Heat dissipation detection method and system for coal-fired power plant equipment

Abstract

The invention discloses a heat dissipation detection method and system for coal-fired power plant equipment, and relates to the technical field of motor heat dissipation detection, and the method comprises the steps: obtaining real-time data of a motor operation state through a multi-sensing device, and comparing the data with a preset reference value; adjusting the heat dissipation mode of the motor based on the comparison result of the real-time data and the reference value; real-time data are recorded and stored through remote control, and the running state of the motor is monitored and adjusted in real time. According to the heat dissipation detection method for the coal-fired power plant equipment, the temperature, the load and the power supply condition of the motor are monitored in real time through the central control unit, when the temperature reaches the first-level early warning value, the rotating speed of the heat dissipation fan is adjusted, precise heat dissipation is achieved, when the temperature exceeds the second-level early warning value, an alarm signal is sent out, automatic shutdown is achieved, false alarms and faults are reduced, and the working efficiency is improved. Therefore, the stability and the safety of data transmission are ensured, the response speed of the system is improved, and better effects are achieved in the aspects of the stability, the response speed and the safety.

Description

Technical Field

[0001] The invention relates to the technical field of motor heat dissipation detection, and in particular to a method for detecting heat dissipation of equipment in a coal-fired power plant. Background Art

[0002] In recent years, with the widespread application of coal-fired power plants around the world, the operating reliability and efficiency of motors as key equipment in power plants have received more and more attention. Under high-load operating conditions, motors will generate a lot of heat. How to effectively dissipate the heat from the motor is a key issue to ensure the long-term safe operation of the motor. Traditional motor heat dissipation methods mostly rely on a simple combination of temperature sensors and cooling fans. When the temperature reaches the set threshold, the cooling fan starts to cool down. However, this traditional heat dissipation detection system has certain limitations in terms of real-time performance, accuracy and flexibility. For example, the monitoring of the motor operating status in the existing technology is usually limited to the collection and feedback of temperature parameters, and other important parameters such as load, current, and voltage cannot be comprehensively considered, which leads to the passivity and singleness of the heat dissipation solution. In addition, the fault diagnosis capability is relatively limited. Many existing systems are difficult to identify potential fault hazards in a timely manner, which further affects the working efficiency and safety of the motor.

[0003] Existing heat dissipation control systems often show inadequacies in the face of complex industrial application scenarios due to their relatively simple structure and limited functions. First, traditional heat dissipation systems are difficult to adjust and adapt in real time when facing different working environments and load changes, which may result in the motor being unable to obtain timely and effective heat dissipation when running at high loads, thereby causing overheating failures. Secondly, the existing system has a low level of automation and intelligence, and is unable to autonomously adjust the heat dissipation strategy according to different working conditions. Manual intervention is often required, which increases the cost and complexity of operation and maintenance. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: the existing heat dissipation detection method has the problem of insufficient heat dissipation causing motor failure, unstable remote control and data acquisition, and how to optimize accurate heat dissipation control and fault warning.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a method for detecting heat dissipation of equipment in a coal-fired power plant, comprising acquiring real-time data of the operating status of a motor through a multi-sensor device, and comparing the data with a preset reference value; adjusting the heat dissipation mode of the motor based on the comparison result between the real-time data and the reference value; recording and storing the real-time data through remote control, and monitoring and adjusting the operating status of the motor in real time.

[0007] As a preferred solution of the method for detecting heat dissipation of coal-fired power plant equipment described in the present invention, the real-time data of the motor operation status is obtained, including real-time detection of the temperature status, load status and power supply status of the motor through a motor heat dissipation detection unit, and the first data processing unit in the motor heat dissipation detection unit is electrically connected to the first signal transceiver unit, the motor load detection unit, the motor temperature detection unit, the motor power supply detection unit, the motor temperature storage unit and the motor temperature comparison unit respectively.

[0008] As a preferred solution of the heat dissipation detection method for coal-fired power plant equipment described in the present invention, the motor load detection unit includes real-time detection of the load condition of the motor and sending the detection data to the first data processing unit for processing and comparison; the motor temperature detection unit detects the temperature of the motor in real time and transmits the temperature detection result to the first data processing unit for processing and analysis; the motor power supply detection unit detects the current and voltage stability of the motor in real time.

