CN202214012U - Pneumatic conveying device - Google Patents
Pneumatic conveying device Download PDFInfo
- Publication number
- CN202214012U CN202214012U CN2011202343309U CN201120234330U CN202214012U CN 202214012 U CN202214012 U CN 202214012U CN 2011202343309 U CN2011202343309 U CN 2011202343309U CN 201120234330 U CN201120234330 U CN 201120234330U CN 202214012 U CN202214012 U CN 202214012U
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- storehouse
- pump
- ash bucket
- air
- level
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Abstract
The utility model discloses a pneumatic conveying device, comprising a bin pump system, an air inlet system, an ash-hopper negative-pressure level gage and a control system. The bin pump system comprises a bin pump, a material inlet valve, a material outlet valve, a bin-pump level gage and a bin pump fluidizing unit. The bin pump is mounted below an ash hopper. The top of the bin pump is connected with a blanking pipe of the ash hopper via the material inlet valve. The bin-pump level gage is arranged on the upper wall of the bin pump. The bin pump fluidizing unit is mounted inside the bin pump. The bottom of the bin pump is connected with the ash hopper via the material outlet valve and a conveying pipeline. An air inlet pipe of the air inlet system is connected with an air compressor via a compressed air main pipe. One end of an air outlet pipe is connected with the bin pump fluidizing unit, and the other end is connected with the conveying pipeline. The ash-hopper negative-pressure level gage is mounted on the lower wall of the ash hopper. The control system is electrically connected with the material inlet valve, the material outlet valve, the bin-pump level gage, the ash-hopper negative-pressure level gage and the various air valves of the air inlet system. The pneumatic conveying device of the utility model is efficient and energy-saving, avoids the 'dry run' phenomenon and reduces wear and energy consumption.
Description
Technical field
The utility model relates to a kind of Pneumatic conveyer, is meant a kind of energy-efficient Pneumatic conveyer especially.
Background technology
Along with the raising of country to the energy-saving and environmental protection requirement; The flying dust that present domestic thermal powerplant all adopts Pneumatic Conveying Technology that dust exhaustor is collected is basically transported, and the air-transport system operation of present domestic thermal powerplant generally has following several stages:
1. charging loitering phase: this stage, all valves all were in closed condition, and flying dust stays in the dust collector ash hopper.This stage is by the charging wait time operation that is provided with.
2. charging stage: the charging wait time is to then opening inlet valve etc. to storehouse pump charging; Adopt fixing feed time and stock position, storehouse to control storehouse pump charging in the charging stage; The ash bucket material level all has neither part nor lot in air-transport system charging control, promptly when the fixedly feed time of storehouse pump setting to or storehouse pump level-sensing device detect material level to the storehouse pump just carry.
3. delivery phase: pump pressurization in storehouse is carried.
But present air-transport system is considered boiler load and ature of coal and changes that for fear of the ash bucket dust stratification, the charging wait time is provided with generally all relatively short; Simultaneously because storehouse pump level-sensing device is operated in the storehouse pump of the high concentration that there is malleation in inside, high-temperature flying dust always and when flying dust is thinner viscosity greatly very easily have material level flase alarm or non-alarm condition again, so fixing feed time setting generally also shorter relatively.To sum up reason because the charging wait time and fixedly feed time all be provided with shortly can occur promptly no matter whether boiler load height, ash bucket ash amount size and storehouse pump completely expect; If the charging wait time that is provided with and fixedly feed time to the storehouse pump just carry; Thus when the lower or ature of coal of boiler load better, the ash amount will cause many times of air-transport system all " the empty race " more after a little while, not only caused system wear but also wasted a large amount of pressurized airs.
The utility model content
The purpose of the utility model is to provide a kind of energy-efficient Pneumatic conveyer.
