CN221172588U

CN221172588U - Coal-fired boiler

Info

Publication number: CN221172588U
Application number: CN202323055963.5U
Authority: CN
Inventors: 李明; 杨磊; 伍鹏飞; 朱杭威; 戴晓骏; 关钟浩; 忻利强; 袁勇; 王俊杰; 余丰
Original assignee: Zhejiang Anji Tianzihu Thermal Power Co ltd
Current assignee: Zhejiang Anji Tianzihu Thermal Power Co ltd
Priority date: 2023-11-11
Filing date: 2023-11-11
Publication date: 2024-06-18
Anticipated expiration: 2033-11-11

Abstract

The application discloses a coal-fired boiler, which relates to the technical field of coal-fired boilers and comprises a boiler body, wherein the outer wall of the top of the boiler body is fixedly connected with a heat exchange box, round openings are formed in the outer walls of two sides of the heat exchange box, the inner walls of the two round openings are fixedly connected with the same heat exchange pipe, a water inlet is formed in the outer wall of one side of the heat exchange box, a water inlet pipe I is fixedly connected with the inner wall of the water inlet, a water outlet is formed in the outer wall of one side of the heat exchange box, a water outlet pipe I is fixedly connected with the inner wall of the water outlet, and a mounting opening I is formed in the outer wall of one side of the boiler body. According to the application, the heat exchange box is arranged at the top of the furnace body, the water inlet pipe II of the furnace body is connected in the heat exchange box, and the heat in the flue gas preheats the water of the heat exchange box through the cooperation between the heat exchange box and the flue pipe, so that the heat in the flue gas is effectively utilized, the high-temperature resistant stirring rod is arranged in the furnace body, and the ash discharge of the furnace body is conveniently assisted through the arrangement of the stirring rod.

Description

Coal-fired boiler

Technical Field

The application relates to the technical field of coal-fired boilers, in particular to a coal-fired boiler.

Background

The coal-fired boiler is coal burned by fuel, steam is generated or hot water is generated after the heat of the coal is converted, but not all the heat is converted effectively, and a part of the heat is consumed in a reactive mode, so that the efficiency problem exists, and the efficiency of the larger boiler is generally higher by 60% -80%.

Through searching, chinese patent publication No. CN209623095U discloses a coal-fired boiler, including the furnace body, link firmly in the furnace body and with the internal part of furnace divide into hot water cavity and combustion chamber's hot plate, locate on the furnace body be used for to the combustion chamber carry coal hopper and be used for carrying out the combustor that heats the burning to the coal material, locate on the furnace body be used for to the combustion chamber in the air inlet unit of injection air and be used for discharging the exhaust gas fume, air inlet unit includes the air-supply line that links firmly on the furnace body and communicates with the combustion chamber and the air-blower of setting on the air-supply line, the air-supply line with be equipped with the heat transfer box that preheats the air between the air-blower, be equipped with the both ends respectively with the preheating pipe and the air-blower intercommunication in the heat transfer box, twine on the outer wall of preheating pipe has the heat transfer pipe that is used for carrying hot water, be equipped with in the exhaust gas pipe that is used for absorbing heat in the flue gas, be equipped with between the heat transfer pipe with the heat transfer pipe and carry the heat transfer device to the heat transfer pipe in the heat transfer pipe again.

One of the coal-fired boilers in the above patent has the following disadvantages: in the above patent, although the heat in the flue gas discharged from the boiler is utilized, the air injected into the furnace is heated by the heat, and the air injected into the furnace is mainly for combustion supporting, so that the heating of the air does not effectively utilize energy.

Disclosure of utility model

In order to solve the problem of heat utilization in the flue gas exhausted from the furnace body, the application provides a coal-fired boiler.

The application provides a coal-fired boiler, which comprises a boiler body, wherein a heat exchange box is fixedly connected to the outer wall of the top of the boiler body, round openings are formed in the outer walls of the two sides of the heat exchange box, two heat exchange pipes are fixedly connected to the inner wall of the round openings, a water inlet is formed in the outer wall of one side of the heat exchange box, a water inlet pipe I is fixedly connected to the inner wall of the water inlet, a water outlet is formed in the outer wall of one side of the heat exchange box, a water drain pipe I is fixedly connected to the inner wall of the first mounting opening, a water inlet pipe II is fixedly connected to the inner wall of the first mounting opening, a smoke pipe II is connected to the first water drain pipe, a partition plate is fixedly connected to the inner wall of the heat exchange box, a water outlet is formed in the outer wall of one side of the partition plate top, a plurality of heat conducting plates are fixedly connected to the inner wall of the partition plate, a connecting port is formed in the outer wall of one side of the heat exchange box, a plurality of copper pipes are connected between the heat conducting plates, one side of the heat exchange pipes are fixedly connected to the outer wall of the heat exchange box, and a box cover is connected to the outer wall of the heat exchange box.

