CN104295462A - Choke for adjusting flow rate of electric thrustor propellant and adjusting method - Google Patents
Choke for adjusting flow rate of electric thrustor propellant and adjusting method Download PDFInfo
- Publication number
- CN104295462A CN104295462A CN201410452328.7A CN201410452328A CN104295462A CN 104295462 A CN104295462 A CN 104295462A CN 201410452328 A CN201410452328 A CN 201410452328A CN 104295462 A CN104295462 A CN 104295462A
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- packing ring
- throttling chamber
- hole
- flow rate
- counterbore
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Classifications
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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
Abstract
The invention discloses a choke for adjusting the flow rate of an electric thrustor propellant. The choke comprises a piston pipeline, a nut, a first gasket, a second gasket, a throttling cavity and a porous plug piece. According to the choke, the machining difficulty of the porous plug piece is lowered, and technological adjustment of the porous plug piece in the pressing, forming and linear cutting processes is facilitated; the working procedure steps of the porous plug piece in the flow rate testing process of the propellant are reduced, the flow rate testing of the propellant through the porous plug piece can be realized in one step, and the development cycle of a restriction choke is shortened; the application and adjustment range of a porous metal material in the aspect of flow rate adjustment of the restriction choke is enlarged by the choke, and therefore the porous plug piece made of the porous metal material can be applied to electric thrustors of more types and satellite platforms.
Description
Technical field
The present invention relates to a kind of electric thruster propellant agent flow rate adjustment Fluistor and regulating method, can be used for the electric thruster such as ion thruster, hall thruster propellant agent flow rate adjustment occasion, belong to test and measuring field.
Background technique
Fluistor is the assembly of the electric thruster such as ion thruster, hall thruster propellant agent flow rate adjustment most critical.Document " application of porous metal material on small flow rate flow controller; " powder metallurgy industry " the 17th volume, in February, 2007, the 1st phase, the 34th page ~ the 37th page ", describing porous metal material in flow controller flow rate is the application within the scope of 1sccm ~ 20sccm.In the application, utilize the mode of laser bonding, porous patch is welded on throttling chamber, and pass through the mode of " welding-flow rate test-welds-flow rate test more again " successive ignition welding, change the valid circulation area of porous patch on throttling chamber, and then realize flow rate adjustment function, finally meet the propellant agent flowrate demand that electric thruster normally works.
Adopt the mode of laser bonding, being welded on by porous patch on throttling chamber requires higher to the quality of fit between porous patch and throttling chamber, be unfavorable for the processing of porous patch, cause its difficulty of processing in compacting, sizing and Linear cut process comparatively large, solder yield is poor.Simultaneously, be 50sccm ~ 200sccm application in larger scope and flow rate adjustment for porous metal material in flow controller flow rate, because the porosity of porous patch increases with the increase of its design flow rate, laser bonding mode is adopted if continue, around weld seam, very easily produce small opening, directly cause scrapping of throttling chamber.
Summary of the invention
The object of this invention is to provide a kind of electric thruster propellant agent flow rate adjustment Fluistor, change the mounting type of porous patch on throttling chamber, make the valid circulation area of porous patch on throttling chamber manually, real-time, tunable.By this mounting type, the difficulty of processing of porous patch can be reduced, improve up-to-standard rate, expand the using scope of porous metal material in electric thruster propellant agent flow rate regulatory function.
