CN-122016551-A - In-situ thermogravimetry and corrosion thermal cycle testing device

CN122016551ACN 122016551 ACN122016551 ACN 122016551ACN-122016551-A

Abstract

The invention discloses an in-situ thermal weight and corrosion thermal cycle testing device, which relates to the technical field of thermal cycle testing devices and comprises a base, a reaction tube, a placing table and a heating movable furnace, wherein the base is provided with a heating chamber; the reaction tube is arranged horizontally, the axial direction of the reaction tube is parallel to the length extending direction of the base, and the object placing table is positioned in the reaction tube and used for fixing a sample to be tested. The heating movable furnace is arranged on the base along the axial sliding of the reaction tube, the heating movable furnace can enclose or separate from the reaction tube when sliding back and forth, the heating movable furnace is provided with a heating wire, and when the heating movable furnace encloses the reaction tube, the heating wire can heat a sample inside the reaction tube. According to the invention, the reaction tube is arranged in a horizontal manner, the heating movable furnace slides along the axial direction of the reaction tube to enclose or separate from the reaction tube, so that a test mode of static sample and moving temperature field is realized, the position of the sample is always fixed, the high-temperature heating zone and the cooling zone are switched only through the sliding heating movable furnace, and the test precision of the sample is high.

Inventors

WANG CHUANBIN
XU SHUPENG
PENG JIAN
WU JUNHAO
SHEN QIANG
ZHANG LIANMENG

Assignees

武汉理工大学

Dates

Publication Date: 20260512
Application Date: 20260319

Claims (10)

1. An in situ thermogravimetric and corrosive thermal cycle test device, comprising: A base; The reaction tube is arranged horizontally, and the axial direction of the reaction tube is parallel to the length direction of the base; a placing table which is positioned in the reaction tube and is used for fixing a sample to be tested, and The heating movable furnace is arranged on the base along the axial sliding of the reaction tube, the heating movable furnace can enclose or separate from the reaction tube when sliding reciprocally, the heating movable furnace is provided with a heating wire, and when the heating movable furnace encloses the reaction tube, the heating wire can heat a sample inside the reaction tube.
2. The in-situ thermal gravimetric and corrosive thermal cycle testing apparatus according to claim 1, wherein said heating movable furnace comprises a furnace body, a heating wire and a heat insulating layer, said heating wire is disposed on an inner wall of said furnace body, and said heat insulating layer is disposed on an outer wall of said furnace body.
3. The in-situ thermal gravimetric and corrosive thermal cycle testing apparatus according to claim 2, wherein said furnace body is arch-bridge-shaped, said base is provided with a sliding rail along a length extension direction thereof, and two sides of a bottom of said furnace body are slidably connected to said sliding rail.
4. The in-situ thermogravimetric and corrosive thermal cycle test apparatus of claim 3, wherein a central axis of said furnace body coincides with a central axis of said reaction tube.
5. The in-situ thermal gravimetric and corrosive thermal cycle testing apparatus according to claim 1, further comprising a rail motor and a rack, wherein one end of the rack is connected to the furnace body, the other end of the rack engages an output shaft of the rail motor, and the rail motor can drive the rack to reciprocate through engagement when driving the output shaft to rotate, so that the rack drives the furnace body to reciprocate.
6. The in-situ thermogravimetric and corrosion thermal cycle testing device according to claim 1, further comprising a sample weighing and supporting assembly, wherein the sample weighing and supporting assembly comprises a weighing sensor, a cantilever structure and a sample fixing clamp, the weighing sensor is arranged in a normal temperature area at one end of the reaction tube, one end of the cantilever is mechanically connected with the weighing sensor, the other end of the cantilever extends into the reaction tube along the axis direction of the reaction tube and is connected with the sample fixing clamp, and the sample fixing clamp is used for fixing a sample to be tested and keeping the spatial position of the sample unchanged in the whole testing process.
7. The in-situ thermogravimetric and corrosive thermal cycle test device according to claim 6, wherein an end of said reaction tube adjacent to said load cell has a water-cooled insulating layer.
8. The in-situ thermogravimetric and corrosive thermal cycle test device according to claim 6, further comprising a gas supply protection unit, wherein the gas supply protection unit comprises a gas inlet pipe and an isolation gas path, the gas inlet pipe is used for introducing simulated air or corrosive gas into the reaction tube, and the isolation gas path is arranged in a connection area between the weighing sensor and the reaction tube to block diffusion of the corrosive gas to the weighing area.
9. The in-situ thermal gravimetric and corrosive thermal cycle testing apparatus according to claim 1, further comprising a control unit, said control unit comprising a main controller and a temperature sensor, said main controller being connected to said temperature sensor and said heating wire, said temperature sensor being disposed inside said reaction tube.
10. The in-situ thermogravimetric and corrosive thermal cycle test device according to claim 9, further comprising an inert gas pipe, wherein an output end of said inert gas pipe is connected to an inlet of said reaction pipe, said inert gas pipe has an on-off valve, and said on-off valve is connected to said main controller.

