Device for testing high-temperature performance of iron-chromium-aluminum electric heating element
By designing a high-temperature performance testing device for iron-chromium-aluminum electric heating elements, the problem of the inability to accurately evaluate the electric heating elements under actual use conditions in the existing technology has been solved, and the accurate performance evaluation of electric heating elements under different furnace temperature environments has been realized.
Patent Information
- Application Number
- CN202423320154.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing technologies cannot accurately simulate the high-temperature performance of electric heating elements in actual use environments, especially they cannot assess their service life and performance under different furnace temperature environments.
A high-temperature performance testing device for iron-chromium-aluminum electric heating elements was designed, including a detachable inner wall of the furnace, a controller, and a touch screen. It can simulate the actual use environment of the electric heating elements and evaluate their performance at different temperatures by precisely controlling the temperature and heating rate.
It enables accurate performance testing of electric heating elements under actual use conditions, and can more accurately evaluate their service life and performance under different furnace temperature environments.
Smart Images
Figure CN223870759U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric heating element performance testing technology, and in particular to a high-temperature performance testing device for iron-chromium-aluminum electric heating elements. Background Technology
[0002] Electric heating elements are one of the core components in various electric heating equipment. Reasonable selection and design of electric heating elements, such as shape, size, power, and surface load, can effectively improve the heating efficiency of electric heating equipment, reduce energy consumption, and extend service life. Therefore, electric heating element manufacturers and designers pay close attention to the performance and effects of different electric heating element design schemes in practical applications.
[0003] (1) Currently, the design of electric heating elements focuses on laboratory data such as rapid life, high-temperature strength, and temperature coefficient of resistance of the electric heating materials. However, such data can only characterize the differences in the performance of electric heating materials and cannot characterize the performance of the electric heating elements after processing into electric heating elements, such as heating efficiency, energy consumption, and service life, in combination with the usage environment and characteristics. In particular, the current rapid life test can compare the differences in the test life of different materials at different temperatures, but due to the differences in the test environment and the usage environment, as well as the differences in the shape of the test materials, it can only guide the design and material selection. Utility Model Content
[0004] In view of this, the present invention provides a high-temperature performance testing device for iron-chromium-aluminum electric heating elements.
[0005] Specifically, this utility model is achieved through the following technical solution:
[0006] According to a first aspect of this utility model, a high-temperature performance testing device for iron-chromium-aluminum electric heating elements is provided, comprising:
[0007] A testing furnace is used for high-temperature heating of iron-chromium-aluminum electric heating elements; the inner wall of the testing furnace is detachably installed inside the furnace.
[0008] A controller is used to control the operating parameters of the test furnace; the controller is connected to the test furnace.
[0009] A touchscreen is used to display the operating parameters of the test furnace; the touchscreen is connected to the controller.
[0010] Optionally, the test furnace includes: an outer shell and a test connector, wherein the outer shell has a furnace opening, the inner wall of the furnace is detachably disposed inside the outer shell, and the test connector is connected to the control host of the test furnace.
[0011] Optionally, the test furnace further includes an inner side plate and a first ceramic fiber plate, wherein the inner side plate and the first ceramic fiber plate are both disposed inside the outer shell, and the inner side plate and the first ceramic fiber plate together enclose a test space, and the inner side wall of the furnace is detachably disposed within the test space.
[0012] Optionally, the test furnace further includes: a second ceramic fiber plate, which is disposed inside the outer shell and on the outer wall of the inner side plate, and connects two opposing first ceramic fiber plates.
[0013] Optionally, the test furnace further includes a third ceramic fiber plate, which is disposed inside the outer shell and sequentially wraps around the outer walls of the first ceramic fiber plate and the second ceramic fiber plate.
[0014] Optionally, the test furnace further includes: heat insulation cotton, which fills the space between the outer shell and the third ceramic fiber plate.
[0015] Optionally, the test furnace further includes a thermocouple, which is disposed within the test space and connected to the control host of the test furnace.
[0016] Optionally, the inner wall of the furnace body is configured as a flat plate for mounting corrugated heating elements.
