CN119914439B - Diffuser processing tool and processing method - Google Patents
Diffuser processing tool and processing method Download PDFInfo
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- CN119914439B CN119914439B CN202510407037.4A CN202510407037A CN119914439B CN 119914439 B CN119914439 B CN 119914439B CN 202510407037 A CN202510407037 A CN 202510407037A CN 119914439 B CN119914439 B CN 119914439B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The application relates to the technical field of rocket engine tests and discloses a diffuser processing tool and a processing method, wherein the diffuser processing tool comprises an annular plate structure provided with an opening, a diffuser and a diffuser, wherein the annular plate structure is provided with the opening, and the diameter of the outer wall is changed by adjusting the width of the opening so that the outer wall is attached to an inner cylinder of the diffuser; the strain measuring structure is arranged on the annular plate structure, initial strain of the annular plate structure along the direction perpendicular to the central axis of the annular plate structure is obtained, time intervals among the longitudinal ribs, the outer cylinder and the reinforcing ring ribs are sequentially arranged on the inner cylinder, the diameter of the outer wall of the annular plate structure is changed by adjusting the width of the opening, and the strain of the annular plate structure obtained by the strain measuring structure along the direction perpendicular to the central axis of the annular plate structure is ensured to be identical with the initial strain. The application monitors the strain of the annular plate structure in real time through the strain measuring structure, combines with the adjustment of the opening width, prevents the deformation of the thin-wall inner cylinder, and ensures the shape surface precision of the diffuser.
Description
Technical Field
The invention relates to the technical field of rocket engine tests, in particular to a diffuser machining tool and a diffuser machining method.
Background
Rocket engines typically perform high-altitude simulation tests on high-altitude simulation test stands. The diffuser is one of the important core components of the high-altitude simulation test stand. In high-altitude simulation tests, the diffuser needs to withstand high-temperature fuel gas of 3000 ℃ or more generated by the rocket engine. To prevent the diffuser from being ablated by the high temperature gas, the diffuser is typically water cooled.
In order to improve the cooling effect of the wall surface of the diffuser, the thickness of the inner wall of the diffuser is smaller and smaller, the water pressure of the water cooling structure is also increased, the pressure of cooling water born by the diffuser is also higher and higher, the existing diffuser is difficult to process, and the shape surface precision of the diffuser is difficult to meet the aerodynamic performance requirement of rocket engine test.
Disclosure of Invention
In view of the above, the invention provides a diffuser processing tool and a processing method, which are used for solving the problems that the pressure of high-temperature fuel gas and the total temperature of fuel gas are continuously improved along with the continuous increase of the thrust of a rocket engine, the thickness of the inner wall of a diffuser is smaller and smaller, the water pressure of a water cooling structure is also continuously increased, the pressure of cooling water born by the diffuser is also higher and higher, the existing diffuser is difficult to process, and the shape surface precision of the diffuser is difficult to meet the requirement of the aerodynamic performance of a rocket engine test.
The invention provides a diffuser machining tool which is suitable for machining a diffuser, and comprises an inner cylinder and an outer cylinder which are sleeved at intervals, wherein a fuel gas channel is formed in the inner cylinder, the inner cylinder is connected with the outer cylinder through a plurality of longitudinal ribs which are arranged at intervals along the circumferential direction, annular spaces between the inner cylinder and the outer cylinder are separated by the longitudinal ribs to form a plurality of cooling water flow channels, the longitudinal ribs are arranged along the axial direction of the diffuser, reinforcing ring ribs are arranged around the periphery of the outer cylinder, and the diffuser machining tool comprises:
The annular plate structure is provided with an opening, and the diameter of the outer wall of the annular plate structure is changed by adjusting the width of the opening so that the outer wall of the annular plate structure is fitted into the inner cylinder, the central axis of the annular plate structure is parallel to the axis of the inner cylinder, and the thickness of the annular plate structure and the difference between the radius of the outer wall and the radius of the inner wall of the annular plate structure are both larger than 5 times of the thickness of the inner cylinder;
The strain measurement structure is arranged on the annular plate structure and is suitable for acquiring initial strain of the annular plate structure in the direction perpendicular to the central axis of the annular plate structure when the annular plate structure is installed in the inner cylinder, and acquiring strain of the annular plate structure in the direction perpendicular to the central axis of the annular plate structure in real time;
The diffuser processing frock is suitable for installing in proper order on the inner tube the period between indulge muscle, urceolus and the strengthening ring muscle, through adjusting open-ended width, changes the diameter of the outer wall of annular plate structure, ensures that the annular plate structure that the strain measurement structure obtained along the strain with annular plate structure central axis vertical direction the same with initial strain. The diffuser has the beneficial effects that by adopting the technical scheme, when the diffuser is processed, the inner cylinder is supported through the annular plate structure, then the longitudinal ribs, the outer cylinder and the reinforcing ring ribs are installed, the diffuser is convenient to process, the strain of the annular plate structure is monitored in real time through the strain measuring structure, the width of the opening is combined and adjusted, the deformation of the thin-wall inner cylinder is prevented, and therefore the shape surface precision of the whole diffuser is ensured.
