70 results about "Rapping" patented technology

The embodiment of the invention discloses a multi-mode-based back corona dedusting rapping control method and system, a storage medium and electronic equipment, and the method comprises the steps: obtaining real-time acoustic, electrical and optical monitoring data of high-voltage equipment, and extracting an acoustic feature sequence, an electrical distortion feature vector and an optical form feature vector after space-time calibration; inputting the three types of features into a cross-modal attention fusion network to obtain a first recognition result of a back corona state, and combining electrical and optical features to obtain a second recognition result through a back corona mechanism model; and determining a target back corona state based on the two types of results, generating a cooperative control parameter of a rapping parameter and a voltage regulating variable, and driving an execution mechanism to realize online control. The method solves the problems that in the prior art, multi-mode data are not synchronous, a single recognition mechanism is prone to misjudgment, and a control strategy lacks dynamic cooperation, accurate recognition and efficient intervention of back corona are achieved, the dust removal efficiency is improved, and energy consumption is reduced.

The invention discloses a mechanical and pneumatic double rapping type electric dust remover which comprises a cathode system, an anode system, a high-voltage power supply, a shell, a mechanical rapping device and a pneumatic rapping device. When the high-voltage power source is powered on, on one hand, the cathode system and the anode system can be matched to form an electric field, on the other hand, the cathode system can be used for ionizing air, and the cathode system and the anode system can be mechanically rapped and dedusted through mechanical rapping devices arranged on the single sides respectively. The pneumatic rapping device can conduct pneumatic rapping and ash removal on the sides, back to the mechanical rapping device, of the cathode system and the anode system, the dust removal effect is good, the occupied space is small, and the service life is long.

The utility model relates to a water-cooled rapping device, which belongs to the technical field of heat exchange and comprises an in-furnace rapping rod fixedly arranged on a tube body of a heat exchange tube bundle and a through-wall rapping rod penetrating through a furnace wall and fixedly connected with the in-furnace rapping rod. The through-wall rapping rod comprises a first upper round pipe and a first lower round pipe, the in-furnace rapping rod comprises a second upper round pipe and a second lower round pipe, the first upper round pipe penetrates through a furnace wall to be communicated with the second upper round pipe, and the first lower round pipe penetrates through the furnace wall to be communicated with the second lower round pipe; the ends, away from the through-wall rapping rod connected with the second upper round pipe and the second lower round pipe, of the second upper round pipe are communicated with each other, a water inlet is formed in the end, located outside the furnace wall, of the first lower round pipe, and a water outlet is formed in the end, located outside the furnace wall, of the first upper round pipe. Cooling water is introduced into the vibrating rod in the furnace through the water inlet, and the cooling water is led out from the water outlet outside the furnace wall after being heated, so that the temperature of the pipe wall of the vibrating rod in the furnace is reduced, the corrosion influence of high-temperature flue gas on the vibrating rod is reduced or avoided, and the service life of the vibrating rod is prolonged.

The invention discloses a waste heat boiler mechanical vibration deashing process, which is characterized in that a plurality of vibration device groups are arranged on a waste heat boiler, and a control device controls the vibration device groups to be started according to the following rule in sequence: the first vibration device group starts vibration, and stops vibration after vibration corresponds to a set time, and the second vibration device group stops vibration after vibration corresponds to a set time; then the second rapping device set starts rapping, rapping is stopped after rapping corresponds to the set time, rapping is sequentially conducted according to the sequence till the last rapping device set stops rapping, and after the last rapping device set stops rapping, an ash tank replacement time period is reserved; the period from the beginning of rapping of the first rapping device group to the end of the replacement of the ash tank is the whole rapping period, and the control device controls each rapping device group to circularly rap according to the rapping rule of the rapping period. By the adoption of the process, the service life of the waste heat boiler can be prolonged, the electricity utilization safety performance is improved, and a forklift driver transporting the ash tank can also master the time point for going to an operation area to replace the ash tank.

The invention discloses a stock bin rapping control method and system and electronic equipment, and belongs to the technical field of feeding, and the method comprises the steps that each path of rapping motor is controlled to operate with respective target working duration; the maximum target working duration is used as the reference duration, and the working current of each path of rapping motor in the reference duration is obtained in real time; judging whether the working current of each path of rapping motor exceeds a preset abnormal threshold at the end of the reference duration, and if so, acquiring the abnormal working duration of the corresponding rapping motor in an abnormal state; whether the abnormal working duration and the number of the vibrating motors in the abnormal state meet preset adjustment conditions or not is judged, and if yes, the target interval time is adjusted; and each rapping motor is controlled to execute the rapping operation of the next rapping period according to the adjusted target interval time. The vibration parameters of the vibration motor can be dynamically adjusted according to the discharging state, real-time matching of the exciting force and the rheological characteristics of materials is achieved, and normal and efficient operation of the vibration motor is guaranteed.

