CN216910617U

CN216910617U - Electric dust remover

Info

Publication number: CN216910617U
Application number: CN202220177155.2U
Authority: CN
Inventors: 谢庆亮; 张跃; 袁素华; 官德亮; 许一凡
Original assignee: Fujian Longking Co Ltd.
Current assignee: Fujian Longking Co Ltd.
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-07-08
Anticipated expiration: 2032-01-21

Abstract

The application discloses electrostatic precipitator, including cathode insulator subassembly, insulation can and vacuum phase transition heat exchanger, cathode insulator subassembly includes the insulator body, and the insulator body is arranged in the insulation can, and vacuum phase transition heat exchanger's exothermic portion is located the insulation can, the endothermic portion is located the insulation can outside and can contact with the flue gas in, exothermic portion is cyclic annular and encircles the setting of insulator body. According to the scheme, the vacuum heat exchange phase-change heat exchanger extracts heat from smoke, the insulator body is heated by the heat, the heat preservation effect of the heat preservation box is added, the temperature of the outer surface of the insulator body is basically kept higher than the dew point temperature of air, the possibility of dewing on the outer surface of the insulator body is reduced, an annular high-temperature area can be formed on the outer surface of the insulator body, a path is formed by dew on the outer surface of the insulator body in an isolated and blocked mode, and the situations of short circuit, insulator burst and the like can be avoided. The scheme has the advantages of low operation cost, safe and stable operation and the like.

Description

Electric dust remover

Technical Field

The application relates to the technical field of dust removal, in particular to an electric dust removal device.

Background

The electric dust collector is widely applied to the fields of electric power, steel, chemical industry and the like. The working principle of the electric dust collector is that the electrode discharge is utilized to charge dust particles in the flue gas, so that the dust particles are collected and captured. In a humid environment, the outer surface of a cathode insulator of the electric dust removal device is easy to dew, so that the cathode insulator generates a slight discharge phenomenon, the insulation strength is reduced due to long-time discharge, even insulation breakdown is caused, and safety accidents are caused.

Therefore, in the use process of the electric dust removal device, the outer surface of the cathode insulator needs to be heated so as to reduce the possibility of dewing on the outer surface of the cathode insulator. At present, the outer surface of the cathode insulator is heated mainly by adopting an electric heating or hot air blowing technology. The electric heating technology is mainly to heat the air around the insulator through an electric heater so as to achieve the purpose of heating the outer surface of the cathode insulator. The hot air blowing technology mainly blows hot air to the outer surface of the cathode insulator by using an over-blowing fan and an air heater so as to achieve the purpose of heating the outer surface of the cathode insulator.

No matter the electric heating technology or the hot air blowing technology needs external power supply, the defect of high energy consumption exists, and the running cost of the electric dust removal device is high.

SUMMERY OF THE UTILITY MODEL

The application provides an electric dust collector, electric dust collector includes negative pole insulator subassembly, insulation can and vacuum phase transition heat exchanger, negative pole insulator subassembly includes the insulator body, the insulator body is arranged in the insulation can, a part of vacuum phase transition heat exchanger is located in the insulation can, another part is located the outer just can contact with the flue gas in the flue of insulation can.

In one embodiment, the vacuum phase change heat exchanger includes a heat radiating portion in the heat insulating box, the heat radiating portion is in a ring shape, and the heat radiating portion is disposed around the insulator body.

In one embodiment, the heat radiating portion is disposed perpendicular to a central axis of the insulator body or disposed to be inclined with respect to the central axis of the insulator body.

In one embodiment, the vacuum phase change heat exchanger further includes a heat absorbing part and a heat conducting part, and an inner cavity of the heat absorbing part and an inner cavity of the heat radiating part are communicated through the heat conducting part.

In one embodiment, the heat absorbing portion is annular, the heat conducting portion includes a plurality of heat conducting pipes, the bottom ends of the heat conducting pipes are communicated with the heat absorbing portion, the top ends of the heat conducting pipes are communicated with the heat radiating portion, and the heat conducting pipes are sequentially arranged at intervals along the circumferential direction of the heat absorbing portion.

In one embodiment, the cathode insulator assembly includes an insulator base, the bottom support of the insulator body is fixed to the insulator base, and the heat conducting pipe is inserted into the insulator base.