Optionally, the strain measurement structure is located on the annular plate structure at a position opposite the opening. The strain measuring structure has the beneficial effects that by adopting the technical scheme, the strain measuring structure is arranged at the most sensitive position of the strain on the annular plate structure, so that the strain of the annular plate structure is sensitively, rapidly and accurately obtained, and the deformation of the inner cylinder is accurately and reliably prevented.
Optionally, the number of the annular plate structures is n, the number of the strain measurement structures is n, which are correspondingly arranged on the annular plate structures, wherein n is a natural number not smaller than 2, and the n annular plate structures are arranged in the inner cylinder at intervals and are attached to each other. The application has the beneficial effects that by adopting the technical scheme, the deformation control is carried out on the whole length direction along the inner cylinder, so that the inner cylinder is prevented from deforming.
Optionally, n openings are uniformly distributed about the axis of the diffuser. The application has the beneficial effects that by adopting the technical scheme, the deformation control is carried out reliably on the whole length direction and the circumferential direction of the inner cylinder at the same time, so that the inner cylinder is prevented from deforming.
Optionally, the n annular plate structures are arranged at equal intervals. The application has the beneficial effects that by adopting the technical scheme, the deformation control of the inner cylinder is more effective by uniformly arranging the annular plate structure.
Optionally, a force application adjusting structure is provided at the opening, the force application adjusting structure being adapted to adjust the width of the opening.
Optionally, the two opposite side walls at the opening are respectively provided with a mounting groove, and the force application adjusting structure is arranged in the two opposite mounting grooves. The application has the beneficial effects that by adopting the technical scheme, the force application adjusting structure is conveniently, reliably and firmly arranged by arranging the mounting groove.
Optionally, the strain measurement structure is a strain gauge, the strain gauge is arranged on the inner wall of the annular plate structure, and the force application adjusting structure is a jack.
The outer cylinder is formed by connecting a plurality of strip pieces in a surrounding mode, and the diameter of the outer wall of the annular plate structure is changed by adjusting the width of the opening in the time period between the installation of each longitudinal rib and the connection of each strip piece, so that the strain of the annular plate structure obtained by the strain measuring structure is identical to the initial strain. The application has the beneficial effects that by adopting the technical scheme, the strain of the annular plate structure is further monitored more accurately and reliably in real time, and the deformation of the thin-wall inner cylinder is prevented by combining with the adjustment of the width of the opening, so that the shape surface precision of the diffuser is ensured.
In a second aspect, the present invention further provides a diffuser processing method, and the diffuser processing tool includes:
Processing the inner cylinder;
Adjusting the width of the opening, and attaching and mounting the outer wall of the annular plate structure of the diffuser processing tool into the inner cylinder;
recording an initial strain along a direction perpendicular to a central axis of the annular plate structure by a strain measurement structure;
installing longitudinal ribs, welding the longitudinal ribs one by one when the longitudinal ribs are installed by welding, and welding the next longitudinal rib after the welded longitudinal ribs are cooled;
the width of the opening is adjusted, so that the strain of the annular plate structure obtained by the strain measurement structure along the direction vertical to the central axis of the annular plate structure is identical to the initial strain;
installing an outer cylinder;
the width of the opening is adjusted, so that the strain of the annular plate structure obtained by the strain measurement structure along the direction vertical to the central axis of the annular plate structure is identical to the initial strain;
Installing a reinforcing ring rib;
And adjusting and reducing the width of the opening, and dismantling the diffuser machining tool. The diffuser has the beneficial effects that by adopting the technical scheme, when the diffuser is processed, the inner cylinder is supported through the annular plate structure, then the longitudinal ribs, the outer cylinder and the reinforcing ring ribs are installed, the diffuser is convenient to process, the strain of the annular plate structure is monitored in real time through the strain measuring structure, the width of the opening is combined and adjusted, the deformation of the thin-wall inner cylinder is prevented, and therefore the shape surface precision of the whole diffuser is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of a diffuser according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a diffuser provided in an embodiment of the present invention;
FIG. 3 is a schematic view of a partially enlarged cross-section of a diffuser provided in an embodiment of the present invention;
fig. 4 is a schematic perspective view of a diffuser machining tool according to an embodiment of the present invention;
FIG. 5 is a schematic perspective view of a diffuser tooling assembly according to an embodiment of the present invention mounted to a diffuser;
fig. 6 is a schematic layout diagram of four diffuser tooling tools provided in an embodiment of the present invention.
