CN115615700B - Double-deck machine casket test seat block structure of direct dismouting from culvert - Google Patents
Double-deck machine casket test seat block structure of direct dismouting from culvert Download PDFInfo
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- CN115615700B CN115615700B CN202211388531.3A CN202211388531A CN115615700B CN 115615700 B CN115615700 B CN 115615700B CN 202211388531 A CN202211388531 A CN 202211388531A CN 115615700 B CN115615700 B CN 115615700B
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- China
- Prior art keywords
- culvert
- plugging
- test seat
- sleeve
- rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
Abstract
The invention relates to the technical field of aero-engine test structure design, and discloses a double-layer casing test seat plugging structure which is directly disassembled and assembled from a culvert, which comprises plugging components inserted into a casing culvert test seat and an connotative test seat, wherein each plugging component comprises a plugging rod and a sleeve; the blocking rod comprises a rod part, and an expanding section and a sealing part which are arranged on the rod part; the sealing part is used for being in line contact sealing with the conical surface of the inner wall of the content test seat; the lower end of the sleeve is fixed with the connotative test seat in a threaded or clamping matching mode, and one end of the sleeve is in contact with the diameter expansion section of the blocking rod and used for compressing the blocking rod; the invention can meet the requirement of plugging the test seats on the culvert and the culvert casing, and the sleeve adopts movable sealing at the corresponding position of the culvert casing to compensate the thermal deformation incompatibility between the culvert casing and the culvert casing generated during the operation, in particular to meet the requirements of radial, axial and lateral movement of the sleeve and the plugging rod at the culvert casing.
Description
Technical Field
The invention relates to the technical field of test structure design of aero-engines, in particular to a double-layer casing test seat plugging structure which is directly disassembled and assembled from a culvert.
Background
According to the requirement for comparing performance parameters of a specific section of a main flow passage in the process of researching/troubleshooting an aero-engine, a test seat of an original installation sensed part on a casing needs to be plugged through a special plugging structure.
At present, the double-layer casing test seat plugging of the turbofan engine with the small bypass ratio mainly adopts the independent plugging design of an inner culvert and an outer culvert, and the design is simple in structure and reliable in sealing, but cannot be directly disassembled and assembled from the outer culvert under the rack environment, so that the engine needs to be disassembled from the outer culvert and then can plug the inner culvert, and the assembly and test cost is greatly increased. Therefore, from the viewpoint of controlling the development cost of the engine, it is urgently needed to design a double-layer casing test seat plugging structure which is directly disassembled and assembled from a bypass.
Disclosure of Invention
In view of the above, the present invention provides a double-layer casing test seat plugging structure directly detachable from a culvert, which not only can meet the requirement of plugging test seats on the culvert and the culvert casing, but also can compensate the thermal deformation incompatibility between the culvert casing and the culvert casing generated during the operation by using a movable seal at the corresponding position of the culvert casing by using a sleeve, and especially can meet the requirement of the radial, axial and lateral movement of the sleeve and a plugging rod at the culvert casing.
A double-layer casing test seat plugging structure directly dismounted from a culvert comprises plugging components inserted into a casing culvert test seat and an inner culvert test seat, wherein each plugging component comprises a plugging rod and a sleeve sleeved on the outer wall of the plugging rod;
the blocking rod comprises a rod part, and an expanding section and a sealing part which are arranged on the rod part; the sealing part is used for being in line contact sealing with the conical surface of the inner wall of the content test seat;
the lower end of the sleeve is fixed with the connotation test seat in a threaded or clamping matching mode, and one end of the sleeve is in contact with the expanding section of the blocking rod and is used for pressing the blocking rod;
the contact position of the sleeve and the inner wall of the mounting hole of the culvert test seat is movably sealed.
Further, the outer surface of the culvert testing seat is provided with an annular groove, a T-shaped floating seat capable of being penetrated by the sleeve is arranged in the annular groove, a mounting groove is formed in the outer wall position of the sleeve corresponding to the T-shaped floating seat, a sealing baffle ring is arranged in the mounting groove, and the sealing baffle ring is in contact sealing with the inner wall of the T-shaped floating seat.
