Emergency accident operation prompting system of 9FB gas-steam combined cycle unit

Abstract

The invention provides an emergency accident operation prompting system of a 9FB gas-steam combined cycle unit. The emergency accident operation prompting system for the 9FB gas-steam combined cycle unit comprises an emergency accident operation prompting system and a control system, the data monitoring module is included in the emergency accident operation prompting system, the output end of the data monitoring module is connected with the input end of the data comparison module, and the data comparison module is in bidirectional connection with the fault emergency module. According to the emergency accident operation prompting system for the 9FB gas-steam combined cycle unit, a watch keeper can be automatically prompted to carry out accident handling according to parameter characteristics, and meanwhile, whether parameters reach the fault emergency shutdown triggering condition or not can be automatically judged, and the emergency shutdown operation can be automatically executed; therefore, the accident handling response time of the watchkeeper is greatly shortened, the correctness and safety of emergency shutdown operation of the accident are ensured, and the risk of misjudgment and misoperation of personnel is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of emergency accident processing of combined cycle units, and in particular to an emergency accident operation prompt system for a 9FB gas-steam combined cycle unit. Background Art

[0002] The gas-steam combined cycle is a combined cycle that uses gas as a high-temperature working fluid, steam as a low-temperature working fluid, and the exhaust gas of the gas turbine as the heating source for the steam turbine unit cycle. The coal-fired gas-steam combined cycle has become the most promising power generation technology because it can significantly improve the thermal efficiency of thermal power plants and solve pollution problems.

[0003] With the continuous development of my country's economy and power system, power load and peak-to-valley difference are increasing. The grid-connected operation of new power sources such as wind power has alleviated the contradiction between power supply and demand to a certain extent. However, this has put forward higher requirements for the safe and stable operation of the power grid. For this reason, the role of gas turbine units in peak and frequency regulation in the power grid has become increasingly important. The AGC instructions of the power grid often fluctuate greatly or start and stop peak regulation according to the dispatching instructions of the power grid, which brings new challenges to the safe operation of the units.

[0004] When an emergency occurs in the unit, the operator needs to determine whether emergency shutdown is required based on the characteristics of the accident and perform operations according to the accident handling operation card. On the one hand, this wastes precious time for accident handling, and on the other hand, improper operation may cause the accident to expand.

[0005] Therefore, it is necessary to provide a 9FB gas-steam combined cycle unit emergency accident operation prompt system to solve the above technical problems. Summary of the invention

[0006] The present invention provides an emergency accident operation prompt system for a FB gas-steam combined cycle unit, which solves the problem that manual judgment and processing when a combined cycle unit fails wastes precious time for accident processing and improper operation may cause the accident to expand.

[0007] In order to solve the above technical problems, the present invention provides an emergency operation prompt system for a FB gas-steam combined cycle unit, comprising: an emergency operation prompt system;

[0008] A data monitoring module, wherein the data monitoring module is included in the emergency operation prompt system, wherein the output end of the data monitoring module is connected to the input end of the data comparison module, the data comparison module is bidirectionally connected to the fault emergency module, the output end of the data comparison module is connected to the input end of the data processing module, and the output end of the data processing module is connected to the input end of the control module;

[0009] An early warning module, wherein the input end of the early warning module is connected to the output end of the control module, the output end of the early warning module is connected to the input end of the prompt processing module, the output end of the prompt processing module is connected to the input end of the result feedback module, the output end of the result feedback module is connected to the input end of the control module, the output end of the result feedback module is connected to the input end of the reset module, the output end of the early warning module is connected to the input end of the emergency fault shutdown prompt module, and the output end of the emergency fault shutdown prompt module is connected to the input end of the result feedback module;

[0010] When the parameters compared by the data comparison module reach the alarm, the operator on duty can be reminded to check the relevant systems and prompt the processing operation. If the adjustment is invalid and the parameters exceed the limit, the operator on duty can be reminded to shut down the system for faults. The system can also perform automatic emergency shutdown operations. The reference parameters of the gas turbine fault shutdown conditions, steam turbine fault shutdown conditions and emergency vacuum breaking conditions are entered into the fault emergency module in the system. The real-time power generation power consumption is calculated according to the real-time electricity and heat loads, and the gas consumption correction coefficient is fitted according to the changes in electricity and heat loads to achieve rapid calculation of the load with three variable changes, and accurately and quickly ensure the gas-electricity balance. Since the correction coefficient is greatly affected by the calorific value of natural gas, the correction coefficient is fitted with the real-time gas consumption. The real-time gas consumption corresponds to the real-time natural gas calorific value, and the error is small. When the unit load fluctuates greatly, this situation is most common. When the provincial dispatching starts to call the load or reduce the load, the gas consumption increases or decreases. The software needs to be based on the real-time unit load and natural gas and heat load.

