CN104047734A - Aviation piston engine starting valve and aviation piston engine with same - Google Patents
Aviation piston engine starting valve and aviation piston engine with same Download PDFInfo
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- CN104047734A CN104047734A CN201410275717.7A CN201410275717A CN104047734A CN 104047734 A CN104047734 A CN 104047734A CN 201410275717 A CN201410275717 A CN 201410275717A CN 104047734 A CN104047734 A CN 104047734A
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Abstract
The invention provides an aviation piston engine starting valve and an aviation piston engine with the same. The aviation piston engine starting valve comprises a valve case, a valve body and a pretightening part. The valve case is provided with a containing cavity. The first end of the valve case is provided with a first end opening communicated with the containing cavity. The first end opening is provided with a conical face. The valve case is provided with an air inlet hole which penetrates through the valve case in the radial direction and is communicated with the containing cavity. The valve body is movably arranged in the containing cavity. The first end of the valve body is provided with a sealing conical face matched with the conical face of the first end opening. The valve body is provided with the opening position for separating the sealing conical face from the first end opening, and the closing position for attaching the sealing conical face to the first end opening. The pretightening part is connected between the valve body and the valve body case, and exerts force on the valve body to enable the valve body to move towards the closing position. According to the aviation piston engine starting valve, tight sealing can be achieved, and the operation safety of the aviation piston engine is protected.
Description
Technical field
The present invention relates to aviation power apparatus field, in particular to a kind of aviation piston engine starting valve and there is its aviation piston engine.
Background technique
Aviation piston engine need to have while starting to rotate external force to drive by static.The effect of starting system is exactly to supply with external force to aviation piston engine, and aviation piston engine is rotated by static beginning, normally works until aviation piston engine reaches regulation rotating speed.Piston 6A aeroengine relies on pneumatic starting, and its starting system is made up of air compressor, conduit, random gas cylinder, cold air starting sparger, starting valve and priming system etc.Aviation piston engine starting valve is as the important component part of starting system, its design is become to the key of aviation piston engine design field, the working procedure of starting valve is, in the time that aviation piston engine starts, starting valve is opened, pressurized air enters combustion chamber of air cylinder, promotes piston movement; When after aviation piston engine starting, starting valve is closed, and starting system and cylinder are separated, and ensures the sealing of cylinder.And in prior art, not yet there is the starting valve that can finely be applicable to by the aviation piston engine of pneumatic starting.
Summary of the invention
The present invention aims to provide a kind of aviation piston engine starting valve and has its aviation piston engine, does not have to be applicable to well the problem by the aviation piston engine starting valve of pneumatic starting to solve in prior art.
To achieve these goals, according to an aspect of the present invention, a kind of aviation piston engine starting valve is provided, this aviation piston engine starting valve comprises: valve body, valve body has receiving cavity, the first end of valve body has the first port being communicated with receiving cavity, and the first port has conical surface, is provided with the inlet hole that radially runs through valve body and be communicated with receiving cavity on valve body; Valve cast, valve cast is arranged in receiving cavity movably, the first end of valve cast has the sealing cone coordinating with the conical surface of the first port, and valve cast has the open position of sealing cone and the disengaging of the first port and the closed position of sealing cone and the laminating of the first port; Preload piece, preload piece is connected between valve cast and valve body, and valve cast is applied to the power moving to closed position.
Further, valve body comprises: valve lid, and valve lid has cavity; Valve main body, valve main body has the through hole that runs through valve main body along the length direction of valve main body, valve lid is set in outside valve main body and is fixedly connected with the second end of valve main body, the through hole of the cavity of valve lid and valve main body forms receiving cavity, and the opening of the first end of valve main body is the first port.
Further, inlet hole is arranged in valve main body, aviation piston engine starting valve also comprises pilot manifold pipe joint, pilot manifold pipe joint comprises mounting hole and annular venting cavity, mounting hole runs through pilot manifold pipe joint vertically, valve body passes mounting hole and is arranged on pilot manifold pipe joint, and inlet hole is communicated with venting cavity.
