Insulation purging device for insulator of electric dust collector

Abstract

The utility model discloses an electric dust collector insulator heat preservation blowing device which comprises a heat preservation box body arranged on the periphery of an electric dust collector body, an insulator is fixedly installed in the heat preservation box body, heaters are arranged on the upper end face, the lower end face and the inner side face of the outer end face of the heat preservation box body respectively, and an access door is arranged on the outer side face of the heat preservation box body. A top blowing device is arranged at the upper end of the interior of the heat preservation box body, a bottom blowing device is arranged at the bottom end of the heat preservation box body, an air inlet of the top blowing device and an air inlet of the bottom blowing device are communicated with an air supply pipeline, and an adjusting valve is installed in the air supply pipeline. The thermal insulation box is reasonable in structural design, the thermal insulation effect is good through the structure of the heaters on the three faces of the thermal insulation box body, meanwhile, the heaters are arranged on the outer end face and are easy to overhaul and maintain, the labor intensity of workers is reduced, the insulators and the bottom of the thermal insulation box can be purged through the structural design of the top purge device and the bottom purge device, soot is not prone to accumulation, and the thermal insulation effect is good. And the dust accumulation phenomenon is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collector device equipment, in particular to an insulator heat preservation and sweeping device for an electric dust collector. Background Art

[0002] The electrostatic precipitator is a device that uses the principle of electrostatic action to capture dust. Compared with other dust removal equipment, it has the following characteristics: high dust collection efficiency, low resistance, low energy consumption and wide adaptability. The insulator is the basic part of the electrostatic precipitator and also a key component. Its main functions are: supporting the cathode frame, isolating the cathode vibration, allowing the power supply wire to pass through the wall and prevent the cathode from swinging. Although the insulator accounts for a small proportion of the electrostatic precipitator, it is related to the dust collection efficiency of the electrostatic precipitator and the future operating costs.

[0003] The cathode rapping insulator of the electrostatic precipitator is arranged in an insulation box. In order to prevent condensation on the surface of the insulator, an electric heater is generally arranged in the insulation box. For example, patent announcement number: CN 202173992 U discloses a hot air blowing device for an electrostatic precipitator, which includes an insulation box and a heating device. The insulation box is covered on the cathode insulator of the electrostatic precipitator; the heating device is composed of an axial flow fan, an air duct and an electric heater. The axial flow fan is arranged on the electric heater and communicates with the insulation box through the air duct; the insulation box is provided with a thermocouple. Since each cathode insulator of the utility model is provided with a device for directly blowing hot air, energy consumption and equipment failure rate can be reduced, and the insulation box quickly raises the temperature to enable the electrostatic precipitator to work normally and improve the dust removal efficiency.

[0004] However, some problems were exposed in actual operation, as follows:

[0005] 1. Dust easily accumulates in the insulation box, causing the insulator to break down due to creepage;

[0006] 2. When the heater in the insulation box fails or is damaged, if it is not repaired in time, acid mud will form on the surface of the insulator, damaging the insulator. Utility Model Content

[0007] The purpose of the utility model is to overcome the defects and shortcomings of the prior art, provide an insulator heat preservation and blowing device for an electric precipitator, and solve various problems existing in the prior art.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] An insulator insulation and blowing device for an electric precipitator comprises an insulation box body arranged around the electric precipitator body, an insulator is fixedly installed in the insulation box body, the upper and lower end faces of the outer end face and the inner side face of the insulation box body are respectively provided with heaters, the outer side face of the insulation box body is provided with an inspection door, the upper end portion of the insulation box body is provided with two top blowers arranged in parallel and arranged horizontally along the length direction of the insulator, the bottom end portion of the insulation box body is provided with a bottom blower arranged longitudinally, the air inlets of the top blower and the bottom blower are respectively connected to the air supply duct, and an adjusting valve is installed in the air supply duct.

[0010] The four corners on both sides of the electric precipitator body are respectively provided with insulation box bodies.

[0011] The top blower and the bottom blower have the same structure and respectively include a pipeline, and a slot-shaped air outlet is opened on the pipeline.

