Intermediate frequency furnace circulating water cooling monitoring system based on Internet of Things

Abstract

The invention belongs to the technical field of intermediate frequency furnace management and control, and particularly relates to an intermediate frequency furnace circulating water cooling monitoring system based on the Internet of Things, which comprises a water inlet monitoring unit, a water outlet monitoring unit, a circulating water sampling unit and a touch panel unit, the core parameters of the cooling water of the intermediate frequency furnace are accurately monitored in real time through the sensor technology and based on the Internet of Things, when any parameter exceeds the preset safety range, an operator is reminded to take necessary measures, and equipment overheating or other potential risks caused by insufficient cooling are prevented; the circulating water sampling unit is used for sampling water at the water inlet end of the intermediate frequency furnace and detecting the quality of the sampled water, a user is reminded to treat the circulating water of the intermediate frequency furnace when a circulating water abnormal signal is generated, safe operation of the intermediate frequency furnace is facilitated, the service life of the intermediate frequency furnace is prolonged, and the operation management difficulty of the intermediate frequency furnace is remarkably reduced; and the intelligent level is high.

Description

Technical Field

[0001] The present invention relates to the technical field of medium frequency furnace control and management, and in particular to a medium frequency furnace circulating water cooling monitoring system based on the Internet of Things. Background Art

[0002] Medium frequency furnaces are widely used for melting and heating non-ferrous and ferrous metals. They use a three-phase bridge-type fully controlled rectifier circuit to rectify three-phase industrial frequency AC into DC, and then convert DC into adjustable medium frequency current. The medium frequency alternating current generates high-density magnetic lines through capacitors and induction coils. The magnetic lines cut the metal material contained in the induction coil, thereby generating eddy currents in the metal material, causing the free electrons of the metal itself to flow in the metal body with resistance and generate heat, thereby heating and melting the metal.

[0003] However, the medium frequency furnace will generate a lot of heat during operation, which is easy to damage the equipment and even cause safety accidents. Therefore, the cooling system of the medium frequency furnace is very important. The traditional medium frequency furnace cooling system usually adopts circulating water cooling, using cooling water to take away the heat generated by the medium frequency furnace and transfer the heat to the external environment through a heat exchanger. However, it is currently difficult to monitor the parameters such as the flow rate, temperature and pressure of the circulating water in real time and display early warnings in time, and it is impossible to reasonably evaluate the water condition, which is not conducive to ensuring the safe operation of the medium frequency furnace and extending its service life;

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a medium frequency furnace circulating water cooling monitoring system based on the Internet of Things, which solves the problem that when the existing technology uses circulating water cooling to cool the medium frequency furnace, it is difficult to monitor the parameters such as the flow rate, temperature and pressure of the circulating water in real time and display early warnings in time, and it is impossible to reasonably evaluate the water condition, which is not conducive to ensuring the safe operation of the medium frequency furnace and improving its service life, and the problem of low intelligence level.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The circulating water cooling monitoring system of the medium frequency furnace based on the Internet of Things includes a water inlet monitoring unit, a water outlet monitoring unit, a circulating water sampling unit and a touch panel unit; the water inlet monitoring unit uses a sensor to monitor the water inlet end of the medium frequency furnace, collects the water inlet temperature, water inlet flow and water inlet pressure and sends them to the touch panel unit; the water outlet monitoring unit uses a sensor to monitor the water outlet end of the medium frequency furnace, collects the water outlet temperature and water outlet flow and sends them to the touch panel unit;

[0008] The touch panel unit compares each monitoring data with the corresponding set alarm threshold one by one, and issues an alarm when there is monitoring data that does not meet the corresponding preset requirements; the circulating water sampling unit samples water at the water inlet end of the medium frequency furnace, and performs quality inspection on the sampled water. It determines whether a circulating water abnormality signal is generated through analysis, and when a circulating water abnormality signal is generated, it is sent to the touch panel unit for display and alarm.

