CN210861172U - One-to-two pulverized coal supply and storage device - Google Patents
One-to-two pulverized coal supply and storage device Download PDFInfo
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- CN210861172U CN210861172U CN201921079830.2U CN201921079830U CN210861172U CN 210861172 U CN210861172 U CN 210861172U CN 201921079830 U CN201921079830 U CN 201921079830U CN 210861172 U CN210861172 U CN 210861172U
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Abstract
The utility model provides a one drags two buggy supply and storage device, include: the powder bin comprises a powder bin body, a bin top dust collector, a powder spraying pipe, a spiral conveyor and two supply channels; the bin top dust collector is arranged on the top of the powder bin body, and the powder spraying pipe is connected with the top of the powder bin body; the bottom of the powder bin body is respectively connected with two supply channels through the spiral conveyor; each supply channel includes: the device comprises a first manual gate valve, an air lock valve, a storage bin, a second manual gate valve, a rotary feeder, a feeding pipe, a pneumatic gate valve and a Roots blower. The utility model provides a one drags two buggy to supply to store up device can supply two boiler operations simultaneously, can also avoid taking place the phenomenon that the unloading is unstable, buggy blocks up, cut-off, and then can avoid taking place boiler deflagration.
Description
Technical Field
The utility model relates to a boiler buggy supplies technical field, especially relates to a one drags two buggy to supply and stores device.
Background
The pulverized coal furnace is a boiler device taking pulverized coal as fuel, and has the advantages of rapid and complete combustion, large capacity, high efficiency, wide coal adaptation range, convenient control and adjustment and the like. The combustion characteristic of the pulverized coal furnace is that fuel enters the combustion chamber together with air and is combusted in a suspension state.
The pulverized coal bunker is a transfer station of fuel, at present, one pulverized coal bunker only has one feeder and can only correspond to the operation of one boiler, and when the boiler has problems, the another boiler cannot be switched to immediately. If two or more boilers operate simultaneously, a plurality of powder bins need to be correspondingly established to form a supply system, which not only brings busyness and inconvenience to maintenance workers, but also increases the cost of the whole construction; and, because the airtight of powder storehouse does not strictly get damp or buggy can lead to the effort increase between the buggy along with the decline of powder height to cause powder blanking jam, cutout scheduling problem, this can bring the puzzlement for the long-term steady operation of boiler, even arouse the detonation of boiler, the urgent need be improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a one drags two buggy to supply and stores up device can supply two boiler operations simultaneously, can also avoid taking place the phenomenon that the buggy blockked up, cut off, and then can avoid taking place boiler deflagration.
The utility model provides a one drags two buggy supply and storage device, include: the powder bin comprises a powder bin body, a bin top dust collector, a powder spraying pipe, a spiral conveyor and two supply channels; the bin top dust collector is arranged on the top of the powder bin body, and the powder spraying pipe is connected with the top of the powder bin body; the bottom of the powder bin body is respectively connected with two supply channels through the spiral conveyor; wherein each supply channel comprises: the device comprises a first manual gate valve, an air lock valve, a storage bin, a second manual gate valve, a rotary blanking device, a blanking pipe, a pneumatic gate valve and a Roots blower; one end of the first manual gate valve is connected with the screw conveyor, the other end of the first manual gate valve is connected with one end of the storage bin through the air locking valve, the other end of the storage bin is connected with one end of the rotary feeder through the second manual gate valve, the other end of the rotary feeder is connected with one end of the pneumatic gate valve through the feeding pipe, and the other end of the pneumatic gate valve is connected with the Roots blower.
Optionally, the powder bin body comprises: a cylindrical bin body and a cone body part; one end of the cylindrical bin body is used as the top of the powder bin body, the other end of the cylindrical bin body is connected with one end of the cone body, and the other end of the cone body is connected with the screw conveyor.
Optionally, the one-to-two pulverized coal supply device further comprises: a blowing fluidizing device; the blowing fluidization device is arranged on the outer wall of the powder bin body and/or the outer wall of the bin.
Optionally, the one-to-two pulverized coal supply device further comprises: and the temperature detection device is arranged on the outer wall of the powder bin body.
Optionally, the number of the temperature detection devices is multiple, and the multiple temperature detection devices are uniformly distributed on the outer wall of the powder bin body.
Optionally, the one-to-two pulverized coal supply device further comprises: and the material level detection device is arranged on the outer wall of the powder bin body.