[0011] Preferably, the output end of the data processing module and the input end of the storage module are connected, and the emergency operation prompt system further includes a communication module and a power supply module;

[0012] The storage module can store the data processed by the data processing module for later retrieval.

[0013] Preferably, the control module comprises a display unit, a control unit and an operating unit;

[0014] The control module is a device that prompts manual operation.

[0015] Preferably, the control module is a control device, further comprising: a mounting plate, the front of the mounting plate is provided with mounting holes near the four corners, the front of the mounting plate is fixedly connected with an adjustment head, and the bottom of the mounting plate is provided with a limit plate with a plurality of line clips;

[0016] The mounting holes are convenient for bolts to pass through and fix the mounting plate to the corresponding wall. Holes are provided at both ends of the bottom of the adjusting head for easy connection with the mounting buckles.

[0017] Preferably, the front side of the adjusting head is rotatably connected with a mounting buckle, and the front side of the mounting buckle is fixedly connected with a fixing plate;

[0018] The mounting buckle can drive the fixing plate to adjust the front angle of the head, and it can also be fixed after the adjustment is completed.

[0019] Preferably, buckles are fixedly connected to both ends of the fixing plate, and a clamping block is provided on one side adjacent to the two buckles, and a support plate is fixedly connected between the two clamping blocks;

[0020] The support plate connects the two card blocks.

[0021] Preferably, a protective cover is fixedly connected to the front of the two card blocks, a control device is arranged inside the protective cover, a shell with a vent hole is installed on the back of the control device, and a connection panel is installed on the bottom of the shell;

[0022] There is an opening on the back of the protective cover for the shell to pass through, and the connection panel can facilitate the connection of external devices to the control device through lines.

[0023] Preferably, the top of the protective sleeve is fixedly connected to a fixing plate near both sides, and the top of the fixing plate is fixedly connected to a hanging ring;

[0024] The hanging loop can be round or square.

[0025] Preferably, the outer surfaces of the hanging rings are each provided with a hook, and a shoulder strap is installed between two of the hooks;

[0026] The shoulder strap is convenient for carrying the control device.

[0027] Compared with the related art, the 9FB gas-steam combined cycle unit emergency operation prompt system provided by the present invention has the following beneficial effects:

[0028] The present invention provides a 9FB gas-steam combined cycle unit emergency accident operation prompt system. In order to improve the efficiency of emergency accident handling of the combined cycle unit, reference parameters of the gas turbine fault shutdown condition, the steam turbine fault shutdown condition and the emergency vacuum breaking condition are first entered into the fault emergency module in the system, so that the data comparison module can retrieve data from the fault emergency module and compare it with the abnormal data monitored in real time. Then, the working state of the combined cycle unit is monitored by the data monitoring module. When the data monitoring module monitors that there is data abnormality, the data will be compared through the data comparison module. The compared data is graded and processed by the data processing module, and then transmitted to the control module, which controls the early warning module to issue an early warning. The system can automatically prompt the on-duty personnel to handle the accident according to the parameter characteristics, and can automatically judge whether the parameters have reached the fault emergency shutdown condition and automatically execute the accident shutdown operation, so that the on-duty personnel's accident handling reaction time is greatly shortened, and the correctness and safety of the accident emergency shutdown operation are ensured, which greatly reduces the risk of personnel misjudgment and misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of a preferred embodiment of the 9FB gas-steam combined cycle unit emergency operation prompt system provided by the present invention;

[0030] Figure 2 A schematic diagram of an early warning module is provided for the present invention;

[0031] Figure 3 A schematic diagram of a control module is provided for the present invention;

[0032] Figure 4 A structural schematic diagram of a mounting plate is provided for the present invention;

[0033] Figure 5 A structural schematic diagram of a mounting buckle is provided for the present invention;

[0034] Figure 6 A structural schematic diagram of a housing is provided for the present invention;

[0035] Figure 7 A structural schematic diagram of a line card is provided for the present invention.

