CN112460574B - Liquid level control system and control method for 1000MW supercritical boiler water storage tank - Google Patents
Liquid level control system and control method for 1000MW supercritical boiler water storage tank Download PDFInfo
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- CN112460574B CN112460574B CN202011311441.5A CN202011311441A CN112460574B CN 112460574 B CN112460574 B CN 112460574B CN 202011311441 A CN202011311441 A CN 202011311441A CN 112460574 B CN112460574 B CN 112460574B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
- F22B37/46—Applications, arrangements, or dispositions of alarm or automatic safety devices responsive to low or high water level, e.g. for checking, suppressing, extinguishing combustion in boilers
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Abstract
The invention discloses a liquid level control system and a liquid level control method for a 1000MW supercritical boiler water storage tank, which relate to the technical field of liquid level control and comprise a water tank device, a display terminal and an industrial personal computer, wherein the water tank device, the display terminal and the industrial personal computer are all in bidirectional connection; the liquid level sensor output and liquid level information processing system input electric connection, both way junction between liquid level information processing system and the liquid level information database, liquid level information processing system output and liquid level controller input electric connection. The control system not only locks the interval value through the locking unit so as to close the infusion valve and effectively adjust the interval value of the liquid level inside the water tank, but also controls the valves of the liquid level values in different areas through the liquid level value single control unit inside the electronic liquid level value output master control unit and closes or opens the corresponding valves, thereby enabling the water tank to achieve a better liquid level effect.
Description
Technical Field
The invention relates to the technical field of liquid level control, in particular to a liquid level control system of a 1000MW supercritical boiler water storage tank and a control method thereof.
Background
The supercritical boiler refers to a boiler with the pressure of working media in the boiler being above a critical point, and with the development of the supercritical boiler, the energy conservation and emission reduction are better than before, the environment is protected, the working media in the boiler are all water, and the critical pressure of the water is 22.115MPa 374.15 ℃; at the pressure and the temperature, the latent heat of vaporization of water and steam is equal to zero, a two-phase region does not exist, namely, the water is changed into steam continuously and is carried out in a single-phase mode, namely, the critical point of the water is called, the boiler is called as a subcritical boiler when the pressure of the working medium in the boiler is lower than the pressure, the boiler is called as a supercritical boiler when the pressure of the working medium in the boiler is higher than the pressure, the boiler is called as an ultra-supercritical boiler when the pressure of the working medium in the boiler is higher than the pressure, and the boiler is called as an ultra-supercritical boiler when the pressure of the working medium in the boiler is higher than 26MPa in China, and is called as a Gao Xiaochao critical boiler.
Patent publication No. CN106642067B provides a control system and a control method for a boiler liquid level, and the method comprises the steps of comparing a real-time signal sent by a liquid level transmitter of a boiler with a preset signal to determine an operation error of the boiler; the operation error is subjected to digital-to-analog conversion for multiple times through the fuzzy controller to obtain an output quantity, the output quantity is used for controlling the opening of the regulating valve to enable the liquid level of the boiler to be within a preset range, and the fuzzy controller is adopted to carry out fuzzy conversion for multiple times on a real-time signal which is sent and detected by the transmitter, so that the operation error in the boiler is adjusted in real time, the adaptability of the boiler control system to a dynamic environment is improved, and the control effect of the boiler system is increased.
The control system and the existing liquid level control system have the following defects in the using process:
1. the upper limit value and the lower limit value of the liquid level can not be confirmed and identified, so that the liquid level value in the water tank reaches the optimal value;
2. when the liquid level value in the water tank changes, the designated valve cannot be quickly and effectively closed, and the water tank is prevented from bursting and other situations are avoided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a 1000MW supercritical boiler water storage tank liquid level control system and a control method thereof, which solve the problems that the upper limit value and the lower limit value of the liquid level cannot be confirmed and identified, so that the liquid level value in the water tank reaches the optimal value, and when the liquid level value in the water tank changes, a specified valve cannot be quickly and effectively closed, and the water tank bursts and other situations are avoided.
