Water conservancy project material anti-permeability performance automatic detection device and detection method

Abstract

The application relates to the field of hydraulic engineering, in particular to a water conservancy engineering material anti-permeability automatic detection device and a detection method. The device comprises a rack, a workbench arranged on the rack, a loading assembly arranged on the workbench, a detection cylinder and a loading cylinder, a mesh bag arranged at the bottom of the loading cylinder, a humidity detector arranged below the mesh bag in the detection cylinder, an elastic support structure arranged on the detection cylinder to provide elastic support for the loading cylinder, and a vibration driving assembly arranged on the detection cylinder to drive the loading cylinder to generate a vibration effect. The vibration driving assembly is used for applying regular vibration to the loading cylinder, simulating a vibrating and compacting process in actual construction, effectively reducing internal gaps and air in the sample, and enhancing the consistency and compactness of the sample. Meanwhile, a hydraulic cylinder is used for driving a compacting assembly to vertically move and press the sample, further ensuring the compactness and consistency of the structure, and realizing efficient and accurate anti-permeability evaluation.

Description

TECHNICAL FIELD

[0001] The application relates to the field of hydraulic engineering, in particular to an anti-permeability performance automatic detection device and method for hydraulic engineering materials. BACKGROUND

[0002] In hydraulic engineering, the anti-permeability performance of materials is one of the key factors to ensure the durability and safety of structures. The traditional method for detecting the anti-permeability strength of concrete usually involves exposing the concrete sample to the environment and observing the water penetration by means of top water injection. This method is not only affected by the external environmental temperature and humidity, resulting in deviation of the results, but also lacks precise control over the water quantity and uniformity of water flow, making it difficult to accurately evaluate the actual anti-permeability capacity of the concrete.

[0003] The currently disclosed anti-permeability performance detection device for anti-permeability materials for hydraulic engineering has the problems of lack of consistency and uniformity of samples, and inability to accurately reflect the anti-permeability performance of materials under real working conditions.

[0004] The above detection device places paper on the placement table, then places the material to be tested on the top surface of the paper, and injects water into the material, combined with the use of a humidity sensor, to directly detect the humidity of the paper and thus determine the anti-permeability degree of the material. However, the material is not compacted before water injection for anti-permeability testing, making it difficult to ensure the consistency and uniformity of each sample, resulting in a lack of repeatability and comparability of test results. Secondly, the actual mechanical compaction conditions in construction are not fully simulated, and the anti-permeability performance of the material under real working conditions cannot be accurately reflected. Therefore, there is a need for an anti-permeability performance automatic detection device that can accurately simulate actual construction conditions and ensure the consistency and uniformity of samples. SUMMARY

[0005] In view of the problems existing in the prior art, the water conservancy engineering material anti-permeability automatic detection device is provided, a regular vibration is applied to the material loading cylinder through the vibration driving assembly, the vibration compaction process in the actual construction is simulated, the internal voids and air of the sample are effectively reduced, and the consistency and tightness of the sample are enhanced. Meanwhile, the hydraulic cylinder drives the compaction assembly to move vertically and press the sample, the structure is further ensured to be compact and consistent, and efficient and accurate anti-permeability evaluation is realized.

[0006] To solve the problems in the prior art, the water conservancy engineering material anti-permeability automatic detection device is provided, which comprises a rack, a workbench is arranged on the rack, a material loading assembly for loading concrete is arranged on the workbench, the material loading assembly comprises a detection cylinder fixedly installed on the workbench and a material loading cylinder detachably arranged on the detection cylinder, a water outlet is formed in the bottom of the detection cylinder, the bottom of the material loading cylinder is a mesh bag, a humidity detector capable of detecting the anti-permeability of concrete is arranged below the mesh bag in the detection cylinder, the material loading cylinder can move vertically in the detection cylinder, an elastic support structure for providing elastic support for the material loading cylinder is arranged on the detection cylinder, and a vibration driving assembly for driving the material loading cylinder to generate a vibration effect is further arranged on the detection cylinder. When the material loading cylinder vibrates, the concrete sample in the material loading cylinder is in a gradually distributed and uniform state, so that the voids in the concrete sample are reduced and air is excluded.

