CN213435054U - Embedded electric precipitation operation optimization system - Google Patents
Embedded electric precipitation operation optimization system Download PDFInfo
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- CN213435054U CN213435054U CN202020960557.0U CN202020960557U CN213435054U CN 213435054 U CN213435054 U CN 213435054U CN 202020960557 U CN202020960557 U CN 202020960557U CN 213435054 U CN213435054 U CN 213435054U
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Abstract
The utility model provides an embedded electric dust removal operation optimization system aiming at the defect that the combustion rate problem of coal in a boiler is not considered in the prior art, which belongs to the technical field of electric dust removal, and comprises an embedded optimization system, an electric dust remover control device and a boiler detection device, wherein the embedded optimization system is respectively in communication connection with the electric dust remover control device and the boiler detection device; the electric dust collector control device comprises a dust emission detection device, a carbon monoxide concentration detection device, a high-voltage direct current power supply control device and a dust removal vibration control device; the embedded optimization system reads detection information from the control system of the electric dust collector and detection information from the boiler detection system, combines real-time operation data of the electric dust collector through operation design indexes, historical operation records and physical characteristics of coal combusted by a boiler, and dynamically controls the output power of a high-voltage direct-current power supply of the electric dust collector in a closed-loop manner through the control system of the electric dust collector.
Description
Technical Field
The utility model belongs to the technical field of the electric precipitation, concretely relates to embedded electric precipitation operation optimizing system.
Background
Electric dust collectors are the main means of dust control, and include dry electric dust collectors, wet electric dust collectors, and the like. The electric dust collector mainly achieves the purpose of collecting dust through high-voltage static electricity generated by a power frequency high-voltage direct-current power supply or a high-frequency high-voltage direct-current power supply. The high-voltage direct-current power supply is main electrical equipment in the electric dust remover and provides energy for the normal work of the electric dust remover. Within a certain range, the output power of the high-voltage direct-current power supply is in direct proportion to the dust removal efficiency of the electric dust remover, namely the higher the output power is, the higher the dust removal efficiency of the electric dust remover is, until the dust removal efficiency of the electric dust remover reaches the maximum value, and then the improvement of the output power of the high-voltage power supply cannot improve the dust removal efficiency of the electric dust remover. The boiler is an important device of a thermal power plant, and the load of the boiler is the power representing the current power generation amount of the power plant. The dust after the boiler burning has got into electrostatic precipitator, and the boiler load is big more, and it discharges out the dust also big more, and electrostatic precipitator's burden is also heavier. The electric dust collector belongs to high-energy-consumption equipment, an electric dust collector operation system is optimized on the premise of not reducing the dust collection efficiency, and the purpose of reducing the energy consumption is achieved, so that the electric dust collector has extremely high economic value and social value, for example, the patent application number is CN201710317109.1, the patent name is the invention patent of the electric dust collection system performance evaluation and operation optimization system, the electric dust collector operation system comprises a state evaluation system, an online simulation system and an operation optimization system, a plurality of key system data of the electric dust collection system are collected, the real-time operation state of the electric dust collection system is accurately mastered, the operation data of the electric dust collection system are analyzed through a data algorithm, and important indexes such as the commissioning rate; through system modeling, a full-flow computer simulation model of the electric precipitation system is established, the model optimization solution is carried out by applying the internal physical laws and performance constraint conditions of the electric precipitation system, dynamic optimization parameters are determined, and the optimal control strategy comprehensively considering the economic performance and the environmental protection performance is obtained.
However, the problem of coal combustion rate of coal in a boiler is not considered in the scheme, complete combustion cannot be realized in the combustion process, the lower the combustion rate is, the more dust is generated, and combustible and explosive objects such as carbon monoxide can be generated, so that explosion can be caused when the concentration of a high-voltage electric field of the electric dust collector reaches a certain requirement.
Disclosure of Invention
The utility model discloses to the drawback of the combustion rate problem of coal among the boiler is not considered among the prior art, provide an embedded electric precipitation operation optimizing system, this utility model real-time supervision boiler's combustion rate and load have increased optimizing system dynamic adjustment electrostatic precipitator high-voltage electric field power output's lead, have improved the timeliness and the degree of accuracy of optimizing system adjustment. And the carbon monoxide concentration detection and protection measures are added, so that the safe operation of the equipment is ensured.
