Vacuum high-temperature furnace cooling intelligent control system and control method thereof

Abstract

The invention discloses a vacuum high-temperature furnace cooling intelligent control system and a control method thereof, relates to the field of high-temperature furnace cooling regulation and control, and solves the problems that an existing high-temperature furnace temperature monitoring and control method is low in accuracy and difficult to accurately control. The temperature detection module is used for detecting the water supply temperature in real time and feeding back a temperature detection signal; the flow detection module is used for detecting the water return flow in real time and feeding back a flow detection signal; the cooling control module is used for receiving and responding to the temperature detection signal and the flow detection signal so as to control the cooling water system to regulate and control operation parameters; according to the intelligent cooling control system for the vacuum high-temperature furnace and the control method of the intelligent cooling control system, accurate temperature and flow information can be obtained through detection, operation parameters can be adjusted in time in real time, and normal operation of a cooling water system is guaranteed.

Description

Technical Field

[0001] The invention relates to a vacuum high temperature furnace cooling technology, and in particular to a vacuum high temperature furnace cooling intelligent control system. Background Art

[0002] A vacuum high temperature furnace will generate a lot of heat during operation. If it is not cooled in time, the furnace body temperature will be too high, which will cause the furnace body to deform, affect the dimensional accuracy of the equipment, and the furnace body flange sealing ring will overheat and decay, causing the furnace cavity to break the vacuum, reduce the oxidation of the furnace body and internal components, and affect the service life. Cooling water can effectively absorb and take away this heat, maintain the furnace body and related components within the appropriate temperature range, ensure the normal operation of the equipment, and improve the furnace temperature uniformity in the vacuum furnace to a certain extent.

[0003] The commonly used monitoring methods include: Empirical formula estimation: the required temperature and water flow are estimated by establishing an empirical formula, and the operator adjusts the parameters according to the formula. This method has relatively low accuracy and requires high operator experience. Manual monitoring, through regular measurement and adjustment by personnel; this method has the problems of untimely monitoring, low accuracy, high labor intensity, and difficulty in precise control; Furnace surface monitoring, by installing sensors on the furnace surface to detect and judge the cooling effect, but this is affected by various factors on the furnace surface, and the accuracy and reliability are relatively low; Existing methods all have problems of low accuracy and difficulty in precise control, which need to be solved urgently. Summary of the invention

[0004] The purpose of the present invention is to provide a vacuum high temperature furnace cooling intelligent control system, which can detect and obtain accurate temperature and flow information, and can adjust PID operating parameters in real time to ensure the normal operation of the cooling water system.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A vacuum high temperature furnace cooling intelligent control system includes a cooling water system and also includes: The temperature detection module is arranged in the water supply pipe of the vacuum high temperature furnace cooling water system to detect the water supply temperature in real time and feed back the temperature detection signal; The flow detection module is arranged in the return water pipe of the vacuum high temperature furnace cooling water system to detect the return water flow in real time and feed back the flow detection signal; The cooling control module receives and responds to the temperature detection signal and the flow detection signal, determines the operating state of the cooling water system, and adjusts the PID operating parameters of the cooling water system according to the set temperature and water flow range.

[0006] Preferably, the temperature detection module includes a water supply temperature sensor, which is fixedly installed on and / or near the manifold of the vacuum high-temperature furnace to detect the water supply temperature of the cooling water entering the main pipeline of the vacuum high-temperature furnace of the cooling water system.

[0007] Preferably, the flow detection module includes a return water flow sensor, which is fixedly and sealingly connected to the return water manifold and distributor to detect the return water flow of the cooling chamber system entering the return water pipeline of the vacuum high temperature furnace.

[0008] Preferably, the installation direction of the return water flow sensor is consistent with the water flow direction in the return water pipeline.

[0009] Preferably, the cooling water system includes an analog valve fixedly installed on the return water pipe of the cooling water system at the front end of the return water flow sensor along the water flow direction, and the analog valve responds to the cooling control module to control the cooling water flow rate.