In order to solve the problems of the technologies described above, the present invention is achieved in that
A kind of electric thruster propellant agent flow rate adjustment Fluistor, comprising: piston pipeline (1), nut (2), the first packing ring (3), the second packing ring (4), throttling chamber (5) and porous patch (6);
Described throttling chamber (5) is cylindrical-shaped structure, and its inside has the counterbore coaxial with the cylindrical body of throttling chamber (5), and counterbore base has with described counterbore UNICOM and the through hole coaxial with throttling chamber (5); Described through hole internal diameter is less than counterbore internal diameter; Throttling chamber (5) cylindrical is processed with outside thread;
Described piston pipeline (1) is made up of the upper cylinder integrally processed and lower cylinder, and the radius of lower cylinder is greater than cylindrical radius; Piston pipeline (1) inside is processed with the through hole coaxial with lower cylinder; The cylindrical of described lower cylinder coordinates with throttling chamber (5) counterbore inner circle;
Described nut (2) has the column structure of circular counter bore for one end, and the other end has through hole that is coaxial with this circular counter bore and that coordinate with the upper cylinder cylindrical of piston pipeline (1); The inwall of described circular counter bore is processed with the internal thread with the upper outside screw-thread fit of throttling chamber (5) cylindrical;
Described first packing ring (3) and the second packing ring (4) are the loop configuration body of fine silver material, cylindrical coordinates with throttling chamber (5) counterbore inwall, and internal diameter is greater than the internal diameter of throttling chamber (5) through hole and piston pipeline (1) through hole; The end face that first packing ring (3) is relative with the second packing ring (4) is all processed with circular groove, thus on the sidewall of the inner circle of loop configuration body forming station terrace;
The groove of described second packing ring (4) is upwards placed on throttling chamber (5) counterbore base, described porous patch (6) is placed on the second packing ring (4), the outer rim of porous patch (6) one end coordinates with the inner circle step surface of the second packing ring (4), the groove of the first packing ring (3) is placed on the second packing ring (4) downwards, and its inner circle step surface coordinates with the outer rim of porous patch (6) lower end; The lower cylinder of piston pipeline (1) is placed in the counterbore of throttling chamber (5); The upper cylinder of described piston pipeline (1) passes from the through hole of nut (2), in the counterbore screwing into nut (2) of described throttling chamber (5);
When described two packing rings are in and deformed state does not occur, between the counterbore bottom surface of nut (2) and the upper-end surface in described throttling chamber (5), leave gap.
The counterbore bottom surface of described throttling chamber (5) is processed with a circle tooth form protruding; The bottom surface of the lower cylinder of described piston pipeline (1) is processed with a circle tooth form projection.
The internal diameter of described first packing ring (3) and the second packing ring (4) 3mm at least larger than the through hole internal diameter of described throttling chamber (5) through hole and piston pipeline (1).
The depth of groove of described first packing ring (3) and the second packing ring (4) is less than 0.5mm.
Described throttling chamber (5), piston pipeline (1) all adopt stainless steel material to process with nut (2).
Based on a regulating method for above-mentioned Fluistor, comprise the steps:
(1), the through hole of throttling chamber (5) is connected electric thruster propulsive mechanism device, the through hole of piston pipeline (1) connects electric thruster, then regulate the pressure store of propulsive mechanism device, make propellant pressure value in the through hole of throttling chamber (5) remain within the scope of required pressure value;
(2) propellant agent flow rate in propellant agent flow rate testing apparatus test throttling chamber (5) through hole, is adopted;
(3), continuous fastening nut (2), control the deformation of the first packing ring (3) and the second packing ring (4), until porous patch (6) valid circulation area makes propellant agent flow rate in throttling chamber (5) through hole meet the normal job requirement of electric thruster.
The present invention has following beneficial effect:
(1) Fluistor of the present invention reduces the difficulty of processing of porous patch, is conducive to the process debugging of porous patch in the processes such as compacting, sizing and Linear cut;
(2) Fluistor of the present invention decreases the process of porous patch in propellant agent flow rate test process, the propellant agent flow rate of porous patch can be made to test and settle at one go, shorten the lead time of flow controller;
(3) Fluistor of the present invention expands the application of porous metal material in flow controller flow rate adjustment and regulation range, and the porous patch that porous metal material is made can apply electric thruster product and the satellite platform of more polytypic.
Accompanying drawing explanation
Fig. 1 is the structural representation of electric thruster propellant agent flow rate adjustment Fluistor of the present invention.
Wherein, 1-piston pipeline, 2-nut, 3-first packing ring, 4-second packing ring, 5-throttling chamber, 6-porous patch.
Embodiment
To develop simultaneously embodiment below in conjunction with accompanying drawing, describe the present invention.
