Energy-saving and emission-reducing particulate matter control device for thermal power plant

Abstract

The invention discloses an energy-saving and emission-reducing particulate matter control device for a thermal power plant, and relates to the technical field of thermal power plant flue gas control, the energy-saving and emission-reducing particulate matter control device comprises a control pipe body fixed on a flue gas exhaust pipeline through a support, one side of the top of the control pipe body is fixedly communicated with a flue gas outlet pipe, and the lower end of the side of the control pipe body is fixedly communicated with a flue gas inlet pipe; a partition plate is fixed in the control pipe body to divide the control pipe body into a spraying area and a partition area, when the spraying area needs to be cleaned, a stepping motor is controlled to work through an external control PLC, the stepping motor drives a transmission shaft to start to rotate, the transmission shaft drives a plurality of spraying discs and a plurality of telescopic cleaning mechanisms on a connecting roller to rotate, and the spraying disc and the telescopic cleaning mechanisms are driven to rotate. The multiple telescopic cleaning mechanisms rotationally stretch out to clean the inner wall of the spraying area, the inner wall of the spraying area is kept clean, in the rotary cleaning process, a PLC can control an electric push rod to drive a servo motor and a transmission shaft connected with the electric push rod to move front and back, and therefore the area of the spraying position of a spraying disc is cleaned, and dead-corner-free cleaning of the spraying area is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of smoke control in thermal power plants, and in particular to a particle control device for energy saving and emission reduction in thermal power plants. Background Art

[0002] Energy conservation and emission reduction in thermal power plants refers to reducing energy consumption and emissions of harmful substances in thermal power plants through a series of measures. This includes improving the efficiency of coal-fired power generation, optimizing the operation of thermal power units and boilers, implementing efficient and clean coal blending, energy-saving operation of desulfurization devices, energy-saving of electrostatic precipitators, and energy-saving of fans. In order to achieve energy conservation and emission reduction, thermal power plants actively adopt high-parameter large-capacity units, develop cogeneration, accelerate the transformation of existing small and medium-sized condensing units, and strictly limit the construction of new small and medium-sized condensing units. At the same time, thermal power plants also set up energy-saving leadership groups to formulate and implement energy-saving plans, coordinate energy-saving work among various departments, and set up full-time energy-saving engineers to be responsible for the implementation and publicity and education of specific energy-saving measures. Among them, energy conservation and emission reduction in thermal power plants are closely related to the control of particulate matter in the exhaust gas. The implementation of energy-saving and emission reduction measures not only helps to reduce energy consumption and emissions, but also effectively controls particulate matter in flue gas and reduces the generation of pollutants such as PM2.5. During thermal power generation, the flue gas produced by combustion contains a large amount of particulate matter and dust. When it is discharged to the outside, it is necessary to intercept and filter the particulate matter in the flue gas through spraying and filtering equipment.

[0003] Traditional flue gas particle filtering devices generally have a spray structure inside, which absorbs and filters the particles entering the internal flue gas by spraying, such as "A flue gas dust removal method and equipment for a thermal power plant" provided by Chinese patent authorization announcement No. CN118236795A. The exhaust fan is turned on to let the flue gas in the treatment box enter the interior of the spray chamber from the ventilation port, and the flue gas is sprayed inside the spray chamber. The water body contacts the flue gas and can wet the dust and particles in the flue gas, thereby increasing the weight of the particles themselves. As a result, the particles fall directly into the collection drawer under the action of gravity, which can effectively remove the particles in the flue gas, and then the treated flue gas can be discharged from the exhaust port.

[0004] However, since the sprinkler head sprays water to filter particles in the flue gas, it is mainly based on the two principles of physical adsorption and gravity sedimentation, that is, it requires the particles to come into contact with the liquid, and the sprayed water does not completely cover the spray chamber. Therefore, in this process, some particles in the flue gas first come into contact with the inner wall of the pipe when they are in contact with the water, and then adsorbed on the inner wall of the spray chamber and gradually increase over time, making it difficult to use the spray chamber normally and requiring regular manual cleaning, which is relatively troublesome.

