CN115711189A - Connecting method of sectional spray pipes - Google Patents
Connecting method of sectional spray pipes Download PDFInfo
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- CN115711189A CN115711189A CN202211459975.1A CN202211459975A CN115711189A CN 115711189 A CN115711189 A CN 115711189A CN 202211459975 A CN202211459975 A CN 202211459975A CN 115711189 A CN115711189 A CN 115711189A
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Abstract
The invention provides a connecting method of a sectional spray pipe, wherein the sectional spray pipe is divided into a plurality of sections along the axial direction of the spray pipe, and a cooling channel formed by an inner wall, a longitudinal rib and an outer wall of the spray pipe can realize the back-and-forth flow of a coolant. The method comprises the following steps: s1, butting the butting surfaces of a first sectional spray pipe and a second sectional spray pipe which are adjacent to each other, forming a U-shaped butting port on the butted butting part, and arranging a positioning bulge at the rib of the U-shaped butting port; and S2, mounting a plurality of clamping fins with clamping grooves on the positioning protrusions one by one to cover the U-shaped butt joints, and welding butt joint surfaces of the clamping fins one by one to complete the connection of the sectional spray pipes. The connection method is easy to operate and low in manufacturing cost.
Description
Technical Field
The invention relates to the field of space engines, in particular to a sectional nozzle connecting method.
Background
The related technology of the aerospace engine is rapidly developed along with the change of the aerospace industry. As a main component of the engine, the thrust chamber is a key component for performing energy conversion of the propellant and generating thrust. In order to withstand the high temperature of the combustion gases, the nozzles, which are the main components of the thrust, usually employ regenerative cooling technology, consisting of inner and outer walls and cooling channels. The main function of the thrust chamber nozzle is to accelerate the high-temperature airflow to be sprayed out, so that the thrust chamber generates reverse thrust.
The large-scale backflow nozzle requires an integrally machined cooling channel to realize backflow, namely, the backflow cannot be segmented in the middle, otherwise, a backflow medium short circuit is caused, and therefore cooling failure is caused. Therefore, the cooling channels of the back-and-forth flow nozzle must be completely isolated, and need to be manufactured integrally. The large-scale mould and processing equipment and the requirement of high precision greatly improve the difficulty and the cost of manufacturing the large-scale spray pipe.
In view of this, it is desirable to design a sectional nozzle connecting method with low cost and simple operation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a connecting method of a sectional spray pipe.
The invention provides a connecting method of a sectional spray pipe, wherein the sectional spray pipe is divided into a plurality of sections along the axial direction of the spray pipe, a cooling channel formed by an inner wall, a longitudinal rib and an outer wall of the spray pipe can realize the back-and-forth flow of a coolant, and the method comprises the following steps:
s1, butting the butting surfaces of a first sectional spray pipe and a second sectional spray pipe which are adjacent to each other, forming a U-shaped butting port on the butted butting part, and arranging a positioning bulge at the rib of the U-shaped butting port;
and S2, mounting a plurality of clamping fins with clamping grooves on the positioning protrusions one by one to cover the U-shaped butt joints, and welding butt joint surfaces of the clamping fins one by one to complete the connection of the sectional spray pipes.
According to one embodiment of the invention, in step S1: the U-shaped butt joint is formed by arranging an outer wall and ribs into an annular U shape by taking an inner wall as a bottom surface, and the butt joint surfaces of the first sectional spray pipe and the second sectional spray pipe are symmetrically arranged into a half U shape.
According to one embodiment of the invention, in step S1: the U-shaped butt joint is arranged at the center of the rib, the positioning bulge is of a half U shape, and the first positioning bulge of the first sectional spray pipe and the second positioning bulge of the second sectional spray pipe are both away from the inner wall butt joint line by a certain distance.
According to one embodiment of the invention, in step S1: the U-shaped butt joint is provided with a transition fillet, and the range R of the transition fillet is 0.5-2 mm.
According to one embodiment of the invention, in step S2: the screens fin wholly is the L type, divides into first side and second side, first side is used for covering the top of U type interface sets to squarely, the second side is used for covering the side of U type interface sets to the U type, the screens fin covers behind the U type interface, first side with first segmentation spray tube with the outer wall smooth transition of second segmentation spray tube.
