CN116861569A - Rocket engine pipeline assembly and manufacturing method thereof - Google Patents
Rocket engine pipeline assembly and manufacturing method thereof Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 79
- 238000012360 testing method Methods 0.000 claims abstract description 339
- 238000005452 bending Methods 0.000 claims abstract description 37
- 238000003466 welding Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 18
- 239000000654 additive Substances 0.000 claims description 16
- 230000000996 additive effect Effects 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 238000003754 machining Methods 0.000 claims description 6
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- 230000035515 penetration Effects 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 4
- 239000000306 component Substances 0.000 description 8
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
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- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
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Abstract
The embodiment of the application provides a rocket engine pipeline assembly and a manufacturing method thereof, belonging to the technical field of rocket engines. The manufacturing method comprises the following steps: establishing a three-dimensional model of a pipeline assembly of the rocket engine; then, dividing at least one bent pipe model and at least one straight pipe model from the three-dimensional model of the pipeline assembly, and respectively manufacturing at least one test bent pipe and at least one test straight pipe; then splicing and welding all the test bent pipes and all the test straight pipes together according to the three-dimensional model to obtain a test pipeline assembly; thereby determining a parameter deviation of the test pipeline assembly from the three-dimensional model of the pipeline assembly; and then manufacturing the actual pipeline assembly based on the three-dimensional model of the pipeline assembly and the parameter deviation. The manufacturing method provided by the application omits the step of pre-bending the pipeline, not only improves the production efficiency of the pipeline assembly, but also enables the layout of the pipeline assembly to be more compact, and further enables the structure of the rocket engine to be more compact.
Description
Technical Field
The application relates to the technical field of rocket engines, in particular to a rocket engine pipeline assembly and a manufacturing method thereof.
Background
The pipeline assembly comprises a pipeline and connecting pieces arranged at two ends of the pipeline. The pipeline is used as a conveying device for working mediums such as gas, liquid and the like in the rocket engine, is not only a foundation of the rocket engine, but also a core component of the rocket engine, and is widely applied to various rocket engine products.
In the working process of the rocket engine, the pipeline is used as a connecting system among all parts of the rocket engine, and the use requirement needs to be met in a severe working environment, so that high requirements are put on the production and the manufacture of the pipeline. At present, the engine mainly adopts a scheme of prefabricating pipelines, namely, before the engine is assembled, the pipelines are bent into a shape according to a sample, filing allowance is reserved at the two ends of the pipelines during bending, when the engine is formally assembled, the two ends of the prefabricating pipelines are compared with the actual interface positions of the engine, the two ends of the prefabricating pipelines are matched with the actual interfaces of the engine through mechanical technical means such as site positioning, filing and the like, then the two ends of the pipeline after being assembled are positioned and welded with pipeline connecting pieces, and finally the engine is assembled.
According to the method, the positions of the connectors are deviated every time, so that the pipelines which are bent in advance according to the sample are difficult to ensure that the positions of the connectors meet the use requirements, the repair workload is increased, meanwhile, the welding deformation is unknown, the repair, positioning and welding are required to be carried out for many times, the workload is greatly increased, the working efficiency is low, and the production progress is seriously influenced. In addition, the pipeline which is bent in advance by adopting cold bending has limitation on the bending radius and the length of the straight line segment between adjacent bending positions, so that the pipeline has larger outline size and is not beneficial to the compactness of the engine.
Disclosure of Invention
Aiming at the defects of the existing mode, the application provides a rocket engine pipeline assembly and a manufacturing method thereof, which are used for solving the technical problems of low production efficiency of pipelines and non-compact rocket engine structure in the prior art.
In a first aspect, an embodiment of the present application provides a method of manufacturing a rocket engine conduit assembly, comprising: establishing a three-dimensional model of a pipeline assembly of the rocket engine; dividing at least one bent pipe model and at least one straight pipe model from the three-dimensional model of the pipeline assembly, and respectively manufacturing at least one test bent pipe and at least one test straight pipe; splicing and welding each test bent pipe and each test straight pipe together according to the three-dimensional model to obtain a test pipeline assembly; determining a parameter deviation of the test pipeline assembly from a three-dimensional model of the pipeline assembly; an actual piping assembly is manufactured based on the three-dimensional model of the piping assembly and the parameter deviation.
Optionally, the pipeline assembly comprises a pipeline and connecting pieces arranged at two ends of the pipeline; dividing at least one bent pipe model and at least one straight pipe model from the three-dimensional model of the pipeline assembly, respectively manufacturing at least one test bent pipe and at least one test straight pipe, and comprising: dividing the three-dimensional model of the pipeline assembly into at least one straight pipe model, at least one bent pipe model and at least one connecting piece model; manufacturing at least one test straight pipe, at least one test bent pipe and at least one test connector respectively based on at least one straight pipe model, at least one bent pipe model and at least one connector model;
and welding each test bent pipe and each test straight pipe together according to the three-dimensional model to obtain a test pipeline assembly, wherein the method comprises the following steps of: and splicing and welding each test straight pipe, each test bent pipe and each test connecting piece together according to the three-dimensional model to obtain the test pipeline assembly.