[0005] Therefore, it is necessary to design a particle control device that can be cleaned to save energy and reduce emissions in thermal power plants to solve the problem. Summary of the invention

[0006] The present invention provides a particle control device for energy saving and emission reduction in a thermal power plant, which solves the above-mentioned technical problems.

[0007] In order to solve the above technical problems, the present invention provides a particulate matter control device for energy conservation and emission reduction in thermal power plants, including a control tube body fixed on a smoke exhaust pipe by a support, a smoke outlet pipe is fixedly connected to one side of the top of the control tube body, and a smoke inlet pipe is fixedly connected to the lower end of the control tube body. A partition is fixed inside the control tube body to divide it into a spray area and a separation area. A stepper motor is arranged inside the separation area. The output shaft of the stepper motor is connected to a transmission shaft through a coupling transmission. The transmission shaft extends through the partition and the control tube body. A connecting roller is fixed on the outside of the transmission shaft in the spray area. A plurality of spray discs are evenly fixed on the outside of the connecting roller. Each spray disc is fixed on one side. A fixed telescopic cleaning mechanism, a discharge groove is provided at the bottom of the control tube body in the spraying area, a drainage net is fixedly installed in the discharge groove, a water delivery channel is provided inside the transmission shaft, the water delivery channel is connected with a plurality of diversion channels, the diversion channels penetrate the connecting rollers and are respectively connected with a plurality of spray discs, the transmission shaft is located at the outer end face of the control tube body and is rotatably connected with a rotating joint connected with the water delivery channel, and the rotating joint is fixedly connected with an external water delivery pipe, a connecting frame is fixed at the side end of the control tube body away from the smoke inlet pipe, an electric push rod is fixed inside the connecting frame, the telescopic part of the electric push rod penetrates the control tube body to the partition area, and is fixed with a connecting ring, and the connecting ring is sleeved and fixed on the stepping motor.

[0008] Furthermore, the transmission shaft passes through the control tube body and the partition, and a bearing seat is fixedly installed thereon, and the transmission shaft can be displaced in the bearing seat.

[0009] Furthermore, the electric push rod and the stepper motor are electrically controlled and connected to an external PLC control terminal.

[0010] Furthermore, a plurality of water outlet holes are evenly arranged on the annular end surface of the spray disc, and a connecting hole is arranged at the upper portion where the spray disc is connected to the telescopic cleaning mechanism.

[0011] Furthermore, the telescopic cleaning mechanism includes a connecting plate fixedly connected to the connecting roller and the spray disc, a telescopic groove is opened through the top of the connecting plate, a telescopic plate is inserted into the telescopic groove, a cleaning scraper is fixed on the top of the telescopic plate, a water transfer interlayer is opened at the bottom of the telescopic plate, and a magnetic ring is fixed at the edge of the opening, and a magnetic plate is fixed at the bottom of the telescopic groove of the connecting plate and is magnetically attracted to the magnetic ring.

[0012] Furthermore, the connection plate is connected to the interior of the spray disc through the connection hole.

[0013] Furthermore, the top opening cross-section of the connecting plate telescopic groove is convex, and the bottom cross-section of the telescopic plate is also convex to match and limit the connection plate.

[0014] Furthermore, the side cross-section of the cleaning scraper is triangular, a plurality of water outlet holes are opened on one side of the cleaning scraper and connected to the water delivery interlayer, and a cleaning hard brush is fixed on the other side of the cleaning scraper.

[0015] Furthermore, the telescopic plate is fully extended in the telescopic groove of the connecting plate to contact the inner wall of the control tube body.

[0016] Furthermore, the external water delivery pipe is connected to an external high-pressure water pump to input external water into the water delivery channel of the transmission shaft and spray it out in a ring shape from the multiple spray discs.

