CN105423001B - A kind of capillary applied to single group member thruster - Google Patents
A kind of capillary applied to single group member thruster Download PDFInfo
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- CN105423001B CN105423001B CN201510849328.5A CN201510849328A CN105423001B CN 105423001 B CN105423001 B CN 105423001B CN 201510849328 A CN201510849328 A CN 201510849328A CN 105423001 B CN105423001 B CN 105423001B
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- arc section
- straight length
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
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Abstract
The present invention relates to a kind of capillary applied to single group member thruster, belong to single group member thruster technical field, the capillary external diameter is 0.2mm~0.7mm, and wall thickness is 0.05mm~0.3mm.The capillary includes left straight length, the first arc section, the second arc section, left transition straight length, three-arc section, right transition straight length, the 4th arc section, the 5th arc section and right straight length., can be by selecting capillary total length before bending accurately to control the flow resistance of single group member thruster, so as to accurately control the thrust of single group member thruster using the capillary of the present invention；Using the present invention, the structural stress for bending postcapillary is small, can adapt to the larger environment of difference variation；Using capillary of the present invention, the thermal resistance of capillary is increased, hot-end component improves the job security of single group member thruster toward the heat conduction amount of upstream when reducing the igniting of single group member thruster.
Description
Technical field
Single group member thrust is applied to the present invention relates to a kind of capillary applied to single group member thruster, more particularly to one kind
360 ° of ultra-fine capillaries of device, belong to single group member thruster technical field, and the capillary external diameter is 0.2mm~0.7mm, wall thickness
For 0.05mm~0.3mm.
Background technology
Single group member thruster is one of main power unit of current spacecraft rail control, and application is quite varied.With
The development trend of lifting and itself microminaturization of Spacecraft Control required precision, it is desirable to which single group member thruster realizes microminiature
Change, thrust magnitude is even below 200mN.The member that single group member thruster is generally conveyed using capillary as flow and pressure drop is controlled
Part, the circulation passage that functions as flow of the capillary in thruster conveys propellant from upstream to combustion chamber, while simultaneous
Flow transfer passage and pressure drop control unit are done, is typically mounted in the less framework of internal diameter size that (axially mounted space is usual
Only 20mm).
When single group member thruster thrust magnitude is 200mN, if using existing capillary, had the disadvantage that：
(1) capillary inner diameter very little, processing and manufacturing error is very big, it is difficult to meets accurate control and requires；
(2) because capillary pipe length and frame size deviation are very big, it is difficult to match.
The content of the invention
The technology of the present invention solves problem：Overcome the deficiencies in the prior art, propose a kind of applied to unit thruster
Ultra-fine capillary and its forming method.
The present invention technical solution be：
A kind of capillary applied to single group member thruster, the capillary is formed by a straight tube bending, the capillary bag
Include left straight length, the first arc section, the second arc section, left transition straight length, three-arc section, right transition straight length, the 4th circle
Segmental arc, the 5th arc section and right straight length；
Left straight length, the first arc section, the second arc section, left transition straight length, three-arc section, right transition straight length,
4th arc section, the 5th arc section and right straight length are linked in sequence and seamlessly transitted successively；
The origin of coordinates is in midpoint using left straight length and right straightway interval, and direction where defining left straight length is x-axis, just
Direction is to the right；Y-axis positive direction is upward；Z-axis is determined according to left hand rule；
Left straight length be located at-x-axis on；First arc section is located on (- x+y) face；Second arc section is located at (- x+z) face
On；Left transition straight length is parallel with y, and on (+y+z) face；Three-arc section one end is located on (+y+z) face, other end position
In on (+y-z) face；Right transition straight length is parallel with y, and on (+y-z) face；4th arc section is located on (- x-z) face；The
Five arc sections are located on (+x+y) face；Right straight length be located at+x-axis on.
Described capillary outside dimension is 0.2mm~0.7mm, and wall thickness is 0.05mm~0.3mm.
Described left straight length and the first arc section is tangent, and the first arc section and the second arc section are tangent, the second arc section
Tangent with left transition straight length, left transition straight length and three-arc section are tangent, and three-arc section is tangent with right transition straight length,
Right transition straight length and the 4th arc section are tangent, and the 4th arc section and the 5th arc section are tangent, the 5th arc section and right straight length
It is tangent.