[0010] Preferably, the cooling control module responds to the temperature detection signal, and when it is detected that the temperature detection signal is lower than or higher than a set water temperature range, controls the cooling water system to adjust the PID operating parameters so that the cooling water temperature is maintained within the normal working water temperature range; The cooling control module responds to the flow detection signal, determines the working efficiency of the cooling water system and the heat dissipation of the furnace according to the change of the return water flow, and adjusts the PID operating parameters of the cooling water system.

[0011] Preferably, the cooling control module continuously monitors and analyzes the return water flow, and issues a fault warning when an abnormal change in the return water flow is detected.

[0012] Preferably, the PID operating parameters of the cooling water system include cooling water flow, cooling water pressure, cooling water temperature, and cooling operation time.

[0013] A cooling intelligent control method applied to the vacuum high temperature furnace cooling intelligent control system comprises the following steps: The temperature detection module detects the water supply temperature of the cooling water system in real time, and the flow monitoring module detects the return water flow of the cooling water system in real time; The cooling control module monitors the supply water temperature and return water flow of the cooling water system in real time and analyzes the changing trends; When the water supply temperature is detected to be beyond the set operating temperature range, the cooling control module controls the cooling water system to adjust the PID operating parameters to control the cooling water temperature to recover and remain within the normal operating temperature range; When the return water flow rate is detected to exceed the set working flow rate range, the cooling control module controls the cooling water system to adjust the PID operating parameters to control the cooling water flow rate and temperature to remain within the normal working range; When an abnormal trend in the return water flow rate is detected, the cooling control module determines the operating status and issues a fault warning.

[0014] Preferably, the cooling control module stores and analyzes historical and real-time temperature detection signals and flow monitoring signals, and analyzes and optimizes cooling strategies for different working conditions.

[0015] In summary, the present invention has the following beneficial effects: The temperature detection module installed in the water supply main pipeline can monitor the incoming cooling water temperature in real time. The monitoring is direct and accurate and is not easily affected by external factors. The flow monitoring module is installed in the return water pipeline, which can accurately feedback the return water flow in real time, making it easy to judge the status of the water cooling water operation system and detect abnormal situations in time, which is convenient for daily maintenance and overhaul, and can ensure the normal operation of the vacuum high-temperature furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a block diagram of the intelligent control system. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0018] A vacuum high temperature furnace will generate a lot of heat during operation. If it is not cooled in time, the high temperature of the furnace body will cause the furnace body to deform, affect the dimensional accuracy of the equipment, and reduce the service life of the furnace body and internal components. The vacuum sealing rubber ring and other sealing components of the vacuum high temperature furnace are sensitive to temperature. High temperature may cause them to age, deform or damage, affecting the vacuum degree in the furnace. Cooling water can reduce the temperature around the sealing components, extend their service life, and ensure the sealing of the vacuum system.

[0019] According to one or more embodiments, a vacuum high temperature furnace cooling intelligent control system is disclosed, such as Figure 1 As shown, it includes a cooling water system, a cooling control module, a temperature detection module, and a flow detection module.

[0020] The temperature detection module detects the water supply temperature in real time and feeds back the temperature detection signal; the flow detection module detects the return water flow in real time and feeds back the flow detection signal; the cooling control module receives and responds to the temperature detection signal and the flow detection signal, and then determines the operating status of the cooling water system, and adjusts the PID operating parameters of the cooling water system according to the set temperature and water flow range.

[0021] The temperature detection module is set in the water supply pipe of the vacuum high-temperature furnace cooling water system, including a water supply temperature sensor. The water supply temperature sensor is generally fixedly installed on and / or near the manifold of the vacuum high-temperature furnace to detect the water supply temperature of the cooling water entering the main pipe of the vacuum high-temperature furnace. By setting it in the water supply pipe, the temperature of the cooling water can be directly measured. The detection is more accurate, not easily affected by other external factors, and can directly reflect the cooling effect of the cooling water system. The water supply temperature sensor can accurately measure the inlet water supply temperature of the cooling water and provide key data for the control system. By continuously monitoring the water supply temperature, the working status of the cooling water system and the impact of environmental changes on the cooling effect can be timely understood.

