CN204150708U - A kind of defeated ash silo pump control system - Google Patents
A kind of defeated ash silo pump control system Download PDFInfo
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- CN204150708U CN204150708U CN201420579825.9U CN201420579825U CN204150708U CN 204150708 U CN204150708 U CN 204150708U CN 201420579825 U CN201420579825 U CN 201420579825U CN 204150708 U CN204150708 U CN 204150708U
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Abstract
The utility model provides a kind of defeated ash silo pump control system, it is characterized in that comprising: controller, inlet valve on-off signal sending module, exhaust valve open OFF signal sending module, inlet open OFF signal sending module, bleeder valve on-off signal sending module, time delay module, and level-sensing device and pump inner gauge; Wherein, controller receives the level signals or pump internal pressure signal that described level-sensing device and pump inner gauge send respectively, and send control signal to charging threshold switch signal transmitting module, exhaust valve open OFF signal sending module or bleeder valve on-off signal sending module, and control signal is sent to inlet open OFF signal sending module by described time delay module by controller.Therefore, when pneumatic door position switch is abnormal, operations staff only needs the actual act situation confirming pneumatic door on the spot, and material storehouse pump can being avoided to fall so does not up blow, thus buildup does not occur.
Description
Technical field
The utility model belongs to the technical field of mass transport, particularly relates to a kind of defeated ash silo pump control system.
Background technology
Current power plant often adopts the defeated ash silo pump of electric precipitation to carry coal ash, and the principle of work of this storehouse pump is under high pressure (about below 700kPa) conveying powder material, is a kind of reliable close phase dynamic pressure Pneumatic conveyer.The discharge way normally bottom discharge of storehouse pump, namely in tank, material is able to fluidization by the inflation of circular conical surface aeration tank, jet or other method; Arranging fluidization gas panel in bottom can make material draw off on the top of tank.
The workflow of common defeated ash silo pump is the process of charging, fluidisation, conveying, purging.Whole flow process is a suitable defeated ash of mode.But contriver finds in real process, due to the variation of coal class, ash is changed many, add that the defeated grey mode of above-mentioned sequence system exists leak, above-mentioned sequence mode walks the on-off signal that sequence executive condition is pneumatic door, because grey lab environment is severe, the frequent malfunction of on-off signal of pneumatic door or tripping, so be easy to buildup in the pump of storehouse, or step sequence can not be carried out due to tripping, thus can not completely ash be transferred out.
Utility model content
In order to solve the technical matters of defeated ash silo pump buildup in prior art, this use utility model provides a kind of defeated ash silo pump control system that can solve buildup problem very well.
The defeated ash silo pump control system of the one that the utility model provides, it is characterized in that comprising: controller, inlet valve on-off signal sending module, exhaust valve open OFF signal sending module, inlet open OFF signal sending module, bleeder valve on-off signal sending module, time delay module, and level-sensing device and pump inner gauge; Wherein, described controller receives the level signals or pump internal pressure signal that described level-sensing device and pump inner gauge send respectively, and send control signal to charging threshold switch signal transmitting module, exhaust valve open OFF signal sending module or bleeder valve on-off signal sending module, and control signal is sent to inlet open OFF signal sending module by described time delay module by described controller.
Preferably, the time of delay time needed for inlet valve closedown of above-mentioned time delay module.
Preferably, between above-mentioned controller and above-mentioned bleeder valve on-off signal sending module, also time delay module is provided with.
By increasing time delay module in defeated ash silo pump control system, can allow after air inlet valve closes completely, just purge, material storehouse pump can being avoided to fall so does not up blow, thus buildup does not occur.
By the optimization of storehouse pump sequence conditional, pneumatic door position switch is replaced with time delay, the switch position is as the supervision judging failsafe valve, like this when pneumatic door position switch is abnormal, operations staff only needs the actual act situation confirming pneumatic door on the spot, but sequence can not stop, defeated ash normally runs.
Accompanying drawing explanation
Fig. 1 a ~ 1d is the working process schematic diagram of a kind of defeated ash silo pump in prior art;
The module map of a kind of defeated ash silo pump control system that Fig. 2 provides for the utility model embodiment one;
The module map of a kind of defeated ash silo pump control system that Fig. 3 provides for the utility model embodiment two.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail, it should be noted that, these specific descriptions just allow those of ordinary skill in the art be more prone to, clearly understand the utility model, but not to limited explanation of the present utility model.
Be illustrated in figure 1 the workflow diagram of defeated ash silo pump, Fig. 1 (a), 1 (b), 1 (c), 1 (d) are respectively the process of charging, fluidisation, conveying, purging.Particularly, during charging, inlet valve 100, blow off valve (not shown) are opened, and all the other valves all cut out, and flying dust enters in the pump of storehouse, and after level-sensing device 101 detects that in the pump of storehouse, material completely, inlet valve 100 closes; During fluidisation, air inlet valve 102 is opened, and pressurized air enters in the pump of storehouse from the vaporizing chamber bottom the pump housing, makes fluidisation through fluid bed, and when pump inner gauge (not shown) detects that storehouse pump internal pressure rises to predetermined value, bleeder valve 103 leaves; During conveying, inlet valve cuts out always, and bleeder valve 103 is opened, and in pump, to be gradually reduced to mass transport complete for material, and pump internal pressure is down to the resistance of ducting; After mass transport completes, start to purge, close air inlet valve, bleeder valve, purge pipeline.The parts related in above-mentioned steps all receive the control of outside PLC.
