CN218167360U - High-voltage insulation heating-free heat preservation device for high-temperature electric dust collector - Google Patents
High-voltage insulation heating-free heat preservation device for high-temperature electric dust collector Download PDFInfo
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- CN218167360U CN218167360U CN202222325426.7U CN202222325426U CN218167360U CN 218167360 U CN218167360 U CN 218167360U CN 202222325426 U CN202222325426 U CN 202222325426U CN 218167360 U CN218167360 U CN 218167360U
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Abstract
The utility model provides a high-voltage insulation exempts from to heat preservation device for high temperature electrostatic precipitator, be equipped with the independent negative pole frame of a plurality of in the electrostatic precipitator, each negative pole frame passes through high-pressure introducing device and connects the burden high pressure, the top of negative pole frame sets up a plurality of and hangs the point, high-voltage insulation exempts from to heat the heat preservation device and includes flue gas heat tracing introducing device to and set up a plurality of insulator room at each suspension point position, the insulating porcelain bushing that is used for the fixed point that hangs is installed to the inner chamber of insulator room, flue gas heat tracing introducing device's inlet end inserts electrostatic precipitator's exhaust end, flue gas heat tracing introducing device's the end of giving vent to anger inserts behind each insulator room heat transfer, reconnection electrostatic precipitator's inlet end. This high-voltage insulation exempts from to heat preservation device can avoid leading to the cracked problem of insulator because of the high temperature difference, has avoided electrical heating simultaneously, and energy-conserving effect is obvious, can satisfy high-efficient stable requirement.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a smoke pollutants administers, the technical field of electric precipitation, especially a high-voltage insulation heating-free heat preservation device for high temperature electrostatic precipitator.
[ background of the invention ]
The high-efficiency removal of the flue gas dust can not only recycle useful resources, but also is one of important ways for realizing green sustainable development of the steel industry. In the non-ferrous metal industry, the temperature of the smoke generated in the smelting of light metals is mostly about 250 ℃, the temperature of the smoke generated in the smelting of non-ferrous metals is about 380 ℃, and the smoke contains more SO 2 And SO 3 The dew point temperature of flue gas acid is about 250 ℃, the corrosion resistance is strong, most of flue gas dust is volatile metal oxide, and the prior electric dust removal technology has the following defects in the high-temperature flue gas dust treatment field of metal smelting and the like:
1 the problem that the insulator chamber of the electric dust collector has large temperature difference under high-temperature flue gas, so that the porcelain bushing is easy to damage.
2, the electric heating heat tracing of the porcelain sleeve under the high-temperature flue gas leads to large heat loss caused by heat dissipation of the electric dust collector, and the electric heating power is high and the power consumption is large.
3, the insulator of the electric dust collector has secondary high voltage under high-temperature smoke, and online maintenance cannot be carried out.
There are currently a number of solutions on the market to the above-mentioned problems. For example, in order to solve the problem that the insulator porcelain bushing of the electric dust collector is easy to break under high-temperature flue gas, the utility model patent with the application number of CN201620959024.4 discloses a low-low temperature electric dust collector high-voltage insulation device, which adopts heated air, and blows hot air into the method of the insulator porcelain bushing, the method is suitable for the low-low temperature electric dust collector with the flue gas temperature of about 90 ℃, if the high-temperature electric dust collector is used, the problems of high heating power consumption (air needs to be heated, the temperature difference is high), insufficient heating effect and the like exist, and the electric heating can not reach the high temperature of 350 ℃ with low energy consumption.
Every insulator room electrical heating power of conventional high temperature electrostatic precipitator is 3.0KW, and the electrical heating is the ring type, installs in insulating insulator (insulating insulator is the cask type) downside a week to take one set of 300MW unit as an example, and electrostatic precipitator insulator room electrical heating power approximately needs 240KW, has the problem that the power consumption is high. Because the power and the heating effect of electrical heating are limited, the temperature of the side of the porcelain sleeve from high-temperature flue gas is relatively high, and under the condition of air leakage, the problem that the porcelain sleeve is easy to break under the temperature difference exists due to the temperature difference of the upper side and the lower side of the porcelain sleeve.
[ Utility model ] content
The utility model aims at solving the problem among the prior art, providing a high-voltage insulation exempts from to heat preservation device for high temperature electrostatic precipitator, can avoid leading to the cracked problem of insulator because of the high temperature difference, exempt from electric heating simultaneously, energy-conserving effect is obvious.