[0022] Generally speaking, the temperature of the cooling water of a vacuum high-temperature furnace should be controlled at 24℃-34℃. If the water temperature is too high, the cooling effect will be greatly reduced; if the water temperature is too low, the furnace body and related components may be stressed due to sudden temperature changes, and a large amount of temperature in the furnace may be taken away, affecting the stability and service life of the equipment. When the water supply temperature exceeds the set normal range, the water supply temperature sensor can send a signal to the water cooling control module, thereby triggering the early warning system to remind the operator to pay attention to possible problems, such as cooling system failure, increased external ambient temperature, etc. The selection of the water supply temperature sensor should select the appropriate range according to the required cooling water temperature range of the vacuum high-temperature furnace. Within the optional range, select the one with the highest possible accuracy to ensure the accuracy and reliability of the measurement, so as to facilitate timely grasp of the operation of the cooling water system and the heat dissipation of the vacuum high-temperature furnace.

[0023] The flow detection module is set in the return water pipe of the vacuum high temperature furnace cooling water system, including a return water flow sensor. The flow sensor is fixed and sealed to the return water manifold to detect the return water flow of the cooling chamber system entering the return water pipe of the vacuum high temperature furnace. The installation direction of the return water flow sensor is consistent with the water flow direction in the return water pipeline. The return water flow sensor is tightly connected to the return water pipe without leakage. After installation, it needs to be debugged and calibrated to ensure that the sensor can work normally and output accurate flow signals.

[0024] According to the cooling requirements of the vacuum high-temperature furnace and the size of the return water pipe, select a return water flow sensor with high measurement accuracy and appropriate range. Ensure that the return water flow sensor can accurately measure the return water flow rate so as to timely grasp the operation of the cooling water system and the heat dissipation of the vacuum high-temperature furnace.

[0025] The cooling water system includes a return water analog valve for adjusting the cooling water flow rate. The return water analog valve is fixedly installed along the water flow direction at the front end of the return water flow sensor in the return water pipe of the cooling water system, and is tightly connected to the return water flow sensor and the return water pipe without leakage. The cooling water flow rate can be automatically controlled through the control of the cooling control system.

[0026] The return water flow sensor can measure the flow of cooling water from the high-temperature furnace in real time, reflecting the working efficiency of the cooling water system and the heat dissipation of the furnace. By monitoring the return water flow, problems such as pipe blockage and leakage can be discovered in time to ensure the normal operation of the cooling water system. It is preferred to install a filter in front of the return water flow sensor along the water flow direction, and the filter is fixedly connected to the return water pipe of the cooling water system. There should be no turbidity, sediment and other impurities in the cooling water, otherwise it may block the water cooling channel, affect the circulation of water, and reduce the cooling effect. Therefore, the cooling water needs to be filtered to keep it visually clean.

[0027] In order to ensure the accuracy of sensor measurement and anti-interference, the sensor needs to be shielded from external interference signals and fixedly installed to ensure stability and accuracy.

[0028] The cooling control module responds to the temperature detection signal. When it detects that the temperature detection signal is lower than or higher than the set upper and lower water temperature thresholds, it controls the cooling water system to adjust the PID operating parameters so that the cooling water temperature remains within the normal working water temperature range; according to the data fed back by the water supply temperature sensor, the control system can automatically adjust the PID operating parameters of the cooling water system, such as increasing or decreasing the flow of cooling water, adjusting the power of the cooling equipment, etc., to ensure that the temperature of the cooling water always remains within the appropriate range. Combining historical data and real-time monitoring information, the cooling control module can analyze the optimal cooling strategy under different working conditions and realize intelligent operation optimization. For example, increase the amount of cooling water in advance in a high temperature environment, or appropriately reduce the cooling intensity when the equipment is running at low load to save energy.