The invention discloses a top outer side mechanical rapping type electric dust remover which comprises a dust collecting plate, a mechanical rapping mechanism, a rapping rod, a filling mechanism and a suspension mechanism, and the dust collecting plate can be arranged in an inlet end socket in a limited amplitude shaking mode through the suspension mechanism; one end of the rapping rod is mechanically rapped by the mechanical rapping mechanism outside the inlet seal head, the other end of the rapping rod extends into the inlet seal head and transmits mechanical rapping force to the dust collection plate, the packing mechanism is sealed between the inlet seal head and the rapping rod, the space utilization rate is high, the dust removal effect is good, the service life is long, and maintenance is convenient.

The invention relates to the technical field of industrial data analysis, and discloses a self-adaptive control method and device for a rapping system based on back corona recognition, and the method comprises the steps: obtaining current data, voltage data and dust concentration data; performing feature extraction according to the current data, the voltage data and the dust concentration data to obtain an operation feature vector; performing anomaly detection according to the operation feature vector to obtain an anomaly occurrence time point; acquiring equipment operation parameters corresponding to the exception occurrence time point; performing data association according to the equipment operation parameters and the operation feature vectors to obtain an abnormal association data set; and performing parameter optimization according to the abnormal associated data set to obtain an optimal control parameter, and outputting a corresponding control instruction. The method has the following effect that the abnormal state recognition accuracy in the working process of the rapping system can be improved.

The invention discloses a pneumatic rapping ash removal efficiency optimization method under a high-ash working condition, and relates to the technical field of flue gas electrostatic precipitation, and the method comprises the steps: carrying out the time window time frequency feature extraction of a high-ash working condition rapping data set, obtaining a rapping multi-mode feature set, quantifying the rapping performance state through a rapping state evaluation algorithm, and generating a rapping comprehensive state set; constructing a double-constraint rapping optimization model based on the rapping comprehensive state set, and generating a regional rapping optimization strategy by performing optimal configuration on rapping strength parameters; an area rapping optimization strategy is executed, the marginal dust removal effect of pneumatic rapping is recognized through sound and vibration characteristics in combination with a high-ash working condition rapping data set, and a rapping execution result is obtained; and performing self-adaptive adjustment on the double-constraint rapping optimization model according to a rapping execution result, and performing ash removal performance trend analysis in combination with the rapping comprehensive state set to obtain an ash removal efficiency optimization report. By constructing the vibrating comprehensive state set, the ash removal efficiency is improved, and the unit ash removal energy consumption is reduced.

The utility model discloses a rapping device with variable rapping quality for an electric dust remover, which comprises a hammer head, shaft bodies are arranged at the front end and the rear end of the hammer head, counterweight bodies are arranged on the shaft bodies, fixing mechanisms for fixing the counterweight bodies are arranged at the free ends of the shaft bodies, a mounting groove is formed in the knocking side of the hammer head, and the hammer head is provided with a fixing mechanism for fixing the counterweight bodies. Compared with the prior art, the vibrating device has the advantages that proper vibrating force can be provided, and the vibrating requirement can be well met.

The invention provides a rapping mechanism which comprises an electric-bag dust collector frame, an anode rapping unit and a cathode rapping unit, the anode rapping unit and the cathode rapping unit are both connected to the inner wall of the electric-bag dust collector frame, the anode rapping unit is in contact with an anode plate of the electric-bag dust collector frame, and the cathode rapping unit is in contact with a cathode plate of the electric-bag dust collector frame. The cathode rapping unit is in contact with a cathode plate of the electric bag dust collector frame, the anode rapping unit is used for rapping an anode plate of the electric bag dust collector frame, and the cathode rapping unit is used for rapping a cathode plate of the electric bag dust collector frame. The anode rapping unit and the cathode rapping unit can be used for rapping the anode plate and the cathode plate respectively, the rapping effect of the anode plate and the cathode plate can be improved, namely the ash removal effect is improved, the structure is simple, various electrical equipment does not need to be used, more energy is saved, and the production and use cost of the rapping mechanism is reduced.

