CN114198771A - Water-proof cold wall high-temperature corrosion-proof once-through boiler - Google Patents
Water-proof cold wall high-temperature corrosion-proof once-through boiler Download PDFInfo
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- CN114198771A CN114198771A CN202111301950.4A CN202111301950A CN114198771A CN 114198771 A CN114198771 A CN 114198771A CN 202111301950 A CN202111301950 A CN 202111301950A CN 114198771 A CN114198771 A CN 114198771A
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- boiler body
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- water
- storage tank
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- 230000007246 mechanism Effects 0.000 claims abstract description 116
- 238000002485 combustion reaction Methods 0.000 claims abstract description 46
- 230000007797 corrosion Effects 0.000 claims abstract description 31
- 238000005260 corrosion Methods 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000000295 fuel oil Substances 0.000 claims abstract description 10
- 239000000446 fuel Substances 0.000 claims description 36
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 14
- 239000003546 flue gas Substances 0.000 abstract description 14
- 239000003245 coal Substances 0.000 abstract description 12
- 239000000779 smoke Substances 0.000 abstract description 8
- 239000007789 gas Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C1/00—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air
- F23C1/10—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air liquid and pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/02—Disposition of air supply not passing through burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/08—Cooling thereof; Tube walls
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention relates to the technical field of boilers, in particular to a direct-current boiler capable of preventing high-temperature corrosion of a water-cooled wall, which comprises a boiler body, wherein a supporting mechanism, a combustion-supporting mechanism and an air distribution mechanism are arranged on the boiler body; through the matching of the combustion-supporting mechanism and the sealing mechanism, fuel oil can be conveniently added into the hearth of the boiler body for supporting combustion under the condition of poor coal quality, more smoke gas generated due to insufficient combustion is avoided, and the impact and corrosion to the water wall pipe are reduced; a layer of parallel air film can be formed on the surface of the water-cooled wall through the arranged air distribution mechanism, so that the impact of flue gas flow perpendicular to the surface of the water-cooled wall is reduced, and the high-temperature corrosion to the water-cooled wall is further reduced.
Description
Technical Field
The invention relates to the technical field of boilers, in particular to a once-through boiler capable of preventing water cold wall from high-temperature corrosion.
Background
The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy; the once-through boiler is a boiler in which feed water sequentially passes through an economizer, a water wall and a superheater and is completely changed into superheated steam by virtue of the pressure of a feed water pump, and is widely used in thermal power stations.
However, in the actual operation process of the conventional once-through boiler, after long-term use, the heated surface of the water cooling wall is in contact with the corrosive fuel containing high sulfur and the high-temperature flue gas for a long time under the conditions of high temperature and high pressure, and even is impacted by the fuel and the flue gas, so that high-temperature corrosion is easily generated, further, the condition of poor coal quality sometimes occurs, so that the stability of combustion is affected, insufficient combustion is caused, more flue gas particles are generated, the high-temperature corrosion on the water cooling wall pipe is further increased, and after the water cooling wall pipe is corroded, the pipe wall is easily thinned, even the risk of pipe explosion is generated, and the normal operation of the whole boiler is finally affected.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a direct-flow boiler for preventing high-temperature corrosion of a water-cooled wall, the fuel injection direction can be adjusted in advance by arranging an adjusting mechanism, flame smoke generated by fuel is prevented from directly colliding with the water-cooled wall, so that the high-temperature corrosion to the water-cooled wall is reduced, a combustion-supporting mechanism can be used for adding fuel oil to a hearth of a boiler body for supporting combustion under the condition of poor coal quality, more smoke generated due to insufficient combustion is prevented, the impact and corrosion to the water-cooled wall tube are reduced, a layer of parallel air film is formed on the surface of the water-cooled wall by arranging an air distribution mechanism, the impact of smoke flow vertical to the surface of the water-cooled wall is reduced, and the high-temperature corrosion to the water-cooled wall is further reduced.
