CN104295462B - 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
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- CN104295462B CN104295462B CN201410452328.7A CN201410452328A CN104295462B CN 104295462 B CN104295462 B CN 104295462B CN 201410452328 A CN201410452328 A CN 201410452328A CN 104295462 B CN104295462 B CN 104295462B
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- packing ring
- hole
- flow rate
- throttling chamber
- chamber
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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
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- Combustion & Propulsion (AREA)
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- Thermistors And Varistors (AREA)
- Motor Or Generator Cooling System (AREA)
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 flow rate adjustment Fluistor and control method, can be used for ion thrust
The electric thruster propellant flow rate adjustment occasion such as device, hall thruster, belongs to test and measuring field.
Background technology
Fluistor is the assembly of the electric thruster propellant flow rate adjustment most critical such as ion thruster, hall thruster.Literary composition
Offer " application on small flow rate flow controller for the porous metal material,《Powder metallurgy industry》Volume 17,2007 2 months, the 1st phase,
Page 34～page 37 ", describe application in the range of flow controller flow rate is for 1sccm～20sccm for the porous metal material.?
In application, using the mode of laser welding, porous patch is welded on throttling chamber, and by " welding flow rate is tested again
The mode of welding flow rate test again " successive ignition welding, changes valid circulation area on throttling chamber for the porous patch, and then
Realize flow rate adjustment function, finally meet the propellant flowrate demand of electric thruster normal work.
By the way of laser welding, porous patch was welded on throttling chamber to joining between porous patch and throttling chamber
Close required precision higher, be unfavorable for the processing of porous patch, lead to its difficulty of processing during compacting, sizing and wire cutting
Larger, solder yield is poor.Meanwhile, for porous metal material flow controller flow rate be the bigger model of 50sccm～200sccm
Application in enclosing and flow rate adjustment, the porosity due to porous patch increases with the increase of its design flow rate, if continuing to adopt
Laser welding mode, extremely easily produces small opening around weld seam, directly results in scrapping of throttling chamber.
Content of the invention
It is an object of the invention to provide a kind of electric thruster propellant flow rate adjustment Fluistor, change porous patch in throttling
Mounting means on chamber so that valid circulation area on throttling chamber for the porous patch manually, real-time, tunable.By this installation
Mode, can reduce the difficulty of processing of porous patch, improve qualification rate, expand porous metal material in electric thruster propellant stream
Range in rate regulatory function.
In order to solve above-mentioned technical problem, the present invention is realized in：
A kind of electric thruster propellant flow rate adjustment Fluistor, including：Piston pipeline (1), nut (2), the first packing ring
(3), second packing ring (4), throttling chamber (5) and porous patch (6)；
Described throttling chamber (5) is cylindrical-shaped structure, has the counterbore coaxial with the cylinder of the chamber that throttles (5) inside it, sinks
Bottom hole portion 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
It is machined with external screw thread on chamber (5) is cylindrical；
Described piston pipeline (1) is made up of the upper cylinder being integrally machined and lower cylinder, and the radius of lower cylinder is more than upper cylinder
Radius；It is machined with the through hole coaxial with lower cylinder inside piston pipeline (1)；Cylindrical and throttling chamber (5) counterbore of described lower cylinder
Inner circle coordinates；
Described nut (2) has the column structure of circular counter bore for one end, the other end have coaxial with this circular counter bore and
Through hole with the upper cylindrical cooperation of cylinder of piston pipeline (1)；The inwall of described circular counter bore is machined with and the chamber that throttles (5) are cylindrical outer
The internal thread of screw thread cooperation；
Described first packing ring (3) and second packing ring (4) are the loop configuration body of fine silver material, cylindrical with throttling chamber (5)
Counterbore inwall coordinates, and internal diameter is more than the internal diameter of throttling chamber (5) through hole and piston pipeline (1) through hole；First packing ring (3) and the second pad
The relative end face of circle (4) is all machined with the groove of circle, thus forming step surface on the side wall of the inner circle of loop configuration body；
The groove of described second packing ring (4) is placed on throttling chamber (5) counterbore base upwards, and described porous patch (6) is placed in
On second packing ring (4), the outer rim of porous patch (6) one end is coordinated with the inner circle step surface of second packing ring (4), the first packing ring
(3) groove is placed in downwards on second packing ring (4), and its inner circle step surface is coordinated with the outer rim of porous patch (6) lower end；Piston
The lower cylinder of pipeline (1) is placed in the counterbore of throttling chamber (5)；The upper cylinder of described piston pipeline (1) is worn from the through hole of nut (2)
Go out, in the counterbore screwing into nut (2) of described throttling chamber (5)；
Described two packing rings are in when not deforming upon state, and the counterbore bottom surface of nut (2) is upper with described throttling chamber (5)
Gap is left between end face.
