Displacement measuring device for basalt fiber product at high temperature
By designing a high-temperature displacement measurement device that combines the heating equipment with the loading equipment, the problems of inaccurate high-temperature mechanical properties testing and safety hazards of basalt fiber products in the prior art are solved, and the accurate measurement of the high-temperature mechanical properties of basalt fiber products is achieved.
Patent Information
- Application Number
- CN202422050008.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-23
AI Technical Summary
In the prior art, when the mechanical properties of basalt fiber products are tested at high temperatures, the heating system and the loading system are separated, and the mechanical properties of the test piece under real high temperatures cannot be truly simulated, resulting in inaccurate measurement results and safety hazards.
A displacement measurement device at high temperature is designed, which cleverly combines the heating equipment and the loading equipment, and collects data through a displacement meter and a displacement collector to achieve synchronization of heating and loading, simulating the real environment of the test piece in the high temperature of the fire.
The device can truly simulate the environment of the test piece in the high temperature of fire, accurately measure the mechanical properties of basalt fiber products at high temperatures, provide more realistic inspection data, and solve the problems of inaccurate measurement results and safety hazards in the prior art.
Smart Images
Figure CN223037639U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of construction, in particular to a high-temperature compressive test device, specifically a displacement measuring device for basalt fiber products at high temperature. Background Technique
[0002] Concrete is the most widely used and largest amount of building material in engineering construction. In recent years, a new type of concrete, basalt fiber concrete, has been invented and promoted due to its good durability, high temperature resistance, and anti-seepage and crack resistance. Before its popularization and utilization, it is necessary to deeply study its various performances.
[0003] Fire is a frequent disaster that endangers the safety of building structures. Under the action of high temperature in a fire, the mechanical properties of basalt fiber products will decay to a large extent, resulting in a decrease in the bearing capacity of specimens at high temperature, and ultimately causing certain damage or even collapse of the building structure. Therefore, studying the high-temperature mechanical properties of basalt fiber products is also of top priority.
[0004] In current experimental studies, the heating system and loading system of the high-temperature compressive test device for basalt fiber products are often separated, that is, a test mode of first using a furnace to heat up to the designed temperature and then taking out the specimen and placing it in a press for loading until failure is adopted. However, in reality, the specimen will inevitably bear loads while heating up. Taking out the heated specimen for test measurement will affect the accuracy of the results due to heat loss and environmental changes. Therefore, the current test mode cannot well simulate the mechanical properties of specimens under real high-temperature conditions. Since the specimen is at a high temperature during the test, conventional methods for measuring the displacement of the specimen are not applicable, and there are also certain safety hazards. Therefore, it is necessary to propose a high-temperature mechanical property test device for basalt fiber products to solve the above problems. Summary of the Invention
[0005] The utility model provides a displacement measuring device for basalt fiber products at high temperature to solve a series of problems such as the separation of the heating system and the loading system during the high-temperature compressive test of the new type of concrete basalt fiber concrete at present, which does not conform to the actual pressure bearing, cannot reflect the mechanical properties at high temperature under real conditions, and cannot provide test data closer to reality.
[0006] The utility model provides a high-temperature displacement measuring device for basalt fiber products, which comprises a loading device. The loading device includes a pair of rotating vertical rods supported at the bottom on the ground. The upper parts of the two rotating vertical rods are connected with an upper pressure plate. A lower pressure plate is arranged directly below the upper pressure plate. The lower pressure plate is supported by a loading power source. A basalt fiber product is installed on the lower pressure plate below the upper pressure plate through a support. A high-temperature furnace is buckled outside the basalt fiber product. The high-temperature furnace includes two buckled semi-furnace bodies. The two semi-furnace bodies are slidably installed on the crossbar tracks of a rigid frame. An observation window is opened on the side wall of the high-temperature furnace. The rigid frame is supported on the ground around the lower pressure plate. Paired displacement gauges are oppositely abutted against the lower surface of the upper pressure plate and the lower surface of the upper pressure plate. The displacement gauges are installed on the mounting arms of a displacement gauge bracket. The displacement gauges are electrically connected with a displacement acquisition instrument.
