Material fire resistance testing system

Abstract

The application discloses a material fire resistance performance testing system, which comprises a mounting seat, a fire source device and a control device. The mounting seat is formed with a mounting surface for mounting a to-be-detected piece. The fire source device comprises a driving mechanism and a fire source piece connected with the driving mechanism. The driving mechanism is used for driving the fire source piece to approach or move away from the to-be-detected piece. The control device comprises a temperature detector and a controller. The temperature detector is used for detecting the surface temperature of the to-be-detected piece. The controller is used for controlling the driving mechanism to adjust the position of the fire source piece according to the surface temperature, so that the temperature rise change of the to-be-detected piece in the test process is similar to the actual temperature rise change in a fire. Compared with a traditional fire test furnace, the material fire resistance performance testing system provided by the application cancels the furnace body, directly heats the to-be-detected piece by the fire source piece, and simulates the temperature environment in a fire through distance adjustment, thereby avoiding fuel waste.

Description

Technical Field

[0001] This invention belongs to the field of fire resistance performance testing technology, specifically relating to a material fire resistance performance testing system. Background Technology

[0002] With economic development and continuous urbanization, my country's electricity consumption has been steadily increasing, leading to a rise in the frequency of electrical fires. Substations are a crucial component of the power system, but their steel structural components have poor fire resistance. Under the high temperatures of a fire, they quickly undergo plastic deformation and lose their load-bearing capacity, resulting in building collapse. The fire resistance of steel structures directly affects the stability of the power supply system. Applying fire-retardant coatings is an effective means of improving the structural stability of steel structures during a fire. The mechanisms include heat insulation, endothermic reactions, and expansion, thereby reducing the temperature rise rate of steel components and extending their fire resistance time.

[0003] In the existing technology, the fire resistance test of steel components is mainly carried out through a fire test furnace. The main body of the fire test furnace is made of high temperature resistant heat insulation material, and fuel is continuously fed into the furnace through pipelines. The temperature inside the furnace is controlled by controlling the fuel feeding rate to simulate fire conditions. During the test, the overall temperature of the fire test furnace needs to be maintained, resulting in fuel waste. Summary of the Invention

[0004] To address the aforementioned deficiencies or shortcomings, this invention provides a material fire resistance testing system, aiming to solve the technical problem of fuel waste caused by the use of fire test furnaces for fire resistance testing in existing technologies.

[0005] To achieve the above objectives, the present invention provides a material fire resistance performance testing system, wherein the material fire resistance performance testing system includes a mounting base, a fire source device, and a control device. The mounting base has a mounting surface for mounting the test piece. The fire source device includes a drive mechanism and a fire source component connected to the drive mechanism. The drive mechanism is used to drive the fire source component closer to or away from the test piece. The control device includes a temperature detector and a controller. The temperature detector is used to detect the surface temperature of the test piece. The controller is communicatively connected to both the temperature detector and the drive mechanism and is configured to:

[0006] Receive surface temperature;

[0007] The position of the fire source component is adjusted by a drive mechanism controlled by the surface temperature.

[0008] In this embodiment of the invention, adjusting the position of the fire source component according to the surface temperature control drive mechanism includes:

[0009] The temperature difference is determined based on the surface temperature and the standard fire temperature rise curve.

[0010] The position of the fire source component is adjusted by controlling the drive mechanism based on the temperature difference.

[0011] In this embodiment of the invention, adjusting the position of the fire source component based on the temperature difference control drive mechanism includes:

[0012] The position of the fire source component is adjusted by controlling the drive mechanism according to the temperature difference and distance adjustment formula.

[0013] The distance adjustment formula is as follows:

[0014]

[0015] In the formula, t is the current time, Δt is the control time interval, and K P K is the proportional gain coefficient. i K is the integral gain coefficient. d Here, ΔT(t) is the differential gain coefficient, ΔH(t) is the temperature difference, and ΔH(t) is the initial moving distance.

