Energy-saving optimization device of electrostatic dust collector

Abstract

The utility model discloses an energy-saving optimization device of an electrostatic dust collector, which comprises the electrostatic dust collector, the output end of the electrostatic dust collector is connected with a turbidity sensor, the turbidity sensor is in communication connection with an intermediate switch, and the intermediate switch is in communication connection with a control system. The input end of the electrostatic dust collector is connected with the high-frequency power source, the control system controls the high-frequency power source to provide an electric field for the electrostatic dust collector, the intermediate switch is in communication connection with the high-frequency power source, and the control system controls and adjusts secondary current of the high-frequency power source to be sent to the electrostatic dust collector. According to the utility model, dust data can be analyzed and operating parameters can be intelligently adjusted on the premise that the dust emission concentration of the outlet of the electrostatic dust collector is not changed, so that the influence of dust on people and the environment is reduced, and meanwhile, the purposes of energy conservation and consumption reduction can be achieved. On the premise of ensuring the emission concentration requirement, the waste of the power consumption of the meaningless electrostatic dust collector can be effectively reduced, and the comprehensive power saving rate can reach more than 15%.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic precipitators, in particular to an energy-saving optimization device for electrostatic precipitators. Background Art

[0002] Electrostatic precipitator is a highly efficient dust removal equipment, which uses high voltage electric field to ionize flue gas. The dust in the airflow is charged and separated from the airflow under the action of the electric field. Electrostatic precipitator is often used to treat dusty gas in the production process of oxidation pellets. Oxidation pelletization is one of the important methods of powder ore agglomeration. First, the powder ore is added with appropriate amount of water and binder to make green balls with uniform viscosity and sufficient strength. After drying and preheating, it is roasted in an oxidizing atmosphere to make the green balls agglomerated into agglomerated ore. Pelletized ore has good cold strength, reducibility and particle size composition, so it is called an important blast furnace charge in the steel industry. Since electrostatic precipitator has obvious advantages in environments with relatively high temperature and large flue gas volume, it plays an important role in improving the quality of the atmospheric environment.

[0003] However, with the introduction of a series of environmental protection policies, the standards for flue gas emissions have become increasingly stringent. That is, it is still difficult for the electrostatic precipitator to meet the dust concentration emission indicators, and its application will also face severe challenges. How to improve the dust removal efficiency through electrostatic precipitator technology innovation has always been a major issue in the field of flue gas dust purification.

[0004] At present, the gas emitted by the existing electrostatic precipitator is mostly sampled manually, and the dust, iron content and other data are collected by analysis, which cannot timely feedback the emission of the electrostatic precipitator, which is easy to cause dust pollution to the environment and harm to human health. It is precisely because the operation effect of the electrostatic precipitator adopts manual adjustment of the electrostatic precipitator power supply operating parameters, which also causes a lot of energy waste. Therefore, an energy-saving optimization device for electrostatic precipitator is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] The content of this utility model is used to introduce the concepts in a brief form, which will be described in detail in the following specific implementation. The content of this utility model is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0006] In view of the problems and deficiencies in the prior art, the utility model provides an energy-saving optimization device for an electrostatic precipitator, which can monitor the dust emission of the electrostatic precipitator in real time online and timely understand whether the dust content is within the standard range. By adopting the new energy-saving optimization device of the utility model, the dust data can be analyzed and the operating parameters can be intelligently adjusted to reduce the impact of dust on the human body and the environment while ensuring that the dust emission concentration at the outlet of the electrostatic precipitator remains unchanged, and the purpose of energy saving and consumption reduction can be achieved at the same time. It is used to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: including an electrostatic precipitator, wherein the output end of the electrostatic precipitator is connected to a turbidity sensor, the turbidity sensor is communicatively connected to an intermediate switch, and the intermediate switch is communicatively connected to a control system; the input end of the electrostatic precipitator is connected to a high-frequency power supply, the control system controls the high-frequency power supply to provide a high-frequency electric field to the electrostatic precipitator, and then the intermediate switch is communicatively connected to the high-frequency power supply, and the control system controls and adjusts the secondary current of the high-frequency power supply to send to the electrostatic precipitator.

[0008] Preferably, the control system is provided with a turbidity upper limit alarm and a turbidity lower limit alarm. The turbidity upper limit alarm and the turbidity lower limit alarm are set in the control system. When the turbidity sensor transmits the monitored turbidity data value through the intermediate switch, if the turbidity data value exceeds the preset upper limit or lower limit, the turbidity upper limit alarm and the turbidity lower limit alarm will sound an alarm, and the operator can be notified in time to handle it.

[0009] Preferably, a mode button is provided on the control panel in the control system, and the automatic control mode or the manual control mode is selected by the mode button. A mode button is provided on the control panel of the control system, and the mode button includes an automatic control mode button and a manual control mode button. When the signal detected by the turbidity sensor is incorrect, the automatic control mode can be turned off by the mode button, and the manual control mode can be selected instead. The operation mode of the electrostatic precipitator is changed manually, which is convenient for the operator to adjust the operation parameters of the electrostatic precipitator.

