CN209835029U - Bed material conveying system for supercharging boiler device - Google Patents
Bed material conveying system for supercharging boiler device Download PDFInfo
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- CN209835029U CN209835029U CN201822053164.7U CN201822053164U CN209835029U CN 209835029 U CN209835029 U CN 209835029U CN 201822053164 U CN201822053164 U CN 201822053164U CN 209835029 U CN209835029 U CN 209835029U
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Abstract
The utility model discloses a bed material conveying system for pressurizing a boiler device, which comprises an air compressor, an air dryer, a filter, an air storage tank, a boiler, a slag warehouse, a temporary storage bin, a conveying pipeline and an air pipe; the rear end of the air compressor is connected with an air dryer through a pipeline, the rear end of the air dryer is connected with an air storage tank through a pipeline, the air storage tank is connected with an air conveying main pipe, the air conveying main pipe is provided with a manual check main valve, a material conveying pipe and a pneumatic pipe are arranged behind the air conveying main pipe in parallel, the material conveying pipe is connected to a feed port of the boiler, and the pneumatic pipe is connected to the material conveying pipe; the temporary storage bin is arranged on the conveying pipe, the slag warehouse is connected to a feeding port of the temporary storage bin through a pipeline, a switch is arranged on the pipeline between the slag warehouse and the temporary storage bin, and a discharge valve is arranged at the bottom of the temporary storage bin; when the bed pressure of the boiler continuously drops, bed materials can be supplemented in time, the safe and stable operation of the boiler device is maintained, and in addition, the bed material filling risk of the boiler is reduced, and the consumption of manpower, material resources and cost is reduced.
Description
Technical Field
The utility model relates to a petrochemical industry technical field, concretely relates to boiler plant pressure boost is with bed material conveying system.
Background
The design fuel of the boiler device of the chemical power station is 38.2 percent of petroleum coke and 61.8 percent of low-grade coal (weight ratio), and after trial operation, the working condition of the design fuel reaches the operation requirement. According to the plan arrangement, the blending burning proportion of the petroleum coke is gradually increased to the checking working condition, namely 60 percent of petroleum coke and 40 percent of low-grade coal (weight ratio).
When fuel ash content is low, the bed pressure of a boiler can be reduced continuously, particularly after petroleum coke blending combustion proportion is improved continuously, the bed pressure is easy to reduce continuously due to the fact that petroleum coke ash content is low, at the moment, bed materials are added into a hearth in time to maintain stable bed pressure, if the bed materials cannot be supplemented in time, the concentration of the hearth materials can be reduced continuously, the material return quantity is reduced, the bed temperature is increased, and safe and stable operation of the boiler is endangered.
Conventional power station boiler devices are not provided with a wired bed material adding facility, and at present, when the boiler needs to supplement bed materials in the normal operation process, bed materials prepared in advance can only be added manually.
Before the boiler is overhauled and is reserved, about 40 tons of bed materials need to be filled into a hearth, and the current filling mode is as follows: firstly, manually bagging the bed materials on a 0-meter layer of the boiler, then hoisting the bed materials to an 8-meter layer of the boiler through an electric hoist, and manually feeding the bed materials into a hearth to pour out the bed materials. The operation can be finished by filling the bed materials by 20 persons in 2 days, the time, the labor and the labor cost are not consumed, and the risk of hurting people due to falling objects exists in the process of hoisting.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bed material conveying system for boiler device for when boiler bed pressure lasts the decline, can in time supply the bed material, maintain boiler device safety and stability operation, in addition, be used for reducing the risk that the boiler loaded the bed material, reduce manpower, material resources, expense consumption.
In order to solve the technical problem, the utility model adopts the following technical scheme: a bed material conveying system for pressurizing a boiler device comprises an air compressor, an air dryer, a filter, an air storage tank, a boiler, a slag warehouse, a temporary storage bin, a conveying pipe and an air pipe; the rear end of the air compressor is connected with an air dryer through a pipeline, the rear end of the air dryer is connected with an air storage tank through a pipeline, the air storage tank is connected with an air conveying main pipe, a manual check main valve is arranged on the air conveying main pipe, a material conveying pipe and an air force pipe are arranged behind the air conveying main pipe in parallel, the material conveying pipe is connected to a feed port of the boiler, and the air force pipe is connected to the material conveying pipe; the storage bin sets up on the conveying pipeline, the sediment storehouse is connected to storage bin feed inlet through the pipeline, is provided with the switch on the pipeline between sediment storehouse and the storage bin of keeping in, and storage bin bottom is provided with the baiting valve.