[0009] Furthermore, the main interface of the touch panel unit includes alarm records, data records, parameter settings, system alarm lights, alarm information display area, water inlet information display area, water outlet information display area and flow difference display area; wherein, after clicking on the alarm record, select to view the alarm history record in the pop-up window, and after clicking on the data record, select to view the data history record in the pop-up window;

[0010] After clicking parameter settings, enter the login password of the relevant authority. After the password is verified, check or change the corresponding parameters. The system alarm lights are composed of five alarm lights representing the inlet water temperature, outlet water temperature, inlet water pressure, inlet water flow and flow difference. The alarm information display area is used to display the alarm information of the inlet water temperature, outlet water temperature, inlet water pressure, inlet water flow and flow difference.

[0011] The water inlet information display area is used to display the water inlet flow, pressure and temperature information, the water outlet information display area is used to display the water outlet flow and temperature information, and the flow difference display area is used to display the difference information between the water inlet flow and the water outlet flow.

[0012] Further, after clicking to enter the parameter setting, the parameter setting interface consists of a parameter setting input box, a filter time setting box, an upper and lower limit setting box for the inlet water pressure, a flow meter type switching button, a system setting button, a parameter extraction button, a parameter saving button, and a return button; wherein the parameter setting input box is used to set the alarm thresholds of the inlet water temperature, the outlet water temperature, the inlet water pressure, the inlet water flow rate, and the flow rate difference;

[0013] The filter time setting box is used to set the filter time. The filter time is the time that the alarm threshold is exceeded, which is the input value × 0.1 seconds. The factory default value of the filter time is 30, that is, an alarm is triggered after 3 seconds of exceeding the limit. The water inlet pressure upper and lower limit setting box is used to set the water pressure upper and lower limit values ​​according to the selected pressure sensor model. The flow meter type switch button is used to switch the type of flow sensor used.

[0014] After clicking the system settings button, the user needs to enter the password as a senior administrator to access the system to view or change the system IP, port number, and MODBUS station number; after clicking the parameter extraction button, the current system parameters are read to the interface for viewing, and after clicking the parameter save button, the set parameters are saved, and the system works according to the saved parameters; after clicking the return button, the main interface of the touch panel unit is entered.

[0015] Furthermore, after clicking on the alarm record or data record, a time selection button and a return button are displayed. After clicking the time selection button, a time range setting window pops up. The user can query the alarm information or corresponding data information of the most recent time or specified time according to needs, and enter the main interface of the touch panel unit after clicking the return button.

[0016] Furthermore, the specific analysis process of the circulating water sampling unit includes:

[0017] The content of solid particles in the sampled water is collected and marked as an impurity detection value, and the pH value of the sampled water is collected and marked as an acid-base detection value, and the impurity detection value and the acid-base detection value are numerically compared with a preset impurity detection threshold and a preset acid-base detection value range, respectively, and if the impurity detection value exceeds the preset impurity detection threshold or the acid-base detection value is not within the preset acid-base detection value range, a circulating water abnormality signal is generated;

[0018] If the impurity detection value does not exceed the preset impurity detection threshold and the acid-base detection value is within the preset acid-base detection value range, the pollutant parameters required to be monitored in the sampled water body are obtained, and the concentration of the corresponding pollutant parameters is marked as the pollution concentration detection value. The pollution concentration detection value is numerically compared with the corresponding preset pollution concentration detection threshold. If the pollution concentration detection value exceeds the corresponding preset pollution concentration detection threshold, the corresponding pollutant parameter is marked as an excessive substance; if there are excessive substances in the sampled water body, a circulating water abnormality signal is generated.

[0019] Furthermore, if there are no excessive substances in the sampled water, each group of pollutant parameters is set in advance to correspond to a group of preset weight values, the ratio of the pollution concentration detection value of the corresponding pollutant parameter to the corresponding preset pollution concentration detection threshold is marked as the pollution concentration percentage value, the product of the pollution concentration percentage value and the corresponding preset weight value is marked as the pollution analysis value, the pollution analysis values ​​of all pollutant parameters are summed up and calculated to obtain the total pollution detection value, the total pollution detection value is numerically compared with the preset total pollution detection threshold, and if the total pollution detection value exceeds the preset total pollution detection threshold, a circulating water abnormality signal is generated.

[0020] Furthermore, the touch panel unit communicates with a panel usage monitoring unit, which monitors the operation of the touch panel and comprehensively analyzes the operating status of the touch panel unit, thereby generating a panel alarm signal or a panel qualification signal, and sending the panel alarm signal to the management terminal. The management terminal issues a warning when receiving the panel alarm signal.

