Accurate flow calibration device of concrete flow meter

Abstract

The utility model relates to the technical field of flow meters, in particular to an accurate flow calibration device of a concrete flow meter, which comprises a conveying pipe for conveying concrete, and a flow calibration detection component is arranged on the outer side of the conveying pipe; the flow calibration detection assembly comprises three sets of electromagnetic coils, three sets of structural cylinders and a controller, the ends of the electromagnetic coils are electrically connected with electrodes, the electrodes penetrate through the outer sides of the structural cylinders, electrode bases are fixedly installed at the ends of the electrodes, parallel cables are electrically connected to the electrode bases, and thyristors and millivoltmeters are connected to the parallel cables in series. And the three groups of parallel cables are connected in parallel to the controller. According to the utility model, the flow calibration detection assembly is arranged, electromotive force generated by three groups of electromagnetic coils is utilized to automatically perform a mean value effect in a circuit parallel connection principle, the detection precision is improved, and meanwhile, the controller randomly closes two parallel circuits through a background preset program so as to calibrate each electromagnetic coil; and the subsequent detection precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flowmeter technical field especially relates to a concrete flowmeter's flow accurate calibration device. BACKGROUND

[0002] In the field of building construction, concrete production, accurate measurement of concrete is very important to ensure the quality of the project, control cost, concrete flowmeter as the key equipment to measure the flow of concrete, its measurement accuracy directly affects the accuracy of concrete mix and the stability of the production process, however, due to the high viscosity of concrete, containing aggregate and other characteristics, in the long-term use, concrete flowmeter is easy to be affected by wear, blockage and other factors, resulting in flow measurement deviation.

[0003] The traditional concrete flowmeter calibration method adopts offline calibration, that is, the flowmeter is disassembled and sent to the laboratory for calibration, which is not only cumbersome, time-consuming and labor-intensive, but also may introduce new errors during disassembly and installation, affecting the accuracy of calibration, in addition, offline calibration cannot reflect the performance of the flowmeter in the actual working state in real time, when the flowmeter is installed back to the working site, due to the change of working condition, it may still appear inaccurate measurement, with the rapid development of the construction industry and the concrete production industry, higher requirements are put forward for the calibration accuracy, convenience and real-time performance of the concrete flowmeter.

[0004] To solve the above technical deficiencies, we propose a concrete flowmeter flow accurate calibration device. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and proposes a concrete flowmeter flow accurate calibration device.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A kind of concrete flowmeter flow accurate calibration device, including the conveying pipe for concrete conveying, the conveying pipe outside is provided with flow calibration detection component;The flow calibration detection component includes three groups of electromagnetic coils, three groups of structure tubes and controller, the electrode is electrically connected to the end of electromagnetic coil, the electrode passes to the outside of structure tube and the electrode end is fixedly installed with electrode seat, parallel cable is electrically connected on the electrode seat, thyristor and millivolt meter are connected in series on the parallel cable, three groups of parallel cable are connected in parallel into controller.

[0008] Further, the conveying pipe is made of stainless steel.

[0009] Further, symmetrical fixing connection has the connecting ring seat on both ends of the conveying pipe, a plurality of threaded reserved holes are equidistantly arranged on the connecting ring seat.

[0010] Further, the flow calibration detection assembly further comprises a protective shell, the electrode seat, the parallel cable, the thyristor, the millivoltmeter and the controller are fixedly installed on the inner side of the protective shell.

[0011] Further, an electronic display screen and a battery compartment are fixedly installed on the upper side of the protective shell, operation buttons are arranged on the side of the electronic display screen, and the controller is electrically connected with the electronic display screen.

[0012] Further, a storage battery is arranged on the inner side of the battery compartment, and a buckle cover is arranged on the port of the battery compartment.

[0013] Further, the structure cylinder is made of aluminum material, the electromagnetic coil is fixedly embedded on the inner wall of the structure cylinder, and the fixed ring is fixedly installed on the outer wall of the conveying pipe.

[0014] Compared with the related art, the flow accurate calibration device for the concrete flowmeter has the following beneficial effects:

[0015] In the flow accurate calibration device for the concrete flowmeter, the flow calibration detection assembly is arranged, the electromagnetic coil is arranged in the flow calibration detection assembly, when the concrete flows in the conveying pipe, the electrons and charged ions in the concrete flow, and the induced electromotive force is generated in the electromagnetic coil on the outside, the size of the induced electromotive force is proportional to the flow rate of the concrete, and the flow rate of the concrete can be obtained by calculating the detected electromotive force by the controller, the principle is similar to that of the electromagnetic flowmeter, three groups of electromagnetic coils are arranged in parallel in the utility model, the voltage is equal in the parallel circuit, the electromotive forces generated by the three groups of electromagnetic coils are automatically averaged in the parallel circuit principle, the detection accuracy is improved, the thyristors are arranged in the circuits of the three groups of electromagnetic coils, the controller can control the opening and closing of the parallel circuit, when the calibration work is carried out, the controller randomly closes two parallel circuits for calibration work through the background preset program, whether the detection accuracy of each electromagnetic coil deviates greatly can be judged through the calibration work, the compensation value is directly input into the parallel circuit with large detection deviation for calculation, the accuracy of subsequent detection is improved, and the practicability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the flow accurate calibration device for the concrete flowmeter.