In order to achieve the aim, the invention adopts the following technical scheme that the once-through boiler for preventing the high-temperature corrosion of the water-cooled wall comprises a boiler body, wherein the boiler body is provided with:
the supporting mechanism is arranged below the boiler body and used for supporting the boiler body;
the air distribution mechanism is arranged on the supporting mechanism, extends into the boiler body and is used for introducing airflow into the boiler body to form an air film;
the combustion mechanism is arranged at one end of the boiler body, is communicated with the boiler body and is used for throwing fuel into a hearth of the boiler body;
the combustion-supporting mechanism is arranged on the boiler body, is close to the combustion mechanism, is communicated with the boiler body and is used for adding fuel oil to the boiler body for supporting combustion;
the adjusting mechanism is arranged on the combustion mechanism and used for adjusting the injection direction of the combustion mechanism;
and the sealing mechanism is arranged on the combustion-supporting mechanism and used for controlling the communication state of the combustion mechanism and the boiler body.
In some embodiments of this application, combustion mechanism includes combustor body, linking frame and the nozzle of intercommunication, the one end of combustor body pass through the flange with the linking frame is connected, the linking frame through many connecting axles with the nozzle rotates to be connected, the combustor body is installed the linking frame with the one end setting of nozzle is in inside the boiler body, adjustment mechanism installs on the linking frame.
In some embodiments of this application, adjustment mechanism includes the hand wheel and sets up tooth's socket, gear and slider in the connecting frame, the tooth's socket is seted up in the connecting frame, slider slidable mounting is one inside the connecting axle, the gear with the tooth's socket block connect and with slider fixed connection, the one end of hand wheel with gear connection, the hand wheel can drive the gear with the slider motion.
In some embodiments of this application, still be provided with outside the connection frame and settle the frame, the hand wheel run through in the installation frame and stretch into the connection frame with gear connection, the hand wheel stretches into the part cover of settling the frame is equipped with first spring.
In some embodiments of this application, combustion-supporting mechanism includes storage tank and sliding connection at the ejector pad in the storage tank, the storage tank through a plurality of calandrias with boiler body intercommunication, fixedly connected with connecting rod on the ejector pad, extend to on the connecting rod the outside one end of storage tank is connected with the handle.
In some embodiments of the present application, a stopper rod is connected between the tank and the handle, and the stopper rod is slidably connected inside the tank.
In some embodiments of this application, a plurality of the closing mechanism is all installed to the calandria, closing mechanism including be "U" word form the closing cap and with the spacing post of connecting at the closing cap both ends, the closing cap is established with sliding ground the one end of calandria just is located inside the boiler body, two all overlap on the spacing post and be equipped with the second spring and be located inside the storage tank.
In some embodiments of the present application, the supporting mechanism includes a plurality of supporting rods and a plurality of bottom plates, the boiler body is mounted on the bottom plates through the plurality of supporting rods, a plurality of supporting rods are further fixedly connected between the plurality of bottom plates, and the bottom plates are mounted with the air distribution mechanism.
In some embodiments of this application, air distribution mechanism is including installing intake frame and many air-supply lines on the supporting mechanism, install the fan in the intake frame, many the even installation of one end of air-supply line is in on the intake frame, many the other end of air-supply line stretches into inside the boiler body, will wind in the intake frame is introduced inside the boiler body.
In some embodiments of this application, install the screen cloth in the air-supply line, the air-supply line stretches into two dead levers of boiler body's one end fixedly connected with, be connected with the guide plate of "V" word form on the dead lever, the guide plate run through in the screen cloth.
The invention discloses a direct-flow boiler capable of preventing high-temperature corrosion of a water-cooled wall, which has the beneficial effects that:
1. the adjusting mechanism is arranged on the combustion mechanism, so that the fuel injection direction of the combustion mechanism can be adjusted in advance conveniently according to the actual working condition, flame smoke generated by fuel is prevented from directly colliding with the water-cooled wall, and the high-temperature corrosion to the water-cooled wall is reduced; namely: in actual operation, the user can be according to operating condition, tear the combustor body down in advance, manual hand wheel is pressed again, then the hand wheel pressurized produces the removal, and then it moves together to drive the gear, the slider slides on even epaxial thereupon, first spring is compressed simultaneously, until making the gear break away from the tooth's socket, this moment, can rotate the hand wheel, hand wheel rotation drives gear rotation, gear rotation drives even rotation of axle through the slider, and then drive the nozzle and rotate, treat that the nozzle rotates to suitable position, loosen the hand wheel, the tooth's socket will be gone into to the block again to the gear under the effect of first spring, the completion is fixed to the nozzle, make fuel spout from fixed direction, the flame flue gas of avoiding fuel to produce carries out direct impact to the water-cooling wall.