Left straight length and right straight length are conllinear, and vertical with left transition straight length, three-arc section, right transition straight length,
Left straight length and right flow development length are a.
First arc section, the second arc section, the 4th arc section and the 5th arc section are 1/4 circular arc, and its radius is r.
Left transition straight length and right transition flow development length are r.
Three-arc section radius is 2r, is semi arch.
Overall length is S=2a+ (4 π+2) r, capillary pipe length L=2a+2r after bending before capillary bending, and S is according to stream
Resistance is required and capillary inner diameter is determined, L is determined according to single group member thruster frame size, and according to S and L, solution obtains capillary
Geomery,
The present invention having the beneficial effect that compared with prior art：
(1) using the capillary of the present invention, capillary can be increased as far as possible while frame size requirement is met
Internal diameter size, reduction difficulty of processing and foozle；
(2), can be by selecting capillary total length before bending accurately to control single group member using the capillary of the present invention
The flow resistance of thruster, so as to accurately control the thrust of single group member thruster；
(3) using the present invention, the length of bending postcapillary can be finely adjusted, and can adapt to the deviation of frame size,
Meet the matching performance of capillary pipe length and frame size；
(4) using the present invention, the structural stress for bending postcapillary is small, can adapt to the larger environment of difference variation；
(5) capillary of the present invention is used, the thermal resistance of capillary is increased, hot junction portion when reducing the igniting of single group member thruster
Part improves the job security of single group member thruster toward the heat conduction amount of upstream.
Brief description of the drawings
Fig. 1 is 360 ° of ultra-fine capillary dimensional structure diagrams；
Fig. 2 is 360 ° of ultra-fine capillary pipe structure schematic diagrames.
Embodiment
A kind of capillary applied to single group member thruster, the capillary is formed by 360 ° of a straight tube bending, including a left side
Straight length 1, the first arc section 2, the second arc section 3, left transition straight length 4, three-arc section 5, right transition straight length the 6, the 4th
Arc section 7, the 5th arc section 8 and right straight length 9；
Left straight length 1, the first arc section 2, the second arc section 3, left transition straight length 4, three-arc section 5, right transition are straight
Pipeline section 6, the 4th arc section 7, the 5th arc section 8 and right straight length 9 are linked in sequence and seamlessly transitted successively, and caliber and wall thickness are complete
It is complete consistent；
The capillary outside dimension is 0.2mm~0.7mm, and wall thickness is 0.05mm~0.3mm；
Overall length is S=2a+ (4 π+2) r, capillary pipe length L=2a+2r after bending, according to flow resistance before capillary bending
It is required that determining S sizes with capillary inner diameter, L dimension is determined according to single group member thruster frame size；
According to S and L dimension, solution obtains capillary form size a and r,
Left straight length 1 and right straight length 9 are conllinear, and with left transition straight length 4, three-arc section 5, right transition straight length 6
Vertically, left straight length 1 and right straight length 9 length is a；
Left straight length 1 and the first arc section 2 are tangent, and the first arc section 2 and the second arc section 3 are tangent, the second arc section 3 with
Left transition straight length 4 is tangent, and left transition straight length 4 and three-arc section 5 are tangent, three-arc section 5 and the right phase of transition straight length 6
Cut, right transition straight length 6 and the 4th arc section 7 are tangent, and the 4th arc section 7 and the 5th arc section 8 are tangent, the 5th arc section 8 with
Right straight length 9 is tangent；
First arc section 2, the second arc section 3, the 4th arc section 7 and the radius of the 5th arc section 8 are r, are 1/4 circle
Arc；
Left transition straight length 4 and the right length of transition straight length 6 are r；
Three-arc 5 radiuses of section are 2r, are semi arch；
The origin of coordinates is in midpoint using left straight length 1 and the interval of right straightway 9, and it is x to define the left place direction of straight length 1
Axle, positive direction is to the right；Y-axis positive direction is upward；Z-axis is determined according to left hand rule；
Left straight length 1 be located at-x-axis on；First arc section 2 is located on (- x+y) face；Second arc section 3 is located at (- x+z)
On face；Left transition straight length 4 is parallel with y, and on (+y+z) face；5 one end of three-arc section are located on (+y+z) face, another
End is located on (+y-z) face；Right transition straight length 6 is parallel with y, and on (+y-z) face；4th arc section 7 is located at (- x-z)
On face；5th arc section 8 is located on (+x+y) face；Right straight length 9 be located at+x-axis on.