In order to realize the purpose, the invention is realized by the following technical scheme: a liquid level control system of a 1000MW supercritical boiler water storage tank comprises water tank equipment, a display terminal and an industrial personal computer, wherein the water tank equipment, the display terminal and the industrial personal computer are all in bidirectional connection;
the inside level sensor that is included of water tank equipment, level sensor output and liquid level information processing system input electric connection, both way junction between liquid level information processing system and the liquid level information database, liquid level information processing system output and liquid level controller input electric connection, the liquid level controller output respectively with threshold value module, converter, upper limit locking module and lower limit locking module's input electric connection, threshold value module output and alarm device input electric connection, converter output and three-phase helping hand pump input electric connection, three-phase helping hand pump output and AD conversion module input electric connection, AD conversion module output and liquid level data output module input electric connection.
Preferably, the liquid level information processing system is inside including liquid level setting device, value-added digital PID regulator, intelligent instrument controller, current converter and liquid level transmitter, the unit is set for including the interval value to threshold value module inside, interval value sets for unit output and counting unit input electric connection, counting unit output and locking unit input electric connection, locking unit output and feedback unit input electric connection, interval value sets for the unit and is set for the processing by outside staff to interval value.
Preferably, the liquid level controller comprises a liquid level upper limit control unit, a liquid level lower limit control unit and a liquid level interval value self-locking unit, the alarm device comprises a device opening data receiving unit, the device opening data receiving unit output end is electrically connected with the automatic control unit input end, and the automatic control unit output end is electrically connected with the buzzer and the police information sending unit input end respectively.
Preferably, the industrial computer is internally provided with a liquid level data receiving module, a liquid level data receiving module output end and a D/A conversion module input end are electrically connected, a D/A conversion module output end and a liquid level interval value arrangement module input end are electrically connected, a liquid level interval value arrangement module output end and a liquid level interval value integration module input end are electrically connected, a liquid level interval value integration module output end and other values are extracted to form a module input end, other values are extracted to form a module and are matched with the module in a bidirectional connection mode, other values are extracted to form a module output end and a liquid level value calculation module input end are electrically connected, other values are matched with the module in a bidirectional connection mode and are matched with the big database in a bidirectional connection mode, and a liquid level value calculation module output end is respectively electrically connected with a liquid level value output module and an electronic liquid level value output master control module input end.
Preferably, the liquid level interval value arrangement module is internally provided with an upper limit value arrangement unit and a lower limit value arrangement unit, the upper limit value arrangement unit and the lower limit value arrangement unit are respectively provided with N, the electronic liquid level value output master control module is internally provided with an electronic liquid level value output master control unit, the output end of the electronic liquid level value output master control unit is electrically connected with the input end of a liquid level value single control unit, and the liquid level value single control unit is provided with N.
Preferably, the level value single control unit is electrically connected with an external single control valve, and the upper limit value extraction unit and the lower limit value extraction unit are arranged in the upper limit value arrangement unit and the lower limit value arrangement unit.
Preferably, the output end of the level value output module is electrically connected with the input end of the display terminal, the electronic level value output master control module is electrically connected with an external master control valve, other value matching units are arranged inside the other value matching modules, and the other value matching units are connected with the big database in a two-way mode.
Preferably, the police service information sending unit is wirelessly connected with an external mobile terminal, and the input end of the equipment starting data receiving unit is electrically connected with the output end of the feedback unit.