Through adopting above-mentioned structure, through establishing the replacement hot box on the furnace body, the heat in the flue gas is preheated to the water in the hot box through the setting up convenience of hot box, and the water after preheating reinjects into the furnace body to the heating efficiency of furnace body has been improved, has utilized the heat in the flue gas simultaneously effectively.

Optionally: the inner wall fixedly connected with a plurality of heat conduction blocks of heat exchange tube, and the one end fixedly connected with mesh dish of heat conduction block.

Through adopting above-mentioned structure, the setting of heat conduction piece is convenient fixes the mesh dish.

Optionally: the heat conducting block penetrates through the heat exchange tube, and one end of the heat conducting block is fixedly connected to the heat conducting plate.

Through adopting above-mentioned structure, the heat conduction piece is connected on heat conduction board and mesh dish to on the heat transfer of absorption on the mesh dish to the heat conduction board is convenient.

Optionally: the outer wall of one side of the furnace body is provided with a second installation opening, and the inner wall of the second installation opening is fixedly connected with a second drain pipe.

Through adopting above-mentioned structure, the setting of drain pipe two is convenient to discharge the water in the furnace body.

Optionally: the inner wall fixedly connected with hot plate of furnace body, and the hot plate is located the below of drain pipe two.

Through adopting above-mentioned structure, the setting of hot plate conveniently absorbs the heat of coal burning and heats water.

Optionally: and a third mounting opening is formed in the outer wall of one side of the furnace body, and an air inlet pipe is fixedly connected to the inner wall of the third mounting opening.

Through adopting above-mentioned structure, the setting of intake pipe is convenient to carry out the oxygen suppliment to the combustion chamber in the furnace body.

Optionally: the coal bucket is fixedly connected to one side outer wall of the furnace body and is communicated with the inside of the furnace body through a pipeline, and the sealing cover is fixedly connected to one side outer wall of the furnace body.

Through adopting above-mentioned structure, the setting of coal scuttle is convenient to pour into the furnace body with fuel coal.

Optionally: the furnace body is located the outer wall of sealed lid one side and has offered the discharge gate, and the inner wall of discharge gate articulates there is the furnace gate, furnace body bottom inner wall sliding connection has the deposition box.

Through adopting above-mentioned structure, the setting of deposition box is convenient to collect the coal ash.

Optionally: the two-side inner walls of the furnace body are fixedly connected with the same base, the outer wall of the top of the base is provided with a discharge hole, the inner wall of the discharge hole is fixedly connected with a mounting disc, and the outer wall of the top of the mounting disc is provided with a plurality of round holes.

Through adopting above-mentioned structure, the setting of a plurality of round holes on the mounting disc is convenient with the coal ash discharge.

Optionally: the utility model discloses a stirring device for the furnace body, including furnace body, mounting disc, rack, driving shaft, gear motor, chain, mounting disc top outer wall rotation is connected with the puddler of the circular distribution of three equidistance, the puddler transmission shaft passes the one end fixedly connected with sprocket of mounting frame, one side outer wall fixedly connected with gear motor of furnace body, and fixedly connected with sprocket second on gear motor's the output shaft, mounting mouth fourth has been seted up to one side outer wall of furnace body, be connected with same chain between sprocket first and the sprocket second, the chain runs through mounting mouth fourth.

Through adopting above-mentioned structure, gear motor conveniently directly drives the puddler through the chain and rotates, and convenient direct the coal ash is driven out when the puddler rotates.

In summary, the beneficial effects of the application are as follows:

According to the application, the heat exchange box is arranged at the top of the furnace body, the water inlet pipe II of the furnace body is connected in the heat exchange box, and the heat in the flue gas preheats the water of the heat exchange box through the cooperation between the heat exchange box and the flue pipe, so that the heat in the flue gas is effectively utilized, the high-temperature resistant stirring rod is arranged in the furnace body, and the ash discharge of the furnace body is conveniently assisted through the arrangement of the stirring rod.