[0016] In this embodiment of the invention, adjusting the position of the fire source component based on the temperature difference control drive mechanism further includes:

[0017] The position of the fire source component is adjusted by controlling the drive mechanism based on the temperature difference, distance adjustment formula, and motion compensation error formula.

[0018] The distance adjustment formula is as follows:

[0019]

[0020] The formula for motion compensation error is:

[0021]

[0022] In the formula, t is the current time, Δt is the control time interval, and K P K is the proportional gain coefficient. i K is the integral gain coefficient. d Let be the differential gain coefficient, ΔT(t) be the temperature difference, F(t) be the damping force function of the drive mechanism, and D be the differential gain coefficient. v For speed error compensation coefficient, D m For the position error compensation coefficient, D e ΔH(t) is the speed error change compensation coefficient, ΔH(t) is the initial moving distance, ΔH(t+1) is the motion adjustment distance, and M is the mass of the driving component in the drive mechanism.

[0023] In this embodiment of the invention, there are multiple temperature detectors, which are evenly spaced on the object to be tested. Before receiving the surface temperature, the method further includes:

[0024] The average value of the temperature values ​​detected by multiple temperature detectors is taken and the average value is determined as the surface temperature.

[0025] In this embodiment of the invention, the mounting base includes a mounting base plate, a side plate, and a mounting bracket. The side plate surrounds the outer edge of the mounting base plate to enclose and form a collection space for accommodating the detached material of the test piece. The mounting bracket is disposed on the mounting base plate and forms a mounting surface parallel to the mounting base plate.

[0026] In this embodiment of the invention, the number of mounting brackets is at least two. The at least two mounting brackets are arranged sequentially at intervals along the length direction of the part to be tested, and each includes two supporting uprights and a mounting crossbar connecting the two supporting uprights. The mounting crossbars of the at least two mounting brackets form a mounting surface.

[0027] In this embodiment of the invention, the support pole includes a support section and a stop section. The lower end of the support section stands on the mounting base plate and the upper end is connected to the mounting crossbar. The stop section extends upward from the upper end of the support section and extends out of the mounting crossbar.

[0028] In this embodiment of the invention, the driving mechanism includes a lead screw pair and a drive motor. The lead screw of the lead screw pair is rotatably mounted on the mounting base plate and extends upward. The nut of the lead screw pair is connected to a flame source component so that the flame source component faces the component to be tested. The drive motor is driven by the lead screw.

[0029] In this embodiment of the invention, the material fire resistance testing system also includes an image acquisition device for capturing images of the test specimen.

[0030] Through the above technical solution, the material fire resistance testing system provided in the embodiments of the present invention has the following beneficial effects:

[0031] When using the above-mentioned material fire resistance performance testing system, which includes a mounting base, a fire source device, and a control device, the test piece is first fixed by the mounting base during the fire resistance performance test. Then, the fire source device is activated to spray flames onto the test piece. The temperature detector in the control device monitors the surface temperature of the test piece in real time. The controller in the control device is connected to both the temperature detector and the drive mechanism in the fire source device, and adjusts the position of the fire source device according to the surface temperature detected by the temperature detector. This ensures that the temperature rise of the test piece during the test closely approximates the actual temperature rise during a fire. Compared to traditional fire test furnaces, the material fire resistance performance testing system provided by this invention eliminates the furnace body, directly heats the test piece by the fire source device, and simulates the temperature environment during a fire by adjusting the distance, thus avoiding fuel waste.