[0017] Compared with the related art, the particle control device for energy saving and emission reduction in thermal power plants provided by the present invention has the following advantages:

[0018] Beneficial effects:

[0019] The present invention provides a telescopic cleaning mechanism. When the spray area needs to be cleaned, the stepper motor is controlled by an external PLC controller. The stepper motor drives the transmission shaft to start rotating. The transmission shaft drives multiple spray discs and multiple telescopic cleaning mechanisms on the connecting roller to rotate. The multiple telescopic cleaning mechanisms rotate and extend to clean the inner wall of the spray area to keep it clean. During the rotation cleaning process, the PLC controller can control the electric push rod to drive the servo motor and the connected transmission shaft to move forward and backward, thereby cleaning the area where the spray disc sprays, thereby achieving dead-angle cleaning of the spray area.

[0020] The present invention provides that when the telescopic plate is extended, the bottom of the telescopic plate no longer blocks the connecting hole, and the water in the spray disc flows into the telescopic slot and enters the water delivery interlayer of the telescopic plate, and is sprinkled from multiple water outlet holes to the inner wall of the spray area with high-speed rotation, which plays a wetting role, thereby assisting in scraping the spray area and improving the cleaning effect. In addition, a cleaning hard brush is installed on the cleaning scraper, which can realize brushing and cleaning of the spray area, greatly improving the cleaning effect. In addition, when the cleaning hard brush passes through the drainage net, it can clean and dredge its mesh, effectively preventing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of a particulate matter control device for energy saving and emission reduction in a thermal power plant according to the present invention;

[0022] Figure 2 It is a cross-sectional schematic diagram of a particulate matter control device for energy saving and emission reduction in a thermal power plant according to the present invention;

[0023] Figure 3 This is a three-dimensional schematic diagram of the internal structure of a particle control device for energy saving and emission reduction in a thermal power plant according to the present invention;

[0024] Figure 4 It is a schematic cross-sectional diagram of the internal structure of a particle control device for energy saving and emission reduction in a thermal power plant according to the present invention;

[0025] Figure 5 It is a schematic diagram of the telescopic cleaning mechanism of the present invention;

[0026] Figure 6 This is an enlarged schematic diagram of point A of the present invention;

[0027] Figure 7 It is a cross-sectional schematic diagram of the telescopic cleaning mechanism of the present invention;

[0028] Figure 8 It is an enlarged schematic diagram of point B of the present invention.

[0029] Numbers in the figure: 1. control pipe body; 11. partition; 12. drainage net; 2. smoke outlet pipe; 3. connecting frame; 4. electric push rod; 5. smoke inlet pipe; 6. external water pipe; 7. transmission shaft; 71. rotating joint; 72. water channel; 8. stepping motor; 81. connecting ring; 9. connecting roller; 91. spray disc; 911. water outlet hole 1; 912. connecting hole; 10. telescopic cleaning mechanism; 101. connecting plate; 102. water interlayer; 103. telescopic plate; 104. cleaning scraper; 105. water outlet hole 2; 106. cleaning hard brush; 107. magnetic plate. DETAILED DESCRIPTION

