阅读说明：本技术 一种高温超导直流感应加热器的气隙磁场强度测量方法及装置 (Air gap magnetic field intensity measuring method and device of high-temperature superconducting direct current induction heater ) 是由 蒋国忠 杨平 黄建民 周呈劼 饶志文 倪国华 谭云海 吴启峰 李芳昕 于 2019-08-08 设计创作，主要内容包括：本发明公开了一种高温超导直流感应加热器的气隙磁场强度测量方法及装置,在测量装置的测量底板上设置有孔位,该方法包括：根据所述气隙磁场的分布情况确定所述测量底板上的第一范围；根据预设测量精度在所述第一范围内确定预设数量的测量孔位,其中,所述测量孔位之间具体为阵列式布置；在各所述测量孔位上分别安装传感器；移动所述测量底板至测量位,基于所述测量位进行测量,从而提高了对高温超导直流感应加热器的气隙磁场强度测量的效率和准确度。(The invention discloses a method and a device for measuring the air gap magnetic field intensity of a high-temperature superconducting direct current induction heater, wherein a hole site is arranged on a measuring bottom plate of a measuring device, and the method comprises the following steps: determining a first range on the measuring bottom plate according to the distribution condition of the air gap magnetic field; determining a preset number of measurement hole sites within the first range according to preset measurement accuracy, wherein the measurement hole sites are specifically arranged in an array manner; a sensor is respectively arranged on each measuring hole position; and moving the measuring bottom plate to a measuring position, and measuring based on the measuring position, thereby improving the efficiency and accuracy of measuring the air gap magnetic field intensity of the high-temperature superconducting direct current induction heater.)

1. A method for measuring air gap magnetic field intensity of a high-temperature superconducting direct current induction heater is characterized in that hole sites are arranged on a measuring bottom plate of a measuring device, and the method comprises the following steps:

determining a first range on the measuring bottom plate according to the distribution condition of the air gap magnetic field;

determining a preset number of measurement hole sites within the first range according to preset measurement accuracy, wherein the measurement hole sites are specifically arranged in an array manner;

a sensor is respectively arranged on each measuring hole position;

and moving the measuring bottom plate to a measuring position, and measuring based on the measuring position.

2. The method of claim 1, wherein the sensor is specifically a hall sensor, and wherein a sensor is mounted on each of the measurement holes, specifically:

fixing the sensors on the measurement hole sites respectively;

and connecting the output end of each sensor with an input interface of a virtual instrument software development platform LabVIEW.

3. The method of claim 2, wherein the measurement is performed based on the measurement bits, in particular:

enabling each sensor to receive constant current source power supply;

and inputting a measurement signal into the LabVIEW by each sensor, so that the LabVIEW processes the measurement signal to determine a measurement result.

4. The method of claim 1, wherein the measurement backplane further comprises a second range, and the hole sites in the second range are reserved hole sites.

5. The utility model provides a high temperature superconductor direct current induction heater's air gap magnetic field intensity measuring device which characterized in that be provided with the hole site on measuring device's the measurement bottom plate, includes:

the first determining module is used for determining a first range on the measuring bottom plate according to the distribution condition of the air gap magnetic field;

the second determining module is used for determining a preset number of measuring hole sites within the first range according to preset measuring accuracy, wherein the measuring hole sites are specifically arranged in an array manner;

the mounting module is used for mounting a sensor on each measuring hole position respectively;

and the measuring module is used for moving the measuring bottom plate to a measuring position and measuring based on the measuring position.

6. The measurement device according to claim 5, wherein the sensor is in particular a Hall sensor, and the mounting module is in particular configured to:

fixing the sensors on the measurement hole sites respectively;

and connecting the output end of each sensor with an input interface of a virtual instrument software development platform LabVIEW.

7. The measurement device of claim 6, wherein the measurement module is specifically configured to:

enabling each sensor to receive constant current source power supply;

and inputting a measurement signal into the LabVIEW by each sensor, so that the LabVIEW processes the measurement signal to determine a measurement result.

