Sintering main extraction steam-electric hybrid power system

Abstract

The invention discloses a sintering main extraction steam-electric hybrid power system, and belongs to the technical field of waste heat power generation. Comprising a steam turbine module, a variable speed clutch is arranged on the right side of the steam turbine module, a motor module is arranged on the right side of the variable speed clutch, and a sintering main exhaust fan is arranged on the right side of the motor module. According to the sintering main extraction steam-electric hybrid power system disclosed by the invention, the energy utilization efficiency index of the sintering main extraction steam-electric hybrid power system can be obtained by obtaining the temperature and the flow of a waste heat recovery inlet and outlet and the input power and the output power of a steam turbine and a motor and analyzing and processing the obtained data; therefore, the energy utilization efficiency of the sintering main extraction steam-electric hybrid power system can be judged according to the efficiency index, the larger the efficiency index is, the higher the energy utilization efficiency of the sintering main extraction steam-electric hybrid power system is, and otherwise, the lower the energy utilization efficiency of the sintering main extraction steam-electric hybrid power system is.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat power generation, and in particular to a sintering main extraction steam electric hybrid system. Background Art

[0002] The total energy consumption of the steel industry accounts for more than 12% of the total national energy consumption, second only to the electric power industry. Among them, the energy consumption of the sintering process accounts for about 15% of the total energy consumption of steel enterprises, second only to the iron-making process. The waste heat from the cooling part of the sintered ore is the main part of the waste heat recovery in the sintering process. The recycling of the waste heat and waste energy of sintered ore is of great significance to the energy conservation and emission reduction of steel enterprises. The control system of the existing sintering main extraction steam-electric hybrid system can only perform speed control on the sintering main extraction steam-electric hybrid system, and cannot perform real-time monitoring and analysis on the operating status of the sintering main extraction steam-electric hybrid system. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a sintering main extraction steam-electric hybrid system; it can solve the problem that the control system of the existing sintering main extraction steam-electric hybrid system can only perform speed control on the sintering main extraction steam-electric hybrid system, but cannot perform real-time monitoring and analysis on the operating status of the sintering main extraction steam-electric hybrid system.

[0004] Technical solution: To solve the above technical problems, according to one aspect of the present invention, more specifically, a sintering main exhaust steam-electric hybrid system comprises: a steam turbine module, a speed change clutch is provided on the right side of the steam turbine module, a motor module is provided on the right side of the speed change clutch, and a sintering main exhaust fan is provided on the right side of the motor module.

[0005] Furthermore, the steam turbine module includes: a steam turbine, wherein flow sensors are fixed on both upper and left sides of the steam turbine, temperature sensors are fixed on both lower and left sides of the steam turbine, and a power sensor is fixed on the upper right side of the steam turbine.

[0006] Furthermore, the motor module includes: a motor, the power sensor is fixed on the upper right side of the motor, and a four-quadrant high-voltage inverter is fixed on the lower side of the motor.

[0007] Furthermore, it includes: a data collection unit, a core processing unit, a network transmission unit, a storage management unit, and a display reminder unit;

[0008] Data acquisition unit: used for collecting various data during the operation of the variable speed steam-electric dual-drive control device required by the control system of the variable speed steam-electric dual-drive control device;

[0009] Core processing unit: used to analyze and process various data collected by the data acquisition unit during the operation of the variable speed steam-electric dual-drive control device and various data stored by the storage management unit during the operation of the variable speed steam-electric dual-drive control device, and generate an operation report on the sintering main extraction steam-electric hybrid system according to the results of the analysis and processing;

[0010] Network transmission unit: used to transmit various data collected by the data acquisition unit during the operation of the variable speed steam-electric dual-drive control device to the core processing unit and the storage management unit, and transmit the operation report on the sintering main extraction steam-electric hybrid system generated by the core processing unit through analysis and processing to the storage management unit and the display reminder unit, and transmit the data stored in the storage management unit to the core processing unit;

[0011] Storage management unit: used to store and manage various data collected by the data acquisition unit during the operation of the variable speed steam-electric dual-drive control device and the operation report on the sintering main extraction steam-electric hybrid system generated by the core processing unit through analysis and processing;

[0012] Display reminder unit: used to receive and display the operation report on the sintering main extraction steam electric hybrid system generated by the core processing unit analysis and processing, set the threshold of the report related results, and issue a warning reminder when the report result reaches the set threshold.

[0013] Furthermore, the data acquisition unit includes: an inlet and outlet temperature acquisition module, an inlet and outlet flow acquisition module, a power acquisition module and a time acquisition module;

[0014] Inlet and outlet temperature collection module: used to collect the inlet and outlet temperatures of the waste heat recovery part;

[0015] Import and export flow collection module: used to collect the flow of the import and export of the waste heat recovery part;

[0016] Power acquisition module: used to collect various data about power during the operation of the variable speed steam-electric dual-drive control device required by the control system of the variable speed steam-electric dual-drive control device;

[0017] Time collection module: used to collect various time data during the operation of the variable speed steam-electric dual-drive control device required by the control system of the variable speed steam-electric dual-drive control device.

[0018] Furthermore, the core processing unit includes: a data receiving module, an analysis and processing module, and a report generating module;

[0019] Data receiving module: used for receiving various data collected by the data collection unit during the operation of the variable speed steam-electric dual-drive control device and various data stored by the storage management module during the operation of the variable speed steam-electric dual-drive control device;

[0020] Analysis and processing module: used to analyze and process the data received by the data receiving module;

[0021] Report generation module: used to generate an operation report on the sintering main extraction steam-electric hybrid system according to the analysis and processing results of the analysis and processing module.

[0022] Furthermore, the storage management unit includes: a data acquisition module, a data storage module and a data management module;

[0023] Data acquisition module: used to obtain various data collected by the data acquisition unit during the operation of the variable speed steam-electric dual-drive control device and the operation report on the sintering main extraction steam-electric hybrid system generated by the core processing unit through analysis and processing;

[0024] Data storage module: used to store the data and reports acquired by the data acquisition module;

[0025] Data management module: used to manage the data and reports stored in the data storage module.

[0026] Furthermore, the display reminder unit includes: a threshold setting module, a report receiving module, a report display module and a warning reminder module;

[0027] Threshold setting module: used to set the threshold of the relevant results of the operation report on the sintering main extraction steam electric hybrid system generated by the core processing unit analysis and processing;

[0028] Report receiving module: used for receiving the operation report on the sintering main extraction steam electric hybrid system generated by the core processing unit analysis and processing;

[0029] Report display module: used to display the operation report of the sintering main extraction steam electric hybrid system generated by the core processing unit analysis and processing;

[0030] Warning reminder module: used for issuing warning reminders when the operation report results of the sintering main extraction steam electric hybrid system generated by the core processing unit analysis and processing reach the set threshold.

[0031] Furthermore, when performing analysis and processing, the analysis and processing module can obtain the temperature and flow rate of the waste heat recovery inlet and outlet, as well as the input power and output power of the steam turbine and the motor, and obtain the energy utilization efficiency index of the sintering main extraction steam-electric hybrid system based on the above acquired data analysis and processing:

[0032]

[0033] Therefore, the energy utilization efficiency of the sintering main extraction steam-electric hybrid system can be determined according to the efficiency index. The larger the efficiency index, the greater the energy utilization efficiency of the sintering main extraction steam-electric hybrid system. Conversely, the smaller the energy utilization efficiency of the sintering main extraction steam-electric hybrid system. EI is the energy utilization efficiency index of the sintering main extraction steam-electric hybrid system, RT is i is the temperature at the inlet of each waste heat recovery, RB i is the flow rate at the inlet of each waste heat recovery, CT i is the temperature at the outlet of each waste heat recovery, CB i is the flow rate at the outlet of each waste heat recovery, QNP i is the output power of each steam turbine, DNP i is the output power of the motor each time, QIP i is the input power of the steam turbine each time, DIP i is the input power of the motor each time, and n is the number of operations of the sintering main extraction steam-electric hybrid system.

