CN106050474B - A kind of new Joining Structure in rocket motor chain-drive section and re-generatively cooled body portion - Google Patents
A kind of new Joining Structure in rocket motor chain-drive section and re-generatively cooled body portion Download PDFInfo
- Publication number
- CN106050474B CN106050474B CN201610345885.8A CN201610345885A CN106050474B CN 106050474 B CN106050474 B CN 106050474B CN 201610345885 A CN201610345885 A CN 201610345885A CN 106050474 B CN106050474 B CN 106050474B
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- China
- Prior art keywords
- body portion
- cooled body
- generatively cooled
- head
- connection ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/60—Constructional parts; Details not otherwise provided for
- F02K9/62—Combustion or thrust chambers
- F02K9/64—Combustion or thrust chambers having cooling arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
- F02K9/54—Leakage detectors; Purging systems; Filtration systems
Abstract
The invention discloses a kind of rocket motor chain-drive section and the new Joining Structure in re-generatively cooled body portion, including head, re-generatively cooled body portion, connection ring and screen pack, head spray panel direction is provided with mounting groove, for positioning the combustion section in re-generatively cooled body portion, first weld seam is set on the outside of the head, the big end of ring is welded to connect for high energy beam current；The re-generatively cooled body portion combustion section inner wall outside sets the second weld seam, for high energy beam current welded header；The re-generatively cooled body portion outer exterior wall sets the 3rd weld seam, for argon arc welding connection ring small end；The screen pack is fixed on the inside of connection ring by filter skeleton spot welding；Some unthreaded holes have been evenly arranged on the filter skeleton.Weld seam bar number of the present invention is few, non-overlapping weld seam, and attachment structure reliability is high；Numerical control welding is easy to implement, weld penetration uniformity is good；By the setting of coolant filtration net, the anti-fifth wheel pollution capacity of engine is improved, and engine presentation quality is good, expansion is strong.
Description
Technical field
The present invention relates to spacecraft propulsion system technical field, specifically a kind of rocket motor chain-drive section and re-generatively cooled body
The new Joining Structure in portion.
Background technology
Engine is the heart of the spacecrafts such as carrier rocket, satellite, and becoming rail posture adjustment for spacecraft provides power.In engine
Portion's ignition temperature is up to 3000 DEG C, far above the use temperature upper limit of engine material, it is therefore necessary to considers engine cool problem.
For high thrust motor, generally use re-generatively cooled method realizes engine long time steady operation, and this engine is referred to as
Re-generatively cooled engine.
The thrust chamber of re-generatively cooled engine generally comprises head and re-generatively cooled body portion, the metal material of generally use,
Such as stainless steel, nickel, copper-silver-zircaloy or nickel-base heat resisting superalloy.Propellant for re-generatively cooled is typically by re-generatively cooled body
Portion's nozzle end flows into, and flows through the cooling jacket in re-generatively cooled body portion wall, and is flowed out from re-generatively cooled body portion combustion section, then
Engine ejector filler is flowed into by head and re-generatively cooled body portion junction.
Engine head is connected with re-generatively cooled body portion generally use welding structure, and its attachment structure includes connecting in head body
Connected with outside head body, be connected to isolate high-temperature fuel gas and re-generatively cooled propellant in head body, isolation is connected to outside head body again
Raw and cold but propellant and use environment.
Make a general survey of technology status at home and abroad, the connected mode in engine head and re-generatively cooled body portion is varied, it may have
Many successful cases, but generally there is following deficiency：
1) complicated, production and processing difficulty is big；
2) weld seam is densely distributed, weld seam secondary welding be present；
3) use manual argon arc welding, weld penetration is difficult to ensure that more；
4) outward appearance is poor.
The content of the invention
For solution above-mentioned technical problem, the invention provides a kind of rocket motor chain-drive section and re-generatively cooled body portion
New Joining Structure, realize engine head and be reliably connected with re-generatively cooled body portion, while cause cooling agent can be by raw and cold again
But body portion flows into head.