[0007] During implementation, it includes a loading device. The loading device includes a pair of rotating vertical rods supported at the bottom on the ground. The lower fixed part and the upper rotating part of the rotating vertical rod are connected through a bearing. The upper rotating part of the rotating vertical rod rotates actively and is provided with an external thread outside. The upper parts of the two rotating vertical rods are connected with an upper pressure plate, that is, two screw holes are opened on the upper pressure plate. The outer surface of the rotating vertical rod is provided with an external thread matching the screw holes of the upper pressure plate. The upper pressure plate moves up and down and is positioned synchronously with the rotation of the rotating vertical rod. A lower pressure plate is arranged directly below the upper pressure plate. The lower pressure plate is supported by a loading power source. The loading power source applies an upward acting force to the lower pressure plate to jack up the lower pressure plate. A basalt fiber product is installed on the lower pressure plate below the upper pressure plate through a support. The support includes a cylindrical steel block. A rectangular steel block is welded to the end face of the cylindrical steel block. The support includes an upper support and a lower support. A water circulation cooling system is arranged below the lower support and above the upper support. The water circulation cooling system includes two water cooling plates. The water cooling plates are in the shape of a hollow cylinder. The two water cooling plates are respectively welded to the lower surface of the lower support and the upper surface of the upper support. The inner cavity of the water cooling plate is connected to a water tank through a water pipe. A circulation water pump is arranged on the water pipe for water inlet. The water circulation of the water tank and the inner cavity of the water cooling plate is realized through the water pipe and the circulation water pump. Rock wool is laid on the upper surface of the lower pressure plate. The water cooling plate welded to the lower surface of the lower support is placed on the rock wool.
[0008] A high-temperature furnace is buckled outside the basalt fiber product. The high-temperature furnace includes two buckled semi-furnace bodies. Openings for the support to pass through are arranged on the upper and lower surfaces of the high-temperature furnace. The openings are arranged between the semi-furnace bodies on the left and right sides. Mutually matching buckles are arranged on the connecting edges of the semi-furnace bodies on the left and right sides. The two semi-furnace bodies are buckled through the buckles to heat the basalt fiber product. The two semi-furnace bodies are slidably installed on the crossbar tracks of a rigid frame. The rigid frame includes vertically arranged vertical rods. Four vertical rods are oppositely arranged at the four corners outside the lower pressure plate. A pair of horizontal crossbar tracks are welded between the two vertical rods on the same side. The direction of the crossbar tracks is consistent with the opening and closing direction of the semi-furnace body, and the crossbar tracks do not affect the movement of the lower pressure plate. The lower crossbar track is higher than the rock wool. The upper crossbar track is higher than the top of the semi-furnace body.
[0009] Furthermore, for the stable fixation of the rigid frame, the rigid frame is in the shape of a cuboid frame structure, that is, the ends of the four cross-bar tracks are connected by horizontal bars, and the rigid frame supports on the ground around the lower pressing plate;
[0010] The two half furnace bodies are installed independently without affecting each other, that is, the half furnace bodies slide along the cross-bar tracks of the rigid frame to realize the closing and opening of the two half furnace bodies. A temperature display for showing the temperature inside the furnace is provided on the side wall of one half furnace body, and heating units are uniformly arranged on the furnace wall of the other half furnace body. The heating units include silicon carbide rods uniformly arranged in the furnace chamber to uniformly heat the basalt fiber products to meet the temperature requirements. The heating units are electrically connected to a temperature controller and are controlled by the temperature controller located outside the furnace. The temperature controller is provided with a heating switch module and a constant temperature switch module. The heating switch module shows red, indicating that the furnace is in the heating state, and the constant temperature switch module shows green, indicating that the furnace is in the constant temperature state and the experiment can be started. An observation window is opened on the side wall of the high-temperature furnace. The observation window is made of high-temperature resistant glass, and the pressure-bearing deformation of the basalt fiber products inside the furnace is observed through the observation window. The lower surface of the upper pressing plate and the lower surface of the upper pressing plate are oppositely abutted with paired displacement gauges. The two pairs of displacement gauges located above and below respectively press against the lower surface of the upper pressing plate and the upper surface of the lower pressing plate. The displacement gauges are installed on the mounting arms of the displacement gauge brackets. The displacement gauge brackets include vertically arranged mounting rods, and mounting arms that move along the mounting rods are installed on the mounting rods. As the displacement gauges move, the mounting arms move up and down along the mounting rods. The displacement gauges are electrically connected to a displacement data collector, and the displacement gauges and the connected displacement data collector collect the distance between the upper pressing plate and the lower pressing plate and store the test data.