Optionally, the pipeline assembly comprises a pipeline and connecting pieces arranged at two ends of the pipeline; dividing at least one bent pipe model and at least one straight pipe model from the three-dimensional model of the pipeline assembly, respectively manufacturing at least one test bent pipe and at least one test straight pipe, and comprising: dividing the three-dimensional model of the pipeline into at least one straight pipe model and at least one bent pipe model; manufacturing at least one test straight pipe and at least one test bent pipe respectively based on at least one straight pipe model and at least one bent pipe model;
and welding each test bent pipe and each test straight pipe together according to the three-dimensional model to obtain a test pipeline assembly, wherein the method comprises the following steps of: splicing and welding each test bent pipe and each test straight pipe together according to the three-dimensional model to obtain a test pipeline; and respectively connecting the two ends of the test pipeline with the connecting piece through welding to obtain the test pipeline assembly.
Optionally, manufacturing at least one test straight tube, at least one test bent tube and at least one test connector based on at least one of the straight tube model, at least one of the bent tube model and at least one of the connector model, respectively, comprises: based on at least one bent pipe model and at least one connecting piece model, adopting additive manufacturing to obtain at least one test bent pipe and at least one test connecting piece; the additive manufacturing process requires a substrate and a support; performing heat treatment on each test bent pipe and each test connecting piece; removing the base plate and the support member from outside of each of the test bends and the test connectors; and obtaining at least one test straight pipe by machining the standard pipe based on at least one straight pipe model.
Optionally, based on at least one of the straight tube model, at least one of the bent tube model, and at least one of the connector model, at least one test straight tube, at least one test bent tube, and at least one test connector are manufactured, respectively, further comprising: and carrying out ray detection on each test bent pipe and the test connecting piece.
Optionally, after each of the test bent pipes and each of the test straight pipes are welded together according to the three-dimensional model to obtain a test pipeline assembly and before determining parameter deviations of the test pipeline assembly and the three-dimensional model of the pipeline assembly, at least one of the following is included: performing surface penetration detection and/or radiation detection on the test pipeline assembly; and carrying out surface treatment on the inner wall of the test pipeline assembly until the roughness of the inner wall of the test pipeline assembly accords with the design roughness range.
Optionally, the parameters of the test pipeline assembly and the three-dimensional model of the pipeline assembly include at least one of: bending radius, straight line segment length, bending angle and torsion angle.
Optionally, determining a parameter deviation of the test pipeline assembly from the three-dimensional model of the pipeline assembly includes: establishing a three-dimensional model of the test pipeline assembly; determining the deviation of the parameters of the three-dimensional model of the test pipeline assembly and the parameters of the three-dimensional model of the pipeline assembly;
or, performing three-coordinate mapping on the test pipeline assembly to obtain parameters of the test pipeline assembly; and determining the deviation of the parameters of the test pipeline assembly and the parameters of the three-dimensional model of the pipeline assembly.
Optionally, building a three-dimensional model of the test line assembly includes: and performing entity scanning modeling on the test pipeline assembly to obtain a three-dimensional model of the test pipeline assembly.
In a second aspect, embodiments of the present application provide a rocket engine conduit assembly produced by the method of producing a rocket engine conduit assembly of the first aspect.
The technical scheme provided by the embodiment of the application has the beneficial technical effects that:
in the embodiment of the application, the test pipeline assembly is manufactured according to the three-dimensional model of the pipeline assembly, the parameter deviation between the test pipeline assembly and the three-dimensional model of the pipeline assembly is obtained by comparing the two models, then the three-dimensional model is adjusted according to the parameter deviation, and the actual pipeline assembly is manufactured according to the adjusted three-dimensional model, so that the interface position accuracy of the actual pipeline assembly is improved.
In addition, the embodiment of the application omits the step of bending the pipeline (namely bending the straight pipe into the bent pipe), so that the bending radius and the length of the straight line segment between adjacent bending positions can not limit the structural layout of the pipeline assembly, thereby enabling the layout of the pipeline assembly to be more compact and improving the structural compactness of the rocket engine; and the step of bending the pipeline is omitted, so that the on-site repair workload can be reduced, and the production efficiency of the pipeline assembly is improved.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a flow chart of a rocket engine pipeline manufacturing method provided by an embodiment of the application;
FIG. 2 is a flow chart of a method of manufacturing a rocket engine pipeline assembly according to an embodiment of the present application;
FIG. 3 is a flow chart of another method for manufacturing a test pipeline assembly in accordance with an embodiment of the present application;
FIG. 4 is a flow chart of a method of manufacturing rocket engine piping, according to an embodiment of the present application, for manufacturing at least one test straight tube, at least one test bent tube, and at least one test connector;
FIG. 5 is a schematic structural view of a test pipeline assembly according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a test pipeline according to an embodiment of the present application;
fig. 7 is a schematic diagram of structures of a test bent pipe and a test straight pipe according to an embodiment of the present application.