In one embodiment, a positioning sleeve is sleeved outside the heat conduction pipe, and the heat conduction pipe and the insulator base are positioned by the positioning sleeve.

In one embodiment, the cathode insulator assembly includes an insulator cover and a suspension rod, the insulator cover is mounted on the top of the insulator body, and the suspension rod is sequentially inserted into the insulator base, the insulator body and the insulator cover.

In one embodiment, a locking nut is connected to the outside of the suspension rod, and the suspension rod and the insulator cover are positioned by the locking nut.

In one embodiment, each of the insulator bodies is arranged in one insulation can in a one-to-one correspondence, or a plurality of insulator bodies are arranged in the same insulation can.

This scheme, when the flue gas flows through vacuum phase change heat exchanger, vacuum heat transfer phase change heat exchanger draws the heat from the flue gas, heats insulator body surface with this heat, and under the heat preservation effect of insulation can, the temperature of insulator body surface keeps being higher than the dew point temperature of air basically, has consequently reduced the possibility of insulator body surface dewfall to compare and adopt electric heating technique and hot-blast technique of sweeping, the energy consumption is lower, makes electrostatic precipitator's whole running cost lower.

And the heat release part of the vacuum phase-change heat exchanger can enable the outer surface of the insulator body to form an annular high-temperature area, and the annular high-temperature area can isolate and block dew on the outer surface of the insulator body to form a passage, so that the problems of short circuit of the device, explosion of the insulator body and the like caused by the communication of a sealing cover of the insulator at the top of the insulator body and an insulator base at the bottom of the insulator body through dew are avoided.

Therefore, the electric dust removal device provided by the scheme has the advantages of low operation cost and safe and stable operation.

Drawings

FIG. 1 is a perspective view of a portion of one embodiment of an electrical precipitation device provided herein;

FIG. 2 is a view of FIG. 1 with the incubator hidden;

FIG. 3 is a perspective view of a portion of another embodiment of an electrical precipitation device provided herein.

The reference numerals are explained below:

10 cathode insulator assembly, 101 insulator body, 102 insulator base, 103 insulator cover, 104 suspension rod, 105 lock nut;

20 vacuum phase change heat exchanger, 201 heat release part, 202 heat absorption part, 203 heat conduction part, 203a heat conduction pipe, 204 positioning sleeve;

30 an incubator.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present application, the following detailed description is made with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, the electric dust removing apparatus includes a cathode insulator assembly 10, a vacuum phase-change heat exchanger 20, and an insulation can 30.

As shown in fig. 2, the cathode insulator assembly 10 includes an insulator body 101, an insulator base 102, an insulator cover 103, a suspension rod 104, and a lock nut 105.

The insulator body 101 is located in the heat insulation box 30. The bottom of the insulator body 101 is supported and fixed on the insulator base 102. The insulator body 101 is typically made of glass or ceramic. In the figure, the insulator body 101 is gradually tapered from bottom to top.

The insulator cover 103 is fixed on top of the insulator body 101. The suspension rod 104 sequentially penetrates through the insulator base 102, the insulator body 101 and the insulator cover 103 from bottom to top. The top end of the suspension rod 104 extends above the insulator cover 103. The lock nut 105 is screwed on the top end periphery of the suspension rod 104, and the lock nut 105 presses the top surface of the insulator cover 103 to define the relative positions of the suspension rod 104 and the insulator cover 103.

High-temperature flue gas in the flue flows through the inside of the insulator body 101 along the flue, under the isolation of the insulator sealing cover 103, the high-temperature flue gas only heats the inner surface of the insulator body 101 inside the insulator body 101, and the outer surface of the insulator body 101 has a large temperature difference (the temperature is significantly lower than the temperature of the inner surface of the insulator body 101) with the inner surface of the insulator body 101 due to insufficient heating time of the flue gas, and in a humid environment, the existence of the temperature difference can cause dewing on the outer surface of the insulator body 101.