Preferably, the liquid level control system of the 1000MW supercritical boiler water storage tank comprises the following steps:
the method comprises the following steps: a liquid level sensor in the water tank equipment collects and processes liquid level information in the water storage tank and transmits the information to the inside of a liquid level information processing system, a liquid level setter is arranged in the liquid level information processing system to set and process a liquid level value, a value-added digital PID regulator regulates and processes the liquid level value, an intelligent instrument controller intelligently controls the liquid level value, a current converter converts a current value, and a liquid level transmitter transmits the liquid level value;
step two: the device comprises a liquid level controller, a liquid level upper limit control unit, a liquid level lower limit control unit, a threshold module, a counting unit, a feedback unit, an equipment starting data receiving unit, an automatic control unit, a buzzer and an alarm information sending unit, wherein the liquid level controller receives a value in a liquid level information processing system, the liquid level upper limit control unit controls an upper limit value in an upper limit locking module, the liquid level lower limit control unit controls a lower limit value in a lower limit locking module, an external person sets an interval value in an interval value setting unit in the threshold module in advance, after setting, the counting unit counts and processes a exceeding part of value, after exceeding a certain value, the interval value is locked by the locking unit, so that a liquid delivery valve is closed, the liquid level interval value in a water tank is effectively regulated, the locking information is sent by the feedback unit, the feedback unit sends the information to alarm equipment, the equipment starting data receiving unit receives the information, the automatic control unit starts the buzzer and the alarm information sending unit, the alarm information sending unit sends the information to an external mobile terminal, so that the external person can obtain the information in time, and process the condition in the water tank;
step three: the frequency converter receives data information and transmits the information to the interior of the three-phase booster pump, the three-phase booster pump is started, a water pump switch is turned on, a proper amount of water source is injected into the water tank, the information is converted through the A/D conversion module, and the information is transmitted to the interior of the industrial personal computer through the liquid level data output module;
step four: the liquid level data receiving module in the industrial personal computer receives the liquid level data, and then the information is converted through the D/A conversion module, the upper limit value arrangement unit and the lower limit value arrangement unit in the liquid level interval value arrangement module sequentially arrange the upper limit value and the lower limit value of the liquid level interval, after the data are sequentially arranged, the liquid level interval value integration module integrates different corresponding liquid level values, so that different values are sequentially arranged and then are integrated, the problem that the data in the system are excessively disordered is effectively avoided, and the computer terminal can rapidly recognize the information;
step five: other values in the data are extracted by the other value extraction module, the other values are matched with the big data in the big database, after the matching is completed, different difference values are calculated by the liquid level value calculation module, the calculated data are conveyed to the inside of the electronic liquid level value output master control module and the liquid level value output module, the liquid level value is conveyed to the inside of the display terminal by the liquid level value output module, external personnel can conveniently check and process the difference values, the liquid level value single control unit in the electronic liquid level value output master control unit controls valves of liquid level values in different areas, and the corresponding valves are closed or opened, so that the water tank achieves a better liquid level effect.
Preferably, the upper limit locking module and the lower limit locking module in the second step are both arranged in the appointed electric control valve, and the frequency converter in the third step has a better frequency conversion function.
Advantageous effects
The invention provides a liquid level control system and a liquid level control method for a 1000MW supercritical boiler water storage tank. Compared with the prior art, the method has the following beneficial effects:
1. the 1000MW supercritical boiler water storage tank liquid level control system and the control method thereof receive the numerical value inside the liquid level information processing system through the inside of the liquid level controller, the liquid level upper limit value control unit controls the upper limit value inside the upper limit locking module, the liquid level lower limit value control unit controls the lower limit value inside the lower limit locking module, external personnel set the interval value of the interval value setting unit inside the threshold module in advance, after the setting, the counting unit counts the value of the exceeding part, after the processing, after the exceeding certain value, the interval value is locked through the locking unit, thereby closing the liquid conveying valve and effectively adjusting the liquid level interval value inside the water tank.
2. The 1000MW supercritical boiler water storage tank liquid level control system and the control method thereof are characterized in that other value extraction modules extract other values in data, then other value matching modules match with big data in a big database, after matching is completed, different difference values are calculated and processed through a liquid level value calculation module, the calculated data are conveyed to the inside of an electronic liquid level value output master control module and a liquid level value output module, the liquid level value output module conveys the liquid level value to the inside of a display terminal, external personnel can conveniently check and process the liquid level value, a liquid level value single control unit in the electronic liquid level value output master control unit controls valves of liquid level values in different areas, corresponding valves are closed or opened, and therefore the water tank achieves a better liquid level effect.