Description

In-situ thermogravimetry and corrosion thermal cycle testing device Technical Field The invention relates to the technical field of thermal cycle testing devices, in particular to an in-situ thermal weight and corrosion thermal cycle testing device. Background Along with the rapid development of high-end industrial fields such as aeroengines, gas turbines, nuclear engineering, petrochemical industry and the like, the application requirements of key hot-end component materials under extreme working conditions are increasing. These materials need to withstand high temperature oxidation and erosion by corrosive atmospheres for long periods of time, and also experience severe cold and hot alternating shocks from frequent start-up and shut-down. In this process, the mass change of the material is the most direct and critical index to evaluate its corrosion kinetics, oxide film growth law, and coating spalling failure behavior. In order to accurately simulate the actual service condition and realize real-time and continuous monitoring of the quality evolution of the material in the hot corrosion process, it is particularly important to develop professional and reliable high-temperature corrosion performance test equipment, so that the method is not only beneficial to optimizing the component design of a new material and improving the high-temperature corrosion resistance of the material, but also provides important data support for life prediction and failure mechanism research of the material. The conventional high-temperature corrosion and thermogravimetric testing equipment has some defects in the use process, for example, a sample needs to move for a long distance through a hanging wire or a flexible connecting piece in the testing process, and is easily influenced by mechanical vibration, air flow disturbance and thermal stress coupling action when the sample repeatedly enters and exits a reaction zone, so that the fluctuation of a weighing signal is obvious, and stable, continuous and high-precision quality change data are difficult to obtain. Disclosure of Invention The invention aims to overcome the defects of the prior art, provides an in-situ thermogravimetric and corrosion thermal cycle testing device, and solves the technical problems that in the prior art, high-temperature corrosion and thermogravimetric testing equipment needs to move for a long distance through a hanging wire or a flexible connecting piece in the process of testing a sample, so that the fluctuation of a weighing signal is remarkable, and stable, continuous and high-precision quality change data are difficult to obtain. In order to achieve the technical purpose, the invention adopts the following technical scheme: the invention provides an in-situ thermogravimetric and corrosion thermal cycle testing device, which comprises: A base; The reaction tube is arranged horizontally, and the axial direction of the reaction tube is parallel to the length direction of the base; a placing table which is positioned in the reaction tube and is used for fixing a sample to be tested, and The heating movable furnace is arranged on the base along the axial sliding of the reaction tube, the heating movable furnace can enclose or separate from the reaction tube when sliding reciprocally, the heating movable furnace is provided with a heating wire, and when the heating movable furnace encloses the reaction tube, the heating wire can heat a sample inside the reaction tube. In some embodiments, the heating movable furnace comprises a furnace body, heating wires and a heat insulation layer, wherein the heating wires are arranged on the inner wall of the furnace body, and the heat insulation layer is arranged on the outer wall of the furnace body. In some embodiments, the furnace body is arch bridge-shaped, the base is provided with sliding rails along the length extending direction of the base, and two sides of the bottom of the furnace body are connected with the sliding rails in a sliding manner. In some embodiments, the central axis of the furnace body coincides with the central axis of the reaction tube. In some embodiments, the furnace body is further provided with a guide rail motor and a rack, one end of the rack is connected with the furnace body, the other end of the rack is meshed with an output shaft of the guide rail motor, and the guide rail motor can drive the rack to reciprocate through the meshing effect when driving the output shaft of the guide rail motor to rotate, so that the rack drives the furnace body to reciprocate. In some embodiments, the sample weighing and supporting assembly further comprises a sample weighing and supporting assembly, the sample weighing and supporting assembly comprises a weighing sensor, a cantilever beam structure and a sample fixing clamp, the weighing sensor is arranged in a normal temperature area at one end of the reaction tube, one end of the cantilever beam is mechanically connected with the weighing