CN220617555U - Internal bypass dense-phase pneumatic conveying system - Google Patents
Internal bypass dense-phase pneumatic conveying system Download PDFInfo
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- CN220617555U CN220617555U CN202321506636.4U CN202321506636U CN220617555U CN 220617555 U CN220617555 U CN 220617555U CN 202321506636 U CN202321506636 U CN 202321506636U CN 220617555 U CN220617555 U CN 220617555U
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- ash
- area
- bag
- conveying
- pipe
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- 230000005684 electric field Effects 0.000 claims abstract description 26
- 238000012423 maintenance Methods 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 238000007599 discharging Methods 0.000 abstract description 4
- 238000005243 fluidization Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 75
- 239000000463 material Substances 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Abstract
The utility model discloses an internal bypass dense-phase pneumatic conveying system, and relates to the technical field of energy power; the utility model comprises three ash vaults, wherein the outer sides of the three ash vaults are provided with ash conveying pipelines which are inner bypass pipes, the conveying adopts an inner bypass dense-phase pneumatic conveying mode, one end of each ash conveying pipeline far away from the ash vaults is provided with an electric field area, a first bag area, a second bag area and a third bag area, the ash conveying pipelines are arranged into inner bypass pipes which are specially designed, the original three ash conveying main pipes of the original system are changed into two ash conveying main pipes, the original pressure conveying bin pumps are utilized to carry out technical transformation on the pressure conveying bin pumps, an internal fluidization device is added, a discharging tee joint is arranged at the bottom of each ash conveying pipeline, and an air ash mixer is additionally arranged on an air inlet pipe of each air ash mixer to enable ash to be fully mixed, so that the conveying pipeline has a self-adjusting dynamic blowing blocking function.
Description
Technical Field
The utility model relates to the technical field of energy power, in particular to an internal bypass dense-phase pneumatic conveying system.
Background
The original ash conveying system adopts a positive pressure dense phase pneumatic conveying technology, a common seamless steel pipe single pipe is used for conveying ash, the number of required conveying main pipes is large, the requirements on quality and stability of a conveying air source are high, the fluidization degree is high, the flow speed is high, the ash is washed by powder ash, the abrasion of pipe walls is serious, the pipe blockage is easy to occur when the ash flow is large, the pipe blockage position is not well judged, the cleaning is difficult, the abrasion of a pipe valve system is reduced, the air consumption is reduced, the pressure of the conveying air source is reduced, the operation of the ash conveying system is ensured to be stable and reliable, the daily maintenance workload is reduced, and the inventor proposes an inner bypass dense phase pneumatic conveying system for solving the problems.
Disclosure of Invention
In order to solve the problems of abrasion of a pipe valve system, high gas consumption, high pressure of a conveying gas source, unstable and reliable operation of an ash conveying system and high daily maintenance workload; the utility model aims to provide an internal bypass dense-phase pneumatic conveying system.
In order to solve the technical problems, the utility model adopts the following technical scheme: the inner bypass dense-phase pneumatic conveying system comprises three ash vaults, wherein the three ash vaults are divided into a first ash vault, a second ash vault and a third ash vault, ash conveying pipelines are arranged on the outer sides of the ash vaults, each ash conveying pipeline comprises a first pipe and a second pipe, each first pipe is connected with the corresponding first ash vault and the corresponding second ash vault, each second pipe is connected with the corresponding second ash vault and the corresponding third ash vault, one end, far away from the ash vault, of each ash conveying pipeline is provided with an electric field area, a bag area, two bag areas and three bag areas, each electric field area, each bag area, each two sending tanks of the electric field area, each two sending tanks of the first bag area and four sending tanks of the three bag areas form a first conveying unit, each three first conveying units are connected with the corresponding first pipe, each remaining two sending tanks of the first bag area and each four sending tanks of the second bag area form a second conveying unit, and each three sending tanks of the second bag area are connected with each second conveying unit.
Preferably, the first pipe and the second pipe are inner bypass pipes, an inner bypass dense-phase pneumatic conveying mode is adopted in conveying, and the pipe diameters of the initial section and the final section of the first pipe and the second pipe are DN150 and DN175 respectively.