3. This 1000MW supercritical boiler water storage tank liquid level control system and control method thereof, the inside liquid level data receiving module of industrial computer receives liquid level data, again through DA conversion module with information conversion processing, the inside upper limit value of interval value arrangement module of liquid level arranges the unit and the lower limit value arranges the unit and arranges the processing in proper order to the interval upper and lower limit value of liquid level, data arrange in proper order the completion back, the interval value integration module of rethread liquid level integrates the processing to different corresponding liquid level values, thereby arrange the back in proper order to different values, integrate the processing to it again, effectively avoided in the system data too chaotic, be convenient for computer terminal to carry out quick discernment to information.
4. According to the 1000MW supercritical boiler water storage tank liquid level control system and the control method thereof, locking information is conveyed through the feedback unit, the feedback unit conveys the information into the alarm device, the device starting data receiving unit receives the information, the automatic control unit is started after the information is received, the automatic control unit starts the buzzer and the police service information sending unit, and the police service information sending unit sends the information into the external mobile terminal, so that external personnel can obtain the information in time and process the condition inside the water tank.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic diagram of the framework of the present invention;
FIG. 3 is a schematic view of the internal frame of the water tank apparatus of the present invention;
FIG. 4 is a schematic diagram of a frame of a fluid level information processing system according to the present invention;
FIG. 5 is a schematic diagram of a framework of a threshold module of the present invention;
FIG. 6 is a schematic diagram of the framework of the liquid level controller of the present invention;
FIG. 7 is a schematic diagram of the framework of the alarm device of the present invention;
FIG. 8 is a schematic diagram of the framework of an industrial personal computer according to the present invention;
FIG. 9 is a schematic diagram of a framework of a liquid level interval value arrangement module according to the present invention;
FIG. 10 is a schematic diagram of a frame principle of the electronic level value output master control module according to the present invention.
In the figure: 1. a water tank device; 11. a liquid level sensor; 12. a liquid level information processing system; 121. a liquid level setter; 122. a value-added digital PID regulator; 123. an intelligent meter controller; 124. a current converter; 125. a liquid level transmitter; 13. a liquid level information database; 14. an upper limit locking module; 15. a liquid level controller; 151. a liquid level upper limit control unit; 152. a liquid level lower limit control unit; 153. a liquid level interval value self-locking unit; 16. a threshold module; 161. an interval value setting unit; 162. a counting unit; 163. a locking unit; 164. a feedback unit; 17. an alarm device; 171. the equipment starts a data receiving unit; 172. a self-control unit; 173. a buzzer; 174. a police information transmitting unit; 18. a frequency converter; 19. a three-phase booster pump; 110. an A/D conversion module; 111. a liquid level data output module; 112. a lower limit locking module; 2. a display terminal; 3. an industrial personal computer; 31. a liquid level data receiving module; 32. a D/A conversion module; 33. a liquid level interval value arrangement module; 331. an upper limit value arranging unit; 332. a lower limit value arranging unit; 34. a liquid level interval value integration module; 35. a other value extraction module; 36. other values match the module; 37. a large database; 38. a liquid level value calculation module; 39. the electronic liquid level value outputs a master control module; 391. the electronic level value is output to a master control unit; 392. a liquid level value single control unit; 310. and a liquid level value output module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a liquid level control system of a 1000MW supercritical boiler water storage tank comprises a water tank device 1, a display terminal 2 and an industrial personal computer 3, wherein the water tank device 1, the display terminal 2 and the industrial personal computer 3 are all in bidirectional connection;
inside including level sensor 11 of water tank equipment 1, level sensor 11 output and the 12 input electric connection of liquid level information processing system, both way junction between liquid level information processing system 12 and the liquid level information database 13, 12 output of liquid level information processing system and the 15 input electric connection of liquid level controller, 15 output of liquid level controller respectively with threshold value module 16, converter 18, the input electric connection of upper limit locking module 14 and lower limit locking module 112, 16 output of threshold value module and the 17 input electric connection of alarm equipment, 18 output of converter and 19 input electric connection of three-phase booster pump, 19 output of three-phase booster pump and 110 input electric connection of AD conversion module, AD conversion module 110 output and 111 input electric connection of liquid level data output module.
