Preparation method of rocket engine pipeline, rocket engine pipeline and engine
阅读说明：本技术 火箭发动机管路的制备方法、火箭发动机管路及发动机 (Preparation method of rocket engine pipeline, rocket engine pipeline and engine ) 是由 杨正 张春林 朱景文 曾诚 孟鹏 裴曦 严伟 于 2019-09-10 设计创作，主要内容包括：本发明提供了一种火箭发动机管路的制备方法、火箭发动机管路和发动机。制备方法包括：管路和管路连接件；将所述管路连接件在所述管路的端部固定,获得连接管路,其中所述连接管路的总长度与弯制后的火箭发动机管路的总长度一致；检验所述连接管路的质量,并进行压力试验；在质量及压力试验合格后,按照预设形状对所述连接管路进行一体化弯曲,获得火箭发动机管路。本发明的火箭发动机管路的制备方法、火箭发动机管路及发动机,通过改变管路和管路连接件的加工工艺,降低了工艺难度,提高了生产效率,且可以改善火箭发动机管路产品的质量。(The invention provides a preparation method of a rocket engine pipeline, a rocket engine pipeline and an engine. The preparation method comprises the following steps: a pipeline and a pipeline connector; fixing the pipeline connecting piece at the end part of the pipeline to obtain a connecting pipeline, wherein the total length of the connecting pipeline is consistent with that of the bent rocket engine pipeline; inspecting the quality of the connecting pipeline, and performing a pressure test; and after the quality and pressure tests are qualified, integrally bending the connecting pipeline according to a preset shape to obtain the rocket engine pipeline. According to the preparation method of the rocket engine pipeline, the rocket engine pipeline and the engine, the processing technology of the pipeline and the pipeline connecting piece is changed, the technology difficulty is reduced, the production efficiency is improved, and the quality of the rocket engine pipeline product can be improved.)
1. A method for preparing a rocket engine pipeline is characterized by comprising the following steps:
providing a pipeline and a pipeline connecting piece;
fixing the pipeline connecting piece at the end part of the pipeline to obtain a connecting pipeline, wherein the total length of the connecting pipeline is consistent with that of the bent rocket engine pipeline;
inspecting the quality of the connecting pipeline, and performing a pressure test;
and after the quality and pressure tests are qualified, integrally bending the connecting pipeline according to a preset shape to obtain the rocket engine pipeline.
2. A method of manufacturing a rocket engine conduit according to claim 1, wherein securing the conduit-connecting piece at the end of the conduit is specifically: and connecting pipeline connecting pieces at two ends of the pipeline in a welding manner.
3. A method of manufacturing a rocket engine conduit according to claim 2, wherein welding conduit connectors to both ends of the conduit comprises: respectively clamping the pipeline connecting piece and the pipeline, and enabling the end parts to be welded of the pipeline connecting piece and the pipeline to be tightly attached to each other;
fixing a welding head of a welding device in a position close to the end to be welded, an
And synchronously rotating the pipeline connecting piece and the pipeline, and starting the welding device to complete the welding of the end to be welded by the welding device.
4. A method of manufacturing rocket engine conduits according to claim 1, wherein said verifying the quality of said connecting conduits comprises:
performing ball passing inspection on the connecting pipeline to verify the medium circulation capacity of the connecting pipeline; and
and carrying out X-ray inspection on the connecting pipeline to ensure no damage to the interior of the product.
5. A method of manufacturing rocket engine conduits according to claim 1, further comprising, between verifying the quality of said connecting conduits and performing pressure tests: and carrying out acid washing and passivation treatment on the connecting pipeline.
6. A method of manufacturing a rocket engine pipeline according to claim 1, wherein the integrally bending the connecting pipeline according to a preset shape after passing the quality and pressure test to obtain the rocket engine pipeline comprises:
and integrally bending the connecting pipeline according to the bending radius R, the length Y of the straight line section, the bending angle B and the torsion angle C of each part of the rocket engine pipeline to obtain the final rocket engine pipeline.
