Ring beam and control method for high-temperature cylindrical horizontal high-temperature electrostatic precipitator

Abstract

The present invention discloses a ring beam and a control method for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator, and relates to the field of high-temperature dust removal technology. It is used to solve the problem that the existing ring beam of the dust collector is used in a high-temperature environment, and the heat dissipation is not timely, and dead cavity is easy to appear, resulting in potential safety hazards in the ring beam. It includes: a rib plate, which is arranged inside the ring beam, and vents are arranged on it to allow the gas inside the ring beam to flow; an insulation layer, which is arranged on the side of the inner arc plate included in the ring beam away from the outer arc plate; a temperature sensor, which is arranged in the ring beam, and is used to determine the cavity temperature of the ring beam; an air intake duct, whose outlet is arranged below the ring beam, and is used to fill cooling air into the inside of the ring beam.

Description

Technical Field

[0001] The present invention relates to the technical field of high-temperature dust removal, and more specifically to a ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator and a control method thereof. Background Art

[0002] Existing ESPs are divided into square ESPs and cylindrical ESPs according to their shapes, among which cylindrical ESPs are further divided into horizontal ESPs and vertical ESPs. Vertical ESPs are mainly suitable for equipment with small flue gas volumes, while horizontal ESPs are suitable for flue gas dust removal in large projects. The applicable temperature of the common cylindrical horizontal ESPs on the market is below 250°C, mainly because the high temperature environment affects the discharge of the ESP, and the high temperature will increase the requirements for the equipment material, so the inlet flue gas temperature will be lowered when the ESP is designed.

[0003] The existing dust collector ring beam is designed according to low temperature requirements, and does not take into account the insulation, heat preservation and heat dissipation of the ring beam. When the temperature rises, the performance of the ring beam may decrease; furthermore, due to the setting of the rib plate, multiple dead cavities will appear in the existing dust collector ring beam. The dead cavity has little effect in a low temperature environment, but in a high temperature environment, the heat conduction of the ring beam will cause heat concentration in the dead cavity, affecting the high temperature performance of the ring beam.

[0004] In summary, the existing dust collector ring beam is used in a high temperature environment, and the heat dissipation is not timely, and dead cavity is prone to occur, which leads to safety hazards of the ring beam. Summary of the invention

[0005] The embodiments of the present invention provide a ring beam and a control method for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator, which are used to solve the problem that the existing ring beam of the precipitator is used in a high-temperature environment, has untimely heat dissipation, and is prone to dead cavity, resulting in safety hazards of the ring beam.

[0006] The embodiment of the present invention provides a ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator, comprising:

[0007] The rib plate is arranged inside the annular beam and has ventilation holes thereon to allow air to flow inside the annular beam;

[0008] A heat-insulating layer is arranged on a side of the inner arc plate of the annular beam away from the outer arc plate;

[0009] A temperature sensor is arranged in the annular beam and is used to determine the cavity temperature of the annular beam; an air intake duct, whose outlet is arranged below the annular beam, is used to charge cooling air into the interior of the annular beam.

[0010] Preferably, the annular beam is composed of two semi-annular beams, each of which comprises an inner arc plate, an outer arc plate and side ring plates arranged on both sides of the inner arc plate and the outer arc plate, and the openings of the two semi-annular beams are in contact to form the annular beam;

[0011] A semi-ring beam inlet is arranged at the bottom of each semi-ring beam, and the semi-ring beam inlet is communicated with the outlet of the air intake duct;

[0012] An air intake duct connected to an inlet of a semi-ring beam is connected to a fan, or an air intake duct connected to two inlets of the semi-ring beams is connected to each other and is connected to a fan.

[0013] Preferably, it also includes a cooling water pipeline, a controller, an air intake valve, and a cooling water valve;

[0014] The cooling water pipe outlet is arranged on the air inlet pipe, and is used to fill the interior of the annular beam with cooling spray;

[0015] The air intake valve is arranged on the air intake duct and is used to open or close the cooling air entering the cavity of the semi-ring beam;

[0016] The cooling water valve is arranged on the cooling water pipeline and is located between the air intake valve and the air intake pipeline inlet, and is used to control the flow rate of the cooling spray entering the cavity of the semi-ring beam;

[0017] The controller is electrically connected to the air intake valve and the cooling water valve respectively.

[0018] Preferably, it also includes a vent pipe, a first temperature sensor and a second temperature sensor;

[0019] A plurality of first temperature sensors are arranged on the side ring plate included in each of the semi-ring beams, for determining a first temperature of the side plate;

[0020] The vent pipe is arranged at the top of the semi-ring beam, and when its inlet is respectively connected with the cavity outlets of the two semi-ring beams, two second temperature sensors are respectively arranged on the vent pipe, respectively used to determine the second temperature of the gas discharged from each semi-ring beam cavity; or, when its inlet is only connected with the cavity outlet of one semi-ring beam, one second temperature sensor is arranged on the vent pipe, used to determine the second temperature of the gas discharged from the cavity of the semi-ring beam;

[0021] The controller is electrically connected to the first temperature sensor and the second temperature sensor respectively.

[0022] Preferably, it also includes a plurality of atomizing nozzles and a steam trap;

[0023] A plurality of atomizing nozzles surround the outlet of the cooling water pipeline and are evenly arranged at the outlet of the cooling water pipeline to atomize the cooling water;

[0024] The drain valve is arranged at the lowest end of the air intake pipeline and is used to drain the accumulated water in the air intake pipeline.

[0025] Preferably, the rib is rectangular;

[0026] Multiple ventilation holes are evenly arranged on both sides; or

[0027] A vent hole is provided in the middle; or

[0028] Ventilation gaps are provided on both sides.

[0029] Preferably, the thermal insulation layer comprises a nano thermal insulation board, a second ceramic fiber blanket layer and a second ceramic fiber module layer;

[0030] The nano thermal insulation board is attached to the inner surfaces of the inner arc board and the side ring board, the second ceramic fiber blanket layer is attached to the nano thermal insulation board, and the second ceramic fiber module layer is attached to the second ceramic fiber blanket layer.

[0031] Preferably, the second ceramic fiber blanket includes one layer of ceramic fiber blanket, or two layers of ceramic fiber blanket, and an aluminum foil layer is provided between the two layers of ceramic fiber blanket;

[0032] The second ceramic fiber module layers are all module layers formed by folding a ceramic fiber blanket and then extruding and packaging it, and a curing agent layer is attached to the outer surface of the second ceramic fiber module layer.

[0033] The embodiment of the present invention provides a method for controlling a high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam, which is applied to the above-mentioned high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam, comprising:

[0034] When it is determined that the cavity temperature of the annular beam is higher than the first set temperature, the air intake valve is opened to allow the cooling air in the air intake duct to enter the annular beam and ventilate the annular beam through the plurality of ribs in sequence;

[0035] When the air intake valve opening time exceeds the first set time and it is determined that the temperature of the cavity is higher than the first set temperature, the cooling water valve is controlled to open by 25% so that the cooling spray in the cooling water pipeline enters the annular beam and sequentially passes through the plurality of ribs to cool the annular beam;

[0036] When it is determined that the temperature of the annular beam cavity is higher than the second set temperature, the cooling water valve is controlled to open 50%;

[0037] When it is determined that the temperature of the annular beam cavity is higher than the third set temperature, the cooling water valve is controlled to open 75%;

[0038] When the cooling water is opened for 75% of the time exceeding the second set time and the temperature of the cavity is higher than the third set temperature, the cooling water valves are controlled to be fully opened and a closing signal is sent to the front-end heat source equipment.