Reference numerals illustrate:
1. An inner cylinder; 2, an outer cylinder, 3, a fuel gas channel, 4, a longitudinal rib, 5, a cooling water channel, 6, a reinforcing ring rib, 7, an annular plate structure, 8, an opening, 9, an outer wall, 10, a strain measuring structure, 11, a force application adjusting structure, 12, an inner wall, 13, a plate, 14 and a mounting groove.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In one embodiment of the diffuser tooling shown in fig. 1-6, the diffuser tooling is adapted to process a diffuser. The diffuser is used for a high-altitude simulation test of a rocket engine.
As shown in fig. 1 to 3, the diffuser comprises an inner cylinder 1 and an outer cylinder 2 which are sleeved at intervals, a fuel gas channel 3 is formed inside the inner cylinder 1, and high-temperature fuel gas generated by a rocket engine is suitable to flow in the fuel gas channel 3. The inner cylinder 1 is connected with the outer cylinder 2 through a plurality of longitudinal ribs 4 arranged at intervals along the circumferential direction, the annular spaces between the inner cylinder 1 and the outer cylinder 2 are separated by the plurality of longitudinal ribs 4 to form a plurality of cooling water flow passages 5, the longitudinal ribs 4 are arranged along the axis of the diffuser, reinforcing ring ribs 6 are arranged around the outer circumference of the outer cylinder 2, and particularly the reinforcing ring ribs 6 are welded on the outer cylinder 2. The outer cylinder 2 is a cone cylinder or a cylinder. The reinforcing ring rib 6 is used for reinforcing the rigidity of the outer cylinder 2 and the overall rigidity of the whole diffuser.
As shown in fig. 4 and 5, the diffuser machining fixture according to the present application includes at least one annular plate structure 7 provided with an opening 8 and a strain gauge structure 10.
The annular plate structure 7 is adapted to change the diameter of the outer wall 9 of the annular plate structure 7 by adjusting the width of the opening 8 such that the outer wall 9 of the annular plate structure 7 fits snugly into the inner barrel 1. The diameter of the outer wall 9 of the annular plate structure 7 is the same as the diameter of the gas channel 3. The central axis of the annular plate structure 7 is parallel to the axis of the inner cylinder 1, although the central axis of the annular plate structure 7 and the axis of the inner cylinder 1 may be collinear. The thickness of the annular plate structure 7 and the difference between the radius of the outer wall 9 and the radius of the inner wall 12 of the annular plate structure 7 are both larger than 5 times the thickness of the inner cylinder 1, i.e. the thickness of the annular plate structure 7 is larger than 5 times the thickness of the inner cylinder 1, and the difference between the radius of the outer wall 9 and the radius of the inner wall 12 of the annular plate structure 7 is also larger than 5 times the thickness of the inner cylinder 1. The strain measurement structure 10 is arranged on the annular plate structure 7, the strain measurement structure 10 being adapted to obtain an initial strain of the annular plate structure 7 in a direction perpendicular to a central axis of the annular plate structure 7 when mounted into the inner cylinder 1, and to obtain a strain of the annular plate structure 7 in a direction perpendicular to the central axis of the annular plate structure 7 in real time. The diffuser processing tool is suitable for sequentially installing the time period among the longitudinal ribs 4, the outer cylinder 2 and the reinforcing ring ribs 6 on the inner cylinder 1, and the diameter of the outer wall 9 of the annular plate structure 7 is changed by adjusting the width of the opening 8, so that the strain of the annular plate structure 7 acquired by the strain measuring structure 10 along the direction perpendicular to the central axis of the annular plate structure 7 is identical to the initial strain.