8. The measuring device of claim 5, wherein the measuring bottom plate further comprises a second range, and the hole sites in the second range are reserved hole sites.

Technical Field

The invention relates to the technical field of magnetic field measurement, in particular to a method and a device for measuring the air gap magnetic field intensity of a high-temperature superconducting direct current induction heater.

Background

Conventional electromagnetic induction heating techniques are widely used in the steel processing industry, but their efficiency is greatly reduced when non-ferromagnetic materials such as aluminum or copper are heated. The high-temperature superconducting direct current induction heating is an organic combination of a superconducting power application technology and an induction heating technology, makes full use of the low-loss characteristic of superconductivity in a direct current environment, and can realize preheating before the extrusion link in the non-ferromagnetic material processing industry by combining an electromagnetic induction technology.

The working principle of the high-temperature superconducting direct-current induction heating is as follows: the direct current is made to pass through the magnet comprising superconductive coil to produce strong direct current magnetic field and the motor drives the bar to rotate in the direct current magnetic field, so as to form eddy current inside the bar and produce joule heat to heat the bar.

An effective magnet link is formed by a coil wound with a high temperature superconducting coil and by an iron core. The magnetic field intensity of the air gap magnetic field needs to be determined after the magnet is excited, magnetic field measurement is generally carried out through a single sensor in the prior art, the magnetic field intensity of different point positions needs to be obtained one by one when measurement is carried out, the measurement process is complex and low in efficiency, and the increase of measurement errors can be caused due to continuous movement, so that the problem that how to conveniently, accurately and efficiently measure the air gap magnetic field intensity of the high-temperature superconducting direct current induction heater is urgently solved in the field is solved.

Disclosure of Invention

The invention provides a method for measuring the air gap magnetic field intensity of a high-temperature superconducting direct current induction heater, which is used for solving the problems of complex measuring process, low efficiency and large measuring error when the air gap magnetic field intensity of the high-temperature superconducting direct current induction heater is measured in the prior art, wherein a hole site is arranged on a measuring bottom plate of a measuring device, and the method comprises the following steps:

determining a first range on the measuring bottom plate according to the distribution condition of the air gap magnetic field;

determining a preset number of measurement hole sites within the first range according to preset measurement accuracy, wherein the measurement hole sites are specifically arranged in an array manner;

a sensor is respectively arranged on each measuring hole position;

and moving the measuring bottom plate to a measuring position, and measuring based on the measuring position.

Preferably, the sensor is specifically a hall sensor, and a sensor is respectively mounted on each of the measurement holes, specifically:

fixing the sensors on the measurement hole sites respectively;

and connecting the output end of each sensor with an input interface of a virtual instrument software development platform LabVIEW.

Preferably, the measurement is performed based on the measurement bits, specifically:

enabling each sensor to receive constant current source power supply;

and inputting a measurement signal into the LabVIEW by each sensor, so that the LabVIEW processes the measurement signal to determine a measurement result.

Preferably, the measuring bottom plate further comprises a second range, and hole sites in the second range are used as reserved hole sites.

Correspondingly, this application has still provided a high temperature superconduction direct current induction heater's air gap magnetic field intensity measuring device, is provided with the hole site on measuring device's the measurement bottom plate, includes:

the first determining module is used for determining a first range on the measuring bottom plate according to the distribution condition of the air gap magnetic field;

the second determining module is used for determining a preset number of measuring hole sites within the first range according to preset measuring accuracy, wherein the measuring hole sites are specifically arranged in an array manner;

the mounting module is used for mounting a sensor on each measuring hole position respectively;

and the measuring module is used for moving the measuring bottom plate to a measuring position and measuring based on the measuring position.

Preferably, the sensor is specifically a hall sensor, and the mounting module is specifically configured to:

fixing the sensors on the measurement hole sites respectively;

and connecting the output end of each sensor with an input interface of a virtual instrument software development platform LabVIEW.