Optionally, the one-to-two pulverized coal supply device further comprises: and the bin top explosion-proof door is arranged on the top of the powder bin body.
The utility model discloses a one drags two buggy supply and stores device realizes leading to different supply passage of powder through the screw conveyer that has the function of just reversing to realize supplying two boiler operation simultaneously. In addition, the outer walls of the powder bin body and the bin are provided with the injection fluidizing devices, so that the phenomena of reduction of powder flow speed, unstable powder feeding, blockage of the powder and flow interruption caused by the increase of acting force among the powder coal due to the reduction of the powder coal along with the height are effectively avoided, and further boiler deflagration is avoided.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic view of a one-to-two pulverized coal supply and storage device according to an embodiment of the present invention.
Detailed Description
Various example embodiments will now be described more fully with reference to the accompanying drawings, in which some example embodiments are shown.
In this specification, terms such as "upper" and "lower" are established based on positional relationships shown in the drawings, and the positional relationships may vary depending on the drawings, and therefore, the terms are not to be construed as absolutely limiting the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
A one-to-two pulverized coal supply and storage apparatus according to an embodiment of the present invention will be described with reference to fig. 1.
Referring to fig. 1, a one-to-two pulverized coal supply and storage apparatus according to an embodiment of the present invention includes: the powder bin comprises a powder bin body 1, a bin top dust collector 2, a powder grinding pipe 3, a spiral conveyor 4 and two supply channels (respectively marked as a first supply channel and a second supply channel).
The bin top dust collector 2 is arranged on the top of the powder bin body 1, and the powder spraying pipe 3 is connected with the top of the powder bin body 1; the bottom of the powder bin body 1 is respectively connected with two supply channels through the screw conveyer 4.
Here, the screw conveyor 4 (i.e., the screw powder conveyor) has a forward and reverse rotation function, and feeds the powder (e.g., pulverized coal) in two directions by forward or reverse rotation, one direction feeding the first supply path and the other direction feeding the second supply path. That is to say, the screw conveyor 4 is used for supplying powder to different supply channels, so that the supply of pulverized coal for two boilers is realized, and the problem that one powder bin can only supply one boiler is solved.
Specifically, each supply channel includes: the device comprises a first manual gate valve, an air lock valve, a storage bin, a second manual gate valve, a rotary feeder, a feeding pipe, a pneumatic gate valve and a Roots blower.
One end of the first manual gate valve is connected with the screw conveyor 4, the other end of the first manual gate valve is connected with one end of the storage bin through the air locking valve, the other end of the storage bin is connected with one end of the rotary feeder through the second manual gate valve, the other end of the rotary feeder is connected with one end of the pneumatic gate valve through the feeding pipe, and the other end of the pneumatic gate valve is connected with the Roots blower.
As an example, in fig. 1, the first supply passage includes: the device comprises a first manual gate valve 5, a first air lock valve 6, a first storage bin 7, a second manual gate valve 8, a first rotary feeder 9, a first feeding pipe 10, a first pneumatic gate valve 11 and a first Roots blower 12. One end of the first manual gate valve 5 is connected with the screw conveyor 4, the other end of the first manual gate valve 5 is connected with one end of the first storage bin 7 through the first air lock valve 6, the other end of the first storage bin 7 is connected with one end of the first rotary feeder 9 through the second manual gate valve 8, the other end of the first rotary feeder 9 is connected with one end of the first pneumatic gate valve 11 through the first feeding pipe 10, and the other end of the first pneumatic gate valve 11 is connected with the first roots fan 12.
The second supply channel includes: a third manual gate valve 13, a second air lock valve 14, a second storage bin 15, a fourth manual gate valve 16, a second rotary feeder 17, a second feeding pipe 18, a second pneumatic gate valve 19 and a second Roots blower 20. One end of the third manual gate valve 13 is connected with the screw conveyor 4, the other end of the third manual gate valve 13 is connected with one end of the second bin 15 through the second airlock valve 14, the other end of the second bin 15 is connected with one end of the second rotary feeder 17 through the fourth manual gate valve 16, the other end of the second rotary feeder 17 is connected with one end of the second pneumatic gate valve 19 through the second feeding pipe 18, and the other end of the second pneumatic gate valve 19 is connected with the second roots blower 20.