[0029] The cooling control module responds to the flow detection signal, and judges the working efficiency of the cooling water system and the heat dissipation of the furnace according to the change of the return water flow, and adjusts the PID operating parameters of the cooling water system to adapt to different working conditions. Based on the data of the return water flow sensor, the cooling control module can automatically adjust the flow of cooling water to ensure that the cooling water system can provide the appropriate amount of cooling water according to the actual needs of the high-temperature furnace. For example, when the load of the high-temperature furnace increases, the cooling water flow rate is automatically increased to improve the cooling effect; when the load decreases, the flow rate is appropriately reduced to save energy.

[0030] The cooling control module continuously monitors and analyzes the return water flow, and issues a fault warning when abnormal changes in the return water flow are detected. Through continuous monitoring and analysis of the return water flow, the control system can promptly detect abnormal conditions in the cooling system, such as a sudden drop in flow that may mean a pipe blockage or pump failure, and an abnormal increase in flow that may be due to a pipe leak. The system can automatically issue a fault alarm and take appropriate measures to deal with it, improving the reliability and safety of the equipment.

[0031] The cooling control system can also be equipped with alarm units and periodic maintenance reminders so that staff can conduct timely and regular inspections and maintenance to improve the reliability and safety of the equipment.

[0032] The PID operating parameters of the cooling water system may include cooling water flow, cooling water pressure, cooling water temperature, and cooling operation time. By controlling the cooling water return flow, the return water temperature can be controlled to ensure that the furnace temperature is not too much heat taken away by the cooling water. The supply and return water temperature difference can be controlled within 5-7°C.

[0033] By real-time monitoring and automatic adjustment of the temperature and flow of cooling water, it can be ensured that the vacuum high-temperature furnace always operates under appropriate cooling conditions, avoiding equipment damage or performance degradation caused by problems such as too high or too low temperature, insufficient or excessive flow, and improving the stability and reliability of the equipment.

[0034] At the same time, automatic control can accurately adjust the operating parameters of the cooling system according to actual needs to avoid unnecessary energy waste. For example, reducing the cooling intensity during low-load operation can reduce the energy consumption of the cooling equipment; at the same time, by optimizing the cooling strategy, it can also reduce the consumption of water resources and achieve the goal of energy conservation and emission reduction.

[0035] A stable cooling water system can ensure the continuous operation of the vacuum high-temperature furnace, reduce downtime caused by cooling problems, and improve production efficiency. In addition, intelligent control can also achieve rapid response and automatic adjustment to adapt to different production conditions and improve the flexibility and adaptability of the equipment; it can timely detect faults and abnormal conditions in the cooling system and take corresponding measures to deal with them, avoid the expansion of faults, and reduce the maintenance cost of the equipment. At the same time, by optimizing the operation of the cooling system, the service life of the equipment can be extended and the frequency of equipment replacement and maintenance can be reduced.

[0036] According to one or more embodiments, a cooling intelligent control method applied to the above vacuum high temperature furnace cooling intelligent control system is disclosed, comprising the following steps: The temperature detection module detects the water supply temperature of the cooling water system in real time, and the flow monitoring module detects the return water flow of the cooling water system in real time; The cooling control module monitors the supply water temperature and return water flow of the cooling water system in real time and analyzes the changing trends; When the water supply temperature is detected to be beyond the set operating temperature range, the cooling control module controls the cooling water system to adjust the PID operating parameters to control the cooling water temperature to recover and remain within the normal operating temperature range; When the return water flow rate is detected to exceed the set working flow rate range, the cooling control module controls the cooling water system to adjust the PID operating parameters to control the cooling water flow rate and temperature to remain within the normal working range; When an abnormal trend in the return water flow rate is detected, the cooling control module determines the operating status and issues a fault warning.

