CN218295766U - Dust conveying communicating device between electric dust removing and dust collecting hoppers and electrostatic dust removing system - Google Patents
Dust conveying communicating device between electric dust removing and dust collecting hoppers and electrostatic dust removing system Download PDFInfo
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- CN218295766U CN218295766U CN202222485374.XU CN202222485374U CN218295766U CN 218295766 U CN218295766 U CN 218295766U CN 202222485374 U CN202222485374 U CN 202222485374U CN 218295766 U CN218295766 U CN 218295766U
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Abstract
The application discloses an ash conveying communication device between electric dust removal ash hoppers, and relates to the technical field of dry ash conveying of coal-fired thermal power plants; the electric field ash bucket is arranged between an electric field ash bucket and comprises a communicating pipeline, one end part of the communicating pipeline is communicated with the electric field ash bucket, the other end of the communicating pipeline is communicated with the electric field ash bucket, the end part of the communicating pipeline, which is connected with the electric field ash bucket, is higher than the other end part, and the inclination angle of the communicating pipeline is larger than the repose angle of ash. The electric field ash bucket is communicated with the two electric field ash buckets through the communicating pipeline, waste of compressed air can be reduced when the unit is in low load, and working stability of the unit and an electric field is improved.
Description
Technical Field
The application relates to the technical field of dry ash conveying of coal-fired thermal power plants, in particular to a patent name.
Background
Four or five electric fields are generally arranged from a flue gas inlet to an outlet of the coal-fired power plant for electric dust removal, wherein the dust collection amount of one electric field is the largest and can account for 80% of the dust collection amount of the whole electric dust removal, the second electric field is 15%, and the third electric field, the fifth electric field and the fifth electric field mainly collect fine dust and account for 5% of the total dust amount. An ash bucket is arranged below the electric field, a bin pump is arranged below the ash bucket, dust collected by the electric field falls into the ash bucket, and the ash in the ash bucket enters the bin pump and is conveyed to an ash bin by compressed air. The design output of the bin pump below the electric field ash bucket corresponds to the dust collection amount of the electric dust removal electric field ash bucket, and the electric field I is the largest, the electric field II is the second, and the electric fields III, IV and V are reduced in sequence. The following problems currently exist:
when the unit is under low load, the smoke gas quantity is reduced, the ash collecting quantity of the electric field is reduced, the ash quantity falling into the ash bucket is correspondingly reduced, and the ash conveying quantity of the bin pump is greatly reduced compared with the ash conveying quantity under full load. At this time, the ash in the two electric field ash hoppers can be conveyed away by the output of the one electric field ash hopper bin pump, but the ash in the two electric field ash hoppers cannot be conveyed to the one electric field ash hopper because the two electric field ash hoppers are independent in design, so the two electric field ash hopper bin pumps also have to operate, and the waste of ash conveying compressed air is caused.
When an electric field of the electric dust collector breaks down, the electric dust collector cannot be put into operation, the two electric fields can bear the dust collecting function of the electric field, 80% of dust can be collected, but the bin pump output of the two electric fields cannot meet the requirement at the moment, so that the dust in the dust buckets of the two electric fields cannot be conveyed away in time, and finally the dust buckets are full of dust, and the electric dust collector trips. After the second electric field trips, the third electric field takes the function of the first electric field, because the force of the bin pump is smaller, the ash bucket is filled with ash quickly, the electric field trips, and after the first electric field and the second electric field trip, the dust discharge exceeds the standard, the electric field has to be stopped to eliminate the defects, and the electric field operation is recovered.
The prior art scheme which is found to be relatively close to the field through retrieval is as follows:
patent document No. CN 210594254U's patent document discloses a prevent blockking up coal fired power plant electrostatic precipitator ash conveying system, including setting up at the surge bin of electrostatic precipitator ash bucket below and setting up the ash conveying pipeline in the surge bin below, the one end of ash conveying pipeline is provided with the ash storehouse, and other end lateral wall circumference evenly is provided with a plurality of main air intakes, and the both sides of every main air intake all are provided with the aviation baffle, and the aviation baffle is with the air inlet direction adjustment of each main air intake for along the clockwise or anticlockwise direction of ash conveying pipeline. The ash conveying system of the electric dust collector with the structure avoids the blockage of an ash conveying pipeline and ensures the dust removal efficiency and effect of the unit. However, the scheme can not solve the problem that compressed air is wasted by all bin pumps when the unit is under low load, and can not solve the problem that the electric field trips because of dust accumulation of the two electric field dust hoppers caused by the fault of the electric field.