[0021] Furthermore, the specific analysis process of the panel usage monitoring unit includes:

[0022] The temperatures at several positions in the touch panel unit are collected, and the temperatures at the corresponding positions are numerically compared with the corresponding preset temperature thresholds. If the temperature exceeds the corresponding preset temperature threshold, it is determined that the corresponding position is in an over-temperature state; the total duration of the corresponding position in the over-temperature state per unit time is collected and marked as an abnormal duration value, and the temperature characteristic value is obtained by averaging all the temperatures at the corresponding position per unit time, and the abnormal duration value and the temperature characteristic value are numerically compared with the preset abnormal duration threshold and the preset temperature characteristic threshold, respectively. If the abnormal duration value or the temperature characteristic value exceeds the corresponding preset threshold, the corresponding position is marked as an abnormal position;

[0023] If there is an abnormal position in the touch panel unit, a panel alarm signal is generated; if there is no abnormal position in the touch panel unit, the display brightness of the touch panel unit is collected, and the display brightness is compared with the corresponding preset display brightness range. If the display brightness is not within the corresponding preset display brightness range, it is determined that the touch display panel is in an inaccurate display control state; the total time length during which the touch panel unit is in an inaccurate display control state per unit time is obtained and marked as an inaccurate display control time length;

[0024] When it is determined that the touch display panel is in an inaccurate display and control state, the deviation value of the display brightness compared to the preset display brightness range is marked as a display and control amplitude deviation value, the average of all display and control amplitude deviation values ​​within a unit time is calculated to obtain the display and control inaccurate amplitude, the display and control inaccurate time length and the display and control inaccurate amplitude are weighted and summed to obtain the display and control monitoring value, the display and control monitoring value is numerically compared with the preset display and control monitoring threshold, and if the display and control monitoring value exceeds the preset display and control monitoring threshold, a panel alarm signal is generated.

[0025] Further, if the display control monitoring value does not exceed the preset display control monitoring threshold, when the user clicks the touch panel unit or inputs information, the reaction time of the touch panel unit is collected, and the reaction time is compared with the preset reaction time threshold. If the reaction time exceeds the preset reaction time threshold, the corresponding reaction time is marked as abnormal reaction time;

[0026] The number of abnormal reaction durations per unit time is obtained and the ratio thereof is calculated with the total number of reaction durations to obtain the abnormal reaction monitoring value, and the average of all reaction durations per unit time is calculated to obtain the reaction performance value, and the reaction duration with the largest value per unit time is marked as the reaction time amplitude; the panel review value is obtained by weighted summing up the abnormal reaction monitoring value, the reaction performance value and the reaction time amplitude, and the panel review value is numerically compared with the preset panel review threshold. If the panel review value exceeds the preset panel review threshold, a panel alarm signal is generated; if the panel review value does not exceed the preset panel review threshold, a panel qualified signal is generated.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In the present invention, the core parameters of the cooling water of the medium frequency furnace are monitored in real time and accurately based on the Internet of Things through sensor technology, so as to promptly remind the operator to take necessary measures to prevent equipment overheating or other potential risks caused by insufficient cooling, and the water body is sampled at the water inlet of the medium frequency furnace through the circulating water sampling unit and the sampled water body is tested for quality. When the abnormal circulating water signal is generated, the user is reminded to process the circulating water of the medium frequency furnace, which is beneficial to the safe operation of the medium frequency furnace and prolongs its service life, and significantly reduces the difficulty of operation and management of the medium frequency furnace;

[0029] 2. In the present invention, the operation of the touch panel is monitored and the operating status of the touch panel unit is comprehensively analyzed through the panel usage monitoring unit, and a panel alarm signal or a panel qualified signal is generated accordingly. When the panel alarm signal is generated, an early warning is issued to achieve comprehensive monitoring and abnormal early warning of the touch panel unit, and the touch panel unit is inspected and repaired in time, thereby improving the operating safety and sensitivity of the touch panel unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings;

[0031] Figure 1 This is a system block diagram of Embodiment 1 of the present invention;