In the figure:
1-test line assembly; 11-test line; 12-test connection; 111-test straight pipes; 112-test elbow.
Detailed Description
Embodiments of the present application are described below with reference to the drawings in the present application. It should be understood that the embodiments described below with reference to the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application, and the technical solutions of the embodiments of the present application are not limited.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of other features, information, data, steps, operations, elements, components, and/or groups thereof, all of which may be included in the present application. The term "and/or" as used herein refers to at least one of the items defined by the term, e.g., "a and/or B" may be implemented as "a", or as "B", or as "a and B".
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
First, the related art to which the present application relates will be described:
the inventor of the present application has found through research that a pipeline assembly includes a pipeline and connectors disposed at both ends of the pipeline. The pipeline is used as a conveying device for working mediums such as gas, liquid and the like in the rocket engine, is not only a foundation of the rocket engine, but also a core component of the rocket engine, has the characteristics of light weight, easiness in processing, low cost and the like, and is widely applied to various rocket engine products. The rocket engine connects the components such as the thrust chamber, the turbine pump, the valve and the like through pipelines.
In the working process of the rocket engine, the pipeline is used as a connecting system among all parts of the rocket engine, and the use requirement needs to be met in a severe working environment, so that high requirements are put on the production and the manufacture of the pipeline. At present, the engine mainly adopts a scheme of prefabricating pipelines, namely, before the engine is assembled, the pipelines are bent into a shape according to a sample, filing allowance is reserved at the two ends of the pipelines during bending, when the engine is formally assembled, the two ends of the prefabricating pipelines are compared with the actual interface positions of the engine, the two ends of the prefabricating pipelines are matched with the actual interfaces of the engine through mechanical technical means such as site positioning, filing and the like, then the two ends of the pipeline after being assembled are positioned and welded with pipeline connecting pieces, and finally the engine is assembled.
According to the method, the interface position is deviated every time when the engine is assembled, and the matching degree with the interface position cannot be ensured according to the trend of the pipeline prefabricated by the sample. Meanwhile, as the prefabricated pipeline adopts a cold bending mode, each bending is influenced by factors such as the rebound quantity of the pipe, the abrasion of a bending tool and the like, the bending precision is difficult to meet the use requirement, and the workload of on-site repair is increased when the engine is assembled. Moreover, as the welding deformation is unknown, repeated repair, positioning and welding are needed, the working efficiency is low, and the production progress is seriously affected. In addition, the bending radius of the pipeline processed by adopting the cold bending process cannot be lower than 1.5 times of the outer diameter of the pipeline, the length of a straight line segment between adjacent bending positions cannot be shorter than 2 times of the bending radius, and along with the increase of the diameter of the pipeline, the proportion requirement is larger, so that the external dimension of the prefabricated pipeline is larger, and the engine structure is not compact.
The following describes the technical scheme of the present application and how the technical scheme of the present application solves the above technical problems in detail with specific embodiments. It should be noted that the following embodiments may be referred to, or combined with each other, and the description will not be repeated for the same terms, similar features, similar implementation steps, and the like in different embodiments.
The embodiment of the application provides a manufacturing method of a rocket engine pipeline, a flow chart of the method is shown in figure 1, and the manufacturing method comprises the following steps:
s101: a three-dimensional model of a pipeline assembly of a rocket engine is established.
S102: dividing at least one bent pipe model and at least one straight pipe model from the three-dimensional model of the pipeline assembly, and respectively manufacturing at least one test bent pipe 112 and at least one test straight pipe 111; and splicing and welding each test bent pipe 112 and each test straight pipe 111 together according to the three-dimensional model to obtain the test pipeline assembly 1.
S103: parameter deviations of the test line assembly 1 from the three-dimensional model of the line assembly are determined.
S104: based on the three-dimensional model of the piping component and the parameter deviation, an actual piping component is manufactured.
In this embodiment, a three-dimensional model of the pipeline assembly is built in a digital prototype of the rocket engine.
In the embodiment of the application, the test pipeline assembly 1 is manufactured according to the three-dimensional model of the pipeline assembly, the parameter deviation between the test pipeline assembly 1 and the three-dimensional model of the pipeline assembly is obtained by comparing the two models, then the three-dimensional model is adjusted according to the parameter deviation, and the actual pipeline assembly is manufactured according to the adjusted three-dimensional model, so that the interface position accuracy of the actual pipeline assembly is improved.