On the one hand, dew condensation can cause slight discharge phenomenon of the insulator body 101, and long-time discharge can cause reduction of the insulation strength and even insulation breakdown, thereby causing safety accidents. On the other hand, as the amount of dew condensation increases, dew condensation on the surface of the insulator body 101 forms a path from the top to the bottom, and the insulator cover 103 and the insulator base 102 are easily communicated with each other. The insulator cover 103 is in direct contact with the high-voltage suspension rod 104, and the insulator base 102 is a grounding electrode, so that once the insulator cover 103 is communicated with the insulator base 102, the electric dust collector is short-circuited or the insulator body 101 is cracked.

Therefore, during the use of the electric dust collector, the outer surface of the insulator body 101 should be prevented from dewing as much as possible.

As shown in fig. 2, the vacuum phase-change heat exchanger 20 includes a heat emitting portion 201, a heat absorbing portion 202, and a heat conducting portion 203.

The heat radiation part 201 is located in the heat insulation box 30. The heat radiating portion 201 has an inner cavity. The heat absorbing part 202 is located outside the heat insulating box 30. The heat sink portion 202 is also provided with an internal cavity. The flue gas may flow over the outer surface of the heat absorbing section 202.

The heat conducting part 203 is also provided with an inner cavity, and the inner cavity of the heat conducting part 203 is communicated with the inner cavity of the heat releasing part 201 and the inner cavity of the heat absorbing part 202, so that the inner cavities of the three parts are communicated with each other to form a closed cavity. The sealed cavity is a vacuum cavity, and the sealed cavity is filled with a working medium. The working medium is selected from the working medium with low boiling point in vacuum state, so that the heat transfer process of the vacuum phase-change heat exchanger 20 can be started quickly at lower temperature. The working medium can be purified water, ethanol, diethyl ether, acetone, etc.

The heat transfer process of the vacuum phase-change heat exchanger 20 is as follows: when high-temperature flue gas in the flue flows through the heat absorption part 202, the working medium in the heat absorption part 202 is heated and boiled and evaporated after being heated, so that the working medium is changed into a vapor state from a liquid state, the vapor working medium flows through the heat conduction part 203 and enters the heat release part 201, and because the temperature in the heat insulation box 30 is lower, the vapor working medium in the heat release part 201 starts to be condensed and release heat, so that the working medium is changed into a liquid state from a vapor state, and the liquid working medium flows back into the heat absorption part 202 through the heat conduction part 203.

In the case where there is a temperature difference between the heat radiating portion 201 and the heat absorbing portion 202, the above-described heat transfer process continues, and the heat radiating portion 201 is finally heated to a state of substantially the same temperature as the heat absorbing portion 202.

The outer surface of the insulator body 101 can be heated when the vaporous working medium in the heat release part 201 is condensed to release heat, and the outer surface temperature of the insulator body 101 can be basically kept higher than the dew point temperature of air by the heat preservation effect of the heat preservation box 30, so that the possibility of dew condensation on the outer surface of the insulator body 101 is reduced.

This application utilizes vacuum phase transition heat exchanger to extract the heat from the flue gas, heats insulator body 101's surface with this heat to this reduces insulator body 101 surface dewfall's possibility. Compared with the method that the outer surface of the insulator body 101 is heated by adopting an electric heating technology and a hot air blowing technology, the energy consumption is lower, and the overall operation cost of the electric dust removal device is lower.

Specifically, as shown in fig. 2, the heat radiating portion 201 may be disposed in a ring shape and around the insulator body 101. Like this, enable insulator body 101 surface and form an annular high temperature region, this annular high temperature region can be isolated, block the dew on insulator body 101 surface, avoids dew to lead to insulator base 102 and insulator closing cap 103 intercommunication to cause the problem emergence that electrostatic precipitator short circuit or insulator body 101 burst at insulator body 101 surface formation route.

Specifically, the heat radiating portion 201 may be disposed perpendicular to the central axis of the insulator body 101, or may be disposed obliquely with respect to the central axis of the insulator body 101. Only one heat radiating portion 201 may be provided on the outer periphery of each insulator body 101, or a plurality of heat radiating portions 201 may be provided at intervals in the axial direction.

Specifically, the heat absorbing unit 202 may be provided in a ring shape. The heat absorbing part 202 may be disposed in parallel with or at an angle to the heat radiating part 201.

