A sealing device for testing a mounting base

Abstract

This application belongs to the field of aero-engine technology, and specifically relates to a sealing device for a test mounting base. Three types of mounting bases are formed on a threaded hole seat in the combustion chamber casing. The infrared temperature measurement mounting base includes a mounting base, a floating gasket, and a cover plate. The mounting base includes a mounting head and a threaded section, the threaded section being screwed into the threaded hole of the threaded hole seat. The mounting base has a central hole, forming a first stepped surface and a second stepped surface. The floating gasket is mounted on the first stepped surface, and the cover plate is mounted on the second stepped surface. The test lead mounting base includes: a sleeve fitted into the central hole of the infrared temperature measurement mounting base, the upper end of the sleeve being connected to a lead nut via an external thread; the lower end of the sleeve has a flange formed by an increased diameter, the end face of the lead nut pressing against the upper surface of the cover plate, so that the flange of the sleeve engages with the inner surface of the combustion chamber casing; the lead nut has a central hole through which the lead wire passes; the sealing mounting base includes: replacing the lead nut with a top-sealing cap.

Description

Technical Field

[0001] This application belongs to the field of aero-engine technology, and specifically relates to a sealing device for a test mounting base. Background Technology

[0002] Accurately obtaining the operating temperature of aero-engine rotors is crucial for rotor structural strength design, rotor deformation control, and rotor-stator clearance design. The temperature testing of aero-engine rotors is significantly affected by the rotor's operating environment, posing a major technical challenge. On one hand, aero-engine rotors operate at high speeds, exceeding 10,000 r / min; on the other hand, they operate at high temperatures, with localized operating temperatures exceeding 1000℃ in high-pressure turbine rotors. Rotor temperature testing technology must withstand the stringent conditions of both high speed and high temperature.

[0003] Currently, the rotor temperature testing technologies used in domestic aero-engine research and development include: temperature-indicating paint temperature measurement, crystal temperature measurement, thermocouple temperature measurement, and infrared fiber optic temperature measurement.

[0004] According to the relevant arrangements, it is planned to repeatedly conduct crystal temperature measurement, infrared fiber optic temperature measurement, and full-process testing on a certain model. However, the combustion chamber section only has a full-process test mounting base, which cannot meet the requirements of crystal temperature measurement and infrared fiber optic temperature measurement technologies. Rearranging the test base will require a processing period, and the test base will also need to be sealed afterward.

[0005] The combustion chamber section only has a full-process test mounting base, which cannot meet the requirements of crystal temperature measurement and infrared fiber optic temperature measurement technologies; rearranging the test mounting base requires a processing cycle, and the test mounting base also needs to be sealed afterward. Summary of the Invention

[0006] To address the aforementioned issues, this application provides a sealing device for a test mounting base, wherein a threaded hole seat is provided on the combustion chamber casing, and three types of mounting bases are formed on the threaded hole seat: an infrared temperature measurement mounting base, a test lead mounting base, and a sealing mounting base;

[0007] The infrared temperature measuring mounting base includes a mounting base, a floating gasket, and a cover plate. The mounting base includes a mounting head and a threaded section. The threaded section is screwed into the threaded hole of the threaded hole seat. The mounting base has a central hole. The central hole is enlarged twice by the mounting head to form a first stepped surface and a second stepped surface. The floating gasket is installed on the first stepped surface, and the cover plate is installed on the second stepped surface. Both the floating gasket and the cover plate have a central hole that is compatible with the infrared thermometer.

[0008] The test lead mounting bracket includes: a sleeve that fits into the center hole of the infrared temperature measurement mounting bracket, with the upper end of the sleeve connected to the lead nut via an external thread; the lower end of the sleeve has a flange formed by an increased diameter, and the end face of the lead nut presses against the upper surface of the cover plate, so that the flange of the sleeve fastens against the inner surface of the combustion chamber casing; the lead nut has a center hole through which the lead passes.

[0009] The sealing mount includes: replacing the lead nut with a top-sealing plug.