The patent document with the publication number of CN213010753U discloses an ash conveying system for controlling the material level of an electric dust and ash removing hopper of a power plant, which comprises a plurality of ash conveying units, wherein each ash conveying unit comprises a plurality of ash hoppers, the ash hoppers are communicated with ash conveying branch pipes below the ash hoppers through ash conveying branch pipes, one ends of the ash conveying branch pipes are communicated with an ash conveying main pipe, the other ends of the ash conveying branch pipes are communicated with a compressed gas inlet pipe, one ends of the ash conveying branch pipes are provided with discharge valves, and the other ends of the ash conveying branch pipes are provided with air inlet valves; an ash conveying bin pump is fixedly arranged on the ash conveying branch pipe, an ash discharge valve is arranged on a pipe section between the ash conveying bin pump and the ash bucket, and a bin pump discharge valve is arranged on a pipe section between the ash conveying bin pump and the ash conveying branch pipe; a material level meter for monitoring the height of ash is vertically and fixedly arranged in the ash hopper. The scheme arranges the ash conveying pipelines according to different ash production amounts of different electric fields, eliminates the phenomenon of system pipeline congestion, and reduces the consumption of energy and capital.
The two schemes still cannot solve the problem that compressed air is wasted by all bin pumps when the unit is under low load, and the phenomenon that the electric field trips because of dust accumulation of the two electric field dust hoppers caused by the fault of the electric field cannot be solved.
SUMMERY OF THE UTILITY MODEL
In order to reduce the waste to compressed air when the unit low-load, improve the stability of power plant's operation, this application provides a defeated ash UNICOM device and power plant dust pelletizing system between electric precipitation ash bucket.
First aspect, the utility model discloses an ash conveying UNICOM device between electric precipitation ash bucket adopts following technical scheme:
the utility model provides an defeated grey UNICOM device between electric precipitation ash bucket, its setting is between an electric field ash bucket and two electric field ash buckets, defeated grey UNICOM device includes the intercommunication pipeline, a tip of intercommunication pipeline with an electric field ash bucket UNICOM, the other end of intercommunication pipeline with two electric field ash buckets UNICOM, the tip that two electric field ash buckets are connected to the intercommunication pipeline is higher than another tip, the angle of inclination of intercommunication pipeline is greater than grey angle of repose.
By adopting the technical scheme: when the load of unit is less, the filterable dust volume of an electric field reduces, the ash volume that falls into the ash bucket of this electric field below also correspondingly reduces, can stop the storehouse pump that two electric fields correspond this moment, when the ash volume in two electric field ash buckets reaches the tie point of communicating pipe and two electric field ash buckets, the ash in two electric field ash buckets will fall into an electric field ash bucket along the communicating pipe, can only utilize the great powerful storehouse pump that an electric field corresponds to carry out the ash conveying, thereby the phenomenon that a plurality of storehouse pumps worked simultaneously and lead to high energy consumption has been reduced. In addition, when an electric field breaks down and stops working, the dust collecting amount of the two electric field dust hoppers is increased, dust in the two electric field dust hoppers can be conveyed into the electric field dust hopper through the communicating pipeline, and dust is conveyed by using the bin pump corresponding to the electric field, so that the phenomenon of stopping due to full hopper is reduced.
The further technical scheme is as follows: the side wall of the communicating pipeline is fixedly connected with a gasification plate, and the gasification plate is communicated with the inside of the communicating pipeline; the gasification plate is connected with a gasification fan.
By adopting the technical scheme: the gasification fan can blow high-temperature wind power into the communicating pipeline through the gasification plate, and the flowability of dust in the communicating pipeline can be improved.
The further technical scheme is as follows: the gasification plate is arranged on the lower side surface of the communication pipeline.
By adopting the technical scheme: the gasification plate is arranged on the lower side surface of the communicating pipeline, so that dust can be prevented from being adhered to the lower side wall of the communicating pipeline, and the flowability of the dust in the communicating pipeline is further improved.
The further technical scheme is as follows: the outer surface of the communicating pipeline is wrapped with a heat-insulating layer.
By adopting the technical scheme: the higher the temperature of dust, its mobility is better, and the setting of heat preservation can reduce the temperature loss of intercommunication pipeline, keeps the higher temperature of dust in the intercommunication pipeline, and then keeps the mobility of dust.
The further technical scheme is as follows: and a gate valve is arranged on the communicating pipeline and is close to the end part of the communicating pipeline connected with the two electric field ash hoppers.
By adopting the technical scheme: the setting of slide valve can control communicating pipe's switch-on and block, and when each electric field and unit all were in normal condition, the communicating pipe was blocked to the accessible slide valve, reduces the influence between the adjacent ash bucket.
The further technical scheme is as follows: the gate valve is driven by electricity to open and close.
By adopting the technical scheme: the gate valve is driven by electric power, so that the gate valve can be remotely controlled by workers, the operation efficiency is improved, and the labor intensity is reduced.