Referring to fig. 4-5, the liquid level information processing system 12 includes a liquid level setter 121, a value-added digital PID regulator 122, an intelligent instrument controller 123, a current converter 124 and a liquid level transmitter 125, the threshold module 16 includes an interval value setting unit 161, an output end of the interval value setting unit 161 is electrically connected to an input end of a counting unit 162, an output end of the counting unit 162 is electrically connected to an input end of a locking unit 163, an output end of the locking unit 163 is electrically connected to an input end of a feedback unit 164, the interval value setting unit 161 sets an interval value by an external worker, and after the interval value is set, the alarm device 17 can whistle in time to achieve a better early warning effect.
Referring to fig. 6-7, the liquid level controller 15 includes a liquid level upper limit control unit 151, a liquid level lower limit control unit 152, and a liquid level interval value self-locking unit 153, the alarm device 17 includes a device opening data receiving unit 171, an output end of the device opening data receiving unit 171 is electrically connected to an input end of the automatic control unit 172, and an output end of the automatic control unit 172 is electrically connected to the buzzer 173 and an input end of the police information sending unit 174, respectively;
the police information sending unit 174 is wirelessly connected to an external mobile terminal, the input end of the device-on data receiving unit 171 is electrically connected to the output end of the feedback unit 164, and the information in the feedback unit 164 can be transmitted to the inside of the device-on data receiving unit 171.
Referring to fig. 8, the industrial personal computer 3 includes a liquid level data receiving module 31 therein, an output end of the liquid level data receiving module 31 is electrically connected to an input end of a D/a conversion module 32, an output end of the D/a conversion module 32 is electrically connected to an input end of a liquid level interval value arrangement module 33, an output end of the liquid level interval value arrangement module 33 is electrically connected to an input end of a liquid level interval value integration module 34, an output end of the liquid level interval value integration module 34 is electrically connected to an input end of another value extraction module 35, the another value extraction module 35 is bidirectionally connected to another value matching module 36, an output end of the another value extraction module 35 is electrically connected to an input end of a liquid level value calculation module 38, the another value matching module 36 is bidirectionally connected to a big database 37, and an output end of the liquid level value calculation module 38 is electrically connected to an input end of a liquid level value output module 310 and an input end of an electronic liquid level value output master control module 39, respectively;
the output end of the liquid level value output module 310 is electrically connected with the input end of the display terminal 2, the electronic liquid level value output master control module 39 is electrically connected with an external master control valve, other value matching pairs are arranged inside the module 36, other value matching pairs are connected with the big database 37 in a bidirectional mode, and other value matching pairs can be matched with the data inside the big database 37 for processing.
Referring to fig. 8-10, the liquid level interval value arrangement module 33 includes an upper limit value arrangement unit 331 and a lower limit value arrangement unit 332, the upper limit value arrangement unit 331 and the lower limit value arrangement unit 332 are N, the electronic level value output master control module 39 includes an electronic level value output master control unit 391, an output end of the electronic level value output master control unit 391 is electrically connected to an input end of the level value single control unit 392, and the level value single control unit 392 is N;
the liquid level value single control unit 392 is electrically connected with an external single control valve, and the upper limit value arrangement unit 331 and the lower limit value arrangement unit 332 are internally provided with upper and lower limit value extraction units.