[0039] Preferably, the cavity temperature of the annular beam includes a first temperature of the side ring plate and a second temperature of the gas;

[0040] The annular beam is composed of two half-annular beams, each of which includes an inner arc plate, an outer arc plate, and side ring plates arranged on both sides of the inner arc plate and the outer arc plate, and a plurality of first temperature sensors are arranged on the side ring plates to determine the first temperature of the side ring plates;

[0041] The vent pipe is arranged at the top of the annular beam. When its inlet is respectively connected to the cavity outlets of the two semi-annular beams, two second temperature sensors are respectively arranged on the vent pipe, which are respectively used to determine the second temperature of the gas discharged from each semi-annular beam cavity; or, when its inlet is only connected to the cavity outlet of one semi-annular beam, one second temperature sensor is arranged on the vent pipe, which is used to determine the second temperature of the gas discharged from the cavity of the semi-annular beam.

[0042] Preferably, the first set temperature includes the first temperature of the first set area and the first temperature of the second set area; the second set temperature includes the second temperature of the first set area and the second temperature of the second set area; the third set temperature includes the third temperature of the first set area and the third temperature of the second set area;

[0043] When it is determined that the first temperature is higher than the first temperature of the first setting area, the air intake valve is opened to allow the cooling air in the air intake duct to enter the annular beam, and the annular beam is ventilated in sequence through multiple ribs; when the air intake valve opening time exceeds the first setting time, and when it is determined that the first temperature is higher than the first temperature of the first setting area, the cooling water valve is controlled to be opened by 25%, so that the cooling spray in the cooling water duct enters the annular beam, and the annular beam is cooled in sequence through multiple ribs; when it is determined that the first temperature is higher than the second temperature of the first setting area, the cooling water valve is controlled to be opened by 50%; when it is determined that the first temperature is higher than the third temperature of the first setting area, the cooling water valve is controlled to be opened by 75%; when the cooling water is opened for 75% of the time that exceeds the second setting time, and the first temperature is higher than the third temperature of the first setting area, the cooling water valve is controlled to be fully opened, and a closing signal is sent to the front-end heat source equipment; or

[0044] When it is determined that the second temperature is higher than the first temperature of the second setting area, the air intake valve is opened; so that the cooling air in the air intake duct enters the annular beam, and the annular beam is ventilated in sequence through multiple ribs; when the opening time of the air intake valve exceeds the first setting time, and when it is determined that the second temperature is higher than the first temperature of the second setting area, the cooling water valve is controlled to be opened by 25%, so that the cooling spray in the cooling water duct enters the annular beam, and the annular beam is cooled in sequence through multiple ribs; when it is determined that the second temperature is higher than the second temperature of the second setting area, the cooling water valve is controlled to be opened by 50%; when it is determined that the second temperature is higher than the third temperature of the second setting area, the cooling water valve is controlled to be opened by 75%; when the cooling water is opened for 75% of the time that exceeds the second setting time, and the second temperature is higher than the third temperature of the second setting area, the cooling water valve is controlled to be fully opened, and a closing signal is sent to the front-end heat source equipment.

[0045] Preferably, the first temperature of the first setting area and the first temperature of the second setting area have the same priority, the second temperature of the first setting area and the second temperature of the second setting area have the same priority, and the third temperature of the first setting area and the third temperature of the second setting area have the same priority;

[0046] The priority of the third temperature in the first setting area is greater than the priority of the second temperature in the first setting area, and the priority of the second temperature in the first setting area is greater than the priority of the first temperature in the first setting area.

[0047] Preferably, it also includes:

[0048] When it is determined that the temperature of the annular beam cavity is higher than the second set temperature, it indicates that the system temperature is abnormal and turns on a first-level alarm;

[0049] When it is determined that the temperature of the annular beam cavity is higher than the third set temperature, it indicates that the system temperature is abnormal and turns on the second-level alarm;

[0050] When the cooling water is turned on for 75% of the time exceeding the second set time, and the temperature of the cavity is higher than the third set temperature, it prompts that the system temperature is abnormal and turns on the third level alarm.

[0051] An embodiment of the present invention provides a ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator, comprising: a rib plate, which is arranged inside the ring beam and has air holes arranged on it to allow air to flow inside the ring beam; a thermal insulation layer, which is arranged on a side of the inner arc plate included in the ring beam away from the outer arc plate; a temperature sensor, which is arranged in the ring beam and is used to determine the cavity temperature of the ring beam; an air intake duct, whose outlet is arranged below the ring beam and is used to fill cooling air into the interior of the ring beam. The embodiment of the present invention provides a ring beam. In order to avoid the problem of performance degradation of the ring beam due to high temperature, a heat insulation layer is set inside the ring beam, which performs internal heat insulation on the ring beam and reduces the heat conducted to the ring beam, so as to meet the requirements of high temperature use; the high temperature inside the equipment will still be transmitted to the side wall of the ring beam along the contact point between the anode suspension beam and the side wall of the ring beam, and the ring beam will still have the problem of local high temperature on the side wall and overall temperature rise; furthermore, in order to solve the problem of heat concentration caused by the dead cavity of the ring beam due to heat conduction, on the one hand, the rib plate is improved, and vents are set on the rib plate, which can solve the problem of dead cavity inside; on the other hand, a temperature sensor is set on the side wall and the top of the ring beam, and the controller can control the air intake pipe and the cooling water pipe to ventilate and cool the ring beam internally according to the temperature determined by the temperature sensor, so as to carry the hot gas inside the ring beam, reduce the overall temperature of the ring beam, and improve the safety performance of the ring beam. The ring beam can solve the problem that the existing dust collector ring beam is used in a high temperature environment, the heat dissipation is not timely, and the dead cavity is easy to appear, resulting in the safety hazard of the ring beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0053] Figure 1 A schematic diagram of the structure of an annular beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator provided in an embodiment of the present invention;

[0054] Figure 2 A schematic diagram of the thermal insulation layer provided in an embodiment of the present invention;

[0055] Figure 3 A schematic diagram of the structure of the thermal insulation layer provided in an embodiment of the present invention;

[0056] Figure 4A A schematic diagram of a first rib plate structure provided in an embodiment of the present invention;

[0057] Figure 4BA schematic diagram of a second rib plate structure provided by an embodiment of the present invention;

[0058] Figure 4C A schematic diagram of a third rib plate structure provided by an embodiment of the present invention;

[0059] Figure 4D A schematic diagram of a fourth rib plate structure provided by an embodiment of the present invention;

[0060] Figure 4E A schematic diagram of a fifth rib plate structure provided by an embodiment of the present invention;

[0061] Figure 5 A schematic diagram of the structure of an air intake pipe and a cooling water pipe provided in an embodiment of the present invention;

[0062] Figure 6 A schematic flow chart of a method for controlling a ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator provided in an embodiment of the present invention;

[0063] Figure 7 A schematic flow chart of a method for controlling a ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator in a first case provided by an embodiment of the present invention;

[0064] Figure 8 A schematic flow chart of a method for controlling a ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator in a second case provided by an embodiment of the present invention;

[0065] Among them, ribs 1, insulation layer 2, air intake pipe 3, cooling water pipe 4, vent pipe 5, fan 6, vent hole 101, ventilation gap 102, air intake valve 301, cooling water valve 401, atomizing nozzle 402, inner arc plate insulation layer 201, side plate insulation layer 202, annular beam 8, outer arc plate 801, nano thermal insulation board 701, second ceramic fiber blanket layer 702, second ceramic fiber module layer 703. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] In practical applications, a cylindrical horizontal electrostatic precipitator is generally composed of multiple electric fields connected in series, and the electric fields are supported by an annular beam. The annular beam can not only play the structural support role of the beam, but also can be used to arrange other corresponding structural components of the electrostatic precipitator on the annular beam.