Preferably, the tops of the first warehouse, the second warehouse and the third warehouse are respectively provided with a corresponding switching valve.
Preferably, the volumes of the transmitting tanks of the electric field areas are all 3.0m 3 The volumes of the sending tanks of the first bag area and the second bag area are 1.5m 3 The volumes of the sending tanks of the three bag areas are all 1.0m 3 。
Preferably, the feed inlets of the sending tanks in the electric field area, the first bag area, the second bag area and the third bag area are respectively provided with a feed valve, the upper parts of the sending tanks in the electric field area, the first bag area, the second bag area and the third bag area are respectively provided with a manual maintenance valve, expansion joints are arranged between the feed valves and the manual maintenance valves, and the sending tanks in the electric field area, the first bag area, the second bag area and the third bag area are respectively provided with an air ventilation valve.
Preferably, the starting ends of the first pipe and the second pipe are respectively provided with an air ash mixer and a valve accessory.
Preferably, a T-shaped pipe is arranged at the top of the ash bin.
Preferably, the tail ends of the first pipe and the second pipe are respectively provided with a pneumatic shunt valve.
Compared with the prior art, the utility model has the beneficial effects that:
the system realizes steady-state conveying through the self-adjusting inner bypass pipe of the conveying pipeline and prevents the occurrence of pipe blockage. When the ash materials conveyed at low speed in the main conveying pipeline accumulate and possibly block the pipe, the resistance of the main conveying pipe is increased, the air flow rate entering the bypass pipe is greatly increased, the air flow rate in the bypass pipe is rapidly increased, the pressure difference generated by two adjacent opening air flow jet flows in the bypass pipe in the area is larger than the pressure required for pushing a material section between two points, so that the accumulated ash materials are pushed forward, and the accumulated ash materials are separated and blown away by the air which is re-flowed into the main conveying pipe by the bypass pipe, and form turbulent flow in the area. Thus, the material sections are continuously accumulated, divided, moved and blown away, and the ash materials are continuously conveyed forwards by the reciprocating circulation. Compared with the conventional system, the inner bypass pipe low-speed dense-phase conveying system is characterized in that the ash conveying is truly operated in a low-speed state; because of the low speed and stable state, wear on the pipe and elbow can be minimized. Compared with a positive pressure dense phase pneumatic conveying system, the pneumatic conveying system has the advantages that the air consumption is low, the energy consumption is reduced, the farther the conveying distance is, the larger the output force is, the more obvious the economy is, and after the system is put into operation, the pressure floating range of the main pipe of the ash conveying compressed air is shortened from 250 to 550kPa to 450 to 550kPa, so that the air consumption is reduced.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of the system of the present utility model.
Fig. 2 is a schematic top view of the present utility model.
Fig. 3 is a schematic side view of the present utility model.
Fig. 4 is a schematic view of the electric field region, the first pocket region, the second pocket region and the third pocket region of the present utility model.
In the figure: 1. an ash warehouse; 2. an ash conveying pipeline; 3. an electric field region; 4. a pocket; 5. two bag areas; 6. three bag areas.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples: as shown in fig. 1-4, the utility model provides an internal bypass dense-phase pneumatic conveying system, which comprises three ash vaults 1 and is characterized in that: the three ash storage 1 is divided into a first storage, a second storage and a third storage, the outside of the three ash storage 1 is provided with an ash conveying pipeline 2, the ash conveying pipeline 2 comprises a first pipe and a second pipe, the first pipe is connected with the first storage and the second storage, the second pipe is connected with the second storage and the third storage, the first pipe and the second pipe are both inner bypass pipes, an inner bypass dense-phase pneumatic conveying mode is adopted in conveying, one end of the ash conveying pipeline 2 far away from the ash storage 1 is provided with an electric field area 3, a first bag area 4, a second bag area 5 and a third bag area 6, the electric field area 3, the first bag area 4, the second bag area 5 and the third bag area 6 all comprise four sending tanks, the two sending tanks of the electric field area 3, the two sending tanks of the first bag area 4 and the four sending tanks of the third bag area 6 respectively form a first conveying unit, and three first conveying units are connected with a first pipe, two remaining sending tanks in the electric field area 3, two remaining sending tanks in the first bag area 4 and four sending tanks in the second bag area 5 respectively form a second conveying unit, and the three second conveying units are connected with the second pipe, the ash conveying pipeline 2 is changed into a specially designed inner bypass pipe, the original three ash conveying main pipes of the original system are changed into two ash conveying pipelines 2, the original pressure conveying bin pump is utilized to carry out technical transformation on the pressure conveying bin pump, an internal fluidization device is added, a discharging tee joint is designed at the bottom, an ash mixer is additionally arranged on each ash conveying pipeline, so that ash and gas can be fully mixed, and a main mixing valve group and an auxiliary mixing valve group are arranged on an air inlet pipe of the ash mixer, so that the conveying pipeline has a self-adjusting dynamic blowing blocking function.