In order to reach above-mentioned purpose, the solution of the utility model is:
A kind of Pneumatic conveyer comprises that storehouse pumping system, air system, ash bucket negative pressure material level take into account control system; The storehouse pumping system comprises that storehouse pump, inlet valve, bleeder valve, stock position, storehouse take into account storehouse pump fluidizer; The storehouse pump is installed in the ash bucket below; The top of storehouse pump is connected with the tremie pipe of ash bucket through inlet valve; Storehouse pump level-sensing device is installed on the wall on pump top, storehouse, and storehouse pump fluidizer is installed in the inside of storehouse pump, and the bottom of storehouse pump is connected with grey storehouse with delivery duct through bleeder valve; The air inlet pipe of air system is connected with air compressor through the female pipe of pressurized air, and freeing pipe is divided into two, and one is connected with storehouse pump fluidizer and another is connected with delivery duct; Ash bucket negative pressure level-sensing device is installed on the wall of ash bucket bottom; Each air valve that the inlet valve of control system and storehouse pumping system, bleeder valve, storehouse pump level-sensing device, ash bucket negative pressure material level are taken into account air system is electrically connected; With the feedback signal that receives storehouse pump level-sensing device and ash bucket negative pressure level-sensing device and carry out sending command signal after the computing, control each air valve switch of inlet valve, bleeder valve and the air system of storehouse pumping system.
Further, said storehouse pumping system also comprises balance cock, and the top of storehouse pump is through the top of balance cock and balance plumbing connection to ash bucket.
Further, said ash bucket negative pressure material level is counted passive suction type level-sensing device.
Further, the setting height(from bottom) of said ash bucket negative pressure level-sensing device is that 2～6 times of the cooresponding storehouse of ash bucket pump volume are as the criterion according to the ash bucket volume below the setting height(from bottom).
The utility model provides a kind of energy-efficient Pneumatic conveyer, has avoided the generation of " the empty race " phenomenon of air-transport system, has reduced the wearing and tearing and the energy consumption of air-transport system.
The utility model compared with prior art has the following advantages:
One, owing to ash bucket negative pressure level-sensing device has been installed in the ash bucket bottom; Can be provided with the charging wait time through calculating by the ash amount is minimum; Promptly need not to worry the ash bucket dust stratification by the longest setting of charging wait time; Avoided the generation of strength conveying " the empty race " phenomenon simultaneously, effectively reduced system energy consumption, because let the storehouse pumping system carry out charging and conveying as long as ash bucket negative pressure level-sensing device material level alarm control system is promptly assigned instruction.
Two, because ash bucket negative pressure level-sensing device has been installed in the ash bucket bottom, when avoiding strength system " the empty race ", realized that storehouse pump feed time setting is shorter, reduced storehouse pump level-sensing device flase alarm and do not report to the police the influence of storehouse pump charging.
Three, because ash bucket negative pressure level-sensing device can adopt passive suction type level-sensing device; Compare with mechanical type, radio frequency admittance formula and other form level-sensing devices and need not mechanical rotation device and to send measurement signal continuously; Only need to measure the interior suction function power variation of ash bucket that negative pressure level-sensing device pressure sensor receives; Simple in structure, anti-bridging, stable, reliability is high, can avoid the high problem of other form level-sensing device rate of false alarms.
Four, owing to avoided the generation of strength conveying " the empty race " phenomenon, wearing and tearing reduction, the energy consumption of air-transport system are reduced, improved the service life of system zero parts simultaneously.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Label declaration
Ash bucket 1
Ash bucket negative pressure level-sensing device 2
Storehouse pumping system 3 storehouse pumps 31
Equalizing main 36
Air system 4 air inlet pipes 41
Freeing pipe 42,43
Ash storehouse 6.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is carried out detailed explanation:
See also Fig. 1, a kind of Pneumatic conveyer comprises storehouse pumping system 3, air system 4, ash bucket negative pressure level-sensing device 2 and control system (not manifesting in the accompanying drawing).