Electric thruster propellant agent flow rate adjustment Fluistor of the present invention, comprises piston pipeline 1, nut 2, first packing ring 3, second packing ring 4, throttling chamber 5 and porous patch 6; Throttling chamber 5 is cylindrical-shaped structure, and its inside has the counterbore coaxial with throttling chamber 5 cylindrical body, and counterbore base has the through hole coaxial with throttling chamber 5 cylindrical body; Through hole internal diameter is less than counterbore internal diameter; Throttling chamber 5 circle end face is processed with outside thread;
Piston pipeline 1 is made up of the upper cylinder integrally processed and lower cylinder, and the radius of lower cylinder is greater than cylindrical radius; Piston pipeline 1 inside is processed with the through hole coaxial with lower cylinder; The cylindrical of lower cylinder coordinates with throttling chamber 5 counterbore inner circle;
Nut 2 has the column structure of circular counter bore for one end, and the other end has through hole that is coaxial with this circular counter bore and that coordinate with cylinder cylindrical on piston pipeline 1; The inner wall end surface of circular counter bore is processed with the internal thread coordinated with throttling chamber 5 outside thread;
First packing ring 3 and the second packing ring 4 are the loop configuration body of fine silver material, and packing ring cylindrical coordinates with throttling chamber 5 counterbore inwall, and its internal diameter is greater than the internal diameter of throttling chamber 5 through hole and piston pipeline 1 through hole; The end face that first packing ring 3 is relative with the second packing ring 4 is all processed with circular groove, thus on the inner circle sidewall of loop configuration body forming station terrace;
The groove of the second packing ring 4 is upwards placed in throttling chamber 5 counterbore base, porous patch 6 is placed on the second packing ring 4, the end face of porous patch 6 one end coordinates with the inner circle step surface of the second packing ring 4, the groove of the first packing ring 3 is placed on porous patch 6 downwards, coordinating of the end face of its inner circle step surface and porous patch 6 the other end; The lower cylinder of piston pipeline 1 is placed in the counterbore in throttling chamber 5; The upper cylinder of piston pipeline 1 passes from the through hole of nut 2, the internal thread screwing into nut 2 in throttling chamber 5;
When two packing rings are in and deformed state does not occur, between the counterbore bottom surface of nut 2 and the upper-end surface in described throttling chamber 5, leave gap.
The working principle of electric thruster propellant agent flow rate adjustment Fluistor of the present invention is as follows:
The second packing ring 4 is placed in the bottom of throttling chamber 5 counterbore, throttling chamber 5 and the second packing ring 4 adopt edge seal, second packing ring 4 adopts fine silver material, end surface machined grooves, the internal diameter of groove is consistent with the external diameter of porous patch 6, further groove is installed upwards, throttling chamber 5 stainless steel processing, the through hole internal diameter 3mm at least larger than the through hole internal diameter in throttling chamber 5 of the second packing ring 4; Porous patch 6 embeds in the groove of the second packing ring 4; Material and structural type first packing ring 3 consistent with the second packing ring 4 are inverted in throttling chamber 5, and guarantee that porous patch 6 embeds in the groove of the first packing ring 3.Because the thickness of porous patch 6 is generally 1mm, the depth of groove of the first packing ring 3 and the second packing ring 4 all needs to be less than 0.5mm, and the height of the disc cavity formed after two packing ring superpositions is less than 1mm, after making fastening nut 2, extrude mutually between packing ring and porous patch, two packing rings produce deformation.The degree of depth of groove is the smaller the better in principle, stable for porous patch 6 can be fixed between two packing rings.When two packing rings be in there is not deformed state time, leave gap between the counterbore bottom surface of nut 2 and the upper-end surface in throttling chamber 5, screw in nut 2 to throttling chamber 5 and leave suitable remaining.
Piston pipeline 1 is installed in the counterbore in throttling chamber 5, and piston pipeline 1 adopts stainless steel to process, and adopts edge seal form with the first packing ring 3.In order to ensure when maximum pretightening force, inside diameter of gasket after deformation is not less than the internal diameter of piston pipeline 1 through hole and throttling chamber 5 through hole, namely prevent from the packing ring after deformation not to be pressed in piston pipeline 1 through hole and throttling chamber 5 through hole to result in blockage, the internal diameter extremely when young 3mm interior than the through hole of the first packing ring 3, second packing ring 4 of piston pipeline 1 through hole and throttling chamber 5 through hole; Nut 2 and throttling chamber 5 scyewed joint, by fastening nut 2, on the basis meeting piston pipeline 1 and the first packing ring 3, throttling chamber 5 and the second packing ring 4 sealing, utilize the screwing force of nut 2, make two packing ring generation deformation, the through hole internal diameter of packing ring reduces, and then changes the valid circulation area of porous patch 6 on throttling chamber 5, realizes the function of flow rate adjustment.