[0032] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0033] The accompanying drawings are provided to illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0034] Figure 1 This is a control flowchart of a controller according to an embodiment of the present invention;

[0035] Figure 2 This is a control flowchart of step S200 according to an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of a material fire resistance testing system according to an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of a fire source device from one perspective according to an embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram of the fire source device from another perspective according to an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures

[0040] 1 Mounting base 11 Mounting plate

[0041] 12 Side panels 13 Mounting brackets

[0042] 131 Supporting column 131a Supporting section

[0043] 131b Stop section 132 Mounting crossbar

[0044] 133 First support 134 Second support

[0045] 2. Drive mechanism 21. Drive motor

[0046] 22 Lead screw 23 Nut

[0047] 3. Fire source component 4. Controller

[0048] 5 Image acquisition device 6 Bearing housing

[0049] 7. Coupling 8. Bearing plate Detailed Implementation

[0050] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0051] The material fire resistance testing system of the present invention is described below with reference to the accompanying drawings.

[0052] like Figure 1 As shown, the present invention provides a material refractory performance testing system, wherein the material refractory performance testing system includes:

[0053] Mounting base 1 has a mounting surface for mounting the part to be tested;

[0054] The ignition source device includes a drive mechanism 2 and an ignition source component 3 connected to the drive mechanism 2. The drive mechanism 2 is used to drive the ignition source component 3 to move closer to or away from the component to be tested.

[0055] The control device includes a temperature detector and a controller 4. The temperature detector is used to detect the surface temperature of the workpiece to be tested. The controller 4 is communicatively connected to both the temperature detector and the drive mechanism 2, and is configured as follows:

[0056] Step S100: Receive surface temperature;

[0057] Step S200: Adjust the position of the fire source component 3 according to the surface temperature control drive mechanism 2.

[0058] When using the above-mentioned material fire resistance performance testing system, which includes a mounting base 1, a fire source device, and a control device, the test piece is first fixed by the mounting base 1 during the fire resistance performance test. Then, the fire source component 3 in the fire source device is activated to spray flames onto the test piece. The temperature detector in the control device detects the surface temperature of the test piece in real time. The controller 4 in the control device is connected to the temperature detector and the drive mechanism 2 in the fire source device, and controls the drive mechanism 2 to adjust the position of the fire source component 3 according to the surface temperature detected by the temperature detector. This makes the temperature rise of the test piece during the test similar to the actual temperature rise during a fire. Compared with traditional fire test furnaces, the material fire resistance performance testing system provided by this invention eliminates the furnace body, directly heats the test piece by the fire source component 3, and simulates the temperature environment during a fire by adjusting the distance, thus avoiding fuel waste.

[0059] In addition, the fire source component 3 provided by the present invention can also be equipped with a solenoid valve at the nozzle. The solenoid valve is connected to the controller 4. The controller 4 can control the opening degree of the solenoid valve according to the surface temperature, thereby controlling the temperature of the component to be tested.

[0060] In this embodiment of the invention, step S200, adjusting the position of the fire source 3 according to the surface temperature control drive mechanism 2, includes:

[0061] Step S210: Determine the temperature difference based on the surface temperature and the fire standard temperature rise curve;

[0062] Step S220: Adjust the position of the fire source component 3 by controlling the drive mechanism 2 according to the temperature difference.

[0063] Specifically, the formula for calculating the temperature difference is:

[0064] ΔT(t)=T i -T t (Formula 1);

[0065] T i =345lg(8t+1)+20 (Formula 2);

[0066] The controller 4 is equipped with a time recording function and starts timing from the start of the fire source component 3. Based on the test time and formula 2 (fire standard temperature rise curve formula), the standard temperature at the current moment can be determined. Then, based on the standard temperature at the current moment and the surface temperature of the component to be tested, the temperature difference is calculated, and the drive mechanism 2 is controlled to adjust the position of the fire source component 3 according to the temperature difference.

[0067] Specifically, in Formulas 1 and 2, t represents the current time, ΔT(t) represents the temperature difference, and T... i Let T be the standard temperature at time t. t Let t be the surface temperature of the part to be tested at time t.

