A concrete precision metering device and method

Abstract

This invention relates to a precise concrete metering device and method, belonging to the field of ready-mixed concrete metering technology. It addresses the problems of inaccurate metering results and poor applicability in existing concrete metering methods. It includes a metering pipe, at least three sets of infrared detectors, an information receiving processor, and a data platform. The at least three sets of infrared detectors are evenly spaced and embedded in the inner wall of the metering pipe. The infrared detectors are connected to the information receiving processor, which is connected to the data platform. The metering method involves using multiple sets of infrared detectors evenly embedded in the inner wall of the metering pipe to measure the metering data of the flowing concrete. The metering data includes at least the gap c between the surface of the flowing concrete and the inner wall of the metering pipe. i and the diameter d of the open bubble i Instantaneous velocity v i The average volume of concrete is calculated by measuring the total time T and temperature, and then corrected by coefficients from the engineering database to obtain the accurate average volume of concrete.

Description

Technical Field

[0001] This invention relates to the field of ready-mixed concrete metering technology, and in particular to a precise concrete metering device and method. Background Technology

[0002] Currently, most construction projects use ready-mixed concrete, resulting in massive concrete usage. The losses and costs caused by measurement errors and inadequate supervision during transportation cannot be ignored. Existing indirect measurement methods, such as weighing at the concrete plant and construction site, often result in discrepancies between the measured concrete volume and the actual amount poured, leading to disputes over concrete volume calculations.

[0003] Existing concrete metering equipment suffers from problems such as high cost, lack of portability, difficult installation, large metering errors, and difficulty in adapting to complex on-site environments. Metering concrete using conventional fluid principle methods is not accurate enough, and there is no adaptive adjustment for metering methods for different types of concrete, resulting in metering results that do not meet requirements. This is also an important factor limiting the large-scale promotion and application of this metering method. Summary of the Invention

[0004] To address the problems of inaccurate measurement results and poor applicability of existing concrete metering methods, the present invention aims to provide a precise concrete metering device and method. Based on the principle of infrared measurement, and considering the influence of air bubbles in concrete and correction coefficients for different concrete properties, this method is adaptable to the precise metering of concrete in complex construction site environments.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a concrete precision metering device, which includes a metering pipe, at least three sets of infrared detectors, an information receiving processor and a data platform. The at least three sets of infrared detectors are equally spaced and embedded in the inner wall of the metering pipe. The at least three sets of infrared detectors are connected to an external information receiving processor, and the information receiving processor is connected to the data platform.

[0006] The concrete precision metering device of the present invention comprises at least three sets of infrared detectors equally spaced and embedded in the inner wall of a metering pipe, forming two continuous monitoring sections within the pipe cavity. This allows for real-time and rapid acquisition of various data related to the concrete flowing through different monitoring sections of the pipe cavity. The infrared detectors are connected to an external information receiving processor and a data platform. The data platform analyzes and calculates the volume of concrete passing through the metering pipe based on the monitoring data. The concrete precision metering device has the following beneficial effects:

[0007] 1. Multiple infrared detectors are embedded at equal intervals in the inner wall of the metering pipe. They use the principle of infrared ranging to measure the instantaneous velocity and cross-sectional length of the concrete, and take into account the influence of air bubbles. The average volume of concrete is measured separately, making the measurement results more accurate. The infrared detectors measure quickly, the data is accurate, and the error is smaller.

[0008] 2. The infrared detector is embedded in the inner wall of the metering pipe, does not directly contact the concrete, and does not affect the material flowability of the concrete. The infrared detector is simple, durable, has low maintenance costs, and is easy to transport and install.

[0009] 3. This metering device has a fast measurement speed, high measurement accuracy, and low cost. It is easy to carry and install on the construction site. It is suitable for measurement during the concrete pouring stage or direct measurement at the factory. It not only solves the problem of difficult measurement of concrete on the construction site, but also helps to promote the standardized management of the concrete market.

[0010] 4. Record measurement data through the data platform, and perform statistical analysis and screening of the measurement data to improve the efficiency of material aggregation and settlement for user units.

[0011] Furthermore, the metering pipe is made of metal or PVC material.

[0012] Furthermore, both ends of the metering pipe are provided with annular protrusions, and the two connecting ends of the metering pipe are connected to the pump pipe on the pump truck and secured with pipe clamps.

