CN108457826B - Working medium supply device of electric propeller and electric propeller - Google Patents
Working medium supply device of electric propeller and electric propeller Download PDFInfo
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- CN108457826B CN108457826B CN201810193768.3A CN201810193768A CN108457826B CN 108457826 B CN108457826 B CN 108457826B CN 201810193768 A CN201810193768 A CN 201810193768A CN 108457826 B CN108457826 B CN 108457826B
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- working medium
- supply device
- pipeline
- medium supply
- storage tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H—PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H1/00—Using plasma to produce a reactive propulsive thrust
- F03H1/0093—Electro-thermal plasma thrusters, i.e. thrusters heating the particles in a plasma
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H—PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H1/00—Using plasma to produce a reactive propulsive thrust
- F03H1/0006—Details applicable to different types of plasma thrusters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H—PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H1/00—Using plasma to produce a reactive propulsive thrust
- F03H1/0006—Details applicable to different types of plasma thrusters
- F03H1/0031—Thermal management, heating or cooling parts of the thruster
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses an electric propeller working medium supply device and an electric propeller, wherein the electric propeller working medium supply device comprises a working medium storage tank, a heating device, a flow valve, a first pipeline and a second pipeline; the vertical section of the working medium storage tank is of a groove shape, the heating device and the flow valve are arranged in the groove, the air inlet of the flow valve is communicated with the inside of the working medium storage tank through the first pipeline, and the air outlet of the flow valve is communicated with the discharge cavity through the second pipeline. The working medium supply device of the electric propeller and the electric propeller provided by the invention have the advantages that the power consumption of the electric propeller is reduced, and the problem that steam is easy to condense locally is avoided.
Description
Technical Field
The invention relates to the technical field of aerospace electric propulsion, in particular to an electric propeller working medium supply device and an electric propeller.
Background
With the rapid development of the aerospace propulsion technology, the electric propulsion technology which utilizes the ions generated after the ionization of working medium gas or the jet of plasma to generate the reverse thrust gradually occupies a place in the application of the micro-nano satellite by the advantages of high specific impulse, convenient carrying, light weight and the like. The xenon working medium electric propulsion technology represented by ion propulsion and Hall propulsion is developed more mature, and the high-pressure gas propellant storage system adopted by the propulsion system has the problems of heavy dryness of the storage system, low xenon storage density, large storage tank volume and the like. Based on this, the propulsion technology of solid working media starts to develop, and the more mature solid working media propeller mainly comprises the polytetrafluoroethylene pulse plasma propulsion technology and the emission ion propulsion technology of working media such as indium and the like. At present, the specific impulse and efficiency of the polytetrafluoroethylene pulse plasma propulsion technology are low, the impulse of the transmitted ions is high, but the transmitter channel through which the metal ions pass is easy to block. Under such circumstances, electric propulsion technology to heat sublimable or vaporizable solid materials (e.g., iodine) has become a new research focus in recent years. The electric propeller generally adopts a hollow cathode or a radio frequency discharge mode to generate plasma, a high-pressure propellant storage tank is not needed, so that a plastic container is introduced to store solid working media, the dry weight of a storage system is greatly reduced, the electric propeller has the advantages of high storage density, low cost, strong adaptability and the like, and the service life of a satellite effective load and a satellite propulsion system is prolonged.
When the propeller works, the solid working medium needs to be heated when being sublimated or gasified. In the prior art, a working medium storage tank, a flow control system, a pipeline between the working medium storage tank and the flow control system, and a pipeline between the flow control system and a propeller are respectively wound with a heating belt for heating, and the heating mode has long heating circuit, so that the problems of high power consumption, easy local condensation of steam and the like exist.
Disclosure of Invention
The invention aims to solve the problems of high power consumption and easy local condensation of steam of a solid working medium for heating the electric propeller in the conventional mode.
The invention is realized by the following technical scheme:
a working medium supply device of an electric propeller comprises a working medium storage tank, a heating device, a flow valve, a first pipeline and a second pipeline;
the vertical section of the working medium storage tank is of a groove shape, the heating device, the flow valve, the first pipeline and the second pipeline are arranged in the groove, the air inlet of the flow valve is communicated with the inside of the working medium storage tank through the first pipeline, and the air outlet of the flow valve is communicated with the discharge cavity through the second pipeline.