According to one embodiment of the invention, in step S2: the thickness of the first side face is the thickness of the outer wall, and the thickness of the second side face is the thickness of the ribs.
According to one embodiment of the invention, in step S2: set up the screens fin the both ends of first side are the form of overlap joint platform, the overlap joint platform divide into first faying face and second faying face, with adjacent two the butt joint of screens fin back, first faying face and adjacent the second faying face overlap joint each other.
According to one embodiment of the invention, in step S2: the clamping rib is arranged on the first side face of the U-shaped butt joint, and the clamping ribs are arranged on the second side face of the U-shaped butt joint.
According to one embodiment of the invention, before step S2: firstly, welding the inner wall connecting joint of the first sectional spray pipe and the second sectional spray pipe after butt joint.
According to one embodiment of the invention, in step S2: installing one behind the screens fin, along the screens fin with the U type route that the locating protrusion matches each other will the second side welds to the rib on, and the installation is adjacent after that the same U type route of following behind the screens fin will the second side welds to corresponding rib on, then welds two the screens fin the joint line of first side, repeat this step until all the screens fin installation welding is accomplished, welds at last all the screens fin with first segmentation spray tube with the joint line between the second segmentation spray tube.
According to the connecting method of the segmented spray pipe, the modularized micro clamping fins are added, the clamping fins with the clamping grooves are installed on the positioning protrusions one by one to cover the U-shaped butt joint, the clamping fins are welded one by one and then rebuilt to return the cooling channel, and recovery of all flow paths is achieved. The connecting method of the sectional spray pipes ensures that the function of the coolant for backflow is not affected, the original large-scale backflow spray pipe is changed from integral manufacturing to sectional manufacturing, and the processing difficulty and cost are greatly reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic illustration of a method of connecting a sectioned nozzle according to one embodiment of the present invention;
FIG. 2 is a schematic illustration of two segmented nozzle interface surfaces according to an embodiment of the present invention;
FIG. 3 is a schematic view of an integral nozzle of one embodiment of the present invention;
FIGS. 4 a-4 d are schematic views of different sides of a retaining rib for attachment to a segmented nozzle in accordance with one embodiment of the present invention;
FIGS. 5-10 are schematic illustrations of the steps of connecting the staged nozzles in various embodiments of the invention.
Reference numerals:
101-a first segmented nozzle, 102-a second segmented nozzle, 201-a U-shaped butt joint, 202-a positioning protrusion, 2021-a first positioning protrusion, 2022-a second positioning protrusion, 301-a clamping rib, 3011-a first side face, 3012-a second side face, 3013-a first lapping face, 3014-a second lapping face, and 3015-a clamping groove.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention, for the purposes of illustrating the principles of the invention. Additionally, the components in the drawings are not necessarily to scale. For example, the dimensions of some of the elements or regions in the figures may be exaggerated relative to other elements or regions to help improve understanding of embodiments of the present invention.
The directional terms used in the following description are used in the illustrated directions, and do not limit the specific configurations of the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise specified, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
Furthermore, the terms "comprises," "comprising," "includes," "including," "has," "having" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure or assembly that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure or assembly. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of another like element in an article or device comprising the element.
Spatially relative terms such as "below," "…," "low," "above," "…," "high," and the like are used to facilitate description to explain the positioning of one element relative to a second element, meaning that the terms are intended to encompass different orientations of the device in addition to different orientations than those shown in the figures. In addition, for example, the phrase "one element is over/under another element" may mean that the two elements are in direct contact, and may also mean that there are other elements between the two elements. In addition, terms such as "first", "second", and the like are also used to describe various elements, regions, sections, etc. and should not be taken as limiting. Like terms refer to like elements throughout the description.
It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
FIG. 1 is a schematic illustration of a method of connecting a sectioned nozzle according to one embodiment of the present invention; FIG. 2 is a schematic illustration of a two segment nozzle interface according to an embodiment of the present invention; FIG. 3 is a schematic view of an integral nozzle of one embodiment of the present invention; FIGS. 4 a-4 d are schematic views of different sides of a retaining rib for attachment to a segmented nozzle in accordance with one embodiment of the present invention; FIGS. 5-10 are schematic illustrations of the steps for connecting the segmented lances in various embodiments of the invention.