In addition, the embodiment of the application omits the step of bending the pipeline (namely bending the straight pipe into the bent pipe), so that the bending radius and the length of the straight line segment between adjacent bending positions can not limit the structural layout of the pipeline assembly, thereby enabling the layout of the pipeline assembly to be more compact and improving the structural compactness of the rocket engine; and the step of bending the pipeline is omitted, so that the on-site repair workload can be reduced, and the production efficiency of the pipeline assembly is improved.
In some possible embodiments, the pipeline assembly comprises a pipeline and connectors arranged at two ends of the pipeline; in the above step S102, at least one bent pipe model and at least one straight pipe model are divided from the three-dimensional model of the pipeline assembly, and at least one test bent pipe 112 and at least one test straight pipe 111 are manufactured, respectively, and the flowchart is as shown in fig. 2, and includes the following steps:
s201: the three-dimensional model of the pipeline assembly is segmented into at least one straight pipe model, at least one curved pipe model, and at least one connector model.
S202: based on the at least one straight tube model, the at least one bent tube model, and the at least one connector model, at least one test straight tube 111, at least one test bent tube 112, and at least one test connector 12 are manufactured, respectively.
And, in the step S102, each test bent pipe 112 and each test straight pipe 111 are welded together according to a three-dimensional model to obtain a test pipeline assembly 1, as shown in fig. 2, including the steps of:
s203: and splicing and welding each test straight pipe 111, each test bent pipe 112 and each test connecting piece 12 together according to the three-dimensional model to obtain the test pipeline assembly 1.
In this embodiment, the three-dimensional model of the pipeline assembly is divided into at least one straight pipe model, at least one bent pipe model and at least one connector model, and then at least one test straight pipe 111, at least one test bent pipe 112 and at least one test connector 12 are manufactured according to the at least one straight pipe model, the at least one bent pipe model and the at least one connector model, respectively, so that each test straight pipe 111, each test bent pipe 112 and each test connector 12 are splice-welded together according to the three-dimensional model to obtain the test pipeline assembly 1, as shown in fig. 5. The test connector 12 is manufactured with the test straight tube 111 and the test bent tube 112 of the pipeline and is splice welded together. During assembly, the pipeline joint position is not required to be repaired, so that the on-site repair workload is reduced.
In some possible embodiments, the pipeline assembly includes a pipeline and connectors disposed at two ends of the pipeline, the three-dimensional model of the pipeline assembly includes a three-dimensional model of the pipeline and a three-dimensional model of the connectors, at least one bent pipe model and at least one straight pipe model are divided from the three-dimensional model of the pipeline assembly in the step S102, and at least one test bent pipe 112 and at least one test straight pipe 111 are manufactured respectively, as shown in fig. 3, and the flowchart includes the following steps:
s301: the three-dimensional model of the pipeline is segmented into at least one straight pipe model and at least one curved pipe model.
S302: based on the at least one straight tube model and the at least one curved tube model, at least one test straight tube 111 and at least one test curved tube 112 are manufactured, respectively.
And, in the step S102, each test bent pipe 112 and each test straight pipe 111 are welded together according to a three-dimensional model to obtain a test pipeline assembly 1, as shown in fig. 3, including the steps of:
s303: and splicing and welding each test bent pipe 112 and each test straight pipe 111 together according to the three-dimensional model to obtain the test pipeline 11.
S304: and (3) respectively welding the two ends of the test pipeline 11 with the connecting pieces to obtain the test pipeline assembly 1.
In the present embodiment, the three-dimensional model of the pipeline is divided into at least one straight pipe model and at least one bent pipe model, and at least one test straight pipe 111 and at least one test bent pipe 112 are manufactured, respectively, as shown in fig. 7; the test straight pipes 111 and the test bent pipes 112 are then splice welded together to obtain test lines 11, as shown in FIG. 6, and then the test lines 11 are welded to the existing connectors. The test straight pipe part and the test bent pipe part of the pipeline are manufactured respectively, so that the test pipeline 11 does not need to be bent, the interface position precision of the test pipeline 11 is improved, the assembly difficulty of the test pipeline 11 is reduced, the test production efficiency is improved, and meanwhile, the compactness of the structural layout of the test pipeline 11 is improved.
In the embodiment of the application, the test straight pipe 111 and the test bent pipe 112 are welded together by laser welding or all-position welding.
In some possible embodiments, in the step S202, based on the at least one straight tube model, the at least one bent tube model, and the at least one connector model, the at least one test straight tube 111, the at least one test bent tube 112, and the at least one test connector 12 are manufactured, respectively, and the flowchart is shown in fig. 4, and includes the following steps:
s401: based on the at least one elbow model and the at least one connector model, using additive manufacturing, at least one test elbow 112 and at least one test connector 12 are obtained; the additive manufacturing process requires the use of a substrate and a support.
S402: heat treating each test elbow 112 with each test connector 12; the base plate and support outside of each test elbow 112 and test connector 12 are removed.