Optionally, the horizontal section of the sidewall of the working medium storage tank is circular or regular polygon.
Optionally, the side wall of the working medium storage tank is a heat-resistant plastic shell.
Optionally, the side wall of the groove is a heat-conducting metal shell.
Optionally, the heating device is a thin film electric heating sheet closely attached to the side wall of the groove.
Optionally, the horizontal cross section of the side wall of the groove is a regular polygon.
Optionally, the working medium supply device of the electric propeller further comprises at least two automatic propelling structures which are arranged inside the working medium storage tank and uniformly distributed around the groove;
the automatic propelling structure comprises an elastic piece and a partition piece, one end of the elastic piece is fixed to the side face of the working medium storage tank, the other end of the elastic piece abuts against one side of the solid working medium, one end of the partition piece is fixed to the side face of the groove, and the other end of the partition piece abuts against the other side of the solid working medium.
Optionally, the elastic member, the partition member and the central point of the horizontal cross section of the side wall of the groove are located on the same horizontal straight line.
Optionally, a centerline of the groove, a centerline of the first conduit, and a centerline of the second conduit coincide.
The invention also provides an electric propeller which comprises a discharge cavity and the working medium supply device of the electric propeller.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the working medium supply device and the electric propeller, the working medium storage tank with the groove-shaped vertical section is adopted, the heating device, the flow valve and the pipeline for transporting steam are arranged in the groove, namely the solid working medium, the flow control system and the pipeline are integrally heated by adopting one set of heating device, and each part does not need to be heated independently, so that the power consumption of the electric propeller is greatly reduced, and the problem that the steam is easy to condense locally is avoided. In addition, the working medium supply device of the electric propeller provided by the invention has a simple structure, and the volume of the electric propeller is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a vertical section of a working medium supply device of an electric propeller according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a horizontal section of a working medium supply device of an electric propeller according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vertical section of another working medium supply device of an electric thruster according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a horizontal section of another electric propeller working medium supply device according to the embodiment of the invention.
Reference numbers and corresponding part names in the drawings:
101-working medium storage tank, 102-solid working medium, 103-elastic member, 104-heating device, 105-separating member, 106-flow valve, 107-first pipeline, 108-second pipeline, 201-discharge cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The embodiment provides a working medium supply device of an electric propeller, which is used in a solid working medium electric propulsion system and is used for sublimating or gasifying the solid working medium by heating the solid working medium. Fig. 1 is a schematic structural diagram of a vertical section of an electric propulsion device working medium supply device of the present embodiment, and fig. 2 is a schematic structural diagram of a horizontal section of the electric propulsion device working medium supply device of the present embodiment, wherein the electric propulsion device working medium supply device comprises a working medium storage tank 101, a heating device 104, a flow valve 106, a first pipeline 107 and a second pipeline 108.
Specifically, the vertical section of the working medium storage tank 101 is groove-shaped. Further, the horizontal section of the sidewall of the working medium storage tank 101 may be a circle or a regular polygon, and the sidewall of the working medium storage tank 101 may be a light heat-resistant plastic shell. The horizontal section of the groove side wall can be circular or regular polygon, and the groove side wall can be a corrosion-resistant heat-conducting metal shell. In this embodiment, the horizontal cross section of the sidewall of the working medium storage tank 101 and the horizontal cross section of the sidewall of the groove are both regular quadrangles.
The flow valve 106 may be a proportional flow valve, and is configured to adjust the flow rate of the working medium gas entering the discharge cavity 201. The heating device 104, the flow valve 106, the first pipeline 107 and the second pipeline 108 are arranged in the groove, an air inlet of the flow valve 106 is communicated with the inside of the working medium storage tank 101 through the first pipeline 107, and an air outlet of the flow valve 106 is communicated with the discharge cavity 201 through the second pipeline 108. Further, the heating device 104 can be a thin film electric heating sheet tightly attached to the side wall of the groove, the heating temperature of the thin film electric heating sheet can be adjusted, and the temperature control range is 0 to one hundred degrees centigrade. When the heating device 104 works, heat energy is transferred into the working medium storage tank 101 through the side wall of the groove, and solid working medium is sublimated or gasified; meanwhile, heat energy generated by the heating device 104 is filled in the groove to heat the flow valve 106, the first pipeline 107 and the second pipeline 108, so that the working medium gas is prevented from condensing in the transmission process, and the problem that the working medium gas condenses to block the pipelines is avoided. The first conduit 107 may be connected to the bottom of the groove or to the side walls of the groove. In this embodiment, to ensure that the working medium gas entering the first pipe 107 is more uniform, the center line of the groove, the center line of the first pipe 107 and the center line of the second pipe 108 are coincident.