The invention aims to be realized by the following technical scheme: an embedded electric dust collector operation optimization system comprises an embedded optimization system, an electric dust collector control device and a boiler detection device, wherein the embedded optimization system is respectively in communication connection with the electric dust collector control device and the boiler detection device; the electric dust collector control device comprises a dust emission detection device, a carbon monoxide concentration detection device, a high-voltage direct-current power supply control device and a dust removal vibration control device, wherein the dust emission detection device is arranged at the outlet position of the electric dust collector, and the carbon monoxide concentration detection device is arranged in the electric dust collector; the boiler detection system comprises a boiler load detection device and a boiler combustion rate detection device; the embedded optimization system reads detection information from the control device of the electric dust collector and detection information from the boiler detection device, combines real-time operation data of the electric dust collector system through operation design indexes, historical operation records and physical characteristics of coal combusted by a boiler, and dynamically controls the output power of a high-voltage direct-current power supply of the electric dust collector in a closed-loop manner through the control device of the electric dust collector.
In the above scheme, the embedded system is composed of hardware and software, and is a device capable of operating independently. The method is based on computer technology and is suitable for special computer systems with strict requirements on functions, reliability, cost, size and power consumption of application systems.
The control device of the electric dust collector and the boiler detection device transmit detected real-time data to the embedded optimization system for real-time monitoring and calculation, initial set values in the running process and the embedded optimization system are compared and calculated, a calculation instruction is sent to the control device of the electric dust collector, and the output power of the high-voltage direct-current power supply is dynamically adjusted, so that the electric dust collector consumes the lowest energy under the condition that the electric dust collector meets the dust removal requirement set by a user. The incomplete combustion of coal can lead to the production of carbon monoxide, carbon monoxide is flammable and explosive gas, if certain concentration is reached in a high-voltage electric field, if electric sparks occur easily to explode again, a carbon monoxide concentration detection device detects the carbon monoxide concentration in the high-voltage electric field in real time and transmits the carbon monoxide concentration to an embedded optimization system in real time, the embedded optimization system judges whether the carbon monoxide concentration in the high-voltage electric field exceeds a normal value according to an initial value of the carbon monoxide concentration, and if the carbon monoxide concentration exceeds the normal value, the high-voltage electric field stops outputting a high-voltage power supply, so that the safety of equipment is protected.
Preferably, the communication connection comprises an RS485/RS232 communication connection, an MODBUS/TCP communication connection and an OPC communication connection. OPC is an abbreviation of OLE for Process Control, and OPC technology refers to establishing a unified data access specification between an industrial Control device and Control software in order to establish an interface standard for communication between applications of an industrial Control system. The method provides a standard data access mechanism for the field of industrial control, effectively separates hardware and application software, is a set of software data exchange standard interface and procedure which are irrelevant to manufacturers, mainly solves the problem of data exchange between a process control system and a data source thereof, and can provide transparent data access among various applications. The communication connection modes can be freely selected according to actual field requirements and field conditions.
Preferably, the high-voltage direct-current power supply control device controls the power output of a high-voltage power supply in the electric dust collector. Within a certain range, the output power of the high-voltage direct-current power supply is in direct proportion to the dust removal efficiency of the electric dust remover, namely the higher the output power is, the higher the dust removal efficiency of the electric dust remover is, until the dust removal efficiency of the electric dust remover reaches the maximum value, and then the improvement of the output power of the high-voltage power supply cannot improve the dust removal efficiency of the electric dust remover.
Preferably, said dust removal rapping control device controls the operation period and operation duration of the dust removal rapping motor. The electric eliminator used in thermal power plants does not adopt a rapping mode to remove ash. The impact of the rapping period on the dust removal efficiency is whether the falling dust cake can fall into the ash hopper directly during ash removal. The vibrating period is too long, the accumulated dust on the polar plate is too thick, the conductivity of charged dust on the polar plate is reduced, and the dust removal efficiency is reduced; the rapping period is too short, the dust can be dispersed into broken powder and fall down, so that larger secondary dust is caused, namely, the dust deposited on the dust collecting pole of the electric dust collector is taken out of the electric dust collector by the air flow again, and particularly, the secondary dust of a tail-pole electric field can greatly reduce the efficiency of the electric dust collector.
Preferably, the high-voltage direct-current power supply control device and the dust-removing rapping control device work in a matching manner, and when the dust-removing rapping control device controls the dust-removing rapping motor to work, the high-voltage direct-current power supply control device synchronously controls the high-voltage direct-current power supply to reduce the output power. The high voltage dc power supply will form a high voltage electrostatic field between the cathode and anode of the electrostatic precipitator, which causes the ash to be adsorbed on the anode plate. When the ash content is accumulated to a certain thickness, the ash content falls off through the knocking of the rapping motor, thereby achieving the purpose of ash removal. The electric dust removal is carried out through a high-voltage electrostatic electric field, but the existence of the high-voltage electrostatic electric field also hinders the effect of vibration and dust removal, so that the dust is not easy to drop. The electric field force of the high-voltage electrostatic electric field can be reduced by reducing the output of the high-voltage direct-current power supply, so that the ash can be knocked off more easily.