[0009] As a preferred solution of the coal-fired power plant equipment heat dissipation detection method described in the present invention, the motor heat dissipation adjustment method includes setting a single variable function to adjust the speed of the cooling fan under different temperature states as front feedback. If the measured actual temperature exceeds the set first-level safety value range, the cooling fan frequency is increased or decreased as back feedback. If the adjustment cannot control the equipment temperature and exceeds the set second-level safety value range, an alarm signal is issued and the equipment is stopped.

[0010] As a preferred solution of the method for detecting heat dissipation of coal-fired power plant equipment described in the present invention, the recording and storage of real-time data through remote control includes a central control unit connected to a remote control terminal through a wireless signal, the remote control terminal remotely operates and controls the central processing unit, and the central control unit is respectively connected to a motor fault detection unit, a motor heat dissipation detection unit, a motor status control unit and an information storage unit, and various data processing information, fault detection information, heat dissipation information and motor status information are stored through the information storage unit.

[0011] As a preferred solution of the method for detecting heat dissipation of coal-fired power plant equipment described in the present invention, the real-time monitoring and adjustment of the motor operating status includes real-time detection of the motor speed and noise, setting alarm values ​​for the speed and noise, and reading the speed and noise data at fixed intervals. If the speed and noise increments exceed the set thresholds within a unit time, it is determined that the equipment has a fault trend, and the motor real-time alarm unit receives and processes the instructions of the central processing unit, and issues an alarm message based on the processing results of the instructions.

[0012] As a preferred solution of the heat dissipation detection method for coal-fired power plant equipment described in the present invention, the real-time monitoring and adjustment of the motor operating status also includes a fault warning light in the motor heat dissipation detection unit. The fault warning light corresponds to the variable frequency cooling fan one by one, and is arranged next to the variable frequency cooling fan. It is electrically connected to the programmable PLC controller of the central control unit and emits light when receiving a notification signal. When the PLC controller of the central control unit receives a fault signal, it sends a control signal to the intermediate relays of the two heat dissipation components closest to the faulty variable frequency cooling fan. The intermediate relay runs at high speed when receiving the control signal, thereby accelerating the heat dissipation speed of the variable frequency cooling fan.

[0013] Another object of the present invention is to provide a coal-fired power plant equipment heat dissipation detection system, which can obtain the operating status data of the motor in real time through multiple sensor devices via a data comparison module, and compare and analyze whether the current operating status of the motor is within a safe and stable range, thereby solving the current problem of insufficient accuracy and inability to reflect the full range of the motor's operating status.

[0014] As a preferred solution of the heat dissipation detection system for coal-fired power plant equipment described in the present invention, it includes: a data comparison module, a heat dissipation adjustment module, and a monitoring and adjustment module; the data comparison module obtains real-time data of the motor operation status through a multi-sensor device, and compares the data with a preset reference value; the heat dissipation adjustment module is used to adjust the motor heat dissipation method based on the comparison result of the real-time data and the reference value; the monitoring and adjustment module is used to record and store real-time data through remote control, and to monitor and adjust the motor operation status in real time.

[0015] A computer device includes a memory and a processor, wherein the memory stores a computer program, and is characterized in that the processor executes the computer program to implement a step of a method for detecting heat dissipation of coal-fired power plant equipment.

[0016] A computer-readable storage medium having a computer program stored thereon, characterized in that when the computer program is executed by a processor, the steps of a method for detecting heat dissipation of equipment in a coal-fired power plant are implemented.

[0017] Beneficial effects of the present invention: The heat dissipation detection method for coal-fired power plant equipment provided by the present invention monitors the temperature, load and power supply of the motor in real time through the central control unit. When the temperature reaches the first-level warning value, the speed of the cooling fan is adjusted to achieve precise heat dissipation. When the temperature exceeds the second-level warning value, an alarm signal is issued and the machine is automatically shut down, effectively avoiding equipment damage caused by high temperature. In addition, the multi-level fault alarm mechanism enables the equipment to respond quickly under abnormal conditions, reducing the probability of false alarms and failures. The central control unit is connected to the remote control terminal through a wireless signal to achieve remote monitoring and control of the equipment. Through data encryption and specific communication protocols, the stability and security of data transmission are ensured, and the response speed of the system is improved. By comparing the temperature and motor load data, it is determined whether the frequency of the cooling fan needs to be adjusted to adapt to changes in different seasons or working conditions. This real-time data storage and analysis capability enables the equipment status to be fully tracked and generate historical records to help subsequent equipment maintenance and performance optimization. The present invention achieves better results in terms of stability, response speed and security. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 An overall flow chart of a method for detecting heat dissipation of equipment in a coal-fired power plant provided in the first embodiment of the present invention.