[0036] Numbers in the figure: 1. Mounting plate, 2. Mounting hole, 3. Protective cover, 4. Control device, 5. Fixed plate, 6. Hanging ring, 7. Hook, 8. Shoulder strap, 9. Buckle, 10. Shell, 11. Support plate, 12. Mounting buckle, 13. Adjustment head, 14. Fixed plate, 15. Block, 16. Ventilation hole, 17. Connection panel, 18. Limit plate, 19. Wire clip. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0038] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 ,in, Figure 1 A schematic diagram of a preferred embodiment of the 9FB gas-steam combined cycle unit emergency operation prompt system provided by the present invention; Figure 2 A schematic diagram of an early warning module is provided for the present invention; Figure 3 A schematic diagram of a control module is provided for the present invention; Figure 4 A structural schematic diagram of a mounting plate is provided for the present invention; Figure 5 A structural schematic diagram of a mounting buckle is provided for the present invention; Figure 6 A structural schematic diagram of a housing is provided for the present invention; Figure 7 The present invention provides a schematic diagram of the structure of the line card. 9FB gas-steam combined cycle unit emergency operation prompt system includes: emergency operation prompt system;

[0039] A data monitoring module, wherein the data monitoring module is included in the emergency operation prompt system, wherein the output end of the data monitoring module is connected to the input end of the data comparison module, the data comparison module is bidirectionally connected to the fault emergency module, the output end of the data comparison module is connected to the input end of the data processing module, and the output end of the data processing module is connected to the input end of the control module;

[0040] An early warning module, wherein the input end of the early warning module is connected to the output end of the control module, the output end of the early warning module is connected to the input end of the prompt processing module, the output end of the prompt processing module is connected to the input end of the result feedback module, the output end of the result feedback module is connected to the input end of the control module, the output end of the result feedback module is connected to the input end of the reset module, the output end of the early warning module is connected to the input end of the emergency fault shutdown prompt module, and the output end of the emergency fault shutdown prompt module is connected to the input end of the result feedback module;

[0041] When the parameters compared by the data comparison module reach the alarm, the on-duty personnel can be reminded to check the relevant systems and prompt the processing operation. If the adjustment is invalid and the parameters exceed the limit, the on-duty personnel can be reminded to perform fault shutdown. The system can also have the operation of automatic emergency shutdown. The reference parameters of the gas turbine fault shutdown conditions, steam turbine fault shutdown conditions and emergency vacuum breaking conditions are entered into the fault emergency module in the system. The real-time power generation power consumption is calculated according to the real-time power and heat loads. The gas consumption correction coefficient is fitted according to the changes in power and heat loads to achieve rapid calculation of the load with three variables and accurately and quickly ensure the balance of gas and electricity. Since the correction coefficient is greatly affected by the calorific value of natural gas, the real-time gas consumption is used to fit the correction coefficient. The real-time gas consumption corresponds to the real-time natural gas calorific value with a small error. When the unit load fluctuates greatly, this situation is most common. When the provincial dispatching begins to call the load or reduce the load, the gas consumption increases or decreases. The software needs to add upper and lower load limits based on the real-time unit load and natural gas and heat load, the maximum output of the unit and the minimum output of heating are maintained to ensure that the gas volume is used up, and the expected power load is calculated.

[0042] The output end of the data processing module and the input end connector of the storage module, the emergency operation prompt system further includes a communication module and a power supply module;

[0043] The storage module can store the data processed by the data processing module for later retrieval, the communication module provides wired or wireless signals, and the power supply module provides power supply.

[0044] The control module includes a display unit, a control unit and an operation unit;

[0045] The control module is a device that prompts manual operation and handles emergency accidents through manual operation.

[0046] The control module is a control device 4, and further includes: a mounting plate 1, the front of the mounting plate 1 is provided with mounting holes 2 near the four corners, the front of the mounting plate 1 is fixedly connected with an adjustment head 13, and the bottom of the mounting plate 1 is provided with a limit plate 18 with a plurality of line clips 19;

[0047] The mounting hole 2 is convenient for bolts to pass through to fix the mounting plate 1 on the corresponding wall surface, and holes are provided at both ends of the bottom of the adjusting head 13 to facilitate connection with the mounting buckle 12.