[0007] Preferably, a compaction assembly capable of extruding the concrete sample is arranged at the notch of the material loading cylinder, a hydraulic cylinder for driving the compaction assembly to move vertically towards the material loading cylinder is arranged on the rack, the hydraulic cylinder has a pressing rod connected with the compaction assembly, and when the concrete sample is uniformly distributed in the material loading cylinder and extruded by the compaction assembly, the concrete sample is in a compacted state simulating the actual construction condition.

[0008] Preferably, the compaction assembly comprises an extrusion shell and a movable pressing plate arranged in the extrusion shell, the extrusion shell has a fixed pressing plate, the movable pressing plate and the fixed pressing plate jointly form a pressing surface, and the extrusion shell has a water injection cavity. When the movable pressing plate is away from the fixed pressing plate, a drainage gap in communication with the water injection cavity is formed between the movable pressing plate and the fixed pressing plate.

[0009] Preferably, a rubber ring capable of being in close contact with the inner wall of the material loading cylinder is arranged on the outside of the extrusion shell. When the extrusion shell is pressed into the material loading cylinder, the rubber ring is in a compressed state in contact with the material loading cylinder, so that the gap between the extrusion shell and the material loading cylinder is sealed during the compaction process.

[0010] Preferably, the elastic support structure has a support frame plate arranged inside the detection cylinder for supporting the material loading cylinder, a vibration spring is fixedly connected between the support frame plate and the detection cylinder, and the humidity detector is arranged on the support frame plate.

[0011] Preferably, the bottom of the mesh bag is provided with a water-absorbing paper that is attached to the mesh bag and can be detected by the humidity detector, and the support frame plate is provided with a step for placing the water-absorbing paper, and the support frame plate is provided with a supporting plate for supporting the paper.

[0012] Preferably, the upper end edge of the material loading cylinder has an outwardly extending ring edge, the upper end of the detection cylinder is provided with an elastic layer for supporting the ring edge, and the detection cylinder is provided with a vibration driving assembly around the ring edge for driving the vibration of the material loading cylinder.

[0013] Preferably, a gap is left between the material loading cylinder and the detection cylinder, and the material loading cylinder and the detection cylinder are in rolling contact with the rolling balls.

[0014] Preferably, the vibration driving assembly has a push rod that can move towards the material loading cylinder, the detection cylinder is provided with a guide sleeve for the movement of the push rod, and the ring edge of the material loading cylinder has a slope that cooperates with the push rod, when the push rod pushes the ring edge along the slope, the material loading cylinder is in a depressed state, and the vibration spring is in a compressed state.

[0015] The application also provides an automatic detection method for the impermeability of hydraulic engineering materials, comprising the following steps:

[0016] S1, placing the concrete sample in the material loading cylinder, and vibrating the material loading cylinder by the vibration driving assembly to ensure uniform distribution of the concrete sample and to remove air;

[0017] S2, using the hydraulic cylinder to drive the compaction assembly to press down, and extruding the concrete sample in the material loading cylinder to simulate the compaction state under actual construction conditions;

[0018] S3, attaching the water-absorbing paper to the bottom of the mesh bag and monitoring the humidity change of the concrete sample by the humidity detector to evaluate the impermeability.

[0019] The beneficial effects of the present application compared with the prior art are:

[0020] 1. The present application applies regular vibration to the material loading cylinder through the vibration driving assembly, simulates the vibrating and compacting process in actual construction, effectively reduces the internal voids and air in the sample, and enhances the consistency and tightness of the sample. Subsequently, in the impermeability detection stage, water penetrates the concrete sample slowly and steadily under the action of gravity, and a humidity detector is used to monitor and record the penetration time and water volume and other key data in real time. Not only can the impermeability of the concrete sample be comprehensively understood, but also the influence of various factors on the impermeability can be explored through repeated tests of the same group of samples under different variable conditions, thereby improving the detection efficiency and accuracy.