[0034] Furthermore, when performing analysis and processing, the analysis and processing module can obtain the operating time of the sintering main extraction steam-electric hybrid system each time, the time point of each fault occurrence, the time point of each fault end, the time point of each speed change instruction issuance, and the time point of each speed change start, and comprehensively analyze the above data to obtain the performance index of the sintering main extraction steam-electric hybrid system:

[0035]

[0036] Therefore, the performance of the sintering main extraction steam-electric hybrid system can be judged according to the performance index of the sintering main extraction steam-electric hybrid system. The larger the performance index of the sintering main extraction steam-electric hybrid system, the better the performance of the sintering main extraction steam-electric hybrid system. Conversely, the worse the performance of the sintering main extraction steam-electric hybrid system. Among them, PI is the performance index of the sintering main extraction steam-electric hybrid system, T i is the duration of each run, s is the number of runs, St i is the time point of each failure, Et i is the end time of each fault, Et i+1 -Et i is the time between two consecutive faults, m is the number of faults, Ft i Kt is the time point when each speed change command is issued. i is the time point when each speed change starts, and x is the number of times the speed change command is issued.

[0037] Beneficial effect: A sintering main extraction steam-electric hybrid system disclosed in the present invention can obtain the temperature and flow rate of the waste heat recovery inlet and outlet and the input power and output power of the turbine and the motor, and analyze and process the data obtained above to obtain the energy utilization efficiency index of the sintering main extraction steam-electric hybrid system, so that the energy utilization efficiency of the sintering main extraction steam-electric hybrid system can be determined according to the efficiency index. The larger the efficiency index, the greater the energy utilization efficiency of the sintering main extraction steam-electric hybrid system, and vice versa. At the same time, the performance index of the sintering main extraction steam-electric hybrid system can be obtained by obtaining the operating time of each sintering main extraction steam-electric hybrid system, the time when each fault occurs, the time when each fault ends, the time when each speed change command is issued, and the time when each speed change starts, and comprehensively analyzing the above data. Therefore, the performance of the sintering main extraction steam-electric hybrid system can be judged according to the performance index of the sintering main extraction steam-electric hybrid system. The larger the performance index of the sintering main extraction steam-electric hybrid system, the better the performance of the sintering main extraction steam-electric hybrid system, and vice versa, it means that the performance of the sintering main extraction steam-electric hybrid system is worse. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of the device structure;

[0039] Figure 2 It is a schematic diagram of the system principle. DETAILED DESCRIPTION

[0040] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Example 1

[0042] Firstly, the inlet and outlet temperatures of the waste heat recovery part, the inlet and outlet flows of the waste heat recovery part, various power data required by the control system of the variable speed steam-electric dual-drive control device during operation, and various time data required by the control system of the variable speed steam-electric dual-drive control device during operation are collected through the inlet and outlet temperature collection module, the inlet and outlet flow collection module, the power collection module and the time collection module of the data collection unit, and the data are transmitted to the core processing unit and the storage management unit through the network transmission unit. Among them, the temperature sensor of the temperature collection device is a PT100 temperature sensor, the flow sensor of the flow collection device is a NEMOTO NAP-67A flow sensor, and the power sensor of the power collection device is a Rohde & Schwarz NRP8S (N) power meter sensor.

[0043] Then the data receiving module of the core processing unit receives the data from the data acquisition unit and the storage management unit, and the analysis and processing module analyzes and processes the temperature and flow of the waste heat recovery inlet and outlet, as well as the input power and output power of the steam turbine and the motor to obtain the energy utilization efficiency index of the sintering main extraction steam-electric hybrid system:

[0044]