The through hole in throttling chamber 5 connects electric thruster propulsive mechanism device as suction port, the through hole of piston pipeline 1 connects the discharge chamber of electric thruster as air outlet, discharge chamber and outer space UNICOM, after electric thruster propulsive mechanism device provides certain pressure, due to through hole the other end near vacuum, under pressure difference effect, propellant agent flow to piston pipeline 1 one end from one end, throttling chamber 5 by porous patch 6, finally enters discharge chamber.By changing the valid circulation area of porous patch 6, i.e. adjustable propellant flow rate, provide the propellant agent flow rate needed for normal work eventually to electric thruster discharge chamber.
A kind of regulating method of electric thruster propellant agent flow rate adjustment Fluistor:
(1) through hole in throttling chamber 5 is connected electric thruster propulsive mechanism device, the through hole of piston pipeline 1 connects electric thruster, then regulate the pressure store of propulsive mechanism device, the propellant pressure value in the through hole of throttling chamber 5 is remained within the scope of the level pressure value of requirement.
(2) propellant agent flow rate in the through hole adopting propellant agent flow rate testing apparatus test throttling chamber 5 under the existing screwing force condition of nut 2.
(3) according to the propellant agent flow rate data of propellant agent flow rate testing apparatus, continuous fastening nut 2, control the deformation quantity of the first packing ring 3 and the second packing ring 4, until after deformation occurs the first packing ring 3 and the second packing ring 4, meet the normal job requirement of electric thruster by the propellant agent flow rate of porous patch 6 valid circulation area.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. an electric thruster propellant agent flow rate adjustment Fluistor, it is characterized in that, comprising: piston pipeline (1), nut (2), the first packing ring (3), the second packing ring (4), throttling chamber (5) and porous patch (6);
Described throttling chamber (5) is cylindrical-shaped structure, and its inside has the counterbore coaxial with the cylindrical body of throttling chamber (5), and counterbore base has with described counterbore UNICOM and the through hole coaxial with throttling chamber (5); Described through hole internal diameter is less than counterbore internal diameter; Throttling chamber (5) cylindrical is processed with outside thread;
Described piston pipeline (1) is made up of the upper cylinder integrally processed and lower cylinder, and the radius of lower cylinder is greater than cylindrical radius; Piston pipeline (1) inside is processed with the through hole coaxial with lower cylinder; The cylindrical of described lower cylinder coordinates with throttling chamber (5) counterbore inner circle;
Described nut (2) has the column structure of circular counter bore for one end, and the other end has through hole that is coaxial with this circular counter bore and that coordinate with the upper cylinder cylindrical of piston pipeline (1); The inwall of described circular counter bore is processed with the internal thread with the upper outside screw-thread fit of throttling chamber (5) cylindrical;
Described first packing ring (3) and the second packing ring (4) are the loop configuration body of fine silver material, cylindrical coordinates with throttling chamber (5) counterbore inwall, and internal diameter is greater than the internal diameter of throttling chamber (5) through hole and piston pipeline (1) through hole; The end face that first packing ring (3) is relative with the second packing ring (4) is all processed with circular groove, thus on the sidewall of the inner circle of loop configuration body forming station terrace;
The groove of described second packing ring (4) is upwards placed on throttling chamber (5) counterbore base, described porous patch (6) is placed on the second packing ring (4), the outer rim of porous patch (6) one end coordinates with the inner circle step surface of the second packing ring (4), the groove of the first packing ring (3) is placed on the second packing ring (4) downwards, and its inner circle step surface coordinates with the outer rim of porous patch (6) lower end; The lower cylinder of piston pipeline (1) is placed in the counterbore of throttling chamber (5); The upper cylinder of described piston pipeline (1) passes from the through hole of nut (2), in the counterbore screwing into nut (2) of described throttling chamber (5);
When described two packing rings are in and deformed state does not occur, between the counterbore bottom surface of nut (2) and the upper-end surface in described throttling chamber (5), leave gap.
2. a kind of electric thruster propellant agent flow rate adjustment Fluistor as claimed in claim 1, is characterized in that, the counterbore bottom surface of described throttling chamber (5) is processed with a circle tooth form protruding; The bottom surface of the lower cylinder of described piston pipeline (1) is processed with a circle tooth form projection.
