CN114476690A - Automatic clear stifled device of defeated grey system of thermal power plant - Google Patents
Automatic clear stifled device of defeated grey system of thermal power plant Download PDFInfo
- Publication number
- CN114476690A CN114476690A CN202111496355.0A CN202111496355A CN114476690A CN 114476690 A CN114476690 A CN 114476690A CN 202111496355 A CN202111496355 A CN 202111496355A CN 114476690 A CN114476690 A CN 114476690A
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- China
- Prior art keywords
- ash
- pipeline
- clear stifled
- blockage
- storage tank
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005243 fluidization Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 abstract description 10
- 239000002956 ash Substances 0.000 description 66
- 238000000034 method Methods 0.000 description 12
- 230000000903 blocking effect Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 239000010883 coal ash Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/52—Adaptations of pipes or tubes
- B65G53/521—Adaptations of pipes or tubes means for preventing the accumulation or for removal of deposits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/36—Arrangements of containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/52—Adaptations of pipes or tubes
- B65G53/526—Adaptations of pipes or tubes with means for special treatment to facilitate transport
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention discloses an automatic blockage clearing device of an ash conveying system of a thermal power plant, which comprises a blockage clearing and ash storing tank and an ash conveying pipeline, wherein a plurality of pressure sensors with the same structure are arranged on the ash conveying pipeline, a first pipeline is fixedly arranged at the upper end of the side wall of the blockage clearing and ash storing tank, an emptying pneumatic valve is arranged on the first pipeline, a blockage clearing bypass pipeline is fixedly arranged at the lower end of the other side wall of the blockage clearing and ash storing tank, the upper end of the blockage clearing bypass pipeline is connected with the ash conveying pipeline, a manual valve and a pneumatic valve are arranged on the blockage clearing bypass pipeline, an ash discharging pipeline is fixedly arranged at the lower end of the blockage clearing and ash storing tank, and the upper end of the ash discharging pipeline is connected with the other end of the ash conveying pipeline. Brings convenience to people.
Description
Technical Field
The invention relates to the technical field of clearing of ash blockage faults of an ash conveying system of a thermal power plant, in particular to a complete set of equipment for automatically and accurately judging ash blockage positions and automatically clearing ash blockage faults without manual participation, and particularly relates to an automatic clearing device of the ash conveying system of the thermal power plant.
Background
The positive pressure pneumatic ash conveying is a technical scheme commonly adopted by an ash conveying system of a thermal power plant in China at present. The operation is always stable and reliable. However, the ash blocking fault of the ash conveying pipeline often occurs due to the influence of objective factors such as the pressure change of the conveying gas, the unreasonable ash-gas ratio, the foreign matters in the ash conveying pipeline and the like. If the ash blockage is serious, the ash conveying can only be stopped, and the ash blockage positions are checked one by one along the way by manually knocking the ash removal pipeline. And after finding the ash blocking position, manually opening the pipeline for cleaning. Not only increases the labor intensity of workers, but also seriously affects the safe operation of the unit because the ash blocking fault can not be eliminated in time, and simultaneously causes the pollution of the surrounding environment.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an automatic blockage clearing device for an ash conveying system of a thermal power plant, and solves the problem that the existing device is inconvenient to use.
In order to achieve the purpose, the invention is realized by the following technical scheme: the automatic blockage clearing device for the ash conveying system of the thermal power plant comprises a blockage clearing and ash storing tank and an ash conveying pipeline, wherein a plurality of pressure sensors with the same structure are arranged on the ash conveying pipeline, a first pipeline is fixedly arranged at the upper end of the side wall of the blockage removing ash storage tank, an emptying pneumatic valve is arranged on the first pipeline, a blockage removing bypass pipeline is fixedly arranged at the lower end of the other side wall of the blockage removing ash storage tank, the upper end of the blockage removing bypass pipeline is connected with the ash conveying pipeline, a manual valve and a pneumatic valve are arranged on the blockage removing bypass pipeline, an ash discharging pipeline is fixedly arranged at the lower end of the blockage removing ash storage tank, the upper end of the ash discharge pipeline is connected with the other end of the ash conveying pipeline, a second manual valve and a second pneumatic valve are arranged on the ash discharge pipeline, the upper side and the lower side of the blockage removing ash storage tank are respectively and fixedly connected with a compressed air pipeline, and a pair of compressed air pipelines are respectively provided with a fluidization control valve and a main valve.
Preferably, a control system is arranged outside the blockage removing and ash storing tank, and the control system comprises a control box.
Preferably, one compressed air pipeline of the pair of compressed air pipelines is connected with the other compressed air pipeline at the upper end.