A liquid level control method for the liquid level of a 1000MW supercritical boiler water storage tank comprises the following steps:
the method comprises the following steps: the liquid level sensor 11 in the water tank device 1 collects and processes liquid level information in the water storage tank and transmits the information to the liquid level information processing system 12, the liquid level setting device 121 is arranged in the liquid level information processing system 12 to set and process a liquid level value, the value-added digital PID regulator 122 regulates and processes the liquid level value, the intelligent instrument controller 123 intelligently controls the liquid level value, the current converter 124 converts a current value, and the liquid level transmitter 125 transmits the liquid level value;
step two: the liquid level controller 15 receives the value inside the liquid level information processing system 12, the liquid level upper limit control unit 151 controls the upper limit value inside the upper limit locking module 14, the liquid level lower limit control unit 152 controls the lower limit value inside the lower limit locking module 112, an external person sets the interval value of the interval value setting unit 161 inside the threshold module 16 in advance, after the setting, the counting unit 162 counts the exceeding part of the value, after the exceeding of a certain value, the interval value is locked by the locking unit 163, so that the liquid delivery valve is closed, the liquid level interval value inside the water tank is effectively adjusted, the locking information is delivered by the feedback unit 164, the feedback unit 164 delivers the information into the alarm device 17, the device opening data receiving unit 171 receives the information, after the information is received, the automatic control unit 172 is started, the automatic control unit 172 opens the buzzer 173 and the police service information delivery unit 174, the police service information delivery unit 174 delivers the information into the external mobile terminal, so that the external person can obtain the information in time, and handle the condition inside the water tank;
step three: the frequency converter 18 receives data information and transmits the information to the interior of the three-phase booster pump 19, the three-phase booster pump 19 is started, a water pump switch is turned on, a proper amount of water source is injected into the water tank, the information is converted through the A/D conversion module 110, and the information is transmitted to the interior of the industrial personal computer 3 through the liquid level data output module 111;
step four: the liquid level data receiving module 31 in the industrial personal computer 3 receives the liquid level data, then the information is converted through the D/A conversion module 32, the upper limit value arrangement unit 331 and the lower limit value arrangement unit 332 in the liquid level interval value arrangement module 33 sequentially arrange the upper limit value and the lower limit value of the liquid level interval, after the data are sequentially arranged, the liquid level interval value integration module 34 integrates different corresponding liquid level values, so that the different values are sequentially arranged and then integrated, the problem that the data in the system are excessively disordered is effectively avoided, and the computer terminal can rapidly recognize the information;
step five: the other value extraction module 35 extracts other values in the data, the other value matching module 36 matches with the big data in the big database 37, after the matching is completed, the different difference values are calculated and processed by the level value calculation module 38, the calculated data are transmitted to the electronic level value output master control module 39 and the level value output module 310, the level value is transmitted to the display terminal 2 by the level value output module 310, external personnel can conveniently check and process the difference values, the level value single control unit 392 in the electronic level value output master control unit 391 controls valves of level values in different areas, and the corresponding valves are closed or opened, so that the water tank achieves a better liquid level effect.
Furthermore, in the second step, the upper limit locking module 14 and the lower limit locking module 112 are both disposed inside the designated electric control valve, and the third step intermediate frequency converter 18 has a better frequency conversion function.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a 1000MW supercritical boiler water storage tank liquid level control system, includes water tank equipment (1), display terminal (2) and industrial computer (3), its characterized in that: the water tank equipment (1), the display terminal (2) and the industrial personal computer (3) are connected in a bidirectional manner;