The embodiment to the present invention is further described in detail below in conjunction with the accompanying drawings.
Embodiment
According to flow resistance requirement and single group member thruster frame size, S=45.12mm, L=20mm are determined；According to S and L chis
Very little, solution obtains capillary form size a=8mm and r=2mm.
As shown in figure 1, a kind of ultra-fine capillary applied to single group member thruster, the capillary is by a straight tube (overall length
45.12mm) bending, which is formed, includes left straight length 1, the first arc section 2, the second arc section 3, left transition straight length 4, three-arc
Section 5, right transition straight length 6, the 4th arc section 7, the 5th arc section 8 and right straight length 9；
As shown in figure 1, left straight length 1, the first arc section 2, the second arc section 3, left transition straight length 4, three-arc section
5th, right transition straight length 6, the 4th arc section 7, the 5th arc section 8 and right straight length 9 are linked in sequence and seamlessly transitted successively, and pipe
Footpath is completely the same with wall thickness；
As shown in figure 1, the capillary outside dimension is 0.14mm, wall thickness is 0.23mm；
As shown in Fig. 2 left straight length 1 and right straight length 9 are conllinear, and with left transition straight length 4, three-arc section 5, right mistake
Cross straight length 6 vertical, left straight length 1 and right straight length 9 length is 8mm；
As shown in Fig. 2 left straight length 1 and the first arc section 2 are tangent, the first arc section 2 and the second arc section 3 are tangent, the
Two arc sections 3 and left transition straight length 4 are tangent, and left transition straight length 4 and three-arc section 5 are tangent, three-arc section 5 and right mistake
Cross straight length 6 tangent, right transition straight length 6 and the 4th arc section 7 are tangent, and the 4th arc section 7 and the 5th arc section 8 are tangent, the
Five arc sections 8 and right straight length 9 are tangent；
As shown in Fig. 2 the first arc section 2, the second arc section 3, the 4th arc section 7 and the radius of the 5th arc section 8 are
2mm, is 1/4 circular arc；
As shown in Fig. 2 left transition straight length 4 and the right length of transition straight length 6 are 2mm；
As shown in Fig. 2 three-arc 5 radiuses of section are 4mm, it is semi arch；
As shown in figure 1, using the midpoint at left straight length 1 and the interval of right straightway 9 as the origin of coordinates, defining the left institute of straight length 1
It is x-axis in direction, positive direction is to the right；Y-axis positive direction is upward；Z-axis is determined according to left hand rule；
As shown in figure 1, left straight length 1 be located at-x-axis on；First arc section 2 is located on (- x+y) face；Second arc section 3
On (- x+z) face；Left transition straight length 4 is parallel with y, and on (+y+z) face；5 one end of three-arc section are located at (+y+
Z) on face, the other end is located on (+y-z) face；Right transition straight length 6 is parallel with y, and on (+y-z) face；4th arc section 7
On (- x-z) face；5th arc section 8 is located on (+x+y) face；Right straight length 9 be located at+x-axis on.
Claims (8)
1. a kind of capillary applied to single group member thruster, it is characterised in that：The capillary is formed by a straight tube bending, should
Capillary includes left straight length (1), the first arc section (2), the second arc section (3), left transition straight length (4), three-arc section
(5), right transition straight length (6), the 4th arc section (7), the 5th arc section (8) and right straight length (9)；
Left straight length (1), the first arc section (2), the second arc section (3), left transition straight length (4), three-arc section (5), the right side
Transition straight length (6), the 4th arc section (7), the 5th arc section (8) and right straight length (9) are linked in sequence and seamlessly transitted successively；
The origin of coordinates is in midpoint using left straight length (1) and right straightway (9) interval, and direction where defining left straight length (1) is x
Axle, positive direction is to the right；Y-axis positive direction is upward；Z-axis is determined according to left hand rule；
Left straight length (1) be located at-x-axis on；First arc section (2) is located on-x+y faces；Second arc section (3) is located at-x+z faces
On；Left transition straight length (4) is parallel with y, and on+y+z faces；Three-arc section (5) one end is located on+y+z faces, the other end
On+y-z plane；Right transition straight length (6) is parallel with y, and on+y-z plane；4th arc section (7) is located on-x-z faces；
5th arc section (8) is located on+x+y faces；Right straight length (9) be located at+x-axis on.