[0068] In this embodiment of the invention, step S220, adjusting the position of the fire source component 3 according to the temperature difference control drive mechanism 2, includes:

[0069] The position of the fire source component 3 is adjusted by the drive mechanism 2 according to the temperature difference and distance adjustment formula;

[0070]

[0071] The controller 4 can control the drive mechanism 2 to drive the fire source component 3 to move according to the calculated initial moving distance. Although the above method can achieve the fitting of the actual temperature rise curve during the test with the standard fire temperature rise curve, during the operation of the drive mechanism 2, due to the damping force of the drive mechanism 2 itself and the unavoidable speed error, position error and speed change error during the driving process, if the drive mechanism 2 is controlled to drive the fire source component 3 to move only according to the initial moving distance, the actual position of the fire source component 3 will deviate from the calculated position to a certain extent, resulting in the actual temperature rise curve during the test not being able to completely fit the standard fire temperature rise curve. Therefore, in the specific embodiment of the present invention, step S220, controlling the drive mechanism 2 to adjust the position of the fire source component 3 according to the temperature difference, further includes: controlling the drive mechanism 2 to adjust the position of the fire source component 3 according to the temperature difference, the distance adjustment formula and the motion compensation error formula. The distance adjustment formula is shown in Formula 3 above, and the motion compensation error formula is:

[0072]

[0073] Based on the initial moving distance, the controller 4 further calculates the moving adjustment distance according to the motion compensation error formula, and then controls the drive mechanism 2 to drive the fire source 3 to move according to the moving adjustment distance, so that the actual temperature rise curve during the test has a high degree of fit with the standard fire temperature rise curve.

[0074] Specifically, in Formulas 3 and 4, t represents the current time, Δt represents the control time interval, and K... p K is the proportional gain coefficient. i K is the integral gain coefficient. d Let be the differential gain coefficient, ΔT(t) be the temperature difference, ΔH(t) be the initial travel distance, F(t) be the damping force function of the drive mechanism, and D be the differential gain coefficient. v For speed error compensation coefficient, D m For the position error compensation coefficient, D e Here, ΔH(t) is the speed error compensation coefficient, ΔH(t) is the initial travel distance, ΔH(t+1) is the motion adjustment distance, and M is the mass of the driving component in drive mechanism 2. This represents the integral of ΔT from time t to time t+Δt. Furthermore, the speed error compensation coefficient, position error compensation coefficient, and speed error variation compensation coefficient can be obtained through pre-drive tests based on the selected drive mechanism 2.

[0075] In this embodiment of the invention, there are multiple temperature detectors, which are evenly spaced on the workpiece to be tested. Specifically, there are five temperature detectors, all of which are patch thermocouples. The wires and compensation wires of the patch thermocouples are fixed to the mounting bracket 13 of the mounting base 1 by tie wires. One patch thermocouple is arranged at the center of the surface of the workpiece to be tested, and the other four patch thermocouples are arranged at the center of each 1 / 4 area. Before receiving the surface temperature in step S100, the method further includes: averaging the temperature values ​​detected by the multiple temperature detectors and determining the average value as the surface temperature.

[0076] like Figure 3 As shown, in this embodiment of the invention, the mounting base 1 includes a mounting base plate 11, side panels 12, and a mounting bracket 13. The side panels 12 surround the outer edge of the mounting base plate 11 to form a collection space for accommodating detached material from the test piece. The mounting bracket 13 is disposed on the mounting base plate 11 and forms a mounting surface parallel to the mounting base plate 11. The detached material is collected through the enclosed collection space, facilitating cleaning after the test. Specifically, because the detached material has a high temperature, in a specific embodiment of the invention, a fire-resistant and high-temperature-resistant mica fireproof board is also laid on the mounting base plate 11.

[0077] In this embodiment of the invention, at least two mounting brackets 13 are provided. These at least two mounting brackets 13 are arranged sequentially at intervals along the length of the component to be tested, and each includes two supporting uprights 131 and a mounting crossbar 132 connecting the two supporting uprights 131. The mounting crossbars 132 of the at least two mounting brackets 13 form a mounting surface. By providing at least two mounting brackets 13, the stability of the component to be tested during installation can be ensured.