3. a kind of electric thruster propellant agent flow rate adjustment Fluistor as claimed in claim 1, it is characterized in that, the internal diameter of described first packing ring (3) and the second packing ring (4) 3mm at least larger than the through hole internal diameter of described throttling chamber (5) through hole and piston pipeline (1).
4. a kind of electric thruster propellant agent flow rate adjustment Fluistor as claimed in claim 1, it is characterized in that, the depth of groove of described first packing ring (3) and the second packing ring (4) is less than 0.5mm.
5. a kind of electric thruster propellant agent flow rate adjustment Fluistor as claimed in claim 1, is characterized in that, described throttling chamber (5), piston pipeline (1) all adopt stainless steel material to process with nut (2).
6., based on a regulating method for Fluistor according to claim 1, comprise the steps:
(1), the through hole of throttling chamber (5) is connected electric thruster propulsive mechanism device, the through hole of piston pipeline (1) connects electric thruster, then regulate the pressure store of propulsive mechanism device, make propellant pressure value in the through hole of throttling chamber (5) remain within the scope of required pressure value;
(2) propellant agent flow rate in propellant agent flow rate testing apparatus test throttling chamber (5) through hole, is adopted;
(3), continuous fastening nut (2), control the deformation of the first packing ring (3) and the second packing ring (4), until porous patch (6) valid circulation area makes propellant agent flow rate in throttling chamber (5) through hole meet the normal job requirement of electric thruster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410452328.7A CN104295462B (en) | 2014-09-05 | 2014-09-05 | Choke for adjusting flow rate of electric thrustor propellant and adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410452328.7A CN104295462B (en) | 2014-09-05 | 2014-09-05 | Choke for adjusting flow rate of electric thrustor propellant and adjusting method |
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| Publication Number | Publication Date |
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| CN104295462A true CN104295462A (en) | 2015-01-21 |
| CN104295462B CN104295462B (en) | 2017-02-15 |
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| CN201410452328.7A Active CN104295462B (en) | 2014-09-05 | 2014-09-05 | Choke for adjusting flow rate of electric thrustor propellant and adjusting method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321388A (en) * | 2016-08-30 | 2017-01-11 | 兰州空间技术物理研究所 | Low-weight radiating shell used for ion thruster |
| CN106742073A (en) * | 2016-11-21 | 2017-05-31 | 北京控制工程研究所 | A kind of differential of the arc cathodic discharge micro electric propulsion die |
| TWI720112B (en) * | 2016-01-22 | 2021-03-01 | 美商波音公司 | Structural propellant for ion rockets (spir) |
| CN113217316A (en) * | 2021-05-14 | 2021-08-06 | 兰州空间技术物理研究所 | Thrust adjusting method based on Kaufman type ion thruster and satellite application |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2094896C1 (en) * | 1996-03-25 | 1997-10-27 | Научно-производственное предприятие "Новатех" | Fast neutral molecule source |
| JPH116473A (en) * | 1997-06-16 | 1999-01-12 | Ishikawajima Harima Heavy Ind Co Ltd | Dc arc thrustor |
| US6719011B2 (en) * | 2002-07-01 | 2004-04-13 | Bausch & Lomb Incorporated | Turbine fluid flow resistor |
| IL159248A (en) * | 2003-12-08 | 2011-10-31 | Aharon Oren | Thruster with electro-thermal thrust augmentation |
-
2014
- 2014-09-05 CN CN201410452328.7A patent/CN104295462B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI720112B (en) * | 2016-01-22 | 2021-03-01 | 美商波音公司 | Structural propellant for ion rockets (spir) |
| CN106321388A (en) * | 2016-08-30 | 2017-01-11 | 兰州空间技术物理研究所 | Low-weight radiating shell used for ion thruster |
| CN106742073A (en) * | 2016-11-21 | 2017-05-31 | 北京控制工程研究所 | A kind of differential of the arc cathodic discharge micro electric propulsion die |
| CN106742073B (en) * | 2016-11-21 | 2019-12-20 | 北京控制工程研究所 | Micro-arc cathode discharge micro electric propulsion module |
| CN113217316A (en) * | 2021-05-14 | 2021-08-06 | 兰州空间技术物理研究所 | Thrust adjusting method based on Kaufman type ion thruster and satellite application |
| CN113217316B (en) * | 2021-05-14 | 2022-09-30 | 兰州空间技术物理研究所 | Thrust adjusting method based on Kaufman type ion thruster and satellite application |
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