Concrete dry shrinkage and temperature shrinkage testing device
By incorporating components such as heating resistance wires, water-cooled pipes, and cooling fans into the concrete drying shrinkage and thermal shrinkage testing device, rapid temperature adjustment and automated control are achieved, solving the problems of long testing time and low efficiency in existing testing methods, and improving testing efficiency and accuracy.
Patent Information
- Application Number
- CN202520437311.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-13
AI Technical Summary
Existing methods for testing the drying and thermal shrinkage of concrete are time-consuming and inefficient.
The test chamber is equipped with heating resistance wires and water cooling pipes, and the top cover is equipped with heat dissipation channels and cooling fans. It also features temperature sensors, data acquisition modules, and controllers to achieve rapid temperature adjustment and automated control.
Significantly reduce testing time, improve work efficiency, and enhance the accuracy and security of test results.
Smart Images
Figure CN223910928U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of building material performance detection, in particular to a concrete dry shrinkage and temperature shrinkage testing device. BACKGROUND
[0002] As one of the most important building materials, the quality of concrete directly affects the safety and service life of buildings. In order to evaluate the quality of concrete, it is necessary to detect the dry shrinkage and temperature shrinkage performance of concrete.
[0003] The current common concrete dry shrinkage and temperature shrinkage testing method generally has the problems of long time consumption and low efficiency, and there is room for improvement. CONTENT OF THE UTILITY MODEL
[0004] In view of the deficiencies of the prior art, the present application provides a concrete dry shrinkage and temperature shrinkage testing device, which has the advantages of being able to quickly adjust the temperature of the test environment, greatly reducing the test time, improving the work efficiency, etc., and solves the problem of long time consumption and low efficiency of the current common concrete dry shrinkage and temperature shrinkage testing method.
[0005] To achieve the above purpose, the present application provides the following technical scheme: a concrete dry shrinkage and temperature shrinkage testing device, comprising a test box, the inside of the test box is provided with equidistantly arranged heating resistance wires, the inside of the test box is provided with a water cooling pipe, the top end of the test box is hingedly connected with a top cover, the inside of the top cover is provided with a heat dissipation channel, the inside of the heat dissipation channel is provided with a heat dissipation fan, the front of the test box is provided with a temperature sensor, the front of the test box is provided with a data acquisition module, the front of the test box is provided with a controller, and the inside of the test box is provided with four displacement sensors.
[0006] Through the above scheme, since the current common concrete dry shrinkage and temperature shrinkage testing method generally has the problems of long time consumption and low efficiency, by arranging the heating resistance wires, the water cooling pipe in the inside of the test box, and arranging the heat dissipation channel and the heat dissipation fan on the top cover, the temperature of the test environment can be quickly adjusted, the test time is greatly reduced, and the work efficiency is improved. By arranging the displacement sensor, the data acquisition module, and the controller, the operation process is simplified, and the accuracy of the test result is improved.
[0007] Further, the heating resistance wires are arranged on one side of the inner wall of the test box, and the heating resistance wires are arranged in a serpentine shape.
[0008] Through the above scheme, the heating resistance wires arranged in a serpentine shape increase the arrangement area of the heating resistance wires in the inside of the test box, ensure the uniform distribution of heat in the test box, and improve the heating efficiency and the uniformity of heating.
[0009] Further, the two ends of the water cooling pipe are respectively provided with a water inlet and a water outlet, and the water cooling pipe is arranged in a serpentine shape.
[0010] Through the above scheme, the water inlet and the water outlet can promote the circulation of cold water inside the water-cooled pipe, and the serpentine arrangement increases the contact area of the water-cooled pipe with the test box, thereby improving the cooling efficiency.
[0011] Further, the top end of the heat dissipation channel is provided with a baffle, the baffle is fixedly connected with the heat dissipation channel through bolts, and the inside of the baffle is provided with equally spaced ventilation holes.
[0012] Through the above scheme, the baffle can shield the heat dissipation fan in the heat dissipation channel, improve the safety of the heat dissipation fan during operation, and the ventilation holes on the baffle can meet the air circulation, so that the hot air in the test box can be discharged, and the experimental environment in the test box can be cooled.
[0013] Further, the inner wall of the test box is fixedly connected with a guard plate, the outer surfaces of the displacement sensors are respectively fixedly connected with the inner walls of the guard plates, and the guard plate is provided with equally spaced strip holes in the inside.
[0014] Through the above scheme, the guard plate can shield the heating resistance wire, avoid touching the resistance wire during the test operation, and improve the safety of the operation, and the strip holes on the guard plate are helpful for temperature propagation.
[0015] Further, the inside of the top cover is fixedly connected with a viewing window, and the outer circumferential surface of the heat dissipation channel is fixedly connected with the inner wall of the viewing window.
[0016] Through the above scheme, the staff can observe the internal situation of the test box through the viewing window, and real-time observation of the test process is facilitated.
[0017] Further, the back of the test box is fixedly connected with two support arms.
[0018] Through the above scheme, the opened top cover can be supported by the support arms, so as to avoid excessive opening of the top cover and cause collision between the heat dissipation channel and the outer wall of the test box.