[0078] Specifically, the mounting bracket 13 is divided into a first bracket 133 and a second bracket 134. There are two first brackets 133, which are fixedly installed at the center of the mounting base plate 11 at intervals. The ignition source device is located between the two first brackets 133. The mounting base plate 11 is also provided with guide rails extending along the arrangement direction of the two first brackets 133. There are also two second brackets 134, which are correspondingly located on the outer side of the two first brackets 133 and can be moved closer to or further away from the first brackets 133 via the guide rails. Through the above design, the position of the second brackets 134 can be adjusted according to the length of the part to be tested, thereby ensuring the installation stability of the part to be tested.

[0079] In this embodiment of the invention, the support pole 131 includes a support section 131a and a stop section 131b. The lower end of the support section 131a stands on the mounting base plate 11 and the upper end is connected to the mounting crossbar 132. The stop section 131b extends upward from the upper end of the support section 131a and extends out of the mounting crossbar 132, thereby providing lateral limitation for the test piece to be tested, so as to facilitate the installation of the test piece.

[0080] like Figure 4 and Figure 5 As shown, in this embodiment of the invention, the drive mechanism 2 includes a lead screw pair and a drive motor 21. The lead screw 22 of the lead screw pair is rotatably mounted on the mounting base plate 11 and extends upward. The nut 23 of the lead screw pair is connected to the ignition source 3, so that the ignition source 3 faces the object to be tested. The drive motor 21 is driven by the lead screw 22. The position of the ignition source 3 can be precisely controlled by adjusting the lead screw 22. When the drive motor is selected as the drive component in the drive mechanism 2, F(t) in Formula 4 is specifically the damping force function of the drive motor 21, and M is the mass of the drive motor 21. Of course, the invention is not limited to this; the drive mechanism 2 can also be in the form of an electric push rod or a robotic arm.

[0081] Specifically, a bearing seat 6 is provided on the mounting base plate 11, and the lead screw 22 is rotatably inserted in the bearing seat 6 to improve the stability of rotation; the output shaft of the drive motor 21 is connected to the lead screw 22 through a coupling 7; a bearing plate 8 for fixing the fire source component 3 extends horizontally from the nut 23.

[0082] Furthermore, the drive mechanism 2 also includes a slide rail frame, one end of which is connected to the mounting base plate 11, and the other end is used to fix the drive motor 21. The slide rail frame is formed with a vertically extending slide rail, and the side wall of the nut 23 is formed with a groove for it to move on the slide rail.

[0083] In this embodiment of the invention, the ignition source 3 is preferably a butane spray gun, which is fixed on the support plate 8 and has its nozzle facing upwards.

[0084] In this embodiment of the invention, the material fire resistance performance testing system further includes an image acquisition device 5 for photographing the test specimen. The image acquisition device 5 is installed directly in front of the mounting base 1 and is used to record parameters such as the peeling of the fire-retardant coating on the surface of the test specimen, the degree of deformation of the test specimen, and the fire-resistant performance of the test specimen. Through the image acquisition device 5, surface images of the test specimen can be acquired. Based on the surface images, the fire resistance performance of the test specimen is determined from three aspects: integrity, thermal insulation, and load-bearing capacity.

[0085] Specifically, integrity refers to the time during which the test specimen can maintain its fire-resistant and flame-retardant properties during the fire resistance test. The test specimen is considered to have lost its integrity if any of the following conditions occur:

[0086] a) Flames appear on the unexposed side and last for more than 10 seconds.