One circle tooth form is machined with the counterbore bottom surface of described throttling chamber (5) raised；The lower cylinder of described piston pipeline (1)
It is raised that bottom surface is machined with a circle tooth form.
The internal diameter of described first packing ring (3) and second packing ring (4) is than described throttling chamber (5) through hole and piston pipeline (1)
At least big 3mm of through hole internal diameter.
The depth of groove of described first packing ring (3) and second packing ring (4) is less than 0.5mm.
Described throttling chamber (5), piston pipeline (1) and nut (2) are all processed using stainless steel material.
A kind of control method based on above-mentioned Fluistor, comprises the steps：
(1) through hole in chamber (5) of, throttling connects electric thruster propulsive mechanism device, and the through hole of piston pipeline (1) is connected
Electric thruster, then adjusts the pressure store of propulsive mechanism device, so that propellant pressure value in the through hole of throttling chamber (5) is kept
In the range of required pressure value；
(2), adopt propellant flow rate in propellant flow rate test device test throttling chamber (5) through hole；
(3), constantly tighten nut (2), control the deformation of the first packing ring (3) and second packing ring (4), until porous patch
(6) valid circulation area makes propellant flow rate in throttling chamber (5) through hole meet the requirement of electric thruster normal work.
The present invention has the advantages that：
(1) Fluistor of the present invention reduces the difficulty of processing of porous patch, be conducive to porous patch compacting, sizing and
Process debugging during wire cutting etc.；
(2) Fluistor of the present invention decreases process in propellant flow rate test process for the porous patch, permissible
So that the propellant flow rate test of porous patch is settled at one go, shorten the lead time of flow controller；
(3) Fluistor of the present invention expands application in flow controller flow rate adjustment for the porous metal material and adjusts model
Enclose so that the porous patch that porous metal material is made can apply electric thruster product and the satellite platform of more polytypic.
Brief description
Fig. 1 is the structural representation of electric thruster propellant 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.
Specific embodiment
Develop simultaneously embodiment below in conjunction with the accompanying drawings, describes the present invention.
The electric thruster propellant flow rate adjustment Fluistor of the present invention, including piston pipeline 1, nut 2, the first packing ring 3,
Two packing rings 4, throttling chamber 5 and porous patch 6；Throttling chamber 5 is cylindrical-shaped structure, and chamber 5 cylinder that has inside it and throttle is same
The counterbore of axle, counterbore base has and the coaxial through hole of chamber 5 cylinder that throttles；Through hole internal diameter is less than counterbore internal diameter；Outside throttling chamber 5
Nose circle is machined with external screw thread on face；
Piston pipeline 1 is made up of the upper cylinder being integrally machined and lower cylinder, and the radius of lower cylinder is more than upper cylindrical radius；Live
It is machined with the through hole coaxial with lower cylinder inside plug pipeline 1；The cylindrical and throttling chamber 5 counterbore inner circle cooperation of lower cylinder；
Nut 2 has the column structure of circular counter bore for one end, and the other end has and and piston coaxial with this circular counter bore
The through hole of the cylindrical cooperation of cylinder on pipeline 1；The interior spiral shell that the inner wall end surface of circular counter bore is machined with and chamber 5 external screw thread that throttles coordinates
Line；
First packing ring 3 and second packing ring 4 are the loop configuration body of fine silver material, in the cylindrical counterbore with throttling chamber 5 of packing ring
Wall coordinates, and its internal diameter is more than the internal diameter of throttling chamber 5 through hole and piston pipeline 1 through hole；First packing ring 3 is relative with second packing ring 4
End face is all machined with the groove of circle, thus forming step surface on the inner circle side wall of loop configuration body；
The groove of second packing ring 4 is placed in throttling chamber 5 counterbore base upwards, and porous patch 6 is placed on second packing ring 4, many
The end face of stopple piece 6 one end is coordinated with the inner circle step surface of second packing ring 4, and the groove of the first packing ring 3 is placed in downwards porous patch 6
On, the cooperation of the end face of its inner circle step surface and porous patch 6 other end；The lower cylinder of piston pipeline 1 is placed in throttling chamber 5
In counterbore；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 do not deform upon state, between the upper surface in the counterbore bottom surface of nut 2 and described throttling chamber 5
Leave gap.