[0068] At present, cylindrical horizontal electrostatic precipitators are all insulated externally due to the low operating temperature. The flue gas is in direct contact with the inner side of the ring beam. Without considering the temperature exchange with the external environment, the equipment shell is equal to the flue gas temperature. Under high-temperature flue gas conditions, the ring beam heats up rapidly. The material of the ring beam is generally common carbon steel Q245R or Q345R. When the temperature is greater than 300°C, the allowable stress will be significantly reduced, the expansion will increase, and the ring beam will have the risk of failure.

[0069] Furthermore, the entire ring beam is circular, and the anode suspension beam support seats are arranged in order on the upper side wall and welded to the side wall. When the temperature inside the equipment is high, the temperature will be transferred to the anode suspension beam support seat along with the anode system and the anode suspension beam, and then transferred to the side wall of the ring beam. Due to the setting of the rib plate, multiple dead cavities will appear, which has little effect in low temperature environment. In high temperature environment, the heat conduction of the ring beam will cause heat concentration in the dead cavity, affecting the high temperature performance of the ring beam.

[0070] In order to solve the above problems, the embodiment of the present invention provides a high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam, Figure 1 A schematic diagram of the structure of an annular beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator provided in an embodiment of the present invention; Figure 2 A schematic diagram of the thermal insulation layer provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of the thermal insulation layer provided in an embodiment of the present invention; Figure 4A A schematic diagram of a first rib plate structure provided in an embodiment of the present invention; Figure 4B A schematic diagram of a second rib plate structure provided by an embodiment of the present invention; Figure 4C A schematic diagram of a third rib plate structure provided by an embodiment of the present invention; Figure 4D A schematic diagram of a fourth rib plate structure provided by an embodiment of the present invention; Figure 4E A schematic diagram of a fifth rib plate structure provided by an embodiment of the present invention; Figure 5 The schematic diagram of the structure of the air intake pipe and the cooling water pipe provided in the embodiment of the present invention; Figure 1 to Figure 5 , a detailed introduction is given to the annular beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator provided in an embodiment of the present invention.

[0071] Specifically, the annular beam 8 mainly includes: a rib plate 1, a thermal insulation layer 2, a temperature sensor, an air intake duct 3 and the like.

[0072] The annular beam 8 includes a cavity formed by an inner arc plate, two side ring plates, and an outer arc plate 801. In the prior art, since the rib plate 1 is used as a rib plate of the annular beam 8, the most important function is to ensure the rigidity of the annular beam 8. Therefore, the rib plate 1 is usually a whole plate, and a dead cavity is formed inside, and gas cannot flow. In the embodiment of the present invention, in order to solve the above problem, a vent hole 101 is provided on the rib plate 1, and the air flow in the cavity of the annular beam 8 can flow through the vent hole 101, thereby preventing a large amount of hot air flow from existing locally, and solving the problem of heat concentration caused by the dead cavity without reducing the strength of the rib plate 1.

[0073] In practical applications, the annular beam 8 includes an inner arc plate, an outer arc plate 801, and side ring plates on both sides of the inner arc plate and the outer arc plate 801. In the embodiment of the present invention, except that the outer arc plate 801 is not provided with the insulation layer 2, the insulation layer 2 is provided on the inner arc plate to form the inner arc plate insulation layer 201, and at the same time, the insulation layer 2 is also provided on the side ring plates on both sides to form the side ring plate insulation layer 202. By providing the above insulation layer 2, it is possible to prevent the heat from the inside of the device from being transferred to the cavity of the annular beam 8.

[0074] In practical applications, the anode suspension beam support seats are arranged in order on the side walls of the upper half of the annular beam 8 and welded together with the side walls. When the temperature inside the equipment is high, the temperature will be transferred to the anode suspension beam support seat along with the anode system and the anode suspension beam, transferred to the side walls of the annular beam 8, and then transferred to the cavity of the annular beam 8. In order to monitor the internal temperature of the cavity of the annular beam 8 in real time, preferably, multiple temperature sensors are arranged on the side ring plates on both sides of the annular beam 8. The temperature of the side ring plates of the annular beam 8 can be determined by the temperature sensors.

[0075] Furthermore, when the cavity temperature of the annular beam 8 increases, in order to cool the cavity of the annular beam 8, preferably, an air intake duct 3 is further included, the outlet of which is arranged below the annular beam 8, for charging cooling air into the interior of the annular beam 8, thereby cooling the cavity of the annular beam 8;

[0076] The embodiment of the present invention provides an annular beam 8. When the internal temperature of the equipment is high, the internal temperature of the equipment will be transferred to the side wall of the annular beam 8 along with the anode system and the anode suspension beam. In order to avoid the problem of performance degradation of the annular beam 8 due to high temperature, an inner arc plate insulation layer 201 is provided on the contact surface between the annular beam 8 and the inside of the equipment, which performs internal thermal insulation on the annular beam 8 and reduces the heat conducted to the annular beam 8, thereby meeting the requirements of high-temperature use; furthermore, in order to solve the problem of heat concentration caused by the presence of dead cavity in the annular beam 8 due to heat conduction, on the one hand, the rib plate 1 is improved, and air vents 101 are provided on the rib plate 1, which can solve the problem of dead cavity inside the rib plate; on the other hand, a temperature sensor is provided in the annular beam 8, and the controller can control the air intake pipe and the cooling water pipe to ventilate and cool the annular beam 8 internally according to the temperature determined by the temperature sensor, thereby taking away the hot gas in the cavity of the annular beam 8, reducing the overall temperature of the annular beam 8, and improving the safety performance of the annular beam 8. The annular beam 8 can solve the problem that the existing dust collector annular beam 8 is used in a high temperature environment, the heat dissipation is not timely, and dead cavity is easily formed, which leads to safety hazards of the annular beam 8.

[0077] Furthermore, in order to improve the cooling efficiency, a cooling water pipe 4 is provided, the outlet of which is provided on the air intake pipe 3 , for filling cooling spray into the interior of the annular beam 8 through the air intake pipe 3 .

[0078] In practical applications, in order to better cool down, the annular beam 8 is divided into two left and right semi-annular beams, and the openings of a pair of semi-annular beams are in contact with each other to form the annular beam 8. It should be noted that when the openings of the two semi-annular beams are in contact with each other to form the annular beam 8, the bottom opening of each semi-annular beam is closed, and the top opening of each semi-annular beam can be closed or open.

[0079] When the top openings of the two semi-ring beams are closed, the two semi-ring beams can be respectively provided with a set of air intake ducts 3, and correspondingly, a vent pipe 5 is also respectively provided at the top thereof. In this case, each set of air intake ducts 3 corresponds to a fan 6, and each fan 6 is electrically connected to the controller. The controller can control the two fans 6 separately to perform separate temperature reduction control on the two semi-ring beams. Furthermore, the two semi-ring beams can share a set of air intake ducts 3, and correspondingly, a vent pipe 5 is also respectively provided at the top thereof. In this case, a set of air intake ducts 3 corresponds to a fan 6, and the fan 6 is electrically connected to the controller. The controller can perform simultaneous temperature reduction control on the two semi-ring beams by controlling the fan 6.

[0080] When the top openings of the two semi-ring beams are open, the two semi-ring beams can be respectively provided with a set of air intake ducts 3. Since the top ends of the semi-ring beams are open, the two semi-ring beams share a vent pipe 5. In this case, each set of air intake ducts 3 corresponds to a fan 6, and each fan 6 is electrically connected to the controller. The controller can control the two fans 6 separately to perform separate temperature reduction control on the two semi-ring beams. Furthermore, the two semi-ring beams can share a set of air intake ducts 3. Since the top ends of the semi-ring beams share a vent pipe 5, in this case, one set of air intake ducts 3 corresponds to a fan 6, and the fan 6 is electrically connected to the controller. The controller can perform simultaneous temperature reduction control on the two semi-ring beams by controlling the fans 6.