The purpose of the present invention is achieved through the following technical solutions：A kind of rocket motor chain-drive section and re-generatively cooled body portion
New Joining Structure, including head, re-generatively cooled body portion, connection ring and screen pack, head spray panel direction are provided with installation
Groove, for positioning the combustion section in re-generatively cooled body portion, the first weld seam is set on the outside of the head, welds and connects for high energy beam current
Connect the big end of ring；The re-generatively cooled body portion combustion section inner wall outside sets the second weld seam, for high energy beam current welded header, structure
Connected in into head body；The re-generatively cooled body portion outer exterior wall sets the 3rd weld seam, for argon arc welding connection ring small end；It is described
Screen pack is fixed on the inside of connection ring by filter skeleton spot welding, lifts the anti-fifth wheel pollution capacity of engine；The filtering
Some unthreaded holes have been evenly arranged on device skeleton, cooling agent is flowed into head by re-generatively cooled body portion.
Preferably, the thickness of the connection ring is 2mm, big to hold internal diameter Φ 140mm (tolerance 0.05mm~0.1mm), small end
Internal diameter is Φ 120mm (tolerance 0.05mm~0.2mm), overall length 30mm.
Preferably, the thickness of the filter skeleton is 2mm, vertical with the hypotenuse among connection ring, is evenly arranged 24
Φ 3 unthreaded hole, the lower edge size of filter skeleton is Φ 120mm (tolerance 0.05mm~0.2mm).
Preferably, screen pack spot welding is fixed on the small side of filter skeleton, and screen pack precision is 400 μm；
Preferably, the re-generatively cooled body portion combustion chamber end inner wall outside is welded by welding lock base frame rank with head 1, platform
Along external diameter be Φ 117mm (tolerance -0.1mm~-0.05mm) under rank, on step along external diameter be Φ 120mm (tolerance -0.2mm~-
0.05mm)。
Preferably, the re-generatively cooled body portion combustion chamber end outer exterior wall is welded by annular boss and the small end of connection ring 3,
Annular boss external diameter is Φ 120mm (tolerance -0.2mm~-0.05mm).
Preferably, welded, locked under base frame rank along external diameter with the end greatly of connection ring 3 by welding lock base frame rank on the outside of the head
For Φ 140mm (tolerance -0.1mm~-0.05mm).
Preferably, the internal diameter of the mounting groove is Φ 117mm (tolerance 0.05mm~0.1mm).
Compared with prior art, the invention has the advantages that：
Weld seam bar number is few, non-overlapping weld seam, and attachment structure reliability is high；Numerical control welding is easy to implement, weld penetration is consistent
Property is good；By the setting of coolant filtration net, the anti-fifth wheel pollution capacity of engine is improved, and engine presentation quality is good,
Expansion is strong, suitable for the connection in rocket motor chain-drive section and re-generatively cooled body portion, also has one to annular jacket structured connection
Fixed reference.
Brief description of the drawings
Fig. 1 is the signal of the new Joining Structure in a kind of rocket motor chain-drive section of the embodiment of the present invention and re-generatively cooled body portion
Figure；
Fig. 2 is the enlarged drawing of the A in Fig. 1.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
As Figure 1-Figure 2, the embodiments of the invention provide the new of a kind of rocket motor chain-drive section and re-generatively cooled body portion
Type attachment structure, including head, re-generatively cooled body portion, connection ring and screen pack, head spray panel direction are provided with mounting groove,
For positioning the combustion section in re-generatively cooled body portion, the first weld seam 5 is set on the outside of the head, is welded to connect for high energy beam current
The big end of ring；The re-generatively cooled body portion combustion section inner wall outside sets the second weld seam 7, for high energy beam current welded header, structure
Connected in into head body；The re-generatively cooled body portion outer exterior wall sets the 3rd weld seam 6, for argon arc welding connection ring small end；Institute
State screen pack to be fixed on the inside of connection ring by filter skeleton spot welding, lift the anti-fifth wheel pollution capacity of engine；The mistake
Some unthreaded holes have been evenly arranged on filter skeleton, cooling agent is flowed into head by re-generatively cooled body portion.