The operation principle of the electric thruster propellant flow rate adjustment Fluistor of the present invention is as follows：
Second packing ring 4 is placed in the bottom of throttling chamber 5 counterbore, and throttling chamber 5 adopts edge seal with second packing ring 4, the second pad
Circle 4 adopts fine silver material, and end surface processes groove, and the internal diameter of groove is consistent with the external diameter of porous patch 6, installation further groove to
On, throttling chamber 5 is processed with stainless steel, the through hole internal diameter 3mm at least bigger than the through hole internal diameter in throttling chamber 5 of second packing ring 4；Porous plug
Piece 6 embeds in the groove of second packing ring 4；Material and version first packing ring 3 consistent with second packing ring 4 are inverted in throttling chamber
In 5, and guarantee in the groove that porous patch 6 embeds the first packing ring 3.Thickness due to porous patch 6 is generally 1mm, the first pad
The depth of groove of circle 3 and second packing ring 4 is both needed to less than 0.5mm, and the height of the disc cavity being formed after two packing ring superpositions is less than
After 1mm is so that tighten nut 2, extrude mutually between packing ring and porous patch, two packing rings produce deformation.The depth of principle upper groove
Degree is the smaller the better, and porous patch 6 can be stably fixed between two packing rings.Do not deform upon shape when two packing rings are in
During state, between the upper surface in the counterbore bottom surface of nut 2 and throttling chamber 5, leave gap, screw in nut 2 to throttling chamber 5 and leave
Suitably remaining.
Piston pipeline 1 be installed to throttling chamber 5 counterbore in, piston pipeline 1 adopt stainless steel process, and with the first packing ring 3
Using edge seal form.In order to ensure, in the case of maximum pretightning force, the inside diameter of gasket after deformation is not less than piston pipeline 1
Through hole and the internal diameter of throttling chamber 5 through hole, that is, prevent the packing ring after deformation not to be pressed into piston pipeline 1 through hole and throttling chamber 5
Result in blockage in through hole, the internal diameter of piston pipeline 1 through hole and throttling chamber 5 through hole is than in the first packing ring 3, the through hole of second packing ring 4
To when young 3mm；Nut 2 and throttling chamber 5 thread connection, by tightening nut 2, are meeting piston pipeline 1 and the first packing ring 3, section
On the basis of stream chamber 5 and second packing ring 4 sealing, using nut 2 screwing force so that two packing rings deform upon, packing ring logical
In the hole footpath reduces, and then changes valid circulation area on throttling chamber 5 for the porous patch 6, realizes the function of flow rate adjustment.
The through hole in throttling chamber 5 connects electric thruster propulsive mechanism device, the through hole conduct of piston pipeline 1 as air inlet
Gas outlet meets the arc chamber of electric thruster, arc chamber and outer space UNICOM, when electric thruster propulsive mechanism device provides necessarily
Pressure after, due to through hole other end near vacuum, under pressure differential effect, propellant passes through porous plug from throttling chamber 5 one end
Piece 6 flow to piston pipeline 1 one end, finally enters arc chamber.By changing the valid circulation area of porous patch 6, you can adjust
Propellant flow rate, finally provides the propellant flow rate needed for normal work to electric thruster arc chamber.
A kind of control method of electric thruster propellant 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 is connected electricity and pushed away
Power device, then adjusts the pressure store of propulsive mechanism device, so that the propellant pressure value in the through hole of throttling chamber 5 is remained at
In the range of the level pressure value requiring.
(2) pushed away in the through hole in throttling chamber 5 under the conditions of the existing screwing force of nut 2 using the test of propellant flow rate test device
Enter agent flow rate.
(3) the propellant flow rate data according to propellant flow rate test device, constantly tightens nut 2, controls the first packing ring 3
With the deformation quantity of second packing ring 4, after deforming upon up to the first packing ring 3 and second packing ring 4, effectively circulated by porous patch 6
The propellant flow rate of area meets electric thruster normal work and requires.
In sum, these are only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.