Preferably, the embedded optimization system comprises an embedded computer, and the visualized human-computer interaction system runs on the embedded computer. The man-machine interaction system can facilitate a user to directly set or modify the initial operation parameters of the embedded electric dust removal operation optimization system on the interaction interface and visually see the parameter changes of each device in the operation process. The use of the user and the maintenance of the equipment are convenient.
Preferably, the control device of the electric dust collector is a PLC or a controller with a single chip microcomputer as a core.
Compared with the prior art, the utility model discloses following beneficial effect has: the embedded system is more reliable, the power consumption is lower, and the function expansibility is better; the detection feedback of the boiler combustion rate and the boiler load is increased to calculate the output power of the high-voltage direct-current electric field, and the output power of the high-voltage direct-current power supply is adjusted more accurately and timely; the carbon monoxide concentration in the high-voltage electric field of the electric dust collector is detected, so that the running safety of equipment is ensured; when the dust removal rapping motor operates, the output power of the corresponding high-voltage direct-current power supply is reduced, so that the dust removal effect of the rapping motor can be improved.
Drawings
Fig. 1 is a block diagram of the system structure of the present invention;
fig. 2 is the logic diagram of the electric dust removal control of the utility model.
Detailed Description
The invention will be further described with reference to the embodiments shown in the drawings to which:
example 1
As shown in fig. 1 and 2, an embedded electric dust collector operation optimization system comprises an embedded optimization system, an electric dust collector control device and a boiler detection device, wherein the embedded optimization system is respectively in communication connection with the electric dust collector control device and the boiler detection device; the communication connection comprises RS485/RS232 communication connection, MODBUS/TCP communication connection and OPC communication connection. The electric dust collector control device is a controller which is PLC or takes a single chip microcomputer as a core, the electric dust collector control device comprises a dust emission detection device, a carbon monoxide concentration detection device, a high-voltage direct-current power supply control device and a dust removal rapping control device, the high-voltage direct-current power supply control device controls the power output of a high-voltage power supply in the electric dust collector, and the dust removal rapping control device controls the operation cycle and the operation duration of a dust removal rapping motor. The high-voltage direct-current power supply control device and the dust removal rapping control device work in a matching way, and when the dust removal rapping control device controls the dust removal rapping motor to work, the high-voltage direct-current power supply control device synchronously controls the high-voltage direct-current power supply to reduce the output power. The dust emission detection device is arranged at the outlet of the electric dust collector, and the carbon monoxide concentration detection device is arranged in the electric dust collector; the boiler detection system comprises a boiler load detection device and a boiler combustion rate detection device; the embedded optimization system comprises an embedded computer, and a visual human-computer interaction system runs on the embedded computer. The embedded optimization system reads detection information from the control device of the electric dust collector and detection information from the boiler detection device, combines real-time operation data of the electric dust collector system through operation design indexes, historical operation records and physical characteristics of coal combusted by a boiler, and dynamically controls the output power of a high-voltage direct-current power supply of the electric dust collector in a closed-loop manner through the control device of the electric dust collector.