[0020] Figure 2 This is an overall module diagram of a heat dissipation detection system for coal-fired power plant equipment provided in the third embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0022] Example 1

[0023] Reference Figure 1 , as an embodiment of the present invention, provides a method for detecting heat dissipation of equipment in a coal-fired power plant, comprising:

[0024] S1: Obtain real-time data of the motor operating status through a multi-sensor device and compare the data with a preset reference value.

[0025] Furthermore, obtaining real-time data of the motor operating status includes real-time detection of the temperature status, load status and power supply status of the motor through a motor heat dissipation detection unit.

[0026] It should be noted that the first data processing unit in the motor heat dissipation detection unit is electrically connected to the first signal transceiver unit, the motor load detection unit, the motor temperature detection unit, the motor power supply detection unit, the motor temperature storage unit and the motor temperature comparison unit respectively.

[0027] Furthermore, the motor load detection unit includes real-time detection of the load condition of the motor and sending the detection data to the first data processing unit for processing and comparison.

[0028] It should be noted that the motor temperature detection unit detects the temperature of the motor in real time and transmits the temperature detection result to the first data processing unit for processing and analysis, and the motor power supply detection unit detects the current and voltage stability when the motor is powered in real time.

[0029] S2: Adjust the motor cooling method based on the comparison results between real-time data and reference values.

[0030] Furthermore, adjusting the heat dissipation method of the motor includes setting a single variable function to adjust the speed of the cooling fan under different temperature conditions as a forward feedback.

[0031] It should be noted that if the actual measured temperature exceeds the set first-level safety value range, the cooling fan frequency will be increased or decreased and used as post-feedback. If the adjustment cannot control the equipment temperature and exceeds the set second-level safety value range, an alarm signal will be issued and the equipment will be stopped.

[0032] Furthermore, recording and storing real-time data through remote control includes connecting the central control unit to the remote control terminal through a wireless signal.

[0033] It should be noted that the remote control terminal remotely operates and controls the central processing unit, and the central control unit is respectively connected to the motor fault detection unit, the motor heat dissipation detection unit, the motor status control unit and the information storage unit, and various data processing information, fault detection information, heat dissipation information and motor status information are stored through the information storage unit.

[0034] S3: Record and store real-time data through remote control, and monitor and adjust the motor operating status in real time.

[0035] Furthermore, real-time monitoring and adjustment of the motor operating status includes real-time detection of the motor speed and noise.

[0036] It should be noted that alarm values ​​are set for speed and noise, and the speed and noise data are read at fixed intervals. If the speed and noise increments within a unit time exceed the set thresholds, the equipment is judged to have a fault trend, and the motor real-time alarm unit receives and processes instructions from the central processing unit, and issues an alarm message based on the processing results of the instructions.

[0037] Furthermore, real-time monitoring and adjustment of the motor operating status also includes a fault indicator light in the motor heat dissipation detection unit.

[0038] It should be noted that the fault warning light corresponds one-to-one to the variable frequency cooling fan, and is arranged next to the variable frequency cooling fan. It is electrically connected to the programmable PLC controller of the central control unit and emits light when receiving a notification signal. When the PLC controller of the central control unit receives a fault signal, it sends a control signal to the intermediate relays of the two cooling components closest to the faulty variable frequency cooling fan. When receiving the control signal, the intermediate relay runs at high speed to speed up the heat dissipation speed of the variable frequency cooling fan.