[0081] It should be noted that when two half ring beams share a set of air intake ducts 3, the corresponding fan 6 has a larger model, and when two half ring beams are respectively provided with a set of air intake ducts 3, the corresponding fan 6 has a smaller model. In the embodiment of the present invention, the specific model of the fan 6 is not limited.

[0082] In actual applications, an inlet of the air intake duct 3 is arranged at the bottom of each semi-ring beam, and the inlet of the air intake duct 3 is connected to the outlet of the air intake duct 3. Furthermore, a cooling water duct 4 is also included, and the outlet of the cooling water duct 4 is also arranged on the air intake duct 3, that is, cooling air and cooling water can be transported to the lower part of the semi-ring beam through the air intake duct 3. In actual applications, the cooling air or cooling water can take away the heat in the cavity of the semi-ring beam when rising in the cavity of the semi-ring beam, and finally be discharged from the top of the cavity of the semi-ring beam.

[0083] Furthermore, an air intake valve 301 is also provided on the air intake pipe 3, and the air intake valve 301 is electrically connected to the controller for controlling the opening or closing of the air intake valve 301 through the controller; correspondingly, a cooling water valve 401 is also provided on the cooling water pipe 4, and the cooling water valve 401 is electrically connected to the controller, and the controller controls the opening or closing of the cooling water valve 401, and further controls the opening amount of the cooling water valve 401, that is, controls the flow rate of the cooling spray entering the cavity of the semi-ring beam.

[0084] In the embodiment of the present invention, an inner arc plate insulation layer 201 and a side ring plate insulation layer 202 are respectively provided on the inner arc plate and the side ring plates on both sides included in the semi-ring beam, and the temperature inside the cavity of the semi-ring beam is significantly reduced; in actual applications, the outer arc plate 801 of the semi-ring beam is close to the external environment and has good heat dissipation, so the heat inside the cavity of the semi-ring beam mainly comes from the heat transferred by the side ring plates on both sides, which in turn heats the gas in the cavity of the semi-ring beam and increases the temperature in the entire cavity. Preferably, a plurality of first temperature sensors are respectively provided on the side ring plates on both sides of the semi-ring beam, and the first temperature of the side ring plates is determined by the first temperature sensors.

[0085] Furthermore, a second temperature sensor is provided on the vent pipe 5, and a second temperature of the gas from the cavity of the semi-ring beam is determined by the second temperature sensor.

[0086] In practical applications, since the top opening of the semi-ring beam can be closed or open, the vent pipe 5 is arranged on the annular beam 8 composed of two semi-ring beams. In one way, when the inlet of the vent pipe 5 is connected to the cavity outlets of the two semi-ring beams respectively, two second temperature sensors are respectively arranged on the vent pipe 5, and the two second temperature sensors are respectively used to determine the second temperature of the gas discharged from each semi-ring beam cavity; in another way, when the inlet of the vent pipe 5 is only connected to the cavity outlet of one semi-ring beam, only one second temperature sensor is arranged on the vent pipe 5, and the second temperature sensor is used to determine the second temperature of the gas discharged from the cavity of the semi-ring beam.

[0087] In an embodiment of the present invention, the controller is electrically connected to a plurality of first temperature sensors and a plurality of second temperature sensors, respectively, and the first temperature sensors and the second temperature sensors feed back the first temperature and the second temperature to the controller through different lines, respectively.

[0088] It should be noted that, since there are multiple first temperature sensors electrically connected to the controller, when the controller receives different first temperatures fed back by the first temperature sensors, the controller selects the highest temperature from the multiple first temperatures as the first temperature. Since the second temperature sensors provided on the vent pipe 5 correspond to a semi-ring beam respectively, the second temperature fed back to the controller by the second temperature sensor respectively represents the second temperature of the gas discharged from each semi-ring beam cavity.

[0089] For example, an atomizing nozzle 402 is also included. A plurality of atomizing nozzles 402 surround the outlet of the cooling water pipe 4 and are evenly arranged on the outlet of the cooling water pipe 4 to atomize the cooling water from the cooling water pipe 4 .

[0090] For example, a drain valve is also included, which is arranged at the lowest end of the air intake pipe 3. In actual application, a drain pipeline is arranged at the lowest point of the air intake pipe 3 and connected to the drain valve to prevent water accumulation due to excessive water spraying and the airflow failing to carry away all the atomized water.

[0091] In the embodiment of the present invention, in order to solve the problem of dead space formed inside the cavity due to the rib plate 1 being provided inside the cavity, a vent hole 101 or a vent gap 102 is provided on the rib plate 1 .

[0092] Specifically, the number of the vent holes 101 may include multiple ones, which are respectively arranged on both sides of the rib plate 1. In one case, Figure 4A As shown, a plurality of vent holes 101 are respectively arranged on the upper and lower sides of the rib plate 1; in another case, as Figure 4BAs shown, a plurality of vent holes 101 are respectively arranged on the left and right sides of the rib plate 1. It should be noted that in the embodiment of the present invention, the specific shapes of the plurality of vent holes arranged on the two sides of the rib plate 1 are not specifically limited.

[0093] Specifically, when the number of the vent hole 101 is one, it is arranged at the middle position of the rib plate 1. The shape of the vent hole arranged at the middle position of the rib plate 1 can be as follows: Figure 4C The rectangular hole shown may also be a circular hole. In the embodiment of the present invention, the specific shape of the vent hole arranged in the middle position of the rib plate 1 is not limited.

[0094] Specifically, the ventilation gap 102 may include two, which are respectively arranged on both sides of the rib plate 1. In one case, Figure 4D As shown, two ventilation gaps 102 are respectively arranged on the upper and lower sides of the rib plate 1; in another case, as Figure 4E As shown, two ventilation gaps 102 are respectively arranged on the left and right sides of the rib plate 1 .

[0095] In practical applications, multiple vents 101 or ventilation gaps 102 are provided on both sides of the rib plate 1 to ensure that the airflow passes through from both sides. In the rib plate 1 of this structure, the airflow is directed to both sides of the cavity of the annular beam 8. When the airflow passes through, the flow velocity on both sides of the cavity is increased, and the heat transferred from the anode suspension beam support seat is better taken away, which is conducive to heat dissipation. A vent hole 101 is provided in the middle of the rib plate 1 to ensure that the airflow passes through the middle. The strength of the rib plate 1 of this structure is not reduced, and a large amount of airflow passes through. The airflow passes through the middle, the flow velocity is not high, but the resistance is low, and the air source requirement is small.

[0096] For example, the thermal insulation layer 2 provided in the embodiment of the present invention includes a nano thermal insulation board 701, a second ceramic fiber blanket layer 702, and a second ceramic fiber module layer 703; because the thermal insulation layer 2 is arranged on the inner arc board to form the inner arc board thermal insulation layer 201, and the thermal insulation layer 2 is also arranged on the side ring boards on both sides to form the side ring board thermal insulation layer 202. Therefore, the arrangement of the nano thermal insulation board 701, the second ceramic fiber blanket layer 702, and the second ceramic fiber module layer 703 can include the following two ways.

[0097] One way: the nano thermal insulation board 701 is attached to the surface of the inner arc board, the second ceramic fiber blanket layer 702 is attached to the nano thermal insulation board 701, and the second ceramic fiber module layer 703 is attached to the second ceramic fiber blanket layer 702; another way: the nano thermal insulation board 701 is attached to the surface of the side ring board, the second ceramic fiber blanket layer 702 is attached to the nano thermal insulation board 701, and the second ceramic fiber module layer 703 is attached to the second ceramic fiber blanket layer 702.

[0098] Specifically, the thickness ratio of the nano thermal insulation board 701 , the second ceramic fiber blanket layer 702 , and the second ceramic fiber module layer 703 is 2:3:15.