Further, set gradually first manual valve, first pressure relief valve on the conveying pipeline of feed bin front end of keeping in, first pneumatic valve and first check valve, the rear end of feed bin of keeping in is provided with first solenoid valve, and the conveying pipeline setting is in the bottom of feed bin discharge gate of keeping in.
Furthermore, a gas pipe is arranged at one fifth of the temporary storage bin close to the discharge port, a second check valve is arranged on the gas pipe, and the other end of the gas pipe is connected to a material conveying pipe between the first pneumatic valve and the first check valve.
Furthermore, the top of the temporary storage bin is provided with an air pipe, a second manual valve, a second pressure relief valve, a second pneumatic valve and a third check valve are sequentially arranged on the air pipe, and one end of the air pipe is connected to the air pipe.
Furthermore, a material level meter is arranged in the temporary storage bin.
Furthermore, a third manual valve, a third pressure relief valve, a third pneumatic valve and a fourth manual valve are sequentially arranged on the pneumatic pipe.
Furthermore, a fourth electromagnetic valve is arranged on the feed delivery pipe at the front end of the feed inlet of the boiler, the number of the feed inlets of the boiler is 2, the number of the fourth electromagnetic valves is 2, and a fifth electromagnetic valve is arranged at the tail end of the feed delivery pipe.
Furthermore, an air pipe is arranged on a material conveying pipe at the front end of a feed port of the boiler, a fourth check valve is arranged on the air pipe, the other end of the air pipe is connected and arranged on the air pipe, and 3 groups of air pipes with the fourth check valve are arranged and connected to the air pipe in parallel.
Furthermore, a pressure gauge is arranged on the gas transmission main pipe, a pressure gauge is arranged on each branch pipe, and each pressure gauge and each valve are uniformly controlled by a PLC (programmable logic controller) with a touch screen.
Furthermore, an air pipe is arranged on the material conveying pipe behind the first electromagnetic valve and connected to the air pipe at the front end of the third manual valve, a pulse booster is arranged on the air pipe, and an electromagnetic valve is arranged behind the pulse booster.
Compared with the prior art, the beneficial effects of the utility model are that: this system carries the material as power through the pressure that uses malleation compressed air, carries out automatic control through PLC, when having realized that boiler bed pressure lasts to descend, can in time supply bed material, and in addition, the use equipment replaces artifically, has not only reduced the hand labor cost, has also reduced the risk that the boiler loaded bed material, reduces manpower, material resources, expense consumption, can carry out real-time the accuse to whole production process in real time, and stable production improves efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
as shown in the figure, the bed material conveying system for pressurizing the boiler device comprises an air compressor, an air dryer, an air storage tank 11, a boiler 1, a slag warehouse 24, a temporary storage bin 18, a conveying pipe 27 and an air pipe 25; the rear end of the air compressor is provided with an air dryer through pipeline connection, the rear end of the air dryer is provided with an air storage tank 11 through pipeline connection, the air storage tank 11 is provided with an air transmission main pipe 29 in a connection mode, the air transmission main pipe 29 is provided with a manual check main valve 28, a material conveying pipe 27 and a pneumatic pipe 25 are arranged behind the air transmission main pipe 29 in parallel, the material conveying pipe 27 is connected to a feeding port 2 of the boiler 1, and the pneumatic pipe 25 is connected to the material conveying pipe 27; the temporary storage bin 18 is arranged on the conveying pipeline 27, the slag warehouse 24 is connected to a feeding hole of the temporary storage bin 18 through a pipeline, a switch is arranged on the pipeline between the slag warehouse 24 and the temporary storage bin 18, and a discharge valve is arranged at the bottom of the temporary storage bin 18.
This system provides aerodynamic force through the air compressor machine, carries the material in intraductal real time, because the material moisture can the caking all expect, sets up air dryer behind the process of carrying out air compression and gets rid of the moisture in the humid air, in addition, sets up the route of carrying into 2 ways, does main material transport all the way, does the strength all the way and assists and bump material power.
Example 2:
on the basis of the above embodiment, in this embodiment, for better regulation and control of the system, the first manual valve 12, the first pressure relief valve 16, the first pneumatic valve 13 and the first check valve 14 are sequentially arranged on the delivery pipe 27 at the front end of the temporary storage bin 18, the first electromagnetic valve 15 is arranged at the rear end of the temporary storage bin 18, and the delivery pipe 27 is arranged at the bottom of the discharge port of the temporary storage bin 18. The first manual valve 12 is provided to manually cut off the system in case of a failure or other conditions, the first pressure relief valve 16 is used to ensure the stability of pressure in the whole conveying process, the first pneumatic valve 13 is used for main switching control, and the first check valve 14 is used to prevent the material from backflushing when the pressure of the flying material is abnormal.
Example 3:
on the basis of the above embodiment, in this embodiment, in order to better help the blanking, an air pipe is arranged at one fifth of the temporary storage bin 18 close to the discharge port, a second check valve 17 is arranged on the air pipe, and the other end of the air pipe is connected to the conveying pipe between the first pneumatic valve 13 and the first check valve 14. Through set up the trachea at one fifth department and add the power supply, can follow good supplementary unloading.
Example 4:
on the basis of the above embodiment, in this embodiment, in order to better assist the blanking, an air pipe is arranged on the top of the temporary storage bin 18, and a second manual valve 20, a second pressure relief valve 21, a second pneumatic valve 22 and a third check valve 30 are sequentially arranged on the air pipe, and one end of the air pipe is connected to the air pipe 25. Through set up the trachea at the top and add top pressure, be aided with the power of bottom and fifth department, through three sections pressurizations, can be better carry the power that provides to the material.
Example 5:
on the basis of above-mentioned embodiment, in this embodiment, in order to master the clout of storage bin 18 in real time be provided with charge level indicator 19 in storage bin 18, through charge level indicator 19's real time monitoring, guarantee that storage bin 18's clout can guarantee at a certain setting value, when charge level indicator 19 detected no material, few material or when many materials, corresponding valve moved and regulates and control.
Example 6:
in addition to the above-described embodiment, in the present embodiment, in order to enable real-time control of power transmission in the pneumatic pipe 25, the third manual valve 9, the third pressure relief valve 8, the third air-operated valve 7, and the fourth manual valve 6 are provided in this order in the pneumatic pipe 25.
Example 7:
on the basis of the above embodiment, in this embodiment, the feed delivery pipe 27 at the front end of the feed inlet 2 of the boiler 1 is provided with the fourth electromagnetic valves 3, the number of the feed inlets of the boiler 1 is 2, the number of the fourth electromagnetic valves 3 is 2, and the tail end of the feed delivery pipe 27 is provided with the fifth electromagnetic valve 4. Through loading power to 2 front ends of boiler 1 feed inlets, under the prerequisite of normal defeated material, realize spouting the material, do benefit to the evenly distributed of material at boiler 1, be unlikely to pile up.
Example 8:
on the basis of the above embodiment, in this embodiment, for better power transmission, an air pipe is provided on the feed pipe 27 at the front end of the feed port 2 of the boiler 1, a fourth check valve 5 is provided on the air pipe, the other end of the air pipe is connected to the air pipe 25, and 3 sets of air pipes with the fourth check valve 5 are provided and connected to the air pipe 25 in parallel. Divide into three section group with the power supply, pressurize simultaneously, prevented that power from concentrating on a bit, can cut or the defeated material of separation when too big, simultaneously, because boiler 1's pressure, prevent when not carrying out material transport that atmospheric pressure flows backward, is provided with fourth check valve 5 on the trachea.
Example 9:
on the basis of the above embodiment, in the present embodiment, the gas transmission main pipe 29 is provided with the pressure gauge 10, each branch pipe is provided with the pressure gauge, and each pressure gauge, each valve and the material level machine are controlled by the PLC controller with the touch screen.