The thickness of the connection ring 3 is 2mm, and big to hold internal diameter Φ 140mm (tolerance 0.05mm~0.1mm), small end inner diameter is
Φ 120mm (tolerance 0.05mm~0.2mm), overall length 30mm.
The thickness of the filter skeleton is 2mm, vertical with the hypotenuse among connection ring, is evenly arranged 24 Φ 3 light
Hole, the lower edge size of filter skeleton is Φ 120mm (tolerance 0.05mm~0.2mm).
The spot welding of screen pack 4 is fixed on the small side of filter skeleton, and screen pack precision is 400 μm；
The combustion chamber end inner wall outside of re-generatively cooled body portion 2 is welded by welding lock base frame rank with head 1, step lower edge
External diameter is Φ 117mm (tolerance -0.1mm~-0.05mm), on step along external diameter be Φ 120mm (tolerance -0.2mm~-
0.05mm)。
The combustion chamber end outer exterior wall of re-generatively cooled body portion 2 is welded by annular boss and the small end of connection ring 3, convex annular
Platform external diameter is Φ 120mm (tolerance -0.2mm~-0.05mm).
The outside of the head 1 is welded by welding lock base frame rank with the end greatly of connection ring 3, and it is Φ to lock under base frame rank along external diameter
140mm (tolerance -0.1mm~-0.05mm).
The internal diameter of the mounting groove is Φ 117mm (tolerance 0.05mm~0.1mm).
The assembling process of this specific implementation is as follows：
S1, the small side spot welding screen pack 4 of filter skeleton in connection ring 3；
S2, connection ring 3 is inserted in the combustion chamber end of re-generatively cooled body portion 2, is pushed into the peri-laryngeal of re-generatively cooled body portion 2；
S3, re-generatively cooled body portion 2 is fixed in the mounting groove on head 1, weld seam 1, weld seam are formed using high energy beam fluid welding
Fusion penetration 1.6mm~2.1mm；
S4, connection ring 3 is pushed into head 1 by the throat positions of re-generatively cooled Shen Bu 2；
S5, using high energy beam fluid welding formed weld seam 2, weld penetration 2.1mm~3.0mm；
S6, using argon arc welding formed weld seam 3.
When this specific implementation engine works, cooling agent is flowed into by the nozzle hole end of re-generatively cooled body portion 2, through re-generatively cooled body
The cooling jacket in portion 2, the attachment structure between head 1 and re-generatively cooled body portion 2, leads to subsequently into the radial direction in head 1
Road, flow into engine chamber and participate in combustion reaction.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (8)
1. a kind of rocket motor chain-drive section and the new Joining Structure in re-generatively cooled body portion, it is characterised in that including head, regeneration
Body portion, connection ring and screen pack are cooled down, head spray panel direction is provided with mounting groove, for positioning the combustion in re-generatively cooled body portion
Room section is burnt, the first weld seam (5) is set on the outside of the head, the big end of ring is welded to connect for high energy beam current；The re-generatively cooled body
Portion's combustion section inner wall outside sets the second weld seam (7), for high energy beam current welded header, forms in head body and connects；It is described again
But body portion outer exterior wall sets the 3rd weld seam (6) to raw food, for argon arc welding connection ring small end；The screen pack passes through filter
Skeleton spot welding is fixed on the inside of connection ring；Some unthreaded holes have been evenly arranged on the filter skeleton.
2. a kind of rocket motor chain-drive section according to claim 1 and the new Joining Structure in re-generatively cooled body portion, it is special
Sign is that the thickness of the connection ring (3) is 2mm, and big to hold internal diameter Φ 140mm, small end inner diameter is Φ 120mm, overall length 30mm.
3. a kind of rocket motor chain-drive section according to claim 1 and the new Joining Structure in re-generatively cooled body portion, it is special
Sign is that the thickness of the filter skeleton is 2mm, vertical with the hypotenuse among connection ring, is evenly arranged 24 Φ 3 light
Hole, the lower edge size of filter skeleton is Φ 120mm.