[0099] In the embodiment of the present invention, the total insulation thickness of the insulation layer 2 arranged on the inner arc plate of the annular beam 8 is 200 mm, ensuring that the average temperature of the outer wall of the annular beam 8 is less than 50°C. The insulation materials from the cold surface to the hot surface are: 20 mm thick high-performance nano thermal insulation board 701, 30 mm thick second ceramic fiber blanket layer 702, 150 mm thick second ceramic fiber module layer 703. In order to prevent dust accumulation on the inner wall of the annular beam 8, the insulation thickness is increased on the basis of the original insulation thickness by using an insulation module, a 30° dust sliding angle is made, and a dust sliding board is laid to facilitate the collection of dust accumulation.

[0100] The second ceramic fiber blanket may include only one layer of 30 mm ceramic fiber blanket, or may include two layers of ceramic fiber blanket, with aluminum foil arranged between the two layers of ceramic fiber blanket, and then compressed to 30 mm, and a layer of aluminum foil is laid in the thermal insulation layer 2 to block water vapor and reflect heat. The second ceramic fiber module layer 703 is a module layer formed by folding the ceramic fiber blanket and then extruding and packing it. The outer surface of the second ceramic fiber module layer 703 is attached with a curing agent layer, and the curing agent is sprayed on the surface of the ceramic fiber module. After waiting for a period of time, the surface hardens to form a curing agent layer, which is used to cure the module layer.

[0101] In order to more clearly introduce the high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam provided by the embodiment of the present invention, the following is combined with Figure 6 , a high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam control method based on the above-mentioned high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam is introduced in detail, such as Figure 6 As shown, the method includes the following two steps:

[0102] Step 101, when it is determined that the cavity temperature of the annular beam is higher than a first set temperature, the air intake valve is opened to allow cooling air in the air intake duct to enter the annular beam and ventilate the annular beam through the plurality of ribs in sequence;

[0103] Step 102, when the opening time of the air intake valve exceeds the first set time and it is determined that the temperature of the cavity is higher than the first set temperature, control the cooling water valve to open by 25% so that the cooling spray in the cooling water pipeline enters the annular beam and sequentially passes through the plurality of ribs to cool the annular beam;

[0104] Step 103, when it is determined that the temperature of the annular beam cavity is higher than the second set temperature, the cooling water valve is controlled to be opened by 50%, so that the cooling spray in the cooling water pipeline enters the annular beam and cools the annular beam through the plurality of ribs in sequence;

[0105] Step 104, when it is determined that the temperature of the cavity of the annular beam is higher than the third set temperature, the cooling water valve is controlled to be opened by 75% so that the cooling spray in the cooling water pipeline enters the annular beam and cools the annular beam through the plurality of ribs in sequence;

[0106] Step 105, when the cooling water is opened for 75% of the time exceeding the second set time and the temperature of the cavity is higher than the third set temperature, the cooling water valves are controlled to be fully opened and a closing signal is sent to the front-end heat source device.

[0107] It should be noted that the control method provided in the embodiment of the present invention is executed by a controller, and the controller is electrically connected to multiple first temperature sensors, multiple second temperature sensors, a cooling water valve, an air intake valve, an alarm unit, a display unit and the front-end heat source equipment of the electrostatic precipitator.

[0108] In the embodiment of the present invention, a plurality of first temperature sensors are arranged on the side ring plates on both sides of the semi-ring beam, and are used to determine the first temperature of the side ring plates. A plurality of second temperature sensors are arranged on the vent pipe, and are used to determine the second temperature of the gas from the vent pipe. The controller is electrically connected to the plurality of first temperature sensors and the plurality of second temperature sensors, respectively, and is used to control the cooling water valve and the air intake valve according to the first temperature fed back by the first temperature sensor; or to control the cooling water valve and the air intake valve according to the second temperature fed back by the second temperature sensor; or to control the cooling water valve and the air intake valve according to the first temperature and the second temperature fed back by the first temperature sensor and the second temperature sensor at the same time.

[0109] Specifically, since the controller needs to determine how to control the cooling water valve and the intake valve based on the received first temperature and / or second temperature, three temperature ranges are preset in the controller, namely the first set temperature, the second set temperature and the third set temperature. That is, the controller compares the received first temperature and / or second temperature with the pre-set first set temperature, the second set temperature and the third set temperature to determine how to control the intake valve and the cooling water valve.

[0110] Furthermore, since the first temperature sensor is arranged on the side ring plates on both sides of the semi-ring beam, and the second temperature sensor is arranged on the vent pipe, it can be determined that the first temperature is higher than the second temperature. Based on this, in an embodiment of the present invention, three temperature ranges of two areas are preset in the controller, namely: the first temperature of the first setting area, the second temperature of the first setting area and the third temperature of the first setting area, the first temperature of the second setting area, the second temperature of the second setting area and the third temperature of the second setting area.

[0111] Specifically, the first set temperature includes the first temperature of the first set area and the first temperature of the second set area; the second set temperature includes the second temperature of the first set area and the second temperature of the second set area, and the third set temperature includes the third temperature of the first set area and the third temperature of the second set area. In actual control, because each temperature may correspond to a different preset range, when the controller receives the above feedback temperature, it is also necessary to determine the preferred level of processing according to the preset range corresponding to the temperature.

[0112] In an embodiment of the present invention, the first temperature of the first setting area and the first temperature of the second setting area have the same priority, the second temperature of the first setting area and the second temperature of the second setting area have the same priority, and the third temperature of the first setting area and the third temperature of the second setting area have the same priority; further, the priority of the third temperature of the first setting area is greater than the priority of the second temperature of the first setting area, and the priority of the second temperature of the first setting area is greater than the priority of the first temperature of the first setting area; accordingly, the priority of the third temperature of the second setting area is greater than the priority of the second temperature of the second setting area, and the priority of the second temperature of the second setting area is greater than the priority of the first temperature of the second setting area.

[0113] In an embodiment of the present invention, the controller is electrically connected to a plurality of first temperature sensors and a plurality of second temperature sensors, respectively, and is used to control the cooling water valve and the air intake valve according to the first temperature fed back by the first temperature sensor; or to control the cooling water valve and the air intake valve according to the second temperature fed back by the second temperature sensor; or to control the cooling water valve and the air intake valve according to the first temperature and the second temperature fed back by the first temperature sensor and the second temperature sensor at the same time. The above-mentioned various situations are introduced one by one as follows:

[0114] The first case, such as Figure 7 As shown, the controller controls the cooling water valve and the intake valve according to the first temperature fed back by the first temperature sensor:

[0115] Step 201, when it is determined that the first temperature is higher than the first temperature of the first set area, the controller controls to turn on the fan and the air intake valve, so that the cooling air in the air intake duct enters the annular beam and sequentially passes through the plurality of ribs to ventilate the annular beam; it should be noted that the fan will not stop after it is turned on until the device ends operation;

[0116] Step 202, when the intake valve opening time exceeds the first set time, if the first temperature drops below the first temperature of the first set area, the system operates normally;

[0117] When the intake valve opening time exceeds the first set time, and it is determined that the first temperature is still higher than the first temperature of the first set area, the cooling water valve is controlled to be opened, and the cooling water valve is only opened by 25%, so that the cooling spray in the cooling water pipeline enters the annular beam and sequentially passes through the plurality of ribs to cool the annular beam;

[0118] It should be noted that if the cooling water valve is opened, it is set to the normally open state until the equipment stops running;

[0119] Step 203, when it is determined that the first temperature is higher than the second temperature of the first set area, the cooling water valve is controlled to be opened by 50%, so that the cooling spray in the cooling water pipeline enters the annular beam and sequentially passes through the plurality of ribs to cool the annular beam; further, a system temperature abnormality signal is sent to the display unit, and a first-level alarm signal is sent to the alarm unit;

[0120] Furthermore, if after the cooling water valve is opened by 50%, the first temperature drops below the second temperature of the first set area, the cooling water valve is controlled to open and run continuously for a period of time, for example: 5-30 minutes. After that, the cooling water valve is controlled to be adjusted to 25%. At the same time, the first-level alarm is released, the system continues to run, and the controller records the duration when the cooling water valve is opened to 50%, and records the first-level alarm and temperature abnormality information.