[0087] b) If a suspicious area is found during the test, place the cotton pad on the surface of the part to be tested at that location, close to the crack or the area from which flames are emanating, for 30 seconds. The position of the cotton pad can be slightly adjusted to achieve the best effect of the hot air igniting the cotton pad. Use the "screening test" method, that is, select a location where loss is likely to occur and use the cotton pad for a short time, or use a single cotton pad to move around in this area. The cotton pad being charred indicates failure.

[0088] Thermal insulation refers to the duration during which the test specimen maintains its fire-resistant and thermal insulation properties during the fire resistance test. The test specimen is considered to have lost its thermal insulation properties if the temperature rise on the unexposed surface exceeds any of the following limits:

[0089] a) The average temperature rise exceeds the initial average temperature by 140°C;

[0090] b) The temperature rise at any point exceeds the initial temperature (including the moving thermocouple) by more than 180°C (the initial temperature should be the initial average temperature of the unexposed side at the start of the test).

[0091] Load-bearing capacity refers to the time during which a test specimen can maintain its load-bearing capacity during a fire resistance test. The parameters for determining the load-bearing capacity of a test specimen are the amount of deformation and the deformation rate. If the test specimen exceeds any of the following judgment criteria, it is considered to have lost its load-bearing capacity:

[0092] a) Length change greater than 3%;

[0093] b) The bending deformation angle is greater than 5°;

[0094] c) Cross-sectional deformation greater than 10%.

[0095] Furthermore, the image acquisition device 5 includes a camera and an image processing module. The camera is used to capture images of the component under test and transmit the images to the image processing module. The image processing module is communicatively connected to the fire source component 3 and is configured to shut off the fire source component 3 in the event of a fire prevention failure. The fire prevention failure includes, but is not limited to: flames appearing on the unexposed surface of the component under test for more than 10 seconds; a change in the length of the component under test exceeding 3%; a bending deformation angle of the component under test exceeding 5°; and a cross-sectional deformation of the component under test exceeding 10%.

[0096] In a specific embodiment of the present invention, the component to be tested is a steel component, the ignition source 3 is a butane spray gun, and the temperature detector is a patch thermocouple. The test procedure for the fire resistance performance of the steel component using the above-mentioned material fire resistance performance testing system is as follows:

[0097] (1) Erect steel components and turn on the butane spray gun;

[0098] (2) Obtain the surface temperature of the steel component by using a patch thermocouple;

[0099] (3) Obtain the temperature difference function through the standard temperature rise curve of a fire;

[0100] (4) Determine the moving distance of the fire source component based on the distance adjustment formula and the motion error compensation formula;

[0101] (5) Record the experimental phenomena and judge the fire resistance.

[0102] Compared with the prior art, the present invention has the following advantages:

[0103] The present invention receives temperature data from patch thermocouples through controller 4 and sends control signals to drive motor 21 based on fire standard temperature rise curve, thereby realizing dynamic height adjustment of fire source component 3 to simulate fire standard temperature rise curve and ensure the accuracy of fire resistance performance test.

[0104] This invention utilizes refractory steel to construct the mounting base 1, with the refractory steel components connected by bolts to ensure the stability of the device during the experiment.

[0105] The system of this invention has a small number of components, is simple and lightweight to install, has a simple test procedure, and low equipment cost, which reduces the cost of fire-resistant coatings for steel components in substations and improves test efficiency.

[0106] This invention utilizes a temperature detector, an image acquisition device 5, and a controller 4 to collect and store key parameters such as the temperature, deformation degree, and fire-resistant performance of the unexposed surface of the component under test, and determines the fire resistance performance of fireproof coatings for steel components in substations according to current standards.