[0045] Therefore, the energy utilization efficiency of the sintering main extraction steam-electric hybrid system can be determined according to the efficiency index. The larger the efficiency index, the greater the energy utilization efficiency of the sintering main extraction steam-electric hybrid system. Conversely, the smaller the energy utilization efficiency of the sintering main extraction steam-electric hybrid system. EI is the energy utilization efficiency index of the sintering main extraction steam-electric hybrid system, RT is i RB is the temperature at the inlet of each waste heat recovery. i is the flow rate at the inlet of each waste heat recovery, CT i is the temperature at the outlet of each waste heat recovery, CB i is the flow rate at the outlet of each waste heat recovery, QNP i is the output power of each steam turbine, DNP i is the output power of the motor each time, QIP i is the input power of the steam turbine each time, DIP i is the input power of the motor each time, and n is the number of operations of the sintering main extraction steam-electric hybrid system.

[0046] At the same time, the operating time of the sintering main extraction steam-electric hybrid system each time, the time point of each fault occurrence, the time point of each fault end, the time point of each speed change instruction issuance and the time point of each speed change start are analyzed and processed to obtain the performance index of the sintering main extraction steam-electric hybrid system:

[0047]

[0048] Therefore, the performance of the sintering main extraction steam-electric hybrid system can be judged according to the performance index of the sintering main extraction steam-electric hybrid system. The larger the performance index of the sintering main extraction steam-electric hybrid system, the better the performance of the sintering main extraction steam-electric hybrid system. Conversely, the worse the performance of the sintering main extraction steam-electric hybrid system. Among them, PI is the performance index of the sintering main extraction steam-electric hybrid system, T i is the duration of each run, s is the number of runs, St i is the time point of each failure, Et i is the end time of each fault, Et i+1 -Et i is the time between two consecutive faults, m is the number of faults, Ft i Kt is the time point when each speed change command is issued. iis the time point when each speed change starts, and x is the number of times the speed change command is issued.

[0049] And the report generation module generates an operation report on the sintering main extraction steam-electric hybrid system according to the above analysis and processing results, and transmits the generated operation report on the sintering main extraction steam-electric hybrid system to the storage management unit and the display reminder unit.

[0050] The data acquisition module of the storage management unit acquires various data collected by the data acquisition unit during the operation of the variable-speed steam-electric dual-drive control device and the operation report on the sintering main extraction steam-electric hybrid system generated by analysis and processing by the core processing unit. The data storage module and the data management module store and manage the data and reports acquired by the data acquisition module.

[0051] The threshold setting module of the display reminder unit sets the threshold of the relevant results of the operation report on the sintering main extraction steam-electric hybrid system generated by the core processing unit analysis and processing. The report receiving module receives the operation report on the sintering main extraction steam-electric hybrid system generated by the core processing unit analysis and processing, and displays the operation report on the sintering main extraction steam-electric hybrid system generated by the core processing unit analysis and processing through the report display module. At the same time, when the result of the operation report on the sintering main extraction steam-electric hybrid system generated by the core processing unit analysis and processing reaches the set threshold, the warning reminder module will issue a warning reminder.

[0052] Example 2

[0053] In this embodiment, the analysis and processing module of the core processing unit analyzes and processes the temperature and flow rate of the waste heat recovery inlet and outlet, and the input power and output power of the steam turbine and the motor to obtain the energy utilization efficiency index of the sintering main extraction steam electric hybrid system, and can obtain: At this point, the energy utilization efficiency index of the sintering main extraction steam-electric hybrid system can be calculated:

[0054] At this time, the EI value 1.577 obtained by the analysis and processing module is compared with the EI threshold value EI preset by the threshold setting module of the display reminder unit. 阈 For comparison, if EI 阈 ≤1.577, no warning will be given. 阈 >1.577, a warning will be given through the warning reminder module of the display reminder unit to remind the operator to inspect and repair the sintering main extraction steam-electric hybrid system.