[0032] Figure 2 This is a system block diagram of Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1: Figure 1 As shown, the circulating water cooling monitoring system for a medium frequency furnace based on the Internet of Things proposed in the present invention includes a water inlet monitoring unit, a water outlet monitoring unit, a circulating water sampling unit and a touch panel unit; the water inlet monitoring unit uses a sensor (including a temperature sensor, a water pressure sensor and a flow sensor) to monitor the water inlet end of the medium frequency furnace, collects the water inlet temperature, water inlet flow and water inlet pressure and sends them to the touch panel unit; the water outlet monitoring unit uses a sensor (including a temperature sensor and a flow sensor) to monitor the water outlet end of the medium frequency furnace, collects the water outlet temperature and water outlet flow and sends them to the touch panel unit;

[0035] The touch panel unit compares each monitoring data with the corresponding alarm threshold value set one by one, and issues an alarm when there is monitoring data that does not meet the corresponding preset requirements, such as insufficient water inlet pressure, high water inlet temperature, etc. It should be noted that the main interface of the touch panel unit includes alarm records, data records, parameter settings, system alarm lights, alarm information display areas, water inlet information display areas, water outlet information display areas and flow difference display areas;

[0036] Among them, after clicking on the alarm record, select to view the alarm history in the pop-up window, and after clicking on the data record, select to view the data history in the pop-up window; and, after clicking on the alarm record or the data record, a time selection button and a return button are displayed. After clicking the time selection button, a time range setting window pops up, and the user can query the alarm information or corresponding data information of the most recent time or specified time according to needs, and enter the main interface of the touch panel unit after clicking the return button.

[0037] After clicking parameter setting, enter the login password of the relevant authority. After the password is verified, view or change the corresponding parameters. After clicking to enter parameter setting, the parameter setting interface consists of parameter setting input box, filter time setting box, water inlet pressure upper and lower limit setting box, flow meter type switching button, system setting button, parameter extraction button, parameter saving button and return button. Among them, the parameter setting input box is used to set the alarm thresholds of water inlet temperature, water outlet temperature, water inlet pressure, water inlet flow and flow difference.

[0038] The filter time setting box is used to set the filter time. The filter time is the time that the alarm threshold is exceeded, which is the input value × 0.1 seconds. The factory default value of the filter time is 30, that is, an alarm is triggered after 3 seconds of exceeding the limit. The water inlet pressure upper and lower limit setting box is used to set the water pressure upper and lower limit values ​​according to the selected pressure sensor model. The flow meter type switch button is used to switch the type of flow sensor used.

[0039] After clicking the system setting button, the user needs to enter the password as a senior administrator to access the system to view or change the system IP, port number, MODBUS station number, etc.; after clicking the parameter extraction button, the current system parameters are read to the interface for viewing, and after clicking the parameter save button, the set parameters are saved, and the system works according to the saved parameters; after clicking the return button, the main interface of the touch panel unit is entered.

[0040] The system alarm lights consist of five alarm lights representing the inlet water temperature, outlet water temperature, inlet water pressure, inlet water flow and flow difference. The alarm information display area is used to display the alarm information of the inlet water temperature, outlet water temperature, inlet water pressure, inlet water flow and flow difference; the inlet end information display area is used to display the inlet end flow, pressure and temperature information, the outlet end information display area is used to display the outlet end flow and temperature information, and the flow difference display area is used to display the difference information between the inlet flow and the outlet flow.

[0041] The present invention uses advanced sensor technology to accurately monitor the five core parameters of the medium frequency furnace cooling water in real time, namely, water inlet flow, water inlet pressure, water inlet temperature, water outlet flow and temperature, to ensure that the cooling system is always in the best working state. When any of the parameters exceeds the preset safety range, the system will immediately trigger the alarm mechanism, and remind the operator to take necessary measures through sound and light signals to prevent equipment overheating or other potential risks caused by insufficient cooling;

[0042] In addition, the system also has a powerful data recording function that can automatically save historical data, helping managers to gain an in-depth understanding of the equipment's operating status and provide a scientific basis for subsequent maintenance plans. Its friendly touch screen interface makes the operation simple and intuitive, and even non-professionals can easily get started.