[0010] Preferably, the upper surface of the cover plate is flush with the upper surface of the mounting base.

[0011] Preferably, the center hole of the floating gasket is smaller than the center hole of the cover plate.

[0012] Preferably, the diameter of the enlarged hole where the first step surface is located is larger than the outer diameter of the floating gasket, so as to reserve space for the radial movement of the floating gasket.

[0013] Preferably, a spacer is provided between the fastener and the combustion chamber casing, and the thickness of the spacer is adapted to the tilt of the combustion chamber casing.

[0014] Preferably, an elastic sealing sheet is pressed between the plug and the sleeve.

[0015] Preferably, the plug is cylindrical with a blind internal threaded hole.

[0016] Preferably, the bottom of the blind internal threaded hole of the plug has an annular groove for installing an elastic sealing plate.

[0017] The advantages of this invention are: 1) The infrared temperature measurement mounting base, test lead mounting base, and sealing base are completed in the same position, and corresponding tests can be carried out alternately. The structure is simple, easy to disassemble and assemble, saves time and economic costs, and improves work efficiency; 2) A double-layer sealing structure is designed, which is highly versatile and reliable. The floating sealing gasket design can also protect the infrared fiber optic temperature measurement device.

[0018] This invention can be used for subsequent related tests and sealing work of different models, and has broad application prospects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an infrared temperature measurement mounting base;

[0020] Figure 2 This is a schematic diagram of the test lead mounting bracket;

[0021] Figure 3 This is a schematic diagram of the sealing mounting base;

[0022] Figure 4 This is a schematic diagram of the elastic sealing sheet structure.

[0023] Figure 5This is a schematic diagram of the infrared temperature measurement mounting base. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0025] This application provides a sealing device for a test mounting base, wherein a threaded hole seat is provided on the combustion chamber casing, and three types of mounting bases are formed on the threaded hole seat: an infrared temperature measurement mounting base, a test lead mounting base, and a sealing mounting base;

[0026] The infrared temperature measuring mounting base includes a mounting base 1, a floating gasket 2, and a cover plate 3. The mounting base 1 includes a mounting head and a threaded section. The threaded section is screwed into the threaded hole of the threaded hole seat. The mounting base 1 has a central hole. The central hole is enlarged twice by the mounting head to form a first stepped surface and a second stepped surface. The floating gasket 2 is installed on the first stepped surface, and the cover plate 3 is installed on the second stepped surface. Both the floating gasket 2 and the cover plate 3 have a central hole that is compatible with the infrared thermometer.

[0027] The test lead mounting bracket includes: a sleeve 6 that fits into the center hole of the infrared temperature measuring mounting bracket; the upper end of the sleeve 6 is connected to the lead nut 4 via an external thread; the lower end of the sleeve 6 has a flange formed by an increased diameter; the end face of the lead nut 4 presses against the upper surface of the cover plate 3, so that the flange of the sleeve 6 fastens against the inner surface of the combustion chamber casing; the lead nut 4 has a center hole through which the lead passes.

[0028] The sealing mounting bracket includes: replacing the lead nut 4 with a top-sealing plug 7.

[0029] After machining threads, the casing test mounting base forms a threaded hole seat. This seat is used to mount infrared temperature measurement mounts for infrared fiber optic temperature measurement and crystal temperature measurement applications. Figure 1 As shown.

[0030] A test lead mounting bracket is installed on top of the infrared temperature measurement mounting bracket for full-process testing, such as... Figure 2 As shown.

[0031] Remove the lead nut, replace it with a plug and elastic sealing plate to complete the seal, and it can be used directly for whole machine testing and other work. Figure 3 , Figure 4 As shown.

[0032] The infrared temperature measurement mounting base, test lead mounting base, and sealing base are all located in the same position, allowing for alternating testing. The structure is simple, easy to assemble and disassemble, and saves time and effort.

[0033] In some alternative embodiments, the upper surface of the cover plate 3 is flush with the upper surface of the mounting base 1.