[0017] Optionally, the inner wall of the furnace body is configured as a groove for mounting spiral heating elements.
[0018] Optionally, the controller is a PLC controller.
[0019] The technical solution provided by this utility model brings at least the following beneficial effects:
[0020] The high-temperature performance testing device for iron-chromium-aluminum electric heating elements provided in this application can simulate the actual use of electric heating elements, thereby conducting high-temperature performance tests on iron-chromium-aluminum electric heating elements that are closest to actual use conditions, resulting in more accurate test results. Attached Figure Description
[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 A schematic diagram illustrating the working principle of a high-temperature performance testing device for iron-chromium-aluminum electric heating elements provided in this embodiment of the present invention;
[0024] Figure 2 This is a schematic diagram of the structure of the test furnace in a high-temperature performance testing device for iron-chromium-aluminum electric heating elements provided in an embodiment of the present invention;
[0025] Figure 3 A schematic diagram of the first embodiment of the inner wall of the furnace body in a high-temperature performance testing device for iron-chromium-aluminum electric heating elements provided by this utility model;
[0026] Figure 4 A schematic diagram of the second embodiment of the inner sidewall of the furnace body in a high-temperature performance testing device for iron-chromium-aluminum electric heating elements provided by this utility model. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0028] Current rapid life testing can compare the differences in lifespan of different materials at different temperatures. However, due to differences in testing and usage environments, as well as differences in the shape of the test materials, it can only guide material selection in design and cannot provide a more intuitive reference for the shape design, power design, and surface load design of heating elements. The main reasons are as follows:
[0029] Rapid life testing of electrothermal alloys is conducted in a stable airflow environment without insulation. Therefore, it is necessary to adjust the current and voltage parameters to make the sample reach the test condition temperature. However, in an environment without insulation, the actual surface load of the material being tested is often much higher than the surface load design under normal use conditions. Different surface load conditions cannot accurately characterize the performance of the material.
[0030] In practical applications, electrothermal materials are often processed into electrothermal elements of different shapes such as spirals and waves. Due to the differences in the shape of the electrothermal elements, the heat dissipation conditions and deformation resistance conditions of the elements vary greatly during use. Therefore, rapid life tests cannot accurately characterize the differences in the service life of elements of different shapes.
[0031] During the use of electric heating elements, different power and surface load designs not only affect the service life of the material, but also affect key parameters such as energy consumption and heating rate, which cannot be characterized by rapid life tests.
[0032] Rapid life testing cannot measure the lifespan of electrothermal materials under specified surface load values in different furnace temperature environments, yet this result is one of the most important performance parameters for electrothermal alloy designers.
[0033] Figure 1 The illustration schematically shows a high-temperature performance testing device for an iron-chromium-aluminum electric heating element applicable to an embodiment of the present invention.
[0034] Reference Figure 1-4 As shown, this application provides a high-temperature performance testing device for iron-chromium-aluminum electric heating elements, comprising:
[0035] The test furnace 10 is used to heat the iron-chromium-aluminum electric heating element at high temperature; the test furnace 10 has a detachable inner wall 18.
[0036] The controller 20 is used to control the operating parameters of the test furnace 10; the controller 20 is connected to the test furnace 10.
[0037] The touch screen 30 is used to display the operating parameters of the test furnace 10; the touch screen 30 is connected to the controller 20.
[0038] In this embodiment, the inner wall 18 of the furnace can be disassembled from the test furnace 10 as needed to fix the iron-chromium-aluminum electric heating element, and then installed into the test furnace 10 for experimentation. The experimental environment of the test furnace 10 is closer to the actual use environment, and the test results obtained are more accurate.