[0030] Embodiment 1, by Figure 1-8A particle control device for energy conservation and emission reduction in thermal power plants is provided, comprising a control pipe body 1 fixed on a smoke exhaust pipe by a support, a smoke outlet pipe 2 is fixedly connected to one side of the top of the control pipe body 1, a smoke inlet pipe 5 is fixedly connected to the lower end of the side of the control pipe body 1, a partition 11 is fixed inside the control pipe body 1 to divide it into a spraying area and a separation area, a stepper motor 8 is arranged inside the separation area, an output shaft of the stepper motor 8 is connected to a transmission shaft 7 through a coupling transmission, the transmission shaft 7 extends through the partition 11 and the control pipe body 1, a connecting roller 9 is fixed outside the transmission shaft 7 in the spraying area, a plurality of spray discs 91 are evenly fixed outside the connecting roller 9, a telescopic cleaning mechanism 10 is fixed to one side of each spray disc 91, a discharge groove is provided at the bottom of the control pipe body 1 in the spraying area, a drainage net 12 is fixedly installed in the discharge groove, a water delivery channel 72 is provided inside the drive shaft 7, and the water delivery channel 72 is connected to a plurality of The diversion channel passes through the connecting roller 9 and is connected with multiple spray discs 91 respectively. The transmission shaft 7 is located at the outer end face of the control tube body 1 and is rotatably connected with a rotating joint 71 and is connected with the water supply channel 72, and the rotating joint 71 is fixedly connected with an external water supply pipe 6. The side end of the control tube body 1 away from the smoke inlet pipe 5 is fixed with a connecting frame 3, and an electric push rod 4 is fixed inside the connecting frame 3. The telescopic part of the electric push rod 4 passes through the control tube body 1 to the partition area and is fixed with a connecting ring 81. The connecting ring 81 is sleeved and fixed on the stepping motor 8. The external water supply pipe 6 is connected to an external high-pressure water pump to input external water into the water supply channel 72 of the transmission shaft 7 and spray it out in a ring shape from the multiple spray discs 91. The electric push rod 4 and the stepping motor 8 are electrically controlled and connected with the external PLC control end. The transmission shaft 7 passes through the control tube body 1 and the partition 11 is fixedly installed with a bearing seat, and the transmission shaft 7 can be displaced in the bearing seat.

[0031] Specifically, an external high-pressure pump is controlled by an external PLC controller to transport water to the water delivery channel 72 of the transmission shaft 7 through an external water delivery pipe 6, and then transported to multiple spray discs 91 through multiple branch channels. The water is sprayed in a circular shape through the annularly distributed water outlet holes 911 on the spray disc 91 to vertically cover the circular surface of the spray area. The annular water sprayed from multiple spray discs 91 forms multiple spray circular surfaces; the smoke generated by the combustion of the thermal power plant is discharged through the smoke exhaust pipe, and the smoke inlet pipe 5 is connected to the smoke exhaust pipe, so that the smoke enters the control pipe body 1 and is discharged from the smoke outlet pipe 2 through multiple spray circular surfaces. When the smoke passes through the spray circular surface, the dust particles collide, intercept and condense with the droplets, thereby removing the dust and droplets in the smoke, thereby controlling the particulate matter. The wastewater with adsorbed particles finally falls and is discharged to the outside from the drainage network 12; when the spray area needs to be cleaned, the stepper motor 8 is controlled by the external PLC controller, and the stepper motor 8 drives the transmission shaft 7 to start rotating, and the transmission shaft 7 drives the multiple spray discs 91 and the multiple telescopic cleaning mechanisms 10 on the connecting roller 9 to rotate, and the multiple telescopic cleaning mechanisms 10 rotate and extend to clean the inner wall of the spray area to keep it clean. During the rotation cleaning process, the PLC controller can control the electric push rod 4 to drive the servo motor and the connected transmission shaft 7 to move back and forth, so as to clean the area where the spray disc 91 sprays, thereby achieving dead-angle cleaning of the spray area.

[0032] In this embodiment, a plurality of water outlet holes 911 are evenly formed on the annular end surface of the spray disc 91, and a connecting hole 912 is formed on the upper portion of the spray disc 91 and connected to the telescopic cleaning mechanism 10; water is transported to the plurality of spray discs 91, and is sprayed out in a circular shape through the annularly distributed water outlet holes 911 on the spray disc 91 to vertically cover the circular surface of the spray area; when the telescopic cleaning mechanism 10 is extended, the water enters the telescopic cleaning mechanism 10 and is sprinkled out, and is sprinkled onto the inner wall of the spray area with high-speed rotation, thereby wetting the water.

