Water-cooled waveguide rod for ultra-high temperature environment large deformation structure

Abstract

The application belongs to the field of hot strength test, and particularly relates to a water-cooled waveguide rod for a large-deformation structure in an ultrahigh-temperature environment. The water-cooled waveguide rod comprises: a supporting profile provided with a through mounting hole; a linear bearing fixedly installed in the mounting hole of the supporting profile; a front end of a shape-maintaining shell fixedly connected with the supporting profile, the front end of the shape-maintaining shell being provided with a limiting ring, and a rear end of the shape-maintaining shell being provided with an opening; a limiting snap ring arranged in the shape-maintaining shell, the limiting snap ring comprising a connecting interface, a limiting clamping plate, and a channel penetrating through the connecting interface and the limiting clamping plate, and the limiting clamping plate being capable of being limited by the limiting ring at the front end of the shape-maintaining shell; a waveguide rod comprising a waveguide section, a cooling section, a mounting section and a deformation coordination section connected in sequence; a spring arranged in the shape-maintaining shell, a front end of the spring abutting against the limiting clamping plate; an end cover connected with the rear end of the shape-maintaining shell, and the end cover abutting against a rear end of the spring. The application can realize damage signal conduction of a large-deformation structure in an ultrahigh-temperature environment.

Description

Technical Field

[0001] This application belongs to the field of thermal strength testing, and specifically relates to a water-cooled waveguide rod for large deformation structures in ultra-high temperature environments. Background Technology

[0002] Thermal intensity testing is a crucial step in the development of hypersonic vehicles. Ground-based thermal intensity testing allows for the simulation of the entire flight path of a hypersonic vehicle in advance, exposing defects in the structural design. During thermal intensity testing, the temperature at the test site can reach over 1000℃, making it impossible to apply damage monitoring techniques for test components in normal temperature environments.

[0003] Acoustic emission is a physical phenomenon in which an object rapidly releases energy, generating transient elastic waves. The generation of acoustic emission is closely related to the internal damage of materials; therefore, changes in acoustic emission signals can reflect the material's failure process, playing a role in detecting and predicting material failure. However, limited by the maximum operating temperature of sensors and coupling agents, acoustic emission technology has historically been unable to play a role in thermal strength testing.

[0004] Therefore, it is desirable to have a technical solution to overcome or at least mitigate one of the aforementioned defects of the prior art. Summary of the Invention

[0005] The purpose of this application is to provide a water-cooled waveguide rod for large deformation structures in ultra-high temperature environments, in order to solve at least one problem existing in the prior art.

[0006] The technical solution of this application is:

[0007] A water-cooled waveguide rod for large deformation structures in ultra-high temperature environments, comprising:

[0008] A support surface, wherein a through mounting hole is provided on the support surface;

[0009] A linear bearing, wherein the linear bearing is fixedly installed in the mounting hole of the support surface;

[0010] A shaped shell, the front end of which is fixedly connected to the supporting surface, the front end of which is provided with a limit ring and the rear end of which is provided with an opening;

[0011] A limiting ring is disposed in the shaped housing. The limiting ring includes a connecting interface, a limiting plate, and a channel passing through the connecting interface and the limiting plate. The limiting plate can be limited by the limiting ring at the front end of the shaped housing.

[0012] The waveguide includes a waveguide section, a cooling section, a mounting section, and a deformation-coordination section connected in sequence.

[0013] The front end of the waveguide segment is in contact with the structure under test;

[0014] The cooling section is equipped with a cooling passage;

[0015] The installation section is provided with an installation area, and an acoustic emission sensor is attached to the installation area;

[0016] The deformation coordination section is a hollow, smooth straight rod structure, and the deformation coordination section passes through the linear bearing and connects to the connection interface;

[0017] A spring is disposed in the shaped housing, and the front end of the spring abuts against the limiting plate;

[0018] An end cap is provided, which is connected to the rear end of the ribbed housing and abuts against the rear end of the spring.

[0019] In at least one embodiment of this application, the cooling passage of the cooling section is perpendicular to the axis of the waveguide rod, and a quick connector for cooling medium is provided on the cooling passage.