[0121] Step 204, if it is determined that the first temperature is higher than the third temperature of the first set area, control the cooling water valve to open 75% so that the cooling spray in the cooling water pipeline enters the annular beam and sequentially passes through the plurality of ribs to cool the annular beam; further, send a system temperature abnormality signal to the display unit, and send a secondary alarm signal to the alarm unit;

[0122] Furthermore, if after the cooling water valve is opened by 75%, the first temperature drops below the second temperature of the first setting area, the cooling water valve is controlled to open and run continuously for a period of time, for example: 5-30 minutes. After that, the cooling water valve is controlled to be adjusted to 50%. At the same time, the first-level alarm is retained, and the system continues to run until the first temperature drops below the first temperature of the first setting area, the cooling water valve is controlled to be adjusted to 25%, and the controller records the duration of the cooling water valve being open to 75%, the duration of being open to 50%, the first-level and second-level alarms and temperature abnormality information, and performs online inspection of the entire electrostatic precipitator system and ring beam.

[0123] Step 205, after a period of time, such as 5-30 minutes, after the entire electrostatic precipitator system and the ring beam are checked online, if the first temperature is still higher than the third temperature of the first set area, the cooling water valve is controlled to be 100% open to allow the cooling spray in the cooling water pipe to enter the ring beam and cool the ring beam in turn through multiple ribs; further, a system temperature abnormality signal is sent to the display unit, and a third-level alarm signal is sent to the alarm unit. At the same time, the controller sends a shutdown inspection signal to the display unit.

[0124] Furthermore, if after the cooling water valve is opened 100%, when the first temperature drops below the third temperature of the first setting area, the cooling water valve is controlled to open and run continuously for a period of time, for example: 5-30 minutes. After that, the cooling water valve is controlled to be adjusted to 75%. At the same time, the second-level alarm is retained, and the system continues to run until the first temperature drops below the second temperature of the first setting area, the cooling water valve is controlled to be adjusted to 50%. At the same time, the first-level alarm is retained, and the system continues to run until the first temperature drops below the first temperature of the first setting area, the cooling water valve is controlled to be adjusted to 25%, and the controller records the duration when the cooling water valve is opened to 100%, the duration when the cooling water valve is opened to 75%, and the duration when the cooling water valve is opened to 50%, records the first-level, second-level, and third-level alarms and temperature abnormality information, and performs online inspections of the entire electrostatic precipitator system and ring beam.

[0125] Furthermore, if the first temperature is still higher than the third temperature in the first set area after the cooling water valve is opened 100%, the controller sends a shutdown signal to the front-end heat source device until the system stops running.

[0126] It should be noted that the front-end heat source equipment here can be industrial and civil kilns such as combustion furnaces, pyrolysis furnaces, gasification furnaces, mineral phosphorus furnaces, calcining furnaces, electric heating furnaces, gas furnaces, etc., or indirect heating equipment such as heat exchangers. In the embodiments of the present invention, the front-end heat source equipment is not specifically limited.

[0127] The second case, such as Figure 8 As shown, the controller controls the cooling water valve and the intake valve according to the second temperature fed back by the second temperature sensor:

[0128] Step 301, when it is determined that the second temperature is higher than the first temperature of the second set area, the controller controls to turn on the fan and the air intake valve, so that the cooling air in the air intake duct enters the annular beam and sequentially passes through the plurality of ribs to ventilate the annular beam; it should be noted that the fan will not stop after being turned on until the device ends operation;

[0129] Step 302, when the intake valve opening time exceeds the first set time, if the second temperature drops below the first temperature of the second set area, the system operates normally;

[0130] When the intake valve opening time exceeds the first set time, and it is determined that the second temperature is still higher than the first temperature of the second set area, the cooling water valve is controlled to be opened, and the cooling water valve is only opened by 25%, so that the cooling spray in the cooling water pipeline enters the annular beam and sequentially passes through multiple ribs to cool the annular beam;

[0131] It should be noted that if the cooling water valve is opened, it is set to the normally open state until the equipment stops running;

[0132] Step 303, when it is determined that the second temperature is higher than the second temperature of the second set area, the cooling water valve is controlled to be opened by 50%, so that the cooling spray in the cooling water pipeline enters the annular beam and sequentially passes through the plurality of ribs to cool the annular beam; further, a system temperature abnormality signal is sent to the display unit, and a first-level alarm signal is sent to the alarm unit;

[0133] Furthermore, if after the cooling water valve is opened by 50%, the second temperature drops below the second temperature of the second set area, the cooling water valve is controlled to open and run continuously for a period of time, for example: 5-30 minutes. After that, the cooling water valve is controlled to be adjusted to 25%. At the same time, the first-level alarm is released, the system continues to run, and the controller records the duration when the cooling water valve is opened to 50%, and records the first-level alarm and temperature abnormality information.

[0134] Step 304, if it is determined that the second temperature is higher than the third temperature of the second set area, control the cooling water valve to open 75% so that the cooling spray in the cooling water pipe enters the annular beam and sequentially passes through the plurality of ribs to cool the annular beam; further, send a system temperature abnormality signal to the display unit, and send a secondary alarm signal to the alarm unit;

[0135] Furthermore, if after the cooling water valve is opened to 75%, the second temperature drops below the second temperature of the second set area, the cooling water valve is controlled to open and run continuously for a period of time, for example: 5-30 minutes. After that, the cooling water valve is controlled to be adjusted to 50%. At the same time, the first-level alarm is retained, and the system continues to run until the second temperature drops below the first temperature of the second set area, and the cooling water valve is controlled to be adjusted to 25%. The controller records the duration of the cooling water valve being open to 75%, the duration of being open to 50%, the first-level and second-level alarms and temperature abnormality information, and performs online inspection of the entire electrostatic precipitator system and ring beam.

[0136] Step 305, after a period of time, such as 5-30 minutes, after the entire electrostatic precipitator system and the ring beam are checked online, if the second temperature is still higher than the third temperature of the second set area, control all cooling water valves to open so that the cooling spray in the cooling water pipe enters the ring beam and cools the ring beam in turn through multiple ribs; further, send a system temperature abnormality signal to the display unit, send a third-level alarm signal to the alarm unit, and at the same time, the controller sends a shutdown inspection signal to the display unit.

[0137] Furthermore, if after a period of time, such as 5-30 minutes, the cooling water valve is opened 100%, if the second temperature drops below the third temperature of the second setting area, the cooling water valve is controlled to open and run continuously for a period of time, for example: 5-30 minutes. After that, the cooling water valve is controlled to be adjusted to 75%. At the same time, the second-level alarm is retained, and the system continues to run until the second temperature drops below the second temperature of the second setting area, the cooling water valve is controlled to be adjusted to 50%. At the same time, the first-level alarm is retained, and the system continues to run until the second temperature drops below the first temperature of the second setting area, the cooling water valve is controlled to be adjusted to 25%, and the controller records the duration of the cooling water valve being opened to 100%, the duration of the cooling water valve being opened to 75%, and the duration of the cooling water valve being opened to 50%, records the first-level, second-level, and third-level alarms and temperature abnormality information, and performs online inspections of the entire electrostatic precipitator system and ring beam.

[0138] Furthermore, if the second temperature is still higher than the third temperature in the second set area after the cooling water valve is opened 100%, the controller sends a shutdown signal to the front-end heat source device until the system stops running.