In a second aspect, the electrostatic dust removal system disclosed in the present application adopts the following technical scheme:
an electrostatic precipitator system, includes electrostatic precipitator equipment, electrostatic precipitator equipment include as in any one of the first aspect defeated grey UNICOM device between electric precipitation ash bucket.
In summary, the present application has at least one of the following advantages:
1. the setting of intercommunication pipeline can be with two adjacent ash buckets UNICOM, when preventing that the electric field that corresponds from going wrong, the ash bucket that next electric field corresponds is full of the ash fast, improves the reliability of power plant and dust pelletizing system operation.
2. The gasification plate and the gasification fan are arranged, so that the flowability of dust in the communicating pipeline can be improved, the lower side surface of the dust in the communicating pipeline is prevented from being accumulated, meanwhile, the gasification fan can blow hot air, the temperature of the dust is prevented from being rapidly reduced, the dust is kept at a higher temperature, and the good flowability is further kept.
Drawings
FIG. 1 is a schematic view of a prior art electrostatic precipitation configuration;
FIG. 2 is a schematic view of an overall structure provided in embodiment 1 of the present application;
FIG. 3 is a schematic view of an overall structure provided in embodiment 2 of the present application;
fig. 4 is a schematic view of an overall structure provided in embodiment 3 of the present application.
Wherein: 1. a communicating pipe; 11. an electric field ash bucket; 12. two electric field ash hoppers; 2. a gasification plate; 3. A gasification fan; 4. a gate valve.
Detailed Description
At first do simple introduction to coal fired power plant's electric precipitation, the produced flue gas of coal fired power plant removes dust through flue gas pipeline transport to electrostatic precipitator device, as shown in fig. 1, electrostatic precipitator device has a plurality of next-door neighbour's electric field usually, including an electric field, two electric fields, three electric fields etc. an electric field is located the upper reaches of flue gas passageway, each electric field below corresponds there is the ash bucket, each ash bucket has the storehouse pump and the ash conveying pipeline of different power, be used for carrying the dust to the ash storehouse, the gas that is purified passes through cyclone or chimney discharge.
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
Example 1:
the application discloses patent ash conveying UNICOM device between electric precipitation ash bucket, it sets up between two adjacent electric field ash buckets 11 and two electric field ash buckets 12. One electric field ash bucket 11 is positioned below one electric field, and two electric field ash buckets 12 are positioned below the two electric fields. Referring to fig. 2, the communicating device includes a communicating pipe 1, one end of the communicating pipe 1 is communicated with an electric field ash bucket 11, the other end of the communicating pipe 1 is communicated with two electric field ash buckets 12, the end of the communicating pipe 1 connected with the two electric field ash buckets 12 is higher than the other end, and the inclination angle of the communicating pipe 1 is larger than the repose angle of ash.
The communicating pipeline 1 may be a single pipe or a plurality of independent pipelines, and the communicating pipeline 1 may be a circular pipe or a rectangular pipeline, and is used for conveying the ash in the two electric field ash hoppers 12 to the one electric field ash hopper 11.
When the load of unit is less, the filterable dust volume of an electric field reduces, the ash volume that falls into the ash bucket of this electric field below also reduces correspondingly, can close the storehouse pump that two electric fields correspond this moment, when the ash volume in two electric field ash buckets 12 highly reaches the tie point of communicating pipe 1 and two electric field ash buckets 12, because the angle of inclination of communicating pipe 1 is greater than the angle of repose of dust, the ash in two electric field ash buckets 12 will be through self weight constantly fall into an electric field ash bucket 11 along communicating pipe 1, can only utilize the pump in the great powerful storehouse that an electric field corresponds to carry out the ash conveying, thereby reduced the phenomenon that a plurality of storehouse pumps worked simultaneously and lead to high energy consumption, reduce compressed air's consumption. In addition, when an electric field breaks down and stops working, the dust collecting amount of the two electric field dust hoppers 12 is increased, dust in the two electric field dust hoppers 12 can be conveyed into the one electric field dust hopper 11 through the communication pipeline 1, dust is conveyed by using a bin pump corresponding to the electric field, and the phenomenon that the two electric field dust hoppers 12 stop working due to full hoppers is reduced.
Example 2
In this embodiment, a further improvement is provided on the basis of embodiment 1, referring to fig. 3, a gasification plate 2 is fixedly connected to a side wall of the communicating pipe 1, the gasification plate 2 is disposed at a lower side surface of the communicating pipe 1, the gasification plate 2 is communicated with an inside of the communicating pipe 1, and the gasification plate 2 is connected to a gasification fan 3 through an air duct 21. Wherein, the gasification fan 3 is a roots type blower. Thus, dust can be prevented from adhering to the lower side wall of the communicating pipe 1, and the fluidity of dust in the communicating pipe 1 can be improved. The air volume blown by the Roots blower is slightly small, the temperature is high, and the wind power blown by the Roots blower is blown into the communicating pipeline 1 through the air duct 21 and the gasification plate 2, so that the flowability of dust in the communicating pipeline 1 can be improved, and the accumulation of the dust in the communicating pipeline 1 due to overlarge amount is prevented.