[0033] Embodiment 2, on the basis of embodiment 1, the telescopic cleaning mechanism 10 includes a connecting plate 101 fixedly connected to the connecting roller 9 and the spraying disc 91, a telescopic groove is opened through the top of the connecting plate 101, a telescopic plate 103 is inserted and connected in the telescopic groove, a cleaning scraper 104 is fixed to the top of the telescopic plate 103, a water transfer interlayer 102 is opened at the bottom of the telescopic plate 103, and a magnetic ring is fixed to the edge of the opening, a magnetic plate 107 is fixed to the bottom of the telescopic groove of the connecting plate 101, and is magnetically attracted to the magnetic ring, and the telescopic plate 103 is fully extended in the telescopic groove of the connecting plate 101 to contact the inner wall of the control tube body 1.

[0034] Among them, the transmission shaft 7 drives the multiple spray discs 91 and multiple telescopic cleaning mechanisms 10 on the connecting roller 9 to rotate. As the transmission shaft 7 rotates rapidly, the centrifugal force generated gradually increases. When the centrifugal force is greater than the magnetic attraction of the magnetic plate 107 and the magnetic ring, the telescopic plate 103 is extended by the centrifugal force, and the bottom convex shape cooperates with the convex opening of the telescopic groove to limit the position. At this time, the cleaning scraper 104 contacts the inner wall of the spray area of ​​the control tube body 1. During the rotation of the connecting roller 9, the scraper scrapes off the stains adsorbed on the inner wall of the spray area, and can also perform the smoke particle adsorption work normally. When the telescopic plate 103 is extended, the bottom of the telescopic plate 103 no longer blocks the connecting hole 912, and the water in the spray disc 91 flows into the telescopic slot and enters the water delivery interlayer 102 of the telescopic plate 103, and is sprinkled from the multiple water outlet holes 105 to the inner wall of the spray area with high-speed rotation, which plays a role of wetting, thereby assisting in scraping the spray area and improving the cleaning effect.

[0035] The connecting plate 101 is connected to the inside of the spray disc 91 through the connecting hole 912 ; when the telescopic plate 103 is retracted in the telescopic groove inside the connecting plate 101 , the bottom of the telescopic plate 103 contacts and blocks the connecting hole 912 , making it difficult for water to enter the inside of the connecting plate 101 .

[0036] Among them, the top opening cross-section of the telescopic slot of the connecting plate 101 is convex, and the bottom cross-section of the telescopic plate 103 is also convex to match and limit it; the telescopic plate 103 is extended due to the centrifugal force, and is limited by the convex bottom shape and the convex opening of the telescopic slot.

[0037] In this embodiment, the side cross-section of the cleaning scraper 104 is triangular in shape. One side of the cleaning scraper 104 is provided with a plurality of water outlet holes 105 connected to the water delivery interlayer 102 , and the other side of the cleaning scraper 104 is fixed with a cleaning hard brush 106 .

[0038] Specifically, water enters the water delivery interlayer 102, and is sprinkled out from the multiple water outlet holes 105 to the inner wall of the spraying area as it rotates at high speed, which plays a wetting role, thereby assisting in scraping the spraying area and improving the cleaning effect. In addition, a cleaning hard brush 106 is installed on the cleaning scraper 104, which can scrape and clean the spraying area, greatly improving the cleaning effect. In addition, when the cleaning hard brush 106 passes through the drainage net 12, its mesh can be cleaned and unblocked to effectively prevent blockage.

[0039] Working principle:

[0040] When in use, an external high-pressure pump is controlled by an external PLC controller to transport water to the water delivery channel 72 of the transmission shaft 7 through the external water delivery pipe 6. The water can also be replaced with desulfurized liquid, and then transported to multiple spray discs 91 through multiple branch channels. The water is sprayed in a circular shape through the annularly distributed water outlet holes 911 on the spray disc 91 to vertically cover the circular surface of the spray area. The annular water sprayed by multiple spray discs 91 forms multiple spray circular surfaces.