Further, as shown in fig. 4, the strain gauge structure 10 is located on the annular plate structure 7 at a position opposite to the opening 8.
Further, as shown in fig. 6, the number of the annular plate structures 7 is n, the number of the strain measurement structures 10 is n, which are correspondingly installed on the annular plate structures 7, wherein n is a natural number not smaller than 2, and the n annular plate structures 7 are arranged at intervals and attached in the inner cylinder 1. In fig. 6, the number of the annular plate structures 7 is 4.
Further, as shown in fig. 6, n openings 8 are uniformly distributed about the axis of the diffuser. That is, on the cross section of the diffuser, the included angle between the projections of two straight lines formed by connecting two adjacent openings 8 with the center of the diffuser respectively on the same cross section of the diffuser is 360/n degrees.
Further, n annular plate structures 7 are arranged at equal intervals. Specifically, an annular plate structure 7 may be installed every 100 mm.
Specifically, as shown in fig. 4, a force application adjusting structure 11 is provided at the opening 8, and the force application adjusting structure 11 is adapted to adjust the width of the opening 8.
Further, as shown in fig. 4 and 5, mounting grooves 14 are respectively provided on two opposite side walls of the opening 8, and the force application adjusting structure 11 is disposed in the two opposite mounting grooves 14.
Specifically, as shown in fig. 4, the strain measuring structure 10 is a strain gauge, the strain gauge is disposed on an inner wall 12 of the annular plate structure 7, and the force application adjusting structure 11 is a jack. The mounting groove 14 may be a rectangular recess for receiving a jack. The diameter of the outer wall 9 of the annular plate structure 7 becomes larger when the jack is extended, and the diameter of the outer wall 9 of the annular plate structure 7 becomes smaller when the jack is shortened. The attaching direction of the strain gauge is perpendicular to the central axis direction of the annular plate structure 7, and the strain gauge is used for detecting whether the annular plate structure 7 is deformed or not.
As shown in fig. 3, the outer cylinder 2 is formed by surrounding and connecting a plurality of plate members 13. The plate 13 is elongated. Further, by changing the diameter of the outer wall 9 of the annular plate structure 7 by adjusting the width of the opening 8 in the period between the installation of each longitudinal rib 4 and the connection of each strip piece 13, it is ensured that the strain of the annular plate structure 7 obtained by the strain measuring structure 10 is the same as the initial strain. The position where the strain gauge is attached is the position where the annular plate structure 7 is likely to generate the maximum strain, and is most sensitive to the deformation of the annular plate structure 7. When the thickness of the annular plate structure 7 reaches more than 80 mm, the radius difference between the inner wall 12 of the annular plate structure 7 and the outer wall 9 of the annular plate structure 7 also reaches more than 80 mm, and the annular plate structure 7 can be made of high carbon steel, so that the annular plate structure 7 has higher rigidity.
The application also provides a diffuser processing method, which is applied to the diffuser processing tool and comprises the following steps:
S1, processing the inner cylinder 1, wherein the inner cylinder 1 can be processed through a steel plate rolling and welding process, and the shapes, such as the diameter, the roundness of the section, the length and the like of the inner cylinder 1, meeting the design requirements can be ensured.
S2, adjusting the width of the opening 8, attaching the outer wall 9 of the annular plate structure 7 of the diffuser processing tool into the inner cylinder 1, specifically, adjusting and shortening the length of the jack, reducing the diameter of the outer wall 9 of the annular plate structure 7, attaching the annular plate structure 7 into the inner cylinder 1, adjusting and prolonging the length of the jack, and attaching the outer wall 9 of the annular plate structure 7 and the inner cylinder 1.
S3, recording initial strain along the direction perpendicular to the central axis of the annular plate structure 7 through the strain measurement structure 10;
S4, installing longitudinal ribs 4, wherein the longitudinal ribs 4 are specifically welded and installed on the periphery of the inner cylinder 1 and welded one by one. When the longitudinal ribs 4 are installed by welding, after the welded longitudinal ribs 4 are sufficiently cooled, the next longitudinal rib 4 is welded.