[0048] The front side of the adjusting head 13 is rotatably connected to a mounting buckle 12, and the front side of the mounting buckle 12 is fixedly connected to a fixing plate 14;

[0049] The mounting buckle 12 can drive the fixing plate 14 to adjust the front angle of the adjusting head 13 , and can also fix it after the adjustment is completed. The mounting buckle 12 is provided with a fixing bolt.

[0050] Both ends of the fixing plate 14 are fixedly connected with buckles 9, and adjacent sides of the two buckles 9 are provided with a clamping block 15, and a support plate 11 is fixedly connected between the two clamping blocks 15;

[0051] The support plate 11 connects the two card blocks 15. The connection between the buckle 9 and the card block 15 is referenced Figure 5 .

[0052] The front sides of the two blocks 15 are fixedly connected with a protective cover 3, a control device 4 is arranged inside the protective cover 3, a housing 10 with a vent hole 16 is installed on the back side of the control device 4, and a connection panel 17 is installed on the bottom of the housing 10;

[0053] The back of the protective cover 3 has an opening for the housing 10 to pass through, and the connection panel 17 can facilitate the connection of external devices to the control device 4 through lines. Batteries and circuit boards are installed inside the housing 10.

[0054] The top of the protective sleeve 3 is fixedly connected to a fixing plate 5 near both sides, and the top of the fixing plate 5 is fixedly connected to a hanging ring 6;

[0055] The fixing plate 5 and the protective sleeve 3 are integrated, and the hanging ring 6 can be round or square.

[0056] The outer surfaces of the hanging rings 6 are each provided with a hook 7, and a shoulder strap 8 is installed between two of the hooks 7;

[0057] The shoulder strap 8 is convenient for carrying the control device 4, and the length of the shoulder strap 8 can be adjusted.

[0058] The working principle of the 9FB gas-steam combined cycle unit emergency operation prompt system provided by the present invention is as follows:

[0059] First, the reference parameters of the shutdown conditions for gas turbine faults, steam turbine faults and emergency vacuum breaking conditions are entered into the fault emergency module in the system, so that the data comparison module can retrieve data from the fault emergency module and compare it with the abnormal data monitored in real time. Then, the working status of the combined cycle unit is monitored by the data monitoring module. When the data monitoring module detects data abnormalities, the data comparison module will be used to compare the data. The compared data will be graded and processed by the data processing module, and then transmitted to the control module, which will control the early warning module for early warning. If it is a common fault, the early warning module will display the processing method and operation steps through the prompt processing module to prompt the staff to handle the operation. After the processing is completed, the result feedback will be processed through the result feedback module. If it is solved, the reset operation will be performed through the reset module. If it is not solved, the result will be fed back to the control module. Then, the control module will use the early warning module to shut down the combined cycle unit through the processing structure and method through the prompt emergency shutdown module. Then, the processing structure will be fed back through the result feedback module. If the processing is completed, the reset module will reset the equipment to allow it to operate normally.

[0060] In order to facilitate the staff to carry the control device 4, the control device 4 is installed between the buckles 9 whose angles can be adjusted on the front side of the mounting plate 1 through the block 15 on the back of the protective cover 3. When not in use, the control device 4 only needs to be removed from between the buckles 9, and then hung on the chest of the staff through the shoulder strap 8. After arriving at the corresponding position, it is only necessary to observe the operation of the equipment while operating the control device to deal with emergency accidents. If no accident occurs, the control device 4 is placed on the wall at the corresponding position for the convenience of the staff to watch. The angle can be adjusted according to needs, which is convenient for staff of different heights to use. The flexibility of the control device 4 is increased through this structure, so that when a fault alarm occurs in the combined cycle unit, the staff can quickly arrive at the scene while operating to deal with the accident, which is convenient for better understanding of the actual situation and is conducive to improving the efficiency of accident handling.