2. The sealing mechanism is arranged on the combustion-supporting mechanism, and fuel oil is conveniently added into a hearth of the boiler body to support combustion under the condition of poor coal quality through the matching of the combustion-supporting mechanism and the sealing mechanism, so that more flue gas generated due to insufficient combustion is avoided, the impact and corrosion to a water wall tube are reduced, and the high-temperature corrosion of the water wall is relieved; namely: in practical operation, when the coal quality is poor and the combustion is insufficient, a user can manually hold the handle to pull the handle, the handle moves to drive the connecting rod to move so as to drive the push block to move until the push block is pulled to one end inside the storage tank, the limiting rod moves inside the storage tank along with the push block, then the cover on the storage tank is opened, corresponding fuel is added into the storage tank, the cover is closed again after the fuel is added, the user can hold the handle to push the handle, the handle moves to drive the connecting rod and the push block to move, the push block pushes the fuel in the storage tank, the fuel is transferred to the sealing cover through the exhaust pipe after being pressed, the sealing cover moves after being pressed, the limiting column moves along with the exhaust pipe, the second spring is compressed at the same time, when the sealing cover is completely separated from the inside of the storage tank, the fuel in the storage tank can be discharged through the exhaust pipe and enters a hearth in the boiler body, thereby it is combustion-supporting to add the fuel in the furnace of boiler body under the not good condition of coal quality conveniently, guarantees that this internal burning of boiler is abundant, reduces the flue gas and produces.
3. By arranging the air distribution mechanism, air flow is introduced into the boiler body to form a layer of parallel air film on the surface of the water-cooled wall, so that the impact of flue gas flow perpendicular to the surface of the water-cooled wall is reduced, and the high-temperature corrosion to the water-cooled wall is further reduced; namely: in actual operation, a user can switch on the fan, the fan starts to work, air is blown towards the inside of the air inlet frame, air flow enters the air pipe, immediately passes through the screen and the guide plate, and under the action of the guide plate in the shape of the arc cone, the air flow can be sprayed out in the direction parallel to the water-cooled wall, so that a layer of parallel air film is conveniently formed on the surface of the water-cooled wall, and the surface of the water-cooled wall is protected.
Drawings
FIG. 1 is a schematic view of the overall structure of a once-through boiler with water-proof cold wall for high temperature corrosion according to an embodiment of the present invention;
FIG. 2 is a schematic view of a connection structure of a combustion mechanism and an adjusting mechanism according to an embodiment of the present invention;
FIG. 3 is an enlarged view of the structure at B in FIG. 2 according to the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 5 is a schematic structural diagram of a combustion-supporting mechanism in an embodiment of the invention;
FIG. 6 is a schematic view of a connection structure of a combustion supporting mechanism and a sealing mechanism in the embodiment of the invention;
FIG. 7 is an enlarged view of the structure at C in FIG. 6 according to the present invention;
fig. 8 is a schematic internal structure diagram of the air distribution mechanism in the embodiment of the present invention.
In the figure: 1. a boiler body; 2. a support mechanism; 201. a stay bar; 202. a base plate; 203. a strut; 3. A combustion mechanism; 301. a burner body; 302. a flange; 303. a bolt; 304. a connecting frame; 305. a nozzle; 306. a connecting shaft; 4. an adjustment mechanism; 401. a hand wheel; 402. a mounting frame; 403. a first spring; 404. A gear; 405. a slider; 406. a tooth socket; 5. a combustion-supporting mechanism; 501. a storage tank; 502. a handle; 503. A connecting rod; 504. a limiting rod; 505. a push block; 506. arranging pipes; 6. a sealing mechanism; 601. sealing the cover; 602. A limiting column; 603. a second spring; 604. a seal ring; 7. a wind distribution mechanism; 701. an air inlet frame; 702. A fan; 703. an air duct; 704. fixing the rod; 705. a baffle; 706. screening a screen; .