Preferably, the measurement module is specifically configured to:

enabling each sensor to receive constant current source power supply;

and inputting a measurement signal into the LabVIEW by each sensor, so that the LabVIEW processes the measurement signal to determine a measurement result.

Preferably, the measuring bottom plate further comprises a second range, and hole sites in the second range are used as reserved hole sites.

Therefore, by applying the technical scheme, hole sites are arranged on a measuring bottom plate of the measuring device, and a first range on the measuring bottom plate is determined according to the distribution condition of the air gap magnetic field; determining a preset number of measurement hole sites within the first range according to preset measurement accuracy, wherein the measurement hole sites are specifically arranged in an array manner; a sensor is respectively arranged on each measuring hole position; the measurement bottom plate is moved to a measurement position, measurement is carried out based on the measurement position, accordingly, the efficiency and the accuracy of measurement of the air gap magnetic field intensity of the high-temperature superconducting direct current induction heater are improved, the measurement result is visually presented through upper computer monitoring of LabVIEW, and user experience is improved.

Drawings

Fig. 1 is a schematic flowchart of a method for measuring an air-gap magnetic field strength of a high-temperature superconducting dc induction heater according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an array magnetic field measurement device for measuring an air gap magnetic field of a high temperature superconductive DC induction heater according to an embodiment of the present application;

FIG. 3 is a schematic front view of an array magnetic field measurement device according to an embodiment of the present disclosure;

FIG. 4 is a power circuit diagram of an array magnetic field measurement device according to an embodiment of the present invention;

FIG. 5 is an array type magnetic field measurement monitoring interface of LabVIEW in the embodiment of the present application;

fig. 6 is a schematic structural diagram of an air-gap magnetic field strength measuring apparatus of a high-temperature superconducting dc induction heater according to an embodiment of the present application.

Detailed Description

As described in the background art, in the prior art, the air gap magnetic field strength of the high-temperature superconducting dc induction heater is generally measured by a single sensor, the measurement process is complex and inefficient, and the measurement error is large.

In order to solve the above problems, an embodiment of the present application provides a method for measuring an air-gap magnetic field strength of a high-temperature superconducting dc induction heater, in which an array magnetic field measuring device is directly used for measuring at a measurement position, and measurement data is transmitted into a LabVIEW, so that efficiency and accuracy of measurement of the air-gap magnetic field strength of the high-temperature superconducting dc induction heater are improved, a measurement result is visually presented through monitoring by an upper computer of the LabVIEW, and user experience is improved.

As shown in fig. 1, the present application provides a method for measuring air gap magnetic field strength of a high temperature superconducting dc induction heater, where a hole site is disposed on a measurement bottom plate of a measurement device, the method includes the following steps:

s101, determining a first range on the measuring bottom plate according to the distribution situation of the air gap magnetic field.

Specifically, a corresponding measurement range needs to be determined on the measurement bottom plate according to the distribution conditions of different air gap magnetic fields, and the measurement range is taken as a first range.

It should be noted that the size of the first range determined by the distribution of the air gap magnetic field by those skilled in the art is not determined, and the first range can be expanded or reduced as appropriate according to actual conditions, which does not affect the protection scope of the present application.

S102, determining a preset number of measurement hole sites in the first range according to preset measurement accuracy, wherein the measurement hole sites are specifically arranged in an array mode.

Specifically, after the first range is determined, the first range can correspond to different numbers of measurement hole sites based on different measurement accuracies, a preset number of measurement hole sites can be determined within the range according to the measurement accuracies, and the measurement hole sites are arranged in an array manner.

The skilled person can select a larger number of measurement hole sites when higher measurement accuracy is required and a smaller number of measurement hole sites when lower measurement accuracy is required, which does not affect the scope of protection of the present application.

In order to measure the air gap magnetic fields with different distribution conditions, in a preferred embodiment of the present application, the measurement base plate further includes a second range, and the hole sites in the second range are used as reserved hole sites.