And S5, adjusting the width of the opening 8 to ensure that the strain of the annular plate structure 7 acquired by the strain measurement structure 10 along the direction perpendicular to the central axis of the annular plate structure 7 is the same as the initial strain, and further, after each longitudinal rib 4 is welded and installed, adjusting the length of the jack after the temperature of the welding seam is reduced to the ambient temperature to ensure that the strain of the annular plate structure 7 acquired by the strain measurement structure 10 along the direction perpendicular to the central axis of the annular plate structure 7 is the same as the initial strain until the installation of all the longitudinal ribs 4 is completed.
S6, installing the outer cylinder 2, and specifically, welding the plate 13 on every two adjacent longitudinal ribs 4 one by one.
And S7, adjusting the width of the opening 8 to ensure that the strain of the annular plate structure 7 acquired by the strain measurement structure 10 along the direction perpendicular to the central axis of the annular plate structure 7 is the same as the initial strain, and further, after each plate 13 is welded and installed and the temperature at the welding seam is reduced to the ambient temperature, adjusting the length of the jack to ensure that the strain of the annular plate structure 7 acquired by the strain measurement structure 10 along the direction perpendicular to the central axis of the annular plate structure 7 is the same as the initial strain until the installation of all the plate 13 is completed.
S8, installing the reinforcing ring rib 6, and specifically, installing the reinforcing ring rib 6 by a welding machine.
And S9, adjusting and reducing the width of the opening 8, dismantling the diffuser machining tool, and particularly, adjusting and shortening the length of the jack after the temperature of the welding line of the welding reinforcing ring rib 6 is reduced to the ambient temperature, and dismantling the diffuser machining tool.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (7)
1. The diffuser machining tool is suitable for machining a diffuser, and comprises an inner cylinder (1) and an outer cylinder (2) which are sleeved at intervals, wherein a fuel gas channel (3) is formed inside the inner cylinder (1), the inner cylinder (1) is connected with the outer cylinder (2) through a plurality of longitudinal ribs (4) which are arranged at intervals along the circumferential direction, the annular spaces between the inner cylinder (1) and the outer cylinder (2) are separated by the plurality of longitudinal ribs (4) to form a plurality of cooling water channels (5), the longitudinal ribs (4) are arranged along the axial direction of the diffuser, and reinforcing ring ribs (6) are arranged around the periphery of the outer cylinder (2), and the diffuser machining tool is characterized by comprising the following components:
At least one annular plate structure (7) provided with an opening (8), adapted to change the diameter of the outer wall (9) of the annular plate structure (7) by adjusting the width of the opening (8) such that the outer wall (9) of the annular plate structure (7) fits snugly into the inner cylinder (1), the central axis of the annular plate structure (7) being parallel to the axis of the inner cylinder (1), the thickness of the annular plate structure (7) and the difference between the radius of the outer wall (9) of the annular plate structure (7) and the radius of the inner wall (12) being greater than 5 times the thickness of the inner cylinder (1);
A strain measurement structure (10) arranged on the annular plate structure (7), wherein the strain measurement structure (10) is suitable for acquiring initial strain of the annular plate structure (7) in a direction perpendicular to the central axis of the annular plate structure (7) when the annular plate structure (7) is installed in the inner cylinder (1), and acquiring strain of the annular plate structure (7) in a direction perpendicular to the central axis of the annular plate structure (7) in real time;
The diffuser machining tool is suitable for sequentially mounting the longitudinal ribs (4), the outer cylinder (2) and the reinforcing ring ribs (6) on the inner cylinder (1), and the diameter of the outer wall (9) of the annular plate structure (7) is changed by adjusting the width of the opening (8), so that the strain of the annular plate structure (7) acquired by the strain measuring structure (10) along the direction perpendicular to the central axis of the annular plate structure (7) is identical to the initial strain;
-the strain measurement structure (10) is located on the annular plate structure (7) at a position opposite the opening (8);
The number of the annular plate structures (7) is n, the number of the strain measuring structures (10) is n which are correspondingly arranged on the annular plate structures (7), wherein n is a natural number which is not less than 2, and the n annular plate structures (7) are arranged at intervals and are attached in the inner cylinder (1);
The n openings (8) are uniformly distributed about the axis of the diffuser.
2. The diffuser machining tool according to claim 1, wherein n annular plate structures (7) are arranged at equal intervals.
3. Diffuser tooling according to claim 1 or 2, characterized in that a forcing adjustment structure (11) is provided at the opening (8), which forcing adjustment structure (11) is adapted to adjust the width of the opening (8).