[0010] Preferably, the control panel of the control system is also provided with an adjustment button, through which the upper limit and lower limit of turbidity are set. The control panel of the control system is also provided with an adjustment button, and the adjustment button includes a turbidity upper limit adjustment button and a turbidity lower limit adjustment button. When starting work, it is necessary to make preset adjustments according to the actual needs of dust emission concentration through the turbidity upper limit adjustment button and the turbidity lower limit adjustment button.

[0011] Compared with the prior art, the beneficial effects provided by the utility model are:

[0012] The utility model has a simple structure and is easy to use. It can intelligently adjust the dust-containing gas discharged by the electrostatic precipitator to reduce the impact of the dust-containing gas on the human body and the environment. The utility model connects the high-frequency power supply, the control system and the turbidity sensor to the intermediate switch, wherein the high-frequency power supply is connected to the input end of the electrostatic precipitator, and the turbidity sensor is arranged at the output end of the electrostatic precipitator. The upper and lower limits of the turbidity need to be set in advance, and then the control system automatically adjusts the operating parameters of the electrostatic precipitator according to the turbidity signal monitored by the turbidity sensor, so that the energy consumption and efficiency of the electrostatic precipitator are optimally balanced. While ensuring the emission concentration requirement, the waste of unnecessary power consumption of the electrostatic precipitator can be effectively reduced, and the comprehensive power saving rate can reach more than 15%. In addition, the control system is also provided with a turbidity upper limit alarm and a turbidity lower limit alarm, which can promptly notify the operator to handle it, greatly improving the energy saving optimization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a connection block diagram of the energy-saving optimization device for electrostatic precipitator of the utility model;

[0014] Figure 2 This is the principle block diagram of the energy-saving optimization device for electrostatic precipitator of the utility model. DETAILED DESCRIPTION

[0015] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0016] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0017] Example

[0018] Reference Figure 1 and Figure 2 As shown, this embodiment provides an energy-saving optimization device for an electrostatic precipitator, including an electrostatic precipitator, wherein a turbidity sensor is connected to the output end of the electrostatic precipitator, the turbidity sensor is communicatively connected to the intermediate switch, and the intermediate switch is communicatively connected to the control system; the input end of the electrostatic precipitator is connected to a high-frequency power supply, the control system controls the high-frequency power supply to provide a high-frequency electric field to the electrostatic precipitator, and then the intermediate switch is communicatively connected to the high-frequency power supply, and the control system controls and adjusts the secondary current of the high-frequency power supply to send to the electrostatic precipitator.

[0019] The electrostatic precipitator uses a high-voltage electric field to ionize the flue gas. The dust in the airflow is charged and separated from the airflow under the action of the electric field. Specifically, the gas molecules are ionized to produce a large number of electrons and ions. These charged electrons and ions move toward the positive and negative poles of the equipment under the action of the electric field force. In the process of movement, they will hit the dust particles in the airflow, causing these particles to be charged. The charged dust particles are separated from the airflow under the action of the electric field force and fly toward the electrode plate with the opposite charge. That is, the negatively charged dust particles fly to the positive electrode, and vice versa. When these charged particles reach the electrode plate, they are adsorbed on the electrode plate due to the electrostatic force, and the gas can be purified.

[0020] The main purpose of connecting a high-frequency power supply to an electrostatic precipitator is to generate a high-frequency electric field, which is used to realize the electrification and removal of dust. A high-frequency power supply is usually composed of a power transformer, a rectifier circuit, a resonant capacitor, and an output transformer. After the high-voltage AC signal is output through the transformer, it is converted into a DC voltage after passing through the rectifier circuit, and then a high-frequency signal is generated through the resonant capacitor, and the high-frequency signal is output to the electrostatic electrode of the electrostatic precipitator through the output transformer. The electric field generated when the high-frequency power supply is working starts from the electrostatic electrode, and the voltage ranges from several thousand volts to tens of kilovolts. The electrostatic electrode and the charged gas form an ionized electric field, which causes the charged ions to exchange charges with the dust particles, resulting in the electrification of the particles. Under the action of the high-frequency electric field, the electrified particles continue to move and collide on the surface of the electrostatic electrode, and will be adsorbed after contacting other particles, electrodes, and other electric surfaces, thereby achieving the effect of removing particles.

[0021] The turbidity sensor installed at the output end of the electrostatic precipitator can monitor the dust concentration output by the electrostatic precipitator in real time. Turbidity sensors are often used as low-cost sensors for household appliances, mostly used to measure the water turbidity of washing machines, dishwashers and other products. The cleanliness of the washed items can be judged by measuring the turbidity of the water, so as to determine the best washing time. The turbidity sensor is connected to the output end of the electrostatic precipitator to measure the dust concentration output by the electrostatic precipitator and monitor and analyze the dust concentration in real time. By monitoring and recording the flow rate and other parameters of the dust, the system operation can be timely grasped to ensure the stability and accuracy of the dust removal effect.

[0022] The turbidity sensor, control system and high-frequency power supply are connected to each other through the intermediate switch. A switch is a network device used for forwarding electrical signals. It can forward and exchange data between different devices in a local area network. The switch has flexible port expansion and can meet long-distance high-speed transmission. It can also automatically identify storage devices and computer devices in the network to ensure smooth network connection of each device and high network transmission efficiency. Common ones include Ethernet switches, telephone voice switches and fiber optic switches.

[0023] This embodiment also includes that a turbidity upper limit alarm and a turbidity lower limit alarm are provided in the control system, and an adjustment button is provided on the control panel of the control system. The control panel of the control system is also provided with an adjustment button, and the upper limit value and the lower limit value of the turbidity are set by the adjustment button. At the beginning of work, according to the actual needs of the dust emission concentration, the turbidity upper limit adjustment button and the turbidity lower limit adjustment button are pre-set and adjusted. When in use, the turbidity data value is transmitted through the intermediate switch through the turbidity sensor. If the turbidity data value exceeds the preset upper limit or lower limit, an alarm is issued through the turbidity upper limit alarm and the turbidity lower limit alarm, and the operator can be notified in time to handle it.

[0024] This embodiment also includes a mode button on the control panel in the control system, through which the automatic control mode or the manual control mode is selected. When the turbidity value signal monitored by the turbidity sensor is incorrect, the mode button can be used to select to turn off the automatic control mode and select the manual control mode, so that the operator can adjust the operating parameters of the electrostatic precipitator conveniently.

[0025] Method of using the utility model

[0026] In the production of oxidized pellets, the chain grate is a device that evenly distributes the iron-containing pellets on the slow-running grate plate, uses the waste heat of the ring cooler and the hot air flow discharged from the rotary kiln to blow dry and exhaust dry the green pellets, preheat, oxidize and consolidate them, and then directly sends them to the rotary kiln for roasting. Therefore, the output of the chain grate is connected to the electrostatic precipitator to remove excess dust particles, and the turbidity sensor connected to the output end of the electrostatic precipitator monitors the concentration, flow rate and temperature of the flue gas after dust removal to see if they meet normal emission requirements.

[0027] Before use, the closed-loop control function of the energy-saving optimization device needs to be debugged. The upper and lower limits of turbidity are set by adjusting the buttons, the deviation is set according to the parameter fluctuations sent to the control system by the turbidity sensor, and then the upper and lower limits of the secondary current adjustment of each high-frequency power supply are set. The control system automatically adjusts the operating parameters of the electrostatic precipitator according to the turbidity signal monitored by the turbidity sensor at the output end of the electrostatic precipitator, so that the energy consumption and efficiency of the electrostatic precipitator are optimally balanced. When the dust emission concentration is higher than the upper limit of the preset value, the secondary current of the high-frequency power supply is controlled to increase, and the dust removal efficiency is improved by increasing the input power of the electric field. When the dust concentration emission is lower than the lower limit of the preset value, the secondary current of the high-frequency power supply is controlled to decrease, and even a certain electric field can be temporarily shut down. Under the requirement of ensuring the emission concentration, the waste of unnecessary power consumption of the electrostatic precipitator can be effectively reduced.

[0028] In the closed-loop automatic adjustment process of the entire device, the parameters for adjusting the operation are different according to the order of the electric field. The automatic adjustment of the electric field parameters is generally carried out in order from back to front, and the adjustment parameters or methods are also based on the step-by-step approach. According to the changes in the monitored turbidity, the operating parameters and operating methods are gradually adjusted instead of making large-scale one-time adjustments directly. The control system can set the control range of turbidity, and can choose whether to participate in automatic control for any electric field. If the signal detected by the turbidity sensor is incorrect, you can also choose to turn off the automatic control mode and manually select the electrostatic precipitator operation mode to facilitate the operator to adjust the electrostatic precipitator operating parameters.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, in the present utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can make the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] The above are only preferred embodiments of the present invention, and the present invention may also have other embodiments. For those skilled in the art, the technical solutions described in the above embodiments may still be modified, or some of the technical features may be replaced by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy-saving optimization device for an electrostatic precipitator, comprising an electrostatic precipitator, characterized in that: The output end of the electrostatic precipitator is connected to a turbidity sensor, which is communicatively connected to an intermediate switch, and the intermediate switch is communicatively connected to a control system; the input end of the electrostatic precipitator is connected to a high-frequency power supply, and the control system controls the high-frequency power supply to provide a high-frequency electric field to the electrostatic precipitator, and then communicatively connects the intermediate switch to the high-frequency power supply, and the control system controls and adjusts the secondary current of the high-frequency power supply to the electrostatic precipitator.

2. The energy-saving optimization device for an electrostatic precipitator according to claim 1, characterized in that: The control system is provided with a turbidity upper limit alarm and a turbidity lower limit alarm.

3. The energy-saving optimization device for an electrostatic precipitator according to claim 2, characterized in that: A mode button is provided on the control panel in the control system, and the automatic control mode or the manual control mode is selected by the mode button.

4. The energy-saving optimization device for an electrostatic precipitator according to claim 3, characterized in that: The control panel of the control system is also provided with adjustment buttons, through which the upper limit value and the lower limit value of turbidity are set.

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