Further, valve cast comprises: guide section, and guide section is positioned at receiving cavity, and the second end of guide section is provided with the stopper protrusion of backstop preload piece; Cross gas section, the second end of crossing gas section is connected with the first end of guide section, and the cross section of gas section and guide section joint shrink gradually, between the perisporium of mistake gas section and the inwall of valve body, there is the space that supplied gas is passed through, inlet hole is communicated with space; Seal section, seal section was connected to the first end of gas section, and the cross section of seal section is along expanding gradually and form sealing cone away from the direction of crossing gas section.
Further, valve cast also comprised gas guiding groove, crossed gas guiding groove and was arranged on gas section, and extend along the length direction of crossing gas section, crossed gas guiding groove and was caved inward and formed by the perisporium of crossing gas section.
Further, the shape of cross section of crossing gas guiding groove is circular arc, and the quantity of crossing gas guiding groove is multiple, and multiple gas guiding grooves of crossing arrange along the even interval of the circumferencial direction of crossing gas section.
Further, the stopper protrusion of guide section is stop nut, and stop nut is fixedly installed on the second end of guide section and locks by safety fuse cutout.
Further, valve body has the guide protrusions coordinating with guide section, and guide protrusions is formed to receiving cavity internal projection by the inner circle wall of valve body.
Further, preload piece is preloading spring, and the first end of preloading spring is connected to one end of the close stopper protrusion of guide protrusions, and the second end of preloading spring is connected in stopper protrusion, and when valve cast is in the closed position, preloading spring is in compressive state.
According to a further aspect in the invention, a kind of aviation piston engine is provided, comprise engine cylinder-body and aviation piston engine starting valve, aviation piston engine starting valve is above-mentioned aviation piston engine starting valve, the first end of the valve body of aviation piston engine starting valve is provided with thread section, and valve body is connected with engine cylinder-body by thread section.
Apply technological scheme of the present invention, aviation piston engine starting valve comprises valve body, valve cast and preload piece, valve body has receiving cavity, the first end of valve body has the first port being communicated with receiving cavity, the first port has conical surface, is provided with the inlet hole that radially runs through valve body and be communicated with receiving cavity on valve body; Valve cast is arranged in receiving cavity movably, and the first end of valve cast has the sealing cone coordinating with the conical surface of the first port, and valve cast has the open position of sealing cone and the disengaging of the first port and the closed position of sealing cone and the laminating of the first port; Preload piece is connected between valve cast and valve body, and valve cast is applied to the power moving to closed position.By preload piece, valve cast is applied to the power in receiving cavity, can make sealing cone and the tight-lipped close fit of first end of valve cast, and then under ensureing that aviation piston engine starting valve in off position, valve cast is in the closed position, and the sealing of aviation piston engine starting valve is tight, without leaking.
Brief description of the drawings
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The aviation piston engine that Fig. 1 shows embodiments of the invention starts the sectional view of valve in closed condition;
Fig. 2 shows the A-A of the aviation piston engine starting valve in Fig. 1 to view; And
The aviation piston engine that Fig. 3 shows embodiments of the invention starts the sectional view of valve in open mode.
Description of reference numerals: 11, receiving cavity; 12, valve lid; 13, valve main body; 131, inlet hole; 20, valve cast; 21, guide section; 22, cross gas section; 221, cross gas guiding groove; 23, seal section; 24, stop nut; 30, preload piece; 40, pilot manifold pipe joint.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
As shown in Figures 1 to 3, according to embodiments of the invention, aviation piston engine starting valve comprises valve body, valve cast 20 and preload piece 30, valve body has receiving cavity 11, the first end of valve body has the first port being communicated with receiving cavity 11, the first port has conical surface, is provided with the inlet hole 131 that radially runs through valve body and be communicated with receiving cavity 11 on valve body; Valve cast 20 is arranged in receiving cavity 11 movably, the first end of valve cast 20 has the sealing cone coordinating with the conical surface of the first port, and valve cast 20 has the open position of sealing cone and the disengaging of the first port and the closed position of sealing cone and the laminating of the first port; Preload piece 30 is connected between valve cast 20 and valve body, and valve cast 20 is applied to the power moving to closed position.By preload piece 30, valve cast 20 is applied to the power in receiving cavity 11, can make sealing cone and the tight-lipped close fit of first end of valve cast 20, and then under ensureing that aviation piston engine starting valve in off position, valve cast 20 is in the closed position, and the sealing of aviation piston engine starting valve is tight, without leaking.