Adopt first manual push-pull valve 5 can conveniently overhaul airlock valve 6, adopt third manual push-pull valve 13 can conveniently overhaul airlock valve 14. The first rotary feeder 9 can be conveniently overhauled by adopting a second manual gate valve 8, and the second rotary feeder 17 can be conveniently overhauled by adopting a fourth manual gate valve 16.
Here, the first airlock valve 6 and the second airlock valve 14 are used to lock the air volume, and adjust the air volume to separate the powder from the air.
Here, the first pneumatic gate valve 11 and the second pneumatic gate valve 19 may be rapidly shut off, thereby stopping the powder supply (i.e., supplying the powder).
Here, the first hopper 7 and the second hopper 15 buffer the powder discharge. As an example, the first bin 7 and the second bin 15 are both inverted cone structures, but the present invention is not limited thereto.
Preferably, the powder silo body 1 comprises: a cylindrical bin body and a cone portion. One end of the cylindrical bin body is used as the top of the powder bin body 1, the other end of the cylindrical bin body is connected with one end of the cone body part, and the other end of the cone body part is connected with the screw conveyor 4.
It is understood that one end of the cone portion is a cone bottom surface end, and the other end of the cone portion is an apex end, so that the cone portion is inverted.
It will be appreciated that the connections described above are all pipe/tubing connections.
Preferably, the one-to-two pulverized coal supply device further comprises: the fluidizing device 21 is blown.
The blowing fluidizing device 21 is arranged on the outer wall of the powder bin body 1 and/or the outer wall of the first bin 7 and/or the outer wall of the second bin 15.
As an example, the number of the blowing fluidizing devices 21 is plural. For example, a plurality of blowing fluidizing devices 21 are uniformly distributed on the outer wall of the first bin 7 so as to surround the first bin 7; and/or a plurality of blowing fluidizing devices 21 are uniformly distributed on the outer wall of the second storage bin 15 so as to enclose the second storage bin 15; and/or a plurality of injection fluidizing devices 21 are uniformly distributed on the outer wall of the powder bin body 1 so as to surround the powder bin body 1, so that the phenomena of reduction of powder flow speed, unstable blanking, blockage of coal powder, flow cutoff and the like caused by increase of acting force among the coal powder due to reduction of the coal powder along with height are avoided, and further boiler deflagration is effectively avoided
Preferably, two layers of blowing fluidizing devices 21 are uniformly distributed on the outer wall of the first silo 7 and/or the outer wall of the second silo 15.
Preferably, the one-to-two pulverized coal supply device further comprises: and the temperature detection device (not shown) is arranged on the outer wall of the powder cabin body 1.
As an example, the number of the temperature detection devices is multiple, and the multiple temperature detection devices are uniformly distributed on the outer wall of the powder bin body 1, so as to form multiple temperature measurement points for detecting the powder bin temperature.
For example, the temperature detection device is a temperature sensor.
Preferably, the one-to-two pulverized coal supply device further comprises: and the material level detection device (not shown) is arranged on the outer wall of the powder cabin body 1 and is used for detecting the change of the material level.
As an example, the level detecting device is a rotation-resistance level detecting device.
Preferably, the one-to-two pulverized coal supply device further comprises: the bin top explosion-proof door 22 is arranged on the top of the powder bin body 1.
The working process of the one-driving-two pulverized coal supply and storage device according to the embodiment of the present invention is described in detail as follows:
the dust collector 2 at the top of the silo is started, pulverized coal enters the powder silo body 1 through the powder injection pipe 3, the first manual gate valve 5, the second manual gate valve 8, the third manual gate valve 13 and the fourth manual gate valve 16 are manually opened, and the first pneumatic gate valve 11 and the second pneumatic gate valve 19 are opened to form two channels (namely, the first supply channel is in an operating state, and the second supply channel is in an operating state). Starting the screw conveyor 4, and enabling the powder bin to discharge to a running first supply channel by forward rotation of the screw conveyor 4, namely, enabling the powder to enter a first storage bin 7 through a first opened manual gate valve 5 and a first air locking valve 6; or the powder bin is fed to the running second supply channel by reversing the screw conveyor 4, namely, the powder enters the second bin 15 through the opened third manual gate valve 13 and the second air lock valve 14; the method comprises the steps of starting a first Roots blower 12 and a second Roots blower 20 to supply air, starting a first rotary feeder 9 and a second rotary feeder 17, wherein the first rotary feeder 9 is communicated with an outlet air supply pipeline of the first Roots blower 12 through a first feeding pipe 10, the second rotary feeder 17 is communicated with an outlet air supply pipeline of the second Roots blower 20 through a second feeding pipe 18, and powder falls down and is directly blown into a hearth (namely a boiler combustion chamber) to be fully combusted.
