will be further described:
As shown in Figure 5, a kind of negative one-way valve assembly, comprises the valve body 5 of tubulose, and one end of valve body 5 is provided with valve gap 6, and the other end of valve body 5 is provided with adjustment axle 7, and the inside of valve body 5 is provided with negative-pressure sealing body 9; Be connected with the first elastic component between negative-pressure sealing body 9 and valve gap 6, between negative-pressure sealing body 9 and adjustment axle 7, be connected with the second elastic component; Valve gap 6 is provided with the gas channel 10 be connected with valve body 5 inside in the external world, and the sidewall of valve body 5 is provided with vent 11; Negative-pressure sealing body 9 moves along the axial direction of valve body 5, to realize the opening and closing of the negative pressure gas circuit that gas channel 10 and vent 11 are formed.
First elastic component and the second elastic component all can select spring, and the first elastic component is positive pressing spring 2, second elastic component is negative pressure spring 4.
The dead in line of valve body 5, valve gap 6, adjustment axle 7, negative-pressure sealing body 9, just pressing spring 2 and negative pressure spring 4; The wall outer surface of described valve gap 6 is formed with the side wall inner surfaces of valve body 5 and is threaded, and valve gap 6 moves along the axial direction of valve body 5 elastic force adjusting positive pressing spring 2; The wall outer surface of described adjustment axle 7 is formed with the side wall inner surfaces of valve body 5 and is threaded, and adjustment axle 7 moves along the axial direction of valve body 5 elastic force adjusting negative pressure spring 4.
Described gas channel 10 is distributed on the axial direction of valve gap 6, the axis of gas channel 10 and the dead in line of valve gap 6.Described vent 11 on the sidewall of valve body 5 circumferentially shape be evenly distributed with multiple, the height of multiple vent 11 on valve body 5 axial direction is consistent.
As shown in Figure 6, when the negative one-way valve assembly of the present embodiment is in negative pressure state (namely the air pressure of valve body 5 outside is greater than the air pressure of valve body 5 inside), negative-pressure sealing body 9 is stressed to be moved down, at this moment air is inner by valve body 5 by the direction of arrow shown in Fig. 6 under pressure, when reaching pressure balance, under the effect of positive pressing spring 2 and negative pressure spring 4, negative-pressure sealing body 9 retracts original position automatically, closes negative pressure gas circuit.
As shown in Figure 2, a kind of unmanned plane fuel tank air inlet system and exhaust system two-way valve, comprises the negative one-way valve assembly shown in Fig. 5, also comprises positive seal body 8; Positive seal body 8 is between negative-pressure sealing body 9 and positive pressing spring 2, and positive seal body 8 is connected on positive pressing spring 2, and negative-pressure sealing body 9 is provided with through hole 12 with the fitting surface of positive seal body 8; Positive seal body 8 moves along the axial direction of valve body 5, to realize the opening and closing of the malleation gas circuit that vent 11, through hole 12 and gas path 10 are formed.
The dead in line of described valve body 5, valve gap 6, adjustment axle 7, positive seal body 8, negative-pressure sealing body 9, just pressing spring 2 and negative pressure spring 4.
In the present embodiment, the cross section of negative-pressure sealing body 9 is in " H " shape, and positive seal body 8 and positive pressing spring 2 are positioned at the sunk area above negative-pressure sealing body 9, and negative pressure spring 4 is positioned at the sunk area below negative-pressure sealing body 9.For ease of coordinating with negative pressure spring 4, the upper surface of adjustment axle 7 is provided with cylindrical bump, and negative pressure spring 4 bottom is nested with on the cylindrical bump of adjustment axle 7.For ease of installing positive pressing spring 2, the upper surface of positive seal body 8 is provided with cylindrical bump, the lower end surface of valve gap 6 is provided with sunk area, and positive pressing spring 2 bottom is nested with on the cylindrical bump of positive seal body 8, and positive pressing spring 2 top is positioned at the sunk area of valve gap 6.