[0041] The flue gas generated by the combustion of the thermal power plant is discharged through the smoke exhaust pipe. The smoke inlet pipe 5 is connected to the smoke exhaust pipe, so that the smoke enters the control pipe body 1 and is discharged from the smoke outlet pipe 2 through multiple spray circular surfaces. When the smoke passes through the spray circular surfaces, the dust particles collide, intercept and condense with the droplets, thereby removing the dust and droplets in the smoke, thereby controlling the discharge of particulate matter and reducing the pollution of the smoke to the air, thereby achieving the energy saving and emission reduction effect of the thermal power plant. The sewage that adsorbs the particulate matter finally falls and is discharged from the drainage network 12 to the outside;

[0042] When the spray area needs to be cleaned, the stepper motor 8 is controlled by an external PLC controller, and the stepper motor 8 drives the transmission shaft 7 to start rotating, and the transmission shaft 7 drives the multiple spray discs 91 and multiple telescopic cleaning mechanisms 10 on the connecting roller 9 to rotate. As the transmission shaft 7 rotates rapidly, the centrifugal force generated gradually increases. When the centrifugal force is greater than the magnetic attraction between the magnetic plate 107 and the magnetic ring, the telescopic plate 103 is extended by the centrifugal force, and the convex bottom shape cooperates with the convex opening of the telescopic groove to limit the position. At this time, the cleaning scraper 104 contacts the inner wall of the spray area of ​​the control tube body 1. During the rotation of the connecting roller 9, the scraper scrapes off the stains adsorbed on the inner wall of the spray area, and can also perform the smoke particle adsorption work normally;

[0043] At the same time, when the telescopic plate 103 is extended, the bottom of the telescopic plate 103 no longer blocks the connecting hole 912, and the water in the spray disc 91 flows into the telescopic slot and enters the water delivery interlayer 102 of the telescopic plate 103, and is sprayed from the multiple water outlet holes 105 to the inner wall of the spray area with high-speed rotation, which plays a role in wetting, thereby assisting in scraping the spray area and improving the cleaning effect. In addition, a cleaning hard brush 106 is installed on the cleaning scraper 104, which can realize brushing and cleaning of the spray area, greatly improving the cleaning effect. In addition, when the cleaning hard brush 106 passes through the drainage net 12, it can clean and dredge its mesh, effectively preventing blockage.

[0044] During the rotation cleaning process, the PLC controller can control the electric push rod 4 to drive the servo motor and the connected transmission shaft 7 to move forward and backward, so as to clean the area where the spraying disc 91 is sprayed, thereby achieving no dead angle cleaning in the spraying area;

[0045] When the stepper motor 8 is controlled to stop working, as the selection speed decreases, the centrifugal force decreases and disappears. When the multiple telescopic cleaning mechanisms 10 slowly rotate upward, the telescopic plate 103 is retracted downward into the telescopic groove of the connecting plate 101 due to gravity. The magnetic ring and the magnetic plate 107 are magnetically attracted to each other, and the magnetic force is greater than the centrifugal force of the slow rotation, so that the retraction is completed.