When powder feeding is abnormal (for example, the powder feeding is blocked or the powder is wet due to the increase of the acting force between the coal powder caused by the reduction of the coal powder along with the height), an air source is generated by starting the injection fluidizing device 21 by using an air compressor, compressed air is connected with injection pipes which are circumferentially distributed on a powder bin cone through main pipeline branches, and the compressed air enters the inside of the cone part to flow aid and accelerate the powder feeding.
The start/start-up process described above may be controlled by a controller (not shown), as an example.
In addition, the powder bin body 1 is in a negative pressure state under normal conditions, and in this case, the bin top explosion door 22 is in a closed state; when the powder cabin body 1 generates positive pressure in the powder grinding process, the cabin top explosion door 22 is opened to release pressure.
To sum up, the utility model discloses a one drags two buggy supply and storage device realizes leading to different supply passage of powder through the screw conveyer that has the function of just reversing to realize supplying two boiler operations simultaneously. In addition, the outer walls of the powder bin body and the bin are provided with the injection fluidizing devices, so that the phenomena of reduction of powder flow speed, unstable powder feeding, blockage of the powder and flow interruption caused by the increase of acting force among the powder coal due to the reduction of the powder coal along with the height are effectively avoided, and further boiler deflagration is avoided.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A one-to-two pulverized coal supply and storage device, comprising: the powder bin comprises a powder bin body, a bin top dust collector, a powder spraying pipe, a spiral conveyor and two supply channels; the powder bin body includes: a cylindrical bin body and a cone body part;
one end of the cylindrical bin body is used as the top of the powder bin body, the bin top dust collector is arranged on the top of the powder bin body, and the powder spraying pipe is connected with the top of the powder bin body; the other end of the cylindrical bin body is connected with one end of the cone body part, and the other end of the cone body part is used as the bottom of the powder bin body and is connected with the spiral conveyer, so that the bottom of the powder bin body is respectively connected with two supply channels through the spiral conveyer;
wherein each supply channel comprises: the device comprises a first manual gate valve, an air lock valve, a storage bin, a second manual gate valve, a rotary blanking device, a blanking pipe, a pneumatic gate valve and a Roots blower;
one end of the first manual gate valve is connected with the screw conveyor, the other end of the first manual gate valve is connected with one end of the storage bin through the air locking valve, the other end of the storage bin is connected with one end of the rotary feeder through the second manual gate valve, the other end of the rotary feeder is connected with one end of the pneumatic gate valve through the feeding pipe, and the other end of the pneumatic gate valve is connected with the Roots blower.
2. The one-driven-two pulverized coal supply device according to claim 1, further comprising: a blowing fluidizing device;
the blowing fluidization device is arranged on the outer wall of the powder bin body and/or the outer wall of the bin.
3. The one-driven-two pulverized coal supply device according to claim 1, further comprising: and the temperature detection device is arranged on the outer wall of the powder bin body.
4. The one-driven-two pulverized coal supply and storage device as claimed in claim 3, wherein the number of the temperature detection devices is plural, and the plural temperature detection devices are uniformly distributed on the outer wall of the powder bin body.
5. The one-driven-two pulverized coal supply device according to claim 1, further comprising: and the material level detection device is arranged on the outer wall of the powder bin body.
6. A device for supplying and storing pulverized coal for one driven two as claimed in any one of claims 1 to 5, further comprising: and the bin top explosion-proof door is arranged on the top of the powder bin body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921079830.2U CN210861172U (en) | 2019-07-11 | 2019-07-11 | One-to-two pulverized coal supply and storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921079830.2U CN210861172U (en) | 2019-07-11 | 2019-07-11 | One-to-two pulverized coal supply and storage device |
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| Publication Number | Publication Date |
|---|---|
| CN210861172U true CN210861172U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921079830.2U Active CN210861172U (en) | 2019-07-11 | 2019-07-11 | One-to-two pulverized coal supply and storage device |
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| Country | Link |
|---|---|
| CN (1) | CN210861172U (en) |
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- 2019-07-11 CN CN201921079830.2U patent/CN210861172U/en active Active
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