The utility model discloses a horizontal rapping device which comprises a linear pig casting machine rack of a linear pig casting machine and a rotating pulley of a conveying chain, rapping supports are fixedly arranged on the linear pig casting machine rack, the rapping supports are symmetrically arranged on the two sides of the conveying chain, rotating shafts are arranged on the rapping supports in a rotating connection mode, rapping shafts are arranged on the rotating shafts, and the rapping shafts are arranged on the rotating pulleys. A rapping hammer is arranged at one end of the rapping shaft, a linkage device for driving the rotating shaft to rotate is fixedly arranged on the rotating shaft, and the linkage device and the rotating pulley are in linkage rotation; the device drives the rapping hammer to work through mechanical linkage rotation of the linkage device and the rotating pulley, and the whole process is mechanical action and automatic rapping without control, so that an electric or pneumatic system is prevented from being newly added, the problems that the electric or pneumatic system is easy to break down, the maintenance labor cost is high, the accessory expense is high, the energy consumption is high and the like are solved, and the working efficiency is improved. And production cost control is not facilitated.

This invention provides a rapping dust removal control method and system, belonging to the field of electrostatic precipitator technology. The method includes: responding to a start signal, performing equipment initialization, and collecting emission parameters of the electrostatic precipitator after initialization; simulating emission conditions based on the emission parameters to obtain simulated operating conditions; determining the deviation between the simulated operating conditions and a preset optimal operating condition, and triggering a control command when the deviation exceeds a preset deviation threshold; executing the control command, generating control parameters based on the deviation value, and performing electrostatic precipitator control based on the control parameters. This invention solves the problem of existing electrostatic precipitator rapping solutions being unable to adjust the rapping force distribution according to different dust accumulation characteristics under different operating conditions.

The invention discloses an electromagnetic rapping unit control method, which adopts an electromagnetic driving technology to replace a traditional pneumatic mode, and realizes accurate positioning and personalized rapping treatment of different positions of the back of a patient through a modularized electromagnetic rapping unit array capable of being independently controlled. The percussion device has the core effects that the motion of the percussion head is directly and linearly controlled by utilizing current, so that the percussion strength, frequency and working mode (such as simulated natural inertia percussion or whole-course controlled accurate percussion) are subjected to digital high-precision adjustment; meanwhile, closed-loop position feedback and mechanical and electrical dual safety protection are integrated, the sputum excretion treatment effect and the comfort degree of a patient are improved, meanwhile, high safety and automation of the treatment process are guaranteed, and the workload of medical staff is remarkably relieved.

The invention discloses an electric dust remover anode rapping method based on gravity sensing, which comprises the following steps: monitoring the weight of dust attached to an anode plate in real time through a gravity sensor arranged on the anode plate of an electric dust remover; according to the relation between the weight of dust attached to the anode plate and a weight threshold value, the vibration time is judged; when the vibration opportunity is met, vibration parameters of the vibration device are determined according to the weight of dust attached to the anode plate; after the rapping operation is executed, the rapping parameters of the rapping device are dynamically adjusted according to the weight, fed back by the gravity sensor in real time, of dust attached to the anode plate. According to the electric dust remover anode rapping method based on gravity sensing, the overall dust removal efficiency of the electric dust remover is improved, the energy consumption of the rapping device is reduced, the loss degree of rapping to equipment is reduced, and the service life of the electric dust remover is prolonged; under different working conditions of a unit, the electric dust remover can be fully vibrated, and the dust removal effect of the electric dust remover is more fully improved.

The utility model discloses a cathode rapping device of electric precipitation equipment, which is used for reducing the influence caused by the shaking of the tail end of a rapping main shaft of the cathode rapping device of the electric precipitation equipment. The utility model provides a cathode rapping device of electric precipitation equipment, which comprises a motor, a main shaft driven by the motor and a plurality of auxiliary shafts arranged in parallel, the rotation of the main shaft drives the auxiliary shafts to rotate through a transmission mechanism, and a plurality of rapping components are arranged on the auxiliary shafts at intervals. The auxiliary shaft rotates to drive the rapping assembly to conduct rapping, a limiting piece is arranged at the end, away from the motor, of the main shaft and comprises a fixed part fixedly arranged and a limiting part arranged at one end of the fixed part, a limiting groove is formed in the limiting part, and one end of the main shaft is rotationally limited in the limiting groove. According to the cathode rapping device, shaking of the end, away from the main shaft, of the main shaft is reduced. The utility model further provides electric precipitation equipment which comprises the cathode rapping device in the scheme.