4. A diffuser tooling according to claim 3, wherein mounting grooves (14) are provided in opposite side walls of the opening (8), respectively, and the forcing adjustment structure (11) is disposed in the opposite mounting grooves (14).
5. The diffuser machining tool according to claim 4, wherein the strain gauge structure (10) is a strain gauge, the strain gauge is arranged on an inner wall (12) of the annular plate structure (7), and the force application adjusting structure (11) is a jack.
6. The diffuser machining tool according to claim 1 or 2, wherein the outer cylinder (2) is formed by surrounding and connecting a plurality of plate members (13), and the annular plate structure (7) obtained by the strain measuring structure (10) is ensured to have the same strain as the initial strain by changing the diameter of the outer wall (9) of the annular plate structure (7) by adjusting the width of the opening (8) between the installation of each longitudinal rib (4) and the connection of each plate member (13).
7. A diffuser machining method using the diffuser machining tool according to any one of claims 1 to 6, comprising:
machining the inner cylinder (1);
adjusting the width of the opening (8), and attaching and mounting the outer wall (9) of the annular plate structure (7) of the diffuser processing tool into the inner cylinder (1);
Recording an initial strain in a direction perpendicular to the central axis of the annular plate structure (7) by means of a strain measurement structure (10);
Installing longitudinal ribs (4), welding the longitudinal ribs (4) one by one when the longitudinal ribs (4) are installed by welding, and welding the next longitudinal rib (4) after the welded longitudinal ribs (4) are cooled;
The width of the opening (8) is adjusted, so that the strain of the annular plate structure (7) acquired by the strain measuring structure (10) along the direction perpendicular to the central axis of the annular plate structure (7) is identical to the initial strain;
an outer cylinder (2) is installed;
The width of the opening (8) is adjusted, so that the strain of the annular plate structure (7) acquired by the strain measuring structure (10) along the direction perpendicular to the central axis of the annular plate structure (7) is identical to the initial strain;
installing a reinforcing ring rib (6);
And adjusting and reducing the width of the opening (8), and dismantling the diffuser machining tool.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202510407037.4A CN119914439B (en) | 2025-04-02 | 2025-04-02 | Diffuser processing tool and processing method |
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| CN202510407037.4A CN119914439B (en) | 2025-04-02 | 2025-04-02 | Diffuser processing tool and processing method |
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| US3961524A (en) * | 1975-05-06 | 1976-06-08 | The United States Of America As Represented By The Secretary Of The Interior | Method and apparatus for determining rock stress in situ |
| CN211639019U (en) * | 2019-11-22 | 2020-10-09 | 哈电集团（秦皇岛）重型装备有限公司 | Large-diameter thin-wall sleeve intensive perforated circular anti-deformation support |
| CN119084095A (en) * | 2024-11-07 | 2024-12-06 | 中国航发四川燃气涡轮研究院 | A flexible connection structure for large-size thin-wall exhaust diffuser |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6241762B1 (en) * | 1998-03-30 | 2001-06-05 | Conor Medsystems, Inc. | Expandable medical device with ductile hinges |
| WO2011082317A2 (en) * | 2009-12-31 | 2011-07-07 | Crane Nuclear, Inc. | Device for measuring strain in a component |
| CN113664755B (en) * | 2021-09-01 | 2023-04-14 | 江南造船(集团)有限责任公司 | Deformation control device and method for large steel cylinder structure |
| CN114991812B (en) * | 2022-05-11 | 2023-10-10 | 同济大学 | Segment tunnel longitudinal and transverse servo type prestress automatic control system |
| CN115121846B (en) * | 2022-09-01 | 2022-11-18 | 北京成立科技有限公司 | Aerospace engine casing machining device and method |
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2025
- 2025-04-02 CN CN202510407037.4A patent/CN119914439B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3961524A (en) * | 1975-05-06 | 1976-06-08 | The United States Of America As Represented By The Secretary Of The Interior | Method and apparatus for determining rock stress in situ |
| CN211639019U (en) * | 2019-11-22 | 2020-10-09 | 哈电集团（秦皇岛）重型装备有限公司 | Large-diameter thin-wall sleeve intensive perforated circular anti-deformation support |
| CN119084095A (en) * | 2024-11-07 | 2024-12-06 | 中国航发四川燃气涡轮研究院 | A flexible connection structure for large-size thin-wall exhaust diffuser |
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