the water tank device (1) is internally provided with a liquid level sensor (11), the output end of the liquid level sensor (11) is electrically connected with the input end of a liquid level information processing system (12), the liquid level information processing system (12) is bidirectionally connected with a liquid level information database (13), the output end of the liquid level information processing system (12) is electrically connected with the input end of a liquid level controller (15), the output end of the liquid level controller (15) is respectively electrically connected with the input ends of a threshold module (16), a frequency converter (18), an upper limit locking module (14) and a lower limit locking module (112), the output end of the threshold module (16) is electrically connected with the input end of an alarm device (17), the output end of the frequency converter (18) is electrically connected with the input end of a three-phase booster pump (19), the output end of the three-phase booster pump (19) is electrically connected with the input end of an A/D conversion module (110), and the output end of the A/D conversion module (110) is electrically connected with the input end of a liquid level data output module (111);
the liquid level information processing system (12) comprises a liquid level setter (121), a value-added digital PID regulator (122), an intelligent instrument controller (123), a current converter (124) and a liquid level transmitter (125) inside, the threshold module (16) comprises an interval value setting unit (161), the output end of the interval value setting unit (161) is electrically connected with the input end of a counting unit (162), the output end of the counting unit (162) is electrically connected with the input end of a locking unit (163), the output end of the locking unit (163) is electrically connected with the input end of a feedback unit (164), and the interval value setting unit (161) is set and processed by external workers;
the liquid level controller (15) internally comprises a liquid level upper limit control unit (151), a liquid level lower limit control unit (152) and a liquid level interval value self-locking unit (153), the alarm device (17) internally comprises a device opening data receiving unit (171), the output end of the device opening data receiving unit (171) is electrically connected with the input end of an automatic control unit (172), and the output end of the automatic control unit (172) is electrically connected with the input ends of a buzzer (173) and a police service information sending unit (174) respectively;
the industrial personal computer (3) is internally provided with a liquid level data receiving module (31), the output end of the liquid level data receiving module (31) is electrically connected with the input end of a D/A conversion module (32), the output end of the D/A conversion module (32) is electrically connected with the input end of a liquid level interval value arrangement module (33), the output end of the liquid level interval value arrangement module (33) is electrically connected with the input end of a liquid level interval value integration module (34), the output end of the liquid level interval value integration module (34) is electrically connected with the input end of other value extraction modules (35), the other value extraction modules (35) are bidirectionally connected with other value matching modules (36), the output end of the other value extraction modules (35) is electrically connected with the input end of a liquid level value calculation module (38), the other value matching modules (36) are bidirectionally connected with a big database (37), and the output end of the liquid level value calculation module (38) is respectively electrically connected with a liquid level value output module (310) and an input end of an electronic liquid level value output master control module (39);
the liquid level interval value arrangement module (33) comprises an upper limit value arrangement unit (331) and a lower limit value arrangement unit (332) inside, the upper limit value arrangement unit (331) and the lower limit value arrangement unit (332) are both provided with N, the electronic liquid level value output master control module (39) comprises an electronic liquid level value output master control unit (391) inside, the output end of the electronic liquid level value output master control unit (391) is electrically connected with the input end of a liquid level value single control unit (392), the liquid level value single control unit (392) is provided with N, the liquid level value single control unit (392) is electrically connected with an external single control valve, and an upper limit value extraction unit and a lower limit value extraction unit are arranged inside the upper limit value arrangement unit (331) and the lower limit value arrangement unit (332).
2. The 1000MW supercritical boiler water storage tank liquid level control system according to claim 1, characterized by: the electronic level value output module is characterized in that the output end of the level value output module (310) is electrically connected with the input end of the display terminal (2), the electronic level value output master control module (39) is electrically connected with an external master control valve, other value matching pairs are arranged inside the module (36), and other value matching pairs are connected with the unit and the big database (37) in a two-way mode.
3. The 1000MW supercritical boiler water storage tank liquid level control system according to claim 2, characterized by: the police service information sending unit (174) is in wireless connection with an external mobile terminal, and the input end of the equipment starting data receiving unit (171) is electrically connected with the output end of the feedback unit (164).