[0039] Example 2

[0040] An embodiment of the present invention provides a method for detecting heat dissipation of equipment in a coal-fired power plant. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0041] An experiment is designed to compare the heat dissipation performance and failure rate of the prior art system and the system of the present invention. The experimental scenario is the temperature change, heat dissipation time, energy consumption and failure rate of the motor when it is running under different loads. The experimental preparation includes two test objects, the system adopted in the prior art, and the system based on the present invention. The two systems are respectively installed on motors of the same power. The temperature, load and energy consumption of the motor are monitored by sensors, and the time of each motor heat dissipation and the probability of failure are recorded. The experiment is divided into five stages, and each stage is set with 80%, 85%, 90%, 95% and 100% motor load. The heat dissipation of the prior art system depends on With traditional temperature sensors and fan control, the fan starts when the temperature exceeds a threshold, and it is not possible to flexibly adjust the heat dissipation strategy according to the real-time operating status. The system of the present invention can flexibly adjust the heat dissipation fan and refrigeration device in real time based on multiple parameters of the motor (temperature, load, power supply, etc.). The heat dissipation time required for the motor to reach a stable state, the energy consumption during the heat dissipation process, and the failure rate are tested in each stage. The influence of ambient temperature is taken into account in the experimental design and set to a normal temperature of 25°C. The authenticity of the experiment is ensured by recording random error data in the experiment. Each system is tested three times under each load, and the average value is taken to obtain the final data.

[0042] As shown in Table 1, under the same load conditions, the motor temperature of the system of the present invention is significantly lower than that of the prior art system. Taking 100% load as an example, the temperature of the prior art system reaches 87°C, while the temperature of the system of the present invention is only 72°C. The system of the present invention can monitor the load and power supply status of the motor in real time, and flexibly adjust the heat dissipation method according to the actual situation, rather than relying on a single temperature monitoring. In terms of heat dissipation time, under the highest load condition, the prior art system takes 35 minutes to complete the heat dissipation, while the system of the present invention only takes 16 minutes. The system of the present invention can quickly start the refrigeration module according to the motor state and dynamically adjust the speed of the cooling fan to achieve efficient heat dissipation control. In contrast, the cooling fan of the prior art system starts lagging and the adjustment is single, resulting in low heat dissipation efficiency. In terms of energy consumption, the performance of the system of the present invention is more energy-saving. Under the same load conditions, the energy consumption of the prior art system gradually increases from 50kWh to 60kWh, while the system of the present invention only increases to 49kWh. The system of the present invention can avoid unnecessary long-term operation of the fan and excessive use of refrigeration equipment through flexible heat dissipation strategies, thereby reducing energy consumption while ensuring heat dissipation effect. As the load increases, the failure rate of the prior art system increases from 10% to 18%, which indicates that the prior art system is difficult to cope with the continuous heat dissipation pressure under high load, while the failure rate of the system of the present invention increases from 2% to 6% under the same conditions. The system of the present invention can analyze the operating status of the motor through remote monitoring and data storage, identify and handle potential hidden faults in advance, and significantly reduce the occurrence of faults.

[0043] Table 1 Experimental data table

[0044] temperature load Cooling time Energy consumption Failure rate Prior art 75℃ 80％ 15min 50kWh 10％ Prior art 78℃ 85％ 20min 52kWh 12％ Prior art 82℃ 90％ 25min 55kWh 14％ Prior art 85℃ 95％ 30min 58kWh 15％ Prior art 87℃ 100％ 35min 60kWh 18％ The present invention 60℃ 80％ 10min 45kWh 2％ The present invention 63℃ 85％ 12min 46kWh 3％ The present invention 68℃ 90％ 14min 47kWh 4％ The present invention 70℃ 95％ 15min 48kWh 5％ The present invention 72℃ 100％ 16min 49kWh 6％

[0045] Example 3

[0046] Reference Figure 2 , which is an embodiment of the present invention, provides a heat dissipation detection system for coal-fired power plant equipment, including: a data comparison module, a heat dissipation adjustment module, and a monitoring and adjustment module.

[0047] The data comparison module obtains the real-time data of the motor's operating status through a multi-sensor device, and compares the data with a preset reference value; the heat dissipation adjustment module is used to adjust the motor's heat dissipation method based on the comparison result of the real-time data and the reference value; the monitoring and adjustment module is used to record and store the real-time data through remote control, and to monitor and adjust the motor's operating status in real time.