[0021] 2. The present application simulates the compaction process under actual construction conditions by moving the compaction assembly vertically towards the loading cylinder and applying pressure to the concrete sample, ensuring that the internal structure of the concrete is tight and consistent, further reducing the presence of voids and air. During this process, the movable pressing plate is controlled to move closer to or away from the fixed pressing plate, forming a complete pressing surface or drainage gap, which facilitates uniform water penetration during subsequent impermeability testing.

[0022] In addition, the rubber ring provided outside the extrusion shell is in close contact with the inner wall and is compressed during the pressing process, effectively sealing the gap and preventing water leakage and sample entry into the gap, maintaining the closedness of the experimental environment and providing reliable guarantee for subsequent accurate evaluation of impermeability.

[0023] 3. The water-absorbing paper placed at the bottom of the mesh bag is tightly attached to the mesh bag, and the tray is moved to contact the water-absorbing paper to prevent the water-absorbing paper from being broken during the compaction process of the concrete sample. Effective management of the impermeability test process of the concrete sample is achieved, avoiding measurement errors caused by paper damage, and ensuring that the humidity detector can accurately record the amount of water penetrating through the paper, thereby improving the accuracy of the impermeability test results. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the three-dimensional structure of the water conservancy engineering material impermeability automatic detection device.

[0025] Figure 2 is a partial three-dimensional structure sectional view of the water conservancy engineering material impermeability automatic detection device.

[0026] Figure 3 is a schematic diagram of the three-dimensional structure of the water conservancy engineering material impermeability automatic detection device.

[0027] Figure 4 is a schematic diagram of the three-dimensional structure of the water conservancy engineering material impermeability automatic detection device.

[0028] Figure 5 is a schematic diagram of the three-dimensional structure of the water conservancy engineering material impermeability automatic detection device.

[0029] Figure 6 is a schematic diagram of the three-dimensional structure of the water conservancy engineering material impermeability automatic detection device.

[0030] Figure 7 is a schematic diagram of the three-dimensional structure of the water conservancy engineering material impermeability automatic detection device.

[0031] Figure 8It is the local stereo structure section view of compaction assembly of water conservancy engineering material impermeability automatic detection device.

[0032] Figure 9 It is the local stereo structure section view of humidity detector of water conservancy engineering material impermeability automatic detection device.

[0033] Figure 10 It is Figure 7 The enlarged schematic view at A.

[0034] The figure mark is: 1 - frame;11 - workbench;12 - hydraulic cylinder;121 - pressure rod;1211 - water injection channel;2 - load assembly;21 - detection cylinder;211 - water outlet;2111 - water storage cavity;2112 - through hole;212 - elastic support structure;2121 - support frame plate;2122 - vibration spring;213 - vibration drive assembly;2131 - push rod;2132 - guide sleeve;2133 - straight push driver;22 - load cylinder;221 - net bag;222 - ring edge;2221 - elastic layer;2222 - slope;223 - ball;3 - humidity detector;31 - water absorption paper;32 - step;33 - supporting plate;331 - support driver;332 - guide rod;333 - second reset spring;4 - compaction assembly;41 - extrusion shell;411 - water injection cavity;412 - pressure plate driver;413 - rubber ring;42 - movable pressure plate;421 - first reset spring;43 - fixed pressure plate. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application will be described in further detail below in combination with the drawings and specific embodiments.

[0036] Referring to Figures 1-7 As shown in the figure, the water conservancy engineering material impermeability automatic detection device comprises a frame 1, a workbench 11 is arranged on the frame 1, a load assembly 2 for bearing concrete is arranged on the workbench 11, the load assembly 2 comprises a detection cylinder 21 fixedly installed on the workbench 11 and a load cylinder 22 detachably arranged on the detection cylinder 21, a water outlet 211 is arranged at the bottom of the detection cylinder 21, the bottom of the load cylinder 22 is a net bag 221, a humidity detector 3 capable of detecting the impermeability of concrete is arranged below the net bag 221 in the detection cylinder 21, the load cylinder 22 can move vertically in the detection cylinder 21, an elastic support structure 212 is arranged on the detection cylinder 21 to provide elastic support for the load cylinder 22, and a vibration drive assembly 213 is further arranged on the detection cylinder 21 to drive the load cylinder 22 to generate vibration effect, when the load cylinder 22 vibrates, the concrete sample in the load cylinder 22 is in a gradually distributed uniform state, so that the voids in the concrete sample are reduced and air is excluded.