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present application will be understood in specific cases to those of ordinary skill in the art
As shown in fig. 1 and fig. 2, in some embodiments of the present application, a once-through boiler capable of preventing high temperature corrosion of a water-cooled wall comprises a boiler body 1, wherein a supporting mechanism 2, a combustion mechanism 3, a combustion-supporting mechanism 5 and an air distribution mechanism 7 are arranged on the boiler body 1, an adjusting mechanism 4 is arranged on the combustion mechanism 3, and a sealing mechanism 6 is arranged on the combustion-supporting mechanism 5; the supporting mechanism 2 is arranged below the boiler body 1 and used for supporting the boiler body 1; the air distribution mechanism 7 is arranged on the supporting mechanism 2 and extends into the boiler body 1, and is used for introducing air flow into the boiler body 1 to form an air film; the combustion mechanism 3 is arranged at one end of the boiler body 1, is communicated with the boiler body 1 and is used for feeding fuel into a hearth of the boiler body 1, and the adjusting mechanism 4 is arranged on the combustion mechanism 3 and is used for adjusting the injection direction of the combustion mechanism 3; the combustion-supporting mechanism 5 is installed on the boiler body 1, is close to the combustion mechanism 3 and is communicated with the boiler body 1 for adding fuel to the boiler body 1 for supporting combustion, and the closing mechanism 6 is installed on the combustion-supporting mechanism 5 for controlling the communication state of the combustion mechanism 3 and the boiler body 1.
It should be noted that, the adjusting mechanism 4 is arranged on the combustion mechanism 3, and the fuel injection direction of the combustion mechanism 3 is adjusted in advance through the adjusting mechanism 4, so that flame smoke generated by fuel is prevented from directly colliding with the water-cooled wall, and high-temperature corrosion to the water-cooled wall is reduced; the combustion-supporting mechanism 5 is arranged on the boiler body 1, the closing mechanism 6 is arranged on the combustion-supporting mechanism 5, fuel oil is added into a hearth of the boiler body 1 to support combustion under the condition of poor coal quality through the matching of the combustion-supporting mechanism 5 and the closing mechanism 6, so that more flue gas generated by insufficient combustion is avoided, the impact and corrosion to a water wall pipe are reduced, and the high-temperature corrosion of the water wall is relieved; the air distribution mechanism 7 is arranged on the supporting mechanism 2 and is arranged in the boiler body 1, a layer of parallel air film is formed on the surface of the water-cooled wall through the air distribution mechanism 7, the impact of flue gas flow perpendicular to the surface of the water-cooled wall is reduced, and the high-temperature corrosion to the water-cooled wall is further reduced.
As shown in fig. 2, in some embodiments of the present application, the combustion mechanism 3 includes a burner body 301, the burner body 301 is mounted on the boiler body 1, and one end of the burner body 301 extends into the boiler body 1, a connection frame 304 is disposed at one end of the burner body 301 extending into the boiler body 1, and the connection frame 304 is rotatably connected to a nozzle 305 through two connection shafts 306; the burner body 301 and the connecting frame 304 are fixedly connected through a flange 302, and the flange 302 between the burner body 301 and the connecting frame 304 is fixedly connected through a bolt 303; when the boiler body 1 works, the burner body 301 is matched with the boiler powder feeder to operate, meanwhile, the burner body 301 is powered on, then the burner body 301 starts to work, high-temperature and high-pressure air mixed with fuel coal powder is sprayed out, and then enters a hearth of the boiler body 1 through the connecting frame 304 and the nozzle 305 to start a combustion process.