The pipe diameters of the initial section and the final section of the first pipe and the second pipe are DN150 and DN175 respectively, and the flow velocity is further reduced through one-time diameter changing, so that the abrasion of the pipeline can be reduced.
The tops of the first warehouse, the second warehouse and the third warehouse are respectively provided with a corresponding switching valve, and fly ash can be sent into the corresponding ash warehouse 1 for storage according to the needs.
The volumes of the transmitting tanks of the electric field area 3 are all 3.0m 3 The volumes of the sending tanks of the first bag area 4 and the second bag area 5 are 1.5m 3 The volumes of the sending tanks of the three bag areas 6 are all 1.0m 3 。
The electric field area 3, the first bag area 4, the second bag area 5 and the third bag area 6 are provided with ventilation valves on the sending tanks, the feeding ports of the sending tanks of the electric field area 3, the first bag area 4, the second bag area 5 and the third bag area 6 are provided with feeding valves, the upper parts of the sending tanks of the electric field area 3, the first bag area 4, the second bag area 5 and the third bag area 6 are provided with manual maintenance valves, expansion joints are arranged between the feeding valves and the manual maintenance valves, and the transverse and vertical displacement caused by the cold state and the hot state of the electric dust removal can be absorbed.
The starting ends of the first pipe and the second pipe are respectively provided with an air-ash mixer and a valve accessory, so that the ash-air ratio in the ash conveying pipeline 2 is automatically adjusted, and the ash conveying can not be blocked under the conditions of high concentration and low flow rate.
The top of the ash warehouse is provided with a T-shaped pipe for buffering the ash gas mixture, so that fly ash freely falls into the ash warehouse 1, and the flying of ash in the warehouse and the abrasion of the ash warehouse 1 are relieved.
The tail ends of the first pipe and the second pipe are respectively provided with a pneumatic shunt valve, so that fly ash enters the corresponding ash warehouse 1.
Delivery system performance assurance value:
the conveying system conveys data:
air source quality requirements of a conveying system:
the compressed air is supplied by the original air compressor station in the factory, the pneumatic ash conveying and conveying amount of the #2 dust remover is about 26m3/min, and the dust is connected from the original air source main pipe. The original gas source is adopted as the gas for the instrument.
The oil content of the ash conveying gas is less than or equal to 5ppm, the water content is less than or equal to 1.0g/m < 3 >, and the pressure is more than or equal to 0.5Mpa; the oil content of the control gas for the instrument is less than or equal to 0.1ppm, the water content is less than or equal to 0.1g/m < 3 >, the particle size of solid and liquid particles is less than or equal to 1 mu m, the concentration is less than or equal to 1mg/m < 3 >, and the pressure is 0.5-0.65 Mpa.