As shown in fig. 1 to 4d, the present invention provides a method of connecting a divided nozzle. The segmented spray pipe is divided into a plurality of segments along the axial direction of the spray pipe, a cooling channel formed by an inner wall N, a longitudinal rib T and an outer wall W of the spray pipe can realize the back-and-forth flow of a coolant, and the method comprises the following steps:
step S1, butting the butting surfaces of a first subsection spray pipe 101 and a second subsection spray pipe 102 which are adjacent to each other, forming a U-shaped butting port 201 at the butting part after butting, and arranging a positioning bulge 202 at a rib T of the U-shaped butting port 201;
and S2, mounting the clamping ribs 301 with the clamping grooves 3015 on the positioning protrusions 202 one by one to cover the U-shaped butt joints 201, and welding the butt joint surfaces of the clamping ribs 301 one by one to complete the connection of the sectional spray pipes.
According to one embodiment of the invention, in step S1: the U-shaped butt joint 201 is provided with a transition fillet, and the range R of the transition fillet is 0.5-2 mm.
Specifically, the connection method of the segmented nozzles in the application can realize the connection of a plurality of segmented nozzles of the coolant backflow nozzle through the special design and mounting and welding steps of the positioning protrusions 202 of the U-shaped butt joint port 201 and the clamping ribs 301, ensures that the function of backflow of the coolant is not affected, changes the original large backflow nozzle from integral manufacturing into segmented manufacturing, and greatly reduces the processing difficulty and cost.
As shown in fig. 3, the connection method of the sectional nozzles of the present application is suitable for connection between the sectional nozzles below the liquid collector J, the coolant enters the nozzles from the medium inlet in the liquid collector J and is divided into two paths, one path of the coolant upwards reaches the throat to be cooled and then enters the combustion chamber to be combusted, and the other path of the coolant downwards returns back and forth to complete nozzle cooling through the cooling channel of the flow nozzle, returns to the liquid collector J and further cools the throat and then enters the combustion chamber to be combusted. The cooling channels of the nozzle usually consist of an inner wall N, an outer wall W and intermediate longitudinal ribs T, which may also be formed integrally by means of material additions or the like. According to the size of the spray pipe, the downstream part of the spray pipe liquid collector J, which needs a process subsection, is designed into a plurality of subsection spray pipes along the axial direction, and each subsection spray pipe is processed respectively. For example, the required number of detent ribs 301 at the U-shaped docking port 201 of the segmented nozzle is the same, and the slot width is the same.
As shown in fig. 2, the size of the U-shaped docking port 201, i.e., the width and height of the U-shape, may be adjusted according to the height of the cooling channel, and as an example, the width of the U-shaped docking port 201 may be set to 2 to 5mm, and the transition radius range of the U-shaped docking port 201 may be set to R0.5 to 2mm.
As shown in fig. 4a to 4d, in the present embodiment, by adding the modularized micro-positioning rib 301, a plurality of positioning ribs 301 with slots 3015 are mounted on the positioning protrusion 202 one by one to cover the U-shaped docking port 201, and the positioning ribs 301 are soldered one by one and then re-established to reflow the cooling channel, thereby restoring all the flow paths. The connecting method ensures that the flow resistance of the cooling channel is not increased, the flow path of the cooling channel is not short-circuited, the phenomenon that the cooling effect is lost due to short flow of the coolant at the connecting position is avoided, and the connecting method has high bearing capacity. As an example, a low-energy laser welding of the abutment surfaces of the blocking ribs 301 can be used, so that all deformations are controllable.
As shown in fig. 2, according to one embodiment of the present invention, in step S1: the U-shaped docking port 201 is formed by arranging the outer wall W and the ribs T in an annular U shape with the inner wall N as a bottom surface, and the docking surfaces of the first-stage nozzle 101 and the second-stage nozzle 102 are symmetrically arranged in a half U shape.