As shown in fig. 2 and 3, in some embodiments of the present application, the adjusting mechanism 4 includes a mounting frame 402 and a hand wheel 401, the mounting frame 402 is fixedly mounted on the connecting frame 304, one end of the hand wheel 401 penetrates through the mounting frame 402 and extends into the connecting frame 304, a first spring 403 is wound on the hand wheel 401, and the first spring 403 is disposed between the hand wheel 401 and the mounting frame 402; a tooth groove 406 is formed in the connecting frame 304, a gear 404 is connected to the tooth groove 406 in a clamping manner, one end, extending into the connecting frame 304, of the hand wheel 401 is connected with the gear 404, the gear 404 is hollow, a sliding block 405 is fixedly connected to the gear 404, and the sliding block 405 is clamped in one connecting shaft 306; in actual operation, a user can detach the burner body 301 in advance according to actual working conditions, and manually press the hand wheel 401, so that the hand wheel 401 is pressed to move, thereby moving the gear 404 together, the slider 405 slides along the gear 404 on the connecting shaft 306, while the first spring 403 is compressed until the gear 404 is disengaged from the tooth slot 406, at which time, the hand wheel 401 can be rotated, the hand wheel 401 is rotated to drive the gear 404 to rotate, the gear 404 drives the connecting shaft 306 to rotate through the sliding block 405, and then the nozzle 305 is driven to rotate, when the nozzle 305 rotates to a proper position, the hand wheel 401 is loosened, the gear 404 is re-engaged into the tooth slot 406 by the first spring 403, completing the fixing of the nozzle 305, so that the fuel is injected at the corresponding position, thereby avoiding the flame smoke generated by the fuel to directly collide the water-cooled wall and reducing the high-temperature corrosion to the water-cooled wall.
As shown in fig. 4 and 5, in some embodiments of the present application, the combustion-supporting mechanism 5 is provided with two pipes which are respectively located at two sides of the combustion mechanism 3, the combustion-supporting mechanism 5 includes a storage tank 501, the storage tank 501 is fixedly installed on the boiler body 1, a push block 505 is slidably connected in the storage tank 501, one end of the push block 505 is conical, the other end of the push block 505 is fixedly connected with a connecting rod 503, the connecting rod 503 extends to the outside of the storage tank 501 and is connected with a handle 502, the handle 502 is also fixedly connected with a limit rod 504, the other end of the limit rod 504 is slidably connected in the storage tank 501, the storage tank 501 is fixedly connected with a plurality of exhaust pipes 506, and the storage tank 501 is communicated with the inside of the boiler body 1 through the exhaust pipes 506; in practical operation, when the coal quality is not good and the combustion is insufficient, a user can manually hold the handle 502 to pull the handle 502, the handle 502 drives the connecting rod 503 to move when moving, the pushing block 505 is further driven to move until the pushing block 505 is pulled to one end inside the storage tank 501, the limiting rod 504 moves inside the storage tank 501 along with the limiting rod, then the cover on the storage tank 501 is opened, corresponding fuel oil is added into the storage tank 501, the cover is closed again after the fuel oil is added, the user can hold the handle 502 to push the handle 502, the handle 502 moves to drive the connecting rod 503 and the pushing block 505 to move, the pushing block 505 pushes the fuel oil inside the storage tank 501, and the fuel oil enters the hearth of the boiler body 1 through the exhaust pipe 506 after being pressed.
As shown in fig. 6 and 7, in some embodiments of the present application, a closing mechanism 6 is installed on each tube array 506, the closing mechanism 6 includes a u-shaped closing cap 601 and a limiting post 602, the closing cap 601 is disposed inside the boiler body 1 and slidably connected to the tube array 506, a sealing ring 604 is fixedly connected inside the closing cap 601, the whole body of the closing cap 601 is u-shaped, two limiting posts 602 are fixedly connected to two ends of the closing cap 601, the limiting posts 602 are slidably connected to the inside of the tank 501, a second spring 603 is wound on the limiting post 602, and the second spring 603 is disposed between the limiting post 602 and the tank 501; when adding the fuel in the furnace through combustion-supporting mechanism 5 to boiler body 1, the fuel passes through behind calandria 506 and transmits for closing cap 601, produce after the closing cap 601 pressurized and remove, spacing post 602 produces thereupon and removes, second spring 603 is compressed simultaneously, break away from storage tank 501 inside back completely when closing cap 601, the fuel of storage tank 501 inside will be discharged through calandria 506, get into in the furnace of boiler body 1 inside, make the fuel in the boiler can fully burn, thereby avoid the insufficient flue gas that produces more of burning, and then reduce the impact and the corruption to the water wall pipe, alleviate the high temperature corrosion to the water wall.
As shown in fig. 1, in some embodiments of the present application, the supporting mechanism 2 includes a plurality of supporting rods 201 and a plurality of bottom plates 202, two bottom plates 202 are disposed at the bottom of the boiler body 1, two supporting rods 201 are fixedly connected to each bottom plate 202, the supporting rods 201 are fixedly connected to the boiler body 1, and two supporting rods 203 are fixedly connected between the two bottom plates 202; in use, the whole device is supported and arranged by the support rods 201 and the bottom plate 202, and the support rods 203 reinforce the supporting force of the bottom plate 202.
As shown in fig. 1 and 8, in some embodiments of the present application, an air distribution mechanism 7 is installed on a bottom plate 202, the air distribution mechanism 7 includes an air inlet frame 701 and a plurality of air inlet pipes 703, the air inlet frame 701 is fixedly connected to the bottom plate 202, a fan 702 is installed on the air inlet frame 701, one end of each of the plurality of air pipes 703 is uniformly installed on the air inlet frame 701, the other end of each of the plurality of air pipes 703 extends into a boiler body 1, two fixing rods 704 are fixedly connected to each of the air pipes 703 located inside the boiler body 1, a guide plate 705 is fixedly connected to each of the two fixing rods 704, a screen 706 is installed inside each of the air pipes 703, and the guide plate 705 penetrates through the screen 706; in practical operation, a user can switch on the fan 702, the fan 702 starts to work, air is blown towards the inside of the air inlet frame 701, airflow enters the air pipe 703 along with the air pipe, then passes through the screen 706 and the guide plate 705, and is ejected in a direction parallel to the water-cooled wall under the action of the guide plate 705 in the shape of an arc cone, so that a layer of parallel air film is formed on the surface of the water-cooled wall, the impact of flue gas flow perpendicular to the surface of the water-cooled wall is reduced, and the high-temperature corrosion to the water-cooled wall is further reduced.
In conclusion, the once-through boiler capable of preventing the high-temperature corrosion of the water-cooled wall provided by the invention has the functions of supporting and arranging the whole device through the support rods 201 and the bottom plate 202, and the support rods 203 strengthen the supporting force of the bottom plate 202; when the boiler body 1 starts to work, the burner body 301 is matched with a boiler powder feeder to operate, meanwhile, the burner body 301 is switched on, then the burner body 301 starts to work, high-temperature and high-pressure air mixed with fuel coal powder is sprayed into a hearth of the boiler body 1 through the connecting frame 304 and the nozzle 305, and a combustion process is started; meanwhile, in practical operation, a user can detach the burner body 301 in advance according to practical working conditions, then manually press the hand wheel 401, the hand wheel 401 is pressed to move, the gear 404 is driven to move together, the sliding block 405 slides on the connecting shaft 306, the first spring 403 is compressed at the same time until the gear 404 is separated from the tooth groove 406, at the moment, the hand wheel 401 can be rotated, the hand wheel 401 rotates to drive the gear 404 to rotate, the gear 404 rotates to drive the connecting shaft 306 to rotate through the sliding block 405, the nozzle 305 is driven to rotate, when the nozzle 305 rotates to a proper position, the hand wheel 401 is released, the gear 404 is clamped into the tooth groove 406 again under the action of the first spring 403, the nozzle 305 is fixed, therefore, the spraying direction of the nozzle 305 can be adjusted in advance according to practical working conditions, and flame smoke generated by fuel is prevented from directly colliding with a water cooling wall, the high-temperature corrosion to the water-cooled wall is reduced; furthermore, a user can also switch on the fan 702 to enable the fan 702 to work, and blow towards the inside of the air inlet frame 701, airflow enters the air pipe 703 along with the air pipe, then passes through the screen 706 and the guide plate 705, and is ejected in a direction parallel to the water-cooled wall under the action of the guide plate 705 in an arc cone shape, so that a layer of parallel air film is formed on the surface of the water-cooled wall, the impact of flue gas flow vertical to the surface of the water-cooled wall is reduced, and the high-temperature corrosion to the water-cooled wall is further reduced; in addition, when the coal