[0107] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0108] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0109] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0110] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A material refractory performance testing system, characterized in that, The material fire resistance testing system includes: Mounting base (1) has a mounting surface for mounting the part to be tested; The ignition source device includes a drive mechanism (2) and an ignition source component (3) connected to the drive mechanism (2), wherein the drive mechanism (2) is used to drive the ignition source component (3) to move closer to or further away from the object to be tested; The control device includes a temperature detector and a controller (4). The temperature detector is used to detect the surface temperature of the workpiece to be tested. The controller (4) is communicatively connected to both the temperature detector and the drive mechanism (2) and is configured to: Receive the surface temperature; The position of the fire source component (3) is adjusted by the drive mechanism (2) according to the surface temperature. The step of adjusting the position of the fire source (3) by controlling the drive mechanism (2) according to the surface temperature includes: The temperature difference is determined based on the surface temperature and the standard fire temperature rise curve. The position of the fire source component (3) is adjusted by controlling the drive mechanism (2) according to the temperature difference. The step of adjusting the position of the fire source component (3) by controlling the drive mechanism (2) according to the temperature difference includes: The position of the fire source component (3) is adjusted by the drive mechanism (2) according to the temperature difference and distance adjustment formula; The distance adjustment formula is as follows: In the formula, t For the current moment, To control the time interval, This is the proportional gain coefficient. This is the integral gain coefficient. The differential gain coefficient, For temperature difference, This represents the initial movement distance.

2. The material refractory performance testing system according to claim 1, characterized in that, The step of adjusting the position of the fire source component (3) by controlling the drive mechanism (2) according to the temperature difference further includes: The drive mechanism (2) is controlled to adjust the position of the fire source component (3) according to the temperature difference, distance adjustment formula and motion compensation error formula; The distance adjustment formula is as follows: The motion compensation error formula is as follows: In the formula, t For the current moment, To control the time interval, This is the proportional gain coefficient. This is the integral gain coefficient. The differential gain coefficient, For temperature difference, Let be the damping force function of the drive mechanism. For speed error compensation coefficient, For position error compensation coefficient, This is the speed error variation compensation coefficient. This is the initial movement distance. M represents the motion adjustment distance, and M represents the mass of the driving component in the driving mechanism (2).

3. The material refractory performance testing system according to claim 1 or 2, characterized in that, The number of temperature detectors is multiple, and the multiple temperature detectors are evenly spaced on the object to be tested. Before receiving the surface temperature, the process further includes: The average value of the temperature values ​​detected by the multiple temperature detectors is taken, and the average value is determined as the surface temperature.

4. The material refractory performance testing system according to claim 1 or 2, characterized in that, The mounting base (1) includes a mounting base plate (11), a side panel (12), and a mounting bracket (13). The side panel (12) is arranged around the outer edge of the mounting base plate (11) to enclose and form a collection space for accommodating the detached material of the test piece. The mounting bracket (13) is disposed on the mounting base plate (11) and forms a mounting surface parallel to the mounting base plate (11).

5. The material refractoriness testing system according to claim 4, characterized in that, The number of mounting brackets (13) is at least two. At least two mounting brackets (13) are arranged sequentially at intervals along the length direction of the part to be tested, and each includes two support uprights (131) and a mounting crossbar (132) connecting the two support uprights (131). The mounting crossbars (132) of at least two mounting brackets (13) form the mounting surface.

6. The material refractory performance testing system according to claim 5, characterized in that, The support pole (131) includes a support section (131a) and a stop section (131b). The lower end of the support section (131a) is erected on the mounting base plate (11) and the upper end is connected to the mounting crossbar (132). The stop section (131b) extends upward from the upper end of the support section (131a) and extends beyond the mounting crossbar (132).

7. The material refractory performance testing system according to claim 4, characterized in that, The drive mechanism (2) includes a lead screw pair and a drive motor (21). The lead screw (22) of the lead screw pair is rotatably mounted on the mounting base plate (11) and extends upward. The nut (23) of the lead screw pair is connected to the fire source component (3) so that the fire source component (3) faces the component to be tested. The drive motor (21) is driven by the lead screw (22).

8. The material refractoriness testing system according to claim 1 or 2, characterized in that, The material fire resistance testing system also includes an image acquisition device (5) for capturing images of the test piece.

Images