Specifically, the U-shaped docking port 201 is the bottom surface of the inner wall N of the first-stage nozzle 101 and the second-stage nozzle 102 after docking, in one embodiment, the outer wall W and the rib T are machined into annular U-shaped grooves with the same width by turning, and then the positioning protrusion 202 is machined by a machining blade cutter clamping the rib T. In another embodiment, an additive manufacturing mode can be adopted, and the U-shaped docking interface 201 and the positioning protrusion 202 can be formed by a printing-formed segmented nozzle directly in one step during printing. The butt joint surfaces of the first sectional nozzle 101 and the second sectional nozzle 102 are symmetrically arranged into a half U shape, so that the clamping ribs 301 can be conveniently and symmetrically arranged and welded on the U-shaped butt joint port 201.
According to one embodiment of the invention, in step S1: the positioning protrusion 202 arranged at the center of the rib T of the U-shaped butt joint 201 is half U-shaped, and the first positioning protrusion 2021 of the first sectional nozzle 101 and the second positioning protrusion 2022 of the second sectional nozzle 102 are both away from the butt joint line of the inner wall N by a certain distance.
Specifically, the U-shaped docking port 201 is provided with a strip-shaped half U-shaped first positioning protrusion 2021 corresponding to the center of the rib T of the first segmented nozzle 101, and a strip-shaped half U-shaped second positioning protrusion 2022 corresponding to the center of the rib T of the second segmented nozzle 102, wherein the first positioning protrusion 2021 and the second positioning protrusion 2022 are both spaced from the docking line N of the inner wall by a certain distance, and are discontinuously disposed on the U-shaped docking port 201.
As shown in fig. 4a to 4d, according to one embodiment of the present invention, in step S2: the clamping rib 301 is L-shaped and is divided into a first side surface 3011 and a second side surface 3012, the first side surface 3011 is used for covering the upper side of the U-shaped docking port 201 and is set to be square, and the second side surface 3012 is used for covering the side of the U-shaped docking port 201 and is set to be U-shaped. After the locking rib 301 covers the U-shaped docking port 201, the first side surface 3011 is in smooth transition with the outer walls W of the first and second segmented nozzles 101 and 102.
In particular, a suitable detent rib 301 module is designed and produced according to the U-shaped docking opening 201 and the positioning projection 202. As an example, the locking rib 301 may be set to have a height of 6mm and a width of 3mm. The L-shaped detent rib 301 is divided into a first side 3011 and a second side 3012. Similarly, as previously described, the first side 3011 is configured to be square shaped to accommodate the top of the U-shaped docking port 201, and the second side 3012 is configured to be U-shaped to accommodate the side of the U-shaped docking port 201. After the retaining ribs 301 cover the U-shaped docking port 201, the first side surface 3011 is in smooth transition with the outer walls W of the first-stage nozzle 101 and the second-stage nozzle 102.
Through the plurality of clamping fins 301 in this embodiment, the upper ends of the U-shaped docking ports 201 formed by the first-stage spray pipes 101 and the second-stage spray pipes 102 can be effectively covered, and the second side surfaces 3012 of each clamping fin 301 can effectively seal the corresponding cooling channel, so that the flow paths of the cooling channels are not short-circuited, and the coolant is prevented from losing the cooling effect due to short flow at the connection position.
According to one embodiment of the invention, in step S2: the thickness of the first side surface 3011 is the thickness of the outer wall W, and the thickness of the second side surface 3012 is the thickness of the rib T.
According to one embodiment of the invention, in step S2: the two ends of the first side 3011 of the locking rib 301 are in the form of overlapping platforms. The lapping table is divided into a first lapping surface 3013 and a second lapping surface 3014, and after two adjacent clamping ribs 301 are butted, the first lapping surface 3013 and the adjacent second lapping surface 3014 are lapped with each other.
According to one embodiment of the invention, in step S2: two slots 3015 are disposed below the second side surface 3012 of the locking rib 301, and the two slots 3015 are used to respectively embed the first positioning protrusion 2021 and the second positioning protrusion 2022 in the process of installing the locking rib 301 to the U-shaped docking port 201.
Specifically, since the first side surface 3011 of the detent rib 301 is used to cover the upper side of the U-shaped docking port 201 and smoothly transit to the outer walls W of the first and second sectional nozzles 101 and 102, the thickness of the first side surface 3011 is set to the thickness of the outer wall W; the second side 3012 of the locking rib 301 is used to cover the smooth transition of the lateral rib T of the U-shaped docking port 201, so the thickness of the second side 3012 is set to the thickness of the rib T. The spray pipe adopting the connecting method is more stable and firm.