For realizing the above-mentioned purpose, the utility model provides a high voltage insulation exempts from to heat preservation device for high temperature electrostatic precipitator, be equipped with the independent negative pole frame of a plurality of in the electrostatic precipitator, each negative pole frame passes through high-pressure introducing device and connects the burden high pressure, the top of negative pole frame sets up a plurality of and hangs the point, high voltage insulation exempts from to heat the heat preservation device and includes flue gas heat tracing introducing device to and set up a plurality of insulator room at each suspension point position, the insulating porcelain cover that is used for fixed suspension point is installed to the inner chamber of insulator room, flue gas heat tracing introducing device's inlet end inserts electrostatic precipitator's exhaust end, flue gas heat tracing introducing device's the end of giving vent to anger inserts after each insulator room heat transfer, reconnection the inlet end of electrostatic precipitator.
Preferably, the inner wall of the insulator chamber is provided with a flue gas heat preservation coil pipe, and the flue gas heat tracing introduction device is connected with the flue gas heat preservation coil pipe and introduces high-temperature flue gas into the flue gas heat preservation coil pipe to exchange heat with the insulator chamber.
Preferably, the insulator chamber comprises an inner heat insulation cavity and an outer heat insulation cavity which are sequentially arranged from inside to outside, the flue gas heat insulation coil is spirally arranged in the inner heat insulation cavity, and heat insulation cotton is arranged in the outer heat insulation cavity.
Preferably, the inner heat preservation cavity, the outer heat preservation cavity and the flue gas heat preservation coil pipe are all grounded through a grounding device.
Preferably, the insulator chamber is further provided with an online temperature measuring device and a control unit, the online temperature measuring device is used for monitoring the temperature of the inner cavity environment of the insulator chamber on line, and the control unit is connected with the online temperature measuring device and the smoke heat tracing introduction device.
Preferably, a transparent observation top cover is mounted at the top of the insulator chamber, and the transparent observation top cover is grounded through a grounding device.
Preferably, the smoke heat tracing introduction device comprises a suction fan, a first air inlet pipe, a second air inlet pipe and an air outlet pipe, wherein an air inlet end of the suction fan is connected to an air outlet end of the electric dust collector through the first air inlet pipe, an air outlet end of the suction fan is connected to each insulator chamber through a plurality of second air inlet pipes, and an air outlet end of each insulator chamber is connected to an air inlet end of the electric dust collector through the air outlet pipe.
Preferably, the air inlet end of the suction fan is further provided with a temperature sensor, a pressure sensor and a flow sensor.
The utility model has the advantages that:
1. the high-temperature flue gas subjected to electric dust removal in the electric dust remover exchanges heat with the insulator chamber, so that electric heating is avoided, the energy-saving effect is obvious, and the requirements of high efficiency and stability can be met.
2. The insulator porcelain bushing is good in heating effect and small in temperature difference, and the problem that the insulator porcelain bushing is prone to cracking due to high temperature difference is solved.
3. The porcelain bushing online maintenance is realized by arranging the transparent observation top cover, and the maintenance difficulty is reduced.
4. The stability of the high-temperature electric dust remover insulator is improved, and therefore the running stability of the electric dust remover is improved.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic structural view of a high-voltage insulation heating-free heat preservation device for a high-temperature electric dust collector of the present invention;
fig. 2 is an enlarged schematic view of a part of the structure of the high-voltage insulation heating-free heat preservation device for the high-temperature electric dust remover.
[ detailed description ] embodiments
Referring to fig. 1 to 2, the present invention relates to a high voltage insulation heating-free thermal insulation device for a high temperature electric dust collector, wherein a plurality of independent cathode frames 10 are arranged in the electric dust collector, each cathode frame 10 is connected with negative high voltage through a high voltage leading-in device 30, the high voltage leading-in device 30 comprises a high voltage electric porcelain wall bushing 31 and a high voltage power supply 33 provided with a high voltage switch 32; the top of negative pole frame 10 sets up a plurality of (adopt four in this embodiment) suspension point 20, high-voltage insulation exempts from to heat the heat preservation device and includes flue gas heat tracing introducing device 1 to and set up a plurality of that hangs the 20 positions of some and exempt from electric heating's insulator room 2, the insulating porcelain bushing 21 that is used for fixed suspension point 20 is installed to the inner chamber of insulator room 2, the inlet end of flue gas heat tracing introducing device 1 inserts the exhaust end of electrostatic precipitator, the end of giving vent to anger of flue gas heat tracing introducing device 1 inserts behind the 2 heat exchanges of each insulator room, reconnection the inlet end of electrostatic precipitator.
Further, a flue gas heat preservation coil 22 is arranged on the inner wall of the insulator chamber 2, the flue gas heat tracing introducing device 1 is connected with the flue gas heat preservation coil 22, high-temperature flue gas is introduced into the flue gas heat preservation coil 22 to exchange heat with the insulator chamber 2, and the temperature of an inner cavity is kept to be 150-300 ℃ through flue gas heat exchange. In this embodiment, the flue gas insulation coil 22 is made of ND steel or stainless steel. Although the high-temperature flue gas is dedusted by the electric deduster, SO still exists in the flue gas 2 、SO 3 When corrosive gas is used, the flue gas heat-insulating coil 22 is made of ND steel or stainless steel so as to improve the corrosion to the flue gas and prolong the service life.