As shown in Figure 3, when the two-way valve spool of the present embodiment is in negative pressure state, negative-pressure sealing body 9 is stressed to be moved down, at this moment air is inner by valve body 5 by the direction of arrow shown in Fig. 3 under pressure, when reaching pressure balance, under the effect of positive pressing spring 2 and negative pressure spring 4, negative-pressure sealing body 9 retracts original position automatically, closes negative pressure gas circuit.
As shown in Figure 4, when the two-way valve spool of the present embodiment is in barotropic state (namely the air pressure of valve body 5 outside is less than the air pressure of valve body 5 inside), positive seal body 8 is stressed to move up, at this moment air is inner by valve body 5 by the direction of arrow shown in Fig. 4 under pressure, when reaching pressure balance, under the effect of positive pressing spring 2 and negative pressure spring 4, positive seal body 8 retracts original position automatically, closes negative pressure gas circuit.
In the utility model, the sectional shape of valve gap 6, adjustment axle 7, positive seal body 8 and negative-pressure sealing body 9 is not limited to the shape described in embodiment, valve gap 6 for sealed valve body 5 end and positive pressing spring 2 is installed, adjust axle 7 for the end of sealed valve body 5 and installation negative pressure spring 4, positive seal body 8 and negative-pressure sealing body 9 are for opening and closing gas circuit.
The foregoing is only preferred embodiment of the present utility model; be not whole embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Except technical characteristics described in specification, all the other technical characteristicss are those skilled in the art's known technology, and be outstanding innovative characteristics of the present utility model, above-mentioned technical characteristics does not repeat them here.
Claims (10)
1. a negative one-way valve assembly, is characterized in that, comprises the valve body of tubulose, and one end of valve body is provided with valve gap, and the other end of valve body is provided with adjustment axle, and the inside of valve body is provided with negative-pressure sealing body; Be connected with the first elastic component between negative-pressure sealing body and valve gap, between negative-pressure sealing body and adjustment axle, be connected with the second elastic component; Valve gap is provided with the gas channel be connected with valve inner in the external world, and the sidewall of valve body is provided with vent; Negative-pressure sealing body moves along the axial direction of valve body, to realize the opening and closing of the negative pressure gas circuit that gas channel and vent are formed.
2. negative one-way valve assembly according to claim 1, is characterized in that, the dead in line of described valve body, valve gap, adjustment axle, negative-pressure sealing body, the first elastic component and the second elastic component.
3. negative one-way valve assembly according to claim 1, is characterized in that, the wall outer surface of described valve gap is formed with the side wall inner surfaces of valve body and is threaded, and valve gap moves along the axial direction of valve body the elastic force adjusting the first elastic component.
4. negative one-way valve assembly according to claim 1, is characterized in that, the wall outer surface of described adjustment axle is formed with the side wall inner surfaces of valve body and is threaded, and adjustment axle moves along the axial direction of valve body the elastic force adjusting the second elastic component.
5. a unmanned plane fuel tank air inlet system and exhaust system two-way valve, is characterized in that, comprises negative one-way valve assembly according to claim 1, also comprises positive seal body; Positive seal body is positioned between negative-pressure sealing body and the first elastic component, and positive seal body is connected on the first elastic component, and the fitting surface of negative-pressure sealing body and positive seal body is provided with through hole; Positive seal body moves along the axial direction of valve body, to realize the opening and closing of the malleation gas circuit that vent, through hole and gas channel are formed.
6. unmanned plane fuel tank air inlet system and exhaust system two-way valve according to claim 5, is characterized in that, the dead in line of described valve body, valve gap, adjustment axle, positive seal body, negative-pressure sealing body, the first elastic component and the second elastic component.
7. unmanned plane fuel tank air inlet system and exhaust system two-way valve according to claim 5, it is characterized in that, described gas channel is distributed on the axial direction of valve gap, the axis of gas channel and the dead in line of valve gap.