[0017] Figure 2 Schematic diagram of the three-dimensional structure of the flow calibration detection assembly Figure One ;

[0018] Figure 3 Schematic diagram of the three-dimensional structure of the flow calibration detection assembly Figure Two ;

[0019] Figure 4 Schematic diagram of the three-dimensional structure of the flow calibration detection assembly.

[0020] In the figure: 1, conveying pipe; 2, flow calibration detection assembly; 21, protective shell; 22, electronic display screen; 23, operation button; 24, battery compartment; 25, buckle cover; 26, structural cylinder; 27, electromagnetic coil; 28, electrode; 29, electrode seat; 210, parallel cable; 211, thyristor; 212, millivoltmeter; 213, controller; 214, fixed ring; 3, connecting ring seat; 4, threaded reserved hole. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and embodiments.

[0022] Referring to Figures 1-4 A flow precision calibration device of a concrete flowmeter: comprising a conveying pipe 1 for conveying concrete, and a flow calibration detection assembly 2 arranged outside the conveying pipe 1; the flow calibration detection assembly 2 comprises three groups of electromagnetic coils 27, three groups of structural cylinders 26 and a controller 213, the end of each electromagnetic coil 27 is electrically connected to an electrode 28, the electrode 28 penetrates to the outside of the structural cylinder 26 and the end of the electrode 28 is fixedly installed with an electrode seat 29, the electrode seat 29 is electrically connected with a parallel cable 210, the parallel cable 210 is connected in series with a thyristor 211 and a millivoltmeter 212, and the three groups of parallel cables 210 are connected in parallel to the controller 213.

[0023] Through the above arrangement, the three groups of electromagnetic coils 27 are connected in parallel, according to the principle that the voltage in the parallel circuit is equal, and then the induced electromotive force generated by the three groups of electromagnetic coils 27 automatically performs the mean value action, avoiding the data error in the detection of a single electromagnetic coil 27, and through the mean value detection, the detection precision is improved.

[0024] In this way, the conveying pipe 1 is made of stainless steel.

[0025] Through the above arrangement, the stainless steel has high strength and corrosion resistance, and the stainless steel has magnetic permeability, so that the electromagnetic coil 27 can act on the charged ions and electrons flowing in the pipeline, thereby generating an induced electromotive force.

[0026] In the mode, the connecting ring seat 3 is symmetrically and fixedly connected at both ends of the conveying pipe 1, and a plurality of screwing reserved holes 4 are equidistantly and circumferentially formed on the connecting ring seat 3.

[0027] Through the above-mentioned mode, the connecting ring seat 3 is provided, so that the device is conveniently screwed into the conveying pipe of the concrete.

[0028] In the mode, the flow calibration detection assembly 2 further comprises a protective shell 21, which is fixedly installed on the outer wall of the conveying pipe 1, and the electrode seat 29, the parallel cable 210, the thyristor 211, the millivoltmeter 212 and the controller 213 are all fixedly installed on the inner side of the protective shell 21.

[0029] Through the above-mentioned mode, the protective shell 21 provides a protective effect on the internal elements.

[0030] In the mode, the electronic display screen 22 and the battery compartment 24 are fixedly installed on the upper side of the protective shell 21, the operation button 23 is arranged on the side of the electronic display screen 22, and the controller 213 is electrically connected with the electronic display screen 22.

[0031] Through the above-mentioned mode, the controller 213 calculates the concrete flow rate data and transmits the data to the electronic display screen for display, wherein the calculation of the flow rate is obtained by multiplying the detected concrete flow rate by the inside cross-sectional area of the conveying pipe 1, and the calculation is performed by the internal program of the controller 213.

[0032] In the mode, the battery compartment 24 is provided with a storage battery, and the battery compartment 24 is provided with a buckle cover 25 at the port.

[0033] Through the above-mentioned mode, the storage battery provides power supply for the electrical devices in the device.

[0034] In the mode, the structure cylinder 26 is made of aluminum, the electromagnetic coil 27 is fixedly embedded on the inner wall of the structure cylinder 26, the fixed ring 214 is symmetrically and fixedly installed at both ends of the structure cylinder 26, and the fixed ring 214 is fixedly sleeved on the outer wall of the conveying pipe 1.

[0035] Through the above-mentioned mode, the structure cylinder 26 is made of aluminum, and the aluminum material has a magnetic shielding property, which prevents the external magnetic field from interfering with the induced electromotive force generated on the electromagnetic coil 27, thereby affecting the detection accuracy of the device.