[0037] In the process of automatic detection of water conservancy engineering material impermeability, first of all, the concrete samples to be tested need to be prepared. The operator places these samples in the loading cylinder 22, which has a bottom in the form of a mesh bag 221, allowing water to freely penetrate through the concrete samples and eventually be discharged from the water outlet 211 at the bottom of the detection cylinder 21. This is crucial for accurately assessing the impermeability of the concrete sample, ensuring that water can pass through the sample uniformly and without obstruction, thereby providing more realistic and reliable data.

[0038] The vibration drive assembly 213 is started to produce regular vibration effects on the loading cylinder 22, which not only helps to gradually distribute the internal structure of the concrete sample uniformly, but also effectively reduces the voids in the sample and expels air. By simulating the vibrating and compacting process that the concrete may experience during actual construction, the compactness and consistency of the concrete sample are greatly enhanced.

[0039] After the vibration treatment is completed, the specific impermeability detection phase begins. Water is injected into the concrete sample, relying on the action of gravity to allow the water to slowly and steadily penetrate the concrete sample, accurately reflecting the true impermeability of the concrete sample under the action of no additional external force. In this process, the humidity detector 3 located below the mesh bag 221 monitors and records the time and water volume of the water that penetrates through the concrete sample in real time, providing a solid foundation for subsequent data analysis.

[0040] As the water gradually penetrates through the concrete sample, the humidity detector 3 continuously collects data, including but not limited to penetration rate, cumulative penetration volume, and other key indicators, which are extremely important for a comprehensive understanding of the impermeability of the concrete sample. In addition, in order to obtain more comprehensive evaluation results, the same group of concrete samples may be repeatedly tested multiple times, with some variables changed each time, such as sample thickness, curing time, or the addition of different additives, etc. This allows us to explore the specific effects of various factors on impermeability, not only deepening our understanding of the basic characteristics of the tested concrete sample, but also providing scientific basis for further optimizing material formulations and improving production processes.

[0041] Referring to Figures 1-7 As shown in the figure, the loading cylinder 22 is provided with a compaction assembly 4 capable of extruding the concrete sample, and the rack 1 is provided with a hydraulic cylinder 12 for driving the compaction assembly 4 to move vertically towards the loading cylinder 22, the hydraulic cylinder 12 has a pressing rod 121 connected with the compaction assembly 4. When the concrete sample is uniformly distributed in the loading cylinder 22 and extruded by the compaction assembly 4, the concrete sample is in a compacted state simulating the actual construction conditions.

[0042] In the process of preparing the concrete sample, once the concrete is evenly distributed in the loading cylinder 22, the compaction assembly 4 is driven to move vertically towards the loading cylinder 22 by the hydraulic cylinder 12 provided on the frame 1, the hydraulic cylinder 12 is connected with the pressing rod 121 of the compaction assembly 4, when the hydraulic cylinder 12 is started, the pressing rod 121 pushes the compaction assembly 4 to move downward and exerts pressure on the concrete sample in the loading cylinder 22, simulating the compaction process under the actual construction condition, the extrusion operation ensures that the internal structure of the concrete sample is more compact and consistent, reduces the existence of voids and air, so that the sample is in a fully compacted state, thereby more accurately reflecting its performance in the true construction environment.

[0043] Referring to Figures 1-8 As shown, the compaction assembly 4 comprises an extrusion shell 41 and a movable pressing plate 42 provided therein, the extrusion shell 41 has a fixed pressing plate 43, the movable pressing plate 42 and the fixed pressing plate 43 jointly constitute a pressing surface, the extrusion shell 41 has a water injection cavity 411, when the movable pressing plate 42 is away from the fixed pressing plate 43, a drainage gap is formed between them which is communicated with the water injection cavity 411.