7. A method of making a rocket engine conduit as recited in claim 1, further comprising: and bending the connecting pipeline for multiple times, and checking whether the size of the bent connecting pipeline is qualified or not after bending the connecting pipeline every time until the size requirement of the final rocket engine pipeline is met.
8. A method of manufacturing a rocket engine pipeline according to claim 1, wherein after the quality and pressure tests are qualified, the connecting pipeline is integrally bent according to a preset structure, and after the rocket engine pipeline is obtained, the method comprises:
and polishing, cleaning and drying the obtained rocket engine pipeline.
9. A rocket motor conduit prepared by the method of any one of claims 1 to 8.
10. An engine comprising a rocket engine conduit as recited in claim 9.
Technical Field
The invention relates to the technical field of engine pipelines, in particular to a preparation method of a rocket engine pipeline, a rocket engine pipeline and an engine.
Background
The pipe is an indispensable component of the rocket engine as a transport device for a working medium such as gas or liquid in the rocket engine. Generally, in order to ensure that a rocket engine pipeline is better applied to a rocket engine, the rocket engine pipeline is required to have the characteristics of light weight, easiness in processing, low cost and the like.
In some rocket engines in service, the rocket engine lines are made up of lines and line connections. The pipeline connecting piece is a structure connected with the corresponding position of the engine, and the pipeline provides a channel for conveying liquid media and gas media. In the existing pipeline production process, the pipeline is firstly bent, and then the pipeline connecting piece is fixedly connected with the pipeline, so that the process is complex, the production period is long, and the production progress of pipeline products is seriously influenced.
It is urgently needed to design a pipeline preparation method which is simple in process, reliable in product and short in production period, so that the pipeline production efficiency is further improved, and the pipeline production cost is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a preparation method of a rocket engine pipeline, the rocket engine pipeline and an engine, so that the pipeline production efficiency is improved, and the production cost is reduced.
One aspect of the present invention provides a method for manufacturing a rocket engine pipeline, comprising: providing a pipeline and a pipeline connecting piece; fixing the pipeline connecting piece at the end part of the pipeline to obtain a connecting pipeline, wherein the total length of the connecting pipeline is consistent with that of the bent rocket engine pipeline; inspecting the quality of the connecting pipeline, and performing a pressure test; and after the quality and pressure tests are qualified, integrally bending the connecting pipeline according to a preset shape to obtain the rocket engine pipeline.
In one embodiment, fixing the pipeline connector at the end of the pipeline is embodied as: and connecting pipeline connecting pieces at two ends of the pipeline in a welding manner.
In one embodiment, welding the tubing connection at both ends of the tubing comprises: respectively clamping the pipeline connecting piece and the pipeline, and enabling the end parts to be welded of the pipeline connecting piece and the pipeline to be tightly attached to each other; and fixing a welding head of a welding device at a position close to the end part to be welded, synchronously rotating the pipeline connecting piece and the pipeline, and starting the welding device to finish welding the end part to be welded by the welding device.
In one embodiment, said verifying the quality of said connecting line comprises: performing ball passing inspection on the connecting pipeline to verify the medium circulation capacity of the connecting pipeline; and carrying out X-ray inspection on the connecting pipeline to ensure that the interior of the product is not damaged.
In one embodiment, the method further comprises the following steps between the step of checking the quality of the connecting pipeline and the step of performing pressure test: and carrying out acid washing and passivation treatment on the connecting pipeline.
In one embodiment, after the quality and pressure test is qualified, integrally bending the connecting pipeline according to a preset shape to obtain the rocket engine pipeline comprises: and integrally bending the connecting pipeline according to the bending radius R, the length Y of the straight line section, the bending angle B and the torsion angle C of each part of the rocket engine pipeline to obtain the final rocket engine pipeline.
In one embodiment, the method of manufacturing a rocket engine pipeline further comprises: and bending the connecting pipeline for multiple times, and checking whether the size of the bent connecting pipeline is qualified or not after bending the connecting pipeline every time until the size requirement of the final rocket engine pipeline is met.