Specifically, a reserved hole site is further arranged in the second range on the measuring bottom plate, when the distribution condition of the air gap magnetic field changes, the change of the measuring range is caused, and the reserved hole site and the measuring hole site can be mutually converted.

The number of reserved holes in the second range can be flexibly set by a person skilled in the art according to actual conditions.

And S103, respectively installing a sensor on each measuring hole position.

Specifically, after a preset number of measurement hole sites are determined, a sensor is installed on each measurement hole site, so that the sensor can be used for measuring the magnetic field strength in the following process.

In order to ensure that the air gap magnetic field strength is accurately measured and the measurement data is effectively processed, in a preferred embodiment of the present application, the sensor is specifically a hall sensor, and a sensor is respectively mounted on each measurement hole site, specifically:

fixing the sensors on the measurement hole sites respectively;

and connecting the output end of each sensor with an input interface of a virtual instrument software development platform LabVIEW.

Specifically, the Laboratory Virtual instrument Engineering Workbench (Virtual instrument software development platform) is a graphical programming development environment developed and developed by the national instrument company, and can develop flexible, scalable testing, measuring and automation application programs with the least cost and the fastest speed. LabVIEW is widely accepted by the industry, academia, and research laboratories as a standard data collection and instrument control software because it can collect real signals, analyze data to obtain useful information, and share experimental results and applications.

In a specific application scene of the application, the magnetic field Hall sensor can adopt HZ-312C, each sensor is respectively fixed on each measurement hole site, and the output end of each sensor is connected with the input interface of a LabVIEW of a virtual instrument software development platform, so that measurement data obtained by each sensor is transmitted into the LabVIEW for processing.

It should be noted that the above solution of the preferred embodiment is only a specific implementation solution proposed in the present application, and those skilled in the art may select other types of magnetic field measurement sensors and fix the sensors in different manners, and other manners of respectively installing sensors at each of the measurement holes are within the scope of the present application.

And S104, moving the measuring bottom plate to a measuring position, and measuring based on the measuring position.

Specifically, in the embodiment of the present application, the measurement base plate is placed at a specified position to perform measurement, and the measurement base plate is moved to a specified position in the air gap magnetic field to perform measurement of the magnetic field intensity, where the specified position is a measurement position.

The skilled person can move the measuring baseplate by different moving methods, and the different moving methods all belong to the scope of protection of the present application.

In order to ensure that an accurate measurement result is obtained, in a preferred embodiment of the present application, the measurement is performed based on the measurement bits, specifically:

enabling each sensor to receive constant current source power supply;

and inputting a measurement signal into the LabVIEW by each sensor, so that the LabVIEW processes the measurement signal to determine a measurement result.

Specifically, in a specific application scenario of the present application, each hall sensor is powered by a 5mA constant current source, and as shown in fig. 4, a power circuit diagram of the array magnetic field measurement device in the embodiment of the present application is shown. And each sensor outputs the acquired measurement data to the LabVIEW, so that the LabVIEW processes the measurement data to obtain a test result.

It should be noted that the above solution of the preferred embodiment is only one specific implementation solution proposed in the present application, and those skilled in the art may select different constant current sources to supply power to the sensor, and other ways of performing measurement based on the measurement bit all belong to the protection scope of the present application.

By applying the technical scheme, hole sites are arranged on a measuring bottom plate of the measuring device, and a first range on the measuring bottom plate is determined according to the distribution condition of the air gap magnetic field; determining a preset number of measurement hole sites within the first range according to preset measurement accuracy, wherein the measurement hole sites are specifically arranged in an array manner; a sensor is respectively arranged on each measuring hole position; the measurement bottom plate is moved to a measurement position, measurement is carried out based on the measurement position, accordingly, the efficiency and the accuracy of measurement of the air gap magnetic field intensity of the high-temperature superconducting direct current induction heater are improved, the measurement result is visually presented through upper computer monitoring of LabVIEW, and user experience is improved.