[0044] The pressing rod 121 is provided with a water injection channel 1211 communicated with the water injection cavity 411.

[0045] The inner side of the extrusion shell 41 is provided with a pressing plate driver 412 for driving the movable pressing plate 42 to move relative to the fixed pressing plate 43.

[0046] The pressing plate driver 412 is specifically an electromagnetic driver, the electromagnetic driver has a fixed electromagnet fixedly connected with the extrusion shell 41 and a movable electromagnet fixedly connected with the movable pressing plate 42, a first reset spring 421 is arranged between the movable pressing plate 42 and the extrusion shell 41, when the movable pressing plate 42 contacts with the fixed pressing plate 43 to close the drainage gap, the first reset spring 421 is in a stretched state.

[0047] When the compaction operation is needed, the electromagnetic driver is started, wherein the fixed electromagnet and the movable electromagnet are electrified, prompting the movable pressing plate 42 to approach the fixed pressing plate 43 to form a complete pressing surface, so as to perform the compaction operation on the concrete sample.

[0048] When the predetermined compaction is completed, the electromagnetic driver controls the movable pressing plate 42 to be away from the fixed pressing plate 43 to form the drainage gap, water is introduced into the water injection cavity 411 through the water injection channel 1211 and flows into the concrete sample through the drainage gap, so as to test the impermeability of the concrete sample.

[0049] Referring to Figures 2-8As shown, the outer side of the extrusion shell 41 is provided with a rubber ring 413 capable of being in close contact with the inner wall of the loading cylinder 22. When the extrusion shell 41 is pressed into the loading cylinder 22, the rubber ring 413 is in a compressed state in contact with the loading cylinder 22, so that the gap between the extrusion shell 41 and the loading cylinder 22 is sealed during the compaction process.

[0050] When the compaction operation is performed, when the extrusion shell 41 is moved towards the loading cylinder 22 by the driving of the hydraulic cylinder 12 and is pressed into it, the rubber ring 413 provided on the outer side of the extrusion shell 41 is in close contact with the inner wall of the loading cylinder 22. As the extrusion shell 41 is further pressed in, the rubber ring 413 is compressed, thereby effectively sealing the gap between the extrusion shell 41 and the loading cylinder 22.

[0051] The sealing state ensures that water does not leak from the gap during the compaction process, and that the concrete sample does not enter the gap, maintaining the closedness of the experimental environment and providing a guarantee for accurate evaluation of the impermeability of the concrete sample. At the same time, the elasticity of the rubber ring 413 can restore to its original state when the extrusion shell 41 is reset, preparing for the next operation.

[0052] Referring to Figures 2-7 and Figure 9 As shown, the elastic support structure 212 has a support frame plate 2121 provided inside the detection cylinder 21 for supporting the loading cylinder 22. The support frame plate 2121 and the detection cylinder 21 are fixedly connected with a vibration spring 2122, and the humidity detector 3 is arranged on the support frame plate 2121.

[0053] The support frame plate 2121 and the detection cylinder 21 form a water storage cavity 2111 in communication with the water outlet 211, and the support frame plate 2121 is provided with a through hole 2112 in communication with the water storage cavity 2111.

[0054] Inside the detection cylinder 21, the support frame plate 2121 of the elastic support structure 212 provides support for the loading cylinder 22 and is fixedly connected with the detection cylinder 21 through the vibration spring 2122 to buffer vibration and maintain stability.

[0055] When the impermeability test is performed, the water permeating through the concrete sample will flow into the water storage cavity 2111 through the through hole 2112 and finally be discharged from the water outlet 211 at the bottom of the detection cylinder 21, ensuring that the water can flow in an orderly manner and facilitating the humidity detector 3 to accurately record the permeation data.

[0056] Referring to Figures 2-7 , Figure 9 and Figure 10As shown, the bottom of the mesh bag 221 is provided with a water-absorbing paper 31 which is attached to the mesh bag 221 and can be detected by the humidity detector 3, and the support frame plate 2121 is provided with a step 32 for placing the water-absorbing paper 31, and the support frame plate 2121 is provided with a supporting plate 33 for supporting the paper.

