CN216747571U - Acoustic emission sensor adapter installed on wall surface of aero-engine case - Google Patents
Acoustic emission sensor adapter installed on wall surface of aero-engine case Download PDFInfo
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- CN216747571U CN216747571U CN202220180095.XU CN202220180095U CN216747571U CN 216747571 U CN216747571 U CN 216747571U CN 202220180095 U CN202220180095 U CN 202220180095U CN 216747571 U CN216747571 U CN 216747571U
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Abstract
An acoustic emission sensor adapter installed on the wall surface of an aeroengine casing belongs to the technical field of aerospace and comprises a sensor adapter seat and a sensor fixing adapter bolt, wherein the sensor adapter seat comprises a cylindrical base body, a stepped hole is axially formed in the cylindrical base body, the stepped hole consists of a threaded hole and a through hole, the threaded hole is formed in one end of the cylindrical base body, a hole-free lug plate and a notch are formed in the other end of the cylindrical base body, the hole-free lug plate and the notch are arranged perpendicularly to each other, and the notch is communicated with the through hole; a sensor fixing adaptive bolt is screwed at the threaded hole of the sensor adaptive seat; the installation accuracy of the acoustic emission sensor is improved, the problems that the traditional acoustic emission adapter is only limited to be installed on a metal device, the installation area is large and the like are solved, and the acoustic emission adapter is suitable for the wall surface of the aircraft engine case.
Description
Technical Field
The utility model relates to an acoustic emission sensor adapter, in particular to an acoustic emission sensor adapter arranged on the wall surface of an aircraft engine casing, and belongs to the technical field of aerospace.
Background
As a typical rotating machine, an aero-engine, wherein a medium bearing works in complex environments such as high temperature, high rotating speed and high load, bearing failure faults easily occur, and the normal work and flight safety of the engine are seriously influenced. The method is particularly important for monitoring the state of the medium bearing of the aircraft engine, finds out the fault in time in the early stage of the fault, reduces the fault occurrence rate of the engine and prevents serious faults, and obviously has great significance. The acoustic emission is a novel nondestructive detection technology, has the characteristics of sensitive acquisition fault, wide frequency spectrum range, rich frequency components and the like, is applied to the health state monitoring of the rolling bearing, and can diagnose the early fault and the fault type of the rolling bearing. In order to exhibit the original performance of the acoustic emission sensor, it is necessary to mount the acoustic emission sensor on a measurement object so that the acoustic emission signal can be transmitted efficiently. The traditional installation mode of the acoustic emission sensor has a magnetic adsorption seat, a glue direct fixation part and a waveguide rod, the magnetic adsorption seat has the limitation of the material of the installation surface, the glue direct fixation part is easy to damage when being detached, the installation condition required by the installation mode of the waveguide rod is complex, and the traditional installation mode can not realize the installation of the acoustic emission sensor on the wall surface of the aeroengine casing. The installation of the acoustic emission sensor is one of the reasons for directly causing the accuracy of the acoustic emission signal, and the installation quality of the acoustic emission sensor directly influences the detection result, so the installation mode of the sensor is particularly important.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems of installation of the acoustic emission sensor, the utility model provides the acoustic emission sensor adapter installed on the wall surface of the casing of the aircraft engine, which is designed to meet the requirements of an acoustic emission lead breaking test, has an amplitude of 95-100dB, can meet the detection requirements of the acoustic emission sensor, and is beneficial to installation, convenience and disassembly.
In order to realize the purpose, the utility model adopts the following technical scheme:
an acoustic emission sensor adapter mounted on the wall surface of an aeroengine case comprises a sensor adapter seat and a sensor fixing adapter bolt, wherein the sensor adapter seat comprises a cylindrical base body, a stepped hole is axially formed in the cylindrical base body and consists of a threaded hole and a through hole, the threaded hole is formed in one end of the cylindrical base body, a hole-free lug plate and a notch are formed in the other end of the cylindrical base body, the hole-free lug plate and the notch are arranged perpendicularly and relatively, and the notch is communicated with the through hole; the sensor adapter is fixedly connected with the wall surface of the aero-engine casing through a double faced adhesive tape, the acoustic emission sensor is fixed through the torque wrench adjusting sensor fixing adapter bolt, and a lead breaking experiment is carried out to determine the adjusting range of the torque wrench, so that the detection requirement of the acoustic emission sensor is met.
The sensor adaptation seat is manufactured by adopting a 3D printing technology.
The utility model has the beneficial effects that:
the acoustic emission sensor adapter is arranged on the wall surface of the aero-engine case, improves the installation precision of an acoustic emission sensor, solves the problems that the traditional acoustic emission adapter is only limited to be installed on a metal device, is large in installation area and the like, and is suitable for the wall surface of the aero-engine case.
Drawings
FIG. 1 is a three-dimensional schematic view of a sensor adapter of the present invention;
FIG. 2 is a bottom view of the adapter of the sensor of the present invention;
FIG. 3 is a side view of a sensor adapter of the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
FIG. 5 is a three-dimensional schematic view of a sensor fixing adapter bolt according to the present invention;
FIG. 6 is a side view of a sensor mount adapter bolt of the present invention;
FIG. 7 is a top view of the sensor mount adapter bolt of the present invention.