8. unmanned plane fuel tank air inlet system and exhaust system two-way valve according to claim 5, is characterized in that, described vent on the sidewall of valve body circumferentially shape be evenly distributed with multiple, the height of multiple vent on valve axis direction is consistent.
9. unmanned plane fuel tank air inlet system and exhaust system two-way valve according to claim 5, it is characterized in that, the wall outer surface of described valve gap is formed with the side wall inner surfaces of valve body and is threaded, and valve gap moves along the axial direction of valve body the elastic force adjusting the first elastic component.
10. unmanned plane fuel tank air inlet system and exhaust system two-way valve according to claim 5, it is characterized in that, the wall outer surface of described adjustment axle is formed with the side wall inner surfaces of valve body and is threaded, and adjustment axle moves along the axial direction of valve body the elastic force adjusting the second elastic component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521014948.9U CN205226503U (en) | 2015-12-08 | 2015-12-08 | Unmanned aerial vehicle oil tank advances exhaust system two -way valve and negative pressure check valve subassembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521014948.9U CN205226503U (en) | 2015-12-08 | 2015-12-08 | Unmanned aerial vehicle oil tank advances exhaust system two -way valve and negative pressure check valve subassembly thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205226503U true CN205226503U (en) | 2016-05-11 |
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| CN201521014948.9U Active CN205226503U (en) | 2015-12-08 | 2015-12-08 | Unmanned aerial vehicle oil tank advances exhaust system two -way valve and negative pressure check valve subassembly thereof |
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| CN (1) | CN205226503U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575626A (en) * | 2017-10-11 | 2018-01-12 | 江苏神通阀门股份有限公司 | A kind of containment isolating valve |
| CN109854792A (en) * | 2018-12-21 | 2019-06-07 | 青州耐威智能科技有限公司 | A kind of unmanned sump two-way air vent valve |
| CN113685290A (en) * | 2021-08-03 | 2021-11-23 | 东风富士汤姆森调温器有限公司 | Fuel evaporation control system based on pilot-operated type oil tank isolating valve |
-
2015
- 2015-12-08 CN CN201521014948.9U patent/CN205226503U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575626A (en) * | 2017-10-11 | 2018-01-12 | 江苏神通阀门股份有限公司 | A kind of containment isolating valve |
| CN109854792A (en) * | 2018-12-21 | 2019-06-07 | 青州耐威智能科技有限公司 | A kind of unmanned sump two-way air vent valve |
| CN113685290A (en) * | 2021-08-03 | 2021-11-23 | 东风富士汤姆森调温器有限公司 | Fuel evaporation control system based on pilot-operated type oil tank isolating valve |
| CN113685290B (en) * | 2021-08-03 | 2023-09-12 | 东风富士汤姆森调温器有限公司 | Fuel evaporation control system based on pilot type oil tank isolation valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 271100, 21 West Main Street, Laiwu, Shandong Co-patentee after: National Network Intelligent Technology Co., Ltd. Patentee after: Laiwu Power Supply Company of State Grid Shandong Electric Power Company Co-patentee after: State Grid Corporation of China Address before: 271100 No. 21 Luxi West Street, Laiwu City, Shandong Province Co-patentee before: Shandong Luneng Intelligent Technology Co., Ltd. Patentee before: Laiwu Power Supply Company of State Grid Shandong Electric Power Company Co-patentee before: State Grid Corporation of China |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201102 Address after: 250101 Electric Power Intelligent Robot Production Project 101 in Jinan City, Shandong Province, South of Feiyue Avenue and East of No. 26 Road (ICT Industrial Park) Patentee after: National Network Intelligent Technology Co.,Ltd. Address before: 271100, 21 West Main Street, Laiwu, Shandong Patentee before: LAIWU POWER SUPPLY COMPANY, STATE GRID SHANDONG ELECTRIC POWER Co.,Ltd. Patentee before: National Network Intelligent Technology Co.,Ltd. Patentee before: STATE GRID CORPORATION OF CHINA |
|
| TR01 | Transfer of patent right |