Before the embedded electric precipitation operation optimization system operates, initial operation parameters need to be set in a visual human-computer interaction system on an embedded computer, and the visual human-computer interaction system is generally a touch screen. The initial operation parameters comprise the type of coal used by the boiler, the ash content of the coal, the upper/lower limit value of the output power of the high-voltage direct-current power supply, the initial value of the output power of the high-voltage direct-current power supply, the planned load of the boiler, the target dust removal efficiency of the electric dust remover, the dust discharge target value of the discharge port of the electric dust remover, and the operation period and the operation duration of a dust removal rapping motor. When the parameters are set, starting the electric dust removal operation optimization system, adjusting the output power of a high-voltage direct-current power supply of the electric dust remover through calculation by the embedded optimization system through real-time boiler load and boiler combustion rate detected by the boiler detection device, discharging air subjected to dust removal treatment at an outlet of the electric dust remover after dust passes through a high-voltage electric field of the electric dust remover, detecting dust discharge values in the air through the dust discharge detection device, transmitting the dust discharge values to the embedded optimization system and comparing and calculating with the initially set dust discharge values, if the dust discharge values are smaller than the set values, maintaining the output power of the high-voltage direct-current power supply unchanged, and if the detected dust discharge values are larger than the set values, sending an instruction to the electric dust remover control device to control the linear increase of the output power of the high-voltage direct-current power supply by, until the detected dust emission value is less than the set value. The dynamic closed-loop control can reduce the operation energy consumption of the electric dust remover as much as possible. During the operation of the electric dust remover, the embedded optimization system detects the concentration of carbon monoxide in a high-voltage electric field of the electric dust remover in real time through the carbon monoxide concentration detection device, and when the concentration of the carbon monoxide exceeds a set value, the electric dust remover stops outputting a high-voltage direct-current power supply to protect the safety of equipment. The dust removal rapping motor executes rapping work through an operation period and an operation time set by the embedded optimization system, the operation period can be a fixed time period or an execution period after specific conditions are met, the specific conditions can be that the boiler load is smaller than a set value or the dust emission value of an electric dust collector is smaller than the set value, the dust removal rapping motor is started, and in order to improve the dust cleaning effect of the dust removal rapping motor, the embedded optimization system can reduce the output power of a high-voltage direct-current power supply through a high-voltage direct-current power supply control device when the dust removal rapping motor operates.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. An embedded electric dust removal operation optimization system is characterized by comprising an embedded optimization system, an electric dust remover control device and a boiler detection device, wherein the embedded optimization system is respectively in communication connection with the electric dust remover control device and the boiler detection device; the electric dust collector control device comprises a dust emission detection device, a carbon monoxide concentration detection device, a high-voltage direct-current power supply control device and a dust removal vibration control device, wherein the dust emission detection device is arranged at the outlet position of the electric dust collector, and the carbon monoxide concentration detection device is arranged in the electric dust collector; the boiler detection system comprises a boiler load detection device and a boiler combustion rate detection device; the embedded optimization system reads detection information from the control device of the electric dust collector and detection information from the boiler detection device, combines real-time operation data of the electric dust collector system through operation design indexes, historical operation records and physical characteristics of coal combusted by a boiler, and dynamically controls the output power of a high-voltage direct-current power supply of the electric dust collector in a closed-loop manner through the control device of the electric dust collector.
2. The embedded electric precipitation operation optimization system of claim 1, wherein the communication link comprises an RS485/RS232 communication link, a MODBUS/TCP communication link, and an OPC communication link.
3. The embedded electric dust removal operation optimization system of claim 1, wherein the high voltage direct current power supply control device controls power output of a high voltage power supply in the electric dust remover.
4. An embedded electric dust removal operation optimization system according to claim 1, wherein said dust removal rapping control device controls the operation period and operation duration of the dust removal rapping motor.
5. An embedded electric precipitation operation optimizing system as claimed in claim 1, 3 or 4, wherein the high voltage DC power supply control device and the dust removal rapping control device cooperate to control the high voltage DC power supply to reduce the output power when the dust removal rapping control device controls the operation of the dust removal rapping motor.
6. The embedded electric precipitation running optimization system of claim 1, wherein the embedded optimization system comprises an embedded computer on which a visual human-computer interaction system runs.
7. The embedded electric dust removal operation optimization system of claim 1, wherein the electric dust remover control device is a PLC or a controller with a single chip microcomputer as a core.
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| CN202020960557.0U CN213435054U (en) | 2020-05-29 | 2020-05-29 | Embedded electric precipitation operation optimization system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114632624A (en) * | 2021-12-06 | 2022-06-17 | 国电环境保护研究院有限公司 | Electric precipitation operation optimization system and optimization method |
| CN114825985A (en) * | 2022-03-18 | 2022-07-29 | 河北邯峰发电有限责任公司 | High-frequency power supply closed-loop energy-saving controller |
| CN117339759A (en) * | 2023-12-04 | 2024-01-05 | 浙江大维高新技术股份有限公司 | Digital twin system and method for dust remover |
-
2020
- 2020-05-29 CN CN202020960557.0U patent/CN213435054U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114632624A (en) * | 2021-12-06 | 2022-06-17 | 国电环境保护研究院有限公司 | Electric precipitation operation optimization system and optimization method |
| CN114632624B (en) * | 2021-12-06 | 2024-04-26 | 国电环境保护研究院有限公司 | Electric dust removal operation optimization system and optimization method |
| CN114825985A (en) * | 2022-03-18 | 2022-07-29 | 河北邯峰发电有限责任公司 | High-frequency power supply closed-loop energy-saving controller |
| CN117339759A (en) * | 2023-12-04 | 2024-01-05 | 浙江大维高新技术股份有限公司 | Digital twin system and method for dust remover |
| CN117339759B (en) * | 2023-12-04 | 2024-04-09 | 浙江大维高新技术股份有限公司 | Digital twin system and method for dust remover |
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