In the present embodiment, in order conveniently to process, to cut down finished cost, ensure that valve body can meet user demand simultaneously, have good sealing, valve body comprises valve lid 12 and valve main body 13.Valve lid 12 has cavity.
Valve main body 13 has the through hole that runs through valve main body 13 along the length direction of valve main body 13, valve lid 12 is set in outside valve main body 13 and is fixedly connected with the second end of valve main body 13, the through hole of the cavity of valve lid 12 and valve main body 13 forms receiving cavity 11, and the opening of the first end of valve main body 13 is the first port.
Between valve lid 12 and the second end of valve main body 13, can be fixedly connected with by modes such as welding, be threaded, only need to ensure both stable connections and joint sealing well.In the present embodiment, between valve lid 12 and the second end of valve main body 13, adopt and be threaded, so both can ensure sealing, can dismantle easily and install again, can save processing cost and installation cost.
In the present embodiment, inlet hole 131 is arranged in valve main body 13, aviation piston engine starting valve also comprises pilot manifold pipe joint 40, pilot manifold pipe joint 40 comprises mounting hole and annular venting cavity, mounting hole runs through pilot manifold pipe joint 40 vertically, valve body passes mounting hole and is arranged on pilot manifold pipe joint 40, and inlet hole 131 is communicated with venting cavity.Can be connected with the gas handling system of aviation piston engine by pilot manifold pipe joint 40, and start air feed in valve to aviation piston engine.
Preferably, in order to ensure the sealing of joint of valve body and pilot manifold pipe joint 40, between the upper surface of valve body and pilot manifold pipe joint 40 and lower surface, be provided with gasket seal.Specifically, between the upper surface of the lower end surface of valve lid 12 and pilot manifold pipe joint 40, be provided with a gasket seal, the periphery of valve main body 13 has an outward flange, between the upper-end surface of this outward flange and the lower surface of pilot manifold pipe joint 40, is provided with a gasket seal.Between the outward flange of pilot manifold pipe joint 40, valve lid 12 and valve main body 13, mutually push against like this, ensured the connection sealing of valve body and pilot manifold pipe joint 40.
In conjunction with referring to Fig. 1 and 3, valve cast 20 comprises guide section 21, crosses gas section 22 and seal section 23.
Wherein, guide section 21 is positioned at receiving cavity 11, and the second end of guide section 21 is provided with the stopper protrusion of backstop preload piece 30.Guide section 21, for ensureing the motion track of valve cast 20, prevents that in movement process, valve cast 20 is shaken or radial-play, to ensure that aviation piston engine starts valve and supplies gas steadily, reduces the noise that shake produces.
In the present embodiment, the stopper protrusion of guide section 21 is stop nut 24, and stop nut 24 is fixedly installed on the second end of guide section 21 and locks by safety fuse cutout.In other embodiments, stopper protrusion can be other structure, for example, is fixedly installed on the flange outside guide section.Valve body has the guide protrusions coordinating with guide section 21, and guide protrusions is formed to receiving cavity 11 internal projection by the inner circle wall of valve body.
The second end of crossing gas section 22 is connected with the first end of guide section 21, and crossing gas section 22 shrinks gradually with the cross section of the valve cast 20 of guide section 21 joints, cross between the perisporium of gas section 22 and the inwall of valve body and have the space that supplied gas is passed through, inlet hole 131 is communicated with space.The gas entering from pilot manifold pipe joint 40 passes through in the gap of crossing between gas section 22 and valve body inwall, and flows to the first port.
Seal section 23 was connected to the first end of gas section 22, and the cross section of seal section 23 is along expanding gradually and form sealing cone away from the direction of crossing gas section 22.Can ensure that by the sealing cone of seal section 23 aviation piston engine starting valve in off position time, gas can not pass back in valve body from the first port, ensures the Security of aviation piston engine work.
On the side face of seal section 23, be provided with annular groove in order to setting tool, so that and the valve body grinding-in conical surface.