[0013] Furthermore, it also includes humidity and pressure measuring elements embedded in the inner wall of the metering pipe, which are connected to the information receiving processor.

[0014] Furthermore, the surfaces of the infrared detection generator, humidity and pressure measuring elements that come into contact with the concrete are made of wear-resistant materials.

[0015] Furthermore, it also includes a power supply, which is connected to the infrared detection generator, humidity and pressure measuring elements, information receiving processor and data platform respectively. The power supply is a portable storage power supply or an external power supply.

[0016] In addition, the present invention also provides a method for accurate measurement of concrete, the steps of which are as follows:

[0017] S1: Install the concrete precision metering device, connect both ends of the concrete precision metering device to the pump pipe respectively, connect at least three sets of infrared detection generators to the external information receiving processor, and connect the information receiving processor to the data platform.

[0018] S2: At least three sets of infrared detectors measure the gap between the surface of the flowing concrete and the inner wall of the metering pipe.i and bubble diameter d i Measure the instantaneous velocity v passing through at least three sets of infrared detectors. i The system measures the time (T) and temperature, and transmits the measured data synchronously to the information receiving processor. It calculates the volume of concrete passing through the data and transmits the data to the data platform. The data platform calculates the average volume of concrete V passing through at least three measurement points and corrects the average volume of concrete V with a coefficient α.

[0019] Furthermore, in step S2, the data platform calculates the average volume of concrete measured at at least three points. The steps are as follows:

[0020] The average flow rate Q of the concrete, taking into account the effect of air bubbles, is calculated as follows:

[0021]

[0022] The concrete cross-sectional area A measured by the metering device i ,as follows:

[0023]

[0024] D is the diameter of the metering pipe;

[0025] d i The diameter of the open air bubbles contained in the concrete at the measurement point;

[0026] c i This refers to the length of the gap between the concrete surface and the inner wall of the metering pipe at the measurement point.

[0027] v i The instantaneous velocity of the concrete as it flows through the infrared detector generator;

[0028] Calculate the average volume of concrete measured at at least three points. as follows:

[0029]

[0030] Where T is the total time it takes for concrete to flow through the metering device from the start of metering to the end.

[0031] Furthermore, in step S2, the data platform uses an engineering experience database to calculate the average volume of concrete. The coefficient α is corrected as follows:

[0032]

[0033] α is a correction factor that takes into account the actual performance of concrete materials. Depending on the material, α is taken as 0.95 to 1.05.

[0034] The data platform's metering software system corrects the concrete metering data to obtain accurate metering results. Based on the recorded metering data and its fluctuations, the data platform displays and further analyzes the data through the metering software system to manage concrete metering.

[0035] Furthermore, step S2 also includes using a humidity and pressure measuring element embedded in the inner wall of the metering pipe to measure the humidity and pipe pressure of the concrete flowing through the measuring point in real time. Based on the fluctuation of the metering data, the pumping status of the pump pipe is indirectly monitored, and safety warnings and pump truck start-up and shutdown are carried out. Alternatively, by measuring material information such as humidity and pressure, the material status is analyzed, and quality inspection and management of the concrete entering the construction site are carried out. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a structure of an embodiment of the concrete precision metering device of the present invention;

[0037] Figure 2 for Figure 1 AA cross-section view;

[0038] Figure 3 for Figure 1 BB cross-section;

[0039] Figure 4 This is a flowchart of the concrete precise measurement method of the present invention.

[0040] The numbers in the diagram are as follows:

[0041] Metering pipe 11; connection end 11a; infrared detection generator 12; humidity and pressure measuring element 14; information receiving processor 15; data platform 16. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the purpose of illustrating the embodiments of the present invention.

[0043] Figure 1 The middle arrow indicates the direction of concrete flow. (See below for details.) Figures 1 to 3The present invention describes a precise concrete metering device comprising: a metering pipe 11, at least three sets of infrared detectors 12, an information receiving processor 15, and a data platform 16. The at least three sets of infrared detectors 12 are evenly spaced and embedded in the inner wall of the metering pipe 11. The infrared detectors 12 are used to measure the instantaneous velocity, cross-sectional length, open bubble diameter, and temperature of concrete passing through a measuring point. The at least three sets of infrared detectors 12 are signal-connected to an external information receiving processor 15, which is connected to the data platform 16. The information receiving processor 15 receives real-time monitoring data from the at least three sets of infrared detectors 12, calculates the volume of concrete passing through the metering pipe 11, and uploads this information to the data platform 16. The data platform 16 uses a matching metering software system to statistically analyze, filter, and apply the metering data uploaded by the information receiving processor 15, providing accurate metering results and facilitating concrete material management.