[0019] Further, the bottom surface of the test box is fixedly connected with a base, the bottom surface of the base is fixedly connected with a support plate, and the bottom surface of the support plate is fixedly connected with a rubber pad.
[0020] Through the above scheme, the base and the support plate can stably support the test box, improve the stability of the test box during operation, and the rubber pad at the bottom of the support plate can increase the friction between the placed platform, and also has a certain buffering effect, further improving the stability of the test box.
[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:
[0022] The concrete dry shrinkage and temperature shrinkage testing device can quickly adjust the temperature of the test environment, greatly reduces the test time, improves the work efficiency, and solves the problems of long time consumption and low efficiency of the existing concrete dry shrinkage and temperature shrinkage testing method. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a whole three-dimensional structural diagram of the present application;
[0024] Figure 2 It is a top cover structure diagram of the present application;
[0025] Figure 3 It is a test box structure diagram of the present application;
[0026] Figure 4 It is a partial top view structure diagram of the present application.
[0027] In the figure:
[0028] 1, test box; 2, heating resistance wire; 3, water cooling pipe; 4, top cover; 5, heat dissipation channel; 6, heat dissipation fan; 7, baffle; 8, temperature sensor; 9, controller; 10, displacement sensor; 11, guard plate; 12, visual window; 13, support arm; 14, base; 15, support plate; 16, data acquisition module. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0030] Please refer to Figure 1 , Figure 2 and Figure 3 A concrete dry shrinkage and temperature shrinkage testing device in the embodiments comprises a test box 1, the inside of the test box 1 is provided with equidistantly arranged heating resistance wires 2, the inside of the test box 1 is provided with a water cooling pipe 3, the top end of the test box 1 is hingedly connected with a top cover 4, the inside of the top cover 4 is provided with a heat dissipation channel 5, the inside of the heat dissipation channel 5 is provided with a heat dissipation fan 6, the front of the test box 1 is provided with a temperature sensor 8, the front of the test box 1 is provided with a data acquisition module 16, the front of the test box 1 is provided with a controller 9, and the inside of the test box 1 is provided with four displacement sensors 10.
[0031] Please refer to Figure 2 ,Figure 3 and Figure 4 The heating resistance wire 2 is arranged on one side of the inner wall of the test box 1, and the heating resistance wire 2 is arranged in a serpentine shape. The serpentine arrangement of the heating resistance wire 2 increases the arrangement area of the heating resistance wire 2 in the test box 1, ensures the uniform distribution of heat in the test box 1, and improves the heating efficiency and uniformity.
[0032] Please refer to Figure 2 , Figure 3 and Figure 4 The two ends of the water-cooled pipe 3 are respectively provided with a water inlet and a water outlet, and the water-cooled pipe 3 is arranged in a serpentine shape. The water inlet and the water outlet can promote the circulation of cold water in the water-cooled pipe 3, and the serpentine arrangement increases the contact area of the water-cooled pipe 3 with the test box 1, thereby improving the cooling efficiency.
[0033] Please refer to Figure 1 The top end of the heat dissipation channel 5 is provided with a baffle 7, the baffle 7 is fixedly connected with the heat dissipation channel 5 through bolts, and the inside of the baffle 7 is provided with equally spaced ventilation holes. The baffle 7 can shield the heat dissipation fan 6 in the heat dissipation channel 5, improve the safety of the heat dissipation fan 6 during operation, and the ventilation holes on the baffle 7 can meet the air circulation, so that the hot air in the test box 1 can be discharged, and the experimental environment in the test box 1 can be cooled.
[0034] Please refer to Figure 2 and Figure 4 The inner wall of the test box 1 is fixedly connected with a guard plate 11, and the outer surface of the displacement sensor 10 is fixedly connected with the inner wall of the guard plate 11. The inside of the guard plate 11 is provided with equally spaced long holes. The guard plate 11 can shield the heating resistance wire 2, avoid touching the resistance wire during the test operation, improve the safety of the operation, and the long holes on the guard plate 11 are helpful for temperature propagation.
[0035] Please refer to Figure 1 and Figure 2 The inside of the top cover 4 is fixedly connected with a viewing window 12, and the outer circumferential surface of the heat dissipation channel 5 is fixedly connected with the inner wall of the viewing window 12. The staff can observe the inside of the test box 1 through the viewing window 12, which is convenient for real-time observation of the test process.
[0036] Please refer to Figure 1 and Figure 2 The back of the test box 1 is fixedly connected with two support arms 13, which can support the opened top cover 4, avoid excessive opening of the top cover 4, and cause collision between the heat dissipation channel 5 and the outer wall of the test box 1.
[0037] Please refer to Figure 1 and Figure 2The bottom surface of the test box 1 is fixedly connected with the base 14, the bottom surface of the base 14 is fixedly connected with the support plate 15, the bottom surface of the support plate 15 is fixedly connected with the rubber pad, the base 14 and the support plate 15 can stably support the test box 1, improve the stability of the test box 1 during operation, the rubber pad at the bottom of the support plate 15 can increase the friction between the platform and the support plate 15, and has a certain buffering and damping effect, further improving the stability of the test box 1.