S403: at least one of the test straight pipes 111 is obtained by machining a standard pipe based on at least one straight pipe model.
In an embodiment of the present application, the three-dimensional model of the pipeline assembly is divided into at least one elbow model, at least one straight pipe model and at least one connector model, and at least one test elbow 112 and at least one test connector 12 are obtained through additive manufacturing; the need for a base plate and support during additive manufacturing prevents deformation of the at least one test elbow 112 and the at least one test connector 12 during additive manufacturing; then, each test bent pipe 112 and each test connecting piece 12 are subjected to heat treatment, so that stress is removed, and the heat treatment process comprises solution treatment; the substrate and support used to secure each test elbow 112 to each test connector 12 during the heat treatment process is then removed. At least one of the test straight pipes 111 is obtained by machining a standard pipe according to at least one straight pipe model. The test straight tube 111, the test bent tube 112, and the test connector 12 can be manufactured at the same time, thereby improving the production efficiency.
Alternatively, in one embodiment of the application, the three-dimensional model of the pipeline is divided into at least one elbow model and at least one straight tube model, and at least one test elbow 112 is obtained by additive manufacturing; each test elbow 112 is then heat treated to remove stress, the heat treatment process including solution treatment; the substrate and support used to secure each test elbow 112 during the heat treatment process is then removed. At least one of the test straight pipes 111 is obtained by machining a standard pipe according to at least one straight pipe model. The manufacture of the test straight tube 111 and the test bent tube 112 can be performed simultaneously, thereby improving the production efficiency. In this embodiment, the connector is an existing component and additive manufacturing is not used.
In some possible embodiments, in the step S202, based on the at least one straight tube model, the at least one bent tube model, and the at least one connector model, the at least one test straight tube 111, the at least one test bent tube 112, and the at least one test connector 12 are manufactured, respectively, and further including:
each test bend 112 is radiographed with the test connector 12.
In the embodiment of the present application, after the substrate and the supporting member for fixing each test elbow 112 and each test connector 12 in the additive manufacturing process are removed, the test elbows 112 and each test connector 12 are subjected to radiation detection, whether cracks or leaks exist in each test elbow 112 and each test connector 12 is determined, the test elbows 112 and the test connectors 12 which are qualified in radiation detection are subjected to subsequent steps, and the test elbows 112 and the test connectors 12 which are qualified in radiation detection repeat the steps S401 to S402.
In some possible embodiments, the step S102, after the step of welding each test bent pipe 112 and each test straight pipe 111 together according to the three-dimensional model to obtain the test pipeline assembly 1, and the step S103, before determining the parameter deviation of the test pipeline assembly 1 and the three-dimensional model of the pipeline assembly, further includes at least one of the following:
the test line assembly 1 is subjected to surface penetration detection and/or radiation detection.
The inner wall of the test line assembly 1 is surface treated until the roughness of the inner wall of the test line assembly 1 meets the design roughness range.
In the embodiment of the application, after each test bent pipe 112 and each test straight pipe 111 are welded together according to a three-dimensional model, surface penetration detection and/or radiation detection are carried out on the test pipeline assembly 1, so that cracks or leakage holes in the test pipeline assembly 1 are avoided; then, the inner wall of the test pipeline assembly 1 which is qualified in detection is subjected to surface treatment until the roughness of the inner wall of the test pipeline assembly 1 accords with the design roughness range.
In embodiments of the application, the material of the piping component may comprise 316L stainless steel or GH4169 nickel-based superalloy.
In some possible embodiments, the parameters of the three-dimensional model of the test line assembly 1 and the line assembly include at least one of: bending radius, straight line segment length, bending angle and torsion angle.
In the embodiment of the present application, the parameters for comparing the test pipeline assembly 1 with the three-dimensional model of the pipeline assembly mainly comprise: bending radius, straight line segment length, bending angle and torsion angle. By comparing the parameters, the deviation between the test pipeline assembly 1 and the pipeline assembly three-dimensional model is determined, so that the three-dimensional model of the pipeline assembly is corrected according to the parameter deviation, and the actual pipeline assembly meeting the requirements is manufactured.
In some possible embodiments, determining a parameter deviation of the test pipeline assembly 1 from a three-dimensional model of the pipeline assembly includes:
establishing a three-dimensional model of the test pipeline assembly 1; deviation of the parameters of the three-dimensional model of the test line assembly 1 from the parameters of the three-dimensional model of the line assembly is determined. Or, performing three-coordinate mapping on the test pipeline assembly 1 to obtain parameters of the test pipeline assembly; deviation of the parameters of the test line assembly 1 from the parameters of the three-dimensional model of the line assembly is determined.