When the device provided by the embodiment is adopted to provide working medium gas for an electric propeller, solid working medium 102 is placed in the working medium storage tank 101, then the heating device 104 is started, heat energy generated by the heating device 104 is transmitted into the working medium storage tank 101 through the side wall of the groove, the solid working medium 102 is sublimated or gasified, the generated working medium gas enters the discharge cavity 201 through the first pipeline 107, the flow valve 106 and the second pipeline 108, the discharge cavity 201 ionizes the working medium gas to generate plasma, and the plasma or the led-out ions are ejected out of the discharge cavity 201 to form thrust. It should be noted that the solid working medium 102 may be solid iodine or other solid working mediums, which is not limited in this embodiment.
The electric propulsion ware working medium feeding device that this embodiment provided, working medium storage tank 101's vertical section is the fluted type, heating device 104 flow valve 106 first pipeline 107 and second pipeline 108 sets up in the recess, flow control system and pipeline all integrate to be arranged in being used for solid-state working medium sublimation or during the gasification heating environment promptly, and each part need not the independent heating because reduced electric propulsion ware's consumption by a wide margin, has avoided the easy local problem of condensing of vapour. In addition, the working medium supply device of the electric propeller provided by the invention has a simple structure, and the volume of the electric propeller is reduced.
Example 2
Fig. 3 is a schematic structural diagram of a vertical section of the working medium supply device for an electric propeller of the present embodiment, and fig. 4 is a schematic structural diagram of a horizontal section of the working medium supply device for an electric propeller of the present embodiment. Compared with the working medium supply device of the electric propeller provided by the embodiment 1, the working medium supply device of the electric propeller is characterized in that: the horizontal section of the side wall of the groove is a regular polygon, and the working medium supply device of the electric propeller further comprises at least two automatic propelling structures which are arranged inside the working medium storage tank 101 and are uniformly distributed around the groove. The automatic propelling structure is used for automatically propelling the solid working medium 102 to be close to the heating device 104, so that automatic feeding is realized, and the stability of working medium gas is ensured. In this embodiment, the horizontal cross section of the sidewall of the working medium storage tank 101 and the horizontal cross section of the sidewall of the groove are illustrated as a regular quadrangle.
Specifically, the automatic propelling structure comprises an elastic part 103 and a partition part 105, one end of the elastic part 103 is fixed on the side face of the working medium storage tank 101, the other end of the elastic part 103 abuts against one side of the solid working medium 102, one end of the partition part 105 is fixed on the side face of the groove, and the other end of the partition part 105 abuts against the other side of the solid working medium 102. The elastic member 103 is used for providing elastic thrust to the solid working medium 102, and may be a spring. The partition 105 is used for forming a gap between the solid working medium 102 and the side wall of the working medium storage tank 101, so that the sublimated or gasified working medium gas can flow into the first pipeline 107 through the gap. Further, the partition 105 may be a corrosion-resistant heat-conductive metal block, and the thickness of the partition in the horizontal direction may be set according to the flow rate of the working medium gas required by the electric propulsion device with different thrusts. In the present embodiment, the thickness of the separator 105 in the horizontal direction is 1 mm to 2 mm. Further, the center points of the horizontal cross sections of the elastic member 103, the partition 105 and the side wall of the groove may be located on the same horizontal straight line, so that the force applied by the elastic member 103 and the partition 105 to the solid working medium 102 is on the same horizontal plane.
When the device provided by the embodiment is adopted to provide working medium gas for the electric propeller, a large solid working medium is divided into a plurality of blocks to be placed in the working medium storage tank 101, and each solid working medium 102 abuts between the elastic part 103 and the separating part 105. The heating device 104 is used for heating, the solid working medium 102 close to the heating device 104 is firstly sublimated or gasified, along with the consumption of the solid working medium 102, the elastic part 103 enables the solid working medium 102 to be attached to the isolating part 105, the solid working medium 102 is automatically pushed to be close to the heating device 104, the distance between the solid working medium 102 and the heating device 104 is kept unchanged, automatic feeding is realized, and the stability of working medium gas is maintained.