[0057] The supporting plate 33 can move towards or away from the paper, and the support frame plate 2121 is provided with a support driver 331 for driving the supporting plate 33 to move, and the supporting plate 33 is provided with a guide rod 332 extending downward through the support frame plate 2121, and the support frame plate 2121 is provided with a guide hole for the guide rod 332 to pass through.

[0058] The support driver 331 is specifically an electromagnetic driver, which has a fixed electromagnet fixedly connected to the support frame plate 2121 and a movable electromagnet fixedly connected to the guide rod 332, and the supporting plate 33 and the support frame plate 2121 are provided with a second reset spring 333, when the supporting plate 33 contacts the paper, the second reset spring 333 is in a stretched state, at this time the edge of the supporting plate 33 is attached to the step 32, when the supporting plate 33 moves away from the paper, a water flow gap is formed between the supporting plate 33 and the step 32 for water to flow to the through hole 2112.

[0059] When the water permeability test is performed, the water-absorbing paper 31 placed at the bottom of the mesh bag 221 is closely attached to the mesh bag 221 and can be detected by the humidity detector 3 on the support frame plate 2121, when the paper is supported, the electromagnetic driver is started, and the fixed electromagnet and the movable electromagnet are both electrified, pushing the supporting plate 33 to move towards the water-absorbing paper 31 until it contacts, at this time the second reset spring 333 is in a stretched state, ensuring that the edge of the supporting plate 33 is closely attached to the step 32 to prevent water from bypassing.

[0060] When it is necessary to form a water flow gap to facilitate water flowing to the through hole 2112 of the support frame plate 2121, the electromagnetic driver controls the supporting plate 33 to move away from the water-absorbing paper 31, so that a gap is formed between the supporting plate 33 and the step 32, allowing water permeating through the water-absorbing paper 31 to flow smoothly to the through hole 2112 of the support frame plate 2121, and in this process, the second reset spring 333 provides a guarantee for the reset of the supporting plate 33.

[0061] Referring to Figures 2-8 As shown, the upper end edge of the material loading cylinder 22 has an outwardly extending ring edge 222, the upper end of the detection cylinder 21 is provided with an elastic layer 2221 for supporting the ring edge 222, and the detection cylinder 21 is provided with one of the vibration driving assemblies 213 around the circumference for cooperating with the ring edge 222 to drive the material loading cylinder 22 to vibrate.

[0062] When the vibration driving assembly 213 is started, the ring edge 222 is subjected to a force, so that the carrier cylinder 22 is regularly vibrated. Due to the existence of the elastic layer 2221, not only the impact generated in the vibration process can be buffered, but also the carrier cylinder 22 can be stably vibrated when subjected to the force of the driving assembly, so as to effectively simulate the vibration and compaction of the concrete sample in the actual construction process, and provide more accurate and reliable experimental conditions for the subsequent impermeability test.

[0063] Referring to Figures 2-8 As shown, a gap is left between the carrier cylinder 22 and the detection cylinder 21, and the rolling contact between the carrier cylinder 22 and the detection cylinder 21 has the ball 223.

[0064] When the carrier cylinder 22 is driven to vibrate by external force, the ball 223 rolls in the gap between the two, reduces the friction resistance, and ensures that the carrier cylinder 22 can move smoothly, which not only helps to maintain the stability and flexibility of the carrier cylinder 22, but also prevents wear caused by direct friction, thereby prolonging the service life and ensuring the smooth progress of the experiment.

[0065] Referring to Figures 2-8 As shown, the vibration driving assembly 213 has a push rod 2131 capable of moving towards the carrier cylinder 22, the detection cylinder 21 is provided with a guide sleeve 2132 for the movement of the push rod 2131, and the ring edge 222 of the carrier cylinder 22 has a slope 2222 matched with the push rod 2131. When the push rod 2131 pushes the ring edge 222 along the slope 2222, the carrier cylinder 22 is in a pressed state, and the vibration spring 2122 is in a compressed state at this time.