In order to further illustrate the technical idea of the present invention, the technical solution of the present invention will now be described with reference to specific application scenarios.

The embodiment of the application provides a method for measuring air gap magnetic field intensity of a high-temperature superconducting direct current induction heater, Hall sensors are installed on measurement hole sites arranged in an array mode according to distribution conditions of air gap magnetic fields, a measurement device is moved to a measurement position to obtain a measurement signal, the measurement signal is input into LabVIEW to determine a measurement result, and compared with a mode of measuring by adopting a single sensor, the method for measuring the air gap magnetic field intensity of the high-temperature superconducting direct current induction heater improves efficiency and accuracy of measurement of the air gap magnetic field intensity of the high-temperature superconducting direct current induction heater, and can visually present the measurement result.

Interpretation of terms:

superconducting direct current induction heater: the traditional electromagnetic induction heating technology is widely applied to the field of steel processing industry due to the advantages of simple structure, environmental protection and the like. But when non-ferromagnetic materials such as aluminum or copper are heated, the electrical energy utilization of the heater is greatly reduced. The superconducting direct current induction heating is an organic combination of a superconducting power application technology and an induction heating technology, makes full use of the low loss characteristic of superconductivity in a direct current environment, and simultaneously combines an electromagnetic induction technology to realize preheating before an aluminum extrusion link in the aluminum processing industry. Compared with the traditional alternating current induction heating technology, the method has great advantages in the aspects of electric energy utilization rate and workpiece heating effect.

High-temperature superconduction: mainly refers to a second generation high temperature superconducting tape represented by Y1Ba2Cu3O7-7 (abbreviated as YBCO or Y123). It uses YBCO coating as superconductor, and generally consists of base band, isolating layer, YBCO superconducting layer and protecting layer. The high-temperature superconducting tapes have different high-temperature superconducting tapes of one generation and two generations according to different manufacturing processes. Among them, the so-called first-generation high-temperature superconducting tapes based on a bismuth-based BSCCO superconducting oxide; the yttrium YBCO superconducting oxide coating film is called a second generation high-temperature superconducting tape.

High-temperature superconducting magnet: an effective magnet link is formed by a coil wound with a high temperature superconducting coil and by an iron core.

The measuring method specifically comprises the following steps:

step 1, determining a measurement range on a measurement device according to the distribution condition of an air gap magnetic field of a high-temperature superconducting direct current induction heater.

Specifically, the bottom plate of the measuring device can be an acrylic plate, a plurality of groups of hole sites are pre-arranged on the bottom plate and used for mounting sensors, and each group of hole sites can comprise a predetermined number of small holes and is used for determining a range from the bottom plate as a measuring range according to the distribution condition of the air gap magnetic field for measurement.

Step 2, determining a preset number of measurement hole sites within the measurement range determined in the step 1 according to preset measurement accuracy, wherein the measurement hole sites are arranged in an array mode, other hole sites on the bottom plate can be used as reserved hole sites, and the reserved hole sites and the measurement hole sites can be mutually converted when the measurement range needs to be changed, as shown in fig. 3, a front schematic view of the array type magnetic field measurement device in the embodiment of the application is shown, and in the drawing, 6 is a reserved hole site for mounting the magnet hall sensor.

And 3, respectively installing Hall sensors on the measurement hole positions to form Hall sensors arranged in an array manner.

Specifically, the Hall sensors are respectively arranged on the measurement hole sites, and the output ends of the Hall sensors are connected with the input interface of a LabVIEW of a virtual instrument software development platform during installation, so that measurement data can be transmitted into the LabVIEW.

And 4, moving the measuring bottom plate with the Hall sensors to a measuring position, supplying power to each Hall sensor by adopting a constant current source, outputting a measuring signal of each Hall sensor to LabVIEW, and displaying a measuring result after processing through the LabVIEW.