[0020] In at least one embodiment of this application, the mounting area of ​​the mounting section is provided with an acoustic emission sensor pasting platform and an unloading channel.

[0021] In at least one embodiment of this application, the waveguide is integrally machined from stainless steel.

[0022] In at least one embodiment of this application, a docking interface is provided on the support surface, the docking interface being used for connection with an external structure.

[0023] In at least one embodiment of this application, the supporting surface, the limiting ring, the shaped outer shell, and the end cap are all made of aluminum alloy.

[0024] In at least one embodiment of this application, the end cap includes a base and a webbing rod. The base is installed at the opening at the rear end of the webbing shell and abuts against the rear end of the spring. The webbing rod passes through the spring and is inserted into the channel.

[0025] The invention has at least the following beneficial technical effects:

[0026] The water-cooled waveguide rod of this application for large deformation structures in ultra-high temperature environments can realize the transmission of damage signals of large deformation structures in ultra-high temperature environments. When combined with an acoustic emission system, it can meet the full-time domain damage monitoring of large deformation structures in ultra-high temperature environments. Attached Figure Description

[0027] Figure 1 This is an overall schematic diagram of a water-cooled waveguide rod for a large deformation structure in an ultra-high temperature environment according to one embodiment of this application;

[0028] Figure 2 This is an exploded view of a water-cooled waveguide rod for a large deformation structure in an ultra-high temperature environment, according to one embodiment of this application.

[0029] Figure 3 This is a schematic diagram of a waveguide rod according to one embodiment of this application;

[0030] Figure 4 This is a schematic diagram of a limiting retaining ring according to one embodiment of this application;

[0031] Figure 5 This is a schematic diagram of an end cap according to one embodiment of this application.

[0032] in:

[0033] 1-Waveguide rod; 11-Waveguide section; 12-Cooling section; 13-Mounting section; 14-Deformation coordination section; 2-Supporting surface; 3-Linear bearing; 4-Limiting retaining ring; 41-Connecting interface; 42-Limiting retaining plate; 43-Channel; 5-Shaped housing; 6-Spring; 7-End cap; 71-Base; 72-Shaped rod. Detailed Implementation

[0034] 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 some, but not all, 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 creative 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.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0036] The following is in conjunction with the appendix Figures 1 to 5 This application will be described in further detail.

[0037] This application provides a water-cooled waveguide rod for large deformation structures in ultra-high temperature environments, including: a support profile 2, a linear bearing 3, a shape-fitting outer shell 5, a limiting retaining ring 4, a waveguide rod 1, a spring 6, and an end cap 7.

[0038] Specifically, such as Figure 1 As shown, a through mounting hole is provided on the support surface 2. The linear bearing 3 is a commercially available linear bearing, which is fixedly installed in the mounting hole of the support surface 2. The V-shaped housing 5 is cylindrical, and its front end is fixedly connected to the support surface 2. A limit ring is provided at the front end of the V-shaped housing 5, and an opening is provided at the rear end. The limit ring 4 is provided in the V-shaped housing 5. The limit ring 4 includes a connection interface 41, a limit plate 42, and a channel 43 that passes through the connection interface 41 and the limit plate 42. The connection interface 41 is used to provide an interface for connecting with the waveguide rod 1. The limit plate 42 is installed in the V-shaped housing 5 and can be limited by the limit ring at the front end of the V-shaped housing 5.

[0039] In a preferred embodiment of this application, a docking interface is provided on the support surface 2 for connecting with an external structure. The support surface 2 provides the docking interface between the water-cooled waveguide rod and the external structure, enabling the installation and fixation of the water-cooled waveguide rod. In this embodiment, the support surface 2, the limiting ring 4, and the V-shaped outer shell 5 are preferably all made of aluminum alloy.