In one embodiment, after the quality and pressure tests are qualified, the integrally bending the connecting pipeline according to a preset structure to obtain the rocket engine pipeline includes: and polishing, cleaning and drying the obtained rocket engine pipeline.
In another aspect, the invention provides a rocket engine pipeline, which is prepared by the preparation method of the rocket engine pipeline.
In a further aspect the invention provides an engine comprising a rocket engine line as described above.
According to the preparation method of the rocket engine pipeline, the rocket engine pipeline and the engine, the processing technology of the pipeline and the pipeline connecting piece is changed, the technology difficulty is reduced, the production efficiency is improved, and the pipeline production cost is reduced, so that the competitiveness of related products in the commercial aerospace market is improved.
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 flow chart of a method for manufacturing a rocket engine pipeline according to an embodiment of the present invention.
FIG. 2 is a flow chart of an automatic welding process for rocket engine piping according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a rocket engine pipeline welded with the pipeline in a straight pipe state according to an embodiment of the invention.
FIG. 4 is a schematic view of a mechanism of a rocket engine after bending the pipeline according to an embodiment of the present invention.
Fig. 5 and 6 are schematic structural views of a pipeline connector according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.
For example, in a process for preparing rocket engine piping, the piping must first be bent. And (3) reserving filing and repairing allowance at two ends of the pipeline during bending, then performing repairing and positioning, and finally forming the pipeline and the pipeline connecting piece into a whole by welding to finish the pipeline manufacturing.
After the pipeline and the pipeline connecting piece are welded, X-ray radiographic inspection, acid cleaning passivation, hydraulic pressure and air pressure tests and the like are required. Because rocket engine pipeline space trend is complicated, the restriction of spatial structure after the pipeline is made can bring inconvenience for work such as X ray radiographic inspection, pickling passivation, hydraulic pressure air test, and welding and hydraulic pressure air test can make the pipeline take place to warp simultaneously, influence the assembly precision, need to carry out the pipeline appearance correction many times, production efficiency is low.
One aspect of the invention provides a method for manufacturing a rocket engine pipeline. Referring to fig. 1, the preparation method comprises:
s1 provides a pipeline and a pipeline connection.
The pipeline is a channel for the liquid medium or the gas medium to flow through, and the pipeline connecting piece is arranged at the end part of the pipeline and is used for being connected with the corresponding part of the engine. Because rocket engine pipelines need to avoid relevant structures when being arranged on an engine, the pipelines are usually provided with more than 3 bends.
S2, fixing the pipeline connecting piece at the end of the pipeline to obtain a connecting pipeline, wherein the total length of the connecting pipeline is consistent with that of the bent rocket engine pipeline.
For example, the two ends of the pipe may be mechanically connected or welded to pipe connectors, respectively, which may be plugged into corresponding parts of the engine system.
In the step, the pipeline is welded with the pipeline connecting piece before bending, so that the pipeline and the pipeline connecting piece can be automatically welded easily. For example, an automatic welding of a pipe to a pipe connection can be achieved by the following steps:
s21: respectively clamping the pipeline connecting piece and the pipeline, and enabling the end parts to be welded of the pipeline connecting piece and the pipeline to be tightly attached to each other;
s22: and fixing a welding head of a welding device at a position close to the end part to be welded, synchronously rotating the pipeline connecting piece and the pipeline, and starting the welding device to finish welding the end part to be welded by the welding device. Fig. 3 illustrates a rocket engine pipeline structure after the
It should be noted that, if the pipeline is bent first, it is difficult to clamp the pipeline connector and the pipeline and weld them in a synchronous rotation manner, because the swept range of the bent pipeline in the rotation process is too large, and the requirements on the welding operation space and the rotating equipment are high.
In addition, the pipeline connecting piece and the to-be-welded part of the pipeline can be close to each other, and the welding part of the pipeline connecting piece and the to-be-welded part of the pipeline can be welded by rotating the welding head at a constant speed.
S3, the quality of the connecting pipeline is checked, and a pressure test is carried out.