The utility model discloses an adjustable rapping device of an electric precipitator, which comprises a hammerhead, a chute hole, a sliding body, a rotating screw rod, a U-shaped seat, a swing arm and a connecting body, the chute hole is arranged on the connecting body, the rotating screw rod is arranged in the chute hole, the lower end of the rotating screw rod extends out of the connecting body and is provided with a screwing head, and the U-shaped seat is arranged on the U-shaped seat. A sliding body in threaded connection with the rotating screw rod is arranged on the rotating screw rod in a sleeving mode, the sliding body is located in the sliding groove hole and matched with the sliding groove hole, a U-shaped base is arranged on the sliding body, a swing arm is arranged on the U-shaped base, and a hammer head is arranged on the swing arm. Compared with the prior art, the vibration requirement can be well met, and adjustment is convenient.

The application discloses a kind of silo rapping device control method, device, equipment and medium, comprising: in response to user triggered silo selection signal, determine the control mode corresponding to target silo corresponding to silo selection signal;When control mode is interlocked discharge port control mode, monitor whether the corresponding material break signal of target silo exists;When monitoring that the corresponding material break signal of target silo exists, generate control signal, control signal is used to control the operation of the first group of rappers and / or electric push rod corresponding to target silo, and control the operation of the second group of rappers and / or electric push rod corresponding to target silo.The application can improve the response efficiency of rappers, reduce the damage rate of rappers.In improving the response efficiency of rappers, ensure the timeliness of material break detection, reduce the material break time, shorten the length of time, improve the stability of feeding.

An automatic dust-controlling silo relates to the field of container technology for storing or transporting objects or materials. It includes: a silo body with a feeding section, a main body section, and a funnel section; a rapping device disposed on the outer wall of the funnel section, the rapping device comprising at least two sets of circumferentially evenly distributed pneumatic impact components; and a back-blowing material dispersing ring pipe disposed on the outer wall of the funnel section, the back-blowing material dispersing ring pipe having a plurality of air holes evenly distributed circumferentially, the air holes communicating with the interior of the funnel section. This invention uses the axially evenly distributed rapping device in the funnel section to loosen materials and clumps adhering to the silo wall through mechanical impact. Combined with the high-pressure airflow released by the back-blowing material dispersing ring pipe, it further removes residual powder, disrupts electrostatic adsorption, and inhibits secondary bridging, forming a synergistic clearing closed loop of rapping followed by blowing.

The invention relates to the technical field of flue gas treatment equipment, and provides a dust removal device for a blast furnace flue gas treatment system, which comprises a box body and a filter bag frame arranged in the box body, and further comprises a driving mechanism and a rapping frame, the rapping frame is arranged in the box body, sleeves which are in one-to-one correspondence and sleeve the lower part of the filter bag frame are arranged in the rapping frame, and first sliding rods are symmetrically arranged on two sides of the rapping frame. According to the invention, the defects in the prior art are overcome, the design is reasonable, the structure is compact, a dust layer with relatively strong adhesive force on the surface of the filter bag can be effectively destroyed and stripped through periodic mechanical rapping in a dust cleaning mode of combining mechanical rapping and pulse blowing, and favorable conditions are created for subsequent blowing; the pulse blowing can provide strong instant reverse airflow, go deep into the filter bag and remove loose fine dust after vibration, the pulse blowing and the filter bag act synergistically, the overall dust removal efficiency and thoroughness are remarkably improved, and the device is particularly suitable for the working condition of dust which is complex in component and possibly viscous in blast furnace flue gas.

The invention provides an intelligent control system and method for a rapping hammer, and the system comprises a detection module which is used for detecting the working state of the rapping hammer to generate an analog electric signal; the analog-to-digital converter is used for converting the analog electric signal into a digital signal; the intelligent control module is deployed on the background server and is used for executing the following steps to remotely and intelligently control the rapping hammer: preprocessing the digital signal to obtain a to-be-analyzed signal, the preprocessing at least comprising filtering and denoising; performing statistical analysis on the to-be-analyzed signal to obtain a statistical analysis result; judging the working state of the rapping hammer according to the statistical analysis result; and according to the working state, generating an intelligent instruction for controlling the rapping hammer so as to control the working state of the rapping hammer. Therefore, the real-time performance and the continuity of monitoring are at least improved, and when a fault or an abnormal condition is found, the system can also trigger an alarm or maintenance process in time, so that the normal operation of equipment is further guaranteed.

The utility model belongs to the technical field of electric dust removers, and discloses a cathode rapping transmission device of an electric dust remover, which comprises a power device, a main transmission device, a rapping shaft and a rapping hammer, the main transmission device is in matched transmission connection with the upper and lower insulated driven transmission devices respectively, the two insulated driven transmission devices are in matched connection with the rapping shaft through the universal coupling, and the other end of the rapping shaft is fixedly connected with the rapping hammer; and the insulated driven transmission device is fixed on the outer side of a shell upright post of the electric dust remover through a fixing frame. According to the utility model, a lateral transmission mode is adopted for installation, and the motor and the electromagnetic insulation rapper are arranged at the outer side part of the shell, so that the internal space is not occupied, dust accumulation is avoided, the maintenance is convenient, the operation reliability is higher, the structure is simple, the maintenance and repair are convenient, the installation space is saved, and the rapping transmission performance of the electric dust remover is greatly improved.

The application discloses a kind of pneumatic rappers for electric dust collector, including shell, impact head, high-temperature magnet, high-temperature spring, two hard sealing rings and a soft sealing ring made of polytetrafluoroethylene, the impact head is housed in shell interior, the outer peripheral wall of the impact head is equipped with the soft sealing ring and hard sealing ring for sealing between shell inner wall, the soft sealing ring is located between two hard sealing rings, the rear end of the impact head is integrally formed with impact hammer, the rear end of the shell is provided with hammer hole for impact hammer to extend, the rear end of the impact head and shell are provided with high-temperature spring sleeved on impact hammer, the front end of the impact head is embedded with high-temperature magnet, the front end of the shell is provided with air inlet, compared with prior art, can resist electric dust collector inside flue gas high temperature, high dust and corrosive environment, good running stability, can effectively improve dust cleaning effect and equipment life.

The application discloses a bucket elevator and a rapping device. The rapping device comprises at least two rapping hammers, any of which comprises a rotating shaft capable of being fixedly rotated and a plurality of hammer arms arranged around the rotating shaft, any of the hammer arms having a rigid hammer head and an elastic hammer rod I, two ends of the elastic hammer rod I being connected with the rotating shaft and the rigid hammer head respectively, ideal trajectories of the rigid hammer heads of any two adjacent rapping hammers being coplanar and partially overlapped to realize transmission connection, and the ideal trajectory of the rigid hammer head of any rapping hammer being used to be coplanar and partially overlapped with a moving trajectory of a to-be-rapped object to realize transmission connection. The to-be-rapped object in motion can drive the rapping device to realize rotation of all the rapping hammers around respective rotating shafts, and the to-be-rapped object can be rapped and shaken when passing through the rapping hammers in rotation. The rapping device can operate with the to-be-rapped object and stop with the to-be-rapped object, does not need to be manually controlled and does not need to be driven by external force, and can realize automatic rapping and shaking of the to-be-rapped object, for example, a hopper of a bucket elevator.

Provided is a rotary sintering furnace that includes a furnace body assembly and a rapping device. The furnace body assembly includes a heating zone, a heat preservation zone, a cooling zone, a rotary furnace, a first heating device configured to heat the rotary furnace at the heating zone, a second heating device configured to heat the rotary furnace at the heat preservation zone, a cooling device configured to cool the rotary furnace at the cooling zone, and a driving device configured to drive the rotary furnace to rotate. The rapping device is configured to strike the rotary furnace, and includes a first rapping device disposed between the heating zone and the heat preservation zone, and / or a second rapping device disposed between the heat preservation zone and the cooling zone.

The present application relates to the technical field of rapping and dust removal facilities, more specifically, it relates to a sulfuric acid production equipment rapping and dust removal facility and an emergency method when the facility fails, the facility comprises a device body, a gas inlet distribution plate is arranged in the device body, a rapping hammer, a rapping rod and a rapping chain plate assembly are further arranged in the device body, the rapping hammer is arranged on the device body by being connected with a driving element, the rapping rod is arranged between the rapping hammer and the rapping chain plate assembly, the rapping chain plate assembly contacts the gas inlet distribution plate, the rapping rod drives the rapping chain plate assembly by being struck by the rapping hammer, the sulfuric acid production equipment rapping and dust removal facility and the emergency method when the facility fails can reduce the probability of failure of the setting of the rapping hammer during long-term high-temperature rapping, thereby maintaining stable rapping and dust removal effect.

The utility model provides a cathode rapping device of an electric dust remover, which is characterized in that a main frame of a cathode frame in the device is suspended on a support beam through a main mast, so that when a rapping part applies upward acting force to the main mast, the main mast moves upwards relative to the support beam; therefore, the vibrating force and the vibrating acceleration acting on the cathode frame are not easy to attenuate, the dust removal efficiency of the cathode wire is improved, the dust of the cathode wire can be effectively removed, the dust removal efficiency of the electric dust remover is further improved, and the electric dust remover can efficiently and stably operate for a long time.

The application discloses a kind of high ash condition under pneumatic rapping ash efficiency optimization method, it is related to flue gas electrostatic precipitation technical field, including, to high ash condition rapping data set carries out time window frequency feature extraction, obtains rapping multi-modal feature set, quantifies rapping performance state by rapping state evaluation algorithm, generates rapping comprehensive state set;Based on rapping comprehensive state set, construct double-constraint rapping optimization model, by optimizing configuration to rapping intensity parameter, generate regional rapping optimization strategy;Execute regional rapping optimization strategy, combine high ash condition rapping data set by acoustic vibration feature to identify the marginal ash cleaning effect of pneumatic rapping, obtain rapping execution result;According to rapping execution result, double-constraint rapping optimization model is adaptively adjusted, and combined with rapping comprehensive state set carries out ash cleaning performance trend analysis, obtains ash cleaning efficiency optimization report.The application is by constructing rapping comprehensive state set, improves ash cleaning efficiency and reduces unit ash cleaning energy consumption.

The utility model belongs to the technical field of kiln tail boilers, and relates to a rapping device of a kiln tail boiler. The buckle (2) is arranged on the rapping rod (1), a cavity is formed between the rapping rod (1) and the buckle (2), the kidney-shaped hole (4) is formed in the rapping seat (3), one end of the rapping seat (3) extends to the cavity between the rapping rod (1) and the buckle (2), and the bolt (5) penetrates through the kidney-shaped hole (4) to be connected with the rapping rod (1). The rapping device for the kiln tail boiler is simple in structure, when the tube bundle is heated and expands, the tube bundle can freely stretch out and draw back within a limited range, the expansion amount can be released, the problem of stress concentration of tube bundle elbows is avoided, the water leakage probability of the boiler is reduced, and the safety of equipment is ensured.

The utility model belongs to a noise reduction structure of a boiler rapping device in the technical field of boiler parts. The rapping device (1) is arranged on the base (2), the noise reduction housing (3) is arranged on the base (2), the rapping device (1) is located in the noise reduction housing (3), the plate (4) is arranged on the inner side of the noise reduction housing (3), a cavity (5) is formed between the noise reduction housing (3) and the plate (4), and the sound insulation cotton layer (6) is arranged in the cavity (5). One side of the rapping device (1) is close to the wall body (7), the noise reduction housing (3) is not arranged on the side close to the wall body (7), a cavity (5) is formed between the plate (4) arranged on the side close to the wall body (7) and the wall body (7), and a sound insulation cotton layer (6) is arranged in the cavity (5). According to the noise reduction structure of the boiler rapping device, the sound insulation and noise reduction functions are effectively achieved.

The utility model discloses a power-loss alarm device for an electric precipitation low-pressure rapping device, which relates to the technical field of electric precipitation and comprises an audible and visual alarm, a power-loss alarm mechanism is mounted at one end of the audible and visual alarm and comprises a mounting box, one side of the mounting box is fixedly connected with one end of the audible and visual alarm, and the other side of the mounting box is fixedly connected with the audible and visual alarm. According to the utility model, the power-loss alarm mechanism is fixed at the power-loss monitoring position of the control power of the electric precipitation low-voltage rapping device, the power-loss monitoring module is installed inside the installation box, the voltage transformer used for voltage detection is arranged on the power-loss monitoring module, and when the control power is lost, the power-loss alarm mechanism is fixed on the power-loss monitoring position of the control power of the electric precipitation low-voltage rapping device. The voltage at the two ends of the coil rapidly drops, the normally-closed contact is closed, a power-loss alarm trigger signal is output, the audible and visual alarm is used for carrying out audible and visual alarm on the alarm signal, power-loss abnormity of equipment can be found in time, and the working state of the device can be rapidly and accurately determined.