[0036] The working principle of the flow precision calibration device of the concrete flow meter provided by the utility model is as follows:

[0037] In use, when the concrete flows in the conveying pipe 1 made of stainless steel, the charged particles in the concrete flow with the concrete and will have electromagnetic induction with the electromagnetic coils 27 outside the conveying pipe 1, according to the principle of electromagnetic induction, an induced electromotive force is generated in the electromagnetic coils 27, and the size of the induced electromotive force is proportional to the flow rate of the concrete, since the three groups of electromagnetic coils 27 are in parallel, according to the characteristics of the parallel circuit voltage, the induced electromotive forces generated by the three groups of electromagnetic coils 27 are automatically calculated, thereby improving the accuracy of detecting the flow rate of the concrete, the millivoltmeter 212 measures the induced electromotive force value in each parallel circuit in real time, and transmits the data to the controller 213, the controller 213 receives the induced electromotive force data from the millivoltmeter 212, converts the induced electromotive force value into the flow rate data of the concrete according to the preset algorithm, at the same time, the controller 213 calculates the flow data of the concrete (flow = flow rate x inside cross-sectional area of the conveying pipe 1) according to the inside cross-sectional area of the conveying pipe 1 (the data is pre-stored in the internal program of the controller 213), the controller 213 transmits the calculated flow data of the concrete to the electronic display screen 22, which is displayed on the electronic display screen 22 for the operator to view. The operator can also interact with the controller 213 by operating the button 23, such as starting or stopping the calibration process, viewing historical data, etc., during the calibration work, the controller 213 randomly closes two parallel circuits according to the background preset program, and only keeps the circuit with the electromagnetic coil 27 for calibration detection. In this way, it can be judged whether the detection accuracy of each electromagnetic coil 27 deviates greatly, if the data detected by a certain electromagnetic coil 27 deviates greatly from the data detected by other normal electromagnetic coils 27, the controller 213 will input an equal compensation value to the parallel circuit with the electromagnetic coil 27 to improve the overall detection accuracy in subsequent detection, and ensure the accuracy of the flow detection of the concrete flowmeter.

[0038] The above is only an embodiment of the present application, and does not limit the patent range of the present application, any equivalent structure or equivalent process transformation according to the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A flow accuracy calibration device for a concrete flow meter, characterized by, The application relates to a conveying pipe (1) for concrete conveying, which is externally provided with a flow calibration detection assembly (2). The flow calibration detection assembly (2) comprises three groups of electromagnetic coils (27), three groups of structure cylinders (26) and a controller (213), the ends of the electromagnetic coils (27) are electrically connected with electrodes (28), the electrodes (28) pass through the outside of the structure cylinders (26), the ends of the electrodes (28) are fixedly installed with electrode bases (29), the electrode bases (29) are electrically connected with parallel cables (210), the parallel cables (210) are serially connected with thyristors (211) and millivoltmeters (212), and the three groups of parallel cables (210) are connected in parallel with the controller (213).

2. A device for accurately calibrating the flow of a concrete flow meter according to claim 1, characterized in that, The conveying pipe (1) is made of stainless steel.

3. A device for accurately calibrating the flow of a concrete flow meter as defined in claim 1, wherein, The conveying pipe (1) is symmetrically fixedly connected with connecting ring bases (3) at both ends, a plurality of screwing reserved holes (4) are circumferentially and equidistantly formed in the connecting ring bases (3).

4. A device for accurately calibrating the flow of a concrete flow meter as defined in claim 1, wherein, The flow calibration detection assembly (2) further comprises a protective shell (21), the protective shell (21) is fixedly installed on the outer wall of the conveying pipe (1), and the electrode bases (29), the parallel cables (210), the thyristors (211), the millivoltmeters (212) and the controller (213) are fixedly installed on the inner side of the protective shell (21).

5. A flow accuracy calibration device for a concrete flow meter as claimed in claim 4, wherein, An electronic display screen (22) and a battery compartment (24) are fixedly installed on the upper side of the protective shell (21), operation buttons (23) are arranged on the side of the electronic display screen (22), and the controller (213) is electrically connected with the electronic display screen (22).

6. A flow accuracy calibration device for a concrete flow meter as claimed in claim 5, wherein, A storage battery is arranged on the inner side of the battery compartment (24), and a buckle cover (25) is arranged on the port of the battery compartment (24).

7. A device for accurately calibrating the flow of a concrete flow meter as defined in claim 1, wherein, The structure cylinder (26) is made of aluminum, the electromagnetic coils (27) are fixedly embedded on the inner wall of the structure cylinder (26), fixed ring loops (214) are symmetrically fixedly installed at both ends of the structure cylinder (26), and the fixed ring loops (214) are fixedly sleeved on the outer wall of the conveying pipe (1).

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