In conjunction with referring to Fig. 2, preferably, valve cast 20 also comprised gas guiding groove 221, crossed gas guiding groove 221 and was arranged on gas section 22, and extend along the length direction of crossing gas section 22, crossed gas guiding groove 221 and was caved inward and formed by the perisporium of crossing gas section 22.Guide gas flow by crossing gas guiding groove 221, ensure that gas flow is steady, and then ensure that aviation piston engine starting valve is can air-flow when air feed in the cylinder body that be aviation piston engine steady, finally ensure that aviation piston engine starting is steady.
Preferably, the shape of cross section of crossing gas guiding groove 221 is circular arc, and the quantity of crossing gas guiding groove 221 is multiple, and multiple gas guiding grooves 221 of crossing arrange along the even interval of the circumferencial direction of crossing gas section 22.In the present embodiment, the quantity of gas guiding groove 221 is 3 excessively.
In the present embodiment, preload piece 30 is preloading spring, the first end of preloading spring is fixedly connected on one end of close stopper protrusion of guide protrusions, and the second end of preloading spring is fixedly connected in stopper protrusion, and when valve cast 20 is in the closed position, preloading spring is in compressive state.In other embodiments, preload piece 30 can be other structure, for example, and resilient sleeve.In other embodiments, the first end of preloading spring can be pushed against on one end of close stopper protrusion of guide protrusions, and the second end of preloading spring is pushed against in stopper protrusion.
According to a further aspect in the invention, aviation piston engine comprises engine cylinder-body and starting valve, this starting valve is above-mentioned aviation piston engine starting valve, the first end of the valve body of aviation piston engine starting valve is provided with thread section, and valve body is connected with engine cylinder-body by thread section.
In the present embodiment, this aviation piston engine starting valve is applied on aviation piston engine, in the time that aviation piston engine need to start, supply gas in valve body by pilot manifold pipe joint 40, pressure in valve body increases gradually along with the increase of gas, when the lower end surface upward pressure sum that gas acts on seal section in preload piece 30 acts on power on valve cast 20 and engine cylinder-body is less than gas in valve body and acts on the pressure on seal section 23, valve cast 20 is pushed outside valve body and moves, seal face and the first port depart from, gas flows out by space between the two, and enter in the cylinder body of aviation piston engine.When after aviation piston engine starting, be subject to pressure in engine cylinder-body and the power of preload piece 30, seal section 23 is closely fitted on the first port, and aviation piston engine is started to valve sealing, has avoided gas leakage, has ensured security of operation.
From above description, can find out, the above embodiments of the present invention have realized following technique effect: by this aviation piston engine starting valve is applied on aviation piston engine, make in the starting process of aviation piston engine, pressurized air can enter rapidly and safely in the cylinder of aviation piston engine, make the aviation piston engine can normal starting, and in the time that aviation piston engine is normally worked, starting system and cylinder are separated, guarantee that aviation piston engine can normally work, avoid gas leakage, improve sealing, ensure cylinder pressurization ratio.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an aviation piston engine starting valve, is characterized in that, comprising:
Valve body, described valve body has receiving cavity (11), the first end of described valve body has the first port being communicated with described receiving cavity (11), described the first port has conical surface, is provided with the inlet hole (131) that radially runs through described valve body and be communicated with described receiving cavity (11) on described valve body;
Valve cast (20), described valve cast (20) is arranged in described receiving cavity (11) movably, the first end of described valve cast (20) has the sealing cone coordinating with the conical surface of described the first port, and described valve cast (20) has the open position of described sealing cone and described the first port disengaging and the closed position of described sealing cone and described the first port laminating;
Preload piece (30), described preload piece (30) is connected between described valve cast (20) and described valve body, and described valve cast (20) is applied to the power moving to described closed position.
2. aviation piston engine starting valve according to claim 1, is characterized in that, described valve body comprises:
Valve lid (12), described valve lid (12) has cavity;
Valve main body (13), in described valve main body (13), be provided with the through hole that runs through described valve main body (13) along the length direction of described valve main body (13), described valve lid (12) is set in outside described valve main body (13) and is fixedly connected with the second end of described valve main body (13), the through hole of the cavity of described valve lid (12) and described valve main body (13) forms described receiving cavity (11), and the opening of the first end of described valve main body (13) is described the first port.