Wherein, the height of the lapping table of the first side surface 3011 of the blocking rib 301 is 1/3-1/2 of the thickness of the outer wall W. The lapping table is divided into a first lapping surface 3013 and a second lapping surface 3014, and the first lapping surface 3013 and the second lapping surface 3014 are square concave tables matched with each other in shape and are respectively arranged at the upper end and the lower end of the first side surface 3011. The first contact surface 3013 of one blocking rib 301 and the second contact surface 3014 of the adjacent blocking rib 301 contact each other, and each blocking rib 301 is welded after this step to complete the connection of the first and second segmented nozzles 101 and 102.
In one embodiment, the width of the two slots 3015 below the second side 3012 of the locking rib 301 is equal to the width of the positioning protrusion 202, and a positive tolerance interval of 0.1mm can be selected. When the clamping rib 301 is installed on the U-shaped interface, the first positioning protrusion 2021 and the second positioning protrusion 2022 can be respectively inserted into the two slots 3015, so that accurate positioning can be achieved and stability can be achieved after installation.
As shown in fig. 5, according to an embodiment of the present invention, before step S2: firstly, welding the connecting seam of the inner wall N after the first sectional nozzle 101 and the second sectional nozzle 102 are butted.
As shown in fig. 6 to 10, according to one embodiment of the present invention, in step S2: after one of the locking ribs 301 is installed, the second side 3012 is welded to the rib T along the U-shaped path where the locking rib 301 and the locking protrusion 202 cooperate with each other. After the adjacent locking ribs 301 are mounted, the second side 3012 is welded to the corresponding rib T along the U-shaped path, and then the connecting seams of the first sides 3011 of the two locking ribs 301 are welded. The steps are repeated until all the blocking ribs 301 are installed and welded, and finally, the connecting seams between all the blocking ribs 301 and the first sectional nozzle 101 and the second sectional nozzle 102 are welded.
Specifically, the first sectional nozzle 101 and the second sectional nozzle 102 are butted, the butt joint position of each rib T is ensured to be aligned along the axial direction, and the inner wall N is welded by adopting a laser beam to connect an I-shaped path groove of a welding seam.
The locking ribs 301 are sequentially installed one by one, and a U-shaped connecting weld of the locking ribs 301, that is, a U-shaped path weld of the locking ribs and the first and second positioning protrusions 2021 and 2022 which are matched with each other, is welded in advance in the arrow direction shown in fig. 6, so as to weld the second side surface 3012 to the rib T. The second side 3012 is then welded to the corresponding rib T, also along a U-shaped path, after the installation of the adjacent blocking rib 301. Then, a connecting seam, i.e., an I-shaped path lap weld seam, of the first side surfaces 3011 of the two blocking ribs 301 is welded, a third adjacent blocking rib 301 is installed, and a U-shaped path weld seam and an I-shaped path weld seam are welded in sequence. Wherein the I-path weld requires extending the weld to both sides of the outer wall W to improve the weld strength. This procedure is repeated until all the blocking ribs 301 are welded, and finally all the blocking ribs 301 are welded to the annular connecting seams between the first and second segmented nozzles 101, 102. And (4) inflating the cooling channel of the spray pipe to detect a leak point, and completing the preparation of the spray pipe if no abnormality occurs.
As one of the embodiments, the weld penetration of the U-shaped path is 0.5-1 mm, the time for positioning and clamping each blocking rib 301 is about 10 seconds, the time for laser welding each weld is about 10+10 seconds, and the automatic production cycle is about, in one embodiment, calculated according to 300 blocking ribs of a spray pipe: 300 × 30s =150 minutes.