Advantageous effects
The invention provides an automatic block clearing device for an ash conveying system of a thermal power plant, which has the following beneficial effects that the manual clearing of the ash blockage of a pipeline is dirty, tired and pollutes the environment, particularly in the northern winter, workers are even impatient in the block clearing process, and the safe operation of a unit is often threatened due to the untimely block clearing. When the ash conveying pipeline has ash blocking fault, the pressure before the ash blocking position is high, the pressure after the ash blocking position is low, and the data of the pressure sensor is accessed into the control system. The control system accurately judges the ash blocking position according to the difference of the pressure data before and after the ash blocking position, and brings convenience to people.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a pressure sensor; 2. an ash conveying pipeline; 3. a control system; 4. clearing the ash storage tank; 5. clearing and blocking a bypass pipeline; 6. a manual valve; 7. a pneumatic valve; 8. emptying a pneumatic valve; 9. an ash discharge pipeline; 10. a second manual valve; 11. a second pneumatic valve; 12. a compressed air line; 13. a main valve; 14. a fluidization control valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
Referring to fig. 1, the present invention provides a technical solution: the automatic blockage clearing device for the ash conveying system of the thermal power plant comprises a blockage clearing ash storage tank 4 and an ash conveying pipeline 2, wherein a plurality of pressure sensors 1 with the same structure are arranged on the ash conveying pipeline 2, a first pipeline is fixedly arranged at the upper end of the side wall of the blockage clearing ash storage tank 4, an emptying pneumatic valve 8 is arranged on the first pipeline, a blockage clearing bypass pipeline 5 is fixedly arranged at the lower end of the other side wall of the blockage clearing ash storage tank 4, the upper end of the blockage clearing bypass pipeline 5 is connected with the ash conveying pipeline 2, a manual valve 6 and a pneumatic valve 7 are arranged on the blockage clearing bypass pipeline 5, an ash discharging pipeline 9 is fixedly arranged at the lower end of the blockage clearing ash storage tank 4, the upper end of the ash discharging pipeline 9 is connected with the other end of the ash conveying pipeline 2, a second manual valve 10 and a second pneumatic valve 11 are arranged on the ash discharging pipeline 9, compressed air pipelines 12 are respectively and fixedly connected to the upper side and the lower side of the blockage clearing ash storage tank 4, a fluidization control valve 14 and a main valve 13 are respectively arranged on the pair of compressed air pipelines 12, a control system 3 is arranged outside the blockage cleaning ash storage tank 4, the control system 3 comprises a control box, and the upper end of one compressed air pipeline 12 of the pair of compressed air pipelines 12 is connected with the other compressed air pipeline 12.
The following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes thereof are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in the present disclosure.
Example (b): and the manual valve 6, the second manual valve 10 and the main valve 13 are normally opened when in normal operation. When two adjacent pressure sensor 1 pressure differential values reach stifled grey upper limit value, control system 3 sends stifled grey alarm signal, starts the clear stifled device of automation between two pressure sensor 1 simultaneously, clear stifled process: firstly, opening the emptying pneumatic valve 8, then opening the pneumatic valve 7 on the blockage removing bypass pipeline 5, discharging coal ash in the ash conveying pipeline 2 into the blockage removing ash storage tank 4 under the pushing of compressed air in the ash conveying pipeline 2, separating the air through a dust removing cloth bag in the tank, discharging the air through the emptying pneumatic valve 8, leaving the coal ash in the blockage removing ash storage tank 4, and shaking and beating the coal ash through compressed air controlled by a pulse controller, wherein the coal ash falls into the bottom of the blockage removing ash storage tank 4. When the pressure 1 values of two adjacent pressure sensors are close and are both lower than the ash blockage lower limit value, the automatic blockage clearing process is finished, the pneumatic valve 7 on the blockage clearing bypass pipeline 5 is closed firstly, and then the emptying pneumatic valve 8 is closed.