Alternatively, in the embodiment of the present application, the parameter deviation between the three-dimensional model of the test pipeline assembly 1 and the three-dimensional model of the pipeline assembly 1 may be obtained by establishing the three-dimensional model of the two by comparing the parameters of the two. Or by a three-coordinate mapping method, each parameter of the test pipeline assembly 1 is calculated by mapping the test pipeline assembly 1, and then the parameter deviation between the parameter of the test pipeline assembly 1 and the parameter of the three-dimensional model of the pipeline assembly is obtained by comparing the parameter of the test pipeline assembly with the parameter of the three-dimensional model of the pipeline assembly.
In some possible embodiments, building a three-dimensional model of the test line assembly 1 includes:
and performing entity scanning modeling on the test pipeline assembly 1 to obtain a three-dimensional model of the test pipeline assembly 1.
In the embodiment of the application, the three-dimensional model of the test pipeline assembly 1 is obtained by carrying out entity scanning modeling on the test pipeline assembly 1, and the parameter deviation between the three-dimensional model of the test pipeline assembly 1 and the three-dimensional model of the pipeline assembly is obtained by comparing the parameters of the two models. And the three-dimensional model is adjusted according to the deviation, so that the precision of the interface position of the manufactured actual pipeline assembly is higher, the repair workload is reduced, and the production efficiency is improved.
Referring to fig. 5-7, a detailed description of one embodiment of a method for manufacturing a rocket engine pipeline according to an embodiment of the present application is provided below:
1. a three-dimensional model of a pipeline assembly of a rocket engine is established.
And establishing a three-dimensional model of the pipeline assembly in the engine digital prototype according to the drawing of the assembly of the rocket engine.
2. At least one straight tube model and at least one curved tube model are divided from the three-dimensional model.
Dividing the three-dimensional model into at least one straight pipe model and at least one bent pipe model according to the straight pipe part and the bent pipe part.
3. At least one test straight tube 111 and at least one test bent tube 112 are manufactured separately.
According to at least one elbow model, additive manufacturing is adopted to obtain at least one test elbow 112, as shown in fig. 7, the test elbow 112 is subjected to heat treatment to remove stress, then the substrate and the supporting piece which are used for fixing and supporting the test elbow 112 are removed from the outside of the test elbow 112, then the test elbow 112 is subjected to ray detection, whether cracks or leakage holes exist in the test elbow 112 or not is detected through rays, if the cracks or the leakage holes exist in the test elbow 112, the additive manufacturing step is returned, and the steps are repeated; if no cracks or leaks are present in the test elbow 112, the subsequent steps will continue. Wherein a substrate and support are used during additive manufacturing to avoid deformation of the at least one test bend 112 during additive manufacturing.
At least one test straight tube 111 is obtained by machining a standard tube according to at least one straight tube model, as shown in fig. 7. The test bent pipe 112 and the test straight pipe 111 are manufactured simultaneously, so that the manufacturing time can be saved.
4. Each test bent pipe 112 and each test straight pipe 111 were splice welded together.
The test pipe 11 is obtained by welding each test bent pipe 112 and each test straight pipe 111 together according to a three-dimensional model by laser welding or full-position welding, as shown in fig. 6. And (3) welding the two ends of the test pipeline 11 with the connecting pieces respectively by adopting laser welding or full-position welding to obtain the test pipeline assembly 1.
5. The test line assembly 1 is tested.
And (3) performing surface penetration detection and/or radiation detection on the test pipeline assembly 1 to check whether a crack or a leak exists in the test pipeline assembly 1, returning to the step (4) if the crack or the leak exists, and continuing the subsequent steps if the crack or the leak does not exist.
6. The inner wall of the test line assembly 1 was surface treated.
And carrying out surface treatment on the inner wall of the test pipeline assembly 1, and ensuring that the roughness of the inner wall of the test pipeline assembly 1 accords with the design roughness range through detection.
7. Parameter deviations of the test line assembly 1 from the three-dimensional model of the line assembly are determined.
The following two methods can be used to determine the parameter deviation of the test line assembly 1 from the three-dimensional model of the line assembly. The method comprises the following steps: and performing entity scanning modeling on the test pipeline assembly 1 to obtain a three-dimensional model of the test pipeline assembly 1, and obtaining parameter deviation between the parameters of the three-dimensional model of the test pipeline assembly 1 and the parameters of the three-dimensional model of the pipeline assembly by comparing the parameters of the three-dimensional model of the two. The second method is as follows: and carrying out three-coordinate mapping on the test pipeline assembly 1, calculating each parameter of the test pipeline assembly 1 according to the measured and mapped data, and comparing the parameter of the test pipeline assembly 1 with the parameter of the three-dimensional model of the pipeline assembly to obtain the parameter deviation between the two.
8. Manufacturing the actual pipeline assembly.
And correcting the three-dimensional model of the pipeline assembly according to the deviation between the test pipeline assembly 1 and the three-dimensional model of the pipeline assembly, and manufacturing the actual pipeline assembly by repeating the steps according to the corrected three-dimensional model.