Working principle: opening a ventilation valve of the unit, and opening a feeding valve, wherein both valves indicate that the sending tank is filled with ash; the ventilation valve is opened; the material level indicator of the sending tank sends a signal, the ash loading time is up or the soft manual unit is triggered; closing the ventilation valves and the feed valves of all the sending tanks; after the program is finished, waiting for ash delivery, if other units of the main pipe do not deliver ash, and delivering ash to the unit; after all the feeding valve closing signals return, opening the unit ash conveying and discharging valve; after the discharge valve is opened, an air inlet valve of the unit is opened, and ash conveying is started; opening a main air inlet valve of the ash mixer; the ash conveying process is automatically controlled in a pressure mode; when the ash conveying pressure is reduced to the ash conveying end, delaying 30S to stop the system for ash conveying and automatically stopping the system program; sequentially closing the unit air inlet valves, closing the main air inlet valve of the ash mixer, and fully closing in place; delay (30-60) S closes the ash conveying and discharging valve, and unit ash conveying is finished; after the unit ash conveying is finished, the ventilation valve of the sending tank is opened, and after the ventilation valve is opened in place, the feeding valve of the sending tank is opened, and the next round of ash loading and ash conveying processes are performed.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. The inner bypass dense-phase pneumatic conveying system comprises three ash vaults (1), and is characterized in that: the three ash storage (1) is divided into a first storage, a second storage and a third storage, the three ash storage (1) is provided with an ash conveying pipeline (2) at the outer side, the ash conveying pipeline (2) comprises a first pipe and a second pipe, the first pipe is connected with the first storage and the second storage, the second pipe is connected with the second storage and the third storage, one end of the ash conveying pipeline (2) far away from the ash storage (1) is provided with an electric field area (3), a bag area (4), a second bag area (5) and a third bag area (6), and the electric field area (3), the first bag area (4), the second bag area (5) and the third bag area (6) all comprise four sending tanks, the electric field area (3) two send jar, the two send jar of a bag district (4) and the four send jar of three bag district (6) respectively constitute a first conveying unit, and three first conveying unit and a union coupling, the electric field area (3) is left two send jar, the left two send jar of a bag district and two four send jar of bag district respectively constitute a second conveying unit, and three second conveying unit and No. two union coupling, no. one pipe and No. two pipe are interior bypass pipe, and carry and adopt the dense looks air conveying mode of interior bypass.
2. The internal bypass dense phase pneumatic conveying system of claim 1 wherein the first and second pipes have a starting pipe diameter and a final pipe diameter of DN150 and DN175, respectively.
3. The internal bypass dense-phase pneumatic conveying system of claim 1, wherein the tops of the first reservoir, the second reservoir and the third reservoir are respectively provided with a corresponding switching valve.
4. An internal bypass dense phase pneumatic conveying system as claimed in claim 1, characterized in that the volumes of the sending tanks of the electric field zone (3) are all 3.0m 3 The volume of the sending tank of the first bag area (4) and the second bag area (5) is 1.5m 3 The volume of the sending tank of the three bag areas (6) is 1.0m 3 。
5. The internal bypass dense-phase pneumatic conveying system according to claim 1, wherein the feed inlets of the sending tanks of the electric field area (3), the first bag area (4), the second bag area (5) and the third bag area (6) are respectively provided with a feed valve, the upper parts of the sending tanks of the electric field area (3), the first bag area (4), the second bag area (5) and the third bag area (6) are respectively provided with a manual maintenance valve, expansion joints are arranged between the feed valves and the manual maintenance valves, and the sending tanks of the electric field area (3), the first bag area (4), the second bag area (5) and the third bag area (6) are respectively provided with an air ventilation valve.
6. The internal bypass dense phase pneumatic conveying system of claim 1 wherein the initial ends of the first pipe and the second pipe are each provided with an air ash mixer and a valve attachment.
7. The internal bypass dense phase pneumatic conveying system of claim 1 wherein a T-pipe is provided at the top of the ash bin.
8. The internal bypass dense phase pneumatic conveying system of claim 1 wherein the ends of the first and second pipes are each provided with a pneumatic shunt valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321506636.4U CN220617555U (en) | 2023-06-14 | 2023-06-14 | Internal bypass dense-phase pneumatic conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321506636.4U CN220617555U (en) | 2023-06-14 | 2023-06-14 | Internal bypass dense-phase pneumatic conveying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220617555U true CN220617555U (en) | 2024-03-19 |
Family
ID=90212706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321506636.4U Active CN220617555U (en) | 2023-06-14 | 2023-06-14 | Internal bypass dense-phase pneumatic conveying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220617555U (en) |
-
2023
- 2023-06-14 CN CN202321506636.4U patent/CN220617555U/en active Active
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