[0034] In some alternative implementations, the center hole of the floating gasket 2 is smaller than the center hole of the cover plate 3.

[0035] In some alternative embodiments, the diameter of the enlarged hole where the first step surface is located is larger than the outer diameter of the floating gasket 2, leaving space for the radial movement of the floating gasket 2.

[0036] In some alternative embodiments, a spacer 5 is provided between the snap-fit ​​edge and the combustion chamber casing, the thickness of which is adapted to the tilt of the combustion chamber casing.

[0037] In some alternative embodiments, a resilient sealing strip 8 is pressed between the plug 7 and the sleeve 6.

[0038] In some alternative embodiments, the plug 7 is a cylindrical shape with a blind internal threaded hole.

[0039] In some alternative embodiments, the bottom of the blind internal threaded hole of the plug 7 has an annular groove for mounting the resilient sealing strip 8.

[0040] The advantages of this invention are: 1. The infrared temperature measurement mounting base, test lead mounting base, and sealing base are completed in the same position, and corresponding tests can be carried out alternately. The structure is simple, easy to disassemble and assemble, saves time and economic costs, and improves work efficiency; 2. A double-layer sealing structure is designed, which is highly versatile and reliable. The floating sealing gasket design can also protect the infrared fiber optic temperature measurement device.

[0041] This invention can be used for subsequent related tests and sealing work of different models, and has broad application prospects.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A sealing device for testing mounting bases, characterized in that, A threaded hole seat is provided on the combustion chamber casing, and three types of mounting seats are formed on the threaded hole seat: infrared temperature measurement mounting seat, test lead mounting seat and sealing mounting seat; The infrared thermometer mounting base includes a mounting base (1), a floating gasket (2), and a cover plate (3). The mounting base (1) includes a mounting head and a threaded section. The threaded section is screwed into the threaded hole of the threaded hole seat. The mounting base (1) has a central hole. The central hole is enlarged twice by the mounting head to form a first step surface and a second step surface. The floating gasket (2) is installed on the first step surface, and the cover plate (3) is installed on the second step surface. Both the floating gasket (2) and the cover plate (3) have a central hole that is compatible with the infrared thermometer. The test lead mounting bracket includes: a sleeve (6) fitted into the center hole of the infrared temperature measuring mounting bracket, the upper end of the sleeve (6) being connected to the lead nut (4) by an external thread; the lower end of the sleeve (6) has a buckle formed by an increased diameter, the end face of the lead nut (4) pressing against the upper surface of the cover plate (3), so that the buckle of the sleeve (6) is fastened to the inner surface of the combustion chamber casing; the lead nut (4) has a center hole through which the lead passes; The sealing mount includes: replacing the lead nut (4) with a top-sealing plug (7).

2. The sealing device for testing the mounting base as described in claim 1, characterized in that, The upper surface of the cover plate (3) is flush with the upper surface of the mounting base (1).

3. The sealing device for testing the mounting base as described in claim 1, characterized in that, The center hole of the floating gasket (2) is smaller than the center hole of the cover plate (3).

4. The sealing device for testing the mounting base as described in claim 1, characterized in that, The diameter of the enlarged hole on the first step surface is larger than the outer diameter of the floating gasket (2), leaving space for the radial movement of the floating gasket (2).

5. The sealing device for testing the mounting base as described in claim 1, characterized in that, There is a pad (5) between the snap-fit ​​edge and the combustion chamber casing, and the thickness of the pad (5) is adapted to the tilt of the combustion chamber casing.

6. The sealing device for testing the mounting base as described in claim 1, characterized in that, An elastic sealing sheet (8) is pressed between the plug (7) and the sleeve (6).

7. The sealing device for testing the mounting base as described in claim 1, characterized in that, The plug (7) is a cylindrical shape with a blind internal thread hole.

8. The sealing device for testing the mounting base as described in claim 6, characterized in that, The bottom of the blind internal threaded hole of the plug (7) has an annular groove for installing an elastic sealing plate (8).

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