4. a kind of rocket motor chain-drive section according to claim 1 and the new Joining Structure in re-generatively cooled body portion, it is special
Sign is that screen pack (4) spot welding is fixed on the small side of filter skeleton, and screen pack precision is 400 μm.
5. a kind of rocket motor chain-drive section according to claim 1 and the new Joining Structure in re-generatively cooled body portion, it is special
Sign is that re-generatively cooled body portion (2) the combustion chamber end inner wall outside is welded by welding lock base frame rank with head (1), step
Lower along external diameter is Φ 117mm, along external diameter is Φ 120mm on step.
6. a kind of rocket motor chain-drive section according to claim 1 and the new Joining Structure in re-generatively cooled body portion, it is special
Sign is that re-generatively cooled body portion (2) the combustion chamber end outer exterior wall is welded by annular boss and connection ring (3) small end, ring
Shape boss external diameter is Φ 120mm.
7. a kind of rocket motor chain-drive section according to claim 1 and the new Joining Structure in re-generatively cooled body portion, it is special
Sign is, is welded on the outside of the head (1) by welding lock base frame rank with connection ring (3) end greatly, locks under base frame rank and is along external diameter
Φ140mm。
8. a kind of rocket motor chain-drive section according to claim 1 and the new Joining Structure in re-generatively cooled body portion, it is special
Sign is that the internal diameter of the mounting groove is Φ 117mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345885.8A CN106050474B (en) | 2016-05-23 | 2016-05-23 | A kind of new Joining Structure in rocket motor chain-drive section and re-generatively cooled body portion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345885.8A CN106050474B (en) | 2016-05-23 | 2016-05-23 | A kind of new Joining Structure in rocket motor chain-drive section and re-generatively cooled body portion |
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| CN106050474A CN106050474A (en) | 2016-10-26 |
| CN106050474B true CN106050474B (en) | 2017-12-15 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762227B (en) * | 2016-12-26 | 2018-02-06 | 西安航天发动机厂 | A kind of liquid rocket engine thrust chamber body portion high temperature brazing anti-deformation rotating shaft |
| CN107917016B (en) * | 2017-11-29 | 2024-02-09 | 北京航天动力研究所 | Head shell structure of high-pressure-bearing precombustion chamber |
| CN108488006A (en) * | 2018-03-20 | 2018-09-04 | 北京宇航***工程研究所 | It is a kind of to weld ultra-thin-wall tank entirely and be suitable for all-welded welding structure |
| CN108979900A (en) * | 2018-08-29 | 2018-12-11 | 北京航天动力研究所 | A kind of collection pendular ring in liquid rocket engine thrust chamber body portion |
| CN109827191B (en) * | 2019-01-17 | 2020-11-10 | 上海空间推进研究所 | Double-cooling regenerative cooling body part structure of liquid rocket engine |
| CN110159456B (en) * | 2019-04-16 | 2020-07-14 | 上海空间推进研究所 | Rocket engine thrust chamber |
| CN111237087B (en) * | 2020-01-19 | 2024-03-22 | 西北工业大学 | Micro-pore plate active and passive composite cooling structure for aerospace power and cooling method |
| CN111997785A (en) * | 2020-07-17 | 2020-11-27 | 沈阳航天新光集团有限公司 | Rocket engine combustion chamber with regenerative cooling structure |
| CN112628021B (en) * | 2020-12-01 | 2021-11-16 | 蓝箭航天空间科技股份有限公司 | Sealing welding method for end part of thrust chamber and rocket engine thrust chamber |
| CN113175393B (en) * | 2021-04-25 | 2022-07-29 | 北京航天动力研究所 | Straight-flow groove type edge film cooling structure of thrust chamber |
| CN114483382B (en) * | 2021-12-29 | 2023-07-14 | 北京航天动力研究所 | 3D prints integration spray tube extension |
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