The working mode of the system is as follows:
the air compressor compresses air, then the air is dried by the air dryer and is conveyed into the air storage tank 11 for storage, in the using process, a manual check main valve 28 on an air conveying main pipe 29 is in a normally open state and is closed when the air compressor is not used, the compressed air passes through the air conveying main pipe 29 in a layered 2 way, one way passes through a conveying pipe 27 to the bottom of a temporary storage bin 18, and the other way passes through a pneumatic pipe 25, power is provided in real time, when materials in a slag bin 24 are conveyed into the temporary storage bin 18 through a pipeline, a material level gauge 19 in the temporary storage bin 18 detects the material level, when the set value is reached, a switch between the temporary storage bin 18 and the slag bin 24 is disconnected to realize material interception, at the moment, a first pneumatic valve 13 on the conveying pipe 27 is opened to provide conveying power to convey the materials, meanwhile, a corresponding valve on the pneumatic pipe 25 is opened to increase a power source to the tail end, and when the single material, under the pressure of the pneumatic tube 25, the material is injected into the boiler 1.
Correspondingly, the output of a bed material pneumatic conveying system is set to be 1.2 multiplied by 10t/h, the conveying flow rate is set to be 8-12m/s, the conveying pressure of a temporary storage bin 18 is set to be 0.30Mpa, the conveying distance is set to be 150 meters, the air consumption for conveying fly ash is set to be 12.5Nm3/min, the air consumption of a system control instrument is 1.0Nm3/min, the air consumption is finally set to be more than or equal to 16.2Nm3/min, the volume of the temporary storage bin 18 is set, a conveying pipe 27 selects a DN150 conveying main pipe, the abrasion of the ash pipe is reduced for reducing the injection flow rate, the ash pipe adopts two-stage reducing, meanwhile, a lining ceramic wear-resistant elbow is adopted, the tangential transition is difficult to realize during the field installation of the elbow of the conveying pipe 27, the abrasion of a common pipe at the joint of the elbow of the conveying pipe 27 is caused to be fast, the environmental sanitation of a, the bending radius of the wear-resistant elbow adopts 1000, and the two ends of the wear-resistant elbow are not added with wear-resistant straight pipe sections
3 feeding boilers 1 are arranged, 2 feeding ports are arranged, a pneumatic valve adopts a pneumatic wear-resistant disc valve, a pneumatic pipe adopts a common seamless steel pipe,
example 10: on the basis of the embodiment, in order to prevent the blockage of the conveying pipeline, a single pipe is adopted, and an automatic blockage prevention device is arranged on the single pipe section. When the concentration of the conveyed materials is high, the conveying of the materials is really and safely operated in a low-speed state (V is 8-12m/s, and the gas flow speed is marked by the system calculation); because of the low speed and stable state, the abrasion to the pipeline, the elbow and the valve is small. When the materials are conveyed, the materials move in a sand dune shape in the pipeline, the conveying concentration is improved while the speed is reduced, the air consumption of the system is greatly reduced, the capacity of an air compressor of the system is reduced, and finally the energy consumption is reduced. The single pipe section is provided with an automatic anti-blocking device which comprises the following components: an outer bypass pipe is arranged at the front end of a third manual valve 9 of the pneumatic pipe, and a booster, an electromagnetic valve and a main conveying pipeline are arranged on the outer bypass pipe along the way to be communicated. When one pipe in the pipeline is blocked (mainly shown as pressure change, material deposition and the like), the first electromagnetic valve 15 is closed, the battery valve on the outer bypass pipe is opened, the third pneumatic valve (7) is closed, the booster acts in a pulse mode immediately, and the fly ash in the pipe is disturbed, so that the fly ash enters a turbulent flow state and is conveyed normally. Even if the system is stopped due to external reasons (sudden power failure, air compressor system failure and manual misoperation), the system can be restarted and smoothly conveyed under the condition that materials exist in the conveying pipe, and thorough ash blockage is avoided.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (10)
1. The utility model provides a boiler plant pressure boost is with bed material conveying system, includes air compressor machine, air dryer, filter, gas holder (11), boiler (1), slag storehouse (24), its characterized in that: the device also comprises a temporary storage bin (18), a material conveying pipe (27) and an air pipe (25); the rear end of the air compressor is connected with an air dryer through a pipeline, the rear end of the air dryer is connected with an air storage tank (11) through a pipeline, the air storage tank (11) is connected with an air delivery main pipe (29), the air delivery main pipe (29) is provided with a manual check main valve (28), a material delivery pipe (27) and an air power pipe (25) are arranged behind the air delivery main pipe (29) in parallel, the material delivery pipe (27) is connected to a feeding port (2) of the boiler (1), and the air power pipe (25) is connected to the material delivery pipe (27); temporary storage feed bin (18) set up on conveying pipeline (27), slag storehouse (24) are connected to temporary storage feed bin (18) feed inlet through the pipeline, are provided with the switch on the pipeline between slag storehouse (24) and temporary storage feed bin (18), and temporary storage feed bin (18) bottom is provided with the baiting valve.