Furthermore, the sealing baffle ring is formed by lapping two half baffle rings.
Furthermore, a half-and-half pressing plate used for limiting the T-shaped floating seat in the annular groove is arranged on the upper surface of the culvert testing seat; the two half-and-half pressing plates are fixed on the upper surface of the culvert test seat through bolts.
Furthermore, a damping bush is arranged between the outer wall of the blocking rod and the inner wall of the sleeve; the blocking rod is provided with a split pin capable of limiting the damping bush.
Furthermore, the blocking rod and the sleeve are both provided with lock wire holes for penetrating lock wires.
Furthermore, the plug rod is provided with an anti-rotation pin protruding in the radial direction of the plug rod at a position corresponding to the culvert test seat, and the inner wall of the culvert test seat is provided with a limit groove for the anti-rotation pin to extend into along the axial direction.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention not only can meet the plugging of the test seats on the culvert and culvert casings, but also can meet the requirement of the sleeves and the plugging rods on radial, axial and lateral movement at the culvert casings by adopting movable sealing at the corresponding positions of the culvert casings to compensate the inconsistent thermal deformation between the culvert casings and the culvert casings generated during working.
2. The plugging structure is simple in composition and clear in interface, a plugging rod (with a sealing baffle ring) is directly inserted into a plugging culvert test seat from a culvert test seat, a sleeve (with a damping bush) and the culvert test seat are screwed tightly by screw threads to compress the plugging rod, a T-shaped floating seat is lapped in an annular groove of the culvert test seat and is compressed by a half-and-half pressing plate, and finally, the structures such as a split pin and a locking wire are interlocked. The whole disassembly and assembly process is simple, convenient and quick (within 8min for medium skilled workers), the design defect and limitation that the inner-culvert plugging can be implemented at the rear of an outer casing of the engine and needs to be decomposed due to the existing inner-culvert and outer-culvert independent plugging design are overcome, and the outstanding problems that the replacement period is long, the comprehensive cost is high (extra occupation of assembly and rack resources) and the like are effectively solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a double-layer casing test socket plugging structure directly disassembled from a culvert in an embodiment;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic view of the installation of the connotative test socket, the sleeve and the blocking rod in the embodiment;
FIG. 4 is a schematic structural diagram of a sealing baffle ring in the embodiment;
FIG. 5 is a schematic structural view of a half-pressing plate in the embodiment;
wherein, 1, a culvert test seat; 2. a connotation test seat; 3. a sleeve; 4. a rod portion; 5. a diameter expanding section; 6. a sealing part; 7. an annular groove; 8. a T-shaped floating seat; 9. a sealing baffle ring; 10. pressing the plate into halves; 11. a damping bushing; 12. a cotter pin; 13. a lockwire hole; 14. an anti-rotation pin; 15. a limiting groove.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Examples
Referring to fig. 1-5, a double-layer casing test seat plugging structure directly dismounted from a culvert comprises plugging components inserted into a casing culvert test seat 1 and an inner culvert test seat 2, wherein each plugging component comprises a plugging rod and a sleeve 3 sleeved on the outer wall of the plugging rod;
the blocking rod comprises a rod part 4, and an expanding diameter section 5 and a sealing part 6 which are arranged on the rod part 4; the sealing part 6 is used for being in line contact sealing with the inner wall conical surface of the content test seat 2;
the lower end of the sleeve 3 is fixed with the connotative test seat 2 in a threaded or clamping matching mode, and one end of the sleeve 3 is in contact with the expanding section 5 of the blocking rod and used for compressing the blocking rod;
the contact position of the sleeve 3 and the inner wall of the mounting hole of the culvert test seat 1 is movably sealed.