Specifically, the air gap magnetic field of the high-temperature superconducting dc induction heater can be measured by moving the measurement base plate to a measurement position through a corresponding movable structure, such as a sliding track, etc., as shown in fig. 2, which is a schematic diagram of measuring the air gap magnetic field of the high-temperature superconducting dc induction heater by using the array type magnetic field measurement device in the application embodiment, in the figure, the left magnet column 1, the middle magnet column 2, the magnet base 3, and the right magnet column 4 are used as iron cores of the superconducting magnet, each iron core forms a magnetic link and forms an air gap magnetic field, and the array type magnetic field measurement device 5 is moved to the measurement position in the air gap magnetic field for measurement.

During measurement, each Hall sensor is powered by a 5mA constant current source, the magnetic field Hall sensors can adopt HZ-312C, as shown in FIG. 4, the power circuit diagram of the array type magnetic field measuring device in the embodiment of the application is shown, 5mA output of the constant current source is realized by a three-terminal adjustable positive regulator integrated circuit LM317, R4 is a current-limiting resistor displayed by an input power diode, and a light-emitting diode D1 indicates whether the input power source works normally or not. The resistors R1, R2 and R3 form a constant current source control circuit, and the current value of the output constant current source is adjusted by adjusting the resistors R3 and R2. J1 is an input power outlet and J2 is an output power outlet.

The measurement signals of the hall sensors are output to the LabVIEW, the measurement results are displayed after the processing of the LabVIEW, as shown in fig. 5, the array type magnetic field measurement monitoring interface of the LabVIEW in the embodiment of the application is shown, the numbers of the hall sensors corresponding to the measurement holes can be displayed in the figure, magnet air gap hall distribution is formed, and the aluminum bar area is an air gap magnetic field area for performing high-temperature superconducting direct current heating on the aluminum bar.

By applying the technical scheme, the array type magnetic field measuring device is directly used for measuring at the measuring position, and the measurement data is transmitted into the LabVIEW, so that the efficiency and the accuracy of the measurement of the air gap magnetic field intensity of the high-temperature superconducting direct current induction heater are improved, the measurement result is visually presented through the upper computer monitoring of the LabVIEW, and the user experience is improved.

In order to achieve the above technical object, the present application provides an air gap magnetic field strength measuring apparatus for a high temperature superconducting dc induction heater, wherein a hole site is disposed on a measuring bottom plate of the measuring apparatus, as shown in fig. 6, the air gap magnetic field strength measuring apparatus comprises:

a first determining module 601, configured to determine a first range on the measurement baseplate according to the distribution of the air gap magnetic field;

a second determining module 602, configured to determine a preset number of measurement hole locations within the first range according to a preset measurement accuracy, where the measurement hole locations are specifically arranged in an array;

a mounting module 603, configured to mount a sensor on each of the measurement holes respectively;

a measurement module 604 for moving the measurement base plate to a measurement position and performing a measurement based on the measurement position.

In a specific application scenario, the sensor is specifically a hall sensor, and the installation module 603 is specifically configured to:

fixing the sensors on the measurement hole sites respectively;

and connecting the output end of each sensor with an input interface of a virtual instrument software development platform LabVIEW.

In a specific application scenario, the measurement module 604 is specifically configured to:

enabling each sensor to receive constant current source power supply;

and inputting a measurement signal into the LabVIEW by each sensor, so that the LabVIEW processes the measurement signal to determine a measurement result.

In a specific application scenario, the measurement bottom plate further comprises a second range, and hole sites in the second range are used as reserved hole sites.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by hardware, or by software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.), and includes instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the method according to the implementation scenarios of the present invention.

Those skilled in the art will appreciate that the figures are merely schematic representations of one preferred implementation scenario and that the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.

Those skilled in the art will appreciate that the modules in the apparatus may be distributed in the apparatus according to the description of the implementation scenario, or may be located in one or more apparatuses different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.

The above-mentioned invention numbers are merely for description and do not represent the merits of the implementation scenarios.

The above disclosure is only a few specific implementation scenarios of the present invention, however, the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.