3. aviation piston engine starting valve according to claim 2, it is characterized in that, described inlet hole (131) is arranged in described valve main body (13), described aviation piston engine starting valve also comprises pilot manifold pipe joint (40), described pilot manifold pipe joint (40) comprises mounting hole and annular venting cavity, described mounting hole runs through described pilot manifold pipe joint (40) vertically, described valve body passes described mounting hole and is arranged on described pilot manifold pipe joint (40), described inlet hole (131) is communicated with described venting cavity.
4. aviation piston engine starting valve according to claim 1, is characterized in that, described valve cast (20) comprising:
Guide section (21), described guide section (21) is positioned at described receiving cavity (11), and the second end of described guide section (21) is provided with the stopper protrusion of preload piece (30) described in backstop;
Cross gas section (22), described the second end of crossing gas section (22) is connected with the first end of described guide section (21), and the described gas section (22) of crossing is shunk gradually with the cross section of described guide section (21) joint, between the perisporium of described gas section (22) excessively and the inwall of described valve body, have the space that supplied gas is passed through, described inlet hole (131) is communicated with described space;
Seal section (23), described seal section (23) is connected to the described first end of crossing gas section (22), and the cross section of described seal section (23) is along expanding gradually and form described sealing cone away from the described direction of crossing gas section (22).
5. aviation piston engine starting valve according to claim 4, it is characterized in that, described valve cast (20) also comprised gas guiding groove (221), the described gas guiding groove (221) of crossing is arranged on the described gas section (22) of crossing, and extend along the described length direction of crossing gas section (22), the described gas guiding groove (221) of crossing is caved inward and is formed by the described perisporium of crossing gas section (22).
6. aviation piston engine starting valve according to claim 5, it is characterized in that, the described shape of cross section of crossing gas guiding groove (221) is circular arc, and the described quantity of crossing gas guiding groove (221) is multiple, described multiple gas guiding grooves (221) of crossing arrange along the described even interval of circumferencial direction of crossing gas section (22).
7. aviation piston engine starting valve according to claim 4, it is characterized in that, the described stopper protrusion of described guide section (21) is stop nut (24), and described stop nut (24) is fixedly installed on the second end of described guide section (21) and locks by safety fuse cutout.
8. aviation piston engine starting valve according to claim 4, it is characterized in that, described valve body has the guide protrusions coordinating with described guide section (21), and described guide protrusions is formed to described receiving cavity (11) internal projection by the inner circle wall of described valve body.
9. aviation piston engine starting valve according to claim 8, it is characterized in that, described preload piece (30) is preloading spring, the first end of described preloading spring is connected to one end of the close described stopper protrusion of described guide protrusions, the second end of described preloading spring is connected in described stopper protrusion, when described valve cast (20) is in the closed position described in preloading spring in compressive state.
10. an aviation piston engine, it is characterized in that, comprise engine cylinder-body and aviation piston engine starting valve, described aviation piston engine starting valve is the starting of the aviation piston engine described in any one valve in claim 1 to 9, the first end of the valve body of described aviation piston engine starting valve is provided with thread section, and described valve body is connected with described engine cylinder-body by described thread section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410275717.7A CN104047734B (en) | 2014-06-19 | 2014-06-19 | Aviation piston engine starts valve and has its aviation piston engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410275717.7A CN104047734B (en) | 2014-06-19 | 2014-06-19 | Aviation piston engine starts valve and has its aviation piston engine |
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| CN104047734A true CN104047734A (en) | 2014-09-17 |
| CN104047734B CN104047734B (en) | 2016-06-01 |
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| CN201410275717.7A Active CN104047734B (en) | 2014-06-19 | 2014-06-19 | Aviation piston engine starts valve and has its aviation piston engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106089441A (en) * | 2016-06-07 | 2016-11-09 | 中国南方航空工业(集团)有限公司 | Engine bleeder controlling device for doors alive and engine control system |
| CN111058949A (en) * | 2020-01-06 | 2020-04-24 | 南京航空航天大学 | Pressure-controlled oil drainage valve for starting of turboshaft engine and use method thereof |
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| CN111058949B (en) * | 2020-01-06 | 2021-01-15 | 南京航空航天大学 | Pressure-controlled oil drainage valve for starting of turboshaft engine and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104047734B (en) | 2016-06-01 |
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Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |