CN213976087U - Boosting type energy-saving anti-blocking pneumatic conveying device - Google Patents
Boosting type energy-saving anti-blocking pneumatic conveying device Download PDFInfo
- Publication number
- CN213976087U CN213976087U CN202022675704.2U CN202022675704U CN213976087U CN 213976087 U CN213976087 U CN 213976087U CN 202022675704 U CN202022675704 U CN 202022675704U CN 213976087 U CN213976087 U CN 213976087U
- Authority
- CN
- China
- Prior art keywords
- valve
- air
- pipeline
- ash
- bin
- Prior art date
- 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.)
- Active
Links
Images
Abstract
The utility model belongs to a pneumatic conveyor technical field, specifically speaking relates to a stifled pneumatic conveyor is prevented in energy-conservation of boosting formula, include: the device comprises a gas storage tank (1), a bin type pump (2), an economizer ash hopper (3) and a plurality of boosting type self-induction electromagnetic valves (12); the gas storage tank (1) is connected with one side of the bin pump (2) through a connecting pipeline; an economizer ash falling hopper (3) is arranged above the bin pump (2), and a feed valve (4) and a high-pressure air valve (6) are arranged on the connecting pipeline; an ash conveying pipeline (15) is arranged on the other side of the bin type pump, an air valve (8) and a discharge valve (9) are arranged on the other side close to the bin type pump, boosting type self-induction electromagnetic valves (12) are arranged every 3-5m behind the air valve, and the outlet end of the ash conveying pipeline (15) is connected to an ash storehouse (16); an exhaust valve (7) is arranged at the bottom of the bin pump (2), and the bin pump (2) is connected with the air storage tank (1) in a closed loop mode through a connecting pipeline; the air storage tank (1) is provided with an air supply pipeline (10).
Description
Technical Field
The utility model belongs to the technical field of pneumatic conveyor, specifically speaking relates to a stifled pneumatic conveyor is prevented in boosting formula energy-conservation.
Background
Pneumatic conveying, also known as air flow conveying, utilizes the energy of air flow to convey granular materials in an air flow direction in a closed pipeline, and is a specific application of fluidization technology. The pneumatic conveying system has simple structure and convenient operation, can be used for horizontal, vertical or inclined conveying, and can simultaneously carry out physical operations or certain chemical operations such as heating, cooling, drying, airflow classification and the like on materials in the conveying process. Therefore, the pneumatic ash conveying system of the existing thermal power plant usually adopts a bin type pump for pneumatic conveying.
The bin pump is a reliable dense phase pneumatic conveying device for conveying powdery material under high pressure (about 700kPa or less). The bin pump has two discharging modes, wherein the bottom discharging mode is the most common mode, and materials in the tank are fluidized by air inflation of a conical surface inflation groove, air injection of a nozzle or other methods; the fluidized aeration plate (layer) is arranged at the bottom of the tank, so that the materials can be discharged from the upper part of the tank. The distribution of the conveying gas in the tank at different inlet levels depends on the nature of the material to be conveyed.
The bin pump delivery is a discontinuous delivery process. Before the bin pump feeds, the material to be conveyed is filled in the bin, and all valves are closed. The whole working process is as follows:
(1) opening a feeding valve and an exhaust valve, feeding by a bin type pump under normal pressure until a bin full indicating signal is sent by a horizontal level meter;
(2) closing the feed valve and the exhaust valve, and then opening the high-pressure air valve to pressurize the tank;
(3) when the operating pressure is reached, opening a conveying air valve and a discharge valve, and conveying the materials;
(4) the end of delivery is indicated by a pressure switch, level gauge or time relay. At the moment, the high-pressure air valve and the discharge valve are closed, so that all the compressed air is used for blowing the conveying pipeline; and simultaneously, opening an exhaust valve to reduce the pressure in the tank to a normal pressure state. However, the bin pump pneumatic conveying system has the following problems:
(1) the air source pressure is low, the air quantity is insufficient, the ash-air ratio is increased, the conveying concentration is overlarge, the pipeline resistance is increased, and pipe blockage is easy to occur.
(2) The air source carries oil and water to cause pipe blockage: the main reason for the air source carrying oil is that the filter screen of the oil-gas separator of the air compressor leaks or is blocked, so that a large amount of air source carrying oil is caused. The air source carries water, the desiccant A/B tower is not switched, and the desiccant is not replaced according to time, so that the water content in the air is increased, and the air source carries oil and water to block ash cakes.
(3) Settling ash: the settled ash refers to ash falling to an ash bucket when the flue gas passes through the electric dust removal without operation and part of gravity is greater than the buoyancy of the flue gas. And (3) ash settled by kerosene co-combustion in the ignition stage of the boiler and ash settled after the electric dust removal is stopped due to faults. The settling ash generally has large and thick particles and a rough surface, so that the probability of conveying accidents is higher, the ash particles gradually settle in the conveying process, pipe blockage is easy to occur,
(4) influence of the Ash Source: plasma ignition is adopted for ignition of the boiler, the fuel burnout degree is poor, and the carbon content in the fly ash combustible reaches 30%. A large amount of unburned coal powder enters the electric dust collector and falls into the ash hopper.
(5) Failure of the air supply system:
(5-1) the air supply one-way valve is damaged, ash gas in the pipeline is blown back to the air supply pipe, the air supply pipeline is blocked, the ash gas is not mixed after air supply is lost, and the ash conveying pipeline is easily blocked when the ash amount is large.
(5-2) failure of the gulp valve: the ash-gas ratio is large after no air supplement, so that the ash and gas cannot be well mixed, and the ash conveying pipe is blocked.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned defect that prior art exists, the utility model provides a stifled pneumatic conveyor is prevented in boosting formula energy-conservation, the device includes: the device comprises an air storage tank, a bin type pump, an economizer ash hopper and a plurality of boosting type self-induction electromagnetic valves;
the air storage tank is connected with one side of the bin pump through a connecting pipeline, and an air inlet valve is arranged between the air storage tank and the bin pump; an economizer ash falling hopper is arranged above the bin type pump, the economizer ash falling hopper and the economizer ash falling hopper are connected through a connecting pipeline, and a feeding valve and a high-pressure air valve are arranged on the connecting pipeline; an ash conveying pipeline is arranged on the other side of the bin type pump, an air valve and a discharge valve are arranged on the other side close to the bin type pump, boosting type self-induction electromagnetic valves are arranged every 3-5m behind the bin type pump, the ash conveying pipeline is divided into a plurality of sections, and the outlet end of the ash conveying pipeline is connected to an ash storehouse;
the bottom of the bin pump is provided with an exhaust valve, and the bin pump is connected with the gas storage tank in a closed loop mode through a connecting pipeline;
the air storage tank is provided with an air supply pipeline, one end close to the air supply pipeline is provided with a manual solenoid valve, the air supply pipeline is provided with a plurality of air mixing pipelines, and each air mixing pipeline is communicated with each boosting type self-induction solenoid valve.
As one improvement of the technical scheme, a PLC (programmable logic controller) is arranged on the gas mixing pipeline and is used for controlling the on-off of the corresponding boosting type self-induction electromagnetic valve.
As an improvement of the above technical solution, the boost type self-induction solenoid valve is a pilot type automatic bolt forming valve.
As one improvement of the technical scheme, the air storage tank is connected with an external compressed air source through a connecting pipeline to provide an air source; an electromagnetic valve is arranged between the air storage tank and an external compressed air source.
Compared with the prior art, the utility model beneficial effect be:
1. an auxiliary conveying mode is adopted, so that stable pressure conveying of the system is ensured, and no blockage exists;
2. the utilization hours of the equipment are increased, the abrasion is reduced, the reliability of the pneumatic conveying device is improved, the maintenance cost is reduced, the equipment failure rate is reduced by 50 percent, and the failure rate is reduced;
3. the system can save gas and electricity by more than 35%, and reduce energy consumption;
4. by adopting an auxiliary ash conveying mode, the ash conveying pipeline is divided into a plurality of sections, and whether each section of ash conveying pipeline is blocked or not is accurately realized, so that long-distance conveying can be realized without ash blockage;
5. can convey conventional materials with large specific gravity or large particles;
6. the boosting type detection anti-blocking measure adopts a boosting type self-induction electromagnetic valve, combines a self-induction mechanism and an electromagnetic valve action mechanism, ensures stable pressure conveying in the ash conveying pipeline, has no blocking forever, and can convey large-specific-gravity and large-particle materials.
7. The boosting self-induction electromagnetic valve is adopted to realize ash conveying assistance, the mechanical design is adopted, the service life reaches 8-10 years, the system maintenance is not needed, and the service life is prolonged.
Drawings
FIG. 1 is a schematic structural view of a boosting type energy-saving anti-blocking pneumatic conveying device of the present invention;
reference numerals:
1. gas storage tank 2, bin type pump
3. Coal economizer ash falling bucket 4 and feed valve
5. Air inlet valve 6 and high-pressure air valve
7. Exhaust valve 8, air valve
9. Discharge valve 10, air supply pipeline
11. Gas mixing pipeline 12 and boosting type self-induction electromagnetic valve
13. Solenoid valve 14, manual solenoid valve
15. Ash conveying pipeline 16 and ash storehouse
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a stifled pneumatic conveyor is prevented in energy-conservation of boosting formula, the device includes: the device comprises a gas storage tank 1, a bin type pump 2, an economizer ash hopper 3 and a plurality of boosting type self-induction electromagnetic valves 12;
the air storage tank 1 is connected with one side of the bin pump 2 through a connecting pipeline, and an air inlet valve 5 is arranged between the air storage tank 1 and the bin pump; an economizer ash falling hopper 3 is arranged above the bin pump 2, the economizer ash falling hopper and the economizer ash falling hopper are connected through a connecting pipeline, and a feeding valve 4 and a high-pressure air valve 6 are arranged on the connecting pipeline; an ash conveying pipeline 15 is arranged on the other side of the bin type pump, an air valve 8 and a discharge valve 9 are arranged on the other side close to the bin type pump, boosting type self-induction electromagnetic valves 12 are arranged every 3-5m behind the ash conveying pipeline, the ash conveying pipeline 15 is divided into a plurality of sections, therefore, whether each section of ash conveying pipeline is blocked or not is accurate, the existing blockage cleaning device can be adopted to clean the section of ash conveying pipeline, therefore, smooth ash conveying of the whole ash conveying pipeline 15 is ensured, and the outlet end of the ash conveying pipeline 15 is connected to an ash warehouse 16;
the bottom of the bin pump 2 is provided with an exhaust valve 7, and the bin pump 2 is connected with the gas storage tank 1 in a closed loop mode through a connecting pipeline;
the gas storage tank 1 is provided with a gas supplementing pipeline 10 for supplying gas to the corresponding boosting type self-induction electromagnetic valve 12 by using a gas source of the gas storage tank 1, one end close to the gas supplementing pipeline 10 is provided with a manual electromagnetic valve 14, the gas supplementing pipeline 10 is provided with a plurality of gas mixing pipelines 11, and each gas mixing pipeline 11 is communicated with each boosting type self-induction electromagnetic valve 12.
And a PLC (programmable logic controller) is arranged on the gas mixing pipeline 11 and is used for controlling the on-off of the corresponding boosting type self-induction electromagnetic valve 12.
The boosting type self-induction electromagnetic valve 12 is a pilot type automatic bolt forming valve; the pilot-operated automatic bolt forming valve is a known existing valve in the field, adopts an auxiliary ash conveying mode, combines a self-induction mechanism and an electromagnetic valve action mechanism, ensures stable pressure conveying in an ash conveying pipeline, is never blocked, and can convey large-specific-gravity and large-particle materials.
The boost type self-induction electromagnetic valve 12 is provided with a pressure sensor for detecting the pressure in the ash conveying pipeline 15 in real time, and the PLC controller controls the on-off of the boost type self-induction electromagnetic valve 12 according to the pressure value measured in real time.
The air storage tank 1 is connected with an external compressed air source through a connecting pipeline to provide an air source; an electromagnetic valve 13 is arranged between the air storage tank 1 and an external compressed air source.
The conveying process of the bin pump is as follows:
opening a feed valve 4 and an exhaust valve 7, feeding by the bin pump 2 under normal pressure until a horizontal level gauge arranged in the bin pump 2 sends a bin full indicating signal;
closing the feed valve 4 and the exhaust valve 7, and then opening the high-pressure air valve 6 to pressurize the tank;
when the operation pressure is reached, opening a conveying air valve 8 and a discharge valve 9, and conveying the materials;
the time and the end process of the delivery are displayed by a pressure switch, a horizontal level gauge and a time relay. At the moment, the high-pressure air valve 6 and the discharge valve 9 are closed, so that all the compressed air is used for blowing the conveying pipeline; simultaneously, opening an exhaust valve 7 to reduce the pressure in the bin pump to a normal pressure state; the PLC arranged on the gas mixing pipeline 11 judges whether the ash conveying pipeline in the section is blocked or not according to the pressure value in the ash conveying pipeline collected by the pressure detector arranged on the boosting type self-induction electromagnetic valve 12 in real time;
if the pressure value in the ash conveying pipeline collected by the pressure detector arranged on the boosting type self-induction electromagnetic valve 12 in real time is smaller than or equal to the preset pressure threshold value, the ash conveying pipeline in the section is not blocked, the PLC controller controls the boosting type self-induction electromagnetic valve 12 to be in an open state, the electromagnetic valve 13 is in an open state, compressed air in the air supply pipeline 10 is blown into the ash conveying pipeline 15 in a boosting auxiliary mode, and ash in the ash conveying pipeline 15 is blown to the ash silo 16 so as to blow the ash conveying pipeline 15 clear;
if the pressure value in the ash conveying pipeline collected in real time by the boosting type self-induction electromagnetic valve 12 is larger than the preset pressure threshold value, the PLC controls the boosting type self-induction electromagnetic valve 12 to be closed, the electromagnetic valve 13 is in a closed state, the existing blockage cleaning device is utilized to clean, the ash conveying pipeline at the section is cleaned up, the PLC controls the boosting type self-induction electromagnetic valve 12 to be opened, the electromagnetic valve 13 is in an open state, the pressure value in the ash conveying pipeline at the section is continuously collected, and whether blockage occurs is further judged. And after the work period is finished, the next work period is continuously circulated.
The device of the utility model can overcome the problems that the prior pneumatic conveying device is easy to cause pipe blockage, reduces output force, causes the tripping of electrostatic precipitation dust deposition and seriously affects the operation safety of the unit, can realize remote conveying and can stably operate; the device is not limited by conditions, and the front end and the rear end of the elbow of the ash conveying pipeline are provided with the boosting type self-induction electromagnetic valves, so that smooth conveying can be realized; energy conservation and consumption reduction, and ash conveying is carried out according to the field requirement; the utilization hours of the equipment are increased, the abrasion is reduced, the reliability of the equipment is improved, and the maintenance cost is reduced. The device can effectively realize non-blocking conveying; the auxiliary conveying is adopted, so that the stable pressure conveying is ensured; the boosting mode is adopted to detect the pressure in the ash conveying pipeline, and the anti-blocking valve is automatically opened according to the change of the pressure value, so that the whole ash conveying pipeline is ensured to be never blocked.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will understand that modifications and equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of them shall fall within the scope of the claims of the present invention.
Claims (4)
1. The utility model provides a stifled pneumatic conveyor is prevented in energy-conservation of boosting formula which characterized in that, the device includes: the device comprises a gas storage tank (1), a bin type pump (2), an economizer ash hopper (3) and a plurality of boosting type self-induction electromagnetic valves (12);
the air storage tank (1) is connected with one side of the bin type pump (2) through a connecting pipeline, and an air inlet valve (5) is arranged between the air storage tank and the bin type pump; an economizer ash falling hopper (3) is arranged above the bin pump (2), the economizer ash falling hopper and the economizer ash falling hopper are connected through a connecting pipeline, and a feeding valve (4) and a high-pressure air valve (6) are arranged on the connecting pipeline; an ash conveying pipeline (15) is arranged on the other side of the bin type pump, an air valve (8) and a discharge valve (9) are arranged on the other side close to the bin type pump, boosting type self-induction electromagnetic valves (12) are arranged every 3-5m behind the air valve, the ash conveying pipeline (15) is divided into a plurality of sections, and the outlet end of the ash conveying pipeline (15) is connected to an ash warehouse (16);
an exhaust valve (7) is arranged at the bottom of the bin pump (2), and the bin pump (2) is connected with the air storage tank (1) in a closed loop mode through a connecting pipeline;
an air supply pipeline (10) is arranged on the air storage tank (1), a manual solenoid valve (14) is arranged at one end close to the air supply pipeline (10), a plurality of air mixing pipelines (11) are arranged on the air supply pipeline (10), and each air mixing pipeline (11) is communicated with each boosting type self-induction solenoid valve (12).
2. The boosting type energy-saving anti-blocking pneumatic conveying device as claimed in claim 1, wherein a PLC (programmable logic controller) is arranged on the gas mixing pipeline (11) and is used for controlling the on-off of the corresponding boosting type self-induction electromagnetic valve (12).
3. The booster-type energy-saving anti-blocking pneumatic conveying device as claimed in claim 2, wherein the booster-type self-induction electromagnetic valve (12) is a pilot-operated automatic bolt forming valve.
4. The boosting type energy-saving anti-blocking pneumatic conveying device as claimed in claim 2, wherein the air storage tank (1) is connected with an external compressed air source through a connecting pipeline to provide an air source; an electromagnetic valve (13) is arranged between the air storage tank (1) and an external compressed air source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022675704.2U CN213976087U (en) | 2020-11-18 | 2020-11-18 | Boosting type energy-saving anti-blocking pneumatic conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022675704.2U CN213976087U (en) | 2020-11-18 | 2020-11-18 | Boosting type energy-saving anti-blocking pneumatic conveying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213976087U true CN213976087U (en) | 2021-08-17 |
Family
ID=77264045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022675704.2U Active CN213976087U (en) | 2020-11-18 | 2020-11-18 | Boosting type energy-saving anti-blocking pneumatic conveying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213976087U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114735476A (en) * | 2022-05-07 | 2022-07-12 | 安徽力科矿山机械有限公司 | Constant voltage controller who possesses explosion-proof subassembly |
| CN114803522A (en) * | 2022-02-09 | 2022-07-29 | 华能济宁运河发电有限公司 | Pilot-operated type low-pressure energy-saving embolism conveying system |
-
2020
- 2020-11-18 CN CN202022675704.2U patent/CN213976087U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114803522A (en) * | 2022-02-09 | 2022-07-29 | 华能济宁运河发电有限公司 | Pilot-operated type low-pressure energy-saving embolism conveying system |
| CN114735476A (en) * | 2022-05-07 | 2022-07-12 | 安徽力科矿山机械有限公司 | Constant voltage controller who possesses explosion-proof subassembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213976087U (en) | Boosting type energy-saving anti-blocking pneumatic conveying device | |
| CN203682609U (en) | Pneumatic dust delivery device of boiler electric dust precipitation system | |
| CN203428536U (en) | Coarse-ash pneumatic conveying system for converter gas dry dedusting | |
| CN102145814A (en) | Safe energy-saving pneumatic ash removal system | |
| CN103333983B (en) | Converter primary flue gas dry dedusting and cinder pneumatic transmission system | |
| CN103274217B (en) | The novel defeated coal cone pump of outlet anti-clogging | |
| CN102285535A (en) | Safe energy-saving dynamic pneumatic ash handling system | |
| CN213504855U (en) | Intelligent control type anti-blocking and blockage-removing pneumatic conveying system | |
| CN212504950U (en) | System for gravity dust removal and ash discharge of blast furnace | |
| CN218951072U (en) | Dredging system for preventing blockage at bottom of cone hopper of bypass evaporation tower and unsmooth ash conveying | |
| CN103333984A (en) | Converter primary exhaust gas dry dedusting coarse ash pneumatic conveying system | |
| CN103333986B (en) | Converter coal gas dry dedusting and cinder pneumatic transmission system | |
| CN207226492U (en) | A kind of close mutually defeated grey process system of novel positive pressure | |
| CN103332493A (en) | Pneumatic conveying method for removing dust and crude ash in dry process of converter gas | |
| CN203373375U (en) | Primary smoke dry method dedusting cinder pneumatic transmission system of revolving furnace | |
| CN213835402U (en) | Double-intermediate ash bin ash discharging system for gravity dust removal and ash discharge of blast furnace | |
| CN211496027U (en) | Two-pair two-dense-phase pneumatic conveying system applied to polycrystalline positive electrode material of lithium battery | |
| CN202072297U (en) | Quantitative positive-pressure pneumatic ash-removing system | |
| CN103333985A (en) | Converter gas dry dedusting coarse ash pneumatic conveying system | |
| CN204689138U (en) | Pneumatic transporting ash silo pump | |
| CN103318648B (en) | Converter gas dry-method dedusting cinder pneumatic conveying method | |
| CN112080601A (en) | System and method for gravity dust removal and ash discharge of blast furnace | |
| CN203373374U (en) | Pneumatic conveying system for coarse ash in dry dedusting of primary flue gas of converters | |
| CN206927271U (en) | The Anti-blocking structure of Industrial Boiler electric precipitation pneumatic ash transmitting system | |
| CN207986182U (en) | A kind of pebble coal positive pressure pneumatic conveying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |