Thermal power generation flue gas purification treatment device and use method thereof

Abstract

The invention discloses a thermal power generation flue gas purification treatment device and a using method thereof, and relates to the technical field of flue gas purification treatment.The thermal power generation flue gas purification treatment device comprises an electric dust remover, corona electrodes, electrode plates, a heat exchange mechanism, a driving mechanism and a cleaning mechanism, the corona electrodes are fixedly installed in the electric dust remover at equal intervals, and the electrode plates are fixedly installed in the electric dust remover at equal intervals; the heat exchange mechanisms are arranged on the two sides of the electric dust remover, the driving mechanism is arranged in the electric dust remover, and the cleaning mechanism conducts vertical reciprocating displacement in the electric dust remover through the driving mechanism and is used for cleaning smoke impurities on corona electrodes and electrode plates. The arrangement mode that the driving mechanism and the cleaning mechanism are matched is utilized, the cleaning mechanism can be driven by the driving mechanism to do reciprocating displacement in the vertical direction, electrode plates and corona electrodes can be comprehensively and effectively cleaned, cross contamination caused by simultaneous cleaning is avoided, and the cleaning efficiency is improved. And power generation efficiency reduction and equipment faults caused by dust accumulation and the like are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas purification treatment, and particularly relates to a flue gas purification treatment device for thermal power generation and its use method. Background Art

[0002] The flue gas purification treatment device for thermal power generation generally includes a denitrification channel, an electrostatic precipitator, and a desulfurization device. The denitrification channel is mainly used to remove nitrogen oxides in the flue gas to reduce environmental pollution caused by nitrogen oxides. The electrostatic precipitator collects particulate matters such as dust in the flue gas through electrostatic action to achieve the purpose of dust removal. The desulfurization device treats sulfur dioxide in the flue gas and converts it into a solid substance, thereby reducing the emission of sulfur dioxide and achieving the effect of purifying the flue gas. These devices cooperate with each other to jointly complete the purification treatment of thermal power generation flue gas.

[0003] When the existing electrostatic precipitator is in use, the dust adsorbed on the corona electrode and the electrode plate is generally cleaned by vibration. However, the vibration mechanism is usually only arranged at one end of the electrode plate. Due to the large volume of the electrode plate system, when the vibration force is transmitted to the entire electrode plate, there will be attenuation, making it difficult for the dust on the anode plate to fall off, which is rather inconvenient. Summary of the Invention

[0004] The purpose of the present invention is to provide a flue gas purification treatment device for thermal power generation and its use method to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A flue gas purification treatment device for thermal power generation, comprising:

[0006] An electrostatic precipitator, both ends of which are fixedly connected with gas pipelines respectively for connecting an external denitrification device and a desulfurizer;

[0007] A corona electrode, which is fixedly installed equidistantly inside the electrostatic precipitator;

[0008] An electrode plate, which is fixedly installed equidistantly inside the electrostatic precipitator and is used for adsorbing electrically charged soot impurities attached to the corona electrode;

[0009] A heat exchange mechanism, which is arranged on both side edges of the electrostatic precipitator;

[0010] A driving mechanism, which is arranged inside the electrostatic precipitator and cooperates with the heat exchange mechanism;

[0011] A cleaning mechanism, which vertically reciprocates inside the electrostatic precipitator through the driving mechanism and is used for cleaning the soot impurities on the corona electrode and the electrode plate.

[0012] Preferably, the heat exchange mechanism includes:

[0013] A water tank symmetrically and fixedly installed on both sides of the electrostatic precipitator;

[0014] Heat exchange fins equidistantly embedded on both sides of the electrostatic precipitator for replacing the heat inside with the water inside the water tank;

[0015] A stirring frame slidably arranged inside the water tank;

[0016] A rotating shaft, with grooves equidistantly opened at the bottom end of the stirring frame, and the end of the rotating shaft is rotatably inserted and connected to the inner wall of the groove;

[0017] Stirring blades equidistantly and fixedly connected to the outer wall of the rotating shaft, and the stirring blades cooperate with the heat exchange fins.

[0018] Preferably, the driving mechanism includes:

[0019] A motor fixedly installed on the top of the electrostatic precipitator;

[0020] A driving rod, with the end of the driving rod rotatably inserted and connected to the inner wall of the electrostatic precipitator;

[0021] A lifting plate, and the lifting plate forms a lead screw drive with the driving rod;

[0022] A lifting rod, with one end of the lifting rod passing through the electrostatic precipitator and fixedly connected to the lifting plate, and the other end of the lifting rod passing through the water tank and fixedly connected to the stirring frame.

[0023] Preferably, the cleaning mechanism includes:

[0024] Fixed rods, with through grooves equidistantly opened on the lifting plate, and the ends of the fixed rods are fixedly connected to the inner walls of the through grooves;

[0025] Sliding blocks symmetrically and slidably sleeved on the outside of the fixed rods;

[0026] Cleaning plates symmetrically fixedly connected to both sides of the sliding blocks, and bristles are fixedly connected to both sides of the cleaning plates;

[0027] Guide wheels equidistantly and fixedly installed at the bottom end of the cleaning plates;

[0028] First compression springs sleeved on the outside of the fixed rods, and the ends of the first compression springs are fixedly connected to the sliding blocks;

[0029] Extrusion cleaning components equidistantly arranged at the bottom end of the inner wall of the electrostatic precipitator;

[0030] The positioning component is arranged inside the sliding block and is used to fix the sliding block.

[0031] Preferably, the extrusion and cleaning component includes:

[0032] Cross bars, which are fixedly connected to the inside of the electrostatic precipitator at equal intervals;

[0033] Expansion frames, which are fixedly connected to the tops of the cross bars at equal intervals;

[0034] Extrusion frames, which are slidably sleeved on the outside of the expansion frames;

[0035] Second compression springs, which are sleeved on the outside of the expansion frames. One end of each second compression spring is fixedly connected to the extrusion frame, and the other end is fixedly connected to the cross bar.

[0036] Preferably, the extrusion and cleaning component further includes:

[0037] Cleaning brushes, which are fixedly connected to the outer walls of the extrusion frames;

[0038] Cleaning hooks, which are fixedly connected to the side of the extrusion frame opposite to the corona electrode at equal intervals and are used to clean the cleaning plate. The cross section of each cleaning hook is L-shaped.

[0039] Preferably, the positioning component includes:

[0040] Positioning rods. Positioning grooves are arranged at equal intervals at the top of the sliding block. Positioning holes communicating with the through grooves are arranged at equal intervals at the top of the lifting plate. One end of each positioning rod is slidably inserted into the inner cavity of the positioning groove, and the other end is matched with the inner cavity of the positioning hole. The cross section of each positioning rod is T-shaped;

[0041] Balls, which are embedded at the tops of the positioning rods and are used to fit the top end of the inner wall of the through groove;

[0042] Third compression springs, which are arranged inside the positioning grooves. One end of each third compression spring is fixedly connected to the positioning rod, and the other end is fixedly connected to the inner wall of the positioning groove.

[0043] Preferably, the positioning component further includes:

[0044] Extrusion rods, which are fixedly connected to the top ends of the inner walls of the electrostatic precipitator at equal intervals and are used to release the clamping state between the positioning rods and the positioning holes.

[0045] Preferably, dust collection hoppers are fixedly connected to the bottom end of the electrostatic precipitator at equal intervals and are used to centrally collect the cleaned dust and impurities.

[0046] The present invention also provides a method for using a flue gas purification treatment device for thermal power generation, including the following specific use steps:

[0047] Step 1: Real-time collect the ash accumulation thickness data at different positions inside the electrostatic precipitator, and transmit the collected data to the data acquisition system through corresponding signal transmission lines;

[0048] Step 2: Process and analyze the collected ash accumulation thickness signal using digital signal processing technology;

[0049] Step 3: When the ash accumulation thickness reaches the preset warning value, a warning signal is issued. At the same time, this warning signal can be transmitted to the motor control module to start the motor. The motor drives the lifting plate to move vertically downward inside the electrostatic precipitator through a driving rod. Under the elastic force of the first compression spring, the cleaning plate will clean multiple electrode plates. When the guiding wheel contacts the extrusion frame, it will drive the extrusion frame to move downward to compress the second compression spring. At the same time, under the guidance of the inclined surface at the top of the extrusion frame, the cleaning plate drives the sliding block to compress the first compression spring until the positioning rod is engaged with the positioning hole. At this time, the brush hairs on the other side of the cleaning plate will closely adhere to the corona electrode. After the cleaning plate changes position, the motor will pause for 10S and then rotate in the reverse direction, so that the cleaning plate can be driven by the lifting plate to clean the corona electrode. At the same time, when rising, the cleaning hook will clean the dust in the gaps between the brush hairs of the cleaning plate. When the lifting plate drives the cleaning plate to move to the highest point of the electrostatic precipitator again, the engagement of the positioning rod is released through the extrusion rod, so that it can be reset again under the elastic force of the first compression spring. This cycle continues until the monitored thickness reaches the preset stop range, so that the motor is stopped when the cleaning plate is at the highest position, the warning is cancelled, and the monitoring continues;

[0050] Step 4: After the cleaning is completed, store the ash accumulation thickness data collected before and after the cleaning, and analyze and evaluate the operating status of the electrostatic precipitator and the cleaning mechanism.

[0051] Technical effects and advantages of the present invention:

[0052] (1) The present invention uses a setting method in which the driving mechanism and the cleaning mechanism cooperate with each other. Through the driving mechanism, the cleaning mechanism can be driven to perform reciprocating displacement in the vertical direction. And during the vertical downward movement of the cleaning mechanism, it can move closely along the electrode plate, and during the vertical upward movement, it can move closely along the corona electrode, which can comprehensively and effectively clean the electrode plate and the corona electrode, and avoid cross-contamination caused by simultaneous cleaning, and avoid the reduction of power generation efficiency and equipment failures caused by problems such as ash accumulation;

[0053] (2) The present invention uses a setting method in which a cross bar, a telescopic frame, a squeezing frame, a second compression spring, a cleaning brush and a cleaning hook cooperate with each other. The symmetrically inclined squeezing frame can change the position of the cleaning plate through a guide wheel and achieve positioning through a positioning component, so as to realize intermittent differential cleaning of the electrode plate and the corona electrode. It can clean by closely adhering to the electrode plate downward and the corona electrode upward. Through the intermittent cleaning action, it can avoid excessive wear on the surfaces of the electrode plate and the corona electrode caused by continuous cleaning, extend their service life, and the cleaning brush cleans the positions not cleaned by the cleaning plate when the squeezing frame moves, and at the same time, when the cleaning plate changes position, it can clean the dust on the cleaning plate through the cleaning hook, avoid dust accumulation on the cleaning plate, affect the subsequent cleaning effect, improve the cleaning efficiency and quality, effectively ensure the normal operation of the thermal power generation system, and reduce various faults and problems that may be caused by dust accumulation;

[0054] (3) The present invention uses a setting method in which a driving mechanism and a heat exchange mechanism cooperate with each other. While the driving mechanism drives the cleaning mechanism to clean the electrode plate and the corona electrode, it can drive the stirring frame to perform reciprocating displacement in the vertical direction inside the water tank, so that the stirring blades can rotate under the limit of the heat exchange fins, efficiently stir the water inside the water tank, make the water flow more evenly, and the heat transfer more rapid, and can quickly take away the heat generated during the process of cleaning the electrode plate and the corona electrode, avoiding the adverse effects caused by heat accumulation on the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0056] Figure 2 is a schematic diagram of the internal structure of the side of the electrostatic precipitator of the present invention.

[0057] Figure 3 is a schematic diagram of the internal structure of the front of the electrostatic precipitator of the present invention.

[0058] Figure 4 is a schematic diagram of the internal structure of the top view of the electrostatic precipitator of the present invention.

[0059] Figure 5 is the present invention Figure 3 The enlarged schematic diagram at position A in.

[0060] Figure 6 is the present invention Figure 3 The enlarged schematic diagram at position B in.

[0061] Figure 7 is a schematic diagram of the structure of the cleaning hook of the present invention.

[0062] Figure 8 is the present invention Figure 4 The enlarged schematic diagram at position C in.

[0063] Figure 9 This is a schematic diagram of the internal structure of the front side of the lifting plate of the present invention.

[0064] Figure 10 For the present invention Figure 9 The enlarged schematic diagram of the structure at position D in the present invention.

[0065] In the figure: 1. Electrostatic precipitator; 2. Corona electrode; 3. Electrode plate; 4. Heat exchange mechanism; 41. Water tank; 42. Heat exchange fins; 43. Stirring frame; 44. Rotating shaft; 45. Stirring blades; 5. Driving mechanism; 51. Motor; 52. Driving rod; 53. Lifting plate; 54. Lifting rod; 6. Cleaning mechanism; 61. Fixed rod; 62. Sliding block; 63. Cleaning plate; 64. Guide wheel; 65. First compression spring; 66. Extrusion cleaning assembly; 661. Cross bar; 662. Telescopic frame; 663. Extrusion frame; 664. Second compression spring; 665. Cleaning brush; 666. Cleaning hook; 67. Positioning assembly; 671. Positioning rod; 672. Ball; 673. Third compression spring; 674. Extrusion rod; 7. Dust collection hopper. Specific embodiments

[0066] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0067] The present invention provides a Figure 1-10 A flue gas purification treatment device for thermal power generation as shown, including an electrostatic precipitator 1, a corona electrode 2, an electrode plate 3, a heat exchange mechanism 4, a driving mechanism 5 and a cleaning mechanism 6. Both ends of the electrostatic precipitator 1 are fixedly connected with gas pipelines, which are respectively used to connect an external denitration device and a desulfurizer, for adsorbing and ionizing dust and other impurities in the flue gas, so as to effectively purify the flue gas generated by thermal power generation. The corona electrodes 2 are equidistantly and fixedly installed inside the electrostatic precipitator 1, and the electrode plates 3 are equidistantly and fixedly installed inside the electrostatic precipitator 1, for adsorbing the charged soot impurities attached by the corona electrodes 2. The heat exchange mechanism 4 is arranged on both sides of the electrostatic precipitator 1, the driving mechanism 5 is arranged inside the electrostatic precipitator 1, the driving mechanism 5 cooperates with the heat exchange mechanism 4, and the cleaning mechanism 6 vertically reciprocates inside the electrostatic precipitator 1 through the driving mechanism 5 to clean the soot impurities on the corona electrodes 2 and the electrode plates 3.

[0068] The heat exchange mechanism 4 includes a water tank 41, heat exchange fins 42, a stirring frame 43, a rotating shaft 44 and stirring blades 45. The water tank 41 is symmetrically and fixedly installed on both sides of the electrostatic precipitator 1, providing a dedicated place for heat replacement, and can effectively collect and store the heat replaced from the inside of the electrostatic precipitator 1. The heat exchange fins 42 are equidistantly embedded on both sides of the electrostatic precipitator 1, and are used to replace the heat inside to the water in the water tank 41. The heat exchange fins 42 are in close contact with the inside of the electrostatic precipitator 1, and can quickly conduct the heat inside the electrostatic precipitator 1 to itself, and then transfer it to the water in the water tank 41, realizing efficient heat replacement, helping to reduce the temperature inside the electrostatic precipitator 1, avoiding damage to the internal components of the electrostatic precipitator 1 caused by high temperature, and extending the service life of the equipment. The stirring frame 43 is slidably arranged inside the water tank 41. Grooves are equidistantly opened at the bottom end of the stirring frame 43. The end of the rotating shaft 44 is rotatably inserted into the inner wall of the groove. The stirring blades 45 are equidistantly fixedly connected to the outer wall of the rotating shaft 44. The stirring blades 45 cooperate with the heat exchange fins 42. The stirring frame 43 is slidably arranged inside the water tank 41. Through the cooperation with the rotating shaft 44 and the action of the stirring blades 45, the water inside the water tank 41 can be continuously circulated, so that the heat can be more evenly distributed in the water, accelerating the heat exchange speed and improving the heat exchange efficiency. At the same time, stirring can also prevent the water inside the water tank 41 from having local high temperature or low temperature, ensuring the stability and reliability of the entire heat exchange process.

[0069] Specifically, the driving mechanism 5 includes a motor 51, a driving rod 52, a lifting plate 53 and a lifting rod 54. The motor 51 is fixedly installed at the top of the electrostatic precipitator 1. The end of the driving rod 52 is rotatably inserted into the inner wall of the electrostatic precipitator 1. The lifting plate 53 forms a lead screw drive with the driving rod 52. One end of the lifting rod 54 passes through the electrostatic precipitator 1 and is fixedly connected to the lifting plate 53. The other end of the lifting rod 54 passes through the water tank 41 and is fixedly connected to the stirring frame 43. The motor 51 is electrically connected to an external power supply through an external switch. By the motor 51, the driving rod 52 can be driven to rotate in the positive and negative directions, so that the lifting plate 53 can perform reciprocating displacement in the vertical direction under the limitation of the lifting rod 54, thereby driving the cleaning mechanism 6 to clean the electrode plate 3 and the corona electrode 2. At the same time, the stirring frame 43 can also be driven by the lifting rod 54 to perform reciprocating displacement inside the water tank 41. When the stirring frame 43 performs displacement, the heat exchange fins 42 can squeeze the stirring blades 45, so that the stirring blades 45 can rotate when moving with the stirring frame 43, thus realizing the stirring of the water inside the water tank 41 without providing additional power, accelerating the heat replacement speed. Such a design not only ensures the effective cleaning of the electrode plate 3 and the corona electrode 2, but also realizes the natural circulation heat exchange of the water inside the water tank 41 through the movement of the stirring frame 43, improving the heat dissipation efficiency of the entire electrostatic precipitator 1, helping to maintain a stable operating environment inside the electrostatic precipitator 1, and avoiding affecting the performance and life of the equipment due to high temperature.

[0070] Specifically, the cleaning mechanism 6 includes a fixed rod 61, a sliding block 62, a cleaning plate 63, a guide wheel 64, a first compression spring 65, an extrusion cleaning assembly 66 and a positioning assembly 67. Through grooves are equidistantly formed in the lifting plate 53. The end of the fixed rod 61 is fixedly connected to the inner wall of the through groove. The sliding block 62 is symmetrically sleeved outside the fixed rod 61 in a sliding manner. The cleaning plates 63 are symmetrically and fixedly connected to both side edges of the sliding block 62. Brush hairs are fixedly connected to both side edges of the cleaning plate 63. The guide wheels 64 are equidistantly fixedly installed at the bottom end of the cleaning plate 63. The first compression spring 65 is sleeved outside the fixed rod 61, and the end of the first compression spring 65 is fixedly connected to the sliding block 62. The extrusion cleaning assemblies 66 are equidistantly arranged at the bottom end of the inner wall of the electrostatic precipitator 1. The positioning assembly 67 is arranged inside the sliding block 62 for fixing the sliding block 62. The first compression spring 65 is always in a compressed state, so that a stable elastic force can be provided to the cleaning plate 63 through the sliding block 62, enabling the cleaning plate 63 to closely adhere to the electrode plate 3. When the lifting plate 53 moves vertically downward, it is convenient to clean the electrode plate 3, and then change the position under the guidance of the extrusion cleaning assembly 66, so that the cleaning plate 63 can be positioned against one side of the corona electrode 2 under the positioning of the positioning assembly 67. When moving vertically upward, the corona electrode 2 can be cleaned, and when rising to the topmost point, the positioning of the positioning assembly 67 is released, and it fits with the electrode plate 3 again. In this way, the continuous and efficient cleaning of the electrode plate 3 and the corona electrode 2 is realized. The one-way downward cleaning method can ensure that dust and other impurities on the surface of the electrode plate 3 can be more thoroughly removed. Due to the action of gravity, dust and other impurities will be more likely to fall along the cleaning direction, avoiding the residue and accumulation of impurities on the surface of the electrode plate 3, thereby maintaining the cleanliness of the electrode plate 3 and improving its efficiency of adsorbing and ionizing dust and other impurities in the flue gas. Secondly, when cleaning the corona electrode 2 in one-way upward direction, the cleaned dust can be adsorbed by the cleaned electrode plate 3 even if it does not fall, avoiding secondary dust generation, effectively reducing the risk of equipment failure caused by impurity accumulation, and prolonging the service life of the equipment.

[0071] Further, the extrusion and cleaning assembly 66 includes a cross bar 661, a telescopic frame 662, an extrusion frame 663, a second compression spring 664, a cleaning brush 665 and a cleaning hook 666. The cross bar 661 is fixedly connected to the inside of the electrostatic precipitator 1 at equal intervals. The telescopic frame 662 is fixedly connected to the top of the cross bar 661 at equal intervals. The extrusion frame 663 is slidably sleeved on the outside of the telescopic frame 662. The second compression spring 664 is sleeved on the outside of the telescopic frame 662. One end of the second compression spring 664 is fixedly connected to the extrusion frame 663, and the other end of the second compression spring 664 is fixedly connected to the cross bar 661. The cleaning brush 665 is fixedly connected to the outer wall of the extrusion frame 663. The cleaning hooks 666 are fixedly connected to the side of the extrusion frame 663 opposite to the corona electrode 2 at equal intervals for cleaning the cleaning plate 63. The cross section of the cleaning hook 666 is L-shaped. The symmetrically inclined extrusion frame 663 can change the position of the cleaning plate 63 through the guide wheel 64 and realize positioning through the positioning assembly 67, so as to realize the intermittent differential cleaning of the electrode plate 3 and the corona electrode 2, cleaning closely against the electrode plate 3 downward and closely against the corona electrode 2 upward. Through the intermittent cleaning action, it can avoid excessive wear on the surfaces of the electrode plate 3 and the corona electrode 2 caused by continuous cleaning, extend their service life, and the cleaning brush 665 cleans the positions on the cleaning plate 63 that have not been cleaned when the extrusion frame 663 moves. At the same time, when the cleaning plate 63 changes position, the cleaning hook 666 can also clean the dust on the cleaning plate 63, avoiding the accumulation of dust on the cleaning plate 63 and affecting the subsequent cleaning effect, improving the cleaning efficiency and quality, effectively ensuring the normal operation of the thermal power generation system, and reducing various faults and problems that may be caused by dust accumulation. The structure of the cleaning hook 666 is as Figure 7 shown. Its top is conical, which is convenient for the bristles on the cleaning plate 63 to pass through, and when the cleaning plate 63 rises, the impurities and dust are scraped off by its bottom, which is convenient for use, realizing the self-cleaning of the cleaning plate 63 and avoiding the accumulation of dust on the cleaning plate 63.

[0072] Further, the positioning component 67 includes a positioning rod 671, a ball 672, a third compression spring 673, and an extrusion rod 674. The top of the sliding block 62 is equidistantly provided with positioning grooves, and the top of the lifting plate 53 is equidistantly provided with positioning holes communicating with the through grooves. One end of the positioning rod 671 is slidably inserted into the inner cavity of the positioning groove, and the other end of the positioning rod 671 is matched with the inner cavity of the positioning hole. The cross-section of the positioning rod 671 is T-shaped. The ball 672 is embedded in the top of the positioning rod 671 for fitting the top end of the inner wall of the through groove. The third compression spring 673 is arranged inside the positioning groove. One end of the third compression spring 673 is fixedly connected to the positioning rod 671, and the other end of the third compression spring 673 is fixedly connected to the inner wall of the positioning groove. The third compression spring 673 is always in a compressed state, so as to provide a stable elastic force for the positioning rod 671, so that the ball 672 on the positioning rod 671 can closely adhere to the top end of the inner wall of the middle through groove, and when the cleaning plate 63 moves along with the guide wheel 64, it can pop out and be snap-connected and positioned when it coincides with the positioning hole, realizing self-position change and positioning during vertical displacement, facilitating the cleaning plate 63 to closely adhere to the electrode plate 3 during the vertical downward movement and closely adhere to the corona electrode 2 during the vertical upward movement, and being able to comprehensively and effectively clean the electrode plate 3 and the corona electrode 2. The extrusion rods 674 are equidistantly and fixedly connected to the top end of the inner wall of the electrostatic precipitator 1, and the extrusion rods 674 are used to release the snap connection state between the positioning rod 671 and the positioning hole. When the lifting plate 53 rises to the highest position, the extrusion rod 674 will extrude the positioning rod 671, so that the positioning rod 671 disengages from the positioning hole, and thus it can be reset again under the elastic force of the first compression spring 65, so as to clean the electrode plate 3 for the next vertical downward movement without manual intervention, greatly improving the operation efficiency and stability of the equipment, realizing the rapid switching of the cleaning plate 63 between the electrode plate 3 and the corona electrode 2, thus ensuring the continuous and efficient cleaning of both, and providing a solid guarantee for the stable operation of the flue gas purification treatment device for thermal power generation.

[0073] Both the cleaning plate 63 and the bristles on the cleaning brush 665 are made of insulating materials, and the first compression spring 65, the second compression spring 664, and the third compression spring 673 are all coated with insulating paint on the outside for normal use inside the electrostatic precipitator 1.

[0074] Further, the bottom end of the electrostatic precipitator 1 is equidistantly and fixedly connected with dust collection hoppers 7 for centrally collecting the cleaned dust and impurities.

[0075] Usage method of the present invention:

[0076] Step 1: Real-time collect the ash accumulation thickness data at different positions inside the electrostatic precipitator 1, and transmit the collected data to the data acquisition system through corresponding signal transmission lines;

[0077] Step 2: Process and analyze the collected ash accumulation thickness signals using digital signal processing techniques;

[0078] Step 3: When the ash accumulation thickness reaches the preset warning value, a warning signal is issued. Meanwhile, this warning signal can be transmitted to the motor control module to start the motor 51. The motor 51 drives the lifting plate 53 to move vertically downward inside the electrostatic precipitator 1 through the driving rod 52. Under the elastic force of the first compression spring 65, the cleaning plate 63 will clean the multiple electrode plates 3. When the guiding wheel 64 contacts the extrusion frame 663, it will drive the extrusion frame 663 to move downward to compress the second compression spring 664. At the same time, under the guidance of the inclined surface at the top of the extrusion frame 663, the cleaning plate 63 drives the sliding block 62 to compress the first compression spring 65 until the positioning rod 671 is engaged with the positioning hole. At this time, the bristles on the other side of the cleaning plate 63 will closely adhere to the corona electrode 2. After the cleaning plate 63 changes its position, the motor 51 will pause for 10S and then rotate in the reverse direction, so as to drive the cleaning plate 63 to clean the corona electrode 2 through the lifting plate 53. At the same time, when rising, the cleaning hook 666 will clean the dust in the gaps between the bristles of the cleaning plate 63. When the lifting plate 53 drives the cleaning plate 63 to move to the highest point of the electrostatic precipitator 1 again, the engagement of the positioning rod 671 is released through the extrusion rod 674, so as to reset again under the elastic force of the first compression spring 65. This cycle repeats until the monitored thickness reaches the preset stop range, so as to stop the motor 51 when the cleaning plate 63 is at the highest position, cancel the warning, and continue to monitor;

[0079] Step 4: After the cleaning is completed, store the collected ash accumulation thickness data before and after cleaning, and analyze and evaluate the operating states of the electrostatic precipitator 1 and the cleaning mechanism 6.

[0080] Among them, the motor control module in Step 3 is the motor controller fixed outside the water tank 41, specifically as Figure 1 shown, which can control the start / stop, rotation speed, and rotation direction of the motor 51.

[0081] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flue gas purification and treatment device for thermal power generation, characterized in that, Comprising: An electrostatic precipitator (1), both ends of the electrostatic precipitator (1) are fixedly connected with gas transmission pipes, which are respectively used for connecting an external denitration device and a desulfurizer; A corona electrode (2), the corona electrode (2) is fixedly installed equidistantly inside the electrostatic precipitator (1); Electrode plates (3), the electrode plates (3) are fixedly installed equidistantly inside the electrostatic precipitator (1), and are used for adsorbing charged soot impurities attached to the corona electrode (2); A heat exchange mechanism (4), the heat exchange mechanism (4) is arranged on both side edges of the electrostatic precipitator (1); A driving mechanism (5), the driving mechanism (5) is arranged inside the electrostatic precipitator (1), and the driving mechanism (5) cooperates with the heat exchange mechanism (4); A cleaning mechanism (6), the cleaning mechanism (6) vertically reciprocates inside the electrostatic precipitator (1) through the driving mechanism (5), and is used for cleaning the soot impurities on the corona electrode (2) and the electrode plates (3).

2. The flue gas purification and treatment device for thermal power generation according to claim 1, wherein The heat exchange mechanism (4) includes: Water tanks (41), the water tanks (41) are symmetrically and fixedly installed on both side edges of the electrostatic precipitator (1); Heat exchange fins (42), the heat exchange fins (42) are embedded equidistantly on both side edges of the electrostatic precipitator (1), and are used for transferring the internal heat to the water inside the water tanks (41); A stirring frame (43), the stirring frame (43) is slidably arranged inside the water tank (41); A rotating shaft (44), grooves are equidistantly opened at the bottom end of the stirring frame (43), and the end of the rotating shaft (44) is rotationally inserted and connected with the inner wall of the groove; Stirring blades (45), the stirring blades (45) are equidistantly fixedly connected to the outer wall of the rotating shaft, and the stirring blades (45) cooperate with the heat exchange fins (42).

3. The flue gas purification and treatment device for thermal power generation according to claim 2, characterized in that, The driving mechanism (5) includes: A motor (51), the motor (51) is fixedly installed at the top end of the electrostatic precipitator (1); A driving rod (52), the end of the driving rod (52) is rotationally inserted and connected with the inner wall of the electrostatic precipitator (1); A lifting plate (53), the lifting plate (53) forms a lead screw drive with the driving rod (52); A lifting rod (54), one end of the lifting rod (54) passes through the electrostatic precipitator (1) and is fixedly connected with the lifting plate (53), and the other end of the lifting rod (54) passes through the water tank (41) and is fixedly connected with the stirring frame (43).

4. A flue gas purification and treatment device for thermal power generation according to claim 3, characterized in that, The cleaning mechanism (6) includes: Fixed rods (61), through grooves are equidistantly opened on the lifting plate (53), and the ends of the fixed rods (61) are fixedly connected with the inner walls of the through grooves; Sliding blocks (62), the sliding blocks (62) are symmetrically slidably sleeved on the outside of the fixed rods (61); Cleaning plates (63), the cleaning plates (63) are symmetrically fixedly connected to both side edges of the sliding blocks (62), and bristles are fixedly connected to both side edges of the cleaning plates (63); Guide wheels (64), the guide wheels (64) are equidistantly fixedly installed at the bottom end of the cleaning plates (63); First compression springs (65), the first compression springs (65) are sleeved on the outside of the fixed rods (61), and the ends of the first compression springs (65) are fixedly connected with the sliding blocks (62); The extrusion cleaning assembly (66) is equidistantly arranged at the bottom end of the inner wall of the electrostatic precipitator (1); The positioning assembly (67) is arranged inside the sliding block (62) and is used to fix the sliding block (62).