[0061] Compared with the related art, the 9FB gas-steam combined cycle unit emergency operation prompt system provided by the present invention has the following beneficial effects:

[0062] In order to improve the efficiency of emergency accident handling of combined cycle units, the reference parameters of gas turbine fault shutdown conditions, steam turbine fault shutdown conditions and emergency vacuum breaking conditions are first entered into the fault emergency module in the system, so that the data comparison module can retrieve data from the fault emergency module and compare it with the abnormal data monitored in real time. Then, the working status of the combined cycle unit is monitored by the data monitoring module. When the data monitoring module detects data abnormalities, the data will be compared through the data comparison module. The compared data is graded and processed by the data processing module, and then transmitted to the control module, which controls the early warning module for early warning. The system can automatically prompt the on-duty personnel to handle the accident according to the parameter characteristics, and can automatically judge whether the parameters have reached the conditions for triggering the fault emergency shutdown and automatically execute the accident shutdown operation, which greatly shortens the on-duty personnel's accident handling reaction time, ensures the correctness and safety of the accident emergency shutdown operation, and greatly reduces the risk of personnel misjudgment and misoperation.

[0063] In order to facilitate the staff to carry the control device 4, the control device 4 is installed between the buckles 9 whose angles can be adjusted on the front side of the mounting plate 1 through the block 15 on the back of the protective cover 3. This structure increases the flexibility of the control device 4, so that when a fault occurs in the combined cycle unit, the staff can quickly arrive at the scene while operating to handle the accident, which is convenient for better understanding of the actual situation and conducive to improving the efficiency of accident handling.

[0064] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. 9FB gas-steam combined cycle unit emergency operation prompt system, characterized by: include: Emergency operation prompt system; A data monitoring module, wherein the data monitoring module is included in the emergency operation prompt system, wherein the output end of the data monitoring module is connected to the input end of the data comparison module, the data comparison module is bidirectionally connected to the fault emergency module, the output end of the data comparison module is connected to the input end of the data processing module, and the output end of the data processing module is connected to the input end of the control module; An early warning module, wherein the input end of the early warning module is connected to the output end of the control module, the output end of the early warning module is connected to the input end of the prompt processing module, the output end of the prompt processing module is connected to the input end of the result feedback module, the output end of the result feedback module is connected to the input end of the control module, the output end of the result feedback module is connected to the input end of the reset module, the output end of the early warning module is connected to the input end of the emergency fault shutdown prompt module, and the output end of the emergency fault shutdown prompt module is connected to the input end of the result feedback module.

2. The 9FB gas-steam combined cycle unit emergency operation prompt system according to claim 1 is characterized in that: The output end of the data processing module and the input end of the storage module are connected, and the emergency operation prompt system also includes a communication module and a power supply module.

3. The 9FB gas-steam combined cycle unit emergency operation prompt system according to claim 1 is characterized in that: The control module includes a display unit, a control unit and an operating unit.

4. According to the 9FB gas-steam combined cycle unit emergency operation prompt system of claim 1, the control module is a control device, characterized in that: Also includes: The mounting plate has mounting holes on its front near the four corners, an adjusting head is fixedly connected to the front of the mounting plate, and a limiting plate with a plurality of line clips is installed at the bottom of the mounting plate.

5. The 9FB gas-steam combined cycle unit emergency operation prompt system according to claim 4 is characterized in that: The front side of the adjusting head is rotatably connected with a mounting buckle, and the front side of the mounting buckle is fixedly connected with a fixing plate.

6. The 9FB gas-steam combined cycle unit emergency operation prompt system according to claim 5 is characterized in that: Buckles are fixedly connected to both ends of the fixing plate, and a clamping block is arranged on one side adjacent to the two buckles, and a supporting plate is fixedly connected between the two clamping blocks.

7. The 9FB gas-steam combined cycle unit emergency operation prompt system according to claim 6 is characterized in that: The front sides of the two card blocks are fixedly connected with protective covers, a control device is arranged inside the protective covers, a shell with air holes is installed on the back side of the control device, and a connection panel is installed on the bottom of the shell.

8. The 9FB gas-steam combined cycle unit emergency operation prompt system according to claim 7 is characterized in that: The top of the protective sleeve is fixedly connected to a fixing plate at positions close to both sides, and the top of the fixing plate is fixedly connected to a hanging ring.

9. The 9FB gas-steam combined cycle unit emergency operation prompt system according to claim 8 is characterized in that: The outer surfaces of the hanging rings are each provided with a hook, and a shoulder strap is installed between two of the hooks.

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