Embodiment one
As shown in Figure 2, preferably, the defeated ash silo pump control system 1 of the one that the present embodiment provides, it is characterized in that comprising: controller 2, inlet valve on-off signal sending module 3, exhaust valve open OFF signal sending module 4, inlet open OFF signal sending module 5, bleeder valve on-off signal sending module 6, time delay module 7, and level-sensing device 8 and pump inner gauge 9; Wherein, controller is PLC 2, and PLC 2 receives level signals or pump internal pressure signal that level-sensing device 8 and pump inner gauge 9 send respectively, and send control signal to charging threshold switch signal transmitting module 3 or exhaust valve open OFF signal sending module 4 or bleeder valve on-off signal sending module 5, and control signal is sent to inlet open OFF signal sending module 5 by described time delay module 7 by PLC 2.In described defeated ash silo pump purge, can allow after inlet valve cuts out completely, just purge, material storehouse pump can being avoided to fall so does not up blow, thus buildup does not occur.
Preferably, the time of time needed for inlet valve closedown of above-mentioned time delay module 7.The control signal of such valve, can be the same with element on the pump of storehouse (such as air inlet valve 5) existing condition.
Embodiment two
As shown in Figure 3, can also optimize further on the basis of embodiment one, particularly, above-mentioned PLC 2, in control inlet open OFF signal sending module 5 and bleeder valve on-off signal sending module 6 process, also can be respectively arranged with time delay module 7,11.Like this in the pump work process of storehouse, the execution of each step action can be allowed all to be associated with the existing condition of element.Reduce the number of times of operations staff's local operation, thus reduce working strength.
Preferably, before the concrete delay time of each time delay module above-mentioned can also be arranged on the unlatching of each element.The delay time of modules, can be gone on patrol on the spot by operations staff, determines the switching time of various valve, and this defeated ash silo pump control system can be allowed like this to adapt to different coals better.
The preferred defeated ash silo pump control system adopting the present embodiment to provide, can allow when device hardware does not increase, and thoroughly solves the technical matters of storehouse pump buildup at low cost.
Finally it should be noted that, above-mentioned explanation is only most preferred embodiment of the present utility model, not does any pro forma restriction to the utility model.Any those of ordinary skill in the art; do not departing within the scope of technical solutions of the utility model; the way of above-mentioned announcement and technology contents all can be utilized to make many possible variations and simple replacement etc. to technical solutions of the utility model, and these all belong to the scope of technical solutions of the utility model protection.
Claims (3)
1. a defeated ash silo pump control system, it is characterized in that comprising: controller, inlet valve on-off signal sending module, exhaust valve open OFF signal sending module, inlet open OFF signal sending module, bleeder valve on-off signal sending module, time delay module, and level-sensing device and pump inner gauge; Wherein, described controller receives the level signals or pump internal pressure signal that described level-sensing device and pump inner gauge send respectively, and send control signal to charging threshold switch signal transmitting module, exhaust valve open OFF signal sending module or bleeder valve on-off signal sending module, and control signal is sent to inlet open OFF signal sending module by described time delay module by described controller.
2. defeated ash silo pump control system as claimed in claim 1, is characterized in that, the time of delay time needed for inlet valve closedown of described time delay module.
3. defeated ash silo pump control system as claimed in claim 1, is characterized in that, between described controller and described bleeder valve on-off signal sending module, be also provided with time delay module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579825.9U CN204150708U (en) | 2014-10-09 | 2014-10-09 | A kind of defeated ash silo pump control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579825.9U CN204150708U (en) | 2014-10-09 | 2014-10-09 | A kind of defeated ash silo pump control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204150708U true CN204150708U (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420579825.9U Expired - Fee Related CN204150708U (en) | 2014-10-09 | 2014-10-09 | A kind of defeated ash silo pump control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204150708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913326A (en) * | 2015-06-05 | 2015-09-16 | 国家电网公司 | Novel material level alarm and control device and operation method thereof |
-
2014
- 2014-10-09 CN CN201420579825.9U patent/CN204150708U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913326A (en) * | 2015-06-05 | 2015-09-16 | 国家电网公司 | Novel material level alarm and control device and operation method thereof |
| CN104913326B (en) * | 2015-06-05 | 2017-07-21 | 国家电网公司 | A kind of material position alarm and the operating method of control device |
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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 |
Granted publication date: 20150211 Termination date: 20151009 |
|
| EXPY | Termination of patent right or utility model |