Example 3
The embodiment provides an electric propeller which comprises a discharge cavity and a working medium supply device. The discharge cavity can be an existing structure, such as a discharge cavity in a hollow cathode discharge form or a discharge cavity in a radio frequency antenna discharge form, and the working medium supply device is the working medium supply device of the electric propeller provided in embodiment 1 or embodiment 2.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The working medium supply device of the electric propeller is characterized by comprising a working medium storage tank (101), a heating device (104), a flow valve (106), a first pipeline (107) and a second pipeline (108);
the vertical section of the working medium storage tank (101) is of a groove type, the heating device (104), the flow valve (106), the first pipeline (107) and the second pipeline (108) are arranged in the groove, the air inlet of the flow valve (106) is communicated with the inside of the working medium storage tank (101) through the first pipeline (107), and the air outlet of the flow valve (106) is communicated with the discharge cavity (201) through the second pipeline (108);
the horizontal section of the side wall of the groove is a regular polygon, and the working medium supply device of the electric propeller further comprises at least two automatic propelling structures which are arranged in the working medium storage tank (101) and uniformly distributed around the groove;
the automatic propelling structure comprises an elastic piece (103) and a partition piece (105), one end of the elastic piece (103) is fixed to the side face of the working medium storage tank (101), the other end of the elastic piece (103) is abutted to one side of the solid working medium (102), one end of the partition piece (105) is fixed to the side face of the groove, and the other end of the partition piece (105) is abutted to the other side of the solid working medium (102).
2. An electric propulsion working medium supply device according to claim 1, characterised in that the horizontal cross-section of the side wall of the working medium tank (101) is circular or regular polygonal.
3. Working medium supply device for an electric propulsion device according to claim 1, characterised in that the side walls of the working medium tank (101) are heat-resistant plastic shells.
4. An electric propulsion working medium supply device according to claim 1, characterised in that the groove side walls are heat conducting metal shells.
5. An electric propulsion working medium supply device according to claim 1, characterised in that the heating device (104) is a thin-film electric heating sheet that fits closely over the side walls of the recess.
6. An electric propulsion means working medium supply device according to claim 1, characterised in that the elastic member (103), the partition (105) and the centre point of the horizontal cross-section of the recess side wall are located on the same horizontal straight line.
7. An electric propeller working medium supply device according to claim 1, characterised in that the centre line of the recess, the centre line of the first duct (107) and the centre line of the second duct (108) coincide.
8. An electric propulsion device, characterized in that it comprises a discharge chamber (201) and an electric propulsion device working medium supply device according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193768.3A CN108457826B (en) | 2018-03-09 | 2018-03-09 | Working medium supply device of electric propeller and electric propeller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193768.3A CN108457826B (en) | 2018-03-09 | 2018-03-09 | Working medium supply device of electric propeller and electric propeller |
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| Publication Number | Publication Date |
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| CN108457826A CN108457826A (en) | 2018-08-28 |
| CN108457826B true CN108457826B (en) | 2020-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810193768.3A Active CN108457826B (en) | 2018-03-09 | 2018-03-09 | Working medium supply device of electric propeller and electric propeller |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578234B (en) * | 2018-12-10 | 2020-03-17 | 兰州空间技术物理研究所 | Working medium supply assembly of pulse plasma thruster |
| CN110374830A (en) * | 2019-07-15 | 2019-10-25 | 上海交通大学 | Storage tank is heated in heat radiation suitable for iodine working medium electric propulsion device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5175996A (en) * | 1990-10-16 | 1993-01-05 | Olin Corporation | Apparatus for propellant flow control at low mass flow rates in zero G environment |
| WO2014022785A2 (en) * | 2012-08-02 | 2014-02-06 | Escape Dynamics, Inc. | Externally powered vehicle propulsion system |
| US20160333865A1 (en) * | 2014-04-09 | 2016-11-17 | Busek Co., Inc. | Propellant isolation barrier |
| CN105762618B (en) * | 2014-12-17 | 2019-06-04 | 中国科学院大连化学物理研究所 | A kind of long-time iodine flow feedway |
| US20160333826A1 (en) * | 2015-05-12 | 2016-11-17 | Busek Co., Inc. | Post-Launch CO2 Gas Production System |
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