Furthermore, the insulator chamber 2 comprises an inner heat preservation cavity 23 and an outer heat preservation cavity 24 which are sequentially arranged from inside to outside, the flue gas heat preservation coil 22 is spirally arranged in the inner heat preservation cavity 23, and the flue gas heat preservation coil 22 is in contact with the inner wall of the insulator chamber, so that the heat transfer efficiency of the flue gas heat preservation coil and the inner cavity of the insulator chamber is improved; and heat insulation cotton is arranged in the outer heat insulation cavity 24 to insulate the whole insulator chamber.
Further, the inner heat preservation cavity 23, the outer heat preservation cavity 24 and the flue gas heat preservation coil 22 are all grounded through a grounding device 27. Because negative high voltage produces static easily, static adsorbs to accumulate on the heat preservation chamber wall, produces high-voltage static easily to the sealing material generally is insulating material, leads to the unable problem of releasing of static, has the danger of equipment safety and personnel's electric shock, through setting up independent earthing device 27, has solved this position and has overhauld the safety problem that has the electric shock to and equipment electrostatic discharge leads to the cracked problem of insulator.
Further, an online temperature measuring device 25 and a control unit are further arranged on the insulator chamber 2, the online temperature measuring device 25 is used for monitoring the temperature of the inner cavity environment of the insulator chamber 2 on line, and the control unit is connected with the online temperature measuring device 25 and the smoke heat tracing introduction device 1. When the temperature exceeds the flue gas temperature by 20 ℃, the control unit adjusts the suction fan 11 of the flue gas heat tracing introduction device 1 to reduce the heat exchange flue gas amount, so as to reduce the temperature and avoid overhigh temperature of the inner cavity of the insulator chamber; similarly, when the environment temperature of the inner cavity of the insulator chamber is lower than the flue gas temperature by 20 ℃, the heat exchange flue gas volume is increased by adjusting the suction fan 11, and the temperature is reduced to avoid the over-low temperature of the inner cavity of the insulator chamber.
Further, a transparent observation top cover 26 is mounted on the top of the insulator chamber 2, and the transparent observation top cover 26 is grounded through a grounding device 27; in this embodiment, transparent observation top cap 26 adopts transparent high temperature resistant vacuum glass intermediate layer, and the material is high temperature transparent glass, through double-deck vacuum glass, reduces the heat conduction in order to reduce calorific loss, reaches heat retaining effect simultaneously, overhauls and differentiates whether the insulator has faults such as insulator fracture, draws electric arc, dislocation through the naked eye, can realize on-line maintenance and troubleshooting.
Further, flue gas companion's heat induction system 1 includes suction fan 11, first air-supply line 12, second air-supply line 13 and goes out tuber pipe 14, the air inlet end of suction fan 11 through first air-supply line 12 with insert the exhaust end of electrostatic precipitator, the air-out end of suction fan 11 inserts each insulator room 2 respectively through a plurality of second air-supply line 13, the end of giving vent to anger of each insulator room 2 inserts through going out tuber pipe 14 the air inlet end of electrostatic precipitator. In this embodiment, an inlet of the second air inlet pipe 13 is provided with an air distribution box, and an inlet of the air distribution box is connected to the suction fan 11. The air inlet end of the suction fan 11 is also provided with a temperature sensor, a pressure sensor and a flow sensor.