[0040] Furthermore, the waveguide 1 is divided into four functional areas, including a waveguide section 11, a cooling section 12, a mounting section 13, and a deformation coordination section 14 connected in sequence. The waveguide section 11 is the direct transmission path for damage signals, and its front end is in direct contact with the structure under test. The cooling section 12 is provided with a cooling channel, through which a flowing cooling medium can be introduced to achieve an overall cooling effect. The mounting section 13 is provided with a mounting area where an acoustic emission sensor is attached. The deformation coordination section 14 is a hollow, smooth straight rod structure. The deformation coordination section 14 passes through a linear bearing 3 and connects to the connection interface 41. The axial movement displacement of the waveguide 1 can be realized through the linear bearing 3 and the limiting retaining ring 4 to meet the usage requirements of structures with large deformation.

[0041] In the preferred embodiment of this application, such as Figure 2As shown, the cooling passage of cooling section 12 is perpendicular to the axis of waveguide rod 1. A quick connector for cooling medium is provided on the cooling passage, through which cooling medium, such as cooling water, is introduced. In this embodiment, the mounting area of ​​mounting section 13 is provided with an acoustic emission sensor bonding platform and an unloading channel. The unloading channel is a through hole opened in mounting section 13, which communicates with the acoustic emission sensor bonding platform. When disassembling the acoustic emission sensor, the unloading rod passes through the through hole in mounting section 13 and applies a force towards the opening of the bonding platform to the acoustic emission sensor, thereby disassembling the acoustic emission sensor. Waveguide rod 1 is preferably machined from a single piece of stainless steel. Waveguide rod 1 enables the transmission of damage signals inside the structure, meets the requirements of ultra-high temperature environments through the water cooling channel, and meets the usage conditions of large deformation structures through the deformation coordination section 14.

[0042] Furthermore, spring 6 is a commonly used cylindrical compression spring, housed within the weir-shaped housing 5, with its front end abutting against the limiting plate 42; end cap 7 is connected to the rear end of the weir-shaped housing 5, and abuts against the rear end of spring 6. End cap 7 is preferably made of aluminum alloy. In this embodiment, as... Figure 4 As shown, the end cap 7 includes a base 71 and a weft rod 72. The base 71 is installed at the opening at the rear end of the weft-shaped outer shell 5 and abuts against the rear end of the spring 6. The weft rod 72 passes through the spring 6 and is inserted into the channel 43, through which the movement of the weft rod 72 within the end cap 7 is realized. The weft rod 72 is used to ensure that the spring 6 only undergoes axial deformation. Through the extension and retraction of the spring 6, a tight contact is achieved between the water-cooled waveguide rod and the structure under test. Through the structural design of the end cap 7, the extreme displacement and deformation direction of the spring 6 are limited.

[0043] This application discloses a water-cooled waveguide rod for large deformation structures in ultra-high temperature environments. The waveguide rod 1 transmits structural damage signals from the test area of ​​the specimen to the outside of the thermal field. A cooling channel is designed inside the waveguide rod 1 to ensure its normal operation in ultra-high temperature environments. The rear end of the waveguide rod 1 is a deformation coordination section 14, which passes through a linear bearing 3 and connects to a limiting ring 4. The linear bearing 3 is fixed on a support surface 2, which provides an external interface for the water-cooled waveguide rod. The limiting ring 4 and the upper spring 6 are sealed together within a three-dimensional shell 5, and sealed by an end cap 7. This application can transmit damage signals of large deformation structures in ultra-high temperature environments to the outside of the thermal field. Combined with an acoustic emission system, it can achieve full-time health monitoring of large deformation structures in ultra-high temperature environments during thermal strength tests.

[0044] The water-cooled waveguide rod of this application for a large deformation structure in an ultra-high temperature environment is assembled by welding the shaped shell 5 to the support surface 2; installing the linear bearing 3 into the support surface 2; passing the waveguide rod 1 through the linear bearing 3 and connecting it to the limiting ring 4; installing the spring 6 into the shaped shell 5; passing the shaped rod 72 of the end cap 7 through the spring 6, and connecting the end cap 7 to the shaped shell 5; and testing the motion mechanism of the water-cooled waveguide rod. When used in conjunction with an acoustic emission system, an acoustic emission sensor is attached to the acoustic emission sensor mounting platform of the waveguide rod 1; a quick connector for the cooling medium is installed on the cooling channel of the cooling section 12; the installation position of the water-cooled waveguide rod is determined, and the spring 6 is given a certain amount of deformation; it is connected and fixed to the structure outside the thermal field through the external docking interface on the support surface 2; the cooling pipe is connected to the quick connector for the cooling medium; the cooling medium is introduced; the acoustic emission system is connected; the acoustic emission signal is monitored in the entire time domain; and the acoustic emission sensor is removed after the test is completed.