[0043] The circulating water sampling unit samples water from the water inlet of the medium frequency furnace and performs quality inspection on the sampled water. It determines whether a circulating water abnormality signal is generated through analysis. When a circulating water abnormality signal is generated, it is sent to the touch panel unit for display and alarm to remind the user to process the circulating water of the medium frequency furnace in time to avoid the input water affecting the cooling of the medium frequency furnace and reduce the damage caused by the water to the medium frequency furnace, which is beneficial to the safe operation of the medium frequency furnace and prolongs its service life. The specific analysis process is as follows:

[0044] The content of solid particles in the sampled water is collected and marked as an impurity detection value, and the pH value of the sampled water is collected and marked as an acid-base detection value, and the impurity detection value and the acid-base detection value are numerically compared with a preset impurity detection threshold and a preset acid-base detection value range, respectively. If the impurity detection value exceeds the preset impurity detection threshold or the acid-base detection value is not within the preset acid-base detection value range, it indicates that the quality of the circulating water is poor, and a circulating water abnormality signal is generated;

[0045] If the impurity detection value does not exceed the preset impurity detection threshold and the acid-base detection value is within the preset acid-base detection value range, the pollutant parameters (such as chloride content, nitrate content, sulfate content, etc.) required to be monitored in the sampled water body are obtained, and the concentration of the corresponding pollutant parameter is marked as the pollution concentration detection value. The pollution concentration detection value is numerically compared with the corresponding preset pollution concentration detection threshold. If the pollution concentration detection value exceeds the corresponding preset pollution concentration detection threshold, the corresponding pollutant parameter is marked as an excessive substance; if there are excessive substances in the sampled water body, indicating that the quality of the circulating water is poor, a circulating water abnormality signal is generated.

[0046] Furthermore, if there are no excessive substances in the sampled water, each group of pollutant parameters is set in advance to correspond to a group of preset weight values, wherein the preset weight values ​​are all positive numbers, and the higher the adverse effect of the corresponding pollutant parameters on the quality of the circulating water, the greater the value of the preset weight value that matches it;

[0047] The ratio of the pollution concentration detection value of the corresponding pollutant parameter to the corresponding preset pollution concentration detection threshold is marked as the pollution concentration percentage value, the product of the pollution concentration percentage value and the corresponding preset weight value is marked as the pollution analysis value, the pollution analysis values ​​of all pollutant parameters are summed up to obtain the total pollution detection value, the total pollution detection value is numerically compared with the preset total pollution detection threshold, if the total pollution detection value exceeds the preset total pollution detection threshold, indicating that the overall quality of the circulating water is poor, then a circulating water abnormality signal is generated.

[0048] Embodiment 2: Figure 2 As shown, the difference between this embodiment and the first embodiment is that the touch panel unit is communicatively connected to the panel usage monitoring unit, the panel usage monitoring unit monitors the operation of the touch panel, and comprehensively analyzes the operation status of the touch panel unit, thereby generating a panel alarm signal or a panel qualified signal, and sending the panel alarm signal to the management terminal;

[0049] When the management terminal receives the panel alarm signal, it issues an early warning to achieve comprehensive monitoring and abnormal early warning of the touch panel unit, and timely inspect and repair the touch panel unit to improve the operating safety and sensitivity of the touch panel unit; the specific analysis process of the panel usage monitoring unit is as follows:

[0050] The temperatures at several positions in the touch panel unit are collected, and the temperatures at the corresponding positions are numerically compared with the corresponding preset temperature thresholds. If the temperature exceeds the corresponding preset temperature threshold, it is determined that the corresponding position is in an over-temperature state; the total duration of the corresponding position in the over-temperature state within a unit time is collected and marked as an abnormal duration value, and the average of all temperatures at the corresponding position within a unit time is calculated to obtain a temperature characteristic value;

[0051] The abnormal duration value and the temperature characteristic value are numerically compared with the preset abnormal duration threshold value and the preset temperature characteristic threshold value respectively. If the abnormal duration value or the temperature characteristic value exceeds the corresponding preset threshold value, it indicates that the temperature performance of the corresponding position is poor and the safety hazard to the touch panel unit is high, then the corresponding position is marked as an abnormal position;