[0048] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0049] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0050] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0051] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc. It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limited. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for detecting heat dissipation of equipment in a coal-fired power plant, characterized in that: include: Acquire real-time data of the motor's operating status through a multi-sensor device and compare the data with a preset reference value; Adjust the motor cooling method based on the comparison between real-time data and reference values; Real-time data can be recorded and stored through remote control, and the motor operating status can be monitored and adjusted in real time.

2. The method for detecting heat dissipation of coal-fired power plant equipment according to claim 1, characterized in that: The real-time data of the motor operation status is obtained, including real-time detection of the temperature status, load status and power supply status of the motor through a motor heat dissipation detection unit, wherein the first data processing unit in the motor heat dissipation detection unit is electrically connected to the first signal transceiver unit, the motor load detection unit, the motor temperature detection unit, the motor power supply detection unit, the motor temperature storage unit and the motor temperature comparison unit, respectively.

3. The method for detecting heat dissipation of coal-fired power plant equipment according to claim 2, characterized in that: The motor load detection unit includes real-time detection of the motor load condition and sending the detection data to the first data processing unit for processing and comparison; the motor temperature detection unit detects the temperature of the motor in real time and transmits the temperature detection result to the first data processing unit for processing and analysis; the motor power supply detection unit performs real-time detection of the current and voltage stability when the motor is powered.

4. The method for detecting heat dissipation of coal-fired power plant equipment according to claim 3, characterized in that: The motor heat dissipation adjustment method includes setting a single variable function to adjust the speed of the cooling fan under different temperature conditions as front feedback. If the measured actual temperature exceeds the set first-level safety value range, the cooling fan frequency is increased or decreased as back feedback. If the adjustment cannot control the device temperature and exceeds the set second-level safety value range, an alarm signal is issued and the device is stopped.

5. The method for detecting heat dissipation of coal-fired power plant equipment according to claim 4, characterized in that: The recording and storage of real-time data through remote control includes a central control unit connected to a remote control terminal through a wireless signal, the remote control terminal remotely operates and controls the central processing unit, the central control unit is respectively connected to a motor fault detection unit, a motor heat dissipation detection unit, a motor state control unit and an information storage unit, and various data processing information, fault detection information, heat dissipation information and motor state information are stored through the information storage unit.

6. The method for detecting heat dissipation of coal-fired power plant equipment according to claim 5, characterized in that: The real-time monitoring and adjustment of the motor operating status includes real-time detection of the motor's speed and noise, setting alarm values ​​for the speed and noise, and reading the speed and noise data at fixed intervals. If the speed and noise increments within a unit time exceed the set thresholds, it is determined that the equipment has a fault trend, and the motor real-time alarm unit receives and processes instructions from the central processing unit, and issues an alarm message based on the processing results of the instructions.

7. The method for detecting heat dissipation of coal-fired power plant equipment according to claim 6, characterized in that: The real-time monitoring and adjustment of the motor operating status also includes a fault warning light in the motor heat dissipation detection unit. The fault warning light corresponds to the variable frequency cooling fan one by one, is arranged next to the variable frequency cooling fan, and is electrically connected to the programmable PLC controller of the central control unit. When a notification signal is received, the PLC controller of the central control unit emits a light. When receiving a fault signal, the PLC controller of the central control unit sends a control signal to the intermediate relays of the two heat dissipation components closest to the faulty variable frequency cooling fan. When receiving the control signal, the intermediate relay runs at high speed to speed up the heat dissipation speed of the variable frequency cooling fan.

8. A system using the method for detecting heat dissipation of coal-fired power plant equipment according to any one of claims 1 to 7, characterized in that: Including data comparison module, heat dissipation adjustment module, monitoring and adjustment module; The data comparison module obtains real-time data of the motor operating status through a multi-sensor device and compares the data with a preset reference value; The heat dissipation adjustment module is used to adjust the heat dissipation mode of the motor based on the comparison result between the real-time data and the reference value; The monitoring and adjustment module is used to record and store real-time data through remote control, and to monitor and adjust the motor running status in real time.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method for detecting heat dissipation of coal-fired power plant equipment according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for detecting heat dissipation of equipment in a coal-fired power plant according to any one of claims 1 to 7 are implemented.

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