quality is poor and the combustion is insufficient, a user can manually hold the handle 502 to pull, the handle 502 moves to drive the connecting rod 503 to move and further drive the push block 505 to move until the push block 505 is pulled to one end inside the storage tank 501, the limiting rod 504 moves inside the storage tank 501 along with the push block, then the cover on the storage tank 501 is opened, corresponding fuel is added into the storage tank 501, the cover is closed again after the fuel is added, then the user can hold the handle 502 to push, the handle 502 moves to drive the connecting rod 503 and the push block 505 to move, the push block 505 pushes the fuel inside the storage tank 501, the fuel is transferred to the sealing cover 601 through the discharge pipe 506 after being pressed, the sealing cover 601 moves after being pressed, the limiting column 602 moves along with the sealing rod, the second spring 603 is compressed at the same time, and when the sealing cover 601 is completely separated from the storage tank 501, the inside fuel of storage tank 501 will be discharged through calandria 506, gets into in the inside furnace of boiler body 1 to the convenience adds the fuel combustion-supporting in the furnace of boiler body 1 under the not good condition of coal quality, avoids the insufficient more flue gas that produces of burning, and then reduces impact and the corruption to the water wall pipe, further alleviates the high temperature corrosion to the water wall.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a direct current boiler of waterproof cold wall high temperature corrosion, includes boiler body (1), its characterized in that, install on boiler body (1):
the supporting mechanism (2) is arranged below the boiler body (1) and used for supporting the boiler body (1);
the air distribution mechanism (7) is arranged on the supporting mechanism (2) and extends into the boiler body (1) for introducing air flow into the boiler body (1) to form an air film;
the combustion mechanism (3) is arranged at one end of the boiler body (1), is communicated with the boiler body (1) and is used for feeding fuel into a hearth of the boiler body (1);
the combustion-supporting mechanism (5) is arranged on the boiler body (1) and is close to the combustion mechanism (3), communicated with the boiler body (1) and used for adding fuel oil to the boiler body (1) for supporting combustion;
the adjusting mechanism (4) is arranged on the combustion mechanism (3) and is used for adjusting the injection direction of the combustion mechanism (3);
and the sealing mechanism (6) is arranged on the combustion-supporting mechanism (5) and is used for controlling the communication state of the combustion mechanism (3) and the boiler body (1).
2. The once-through boiler capable of preventing water from being corroded by high temperature and cold wall of claim 1 is characterized in that the combustion mechanism (3) comprises a combustor body (301), a connecting frame (304) and a nozzle (305) which are communicated, one end of the combustor body (301) is connected with the connecting frame (304) through a flange (302), the connecting frame (304) is rotatably connected with the nozzle (305) through a plurality of connecting shafts (306), one end of the combustor body (301) provided with the connecting frame (304) and the nozzle (305) is arranged inside the boiler body (1), and the adjusting mechanism (4) is arranged on the connecting frame (304).
3. The once-through boiler capable of preventing water from being corroded by cold wall high temperature as claimed in claim 2, wherein the adjusting mechanism (4) comprises a hand wheel (401), and a tooth groove (406), a gear (404) and a sliding block (405) which are arranged in the connecting frame (304), the tooth groove (406) is arranged in the connecting frame (304), the sliding block (405) is slidably mounted inside one connecting shaft (306), the gear (404) is connected with the tooth groove (406) in a clamping manner and is fixedly connected with the sliding block (405), one end of the hand wheel (401) is connected with the gear (404), and the hand wheel (401) can drive the gear (404) and the sliding block (405) to move.
4. The once-through boiler capable of preventing water from being corroded by cold wall at high temperature according to claim 3, wherein a mounting frame (402) is further arranged outside the connecting frame (304), the hand wheel (401) penetrates through the mounting frame (402) and extends into the connecting frame (304) to be connected with the gear (404), and a first spring (403) is sleeved on a portion, extending into the mounting frame (402), of the hand wheel (401).