[0038] The concrete dry shrinkage and temperature shrinkage testing device in the embodiment can quickly adjust the temperature of the test environment, greatly reduces the test time, improves the work efficiency, simplifies the operation process through the displacement sensor 10, the data acquisition module 16 and the controller 9, improves the accuracy of the test result, and solves the problems of long test time and low efficiency of the existing concrete dry shrinkage and temperature shrinkage testing method.
[0039] It should be noted that the heating resistance wire 2 can be made of stainless steel, which has good high temperature resistance and stability, the water cooling pipe 3 can be made of copper alloy, which has good heat conduction effect and is not easy to corrode, the cooling fan 6 is driven by a low noise direct current motor to ensure a quiet test environment, the displacement sensor 10 can be a laser range finder with a resolution of microns to ensure the high accuracy of the test data, the water inlet and outlet of the water cooling pipe 3 can be connected with an external water supply device, and the external water supply device is controlled by the controller 9 to control the on-off of the cold water, and then the test box 1 is automatically cooled.
[0040] The working principle of the above embodiment is as follows:
[0041] The temperature sensor 8 can detect the test temperature in real time, the displacement sensor 10 can monitor and record the length change of the concrete sample in real time, the data acquisition module 16 can collect the data feedback from each sensor and transmit to the controller 9 for processing, the controller 9 can not only regulate the power of the heating resistance wire 2, but also automatically adjust the opening time of the water cooling pipe 3 and the cooling fan 6 according to the preset program, realize the whole process automation management, when the concrete drying shrinkage and temperature shrinkage test is carried out, the prefabricated concrete sample is placed in the central position of the test box 1, the required test parameters are set through the controller 9, including the target temperature range, the temperature rising and falling rate, etc., after the device is started, the heating resistance wire 2 starts heating, when the set value is reached, the displacement sensor 10 starts recording the initial length of the sample, then the heating resistance wire 2 is closed, the water cooling pipe 3 starts to inject water to reduce the temperature, and at the same time the cooling fan 6 starts to work, the hot air in the test box 1 is discharged from the cooling channel 5 to the outside, and the test box 1 is cooled down, during the cooling period, the displacement sensor 10 continuously monitors the length change of the sample and feeds back the detection data to the data acquisition module 16, finally, by comparing the size difference of the sample at different temperature points, the drying shrinkage and temperature shrinkage coefficient is calculated.
[0042] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.
[0043] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A concrete drying and temperature shrinkage testing device comprising a test chamber (1), characterised in that: The inside of the test box (1) is equipped with equidistantly arranged heating resistance wires (2), the inside of the test box (1) is equipped with a water cooling pipe (3), the top end of the test box (1) is hingedly connected with a top cover (4), the inside of the top cover (4) is equipped with a heat dissipation channel (5), the inside of the heat dissipation channel (5) is equipped with a heat dissipation fan (6), the front face of the test box (1) is equipped with a temperature sensor (8), the front face of the test box (1) is equipped with a data acquisition module (16), the front face of the test box (1) is equipped with a controller (9), and the inside of the test box (1) is equipped with four displacement sensors (10).
2. The apparatus for testing the drying and temperature shrinkage of concrete according to claim 1, characterized in that: The heating resistance wires (2) are arranged on one side of the inner wall of the test box (1) respectively, and the heating resistance wires (2) are arranged in a serpentine shape.
3. The apparatus for testing the drying and temperature shrinkage of concrete according to claim 1, wherein: Both ends of the water cooling pipe (3) are provided with a water inlet and a water outlet respectively, and the water cooling pipe (3) is arranged in a serpentine shape.
4. The apparatus for testing drying and thermal shrinkage of concrete according to claim 1, wherein: The top end of the heat dissipation channel (5) is provided with a baffle (7), the baffle (7) is fixedly connected with the heat dissipation channel (5) through bolts, and the inside of the baffle (7) is provided with equidistantly arranged ventilation holes.
5. The apparatus for testing drying and thermal shrinkage of concrete according to claim 1, wherein: The inner wall of the test box (1) is fixedly connected with a guard plate (11), the outer surfaces of the displacement sensors (10) are fixedly connected with the inner wall of the guard plate (11) respectively, and the inside of the guard plate (11) is provided with equidistantly arranged long holes.
6. The apparatus for testing drying and thermal shrinkage of concrete according to claim 1, wherein: The inside of the top cover (4) is fixedly connected with a viewing window (12), and the outer circumferential surface of the heat dissipation channel (5) is fixedly connected with the inner wall of the viewing window (12).
7. The apparatus for testing drying and thermal shrinkage of concrete according to claim 1, wherein: The back of the test box (1) is fixedly connected with two support arms (13).
8. The apparatus for testing drying and thermal shrinkage of concrete according to claim 1, wherein: The bottom of the test box (1) is fixedly connected with a base (14), the bottom of the base (14) is fixedly connected with a support plate (15), and the bottom of the support plate (15) is fixedly connected with a rubber pad.