[0012] The spraying angles of the slot-shaped air outlets of the top blower are all toward the insulator.

[0013] The grooved air outlet of the bottom blower faces downward and is used to blow away the soot that falls on the bottom of the insulation box body.

[0014] A thermometer extending into the heat preservation box body is installed on the heat preservation box body.

[0015] The air inlet of the air supply duct is connected to the fan, and the fan is a high-pressure head and small-flow fan. A reducer is connected to the air inlet of the air supply duct, and the reducer is connected to the electric heater and then to the fan.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model has a reasonable structural design. Through the structure of the upper and lower end surfaces of the insulation box body and the heater on the inner side surface, the insulation effect is good. At the same time, the heater is arranged on the outer end surface, which is easy to repair and maintain, reducing the labor intensity of employees. When the heater fails or is damaged, it can be repaired in time, avoiding the problem of inconvenient or untimely repair, acid mud forming on the surface of the insulator, and damaging the insulator. It is convenient to replace and ensures the practical life of the insulator.

[0018] Through the structural design of the top blower and the bottom blower in the main body of the insulation box, the insulator and the bottom of the insulation box can be blown, so that smoke and ash are not easy to accumulate, thus avoiding the phenomenon of ash accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2It is a front view schematic diagram of the main structure of the thermal insulation box;

[0021] Figure 3 It is a side sectional schematic diagram of the main structure of the thermal insulation box;

[0022] Figure 4 It is a schematic diagram of the structure of the top purge;

[0023] Figure 5 for Figure 4 Cross-sectional view of BB.

[0024] Reference numerals:

[0025] 1. Fan; 2. Electric heater; 3. Fixed bracket; 4. Reducer; 5. Air supply duct; 6. Regulating valve; 7. Insulation box body; 8. Top purge; 9. Bottom purge; 10. Heater; 11. Thermometer; 12. Inspection door; 13. Insulator; 891. Pipe; 892. Slot-shaped air outlet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See attached Figure 1-5 ;

[0028] An insulator heat preservation and purge device for an electric dust collector comprises: a pressure head fan 1, an electric heater 2, a fixing bracket 3, a reducer 4, an air supply duct 5, a regulating valve 6, a heat preservation box body 7, a top purge 8, a bottom purge 9, a heater 10, a thermometer 11, an inspection door 12, an insulator 13, etc.;

[0029] The heat preservation box body 7 is arranged around the electric precipitator body, and the heat preservation box body 7 is respectively arranged at the four corners on both sides of the electric precipitator body. An insulator 13 is fixedly installed in the heat preservation box body 7. The upper and lower end surfaces and the inner side surface of the outer end surface of the heat preservation box body 7 are respectively provided with heaters 10. An independent space is used to facilitate the replacement of the heating pipe. The outer side surface of the heat preservation box body 7 is provided with an inspection door 12;

[0030] The upper end of the heat preservation box body 7 is provided with two top blowers 8 arranged in parallel and transversely arranged along the length direction of the insulator 13, and the bottom end of the heat preservation box body 7 is provided with a bottom blower 9 arranged longitudinally, and the air inlets of the top blower 8 and the bottom blower 9 are respectively connected to the air supply duct 5, and the air supply duct 5 is installed with a regulating valve 6. The regulating valve can adjust the hot air pressure and air volume entering the heat preservation box according to the actual production situation.

[0031] Furthermore, the top blower 8 and the bottom blower 9 have the same structure, and each includes a pipe 891, and a slot-shaped air outlet 892 is provided on the pipe 891. The injection angle of the slot-shaped air outlet 892 of the top blower 8 is toward the insulator 13. The slot-shaped air outlet 892 of the bottom blower 9 faces downward, and is used to blow away the soot that falls on the bottom of the insulation box body 7.

[0032] Further, a thermometer 11 extending into the heat preservation box body is installed on the heat preservation box body 7. The thermometer is arranged in the heat preservation box, and the opening of the regulating valve can be adjusted according to the temperature to prevent condensation of flue gas.