[0011] In use, rock wool is laid on the lower platen for heat insulation. The two half furnace bodies of the high-temperature furnace are installed in the rigid frame, and the two half furnace bodies on the left and right sides can move along the smooth crossbar guide rails. Install the basalt fiber products. Above the lower platen, a water-cooled plate, a lower support, and the basalt fiber products are successively arranged from bottom to top. Above the basalt fiber products, an upper support and a water-cooled plate are provided. Connect the water-cooled plate to the water pipe. Slide the half furnace bodies to butt, close the buckle, and seal the high-temperature furnace. Subsequently, start the loading device to move the upper platen downward, that is, synchronously drive the rotating vertical rod, and the upper platen moves downward along the rotating vertical rod until it slightly contacts the surface of the water-cooled plate above. Install the displacement gauge on the mounting arm of the displacement gauge bracket, adjust the positions of the mounting arm of the displacement gauge bracket and the mounting rod of the displacement gauge support. While using two displacement gauges to hold the upper platen, the other two displacement gauges hold the lower platen. At this time, the distance between a pair of displacement gauges is the original distance. Turn on the circulating water pump to fill the water-cooled plate with cold water. Turn on the temperature controller and adjust it to the required test temperature. After the basalt fiber products reach the specified temperature, the constant temperature switch module of the temperature controller shows green, and the experiment can start. Open the loading power source, push the lower platen upward, and sequentially transfer the load to the basalt fiber products through the water-cooled plate and the lower support. Observe the experiment process through the observation window, and use the displacement gauge and the displacement acquisition instrument to collect and store the test results to obtain the mechanical properties at high temperature.
[0012] Compared with the prior art, the present utility model has the following beneficial effects:
[0013] The high-temperature displacement measurement device for basalt fiber products provided by the present utility model cleverly combines the heating equipment and the loading equipment, and forms a comprehensive test system that can be used to measure the mechanical properties of basalt fiber products at high temperature by collecting displacement data. By realizing the synchronization of heating and loading, it can truly simulate the real environment of the specimen in a fire at high temperature. At the same time, through the water circulation cooling equipment, it can avoid the detection equipment from malfunctioning due to heat conduction, solve the problem that the conventional devices in the prior art cannot accurately measure the mechanical properties of basalt fiber products at high temperature, simply and efficiently complete the compressive test of basalt fiber products at high temperature, truly reflect the load-bearing capacity of basalt fiber products at high temperature, provide effective data support for the research on the fire resistance performance of basalt fiber products, and provide technical guarantee for the research on new concrete materials. Description of the Drawings
[0014] Figure 1 It shows the schematic diagram of the main structure of the test device in the embodiment of the present invention.
[0015] Figure 2 It shows the schematic diagram of the loading device.
[0016] Figure 3 It shows the schematic diagram of the high-temperature furnace.
[0017] Figure 4 Shows a top view of the heating unit.
[0018] Figure 5 Shows a schematic diagram of the displacement gauge connection.
[0019] Figure 6 Shows a schematic diagram of the water circulation cooling system.