[0052] If there is an abnormal position in the touch panel unit, a panel alarm signal is generated; if there is no abnormal position in the touch panel unit, the display brightness of the touch panel unit is collected, and the display brightness is compared with the corresponding preset display brightness range. If the display brightness is not within the corresponding preset display brightness range, it is determined that the touch display panel is in an inaccurate display control state; the total time length during which the touch panel unit is in an inaccurate display control state per unit time is obtained and marked as an inaccurate display control time length;

[0053] When it is determined that the touch display panel is in an inaccurate display control state, the deviation value of the display brightness compared to the preset display brightness range is marked as a display control amplitude difference value, and the average of all display control amplitude differences within a unit time is calculated to obtain the display control inaccurate amplitude;

[0054] The display and control monitoring value is obtained by performing weighted summation on the display and control inaccuracy time length and the display and control inaccuracy amplitude, that is, the display and control inaccuracy time length and the display and control inaccuracy amplitude are respectively assigned corresponding preset weight coefficients, the display and control inaccuracy time length and the display and control inaccuracy amplitude are respectively multiplied by the corresponding preset weight coefficients, and the two sets of multiplication results are summed up to obtain the display and control monitoring value; the display and control monitoring value is numerically compared with the preset display and control monitoring threshold value, if the display and control monitoring value exceeds the preset display and control monitoring threshold value, indicating that the display control performance of the touch panel unit in unit time is poor, then a panel alarm signal is generated.

[0055] Further, if the display control monitoring value does not exceed the preset display control monitoring threshold, indicating that the display control performance of the touch panel unit per unit time is good, then when the user clicks the touch panel unit or inputs information, the reaction time of the touch panel unit is collected, wherein the larger the value of the reaction time, the slower the reaction to the corresponding user operation, and the reaction time is compared with the preset reaction time threshold, and if the reaction time exceeds the preset reaction time threshold, the corresponding reaction time is marked as abnormal reaction time;

[0056] The number of abnormal reaction durations per unit time is obtained and the ratio thereof is calculated with the total number of reaction durations to obtain the abnormal reaction monitoring value, and the average of all reaction durations per unit time is calculated to obtain the reaction performance value, and the reaction duration with the largest value per unit time is marked as the reaction time amplitude;

[0057] The panel review value is obtained by weighted summing the abnormal reaction monitoring value, the reaction performance value and the reaction time amplitude, that is, by assigning corresponding preset weight coefficients to the abnormal reaction monitoring value, the reaction performance value and the reaction time amplitude, respectively, multiplying the abnormal reaction monitoring value, the reaction performance value and the reaction time amplitude with the corresponding preset weight coefficients, and summing the three sets of product results to obtain the panel review value;

[0058] The panel review value is numerically compared with the preset panel review threshold. If the panel review value exceeds the preset panel review threshold, it indicates that the operation response of the touch panel unit is not sensitive and its use effect is poor, then a panel alarm signal is generated; if the panel review value does not exceed the preset panel review threshold, it indicates that the operation response of the touch panel unit is relatively sensitive. Overall, the operation performance of the touch panel unit is good, then a panel qualified signal is generated.

[0059] The working principle of the present invention: when in use, the water inlet flow, water inlet pressure, water inlet temperature, water outlet flow and water outlet temperature of the cooling water of the medium frequency furnace are monitored in real time and accurately through sensor technology and based on the Internet of Things, ensuring that the cooling system is always in the best working state. When any of the parameters exceeds the preset safety range, the alarm mechanism is immediately triggered to remind the operator to take necessary measures to prevent equipment overheating or other potential risks caused by insufficient cooling. The circulating water sampling unit is used to sample water at the water inlet end of the medium frequency furnace and the sampled water is quality tested. Analysis is performed to determine whether a circulating water abnormality signal is generated. When a circulating water abnormality signal is generated, the user is reminded to process the circulating water of the medium frequency furnace to avoid the input water affecting the cooling of the medium frequency furnace and reduce the damage caused by the water to the medium frequency furnace, which is beneficial to the safe operation of the medium frequency furnace and increases its service life, significantly reduces the difficulty of operation and management of the medium frequency furnace, and has a high level of intelligence.