[0139] It should be noted that the front-end heat source equipment here can be industrial and civil kilns such as combustion furnaces, pyrolysis furnaces, gasification furnaces, mineral phosphorus furnaces, calcining furnaces, electric heating furnaces, gas furnaces, etc., or indirect heating equipment such as heat exchangers. In the embodiments of the present invention, the front-end heat source equipment is not specifically limited.

[0140] In the third case, in the first and second cases mentioned above, the controller only controls the temperature signal fed back by the first temperature sensor or the second temperature sensor respectively, while in actual applications, the controller will also control the intake valve and the cooling water valve according to the temperature signals fed back by the first temperature sensor and the second temperature sensor at the same time.

[0141] Since the controller may receive temperature signals fed back by the first temperature sensor and the second temperature sensor at the same time. Therefore, when the controller controls according to the first temperature and the second temperature, it mainly determines the execution order based on the priority, and the priority order includes: the priority of the third temperature in the first setting area is greater than the priority of the second temperature in the first setting area, and the priority of the second temperature in the first setting area is greater than the priority of the first temperature in the first setting area; accordingly, the priority of the third temperature in the second setting area is greater than the priority of the second temperature in the second setting area, and the priority of the second temperature in the second setting area is greater than the priority of the first temperature in the second setting area. At the same time, the first temperature in the first setting area and the first temperature in the second setting area have the same priority, the second temperature in the first setting area and the second temperature in the second setting area have the same priority, and the third temperature in the first setting area and the third temperature in the second setting area have the same priority.

[0142] In practical applications, the temperature of the first setting area is higher than that of the second setting area. For example, the first temperature of the first setting area is between 130-150°C; the second temperature of the first setting area is between 170-200°C, and the third temperature of the first setting area is between 220-250°C; the first temperature of the second setting area is between 70-80°C; the second temperature of the second setting area is between 90-100°C, and the third temperature of the second setting area is between 110-120°C. According to the above description, the temperature of the first setting area is higher than that of the second setting area.

[0143] In one way, if the controller receives temperature signals fed back by the first temperature sensor and the second temperature sensor at the same time, the controller needs to first determine whether the two temperatures correspond to the same priority level. If the two temperatures correspond to the same priority level, the controller further performs corresponding operations based on the set temperature ranges corresponding to the two temperatures according to the above two situations.

[0144] If the priorities corresponding to the two temperatures are different, the controller selects the temperature with a higher priority from the two temperatures, and then performs the corresponding operation according to the set temperature range corresponding to the temperature.

[0145] In one way, if the controller has performed an operation, such as step 202 in the above process, if the second temperature fed back by the second temperature sensor is greater than the second temperature of the second setting area, since the priority of the second temperature of the second setting area is greater than the priority of the first temperature of the first setting area, the controller needs to operate according to the operation mode corresponding to the second temperature of the second setting area, that is, the controller controls the cooling water valve to open to 50%, further, sends a system temperature abnormality signal to the display unit, and sends a first-level alarm signal to the alarm unit. The subsequent operation of the controller can refer to step 303.

[0146] It should be noted that in the third case, when the controller controls the intake valve and the cooling water valve, it still controls the first temperature and the second temperature based on the feedback of the first temperature sensor and the second temperature sensor. However, unlike the first and second cases mentioned above, at this time, when the controller receives the first temperature and the second temperature, it is also necessary to determine the temperature ranges corresponding to the first temperature and the second temperature. For example, when the first temperature of the first setting area is between 130-150°C, the second temperature of the first setting area is between 170-200°C, and the third temperature of the first setting area is between 220-250°C, if the first temperature this time is 210°C, it can be determined that the first temperature is greater than the second temperature of the first setting area, and its corresponding priority is the second level; when the first temperature of the second setting area is between 70-80°C, the second temperature of the second setting area is between 90-100°C, and the third temperature of the second setting area is between 110-120°C, if the second temperature this time is 75°C, it can be determined that the second temperature is between the first temperature of the second setting area, and it does not have priority. Therefore, the controller may determine to control the cooling water valve to be opened by 50% according to the priorities corresponding to the first temperature and the second temperature. For specific execution steps, reference may be made to step 203 .

[0147] In an embodiment of the present invention, the specific execution method included in the third situation is similar to the above-mentioned steps 201-205, or steps 301-305. The only difference is that when the controller receives the temperature feedback from the first temperature sensor and the second temperature sensor, it needs to judge their temperature.

[0148] In summary, an embodiment of the present invention provides a ring beam and a control method for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator, including: a rib plate, which is arranged inside the ring beam and has air holes arranged on it to allow air to flow inside the ring beam; a thermal insulation layer, which is arranged on the side of the inner arc plate included in the ring beam away from the outer arc plate; a temperature sensor, which is arranged in the ring beam and is used to determine the cavity temperature of the ring beam; an air intake duct, whose outlet is arranged below the ring beam and is used to fill cooling air into the inside of the ring beam; a cooling water duct, whose outlet is arranged on the air intake duct and is used to fill cooling spray into the inside of the ring beam. The embodiment of the present invention provides a ring beam. In order to avoid the problem of performance degradation of the ring beam due to high temperature, a heat insulation layer is set inside the ring beam, which performs internal heat insulation on the ring beam and reduces the heat conducted to the ring beam, so as to meet the requirements of high temperature use; the high temperature inside the equipment will still be transmitted to the side wall of the ring beam along the contact point between the anode suspension beam and the side wall of the ring beam, and the ring beam will still have the problem of local high temperature on the side wall and overall temperature rise; furthermore, in order to solve the problem of heat concentration caused by the dead cavity of the ring beam due to heat conduction, on the one hand, the rib plate is improved, and vents are set on the rib plate, which can solve the problem of dead cavity inside; on the other hand, a temperature sensor is set on the side wall and the top of the ring beam, and the controller can control the air intake pipe and the cooling water pipe to ventilate and cool the ring beam internally according to the temperature determined by the temperature sensor, so as to carry the hot gas inside the ring beam, reduce the overall temperature of the ring beam, and improve the safety performance of the ring beam. The ring beam can solve the problem that the existing dust collector ring beam is used in a high temperature environment, the heat dissipation is not timely, and the dead cavity is easy to appear, resulting in the safety hazard of the ring beam.

[0149] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0150] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator, characterized in that: include: The rib plate is arranged inside the annular beam and has ventilation holes thereon to allow air to flow inside the annular beam; A heat-insulating layer is arranged on a side of the inner arc plate of the annular beam away from the outer arc plate; a temperature sensor, disposed in the annular beam, for determining a cavity temperature of the annular beam; An air intake duct, the outlet of which is arranged below the annular beam and is used to charge cooling air into the interior of the annular beam; The annular beam is composed of two half-annular beams, each of which includes an inner arc plate, an outer arc plate, and side ring plates arranged on both sides of the inner arc plate and the outer arc plate, and the openings of the two half-annular beams are in contact to form the annular beam; A semi-ring beam inlet is arranged at the bottom of each semi-ring beam, and the semi-ring beam inlet is communicated with the outlet of the air intake duct; An air intake duct connected to an inlet of a semi-ring beam, which is connected to a fan, or an air intake duct connected to the inlets of two semi-ring beams, which are connected to a fan; It also includes cooling water pipelines, controllers, air intake valves, and cooling water valves; The cooling water pipe outlet is arranged on the air inlet pipe, and is used to fill the interior of the annular beam with cooling spray; Also includes a vent pipe, a first temperature sensor and a second temperature sensor; A plurality of first temperature sensors are arranged on the side ring plate included in each of the semi-ring beams, and a second temperature sensor is arranged on the vent pipe; Also included are multiple misting nozzles and steam traps.