4. A liquid level control method of a 1000MW supercritical boiler water storage tank liquid level control system according to claim 3, characterized by: the liquid level control method comprises the following steps:
the method comprises the following steps: a liquid level sensor (11) in the water tank device (1) collects and processes liquid level information in a water storage tank and transmits the information to the inside of a liquid level information processing system (12), a liquid level setter (121) is arranged in the liquid level information processing system (12) to set and process a liquid level value, a value-added digital PID regulator (122) regulates and processes the liquid level value, an intelligent instrument controller (123) intelligently controls the liquid level value, a current converter (124) converts a current value, and a liquid level transmitter (125) transmits the liquid level value;
step two: the device comprises a liquid level controller (15), a liquid level upper limit control unit (151), a liquid level lower limit control unit (152), a liquid level lower limit control unit (112), a liquid level upper limit control unit (151), a liquid level lower limit control unit (162), a liquid level lower limit control unit (152), an external person and a liquid level control unit (172), wherein the liquid level controller receives a value inside a liquid level information processing system (12), the liquid level upper limit control unit controls an upper limit value inside an upper limit locking module (14), the liquid level lower limit control unit controls a lower limit value inside a lower limit locking module (112), the external person sets a section value of a section value setting unit (161) inside a threshold module (16) in advance, after the setting, the counting unit (162) counts and processes a exceeding part of the value, after the exceeding part of the value exceeds a certain value, the section value is locked through a locking unit (163), so that a liquid delivery valve is closed, the liquid level section value inside a water tank is effectively adjusted, and locking information is delivered through a feedback unit (164), the feedback unit (164) delivers the information into an alarm device (17), a device opening data receiving unit (171) receives the information, after receiving the information, a self-control unit (172) starts, the self-control unit (172), a buzzer (173) and a police service information sending unit (174) sends the information to the external person to the external information processing system to a terminal for processing system to obtain the external person conveniently;
step three: the frequency converter (18) receives data information and transmits the information to the interior of the three-phase booster pump (19), the three-phase booster pump (19) is started, a water pump switch is turned on, a proper amount of water source is injected into the water tank, the information is converted through the A/D conversion module (110), and the information is transmitted to the interior of the industrial personal computer (3) through the liquid level data output module (111);
step four: the liquid level data is received by a liquid level data receiving module (31) in the industrial personal computer (3), information is converted by a D/A conversion module (32), the upper limit value arranging unit (331) and the lower limit value arranging unit (332) in the liquid level interval value arranging module (33) sequentially arrange the upper limit value and the lower limit value of the liquid level interval, after the data are sequentially arranged, different corresponding liquid level values are integrated by a liquid level interval value integrating module (34), so that the different values are sequentially arranged and integrated, the situation that the data in the system are excessively disordered is effectively avoided, and the information can be rapidly identified by the computer terminal;
step five: the other values in the data are extracted by the other value extraction module (35), the other values are matched with the big data in the big database (37) by the other value matching module (36), after the matching is finished, different difference values are calculated and processed by the liquid level value calculation module (38), the calculated data are transmitted to the electronic liquid level value output master control module (39) and the liquid level value output module (310), the liquid level value is transmitted to the display terminal (2) by the liquid level value output module (310), so that the external personnel can conveniently check and process the difference values, the liquid level value single control unit (392) in the electronic liquid level value output master control unit (391) controls valves of liquid level values in different areas, and the corresponding valves are closed or opened, so that the water tank achieves a better liquid level effect.
5. The control method of the 1000MW supercritical boiler water storage tank liquid level control system according to claim 4, characterized by: and in the second step, the upper limit locking module (14) and the lower limit locking module (112) are both arranged in the appointed electric control valve, and the third step, the intermediate frequency converter (18) has a better frequency conversion function.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391515A (en) * | 2014-12-02 | 2015-03-04 | 佛山市南海北沙制药有限公司 | Methyl alcohol storage tank feed and output control device applied to medicine production |
| CN104658220A (en) * | 2013-11-20 | 2015-05-27 | 程媛 | Water level remote monitoring system |
| CN204631644U (en) * | 2015-06-03 | 2015-09-09 | 西安科技大学 | Coal-mine water-house water level monitor device |
| CN208805734U (en) * | 2018-11-15 | 2019-04-30 | 华北电力大学（保定） | A kind of high water tank control system |
-
2020
- 2020-11-20 CN CN202011311441.5A patent/CN112460574B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658220A (en) * | 2013-11-20 | 2015-05-27 | 程媛 | Water level remote monitoring system |
| CN104391515A (en) * | 2014-12-02 | 2015-03-04 | 佛山市南海北沙制药有限公司 | Methyl alcohol storage tank feed and output control device applied to medicine production |
| CN204631644U (en) * | 2015-06-03 | 2015-09-09 | 西安科技大学 | Coal-mine water-house water level monitor device |
| CN208805734U (en) * | 2018-11-15 | 2019-04-30 | 华北电力大学（保定） | A kind of high water tank control system |
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