[0055] Example 3

[0056] In this embodiment, the analysis and processing module of the core processing unit can obtain the performance index of the sintering main extraction steam electric hybrid system by analyzing and processing the temperature and flow rate of the waste heat recovery inlet and outlet and the input power and output power of the steam turbine and the motor received by the data receiving module. At this time, the performance index of the sintering main extraction steam electric hybrid system can be calculated:

[0057] At this time, the PI value obtained by the analysis and processing module is compared with the PI threshold value PI pre-set by the threshold setting module of the display reminder unit. 阈 For comparison, if PI 阈 ≤1.753, no warning will be given. 阈 >1.753, a warning will be given through the warning reminder module of the display reminder unit to remind the operator to inspect and repair the sintering main extraction steam-electric hybrid system.

[0058] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A sintering main extraction steam electric hybrid system, characterized in that: include: A steam turbine module (1), wherein a speed change clutch (5) is arranged on the right side of the steam turbine module (1), a motor module (6) is arranged on the right side of the speed change clutch (5), and a sintering main exhaust fan (8) is arranged on the right side of the motor module (6).

2. A sintering main extraction steam electric hybrid system according to claim 1, characterized in that: The steam turbine module (1) comprises: a steam turbine (2), wherein flow sensors (3) are fixed on both the upper left and right sides of the steam turbine (2), temperature sensors (4) are fixed on both the lower left and right sides of the steam turbine (2), and a power sensor (10) is fixed on the upper right side of the steam turbine (2).

3. A sintering main extraction steam electric hybrid system according to claim 2, characterized in that: The motor module (6) comprises: a motor (7), the power sensor (10) being fixed on the upper right side of the motor (7), and a four-quadrant high-voltage inverter (9) being fixed below the motor (7).

4. The sintering main extraction steam electric hybrid system according to claim 3 is characterized in that: When the output power of the steam turbine (2) is greater than the power required by the sintering main exhaust fan (8), the motor (7) is used as a generator; when the output power of the steam turbine (2) is less than the power required by the sintering main exhaust fan (8), the motor (7) is used as a motor to compensate for the power required by the sintering main exhaust fan (8).

5. A sintering main extraction steam electric hybrid system according to claim 1, characterized in that: include: Data collection unit, core processing unit, network transmission unit, storage management unit and display reminder unit.

6. The sintering main extraction steam electric hybrid system according to claim 5, characterized in that: The data acquisition unit includes: an inlet and outlet temperature acquisition module, an inlet and outlet flow acquisition module, a power acquisition module and a time acquisition module.

7. The sintering main extraction steam electric hybrid system according to claim 6, characterized in that: The core processing unit includes: a data receiving module, an analysis and processing module and a report generating module.

8. The sintering main extraction steam electric hybrid system according to claim 7, characterized in that: The storage management unit includes: a data acquisition module, a data storage module and a data management module.

9. The sintering main extraction steam electric hybrid system according to claim 8, characterized in that: The display and reminder unit includes: a threshold setting module, a report receiving module, a report display module and a warning reminder module.

10. The sintering main extraction steam electric hybrid system according to claim 8, characterized in that: When performing analysis and processing, the analysis and processing module can obtain the temperature and flow rate of the waste heat recovery inlet and outlet, as well as the input power and output power of the steam turbine and the motor, and obtain the energy utilization efficiency index of the sintering main extraction steam-electric hybrid system based on the above acquired data analysis and processing: Therefore, the energy utilization efficiency of the sintering main extraction steam-electric hybrid system can be determined according to the efficiency index. The larger the efficiency index, the greater the energy utilization efficiency of the sintering main extraction steam-electric hybrid system. Conversely, the smaller the energy utilization efficiency of the sintering main extraction steam-electric hybrid system. EI is the energy utilization efficiency index of the sintering main extraction steam-electric hybrid system, RT is i is the temperature at the inlet of each waste heat recovery, RB i is the flow rate at the inlet of each waste heat recovery, CT i is the temperature at the outlet of each waste heat recovery, CB i is the flow rate at the outlet of each waste heat recovery, QNP i is the output power of each steam turbine, DNP i is the output power of the motor each time, QIP i is the input power of the steam turbine each time, DIP i is the input power of the motor each time, and n is the number of operations of the sintering main extraction steam-electric hybrid system.

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