Specifically, the heat conduction portion 203 may include a plurality of heat conduction pipes 203a, the bottom ends of the heat conduction pipes 203a communicate with the heat absorption portion 202, the top ends communicate with the heat dissipation portion 201, and the heat conduction pipes 203a are sequentially arranged at intervals, preferably at equal intervals, along the circumferential direction of the heat absorption portion 202. With this arrangement, it is possible to ensure that the temperatures at the respective positions in the circumferential direction of the heat radiating portion 201 are substantially uniform.

Specifically, the heat pipe 203a is inserted into the insulator base 102. The insulator base 102 is a plate-like structure. The heat pipe 203a is sleeved with a positioning sleeve 204, and the positioning sleeve 204 abuts against the top surface of the insulator base 102 to define the relative position of the heat pipe 203a and the insulator base 102.

Specifically, as shown in fig. 1, each of the insulator bodies 101 may be disposed in one insulation can 30 in a one-to-one correspondence. As shown in fig. 3, a plurality of insulator bodies 101 may be disposed in the same heat insulation box 30.

Specifically, the heat radiating portion 201, the heat conducting pipe 203a, and the heat absorbing portion 202 may be a light pipe structure, an elliptical pipe structure, a spiral flat pipe structure, a fin pipe structure, a pin pipe structure, or the like.

The foregoing has been a description of the principles and implementations of the present application using specific examples, which are provided solely to aid in understanding the methods and their core concepts of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims

1. The utility model provides an electric dust collector, its characterized in that, electric dust collector includes cathode insulator subassembly (10), insulation can (30) and vacuum phase transition heat exchanger (20), cathode insulator subassembly (10) include insulator body (101), insulator body (101) are arranged in insulation can (30), a part of vacuum phase transition heat exchanger (20) is located in insulation can (30), another part is located outer just can contact with the flue gas in the flue of insulation can (30).

2. The electric dust removal device according to claim 1, wherein the vacuum phase-change heat exchanger (20) comprises a heat releasing portion (201) located in the heat insulation box (30), the heat releasing portion (201) is annular, and the heat releasing portion (201) is arranged around the insulator body (101).

3. The electric precipitation device according to claim 2, wherein the heat releasing portion (201) is arranged perpendicular to the central axis of the insulator body (101) or inclined with respect to the central axis of the insulator body (101).

4. An electric precipitation device according to claim 2, characterized in that the vacuum phase change heat exchanger (20) further comprises a heat absorbing portion (202) and a heat conducting portion (203), the inner cavity of the heat absorbing portion (202) and the inner cavity of the heat emitting portion (201) being in communication through the heat conducting portion (203).

5. An electric dust collector as claimed in claim 4, wherein the heat absorbing part (202) is annular, the heat conducting part (203) comprises a plurality of heat conducting pipes (203a), the bottom ends of the heat conducting pipes (203a) are communicated with the heat absorbing part (202), the top ends of the heat conducting pipes are communicated with the heat radiating part (201), and the heat conducting pipes (203a) are sequentially arranged at intervals along the circumferential direction of the heat absorbing part (202).

6. An electric precipitation device according to claim 5, characterized in that the cathode insulator assembly (10) comprises an insulator base (102), the bottom of the insulator body (101) is supported and fixed on the insulator base (102), and the heat conducting pipe (203a) is inserted into the insulator base (102).

7. An electric precipitation device according to claim 6, wherein the heat conducting pipes (203a) are sleeved with positioning sleeves (204), and the positioning sleeves (204) are used for positioning the heat conducting pipes (203a) and the insulator base (102).

8. The electric dust removal device according to claim 6, wherein the cathode insulator assembly (10) comprises an insulator cover (103) and a suspension rod (104), the insulator cover (103) is covered on the top of the insulator body (101), and the suspension rod (104) is sequentially inserted into the insulator base (102), the insulator body (101) and the insulator cover (103).

9. The electric precipitation device according to claim 8, characterized in that a locking nut (105) is connected outside the suspension rod (104), and the suspension rod (104) and the insulator cover (103) are positioned by the locking nut (105).

10. The electric precipitation device according to any one of claims 1 to 9, wherein each insulator body (101) is arranged in one insulation box (30) in a one-to-one correspondence, or a plurality of insulator bodies (101) are arranged in the same insulation box (30).