Storehouse pumping system 3 comprises storehouse pump 31, inlet valve 32, bleeder valve 33, balance cock 34, storehouse pump level-sensing device 35 and storehouse pump fluidizer (be hidden in the storehouse pump 31, do not indicate among the figure).Storehouse pump 31 is installed in ash bucket 1 below; The top of storehouse pump 31 is connected with the tremie pipe of ash bucket 1 through inlet valve 32; Storehouse pump level-sensing device 35 is installed on the wall on storehouse pump 31 tops; Storehouse pump fluidizer is installed in the inside of storehouse pump 31, and the bottom of storehouse pump 31 is connected with grey storehouse 6 with delivery duct 5 through bleeder valve 33, and the top of storehouse pump 31 also is connected to the top of ash bucket 1 through balance cock 34 and equalizing main 36.
The air inlet pipe 41 of air system 4 is through the female pipe of pressurized air (common member; Indicate among the figure) and air compressor (common member; Indicate among the figure) connect, freeing pipe is divided into two, and freeing pipe 42 is connected with storehouse pump fluidizer and another freeing pipe 43 is connected with delivery duct 5.
Ash bucket negative pressure level-sensing device 2 is installed on the wall of ash bucket 1 bottom, and setting height(from bottom) is that 2～6 times of ash bucket 1 cooresponding storehouse pump 31 volumes are as the criterion according to the ash bucket volume below the setting height(from bottom).
Each air valve of the inlet valve 32 of control system and storehouse pumping system 3, bleeder valve 33, balance cock 34, storehouse pump level-sensing device 35, ash bucket negative pressure level-sensing device 2 and air system 3 (common member does not indicate among the figure) is electrically connected.
Ash bucket negative pressure level-sensing device 2 is specially a kind of passive negative pressure level-sensing device that energy consumption is transformed into the ash bucket internal pressure on-off signal and exports that do not have.When the ash position was lower than the inserting tube of ash bucket negative pressure level-sensing device 2 in the ash bucket 1, ash bucket negative pressure level-sensing device 2 pressure sensors received suction function pressure switch action in the ash bucket 1, and the output material level does not arrive signal; When ash bucket 1 ash position is higher than ash bucket negative pressure level-sensing device 2 inserting tubes, because stopping of flying dust acts on the ash bucket negative pressure disappearance on ash bucket negative pressure level-sensing device 2 pressure sensors, pressure switch return, the material level alerting signal that the output material level has arrived.
During the utility model operation; Detect the ash bucket 1 low material level signal feedback of ash bucket negative pressure level-sensing device 2 transmissions when control system after; Send the balance cock 34 of unlatching storehouse pumping system 3 and the instruction of inlet valve 32, open the balance cock 34 and 32 pairs of storehouse pump 31 chargings of inlet valve of storehouse pumping system 3; The storehouse pump of setting when control system fixedly feed time to or control system detect the high charge level signal feedback of storehouse pump level-sensing device 35 transmissions; Then charging finishes; Control system is sent instruction and is closed balance cock 34 and inlet valve 32, each air valve of opening air system 4 and the bleeder valve 33 of storehouse pumping system 3, and the material in the storehouse pump 31 is delivered to grey storehouse 6 through delivery duct 5.
The embodiment that the above is merely the utility model is not to this case design-calculated restriction, and all equivalent variations of doing according to the design key of this case all fall into the protection domain of this case.
Claims (4)
1. Pneumatic conveyer is characterized in that: comprise that storehouse pumping system, air system, ash bucket negative pressure material level take into account control system; The storehouse pumping system comprises that storehouse pump, inlet valve, bleeder valve, stock position, storehouse take into account storehouse pump fluidizer; The storehouse pump is installed in the ash bucket below; The top of storehouse pump is connected with the tremie pipe of ash bucket through inlet valve; Storehouse pump level-sensing device is installed on the wall on pump top, storehouse, and storehouse pump fluidizer is installed in the inside of storehouse pump, and the bottom of storehouse pump is connected with grey storehouse with delivery duct through bleeder valve; The air inlet pipe of air system is connected with air compressor through the female pipe of pressurized air, and freeing pipe is divided into two, and one is connected with storehouse pump fluidizer and another is connected with delivery duct; Ash bucket negative pressure level-sensing device is installed on the wall of ash bucket bottom; Each air valve that the inlet valve of control system and storehouse pumping system, bleeder valve, storehouse pump level-sensing device, ash bucket negative pressure material level are taken into account air system is electrically connected.