[0020] In the figure, the markings are as follows: 101 - rotating vertical rod, 102 - upper pressure plate, 103 - lower pressure plate, 104 - loading power source,
[0021] 201 - half furnace body, 202 - buckle, 203 - heating unit, 204 - temperature controller, 205 - temperature display, 206 - observation window, 3 - basalt fiber product, 401 - displacement gauge, 402 - displacement acquisition instrument, 403 - displacement gauge support,
[0022] 501 - water cooling plate, 502 - water pipe, 503 - water tank, 504 - circulation water pump, 6 - rigid frame, 7 - support, 8 - rock wool. Detailed implementation mode
[0023] The following combines the attached drawings to illustrate the specific embodiments of the present invention.
[0024] A high-temperature displacement measurement device for basalt fiber products, as Figures 1 - 6As shown in the figure, during implementation, it includes a loading device. The loading device includes a pair of rotating vertical rods 101 with their bottoms supported on the ground. The lower fixed part and the upper rotating part of the rotating vertical rod 101 are connected by a bearing. The upper rotating part of the rotating vertical rod 101 rotates actively and has an external thread on the outside. The upper parts of the two rotating vertical rods 101 are connected with an upper pressure plate 102. That is, two screw holes are opened on the upper pressure plate 102, and the outer surface of the rotating vertical rod 101 is provided with an external thread that matches the screw holes of the upper pressure plate 102. The upper pressure plate 102 moves up and down and is positioned as the rotating vertical rod 101 rotates synchronously. A lower pressure plate 103 is arranged directly below the upper pressure plate 102. The lower pressure plate 103 is supported by a loading power source 104. The loading power source 104 applies an upward force to the lower pressure plate 103 to lift the lower pressure plate 103 upward. A basalt fiber product 3 is installed on the lower pressure plate 103 below the upper pressure plate 102 through a support 7. The support includes a cylindrical steel block, and a rectangular steel block is welded to the end face of the cylindrical steel block. The support 7 includes an upper support 7 and a lower support 7. A water circulation cooling system is provided below the lower support 7 and above the upper support 7. The water circulation cooling system includes two water cooling plates 501. The water cooling plates 501 are in the shape of a hollow cylinder. The two water cooling plates 501 are respectively welded to the lower surface of the lower support 7 and the upper surface of the upper support 7. The inner cavity of the water cooling plate 501 is connected to a water tank 503 through a water pipe 502. A circulation water pump 504 is provided on the water pipe 502 for water inlet. The water circulation of the water tank 503 and the inner cavity of the water cooling plate 501 is realized through the water pipe 502 and the circulation water pump 504. Rock wool 8 is laid on the upper surface of the lower pressure plate 103. The water cooling plate welded to the lower surface of the lower support 7 is placed on the rock wool 8.
[0025] A high-temperature furnace is buckled outside the basalt fiber product 3. The high-temperature furnace includes two buckled half furnace bodies 201. Openings for the support 7 to pass through are provided on both the upper and lower surfaces of the high-temperature furnace. The openings are arranged between the half furnace bodies 201 on the left and right sides. Matching buckles 202 are provided on the connecting edges of the left and right half furnace bodies 201. The two half furnace bodies are buckled through the buckles to heat the basalt fiber product 3. The two half furnace bodies 201 are slidably installed on the crossbar tracks of the rigid frame 6. The rigid frame 6 includes vertically arranged vertical rods. Four vertical rods are arranged opposite to the four corners outside the lower pressure plate 103. A pair of horizontal crossbar tracks are welded between the two vertical rods on the same side. The direction of the crossbar tracks is consistent with the opening and closing direction of the half furnace body 201, and the crossbar tracks do not affect the movement of the lower pressure plate 103. The lower crossbar track is higher than the rock wool 8, and the upper crossbar track is higher than the top of the half furnace body 201.