In this embodiment, plugging structure's main part adopts stifled pole + sleeve 3 integrated design, and stifled pole, sleeve 3 insert from outer culvert test seat 1 hole, and 2 inner chambers of culvert test seat are stretched into to the sealing 6 of stifled pole, and sealing 6 and 2 inner walls of culvert test seat (have can with the conical surface of stifled pole sealing 6 contact) formation line seal structure, realize the shutoff to culvert test seat 2. The sleeve 3 is sleeved outside the plugging rod, the bottom end of the sleeve 3 is abutted against the expanding section 5 of the plugging rod, the sleeve 3 is screwed with the inner culvert test seat 2 through threads to tightly press the plugging rod, and the contact part of the sleeve 3 and the inner wall of the mounting hole of the outer culvert test seat 1 is movably sealed (floating seal), so that the plugging of the outer culvert test seat 1 is realized; the plug not only can meet the plugging of the test seats on the culvert and culvert casings, but also can meet the requirement of the sleeve 3 and the plug rod on radial, axial and lateral movement of the casings by adopting movable sealing at the corresponding position of the culvert casings to compensate the inconsistent thermal deformation generated during working. And this block structure constitutes simply, the interface is clear, stifled pole inserts shutoff content test seat 2 back from outer content test seat 1, sleeve 3 embolias and screws up in order to compress tightly stifled pole with content test seat 2 screw thread from stifled pole again, whole dismouting process is simple and convenient, swift, has avoidd the present interior, need that outer shutoff design of outer layer cartridge receiver of engine brought alone need decompose design defect and the restriction of content shutoff in the back, has effectively solved the change cycle length, the higher scheduling outstanding problem of combined cost.
In addition, when the plugging structure is installed in the culvert test seat 2, the installation structure which is easy to damage and omit and the like is not needed, so that the risks that locking wires are omitted during culvert assembly, the locking wires are damaged in the working process and enter a flow channel, the framework environment cannot be processed after the locking wires fail and the like are avoided, and the reliability of the plugging structure is improved.
The outer surface of the culvert testing seat 1 in the embodiment is provided with an annular groove 7, a T-shaped floating seat 8 which can be penetrated by the sleeve 3 is arranged in the annular groove 7, a mounting groove is arranged at the outer wall position of the sleeve 3 corresponding to the T-shaped floating seat 8, a sealing baffle ring 9 is arranged in the mounting groove, and the sealing baffle ring 9 is in contact sealing with the inner wall of the T-shaped floating seat 8. The diameter of the top of the T-shaped floating seat 8 is smaller than the inner diameter of the annular groove 7, the diameter of the bottom of the T-shaped floating seat 8 is smaller than the diameter of the mounting hole of the external culvert test seat 1, so that the T-shaped floating seat 8 can form floating seal together with the sealing baffle ring 9 arranged in the mounting groove of the sleeve 3 and the annular groove 7 of the external culvert test seat 1, and the sleeve 3 and the plugging rod can be ensured to float in the radial direction and the axial direction of the casing and along the lateral direction of the casing. The sealing baffle ring 9 in the embodiment is formed by overlapping two half baffle rings, so that the assembly and disassembly are convenient; moreover, the overlapping surface can be a bevel or a complementary rectangular overlap, so that the design can increase the contact area and ensure the sealing performance of the sealing baffle ring 9.
In order to ensure that the T-shaped floating seat 8 cannot fall out of the annular groove 7, the upper surface of the culvert testing seat 1 of the embodiment is provided with a half pressing plate 10 for limiting the T-shaped floating seat 8 in the annular groove 7; the two half pressing plates 10 are fixed on the upper surface of the culvert test seat 1 through bolts.
A damping bush 11 is arranged between the outer wall of the blocking rod and the inner wall of the sleeve 3; the blocking rod is provided with a split pin 12 which can limit the damping bush 11. The damper bush 11 is inserted between the stem and the sleeve 3 to increase the resonant frequency margin. In order to prevent the damping bush 11 from withdrawing during the working process, a cotter pin 12 is inserted into the damping bush 11 to lock the damping bush and the blocking rod with each other. In addition, in order to facilitate the installation of the damping bush 11 on the fixed locking, the ends of the sleeve 3 and the blocking rod far away from the content test seat 2 in the embodiment extend out of the content test seat 1.