2. The system for conveying bed material for supercharging of a boiler device according to claim 1, wherein: the automatic material conveying device is characterized in that a first manual valve (12), a first pressure relief valve (16), a first pneumatic valve (13) and a first check valve (14) are sequentially arranged on a material conveying pipe (27) at the front end of the temporary storage bin (18), a first electromagnetic valve (15) is arranged at the rear end of the temporary storage bin (18), and the material conveying pipe (27) is arranged at the bottom of a discharge hole of the temporary storage bin (18).
3. The system for conveying bed material for supercharging of a boiler device according to claim 2, wherein: an air pipe is arranged at one fifth of the temporary storage bin (18) close to the discharge port, a second check valve (17) is arranged on the air pipe, and the other end of the air pipe is connected to a conveying pipe between the first pneumatic valve (13) and the first check valve (14).
4. The system for conveying bed material for supercharging of a boiler device according to claim 2, wherein: the top of the temporary storage bin (18) is provided with an air pipe, a second manual valve (20), a second pressure relief valve (21), a second pneumatic valve (22) and a third check valve (30) are sequentially arranged on the air pipe, and one end of the air pipe is connected to the pneumatic pipe (25).
5. The system for conveying bed material for supercharging of a boiler device according to claim 1, wherein: a material level meter (19) is arranged in the temporary storage bin (18).
6. The system for conveying bed material for supercharging of a boiler device according to claim 1, wherein: and the pneumatic pipe (25) is sequentially provided with a third manual valve (9), a third pressure relief valve (8), a third pneumatic valve (7) and a fourth manual valve (6).
7. The system for conveying bed material for supercharging of a boiler device according to claim 1, wherein: be provided with fourth solenoid valve (3) on conveying pipeline (27) of boiler (1) feed inlet (2) front end, boiler (1) feed inlet sets up to 2, fourth solenoid valve (3) set up to 2 groups, conveying pipeline (27) end is provided with fifth solenoid valve (4).
8. The system for conveying bed material for supercharging of a boiler unit according to claim 7, wherein: an air pipe is arranged on a material conveying pipe (27) at the front end of a feeding hole (2) of the boiler (1), a fourth check valve (5) is arranged on the air pipe, the other end of the air pipe is connected and arranged on the air pipe (25), and the air pipes with the fourth check valve (5) are arranged into 3 groups and are connected to the air pipe (25) in parallel.
9. The system for conveying bed material for supercharging of a boiler device according to claim 1, wherein: the gas transmission main pipe (29) is provided with a pressure gauge (10), each branch pipe is provided with a pressure gauge, and each pressure gauge, each switch and each valve are controlled by a PLC (programmable logic controller) with a touch screen.
10. The system for conveying bed material for supercharging of a boiler device according to claim 1, wherein: an air pipe is arranged on a material conveying pipe (27) behind the first electromagnetic valve (15) and connected to an air pipe (25) at the front end of the third manual valve (9), a pulse booster is arranged on the air pipe, and an electromagnetic valve is arranged behind the pulse booster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822053164.7U CN209835029U (en) | 2018-12-07 | 2018-12-07 | Bed material conveying system for supercharging boiler device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822053164.7U CN209835029U (en) | 2018-12-07 | 2018-12-07 | Bed material conveying system for supercharging boiler device |
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| CN209835029U true CN209835029U (en) | 2019-12-24 |
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| CN201822053164.7U Active CN209835029U (en) | 2018-12-07 | 2018-12-07 | Bed material conveying system for supercharging boiler device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109552886A (en) * | 2018-12-07 | 2019-04-02 | 云南云天化石化有限公司 | Boiler plant pressurization bed material transportation system |
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2018
- 2018-12-07 CN CN201822053164.7U patent/CN209835029U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109552886A (en) * | 2018-12-07 | 2019-04-02 | 云南云天化石化有限公司 | Boiler plant pressurization bed material transportation system |
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