[0045] This application presents a water-cooled waveguide rod for structures undergoing large deformation in ultra-high temperature environments. It integrates a waveguide system, a water-cooling structure, a support structure, and a deformation self-coordinating structure, enabling the transmission of acoustic emission signals from the structure under large deformation conditions in ultra-high temperature environments. This application breaks down the technical barriers between ultra-high temperature environments and acoustic emission monitoring, solves the problem of unmonitored internal structural damage in thermal strength tests, greatly expands the boundaries of thermal strength tests, and successfully couples acoustic emission structural health monitoring technology with thermal strength testing technology.

[0046] 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 water-cooled waveguide rod for large deformation structures in ultra-high temperature environments, characterized in that, include: Support surface (2), wherein a through mounting hole is provided on the support surface (2); A linear bearing (3) is fixedly installed in the mounting hole of the support surface (2); The shaped shell (5) is fixedly connected to the support surface (2) at its front end. The shaped shell (5) is provided with a limit ring at its front end and an opening at its rear end. A limiting ring (4) is disposed in the shaped shell (5). The limiting ring (4) includes a connection interface (41), a limiting plate (42), and a channel (43) passing through the connection interface (41) and the limiting plate (42). The limiting plate (42) can be limited by the limiting ring at the front end of the shaped shell (5). A waveguide (1) comprises a waveguide section (11), a cooling section (12), a mounting section (13), and a deformation-coordination section (14) connected in sequence. The front end of the waveguide segment (11) is in contact with the structure under test; The cooling section (12) is provided with a cooling passage; The mounting section (13) is provided with an mounting area, and an acoustic emission sensor is attached to the mounting area; The deformation coordination section (14) is a hollow, smooth straight rod structure. The deformation coordination section (14) passes through the linear bearing (3) and is connected to the connection interface (41). A spring (6) is disposed in the shaped housing (5), and the front end of the spring (6) abuts against the limiting plate (42); End cap (7) is connected to the rear end of the shaped housing (5) and abuts against the rear end of the spring (6).

2. The water-cooled waveguide rod for large deformation structures in ultra-high temperature environments according to claim 1, characterized in that, The cooling passage of the cooling section (12) is perpendicular to the axis of the waveguide rod (1), and a quick connector for cooling medium is provided on the cooling passage.

3. The water-cooled waveguide rod for large deformation structures in ultra-high temperature environments according to claim 2, characterized in that, The installation area of ​​the installation section (13) is provided with an acoustic emission sensor pasting platform and an unloading channel.

4. The water-cooled waveguide rod for large deformation structures in ultra-high temperature environments according to claim 1, characterized in that, The waveguide rod (1) is machined from stainless steel.

5. The water-cooled waveguide rod for large deformation structures in ultra-high temperature environments according to claim 1, characterized in that, The support surface (2) is provided with a docking interface, which is used to connect with an external structure.

6. The water-cooled waveguide rod for large deformation structures in ultra-high temperature environments according to claim 1, characterized in that, The supporting surface (2), the limiting ring (4), the shaped outer shell (5), and the end cap (7) are all made of aluminum alloy.

7. The water-cooled waveguide rod for large deformation structures in ultra-high temperature environments according to claim 1, characterized in that, The end cap (7) includes a base (71) and a weft rod (72). The base (71) is installed at the opening at the rear end of the weft shell (5) and the base (71) abuts against the rear end of the spring (6). The weft rod (72) passes through the spring (6) and is inserted into the channel (43).

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