Based on the same inventive concept, the embodiment of the application also provides a rocket engine pipeline assembly, which is manufactured by adopting the manufacturing method of the rocket engine pipeline assembly as the first aspect.
As the rocket engine pipeline adopts the manufacturing method of any rocket engine pipeline assembly provided by the embodiments, the principle and the technical effects of the rocket engine pipeline assembly refer to the embodiments, and the details are not repeated.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
1. in the embodiment of the application, the test pipeline assembly 1 is manufactured according to the three-dimensional model of the pipeline assembly, the parameter deviation between the test pipeline assembly 1 and the three-dimensional model of the pipeline assembly is obtained by comparing the two models, then the three-dimensional model is adjusted according to the parameter deviation, and the actual pipeline assembly is manufactured according to the adjusted three-dimensional model, so that the interface position accuracy of the actual pipeline assembly is improved.
In addition, the embodiment of the application omits the step of bending the pipeline (namely bending the straight pipe into the bent pipe), so that the bending radius and the length of the straight line segment between adjacent bending positions can not limit the structural layout of the pipeline assembly, thereby enabling the layout of the pipeline assembly to be more compact and improving the structural compactness of the rocket engine; and the step of bending the pipeline is omitted, so that the on-site repair workload can be reduced, and the production efficiency of the pipeline assembly is improved.
2. In this embodiment, the three-dimensional model of the pipeline assembly is divided into at least one straight pipe model, at least one bent pipe model and at least one connector model, and then at least one test straight pipe 111, at least one test bent pipe 112 and at least one test connector 12 are manufactured according to the at least one straight pipe model, the at least one bent pipe model and the at least one connector model, respectively, so that each test straight pipe 111, each test bent pipe 112 and each test connector 12 are welded together according to the three-dimensional model, thereby obtaining the test pipeline assembly 1. The test connector 12 is manufactured with the test straight tube 111 and the test bent tube 112 of the pipeline and is splice welded together. During assembly, the pipeline joint position is not required to be repaired, so that the on-site repair workload is reduced.
3. In this embodiment, the three-dimensional model of the pipeline assembly includes a three-dimensional model of the pipeline and a three-dimensional model of the connector, the three-dimensional model of the pipeline is divided into at least one straight pipe model and at least one bent pipe model, and at least one test straight pipe 111 and at least one test bent pipe 112 are manufactured, respectively, the test pipeline 11 is obtained by butt welding each test straight pipe 111 and each test bent pipe 112 together, and then the test pipeline 11 is welded with the existing connector. The test straight pipe part and the test bent pipe part of the pipeline are manufactured respectively, so that the test pipeline 11 does not need to be bent, the interface position precision of the test pipeline 11 is improved, the assembly difficulty of the test pipeline 11 is reduced, the test production efficiency is improved, and meanwhile, the compactness of the structural layout of the test pipeline 11 is improved.
Those of skill in the art will appreciate that the various operations, methods, steps in the flow, acts, schemes, and alternatives discussed in the present application may be alternated, altered, combined, or eliminated. Further, other steps, means, or steps in a process having various operations, methods, or procedures discussed herein may be alternated, altered, rearranged, disassembled, combined, or eliminated. Further, steps, measures, schemes in the prior art with various operations, methods, flows disclosed in the present application may also be alternated, altered, rearranged, decomposed, combined, or deleted.
In the description of the present application, directions or positional relationships indicated by words such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on exemplary directions or positional relationships shown in the drawings, are for convenience of description or simplification of describing embodiments of the present application, and do not indicate or imply that the devices or components referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the order in which the steps are performed is not limited to the order indicated by the arrows. In some implementations of embodiments of the application, the steps in each flow may be performed in other orders as desired, unless explicitly stated herein. Moreover, some or all of the steps in the flowcharts may include multiple sub-steps or multiple stages based on the actual implementation scenario. Some or all of the sub-steps or stages may be performed at the same time, or may be performed at different times, where the execution sequence of the sub-steps or stages may be flexibly configured according to the requirements, which is not limited by the embodiment of the present application.
The foregoing is only a part of the embodiments of the present application, and it should be noted that, for those skilled in the art, other similar implementation means based on the technical idea of the present application may be adopted without departing from the technical idea of the solution of the present application, which is also within the protection scope of the embodiments of the present application.
Claims (10)
1. A method of manufacturing a rocket engine conduit assembly, comprising:
establishing a three-dimensional model of a pipeline assembly of the rocket engine;
dividing at least one bent pipe model and at least one straight pipe model from the three-dimensional model of the pipeline assembly, and respectively manufacturing at least one test bent pipe and at least one test straight pipe; splicing and welding each test bent pipe and each test straight pipe together according to the three-dimensional model to obtain a test pipeline assembly;
determining a parameter deviation of the test pipeline assembly from a three-dimensional model of the pipeline assembly;
an actual piping assembly is manufactured based on the three-dimensional model of the piping assembly and the parameter deviation.