2. a kind of capillary applied to single group member thruster according to claim 1, it is characterised in that：Described capillary
Pipe outside dimension is 0.2mm~0.7mm, and wall thickness is 0.05mm~0.3mm.
3. a kind of capillary applied to single group member thruster according to claim 1, it is characterised in that：A described left side is straight
Pipeline section (1) and the first arc section (2) are tangent, and the first arc section (2) and the second arc section (3) are tangent, the second arc section (3) and a left side
Transition straight length (4) is tangent, and left transition straight length (4) and three-arc section (5) are tangent, and three-arc section (5) and right transition are straight
Pipeline section (6) is tangent, and right transition straight length (6) and the 4th arc section (7) are tangent, the 4th arc section (7) and the 5th arc section (8) phase
Cut, the 5th arc section (8) and right straight length (9) are tangent.
4. a kind of capillary applied to single group member thruster according to claim 1, it is characterised in that：Left straight length
(1) and right straight length (9) collinearly, it is and vertical with left transition straight length (4), three-arc section (5), right transition straight length (6),
Left straight length (1) and right straight length (9) length are a.
5. a kind of capillary applied to single group member thruster according to claim 1, it is characterised in that：First arc section
(2), the second arc section (3), the 4th arc section (7) and the 5th arc section (8) are 1/4 circular arc, and its radius is r.
6. a kind of capillary applied to single group member thruster according to claim 1, it is characterised in that：Left transition straight tube
Section (4) and right transition straight length (6) length is r.
7. a kind of capillary applied to single group member thruster according to claim any one of 1-6, it is characterised in that：The
Three-arc section (5) radius is 2r, is semi arch.
8. a kind of capillary applied to single group member thruster according to claim 7, it is characterised in that：Capillary is bent
Overall length is S=2a+ (4 π+2) r, capillary pipe length L=2a+2r after bending, S according to flow resistance requirement and capillary inner diameter before
It is determined that, L is determined according to single group member thruster frame size, according to S and L, and solution obtains capillary form size,
。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510849328.5A CN105423001B (en) | 2015-11-27 | 2015-11-27 | A kind of capillary applied to single group member thruster |
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| CN201510849328.5A CN105423001B (en) | 2015-11-27 | 2015-11-27 | A kind of capillary applied to single group member thruster |
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| CN105423001A CN105423001A (en) | 2016-03-23 |
| CN105423001B true CN105423001B (en) | 2017-07-28 |
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| CN105927423B (en) * | 2016-04-20 | 2017-08-29 | 北京控制工程研究所 | A kind of spray structure and its assembly method for single group member catalytic decomposition thruster |
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| JPH03265780A (en) * | 1990-03-15 | 1991-11-26 | Tlv Co Ltd | Fluid transfer device |
| US6892525B2 (en) * | 2003-06-06 | 2005-05-17 | Honeywell International Inc. | Micropump-based microthruster |
| CN101858374B (en) * | 2010-05-21 | 2011-11-09 | 北京理工大学 | Design method of serial-connection laminar flow capillary |
| JP6008713B2 (en) * | 2012-11-28 | 2016-10-19 | 三菱重工業株式会社 | Orbit attitude control device, orbit attitude control method |
| CN104089112B (en) * | 2014-06-27 | 2016-08-24 | 北京控制工程研究所 | A kind of electric propulsion system thrust vectoring governor motion flexible conduit |
| CN104828262B (en) * | 2015-04-30 | 2017-05-03 | 北京控制工程研究所 | Low-pressure liquefied gas thrust generating method for spacecraft |
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