Ash discharge process: and after the blockage removing process is finished, the fluidization control valve 14 is opened when ash conveying enters normal operation, the ash discharging second pneumatic valve 11 is opened after 3 seconds, the ash discharging second pneumatic valve 11 is closed after 50 seconds of delay (the time can be set on a touch screen), and the fluidization control valve 14 is closed. And at this point, the whole automatic blockage clearing operation is finished, and the control box is made of 304 stainless steel and is outdoor rainproof. The interior is equipped with PLC controller, touch-sensitive screen, low-voltage apparatus etc.. The control program is downloaded in the PLC and the touch screen, and the use is convenient.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. Automatic clear stifled device of ash conveying system of thermal power plant, including clear stifled ash storage tank (4) and ash conveying pipeline (2), its characterized in that, be equipped with a plurality of pressure sensor (1) that the structure is the same on ash conveying pipeline (2), clear stifled ash storage tank (4) lateral wall upper end fixed mounting has first pipeline, be equipped with unloading pneumatic valve (8) on the first pipeline, clear stifled ash storage tank (4) other lateral wall lower extreme fixed mounting has clear stifled bypass pipeline (5), clear stifled bypass pipeline (5) upper end with ash conveying pipeline (2) are connected, be equipped with manual valve (6) and pneumatic valve (7) on clear stifled bypass pipeline (5), clear stifled ash storage tank (4) lower extreme fixed mounting has ash discharge pipeline (9), ash discharge pipeline (9) upper end with the other end of ash conveying pipeline (2) is connected, be equipped with second manual valve (10) and second pneumatic valve (11) on ash discharge pipeline (9), the upper side and the lower side of the blockage removing ash storage tank (4) are respectively and fixedly connected with a compressed air pipeline (12), and a fluidization control valve (14) and a main valve (13) are respectively arranged on the pair of compressed air pipelines (12).
2. The automatic blockage clearing device for the ash conveying system of the thermal power plant as claimed in claim 1, wherein a control system (3) is arranged outside the blockage clearing and ash storing tank (4), and the control system (3) comprises a control box.
3. The automatic block clearing device for the ash conveying system of the thermal power plant as claimed in claim 1, characterized in that the upper end of one compressed air pipeline (12) of a pair of the compressed air pipelines (12) is connected with the other compressed air pipeline (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111496355.0A CN114476690A (en) | 2021-12-09 | 2021-12-09 | Automatic clear stifled device of defeated grey system of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111496355.0A CN114476690A (en) | 2021-12-09 | 2021-12-09 | Automatic clear stifled device of defeated grey system of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114476690A true CN114476690A (en) | 2022-05-13 |
Family
ID=81492891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111496355.0A Pending CN114476690A (en) | 2021-12-09 | 2021-12-09 | Automatic clear stifled device of defeated grey system of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114476690A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865102A (en) * | 2005-05-18 | 2006-11-22 | 贵阳铝镁设计研究院 | Automatic dredging method and device for pneumatic convey system |
| CN102009850A (en) * | 2009-09-08 | 2011-04-13 | 镇江市电站辅机厂 | Conveying device in positive and negative integrated multifunctional pump system |
| CN103274217A (en) * | 2013-06-20 | 2013-09-04 | 中天钢铁集团有限公司 | Novel coal conveying bunker type pump with blockage-preventing outlet |
| CN204490020U (en) * | 2014-12-30 | 2015-07-22 | 内蒙古大唐国际托克托发电有限责任公司 | Ash-transmission system blocks up grey checkout facility |
| CN204962158U (en) * | 2015-09-02 | 2016-01-13 | 云南锡业股份有限公司铜业分公司 | Fine coal pipeline filters and automatic clear stifled device |
| CN207061321U (en) * | 2017-06-23 | 2018-03-02 | 四川普什醋酸纤维素有限责任公司 | Geldart-D particle plug-back device |
| CN210528959U (en) * | 2019-05-10 | 2020-05-15 | 江阴兴澄特种钢铁有限公司 | Blockage clearing pulverized coal recovery device for blast furnace coal injection gun |
-
2021
- 2021-12-09 CN CN202111496355.0A patent/CN114476690A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865102A (en) * | 2005-05-18 | 2006-11-22 | 贵阳铝镁设计研究院 | Automatic dredging method and device for pneumatic convey system |
| CN102009850A (en) * | 2009-09-08 | 2011-04-13 | 镇江市电站辅机厂 | Conveying device in positive and negative integrated multifunctional pump system |
| CN103274217A (en) * | 2013-06-20 | 2013-09-04 | 中天钢铁集团有限公司 | Novel coal conveying bunker type pump with blockage-preventing outlet |
| CN204490020U (en) * | 2014-12-30 | 2015-07-22 | 内蒙古大唐国际托克托发电有限责任公司 | Ash-transmission system blocks up grey checkout facility |
| CN204962158U (en) * | 2015-09-02 | 2016-01-13 | 云南锡业股份有限公司铜业分公司 | Fine coal pipeline filters and automatic clear stifled device |
| CN207061321U (en) * | 2017-06-23 | 2018-03-02 | 四川普什醋酸纤维素有限责任公司 | Geldart-D particle plug-back device |
| CN210528959U (en) * | 2019-05-10 | 2020-05-15 | 江阴兴澄特种钢铁有限公司 | Blockage clearing pulverized coal recovery device for blast furnace coal injection gun |
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