5. The flue gas purification and treatment device according to claim 4, characterized in that The extrusion cleaning assembly (66) includes: The cross bar (661) is equidistantly and fixedly connected inside the electrostatic precipitator (1); The telescopic frame (662) is equidistantly and fixedly connected to the top end of the cross bar (661); The extrusion frame (663) is slidably sleeved outside the telescopic frame (662); The second compression spring (664) is sleeved outside the telescopic frame (662). One end of the second compression spring (664) is fixedly connected to the extrusion frame (663), and the other end of the second compression spring (664) is fixedly connected to the cross bar (661).

6. The flue gas purification and treatment device for thermal power generation according to claim 5, wherein, The extrusion cleaning assembly (66) further includes: The cleaning brush (665) is fixedly connected to the outer wall of the extrusion frame (663); The cleaning hook (666) is equidistantly and fixedly connected to the side of the extrusion frame (663) opposite to the corona electrode (2) and is used to clean the cleaning plate (63). The cross section of the cleaning hook (666) is L-shaped.

7. A flue gas purification and treatment device for thermal power generation according to claim 4, characterized in that, The positioning assembly (67) includes: The positioning rod (671). The top end of the sliding block (62) is equidistantly provided with positioning grooves, and the top end of the lifting plate (53) is equidistantly provided with positioning holes communicating with the through grooves. One end of the positioning rod (671) is slidably inserted into the inner cavity of the positioning groove, the other end of the positioning rod (671) is matched with the inner cavity of the positioning hole, and the cross section of the positioning rod (671) is T-shaped; The ball (672) is embedded at the top of the positioning rod (671) and is used to fit the top end of the inner wall of the through groove; The third compression spring (673) is arranged inside the positioning groove. One end of the third compression spring (673) is fixedly connected to the positioning rod (671), and the other end of the third compression spring (673) is fixedly connected to the inner wall of the positioning groove.

8. A flue gas purification and treatment device for thermal power generation according to claim 7, characterized in that, The positioning assembly (67) further includes: The extrusion rod (674) is equidistantly and fixedly connected to the top end of the inner wall of the electrostatic precipitator (1), and the extrusion rod (674) is used to release the clamping state between the positioning rod (671) and the positioning hole.

9. The flue gas purification and treatment device for thermal power generation according to claim 1, wherein The bottom end of the electrostatic precipitator (1) is equidistantly and fixedly connected with a dust collecting hopper (7) for centrally collecting the cleaned dust and impurities.

10. A method for using a flue gas purification treatment device for thermal power generation according to any one of claims 1-9, characterized in that, It includes the following specific usage steps: Step 1: Real-time collect the ash accumulation thickness data at different positions inside the electrostatic precipitator (1), and transmit the collected data to the data acquisition system through the corresponding signal transmission line; Step 2: Process and analyze the collected ash accumulation thickness signal using digital signal processing technology; Step 3: When the dust accumulation thickness reaches the preset warning value, a warning signal is issued. At the same time, this warning signal can be transmitted to the motor control module to start the motor (51). The motor (51) drives the lifting plate (53) to move vertically downward inside the electrostatic precipitator (1) through the driving rod (52). Under the elastic force of the first compression spring (65), the cleaning plate (63) will clean the multiple electrode plates (3). When the guiding wheel (64) contacts the extrusion frame (663), it will drive the extrusion frame (663) to move downward to compress the second compression spring (664). At the same time, under the guidance of the inclined surface at the top of the extrusion frame (663), the cleaning plate (63) drives the sliding block (62) to compress the first compression spring (65) until the positioning rod (671) is engaged with the positioning hole. At this time, the bristles on the other side of the cleaning plate (63) will closely adhere to the corona electrode (2). After the cleaning plate (63) changes its position, the motor (51) will pause for 10S and then rotate in the reverse direction, so as to drive the cleaning plate (63) to clean the corona electrode (2) through the lifting plate (53). At the same time, when rising, the cleaning hook (666) will clean the dust in the gaps between the bristles of the cleaning plate (63). When the lifting plate (53) drives the cleaning plate (63) to move to the highest point of the electrostatic precipitator (1) again, the engagement of the positioning rod (671) is released through the extrusion rod (674), and then it resets again under the elastic force of the first compression spring (65). This cycle repeats until the monitored thickness reaches the preset stop range, so as to stop the motor (51) when the cleaning plate (63) is at the highest point, cancel the warning, and continue to monitor; Step 4: After the cleaning is completed, the dust accumulation thickness data collected before and after cleaning are stored, and the operating states of the electrostatic precipitator (1) and the cleaning mechanism (6) are analyzed and evaluated.

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