For example, verifying the quality of the connecting line may include: performing ball passing inspection on the connecting pipeline to verify the medium circulation capacity of the connecting pipeline; and carrying out X-ray inspection on the connecting pipeline to ensure that the interior of the product is not damaged.
According to the preparation method provided by the embodiment of the invention, the ball passing inspection and the pressure test are carried out before the pipeline is bent, so that the operation complexity of the ball passing inspection is greatly reduced, the deformation of the pipeline caused by the pressure test can be avoided, and the quality of a final product is improved.
For example, it may also be included between verifying the quality of the connecting line and performing a pressure test: and carrying out acid washing and passivation treatment on the connecting pipeline.
And S4, after the quality and pressure tests are qualified, integrally bending the connecting pipeline according to a preset shape to obtain the rocket engine pipeline.
For example, after the quality and pressure tests are qualified, the connecting pipeline is integrally bent according to a preset shape, and the obtaining of the rocket engine pipeline comprises the following steps: and integrally bending the connecting pipeline according to the bending radius R, the length Y of the straight line section, the bending angle B and the torsion angle C of each part of the rocket engine pipeline to obtain the final rocket engine pipeline. For example, the final product of the rocket motor pipeline has a plurality of bending parts such as 1, 2, 3, 4 ┄, etc., and the bending parts can be bent in sequence according to the process parameters of each bending part.
For example, the bending order of the respective bent portions may be arranged according to the bending radius of the final product, the bending angle as a first priority, the bending angle as a second priority, the torsion angle as a third priority, and the distance from the adjacent bent portion as a fourth priority. First, the sizes of the first priorities of the bending parts are compared, and the bending is prioritized as the bending angle is larger. If the first priority difference is small, for example, the difference is within 5%, the bending angle of the second priority is considered, and the bending processing is performed with higher priority if the bending angle is larger. And the parameters of other priorities are analogized in turn. By distinguishing the bending sequence according to the priorities represented by different process parameters, the spatial interference in the bending process can be avoided, the bending process of the pipeline is optimized, the sufficient recovery and adaptation time is given to the pipeline, and the bending effect of the final product is improved.
According to the preparation method of the rocket engine pipeline, the pipeline is connected with the pipeline connecting piece, and the pipeline is integrally bent after being qualified through inspection, so that the preparation method has at least the following advantages: firstly, the connection of the pipeline and the pipeline connecting piece can be facilitated. Compared with the existing steps, the quality inspection and the pressure test of the rocket engine pipeline can be facilitated. And thirdly, the early-stage process requirement of the pipeline can be reduced, and the deformation condition of the pipeline caused by later-stage inspection and test under the condition of bending can be avoided.
In the above embodiment, the method for manufacturing a rocket engine pipeline further includes: and bending the connecting pipeline for multiple times, and checking whether the size of the bent connecting pipeline is qualified or not after bending the connecting pipeline every time until the size requirement of the final rocket engine pipeline is met. Furthermore, the bending parts can be respectively bent, and when the size of a certain bending preparation part is not equal to the preset size after the bending part is bent for one time, the bending part far away from the bending part can be bent at first to ensure that the bending part has enough time to adapt to the deformation after bending, so that the quality of the rocket engine pipeline is improved without affecting the bending efficiency.
After the quality and pressure test is qualified, the connecting pipeline is integrally bent according to a preset structure, and the method further comprises the following steps of: and polishing, cleaning and drying the obtained rocket engine pipeline.
The above embodiments may be combined with each other with corresponding technical effects.
In another aspect, the invention provides a rocket engine pipeline, which is prepared by the preparation method of the rocket engine pipeline. As shown in fig. 4-6, the rocket engine pipeline comprises a
In a further aspect the invention provides an engine comprising a rocket engine line as described above.
According to the preparation method of the rocket engine pipeline, the rocket engine pipeline and the engine, the processing technology of the pipeline and the pipeline connecting piece is changed, the technology difficulty is reduced, the production efficiency is improved, and the pipeline production cost is reduced, so that the competitiveness of related products in the commercial aerospace market is improved.
The foregoing is merely an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principle of the present invention should fall within the protection scope of the present invention.
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