[0033] Furthermore, the air inlet of the air supply duct 5 is connected to the fan 1, and the fan 1 adopts a high-pressure head and small-flow fan. A reducer 4 is connected to the air inlet of the air supply duct 5, and the reducer 4 is connected to the electric heater 2 and then to the fan 1. The electric heater 2 is mounted on the top of the electrostatic precipitator through a fixed bracket 3; a reducer is provided at the end of the air supply duct to increase the wind speed.

[0034] In the above scheme, the outlet of the pressure head fan is connected with the electric heater 2, the reducer 4, the air supply duct 5, the regulating valve 6, etc. in sequence. A fixed bracket 3 is arranged under the electric heater 2. The end of the air supply duct 5 is connected with the heat preservation box body 7. The top blower 8 and the bottom blower 9 are connected with the air supply duct 5 in the heat preservation box body 7. The hot air injection angle of the top blower 8 is horizontally downward facing the insulator 13. The bottom blower 9 is convenient for soot blowing at the bottom of the heat preservation box body 7. The thermometer 11 is installed in the middle of the heat preservation box body 1, and the inspection door 12 is installed on the side of the heat preservation box body 7. Through the structure of the upper and lower end surfaces of the heat preservation box body 7 and the inner side of the heater 10, the heat preservation The effect is good, and the heater 10 is arranged on the outer end surface, which is easy to inspect and maintain, and reduces the labor intensity of employees. When the heater fails or is damaged, it can be repaired in time to avoid inconvenient or untimely maintenance, acid mud forming on the surface of the insulator, and damage to the insulator. It is convenient to replace and ensure the practical life of the insulator; through the structural design of the top blower 8 and the bottom blower 9 in the insulation box body 7, the insulator 13 and the bottom of the insulation box body 7 can be purged, and the ash is not easy to accumulate, avoiding the phenomenon of ash accumulation. This insulation and purging device has good insulation effect, ash is not easy to accumulate, easy to inspect and maintain, and reduces the labor intensity of employees.

[0035] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0036] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. An insulator heat preservation and blowing device for an electric precipitator, comprising an insulation box body (7) arranged around the electric precipitator body, an insulator (13) being fixedly installed in the insulation box body (7), characterized in that: The upper and lower end surfaces and the inner side surface of the outer end surface of the heat preservation box body (7) are respectively provided with heaters (10); the outer side surface of the heat preservation box body (7) is provided with an inspection door (12); the upper end portion of the interior of the heat preservation box body (7) is provided with two top blowers (8) arranged in parallel and arranged transversely along the length direction of the insulator (13); the bottom end portion of the heat preservation box body (7) is provided with a bottom blower (9) arranged longitudinally; the air inlets of the top blower (8) and the bottom blower (9) are respectively connected to the air supply duct (5), and a regulating valve (6) is installed in the air supply duct (5).

2. The heat preservation and blowing device for electric precipitator insulators according to claim 1 is characterized in that: Insulation box bodies (7) are respectively arranged at four corners on both sides of the electrostatic precipitator body.

3. The heat preservation and blowing device for electric precipitator insulators according to claim 1 is characterized in that: The top blower (8) and the bottom blower (9) have the same structure and each comprises a pipeline (891). A slot-shaped air outlet (892) is provided on the pipeline (891).

4. The heat preservation and blowing device for electric precipitator insulators according to claim 3 is characterized in that: The spraying angles of the slot-shaped air outlets (892) of the top blower (8) are all directed toward the insulator (13).

5. The heat preservation and blowing device for electric precipitator insulators according to claim 3 is characterized in that: The groove-shaped air outlet (892) of the bottom blower (9) faces downward and is used to blow away the soot that falls on the bottom of the insulation box body (7).

6. The heat preservation and blowing device for electric precipitator insulators according to claim 1, characterized in that: The heat preservation box body (7) is provided with a thermometer (11) which extends into the heat preservation box body.

7. The heat preservation and blowing device for electric precipitator insulators according to claim 1 is characterized in that: The air inlet of the air supply duct (5) is connected to the fan (1), and the fan (1) is a fan with a high pressure head and a small flow rate. A reducer (4) is connected to the air inlet of the air supply duct (5), and the reducer (4) is connected to the electric heater (2) and then to the fan (1).

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