[0039] The test furnace 10, as a core component, possesses high-temperature heating capabilities, simulating the high-temperature environments that heating elements may encounter in practical applications. By precisely controlling the temperature inside the test furnace, different operating environment temperatures can be simulated, thereby evaluating the performance of the heating elements at different temperatures. The detachable design of the inner wall 18 of the furnace makes fixing and replacing the heating elements simple and quick. This design allows users to flexibly adjust the structure of the inner wall of the furnace according to the shape, size, and installation method of the heating elements, to more accurately simulate the installation method of the heating elements in practical applications. The controller 20 is responsible for controlling the operating parameters of the test furnace 10, such as temperature and heating rate. By precisely controlling these parameters, the stability and repeatability of the testing process can be ensured, thereby improving the accuracy of the test results. The touch screen 30, as a human-machine interface, can intuitively display the operating parameters of the test furnace 10, such as the current temperature and heating time. The touch screen also provides operation menus and command input functions, facilitating parameter setting and monitoring of the testing process by users. The technical problem addressed in this application primarily focuses on testing the service life of electrothermal materials under different furnace temperatures. Traditional rapid service life testing methods often fail to accurately simulate the working environment of electrothermal materials in actual applications, thus hindering accurate assessment of their service life under varying furnace temperatures. The testing apparatus provided in this application solves this problem through the following methods: Simulating the actual usage environment: By precisely controlling the temperature and heating rate within the testing furnace, the working environment of the electrothermal element in actual applications is simulated. Flexible adjustment of testing conditions: The removable inner wall design of the furnace allows users to adjust the testing conditions according to the actual condition of the electrothermal element, more accurately simulating its installation method and operating state. Precise service life testing: In the simulated actual usage environment, the electrothermal element undergoes prolonged high-temperature heating tests to evaluate its service life under different furnace temperatures.
[0040] For example, the test furnace 10 includes: a shell 11 and a test connector, wherein the shell 11 has a furnace opening, the inner side wall 18 of the furnace is detachably disposed inside the shell 11, and the test connector is connected to the control host of the test furnace 10.
[0041] In this embodiment, the test connector is used to connect the iron-chromium-aluminum heating element and to apply a test voltage to the element.
[0042] For example, the test furnace 10 further includes an inner side plate 12 and a first ceramic fiber plate 13, wherein the inner side plate 12 and the first ceramic fiber plate 13 are both disposed inside the outer shell 11, and the inner side plate 12 and the first ceramic fiber plate 13 together enclose a test space, and the inner side wall 18 of the furnace is detachably disposed inside the test space.
[0043] In this embodiment, two inner side plates 12 are arranged opposite to each other, and two first ceramic fiber boards 13 are arranged opposite to each other. Adjacent inner side plates 12 and first ceramic fiber boards 13 are connected to each other to jointly enclose and form a test space.
[0044] For example, the test furnace 10 further includes: a second ceramic fiber plate 14, which is disposed inside the outer shell 11 and on the outer wall of the inner side plate 12, and connects two opposing first ceramic fiber plates 13.
[0045] In this embodiment, the two opposing inner side plates 12 can be connected not only by a first ceramic fiber plate 13, but also by a second ceramic fiber plate 14. In this case, the outer wall of the first ceramic fiber plate 13 is connected to the second ceramic fiber plate 14. The second ceramic fiber plate 14 can enhance the stability and thermal insulation effect of the entire structure.
[0046] For example, the test furnace 10 further includes a third ceramic fiber plate 15, which is disposed inside the outer shell 11 and sequentially wraps the outer walls of the first ceramic fiber plate 13 and the second ceramic fiber plate 14.
[0047] In this embodiment of the application, a third ceramic fiber board 15 is sequentially laid on the outer wall of the first ceramic fiber board 13 and the second ceramic fiber board 14. The third ceramic fiber board 15 can enhance the stability and heat insulation effect of the entire structure.
[0048] For example, the test furnace 10 further includes: heat insulation cotton 16, which fills the space between the outer shell 11 and the third ceramic fiber plate 15.
[0049] In this embodiment, the heat insulation cotton 16 completely fills the space between the inner wall of the outer shell 11 and the third ceramic fiber board 15, thereby reducing heat loss.
[0050] For example, the test furnace 10 further includes a thermocouple 17, which is disposed in the test space and connected to the control host of the test furnace 10.
[0051] In this embodiment, thermocouple 17 is used to measure real-time temperature and transmit the measurement data to controller 20 for analysis by controller 20 and display of test data on touch screen 30.