[0044] The concrete precision metering device of the present invention comprises at least three sets of infrared detectors 12 equidistantly embedded in the inner wall of the metering pipe 11, forming two continuous monitoring sections within the inner cavity of the metering pipe 11. This allows for real-time and rapid acquisition of various data related to the concrete flowing through different monitoring sections within the pipe cavity. The infrared detectors 12 are signal-connected to an external information receiving processor 15 and a data platform 16. The data platform 16 analyzes and calculates the volume of concrete passing through the metering pipe 11 based on the monitoring data. The concrete precision metering device has the following beneficial effects:

[0045] 1. Multiple sets of infrared detectors 12 are embedded at equal intervals in the inner wall of the metering pipe 11. They use the infrared ranging principle to measure the instantaneous velocity of concrete and the cross-sectional length of concrete. Taking into account the influence of air bubbles, the average volume of concrete is measured separately, making the measurement results more accurate. The infrared detectors 12 measure quickly, the data is accurate, and the error is smaller.

[0046] 2. The infrared detection generator 12 is embedded in the inner wall of the metering pipe 11, does not directly contact the concrete, and does not affect the material fluidity of the concrete. The infrared detection generator 12 is simple, durable, has low maintenance costs, and is easy to transport and install.

[0047] 3. This metering device has a fast measurement speed, high measurement accuracy, and low cost. It is easy to carry and install on the construction site. It is suitable for measurement during the concrete pouring stage or direct measurement at the factory. It not only solves the problem of difficult measurement of concrete on the construction site, but also helps to promote the standardized management of the concrete market.

[0048] 4. Record measurement data through the data platform 16, and perform statistical analysis and screening of the measurement data to improve the efficiency of material aggregation and settlement for user units.

[0049] In this embodiment, the metering pipe 11 is made of metal or PVC material. The metering pipe 11 is about 2 meters long and the diameter of the metering pipe 11 can be adjusted according to the measurement needs.

[0050] Both ends of the metering pipe 11 are provided with annular protrusions 11a. When the metering device is used for concrete metering during the construction stage, the two connection ends 11a of the metering pipe 11 are connected to the pump pipe on the pump truck and secured with conventional pipe clamps. For more accurate measurement, the metering pipe 11 is generally installed on the straight section of the pump pipe. When the metering device is used for concrete metering during the production stage, the concrete can be evenly poured into the metering pipe 11 with the help of devices such as funnels, so that the concrete passes through the metering pipe 11 evenly and continuously.

[0051] like Figure 1 and Figure 2 As shown, the concrete precision metering device of the present invention also includes a humidity and pressure measuring element 14 embedded in the inner wall of the metering pipe 11, used to measure the humidity and pipe pressure of the concrete flowing through the measuring point in real time, and transmit the monitoring data to the information receiving processor. Construction personnel can analyze the pump pipe burst or blockage status based on changes in pipe pressure, analyze the final volume, provide safety warnings and control the start and stop of the pump truck, and analyze material conditions by measuring material information such as humidity and pressure, which is beneficial for the quality inspection and management of concrete entering the construction site.

[0052] Furthermore, the surfaces of the infrared detector 12 and the humidity and pressure measuring elements 14 that come into contact with the concrete are made of materials that do not affect their functionality and are wear-resistant, such as tempered glass. These materials do not block infrared radiation, and because the surface of the tempered glass is smooth, they do not affect the flow of concrete in the metering pipe 11.

[0053] Please continue to refer to this. Figure 1 The concrete precision metering device of the present invention also includes a power supply, which is connected to three sets of infrared detection generators 12, humidity and pressure measuring elements 14, information receiving processors 15 and data platforms 16 respectively, and provides them with power to ensure their normal operation. The power supply is a portable storage power supply or an external power supply.