[0066] The guide sleeve 2132 is provided with a straight push driver 2133 for driving the push rod 2131 to move.

[0067] The straight push driver 2133 is specifically an electromagnetic driver, and the electromagnetic driver has a fixed electromagnet fixedly connected with the guide sleeve 2132 and a movable electromagnet fixedly connected with the push rod 2131.

[0068] When the straight push driver 2133 is started, the fixed electromagnet and the movable electromagnet in the electromagnetic driver are electrified, which promotes the push rod 2131 to move along the guide sleeve 2132 and push the ring edge 222 along the slope 2222, so that the carrier cylinder 22 is pressed, and the vibration spring 2122 supporting the carrier cylinder 22 is in a compressed state at this time.

[0069] By adjusting the current direction of the electromagnetic driver, the moving direction of the push rod 2131 can be controlled, so that the push rod 2131 exits the ring edge 222, and under the action of the elastic layer 2221 and the vibration spring 2122, the material loading cylinder 22 is reset upwards, so that the accurate vibration effect is exerted on the material loading cylinder 22, and it is ensured that the material loading cylinder 22 can vibrate under controlled conditions, so as to simulate the actual construction environment of the concrete sample, and provide accurate data support for subsequent impermeability test.

[0070] The automatic detection method for the impermeability of the hydraulic engineering material is applied to the automatic detection device for the impermeability of the hydraulic engineering material described above, and comprises the following steps:

[0071] S1, the concrete sample is placed in the material loading cylinder 22, and the vibration driving assembly 213 is used to vibrate the material loading cylinder 22, so as to ensure that the concrete sample is uniformly distributed and air is removed;

[0072] S2, the hydraulic cylinder 12 is used to drive the compaction assembly 4 to press down, and the concrete sample in the material loading cylinder 22 is extruded to simulate the compaction state under the actual construction condition;

[0073] S3, the water absorption paper 31 is attached to the bottom of the net bag 221, and the humidity detector 3 is used to monitor the humidity change of the concrete sample, so as to evaluate the impermeability thereof.

[0074] The vibration driving assembly 213 is used to apply regular vibration to the material loading cylinder 22 in the application, the vibration and compaction process in the actual construction is simulated, the internal gap and air of the sample are effectively reduced, and the consistency and tightness of the sample are enhanced. Meanwhile, the hydraulic cylinder 12 is used to drive the compaction assembly 4 to vertically move and press the sample, the structure is further ensured to be compact and consistent, the water slowly penetrates the concrete sample under the action of gravity and acts on the water absorption paper 31 in the detection stage, and the humidity detector 3 is used to record the key data in real time. In the test process, the water absorption paper 31 is supported by the supporting plate 33, so as to prevent the paper from being damaged when not in contact with water. It is ensured that the humidity detector 3 can accurately record the penetration water amount, so as to improve the accuracy of the overall test result. The efficient and accurate impermeability evaluation is realized.

[0075] The above embodiments only express one or several embodiments of the application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the application, several modifications and improvements can be made, which belong to the protection scope of the application. Therefore, the protection scope of the application should be subject to the appended claims.