FIG. 8 is a pictorial illustration of a sensor adapter of the present invention installed in an aircraft engine case;
1-sensor adapting seat, 2-sensor fixing adapting bolt, 3-threaded hole, 4-through hole, 5-notch and 6-imperforate lug plate.
Detailed Description
The utility model is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1-8, the acoustic emission sensor adapter mounted on the wall surface of the aeroengine casing comprises a sensor adapter seat 1 and a sensor fixing adapter bolt 2, wherein the sensor adapter seat 1 comprises a cylindrical base body, a stepped hole is axially formed in the cylindrical base body, the stepped hole is composed of a threaded hole 3 and a through hole 4, the threaded hole 3 is arranged at one end of the cylindrical base body, a hole-free lug plate 6 and a notch 5 are arranged at the other end of the cylindrical base body, the hole-free lug plate 6 and the notch 5 are arranged vertically, the notch 5 is communicated with the through hole 4, and the notch 5 is used for leading out a signal terminal at the output end of the acoustic emission sensor so as to be convenient for connecting a cable; the sensor adapter is characterized in that a sensor fixing adapter bolt 2 is screwed in the threaded hole 3 of the sensor adapter seat 1, the sensor adapter is fixedly connected with the wall surface of the aircraft engine case through German tesa double faced adhesive tape, the wall surface of the aircraft engine case is a titanium alloy wall surface, the acoustic emission sensor is installed in the through hole, the acoustic emission sensor is fixed through the torque wrench adjusting sensor fixing adapter bolt 2, and a lead breaking experiment is carried out to determine the adjusting range of the torque wrench, so that the detection requirement of the acoustic emission sensor is met.
The acoustic emission sensor adapter which is installed on the wall surface of the aero-engine case in a high-precision mode improves the installation precision of the acoustic emission sensor, solves the problems that the traditional acoustic emission adapter is only limited to be installed on a metal device, the installation area is large and the like, and is suitable for the wall surface of the aero-engine case. The adapter is fixedly connected with the wall surface of the aircraft engine casing through the German tesa double faced adhesive tape, the acoustic emission sensor is fixed through the fixed adapter bolt of the torque wrench adjusting sensor, the acoustic emission lead breaking test requirement is met, the adjusting range of the torque wrench is determined, and finally the detection requirement of the acoustic emission sensor is met.
The sensor adapting seat 1 is manufactured by adopting a 3D printing technology.
In the embodiment, the height of the sensor adapting seat 1 is 35mm, the outer diameter of the cylindrical base body is 28mm, the length of the sensor adapting seat 1 is 48mm, the height of the gap 5 is 22mm, the width of the gap is 9mm, the height of the through hole 4 is 30mm, the inner diameter of the through hole is 22mm, the aperture of the threaded hole 3 is 18mm, and the height of the threaded hole is 5 mm; the stud diameter of the sensor fixing adapter bolt 2 is 18 mm.
The torque wrench adjustment range must meet the following requirements:
(1) the acoustic emission lead-breaking test requirement is met, the amplitude reaches 95-100dB, and the detection standard of an acoustic emission sensor is met;
(2) the lower limit standard of the adjusting range of the torque wrench is that the amplitude reaches 95dB in a lead breaking test, and the upper limit standard of the adjusting range of the torque wrench is that the acoustic emission sensor adapter base 1 is completely fixed with the wall surface of the aircraft engine casing without looseness.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.
Claims (2)
1. The acoustic emission sensor adapter mounted on the wall surface of the aero-engine case is characterized by comprising a sensor adapting seat and a sensor fixing adapting bolt, wherein the sensor adapting seat comprises a cylindrical base body, a stepped hole is formed in the cylindrical base body along the axial direction, the stepped hole consists of a threaded hole and a through hole, the threaded hole is formed in one end of the cylindrical base body, a hole-free lug plate and a notch are formed in the other end of the cylindrical base body, the hole-free lug plate and the notch are arranged perpendicularly and relatively, and the notch is communicated with the through hole; the sensor adapter is fixedly connected with the wall surface of the aircraft engine casing through a double faced adhesive tape, the acoustic emission sensor is fixed through the torque wrench adjusting sensor fixing adapter bolt, and a lead breaking experiment is carried out to determine the adjusting range of the torque wrench, so that the detection requirement of the acoustic emission sensor is met.
2. The acoustic emission sensor adapter of claim 1, wherein: the sensor adaptation seat is manufactured by adopting a 3D printing technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220180095.XU CN216747571U (en) | 2022-01-24 | 2022-01-24 | Acoustic emission sensor adapter installed on wall surface of aero-engine case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220180095.XU CN216747571U (en) | 2022-01-24 | 2022-01-24 | Acoustic emission sensor adapter installed on wall surface of aero-engine case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216747571U true CN216747571U (en) | 2022-06-14 |
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ID=81916387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220180095.XU Active CN216747571U (en) | 2022-01-24 | 2022-01-24 | Acoustic emission sensor adapter installed on wall surface of aero-engine case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216747571U (en) |
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2022
- 2022-01-24 CN CN202220180095.XU patent/CN216747571U/en active Active
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