[0060] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The medium frequency furnace circulating water cooling monitoring system based on the Internet of Things is characterized by: It includes a water inlet monitoring unit, a water outlet monitoring unit, a circulating water sampling unit and a touch panel unit; the water inlet monitoring unit uses a sensor to monitor the water inlet end of the medium frequency furnace, and the water outlet monitoring unit uses a sensor to monitor the water outlet end of the medium frequency furnace. The touch panel unit compares each monitoring data with the corresponding alarm threshold value set one by one, and issues an alarm when there is monitoring data that does not meet the corresponding preset requirements; The circulating water sampling unit samples water at the water inlet of the medium frequency furnace and performs quality inspection on the sampled water. It determines whether a circulating water abnormality signal is generated through analysis. When a circulating water abnormality signal is generated, it is sent to the touch panel unit for display and alarm.

2. The medium frequency furnace circulating water cooling monitoring system based on the Internet of Things according to claim 1 is characterized in that: The main interface of the touch panel unit includes alarm records, data records, parameter settings, system alarm lights, alarm information display area, water inlet information display area, water outlet information display area and flow difference display area.

3. The medium frequency furnace circulating water cooling monitoring system based on the Internet of Things according to claim 2 is characterized in that: After clicking to enter the parameter setting, the parameter setting interface consists of the parameter setting input box, filter time setting box, water inlet pressure upper and lower limit setting box, flow meter type switching button, system setting button, parameter extraction button, parameter save button and return button.

4. The medium frequency furnace circulating water cooling monitoring system based on the Internet of Things according to claim 2 is characterized in that: After clicking the alarm record or data record, a time selection button and a return button are displayed. After clicking the time selection button, a time range setting window pops up. The user can query the alarm information or corresponding data information at the most recent time or specified time as needed. After clicking the return button, the main interface of the touch panel unit is entered.

5. The medium frequency furnace circulating water cooling monitoring system based on the Internet of Things according to claim 1 is characterized in that: The specific analysis process of the circulating water sampling unit includes: If the impurity detection value exceeds the preset impurity detection threshold or the acid-base detection value is not within the preset acid-base detection value range, a circulating water abnormality signal is generated; if the impurity detection value does not exceed the preset impurity detection threshold and the acid-base detection value is within the preset acid-base detection value range, the pollutant parameters required to be monitored in the sampled water body are obtained, and if the pollution concentration detection value exceeds the corresponding preset pollution concentration detection threshold, the corresponding pollutant parameters are marked as excessive substances; if there are excessive substances in the sampled water body, a circulating water abnormality signal is generated.

6. The medium frequency furnace circulating water cooling monitoring system based on the Internet of Things according to claim 5 is characterized in that: If there are no excessive substances in the sampled water, the pollution analysis values ​​of all pollutant parameters are summed up to obtain the total pollution inspection value. If the total pollution inspection value exceeds the preset total pollution inspection threshold, a circulating water abnormality signal is generated.

7. The medium frequency furnace circulating water cooling monitoring system based on the Internet of Things according to claim 1 is characterized in that: The touch panel unit is communicatively connected to a panel usage monitoring unit, which monitors the operation of the touch panel and comprehensively analyzes the operation status of the touch panel unit, thereby generating a panel alarm signal or a panel qualification signal, and sending the panel alarm signal to the management terminal.

8. The medium frequency furnace circulating water cooling monitoring system based on the Internet of Things according to claim 7 is characterized in that: The specific analysis process of the panel usage monitoring unit includes: If there is an abnormal position in the touch panel unit, a panel alarm signal is generated; if there is no abnormal position in the touch panel unit, the display and control inaccuracy duration and the display and control inaccuracy amplitude are weighted and summed to obtain the display and control monitoring value. If the display and control monitoring value exceeds the preset display and control monitoring threshold, a panel alarm signal is generated.

9. The medium frequency furnace circulating water cooling monitoring system based on the Internet of Things according to claim 8 is characterized in that: If the display and control monitoring value does not exceed the preset display and control monitoring threshold, the panel review value is calculated by weighted summing up the abnormal response monitoring value, reaction performance value and reaction amplitude. If the panel review value exceeds the preset panel review threshold, a panel alarm signal is generated; otherwise, a panel qualified signal is generated.

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