According to the sectional spray pipe connecting method, the clamping ribs 301 are adopted to achieve that multiple independent welding seams can be more reliable, the welding efficiency can be remarkably improved, the bearing is enhanced through the strength of the clamping ribs 301, the clamping ribs are sealed through laser welding, and the function of bearing and refluxing of a propellant can be achieved. For torque loads, they are carried by the weld together with the detent 3015 of the detent rib 301. Under the scale of the existing production equipment and printing equipment, the method can be used for producing the ultra-large type inflow and outflow nozzle, has high connection bearing strength, high process automation degree and high efficiency, and solves the problem that the large type inflow and outflow nozzle can not be manufactured in a segmented and separated manner and connected in a segmented manner at low cost.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method of connecting a plurality of sectional nozzles, wherein the sectional nozzles are divided into a plurality of sections along an axial direction of the nozzles, and a cooling passage formed by an inner wall, longitudinal ribs and an outer wall of the nozzles allows a coolant to flow back and forth, the method comprising:
s1, butting the butting surfaces of a first sectional spray pipe and a second sectional spray pipe which are adjacent to each other, forming a U-shaped butting port at the butted butting part, and arranging a positioning bulge at the rib of the U-shaped butting port;
and S2, mounting a plurality of clamping fins with clamping grooves on the positioning protrusions one by one to cover the U-shaped butt joints, and welding butt joint surfaces of the clamping fins one by one to complete the connection of the sectional spray pipes.
2. The method of connecting a sectional nozzle according to claim 1, wherein in step S1: the U-shaped butt joint is formed by arranging an outer wall and ribs into an annular U shape by taking an inner wall as a bottom surface, and the butt joint surfaces of the first sectional spray pipe and the second sectional spray pipe are symmetrically arranged into a half U shape.
3. The method of connecting a sectional nozzle according to claim 1, wherein in step S1: the U-shaped butt joint is arranged at the center of the rib, the positioning bulge is of a half U shape, and the first positioning bulge of the first sectional spray pipe and the second positioning bulge of the second sectional spray pipe are both away from the inner wall butt joint line by a certain distance.
4. The method of connecting a sectional nozzle according to claim 1, wherein in step S1: the U-shaped butt joint is provided with a transition fillet, and the range R of the transition fillet is 0.5-2 mm.
5. The method of connecting a sectional nozzle according to claim 3, wherein in step S2: the screens fin wholly is the L type, divides into first side and second side, first side is used for covering the top of U type interface sets to squarely, the second side is used for covering the side of U type interface sets to the U type, the screens fin covers behind the U type interface, first side with first segmentation spray tube with the outer wall smooth transition of second segmentation spray tube.
6. The method of connecting a sectional nozzle according to claim 5, wherein in step S2: the thickness of the first side face is the thickness of the outer wall, and the thickness of the second side face is the thickness of the ribs.
7. The method of connecting a sectional nozzle according to claim 5, wherein in step S2: set up the screens fin the both ends of first side are the form of overlap joint platform, the overlap joint platform divide into first faying face and second faying face, with adjacent two the butt joint of screens fin back, first faying face and adjacent the second faying face overlap joint each other.
8. The method of connecting a sectional nozzle according to claim 6, wherein in step S2: the clamping rib is arranged on the first side face of the U-shaped butt joint, and the clamping ribs are arranged on the second side face of the U-shaped butt joint.
9. The method of connecting a sectioned nozzle according to claim 1, wherein, before step S2: firstly, welding the inner wall connecting joint of the first sectional spray pipe and the second sectional spray pipe after butt joint.
10. The method of connecting a sectional nozzle according to claim 5, wherein in step S2: installing one behind the screens fin, along the screens fin with the U type route that the locating protrusion matches each other will the second side welds to the rib on, and the installation is adjacent after that the same U type route of following behind the screens fin will the second side welds to corresponding rib on, then welds two the screens fin the joint line of first side, repeat this step until all the screens fin installation welding is accomplished, welds at last all the screens fin with first segmentation spray tube with the joint line between the second segmentation spray tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211459975.1A CN115711189A (en) | 2022-11-17 | 2022-11-17 | Connecting method of sectional spray pipes |
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| CN202211459975.1A CN115711189A (en) | 2022-11-17 | 2022-11-17 | Connecting method of sectional spray pipes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116038171A (en) * | 2023-03-30 | 2023-05-02 | 北京星河动力装备科技有限公司 | Regenerative cooling thrust chamber and manufacturing method thereof |
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2022
- 2022-11-17 CN CN202211459975.1A patent/CN115711189A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116038171A (en) * | 2023-03-30 | 2023-05-02 | 北京星河动力装备科技有限公司 | Regenerative cooling thrust chamber and manufacturing method thereof |
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