2. a kind of Pneumatic conveyer as claimed in claim 1 is characterized in that: said storehouse pumping system also comprises balance cock, and the top of storehouse pump is through the top of balance cock and balance plumbing connection to ash bucket.
3. a kind of Pneumatic conveyer as claimed in claim 1 is characterized in that: said ash bucket negative pressure material level is counted passive suction type level-sensing device.
4. a kind of Pneumatic conveyer as claimed in claim 1 is characterized in that: the setting height(from bottom) of said ash bucket negative pressure level-sensing device is that 2～6 times of the cooresponding storehouse of ash bucket pump volume are as the criterion according to the ash bucket volume below the setting height(from bottom).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202343309U CN202214012U (en) | 2011-07-05 | 2011-07-05 | Pneumatic conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202343309U CN202214012U (en) | 2011-07-05 | 2011-07-05 | Pneumatic conveying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202214012U true CN202214012U (en) | 2012-05-09 |
Family
ID=46013279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202343309U Expired - Fee Related CN202214012U (en) | 2011-07-05 | 2011-07-05 | Pneumatic conveying device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202214012U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285039A (en) * | 2017-06-26 | 2017-10-24 | 华电电力科学研究院 | A kind of Pneumatic ash conveying method and device of thermal power plant's Level control |
| CN107857120A (en) * | 2017-11-16 | 2018-03-30 | 江雄 | Feeding device |
| CN110371680A (en) * | 2019-08-02 | 2019-10-25 | 江苏红光仪表厂有限公司 | A kind of defeated grey on-line measuring device of coal electric force and its logic control power-economizing method |
| CN111846968A (en) * | 2020-08-06 | 2020-10-30 | 福建龙净环保股份有限公司 | Dust conveying system of calcium carbide furnace and operation method of dust conveying system |
| CN114988119A (en) * | 2022-06-15 | 2022-09-02 | 西安西热水务环保有限公司 | Pneumatic conveying system and method suitable for evaporating high-salinity ash from desulfurization wastewater bypass flue gas of thermal power plant |
-
2011
- 2011-07-05 CN CN2011202343309U patent/CN202214012U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285039A (en) * | 2017-06-26 | 2017-10-24 | 华电电力科学研究院 | A kind of Pneumatic ash conveying method and device of thermal power plant's Level control |
| CN107857120A (en) * | 2017-11-16 | 2018-03-30 | 江雄 | Feeding device |
| CN107857120B (en) * | 2017-11-16 | 2024-04-02 | 江雄 | Material conveying device |
| CN110371680A (en) * | 2019-08-02 | 2019-10-25 | 江苏红光仪表厂有限公司 | A kind of defeated grey on-line measuring device of coal electric force and its logic control power-economizing method |
| CN111846968A (en) * | 2020-08-06 | 2020-10-30 | 福建龙净环保股份有限公司 | Dust conveying system of calcium carbide furnace and operation method of dust conveying system |
| CN111846968B (en) * | 2020-08-06 | 2021-12-24 | 福建龙净环保股份有限公司 | Dust conveying system of calcium carbide furnace and operation method of dust conveying system |
| CN114988119A (en) * | 2022-06-15 | 2022-09-02 | 西安西热水务环保有限公司 | Pneumatic conveying system and method suitable for evaporating high-salinity ash from desulfurization wastewater bypass flue gas of thermal power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20160705 |