[0037] The cooling control module stores and analyzes historical and real-time temperature detection signals and flow monitoring signals, and analyzes and optimizes cooling strategies for different working conditions.

[0038] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A vacuum high temperature furnace cooling intelligent control system, including a cooling water system, characterized in that: Also included are: The temperature detection module is arranged in the water supply pipe of the vacuum high temperature furnace cooling water system to detect the water supply temperature in real time and feed back the temperature detection signal; The flow detection module is arranged in the return water pipe of the vacuum high temperature furnace cooling water system to detect the return water flow in real time and feed back the flow detection signal; The cooling control module receives and responds to the temperature detection signal and the flow detection signal, determines the operating state of the cooling water system, and adjusts the PID operating parameters of the cooling water system according to the set temperature and water flow range.

2. The vacuum high temperature furnace cooling intelligent control system according to claim 1 is characterized in that: The temperature detection module includes a water supply temperature sensor, which is fixedly installed on and / or near the manifold of the vacuum high temperature furnace to detect the water supply temperature of the cooling water entering the main pipeline of the vacuum high temperature furnace from the cooling water system.

3. The vacuum high temperature furnace cooling intelligent control system according to claim 2 is characterized in that: The flow detection module includes a return water flow sensor, which is fixedly and sealedly connected to the return water collector and distributor to detect the return water flow of the cooling chamber system entering the return water pipeline of the vacuum high temperature furnace.

4. The vacuum high temperature furnace cooling intelligent control system according to claim 3 is characterized in that: The installation direction of the return water flow sensor is consistent with the water flow direction in the return water pipeline.

5. The vacuum high temperature furnace cooling intelligent control system according to claim 4 is characterized in that: The cooling water system includes an analog valve fixedly installed on the return water pipe of the cooling water system at the front end of the return water flow sensor along the water flow direction. The analog valve responds to the cooling control module to control the cooling water flow.

6. The vacuum high temperature furnace cooling intelligent control system according to claim 5 is characterized in that: The cooling control module responds to the temperature detection signal and controls the cooling water system to adjust the PID operating parameters so that the cooling water temperature is maintained within the normal working water temperature range when detecting that the temperature detection signal is lower than or higher than the set water temperature range; The cooling control module responds to the flow detection signal, determines the working efficiency of the cooling water system and the heat dissipation of the furnace body according to the change of the return water flow, and adjusts the operating parameters of the cooling water system.

7. The vacuum high temperature furnace cooling intelligent control system according to claim 6 is characterized in that: The cooling control module continuously monitors and analyzes the return water flow, and issues a fault warning when an abnormal change in the return water flow is detected.

8. The vacuum high temperature furnace cooling intelligent control system according to claim 7 is characterized in that: The PID operating parameters of the cooling water system include cooling water flow, cooling water pressure, cooling water temperature, and cooling operation time.

9. A cooling intelligent control method applied to the vacuum high temperature furnace cooling intelligent control system according to any one of claims 1 to 8, characterized in that: The following steps are included: The temperature detection module detects the water supply temperature of the cooling water system in real time, and the flow monitoring module detects the return water flow of the cooling water system in real time; The cooling control module monitors the supply water temperature and return water flow of the cooling water system in real time and analyzes the changing trends; When the water supply temperature is detected to be beyond the set operating temperature range, the cooling control module controls the cooling water system to adjust the PID operating parameters to control the cooling water temperature to recover and remain within the normal operating temperature range; When the return water flow rate is detected to exceed the set working flow rate range, the cooling control module controls the cooling water return system to adjust the PID operating parameters to control the cooling water flow rate and temperature to remain within the normal working range; When an abnormal trend in the return water flow rate is detected, the cooling control module determines the operating status and issues a fault warning.

10. The vacuum high temperature furnace cooling intelligent control method according to claim 9 is characterized in that: The cooling control module stores and analyzes historical and real-time temperature detection signals and flow monitoring signals, and analyzes and optimizes cooling strategies for different working conditions.

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