All any modification, equivalent substitution and improvement within the spirit and principles in the present invention, made etc., should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of electric thruster propellant flow rate adjustment Fluistor is it is characterised in that include：Piston pipeline (1), nut (2),
One packing ring (3), second packing ring (4), throttling chamber (5) and porous patch (6)；
Described throttling chamber (5) is cylindrical-shaped structure, has the counterbore coaxial with the cylinder of the chamber that throttles (5), counterbore bottom inside it
Portion 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) it is machined with external screw thread on cylindrical；
Described piston pipeline (1) is made up of the upper cylinder being integrally machined and lower cylinder, and the radius of lower cylinder is more than upper cylindrical radius；
It is machined with the through hole coaxial with lower cylinder inside piston pipeline (1)；Cylindrical and throttling chamber (5) the counterbore inner circle of described lower cylinder is joined
Close；
Described nut (2) has the column structure of circular counter bore for one end, the other end have coaxial with this circular counter bore and with work
The through hole of the upper cylindrical cooperation of cylinder of plug pipeline (1)；The inwall of described circular counter bore is machined with and the chamber that throttles (5) cylindrical upper external screw thread
The internal thread of cooperation；
Described first packing ring (3) and second packing ring (4) are the loop configuration body of fine silver material, cylindrical with throttling chamber (5) counterbore
Inwall coordinates, and internal diameter is more than the internal diameter of throttling chamber (5) through hole and piston pipeline (1) through hole；First packing ring (3) and second packing ring
(4) relative end face is all machined with the groove of circle, thus forming step surface on the side wall of the inner circle of loop configuration body；
The groove of described second packing ring (4) is placed on throttling chamber (5) counterbore base upwards, and described porous patch (6) is placed in second
On packing ring (4), the outer rim of porous patch (6) one end is coordinated with the inner circle step surface of second packing ring (4), the first packing ring (3)
Groove is placed in downwards on second packing ring (4), and its inner circle step surface is coordinated with the outer rim of porous patch (6) lower end；Piston pipeline
(1) lower cylinder 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)；
Described first packing ring (3) and second packing ring (4) are in when not deforming upon state, the counterbore bottom surface of nut (2) with described
Gap is left between the upper surface of throttling chamber (5).
2. as claimed in claim 1 a kind of electric thruster propellant flow rate adjustment Fluistor it is characterised in that described throttling chamber
(5) a circle tooth form is machined with counterbore bottom surface raised；The bottom surface of the lower cylinder of described piston pipeline (1) is machined with a circle tooth
Type is raised.
3. as claimed in claim 1 a kind of electric thruster propellant flow rate adjustment Fluistor it is characterised in that described first pad
Circle (3) and the internal diameter 3mm at least bigger than the through hole internal diameter of described throttling chamber (5) through hole and piston pipeline (1) of second packing ring (4).
4. as claimed in claim 1 a kind of electric thruster propellant flow rate adjustment Fluistor it is characterised in that described first pad
The depth of groove of circle (3) and second packing ring (4) is less than 0.5mm.
5. as claimed in claim 1 a kind of electric thruster propellant flow rate adjustment Fluistor it is characterised in that described throttling chamber
(5), piston pipeline (1) and nut (2) are all processed using stainless steel material.
6. a kind of control method based on the Fluistor described in claim 1, comprises the steps：
(1) through hole in chamber (5) of, throttling connects electric thruster propulsive mechanism device, and the through hole of piston pipeline (1) is connected electricity and pushed away
Power device, then adjusts the pressure store of propulsive mechanism device, and so that propellant pressure value in the through hole of throttling chamber (5) is maintained at will
In the range of pressure values asked；
(2), adopt propellant flow rate in propellant flow rate test device test throttling chamber (5) through hole；
(3), constantly tighten nut (2), control the deformation of the first packing ring (3) and second packing ring (4), until porous patch (6) has
Effect circulation area makes propellant flow rate in throttling chamber (5) through hole meet the requirement of electric thruster normal work.
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 CN104295462A (en) | 2015-01-21 |
| CN104295462B true CN104295462B (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10428806B2 (en) * | 2016-01-22 | 2019-10-01 | The Boeing Company | 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 |
| 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 |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997036463A1 (en) * | 1996-03-25 | 1997-10-02 | Nauchno-Proizvodstvennoe Predpriyatie 'novatech' | Source of fast neutral molecules |
| JPH116473A (en) * | 1997-06-16 | 1999-01-12 | Ishikawajima Harima Heavy Ind Co Ltd | Dc arc thrustor |
| WO2005054674A3 (en) * | 2003-12-08 | 2005-08-04 | Rafael Armament Dev Authority | Thruster with electro-thermal thrust augmentation |
| CN1665464A (en) * | 2002-07-01 | 2005-09-07 | 博士伦公司 | Turbine fluid flow resistor |
-
2014
- 2014-09-05 CN CN201410452328.7A patent/CN104295462B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997036463A1 (en) * | 1996-03-25 | 1997-10-02 | Nauchno-Proizvodstvennoe Predpriyatie 'novatech' | Source of fast neutral molecules |
| JPH116473A (en) * | 1997-06-16 | 1999-01-12 | Ishikawajima Harima Heavy Ind Co Ltd | Dc arc thrustor |
| CN1665464A (en) * | 2002-07-01 | 2005-09-07 | 博士伦公司 | Turbine fluid flow resistor |
| WO2005054674A3 (en) * | 2003-12-08 | 2005-08-04 | Rafael Armament Dev Authority | Thruster with electro-thermal thrust augmentation |
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| CN104295462A (en) | 2015-01-21 |
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