2. The high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam according to claim 1, characterized in that: The air intake valve is arranged on the air intake duct and is used to open or close the cooling air entering the cavity of the semi-ring beam; The cooling water valve is arranged on the cooling water pipeline and is located between the air intake valve and the air intake pipeline inlet, and is used to control the flow rate of the cooling spray entering the cavity of the semi-ring beam; The controller is electrically connected to the air intake valve and the cooling water valve respectively.

3. The high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam according to claim 2, characterized in that: The first temperature sensor is used to determine a first temperature of the side ring plate; The vent pipe is arranged at the top of the semi-ring beam, and when its inlet is respectively connected with the cavity outlets of the two semi-ring beams, two second temperature sensors are respectively arranged on the vent pipe, respectively used to determine the second temperature of the gas discharged from each semi-ring beam cavity; or, when its inlet is only connected with the cavity outlet of one semi-ring beam, one second temperature sensor is arranged on the vent pipe, used to determine the second temperature of the gas discharged from the cavity of the semi-ring beam; The controller is electrically connected to the first temperature sensor and the second temperature sensor respectively.

4. The high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam according to claim 1, characterized in that: A plurality of atomizing nozzles surround the outlet of the cooling water pipeline and are evenly arranged at the outlet of the cooling water pipeline to atomize the cooling water; The drain valve is arranged at the lowest end of the air intake pipeline and is used to drain the accumulated water in the air intake pipeline.

5. The high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam according to claim 1, characterized in that: The rib plate is rectangular; Multiple ventilation holes are evenly arranged on both sides; or A rectangular vent hole is provided in the middle; or Ventilation gaps are provided on both sides.

6. The high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam according to claim 1, characterized in that: The thermal insulation layer comprises a nano thermal insulation board, a second ceramic fiber blanket layer and a second ceramic fiber module layer; The nano thermal insulation board is attached to the inner surfaces of the inner arc board and the side ring board, the second ceramic fiber blanket layer is attached to the nano thermal insulation board, and the second ceramic fiber module layer is attached to the second ceramic fiber blanket layer.

7. The high-temperature cylindrical horizontal high-temperature electrostatic precipitator ring beam according to claim 6, characterized in that: The second ceramic fiber blanket includes one layer of ceramic fiber blanket, or two layers of ceramic fiber blanket, and an aluminum foil layer is arranged between the two layers of ceramic fiber blanket; The second ceramic fiber module layers are all module layers formed by folding a ceramic fiber blanket and then extruding and packaging it, and a curing agent layer is attached to the outer surface of the second ceramic fiber module layer.

8. A method for controlling a ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator, characterized in that: The ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator according to any one of claims 1 to 7 comprises: When it is determined that the cavity temperature of the annular beam is higher than the first set temperature, the air intake valve is opened to allow the cooling air in the air intake duct to enter the annular beam and ventilate the annular beam through the plurality of ribs in sequence; When the air intake valve opening time exceeds the first set time and it is determined that the temperature of the cavity is higher than the first set temperature, the cooling water valve is controlled to open by 25% so that the cooling spray in the cooling water pipeline enters the annular beam and sequentially passes through the plurality of ribs to cool the annular beam; When it is determined that the temperature of the annular beam cavity is higher than the second set temperature, the cooling water valve is controlled to open 50%; When it is determined that the temperature of the annular beam cavity is higher than the third set temperature, the cooling water valve is controlled to open 75%; When the cooling water is opened for 75% of the time exceeding the second set time and the temperature of the cavity is higher than the third set temperature, the cooling water valves are controlled to be fully opened and a closing signal is sent to the front-end heat source equipment.

9. The method for controlling the ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator according to claim 8, characterized in that: The cavity temperature of the annular beam includes a first temperature of the side ring plate and a second temperature of the gas; The annular beam is composed of two half-annular beams, each of which includes an inner arc plate, an outer arc plate, and side ring plates arranged on both sides of the inner arc plate and the outer arc plate, and a plurality of first temperature sensors are arranged on the side ring plates to determine the first temperature of the side ring plates; The vent pipe is arranged at the top of the annular beam. When its inlet is respectively connected with the cavity outlets of the two semi-annular beams, two second temperature sensors are respectively arranged on the vent pipe, which are respectively used to determine the second temperature of the gas discharged from the cavity of each semi-annular beam; or, when its inlet is only connected with the cavity outlet of one semi-annular beam, one second temperature sensor is arranged on the vent pipe, which is used to determine the second temperature of the gas discharged from the cavity of the semi-annular beam.

10. The method for controlling the ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator according to claim 9, characterized in that: The first set temperature includes the first temperature of the first set area and the first temperature of the second set area; the second set temperature includes the second temperature of the first set area and the second temperature of the second set area; the third set temperature includes the third temperature of the first set area and the third temperature of the second set area; When it is determined that the first temperature is higher than the first temperature of the first setting area, the air intake valve is opened to allow the cooling air in the air intake duct to enter the annular beam, and the annular beam is ventilated in sequence through multiple ribs; when the air intake valve opening time exceeds the first setting time, and when it is determined that the first temperature is higher than the first temperature of the first setting area, the cooling water valve is controlled to be opened by 25%, so that the cooling spray in the cooling water duct enters the annular beam, and the annular beam is cooled in sequence through multiple ribs; when it is determined that the first temperature is higher than the second temperature of the first setting area, the cooling water valve is controlled to be opened by 50%; when it is determined that the first temperature is higher than the third temperature of the first setting area, the cooling water valve is controlled to be opened by 75%; when the cooling water is opened for 75% of the time that exceeds the second setting time, and the first temperature is higher than the third temperature of the first setting area, the cooling water valve is controlled to be fully opened, and a closing signal is sent to the front-end heat source equipment; or When it is determined that the second temperature is higher than the first temperature of the second setting area, the air intake valve is opened; so that the cooling air in the air intake duct enters the annular beam, and the annular beam is ventilated in sequence through multiple ribs; when the opening time of the air intake valve exceeds the first setting time, and when it is determined that the second temperature is higher than the first temperature of the second setting area, the cooling water valve is controlled to be opened by 25%, so that the cooling spray in the cooling water duct enters the annular beam, and the annular beam is cooled in sequence through multiple ribs; when it is determined that the second temperature is higher than the second temperature of the second setting area, the cooling water valve is controlled to be opened by 50%; when it is determined that the second temperature is higher than the third temperature of the second setting area, the cooling water valve is controlled to be opened by 75%; when the cooling water is opened for 75% of the time that exceeds the second setting time, and the second temperature is higher than the third temperature of the second setting area, the cooling water valve is controlled to be fully opened, and a closing signal is sent to the front-end heat source equipment.

11. The method for controlling the ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator according to claim 10, characterized in that: The first temperature of the first setting area and the first temperature of the second setting area have the same priority, the second temperature of the first setting area and the second temperature of the second setting area have the same priority, and the third temperature of the first setting area and the third temperature of the second setting area have the same priority; The priority of the third temperature in the first setting area is greater than the priority of the second temperature in the first setting area, and the priority of the second temperature in the first setting area is greater than the priority of the first temperature in the first setting area.

12. The method for controlling the ring beam for a high-temperature cylindrical horizontal high-temperature electrostatic precipitator according to claim 9, characterized in that: Also includes: When it is determined that the temperature of the annular beam cavity is higher than the second set temperature, it indicates that the system temperature is abnormal and turns on a first-level alarm; When it is determined that the temperature of the annular beam cavity is higher than the third set temperature, it indicates that the system temperature is abnormal and turns on the second-level alarm; When the cooling water is turned on for 75% of the time exceeding the second set time, and the temperature of the cavity is higher than the third set temperature, it prompts that the system temperature is abnormal and turns on the third level alarm.

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