5. The once-through boiler capable of preventing the water from being corroded by the high temperature of the cold wall of the water tank according to the claim 1, wherein the combustion-supporting mechanism (5) comprises a storage tank (501) and a push block (505) connected in the storage tank (501) in a sliding manner, the storage tank (501) is communicated with the boiler body (1) through a plurality of calandria (506), a connecting rod (503) is fixedly connected to the push block (505), and a handle (502) is connected to one end of the connecting rod (503) extending to the outside of the storage tank (501).
6. The once-through boiler of claim 5, characterized in that a limiting rod (504) is connected between the storage tank (501) and the handle (502), and the limiting rod (504) is slidably connected in the storage tank (501).
7. The once-through boiler of claim 5, characterized in that said closing mechanism (6) is installed on a plurality of said calandria (506), said closing mechanism (6) comprises a U-shaped cover (601) and two position-limiting posts (602) connected to two ends of said cover (601), said cover (601) is slidably sleeved on one end of said calandria (506) and located inside said boiler body (1), and two position-limiting posts (602) are sleeved with a second spring (603) and located inside said storage tank (501).
8. The once-through boiler capable of preventing water from being corroded by the high temperature of the cold wall of the boiler according to the claim 1, wherein the supporting mechanism (2) comprises a plurality of support rods (201) and a plurality of bottom plates (202), the boiler body (1) is installed on the bottom plates (202) through the plurality of support rods (201), a plurality of support rods (203) are fixedly connected among the plurality of bottom plates (202), and the air distribution mechanism (7) is installed on the bottom plates (202).
9. The once-through boiler capable of preventing water from being corroded by the cold wall at the high temperature according to claim 1, wherein the air distribution mechanism (7) comprises an air inlet frame (701) and a plurality of air inlet pipes (703) which are installed on the supporting mechanism (2), a fan (702) is installed in the air inlet frame (701), one ends of the plurality of air inlet pipes (703) are evenly installed on the air inlet frame (701), and the other ends of the plurality of air inlet pipes (703) extend into the boiler body (1) to introduce air in the air inlet frame (701) into the boiler body (1).
10. The once-through boiler of the waterproof cold wall high temperature corrosion of claim 9, characterized in that a screen (706) is installed in the air inlet pipe (703), two fixing rods (704) are fixedly connected to one end of the air inlet pipe (703) extending into the boiler body (1), a V-shaped guide plate (705) is connected to the fixing rods (704), and the guide plate (705) penetrates through the screen (706).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111301950.4A CN114198771A (en) | 2021-11-04 | 2021-11-04 | Water-proof cold wall high-temperature corrosion-proof once-through boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111301950.4A CN114198771A (en) | 2021-11-04 | 2021-11-04 | Water-proof cold wall high-temperature corrosion-proof once-through boiler |
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| Publication Number | Publication Date |
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| CN114198771A true CN114198771A (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111301950.4A Pending CN114198771A (en) | 2021-11-04 | 2021-11-04 | Water-proof cold wall high-temperature corrosion-proof once-through boiler |
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| CN200955734Y (en) * | 2006-10-18 | 2007-10-03 | 岳中一 | Side-swing oxygen-oil ignition, stable-combustion, combustion-supporting burner |
| CN206831477U (en) * | 2017-04-19 | 2018-01-02 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of adherent wind snout device of coal-burning boiler |
| WO2019107355A1 (en) * | 2017-11-29 | 2019-06-06 | 川崎重工業株式会社 | Burner device and multi-tube through-flow boiler device |
| CN113137598A (en) * | 2021-05-20 | 2021-07-20 | 华能安源发电有限责任公司 | Burner nozzle device for reducing erosion corrosion of boiler water cooling wall of coal-fired power plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1055230A (en) * | 1991-01-16 | 1991-10-09 | 哈尔滨普华煤燃烧技术开发中心 | Burner for various kinds of coal |
| US6244524B1 (en) * | 1997-12-05 | 2001-06-12 | Saint-Gobain Glass France | Fuel injection burner |
| CN2514232Y (en) * | 2001-12-18 | 2002-10-02 | 上海高安火电技术有限公司 | 3-D swinging DC burner jet nozzle |
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