Further, the outer surface of the communicating pipeline 1 is wrapped with a heat-insulating layer. Specifically, the heat insulation layer can be any one of polyurethane foam coiled pipes, aerogel felts, glass wool, rock wool and the like with heat insulation performance.
It will be appreciated that the flue gas dust temperature at the point of discharge is relatively high, approaching 100 degrees celsius, and that the higher the flue gas dust temperature, the better the flow. The setting of heat preservation can reduce the quick loss of communicating pipe 1 and its inside dust temperature, keeps the higher temperature and the good mobility of dust.
Example 3
The present embodiment is further improved on the basis of embodiment 2, referring to fig. 4, a gate valve 4 is arranged on the communicating pipe 1, and the gate valve 4 is close to the end of the communicating pipe 1 connected with the two-electric field ash bucket 12. Like this, can control the switch-on of intercommunication pipeline 1 and block, when each electric field and unit all are in normal condition, accessible slide valve 4 blocks intercommunication pipeline 1, reduces the influence between the adjacent ash bucket.
Further, the gate valve 4 is an electric gate valve 4, namely, the gate valve 4 is driven by electricity. Like this, can make the staff long-rangely control slide valve 4, improve operating efficiency, reduce intensity of labour.
Based on same design, this application embodiment still discloses an electrostatic precipitator system, and this system includes electrostatic precipitator equipment and a plurality of ash buckets, is equipped with as aforementioned electric precipitation ash bucket between the adjacent ash bucket defeated grey UNICOM device.
At present, the technical scheme of the application has been subjected to a pilot plant test, namely a small-scale test of a product before large-scale mass production; after the pilot plant test is finished, user use investigation is developed in a small range, and the investigation result shows that the user satisfaction is high; the preparation of products for formal production for industrialization (including intellectual property risk early warning research) has been started.
Claims (7)
1. The utility model provides an defeated ash UNICOM device between electric precipitation ash bucket, its setting is between an electric field ash bucket (11) and two electric field ash buckets (12), its characterized in that: the ash conveying communicating device comprises a communicating pipeline (1), one end part of the communicating pipeline (1) is communicated with the electric field ash hopper (11), the other end of the communicating pipeline (1) is communicated with the two electric field ash hoppers (12), the end part of the communicating pipeline (1) connected with the two electric field ash hoppers (12) is higher than the other end part, and the inclination angle of the communicating pipeline (1) is larger than the repose angle of ash.
2. The ash conveying communication device between the electric dust removing hoppers according to the claim 1, characterized in that: the side wall of the communicating pipeline (1) is fixedly connected with a gasification plate (2), and the gasification plate (2) is communicated with the inside of the communicating pipeline (1); the gasification plate (2) is connected with a gasification fan (3).
3. The ash conveying communication device between the electric dust removing ash buckets as claimed in claim 2, is characterized in that: the gasification plate (2) is arranged on the lower side surface of the communication pipeline (1).
4. The ash conveying and communicating device between the electric dust removing hoppers as claimed in claim 1 or 3, wherein: the outer surface of the communicating pipeline (1) is wrapped with a heat-insulating layer.
5. The ash conveying communication device between the electric dust removing hoppers according to claim 4, characterized in that: the communicating device is provided with a gate valve (4), and the gate valve (4) is close to the end part where the communicating pipeline (1) is connected with the two electric field ash buckets (12).
6. The ash conveying communication device between the electric ash removal hoppers as claimed in claim 5, characterized in that: the gate valve (4) is driven to open and close by electric power.
7. An electrostatic precipitator system which characterized in that: the electrostatic dust collection device comprises electrostatic dust collection equipment and a plurality of ash hoppers, wherein the ash conveying communication device between the two adjacent ash hoppers is arranged according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222485374.XU CN218295766U (en) | 2022-09-20 | 2022-09-20 | Dust conveying communicating device between electric dust removing and dust collecting hoppers and electrostatic dust removing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222485374.XU CN218295766U (en) | 2022-09-20 | 2022-09-20 | Dust conveying communicating device between electric dust removing and dust collecting hoppers and electrostatic dust removing system |
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| Publication Number | Publication Date |
|---|---|
| CN218295766U true CN218295766U (en) | 2023-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222485374.XU Active CN218295766U (en) | 2022-09-20 | 2022-09-20 | Dust conveying communicating device between electric dust removing and dust collecting hoppers and electrostatic dust removing system |
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| CN (1) | CN218295766U (en) |
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- 2022-09-20 CN CN202222485374.XU patent/CN218295766U/en active Active
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