The utility model discloses the working process:
the high-temperature dust-containing flue gas flows into the electric dust remover, and flows out of the electric dust remover after passing through the electric dust remover, the high-temperature flue gas without dust is sucked by the first air inlet pipe 12 of the flue gas heat tracing introduction device 1, and the high-temperature flue gas is sucked, so that the power consumption of high-power electric heating required by sucking air by a conventional method (the electric power of the heated air is about 240KW required by a conventional 300MW unit) is avoided. The high temperature flue gas is carried the flue gas heat preservation coil pipe 22 that gets into insulator room 2 through the pressure differential of high temperature suction fan 11, and the high temperature flue gas keeps or heats whole insulator room 2 through the coil pipe surface area heat transfer to under the heat preservation effect of outer heat preservation chamber 24 and the insulating material who distributes in outer heat preservation chamber 24, can reach high heat transfer effect and high heat preservation effect. The high-temperature flue gas after heat exchange flows back to the interior of the electric dust collector through the air outlet pipe 14, so that the pollution to the environment caused by the discharge of the flue gas is avoided. Meanwhile, the negative pressure in the electric dust collector is generally-2000 to-5000 Pa, and the heat exchange flue gas flows from the inside of the electric dust collector and flows back to the electric dust collector, so that the problem that the pressure difference of a heat exchange system is too large and the power consumption of a fan is high is solved.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (8)
1. The utility model provides a high-voltage insulation exempts from to heat preservation device for high temperature electrostatic precipitator, be equipped with the independent negative pole frame (10) of a plurality of in the electrostatic precipitator, negative high pressure is connected through high-pressure introducing device (30) in each negative pole frame (10), the top of negative pole frame (10) sets up a plurality of and hangs some (20), its characterized in that: high-voltage insulation exempts from to heat preservation device includes flue gas heat tracing introducing device (1) to and set up a plurality of insulator room (2) at each suspension point (20) position, the insulating porcelain bushing (21) that are used for fixed suspension point (20) are installed to the inner chamber of insulator room (2), the inlet end of flue gas heat tracing introducing device (1) inserts the exhaust end of electrostatic precipitator, the end of giving vent to anger of flue gas heat tracing introducing device (1) inserts behind each insulator room (2) heat transfer, the reconnection the inlet end of electrostatic precipitator.
2. The high-voltage insulation heating-free heat preservation device for the high-temperature electric dust remover as claimed in claim 1, characterized in that: the inner wall of the insulator chamber (2) is provided with a smoke heat-insulating coil pipe (22), the smoke heat-tracing introducing device (1) is connected with the smoke heat-insulating coil pipe (22), and high-temperature smoke is introduced into the smoke heat-insulating coil pipe (22) to exchange heat with the insulator chamber (2).
3. The high-voltage insulation heating-free heat preservation device for the high-temperature electric dust remover as claimed in claim 2, characterized in that: the insulator chamber (2) comprises an inner heat preservation cavity (23) and an outer heat preservation cavity (24) which are sequentially arranged from inside to outside, the smoke heat preservation coil pipe (22) is arranged in the inner heat preservation cavity (23) in a spiral mode, and heat preservation cotton is arranged in the outer heat preservation cavity (24).
4. The high-voltage insulation heating-free heat preservation device for the high-temperature electric dust remover as claimed in claim 3, wherein: the inner heat preservation cavity (23), the outer heat preservation cavity (24) and the flue gas heat preservation coil pipe (22) are all grounded through a grounding device (27).
5. The high-voltage insulation heating-free heat preservation device for the high-temperature electric dust remover as claimed in claim 1 or 2, wherein: the insulation chamber (2) is further provided with an online temperature measuring device (25) and a control unit, the online temperature measuring device (25) is used for monitoring the temperature of the inner cavity environment of the insulation chamber (2) on line, and the control unit is connected with the online temperature measuring device (25) and the smoke heat tracing introduction device (1).
6. The high-voltage insulation heating-free heat preservation device for the high-temperature electric dust remover as claimed in claim 1 or 2, wherein: and a transparent observation top cover (26) is installed at the top of the insulator chamber (2), and the transparent observation top cover (26) is grounded through a grounding device (27).
7. The high-voltage insulation heating-free heat preservation device for the high-temperature electric dust remover as claimed in claim 1, wherein: flue gas heat tracing introducing device (1) includes suction fan (11), first air-supply line (12), second air-supply line (13) and goes out tuber pipe (14), the air inlet end of suction fan (11) is through first air-supply line (12) and access the exhaust end of electrostatic precipitator, the air-out end of suction fan (11) inserts each insulator room (2) respectively through a plurality of second air-supply line (13), the end of giving vent to anger of each insulator room (2) inserts through going out tuber pipe (14) the air inlet end of electrostatic precipitator.
8. The high-voltage insulation heating-free heat preservation device for the high-temperature electric dust remover as claimed in claim 7, wherein: the air inlet end of the suction fan (11) is also provided with a temperature sensor, a pressure sensor and a flow sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222325426.7U CN218167360U (en) | 2022-09-01 | 2022-09-01 | High-voltage insulation heating-free heat preservation device for high-temperature electric dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222325426.7U CN218167360U (en) | 2022-09-01 | 2022-09-01 | High-voltage insulation heating-free heat preservation device for high-temperature electric dust collector |
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| Publication Number | Publication Date |
|---|---|
| CN218167360U true CN218167360U (en) | 2022-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222325426.7U Active CN218167360U (en) | 2022-09-01 | 2022-09-01 | High-voltage insulation heating-free heat preservation device for high-temperature electric dust collector |
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| Country | Link |
|---|---|
| CN (1) | CN218167360U (en) |
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2022
- 2022-09-01 CN CN202222325426.7U patent/CN218167360U/en active Active
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