[0026] Furthermore, for the stable fixation of the rigid frame 6, the rigid frame 6 is in the shape of a rectangular parallelepiped frame structure. That is, the ends of the four crossbar tracks are connected by horizontal rods. The rigid frame 6 is supported on the ground around the lower pressure plate 103.
[0027] The two half furnace bodies 201 are installed independently without affecting each other. That is, the half furnace body 201 slides along the crossbar track of the rigid frame 6 to realize the closing and opening of the two half furnace bodies. A temperature display 205 for showing the temperature inside the furnace is provided on the side wall of one half furnace body 201, and heating units 203 are evenly arranged on the furnace wall of the other half furnace body 201. The heating unit 203 includes silicon carbide rods evenly arranged in the furnace chamber to uniformly heat the basalt fiber product 3 to meet the temperature requirements. The heating unit 203 is electrically connected to the temperature controller 204 and is controlled by the temperature controller 204 located outside the furnace. The temperature controller 204 is provided with a heating switch module and a constant temperature switch module. The heating switch module shows red, indicating that the furnace is in the heating state, and the constant temperature switch module shows green, indicating that the furnace is in the constant temperature state and the experiment can be started. An observation window 206 is opened on the side wall of the high-temperature furnace. The observation window 206 is made of high-temperature resistant glass, and the pressure-bearing deformation of the basalt fiber product 3 inside the furnace is observed through the observation window 206. The lower surface of the upper pressing plate 102 and the lower surface of the upper pressing plate 102 are oppositely abutted with pairs of displacement gauges 401. The two pairs of displacement gauges 401 located above and below respectively press against the lower surface of the upper pressing plate 102 and the upper surface of the lower pressing plate 103. The displacement gauge 401 is installed on the mounting arm of the displacement gauge bracket 403. The displacement gauge bracket 403 includes a vertically arranged mounting rod, and a mounting arm that moves along the mounting rod is installed on the mounting rod. As the displacement gauge moves, the mounting arm moves up and down along the mounting rod. The displacement gauge 401 is electrically connected to the displacement acquisition instrument 402. The displacement gauge 401 and the connection displacement acquisition instrument 402 collect the distance between the upper pressing plate 102 and the lower pressing plate 103 and store the test data.
[0028] In use, rock wool 8 is laid on the lower pressing plate 103 for heat insulation. The two half furnace bodies of the high-temperature furnace are installed in the rigid frame 6, and the two half furnace bodies 201 on the left and right sides can move along the smooth crossbar guide rails. Install the basalt fiber product 3. Above the lower pressing plate 103, a water-cooling plate 501, a lower support 7, and the basalt fiber product 3 are arranged from bottom to top in sequence. Above the basalt fiber product 3, an upper support 7 and a water-cooling plate 501 are provided. Connect the water-cooling plate to the water pipe. Dock the sliding half furnace body 201 and close the buckle 202 to enclose the high-temperature furnace. Subsequently, start the loading device to move the upper pressing plate 102 downward, that is, synchronously drive the rotating vertical rod 101, and the upper pressing plate 102 moves downward along the rotating vertical rod 101 until it slightly contacts the surface of the upper water-cooling plate 501. Install the displacement gauge 401 on the mounting arm of the displacement gauge support 403, and adjust the positions of the mounting arm of the displacement gauge support and the mounting rod of the displacement gauge support 7. While using two displacement gauges 401 to hold the upper pressing plate 102, the other two displacement gauges 401 hold the lower pressing plate 103. At this time, the distance between a pair of displacement gauges 401 is the original distance. Turn on the circulating water pump 504 to fill the water-cooling plate 501 with cold water. Turn on the temperature controller 204 and adjust it to the required test temperature. After the basalt fiber product 3 reaches the specified temperature, the constant temperature switch module of the temperature controller 204 shows green, and the experiment can start. Turn on the loading power source 104, push the lower pressing plate 103 upward, and transfer the load to the basalt fiber product 3 through the water-cooling plate 501 and the lower support 7 in sequence. Observe the experimental process through the observation window 206, and use the displacement gauge 401 and the displacement acquisition instrument 402 to collect and store the test results to obtain the mechanical properties at high temperatures.