[0054] The metering software system described in this embodiment can be installed on a mobile phone and / or used in conjunction with a PC. It can correct metering data based on various engineering databases to achieve accurate metering, and can also perform metering data analysis and application, which is helpful for concrete construction management.

[0055] Combination Figures 1 to 4 The concrete precise measurement method of the present invention is described in detail below:

[0056] S1: Install the concrete precision metering device, connect both ends of the concrete precision metering device to the pump pipe respectively, turn on the power of the concrete precision metering device, connect at least three sets of infrared detection generators 12 to the external information receiving processor 15, and connect the information receiving processor 15 to the data platform 16.

[0057] S2: At least three sets of infrared detectors 12 respectively measure the gap c between the surface of the flowing concrete and the inner wall of the metering pipe 11. i and bubble diameter d i The instantaneous velocity v passing through at least three sets of infrared detectors 12 is measured. i The system measures the time (T) and temperature, and synchronously transmits the measured data to the information receiving processor 15. It then calculates the volume of concrete passing through the data platform 16, which calculates the average volume of concrete passing through at least three measurement points. And the average volume of concrete Correct the coefficient α.

[0058] The concrete precision metering method of the present invention utilizes multiple sets of infrared detectors 12, which are equally spaced and embedded in the inner wall of the metering pipe 11, to measure the metering data of the flowing concrete. The metering data includes at least the gap c between the surface of the flowing concrete and the inner wall of the metering pipe 11. i and the diameter d of the open bubble i Instantaneous velocity of concrete v i The method measures the average volume of concrete by taking the total time (T) and temperature, and then corrects the values ​​using coefficients from an engineering database to obtain the accurate average volume of concrete. This measurement method utilizes the principle of infrared ranging to obtain measurement data of flowing concrete, offering fast measurement speed and high accuracy. By considering the influence of concrete air bubbles and correction coefficients for different concrete properties, it can adapt to the accurate measurement of concrete in complex construction site environments, as well as direct measurement during the concrete pouring stage or at the factory. This not only solves the problem of difficult concrete measurement at construction sites but also helps to improve the current widespread problem of concrete loss during transportation, and promotes the standardized management of the concrete market.

[0059] In step S2, the data platform 16 calculates the average volume of concrete measured at at least three measurement points. The steps are as follows:

[0060] Calculate the average concrete flow rate Q (m³) considering the effect of air bubbles. 3 / s), as follows:

[0061]

[0062] The concrete cross-sectional area A measured by the metering device i (m 2),as follows:

[0063]

[0064] D is the diameter (m) of metering pipe 11;

[0065] d i The diameter (m) of the open air bubbles contained in the concrete at the measurement point;

[0066] c i The distance between the concrete surface at the measurement point and the inner wall of the metering pipe 11 is (m).

[0067] v i The instantaneous velocity (m / s) of the concrete flowing through the infrared detector 12;

[0068] Calculate the average volume of concrete measured at at least three points. as follows:

[0069]

[0070] Where T is the total time it takes for concrete to flow through the metering device from the start of metering to the end.

[0071] In step S2, the data platform 16 uses an engineering experience database to calculate the average volume of concrete. The coefficient α is corrected as follows:

[0072]

[0073] α is a correction factor that takes into account the actual performance of concrete materials. It is obtained by the data platform 16 through the engineering experience database. Depending on the material, α is taken as 0.95 to 1.05.

[0074] The metering software system of the data platform 16 corrects the concrete metering data to obtain accurate metering results. Based on the recorded metering data and its fluctuations, the data platform 16 displays and further analyzes the data through the metering software system, implementing intelligent management of concrete metering. For example, it analyzes the material condition based on the measured concrete humidity and temperature, providing a reference for concrete arrival acceptance; and it analyzes, simulates, and evaluates pump pipe layout schemes based on fluctuations in the metering data.

[0075] Step S2 further includes using a humidity and pressure measuring element 14 embedded in the inner wall of the metering pipe 11 to measure the humidity and pipe pressure of the concrete flowing through the measuring point in real time. Based on the fluctuation of the metering data, the pumping status of the pump pipe is indirectly monitored, such as the status of the pump pipe bursting or blocking. The volume of the pump head is analyzed, and safety warnings and control of the pump truck start and stop are given. Alternatively, by measuring material information such as humidity and pressure, the material status is analyzed, which is beneficial to the quality inspection and management of concrete entering the construction site.