2. The method of manufacturing according to claim 1, wherein the piping component comprises a piping and connectors provided at both ends of the piping;
dividing at least one bent pipe model and at least one straight pipe model from the three-dimensional model of the pipeline assembly, respectively manufacturing at least one test bent pipe and at least one test straight pipe, and comprising:
dividing the three-dimensional model of the pipeline assembly into at least one straight pipe model, at least one bent pipe model and at least one connecting piece model;
manufacturing at least one test straight pipe, at least one test bent pipe and at least one test connector respectively based on at least one straight pipe model, at least one bent pipe model and at least one connector model;
and welding each test bent pipe and each test straight pipe together according to the three-dimensional model to obtain a test pipeline assembly, wherein the method comprises the following steps of:
and splicing and welding each test straight pipe, each test bent pipe and each test connecting piece together according to the three-dimensional model to obtain the test pipeline assembly.
3. The method of manufacturing according to claim 1, wherein the piping component comprises a piping and connectors provided at both ends of the piping;
dividing at least one bent pipe model and at least one straight pipe model from the three-dimensional model of the pipeline assembly, respectively manufacturing at least one test bent pipe and at least one test straight pipe, and comprising:
dividing the three-dimensional model of the pipeline into at least one straight pipe model and at least one bent pipe model;
manufacturing at least one test straight pipe and at least one test bent pipe respectively based on at least one straight pipe model and at least one bent pipe model;
and welding each test bent pipe and each test straight pipe together according to the three-dimensional model to obtain a test pipeline assembly, wherein the method comprises the following steps of:
splicing and welding each test bent pipe and each test straight pipe together according to the three-dimensional model to obtain a test pipeline;
and respectively connecting the two ends of the test pipeline with the connecting piece through welding to obtain the test pipeline assembly.
4. The method of manufacturing according to claim 2, wherein manufacturing at least one test straight tube, at least one test bent tube, and at least one test connector, respectively, based on at least one of the straight tube models, at least one of the bent tube models, and at least one of the connector models, comprises:
based on at least one bent pipe model and at least one connecting piece model, adopting additive manufacturing to obtain at least one test bent pipe and at least one test connecting piece; the additive manufacturing process requires a substrate and a support;
performing heat treatment on each test bent pipe and each test connecting piece; removing the base plate and the support member from outside of each of the test bends and the test connectors;
and obtaining at least one test straight pipe by machining the standard pipe based on at least one straight pipe model.
5. The method of manufacturing according to claim 4, wherein at least one test straight pipe, at least one test bent pipe, and at least one test connector are manufactured based on at least one of the straight pipe model, at least one of the bent pipe model, and at least one of the connector model, respectively, further comprising:
and carrying out ray detection on each test bent pipe and the test connecting piece.
6. The method of manufacturing according to claim 3 or 5, wherein after each of the test bends and each of the test straight pipes are splice welded together according to the three-dimensional model to obtain a test piping assembly and before determining a parameter deviation of the test piping assembly from the three-dimensional model of the piping assembly, further comprising at least one of:
performing surface penetration detection and/or radiation detection on the test pipeline assembly;
and carrying out surface treatment on the inner wall of the test pipeline assembly until the roughness of the inner wall of the test pipeline assembly accords with the design roughness range.
7. The method of manufacturing of claim 1, wherein the parameters of the test tubing assembly and the three-dimensional model of the tubing assembly include at least one of: bending radius, straight line segment length, bending angle and torsion angle.
8. The method of manufacturing of claim 7, wherein determining a parameter deviation of the test line assembly from the three-dimensional model of the line assembly comprises:
establishing a three-dimensional model of the test pipeline assembly; determining the deviation of the parameters of the three-dimensional model of the test pipeline assembly and the parameters of the three-dimensional model of the pipeline assembly;
or, performing three-coordinate mapping on the test pipeline assembly to obtain parameters of the test pipeline assembly; and determining the deviation of the parameters of the test pipeline assembly and the parameters of the three-dimensional model of the pipeline assembly.
9. The method of manufacturing of claim 8, wherein building a three-dimensional model of the test line assembly comprises:
and performing entity scanning modeling on the test pipeline assembly to obtain a three-dimensional model of the test pipeline assembly.
10. Rocket motor line assembly, characterized in that it is manufactured by a method for manufacturing a rocket motor line assembly according to any one of claims 1-9.
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| CN202311078900.3A CN116861569A (en) | 2023-08-25 | 2023-08-25 | Rocket engine pipeline assembly and manufacturing method thereof |
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| CN202311078900.3A CN116861569A (en) | 2023-08-25 | 2023-08-25 | Rocket engine pipeline assembly and manufacturing method thereof |
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| EP0771991A1 (en) * | 1995-11-02 | 1997-05-07 | Udo Dr.-Ing. Küppers | Elbow connection element and method of manufacture |
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