The blocking rod and the sleeve 3 are both provided with lock wire holes 13 for the lock wires to penetrate through. In this embodiment, the locking screw penetrates through the locking screw hole 13 at the head part of the blocking rod and is mutually locked with the locking screw hole 13 at the head part of the sleeve 3 to form a ring, so that the sleeve 3 can reliably compress the blocking rod in the working process.
The anti-rotation pin 14 protruding in the radial direction of the blocking rod is arranged at the position corresponding to the culvert test seat 2 on the blocking rod in the embodiment, the limiting groove 15 allowing the anti-rotation pin 14 to extend into is axially formed in the inner wall of the culvert test seat 2, and the blocking rod is matched with the limiting groove 15 through the anti-rotation pin 14, so that the circumferential anti-rotation of the blocking rod can be realized.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. A double-layer casing test seat plugging structure directly dismounted from a culvert is characterized by comprising a plugging component inserted into a casing culvert test seat (1) and an inner culvert test seat (2), wherein the plugging component comprises a plugging rod and a sleeve (3) sleeved on the outer wall of the plugging rod;
the blocking rod comprises a rod part (4), and an expanding section (5) and a sealing part (6) which are arranged on the rod part (4); the sealing part (6) is used for being in line contact sealing with the conical surface of the inner wall of the connotative test seat (2);
the lower end of the sleeve (3) is fixed with the connotative test seat (2) in a threaded or clamping matching mode, and one end of the sleeve (3) is in contact with the diameter expansion section (5) of the blocking rod and used for compressing the blocking rod;
the sleeve (3) is movably sealed with the contact position of the inner wall of the mounting hole of the culvert testing seat (1).
2. The double-layer casing test seat plugging structure directly dismounted from culvert according to claim 1, characterized in that an annular groove (7) is arranged on the outer surface of the culvert test seat (1), a T-shaped floating seat (8) for the sleeve (3) to pass through is arranged in the annular groove (7), the sleeve (3) is provided with a mounting groove at the outer wall position corresponding to the T-shaped floating seat (8), a sealing baffle ring (9) is arranged in the mounting groove, and the sealing baffle ring (9) is in contact sealing with the inner wall of the T-shaped floating seat (8).
3. The double-layer casing test seat plugging structure directly disassembled and assembled from a culvert according to claim 2, wherein the sealing baffle ring (9) is formed by overlapping two half baffle rings.
4. The double-layer casing test seat plugging structure directly dismounted from the culvert according to claim 2, characterized in that the upper surface of the culvert test seat (1) is provided with a pair of half pressing plates (10) for limiting the T-shaped floating seat (8) in the annular groove (7); the two half pressing plates (10) are fixed on the upper surface of the culvert testing seat (1) through bolts.
5. The plugging structure of the double-layer casing test seat directly disassembled and assembled from a culvert according to claim 1, wherein a damping bushing (11) is arranged between the outer wall of the plugging rod and the inner wall of the sleeve (3); the blocking rod is provided with a cotter pin (12) capable of limiting the damping bush (11).
6. The plugging structure of a double-layer casing test seat directly disassembled and assembled from a culvert according to claim 1, wherein the plugging rod and the sleeve (3) are both provided with lock wire holes (13) for passing lock wires.
7. The double-layer casing test seat plugging structure directly dismounted from culvert according to claim 1, wherein the plugging rod is provided with an anti-rotation pin (14) protruding in the radial direction of the plugging rod at a position corresponding to the culvert test seat (2), and a limit groove (15) for the anti-rotation pin (14) to extend into is axially formed on the inner wall of the culvert test seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211388531.3A CN115615700B (en) | 2022-11-08 | 2022-11-08 | Double-deck machine casket test seat block structure of direct dismouting from culvert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211388531.3A CN115615700B (en) | 2022-11-08 | 2022-11-08 | Double-deck machine casket test seat block structure of direct dismouting from culvert |
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| Publication Number | Publication Date |
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| CN115615700A CN115615700A (en) | 2023-01-17 |
| CN115615700B true CN115615700B (en) | 2023-03-10 |
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| CN202211388531.3A Active CN115615700B (en) | 2022-11-08 | 2022-11-08 | Double-deck machine casket test seat block structure of direct dismouting from culvert |
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