Claims

1. A particle control device for energy saving and emission reduction in a thermal power plant, comprising a control pipe body (1) fixed on a smoke exhaust pipe by a support, characterized in that: A smoke outlet pipe (2) is fixedly connected to one side of the top of the control tube body (1), and a smoke inlet pipe (5) is fixedly connected to the lower end of the control tube body (1). A partition (11) is fixed inside the control tube body (1) to divide the control tube body (1) into a spraying area and a separation area. A stepper motor (8) is arranged inside the separation area. The output shaft of the stepper motor (8) is connected to a transmission shaft (7) through a coupling. The transmission shaft (7) extends through the partition (11) and the control tube body (1). A connecting roller (9) is fixed outside the transmission shaft (7) in the spraying area. A plurality of spray discs (91) are evenly fixed outside the connecting roller (9). A telescopic cleaning mechanism (10) is fixed on one side of each spray disc (91). A discharge groove is provided at the bottom of the control tube body (1) in the spraying area. A drainage net (12) is fixedly installed, a water delivery channel (72) is opened inside the transmission shaft (7), the water delivery channel (72) is connected to a plurality of diversion channels, the diversion channels penetrate the connecting roller (9) and are respectively connected to a plurality of spray discs (91), the transmission shaft (7) is located at the outer end surface of the control pipe body (1) and is rotatably connected to a rotating joint (71) and is connected to the water delivery channel (72), and the rotating joint (71) is fixedly connected to an external water delivery pipe (6), the side end of the control pipe body (1) away from the smoke inlet pipe (5) is fixed to a connecting frame (3), an electric push rod (4) is fixed inside the connecting frame (3), the telescopic part of the electric push rod (4) penetrates the control pipe body (1) to the partition area, and is fixed to a connecting ring (81), and the connecting ring (81) is sleeved and fixed on the stepping motor (8).

2. A particulate matter control device for energy saving and emission reduction in thermal power plants according to claim 1, characterized in that: The transmission shaft (7) passes through the control tube body (1) and the partition plate (11), and a bearing seat is fixedly installed thereon, and the transmission shaft (7) can be displaced in the bearing seat.

3. A particulate matter control device for energy saving and emission reduction in thermal power plants according to claim 1, characterized in that: The electric push rod (4) and the stepping motor (8) are electrically controlled and connected to an external PLC control terminal.

4. A particulate matter control device for energy saving and emission reduction in thermal power plants according to claim 1, characterized in that: The annular end surface of the spray disc (91) is evenly provided with a plurality of water outlet holes (911), and a connection hole (912) is provided at the upper portion where the spray disc (91) is connected to the telescopic cleaning mechanism (10).

5. A particulate matter control device for energy saving and emission reduction in thermal power plants according to claim 1, characterized in that: The telescopic cleaning mechanism (10) comprises a connecting plate (101) fixedly connected to a connecting roller (9) and a spraying disc (91); a telescopic groove is provided through the top of the connecting plate (101); a telescopic plate (103) is inserted and connected in the telescopic groove; a cleaning scraper (104) is fixed to the top of the telescopic plate (103); a water conveying interlayer (102) is provided at the bottom of the telescopic plate (103); a magnetic ring is fixed to the edge of the opening; a magnetic plate (107) is fixed to the bottom of the telescopic groove of the connecting plate (101) and is magnetically attracted to the magnetic ring.

6. A particulate matter control device for energy saving and emission reduction in thermal power plants according to claim 5, characterized in that: The connecting plate (101) is connected to the interior of the spraying disc (91) through the connecting hole (912).

7. A particulate matter control device for energy saving and emission reduction in thermal power plants according to claim 5, characterized in that: The top opening cross section of the telescopic groove of the connecting plate (101) is convex, and the bottom cross section of the telescopic plate (103) is also convex to match and limit the connection plate (101).

8. A particulate matter control device for energy saving and emission reduction in thermal power plants according to claim 5, characterized in that: The side cross-section of the cleaning scraper (104) is triangular in shape. A plurality of water outlet holes (105) are provided on one side of the cleaning scraper (104) and are connected to the water supply interlayer (102). A cleaning hard brush (106) is fixed on the other side of the cleaning scraper (104).

9. A particulate matter control device for energy saving and emission reduction in thermal power plants according to claim 5, characterized in that: The telescopic plate (103) is fully extended in the telescopic groove of the connecting plate (101) to contact the inner wall of the control tube body (1).

10. A particulate matter control device for energy saving and emission reduction in a thermal power plant according to claim 1, characterized in that: The external water delivery pipe (6) is connected to an external high-pressure water pump to input external water into the water delivery channel (72) of the transmission shaft (7) and spray it out in a circular shape from the plurality of spray discs (91).

Images