[0076] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the claims.

Claims

1. A precise concrete metering device, characterized in that, include: The system includes a metering pipeline, at least three sets of infrared detectors, an information receiver processor, and a data platform. The at least three sets of infrared detectors are axially spaced and embedded in the inner wall of the metering pipeline for real-time measurement of the gap between the surface of the flowing concrete and the inner wall of the metering pipeline. c i and bubble diameter d i and the instantaneous velocity after passing through at least three sets of infrared detection generators v i ,time T In addition to temperature, at least three sets of infrared detectors are connected to an external information receiving processor, which is connected to a data platform.

2. The concrete precision metering device according to claim 1, characterized in that: The metering pipe is made of metal or PVC material.

3. The concrete precision metering device according to claim 1, characterized in that: Both ends of the metering pipe are provided with annular protrusions. The two connecting ends of the metering pipe are connected to the pump pipe on the pump truck and are fastened by pipe clamps.

4. The concrete precision metering device according to claim 1, characterized in that: It also includes humidity and pressure measuring elements embedded in the inner wall of the metering pipe, which are connected to the information receiving processor.

5. The concrete precision metering device according to claim 4, characterized in that: The surfaces of the infrared detector, humidity and pressure measuring elements that come into contact with the concrete are made of wear-resistant materials.

6. The concrete precision metering device according to claim 4, characterized in that: It also includes a power supply, which is connected to the infrared detector generator, humidity and pressure measuring elements, information receiving processor and data platform respectively. The power supply is a portable storage power supply or an external power supply.

7. A method for accurate measurement of concrete, characterized in that, The steps are as follows: S1: Install the concrete precision metering device as described in any one of claims 1 to 6, connect both ends of the concrete precision metering device to the pump pipe respectively, connect at least three sets of infrared detection generators to the external information receiving processor, and connect the information receiving processor to the data platform. S2: At least three sets of infrared detectors measure the gap between the surface of the flowing concrete and the inner wall of the metering pipe. c i and bubble diameter d i Measure the instantaneous velocity passing through at least three sets of infrared detectors. v i ,time T The system measures temperature and transmits the measured data synchronously to an information receiving processor. It then calculates the volume of concrete passing through the data points and transmits this data to a data platform. The data platform calculates the average volume of concrete passing through at least three measurement points. and the average volume of concrete Perform coefficient α Correction.

8. The method for accurate concrete measurement according to claim 7, characterized in that: In step S2, the data platform calculates the average volume of concrete measured at three points. The steps are as follows: Calculate the average flow rate of concrete considering the effect of air bubbles. Q ,as follows: Concrete cross-sectional area measured by the metering device A i ,as follows: D To measure the diameter of the pipe; d i The diameter of the open air bubbles contained in the concrete at the measurement point; c i This refers to the length of the gap between the concrete surface and the inner wall of the metering pipe at the measurement point. v i The instantaneous velocity of the concrete as it flows through the infrared detector generator; Calculate the average volume of concrete measured at at least three points. ,as follows: in, T The time it takes for the flowing concrete to pass through at least three sets of infrared detectors.

9. The method for accurate measurement of concrete according to claim 8, characterized in that: In step S2, the data platform uses an engineering experience database to calculate the average volume of concrete. Perform coefficient α Correction, i.e. α ; α To account for the actual performance of concrete materials, correction factors are applied according to different materials. α Use a value of 0.95~1.05; The data platform's metering software system corrects the concrete metering data to obtain accurate metering results. Based on the recorded metering data and its fluctuations, the data platform displays and further analyzes the data through the metering software system to manage concrete metering.

10. The method for accurate measurement of concrete according to claim 7, characterized in that: Step S2 further includes using a humidity and pressure measuring element embedded in the inner wall of the metering pipe to measure the humidity and pipe pressure of the concrete flowing through the measuring point in real time. Based on the fluctuation of the metering data, the pumping status of the pump pipe is indirectly monitored, and safety warnings and pump truck start-up and shutdown are carried out. Alternatively, by measuring humidity and pressure information, the concrete status is analyzed, and quality inspection and management of the concrete entering the construction site are implemented.

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