Claims

1. An automated testing device for the impermeability of water conservancy engineering materials, comprising a frame (1), a workbench (11) on the frame (1), a material loading assembly (2) for concrete to bear on the workbench (11), the material loading assembly (2) comprising a testing cylinder (21) fixedly installed on the workbench (11) and a material loading cylinder (22) detachably installed on the testing cylinder (21), and a water outlet (211) is provided at the bottom of the testing cylinder (21). characterized in that The bottom of the material carrier (22) is a net bag (221). A humidity detector (3) capable of detecting the impermeability of concrete is provided below the net bag (221) in the detection cylinder (21). The material carrier (22) can move vertically in the detection cylinder (21). An elastic support structure (212) is provided on the detection cylinder (21) to provide elastic support for the material carrier (22). A vibration drive component (213) is also provided on the detection cylinder (21) to drive the material carrier (22) to produce a vibration effect. When the material carrier (22) vibrates, the concrete sample in the material carrier (22) is in a state of gradual and uniform distribution, so that the voids in the concrete sample are reduced and air is eliminated. The groove of the loading cylinder (22) is provided with a compaction component (4) that can squeeze the concrete sample. The frame (1) is provided with a hydraulic cylinder (12) for driving the compaction component (4) to move vertically toward the loading cylinder (22). The hydraulic cylinder (12) has a pressure rod (121) connected to the compaction component (4). When the concrete sample is evenly distributed in the loading cylinder (22) and squeezed by the compaction component (4), the concrete sample is in a compacted state simulating the actual construction conditions. The compaction assembly (4) includes a compression shell (41) and a movable pressure plate (42) disposed therein. The compression shell (41) has a fixed pressure plate (43). The movable pressure plate (42) and the fixed pressure plate (43) together form a pressure surface. The compression shell (41) has a water injection cavity (411). When the movable pressure plate (42) moves away from the fixed pressure plate (43), a drainage gap communicating with the water injection cavity (411) is formed between the two. The elastic support structure (212) has a support frame plate (2121) provided inside the detection cylinder (21) for supporting the material cylinder (22). A vibration spring (2122) is fixedly connected between the support frame plate (2121) and the detection cylinder (21). The humidity detector (3) is provided on the support frame plate (2121). The bottom of the net bag (221) is provided with absorbent paper (31) that is attached to it and can be detected by the humidity detector (3). The support frame (2121) is provided with a step (32) for placing the absorbent paper (31). The support frame (2121) is provided with a tray (33) for supporting the paper.

2. The automatic detection device for hydraulic engineering material impermeability according to claim 1, characterized in that, The outer side of the extrusion shell (41) is provided with a rubber ring (413) that can make close contact with the inner wall of the material carrier (22). When the extrusion shell (41) is pressed into the material carrier (22), the rubber ring (413) is in a compressed state in contact with the material carrier (22), so that the gap between the extrusion shell (41) and the material carrier (22) is sealed during the compaction process.

3. The automated testing device for the impermeability of hydraulic engineering materials according to claim 1, characterized in that, The upper edge of the material carrier (22) has an outwardly extending ring edge (222), and the upper end of the detection cylinder (21) is provided with an elastic layer (2221) for supporting the ring edge (222). The detection cylinder (21) is provided with a vibration drive assembly (213) around its perimeter that cooperates with the ring edge (222) to drive the material carrier (22) to vibrate.

4. The automated testing device for the impermeability of hydraulic engineering materials according to claim 3, characterized in that, There is a gap between the material carrier (22) and the detection cylinder (21), and there are rolling balls (223) between the material carrier (22) and the detection cylinder (21).

5. The automated testing device for the impermeability of hydraulic engineering materials according to claim 3, characterized in that, The vibration drive assembly (213) has a push rod (2131) that can move toward the material cylinder (22). The detection cylinder (21) is provided with a guide sleeve (2132) for the push rod (2131) to move. The ring edge (222) of the material cylinder (22) has a ramp (2222) that cooperates with the push rod (2131). When the push rod (2131) pushes the ring edge (222) along the ramp (2222), the material cylinder (22) is in a pressed state, and the vibration spring (2122) is in a compressed state.

6. An automated testing method for the impermeability of hydraulic engineering materials, applied to the automated testing device for the impermeability of hydraulic engineering materials as described in any one of claims 1-5, characterized in that, Includes the following steps: S1. Place the concrete sample in the material carrier (22) and vibrate the material carrier (22) by the vibration drive component (213) to ensure that the concrete sample is evenly distributed and air is removed. S2. Using the hydraulic cylinder (12) to drive the compaction component (4) to press down, the concrete sample in the material cylinder (22) is squeezed to simulate the compaction state under actual construction conditions. S3. The concrete sample’s impermeability is evaluated by attaching absorbent paper (31) to the bottom of the net bag (221) and monitoring the humidity change of the sample with a humidity detector (3).

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