[0052] For example, the inner wall 18 of the furnace body is configured as a flat plate for mounting corrugated heating elements.
[0053] In this embodiment of the application, in order to simulate the actual use of the element, the element is specially processed into a corrugated heating element. In order to fix the corrugated heating element, the inner wall 18 of the furnace is configured as a flat inner wall of the furnace. The corrugated heating element can be fixed to the flat inner wall of the furnace by means of screws.
[0054] For example, the inner wall 18 of the furnace body is configured as a groove for accommodating spiral heating elements.
[0055] In this embodiment of the application, in order to simulate the actual use of the element, the element is specially processed into a spiral heating element. In order to fix the spiral heating element, the inner wall 18 of the furnace is configured as a groove-shaped inner wall of the furnace, so that the spiral heating element can be placed in the groove of the groove-shaped inner wall of the furnace.
[0056] For example, the controller 20 is a PLC controller.
[0057] In this embodiment of the application, the PLC controller can have a built-in program to adjust the operating parameters of the test furnace 10, such as the current, voltage, furnace temperature, and furnace door opening and closing time of the test furnace 10.
[0058] The high-temperature performance testing device for iron-chromium-aluminum electric heating elements provided in this application can simulate the actual use of electric heating elements, thereby conducting high-temperature performance tests on iron-chromium-aluminum electric heating elements that are closest to actual use conditions, resulting in more accurate test results.
[0059] It should be noted that in this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0060] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0061] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0062] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.
[0063] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A high-temperature performance testing device for iron-chromium-aluminum electric heating elements, characterized in that, include: A testing furnace is used for high-temperature heating of iron-chromium-aluminum electric heating elements; the inner wall of the testing furnace is detachably installed inside the furnace. A controller is used to control the operating parameters of the test furnace; the controller is connected to the test furnace. A touchscreen is used to display the operating parameters of the test furnace; the touchscreen is connected to the controller.
2. The high-temperature performance testing device for iron-chromium-aluminum electric heating elements according to claim 1, characterized in that, The test furnace includes an outer shell and a test connector, wherein the outer shell has a furnace opening, the inner wall of the furnace is detachably installed inside the outer shell, and the test connector is connected to the control host of the test furnace.
3. The high-temperature performance testing device for iron-chromium-aluminum electric heating elements according to claim 2, characterized in that, The test furnace further includes an inner side plate and a first ceramic fiber plate, wherein the inner side plate and the first ceramic fiber plate are both disposed inside the outer shell, and the inner side plate and the first ceramic fiber plate together form a test space, and the inner side wall of the furnace is detachably disposed within the test space.
4. The high-temperature performance testing device for iron-chromium-aluminum electric heating elements according to claim 3, characterized in that, The test furnace further includes a second ceramic fiber plate, which is disposed inside the outer shell and on the outer wall of the inner side plate, and connects two opposite first ceramic fiber plates.
5. The high-temperature performance testing device for iron-chromium-aluminum electric heating elements according to claim 4, characterized in that, The test furnace further includes a third ceramic fiber plate, which is disposed inside the outer shell and sequentially wraps around the outer walls of the first ceramic fiber plate and the second ceramic fiber plate.
6. The high-temperature performance testing device for iron-chromium-aluminum electric heating elements according to claim 5, characterized in that, The test furnace also includes: heat insulation cotton, which fills the space between the outer shell and the third ceramic fiber plate.
7. The high-temperature performance testing device for iron-chromium-aluminum electric heating elements according to claim 3, characterized in that, The test furnace also includes a thermocouple, which is installed in the test space and connected to the control host of the test furnace.
8. The high-temperature performance testing device for iron-chromium-aluminum electric heating elements according to claim 1, characterized in that, The inner wall of the furnace is configured as a flat plate for mounting corrugated heating elements.
9. The high-temperature performance testing device for iron-chromium-aluminum electric heating elements according to claim 1, characterized in that, The inner wall of the furnace body is configured as a groove for mounting spiral heating elements.
10. The high-temperature performance testing device for iron-chromium-aluminum electric heating elements according to claim 1, characterized in that, The controller is a PLC controller.