[0029] The scope of protection claimed by the present utility model is not limited to the above specific embodiments. Moreover, for those skilled in the art, the present utility model can have various deformations and modifications. Any modification, improvement, and equivalent replacement made within the concept and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A high temperature displacement measuring device for basalt fiber products, characterized in that: The loading device comprises a loading device, the loading device comprises a pair of rotating vertical rods (101) whose bottoms are supported on the ground, an upper pressing plate (102) is connected to the upper parts of the two rotating vertical rods (101), a lower pressing plate (103) is arranged directly below the upper pressing plate (102), the lower pressing plate (103) is supported by a loading power source (104), a basalt fiber product (3) is installed on the lower pressing plate (103) below the upper pressing plate (102) through a support (7), a high-temperature furnace is mounted on the outside of the basalt fiber product (3), and the high-temperature furnace comprises two The two half furnace bodies (201) are buckled together, and the two half furnace bodies (201) are slidably mounted on the crossbar track of the rigid frame (6); an observation window (206) is opened on the side wall of the high-temperature furnace, and the rigid frame (6) is supported on the ground around the lower pressing plate (103); the lower surface of the upper pressing plate (102) and the lower surface of the upper pressing plate (102) are directly against a pair of displacement meters (401), and the displacement meters (401) are mounted on the mounting arm of the displacement meter bracket (403), and the displacement meter (401) is electrically connected to the displacement acquisition instrument (402).
2. The high temperature displacement measuring device for basalt fiber products according to claim 1, characterized in that: The support (7) comprises an upper support (7) and a lower support (7); a water circulation cooling system is provided below the lower support (7) and above the upper support (7); the water circulation cooling system comprises two water cooling disks (501); the two water cooling disks (501) are respectively welded to the lower surface of the lower support (7) and the upper surface of the upper support (7); the inner cavity of the water cooling disk (501) is connected to a water tank (503) via a water pipe (502); and a circulating water pump (504) is provided on the water inlet water pipe (502).
3. The high temperature displacement measuring device for basalt fiber products according to claim 2, characterized in that: The upper surface of the lower pressure plate (103) is paved with rock wool (8), and a water cooling plate welded to the lower surface of the lower support (7) is placed on the rock wool (8).
4. The high temperature displacement measuring device for basalt fiber products according to claim 1, characterized in that: A temperature display (205) for displaying the temperature inside the furnace is provided on the side wall of one half furnace body (201), and heating units (203) are evenly arranged on the furnace wall of the other half furnace body (201), wherein the heating units (203) are electrically connected to a temperature controller (204).
5. The high temperature displacement measuring device for basalt fiber products according to claim 1, characterized in that: The upper and lower surfaces of the high-temperature furnace are both provided with openings through which the support (7) passes, and the opening is arranged between the half furnace bodies (201) located on the left and right sides, and the connecting edges of the half furnace bodies (201) on the left and right sides are provided with buckles (202) that cooperate with each other.
6. The high temperature displacement measuring device for basalt fiber products according to claim 1, characterized in that: The displacement meter bracket (403) comprises a vertically arranged mounting rod, on which a mounting arm movable along the mounting rod is mounted.
7. The high temperature displacement measuring device for basalt fiber products according to claim 1, characterized in that: The rigid frame (6) comprises vertically arranged upright poles, a pair of horizontal crossbar tracks are welded between two upright poles on the same side, the crossbar track located at the bottom is higher than the rock wool (8), and the crossbar track located at the top is higher than the top of the half furnace body (201).
8. The high temperature displacement measuring device for basalt fiber products according to claim 1, characterized in that: The support (7) comprises a cylindrical steel block, and a rectangular parallelepiped steel block is welded to the end surface of the cylindrical steel block.