Drawings

FIG. 1 is a schematic view of the interior of a furnace body of the present application;

FIG. 2 is a schematic view of a part of a furnace body in cross section according to the present application;

FIG. 3 is a schematic view of a base of the present application;

FIG. 4 is a schematic view of the interior of the heat exchange box of the present application;

Fig. 5 is a schematic view of a heat exchange tube of the present application.

Reference numerals illustrate: 1. a furnace body; 5. a heat exchange box; 6. a heat exchange tube; 7. a smoke tube; 8. a first water inlet pipe; 9. a drain pipe I; 11. a case cover; 12. a second drain pipe; 13. an air inlet pipe; 14. a speed reducing motor; 15. a heating plate; 16. a base; 17. an ash deposition box; 18. a stirring rod; 19. a mounting plate; 20. a chain; 21. a mounting frame; 22. a sprocket I; 23. copper pipe; 24. a partition plate; 25. a mesh tray; 26. a heat conductive plate; 27. and a heat conducting block.

Detailed Description

The application is described in further detail below with reference to fig. 1-5.

Referring to fig. 1-2, a coal-fired boiler, including furnace body 1, furnace body 1 top outer wall fixedly connected with heat exchange box 5, the setting of heat exchange box 5 is convenient preheats the water that pours into furnace body 1 into, and the round mouth has all been seted up to the both sides outer wall of heat exchange box 5, the same heat exchange tube 6 of inner wall fixedly connected with of two round mouths, the water inlet has been seted up to the outer wall of one side of heat exchange box 5, the setting of heat exchange tube 6 will be in the flue gas heat transfer out, and the inner wall fixedly connected with inlet tube 8 of water inlet, the outlet has been seted up to the outer wall of one side of heat exchange box 5, and the inner wall fixedly connected with drain pipe 9 of outlet, the cooperation between inlet tube 8 and drain pipe 9 makes things convenient for changing water in succession in the heat exchange box 5.

The first installing port is formed in the outer wall of one side of the furnace body 1, the second water inlet pipe is fixedly connected to the inner wall of the first installing port, the second water inlet pipe is connected with the first water outlet pipe 9, and water in the heat exchange box 5 is conveniently injected into the furnace body 1. The inner wall fixedly connected with baffle 24 of heat exchange box 5, the lower mouth of a river has been seted up to baffle 24 top outer wall one side outer wall, baffle 24 top outer wall fixedly connected with a plurality of heat-conducting plates 26, the setting of heat-conducting plates 26 is convenient to transfer out the heat on the heat exchange tube 6, and the connector has been seted up to one side outer wall of heat-conducting plates 26, the heat exchange tube 6 is installed on the inner wall of connector, be connected with a plurality of copper pipes 23 between the heat-conducting plates 26, copper pipe 23's setting has increased the area of contact of heat-conducting plates 26 and water, and then the efficiency of heating has been improved, one side outer wall fixedly connected with tobacco pipe 7 of furnace body 1, and tobacco pipe 7 is connected on heat exchange tube 6, the outer wall fixedly connected with case lid 11 at heat exchange box 5 top.

Referring to fig. 4-5, the inner wall fixedly connected with a plurality of heat conduction pieces 27 of heat exchange tube 6, and the one end fixedly connected with mesh dish 25 of heat conduction piece 27, heat conduction piece 27 runs through heat exchange tube 6, and the one end fixedly connected with of heat conduction piece 27 is on heat conduction board 26, can be heated by the heat in the flue gas through the setting of mesh dish 25 after, rethread heat conduction piece 27 will heat transfer to on the heat conduction board 26, and heat conduction piece 27 and heat conduction board 26 are copper structure, conveniently pass out the heat in the flue gas fast.

Referring to fig. 1, a second installation port is formed in the outer wall of one side of the furnace body 1, a second drain pipe 12 is fixedly connected to the inner wall of the second installation port, a heating plate 15 is fixedly connected to the inner wall of the furnace body 1, the heating plate 15 is located below the second drain pipe 12, the second drain pipe 12 is arranged to facilitate water in the furnace body 1 to be discharged, the heating plate 15 is heated by heat generated by burning coal, then the heat is transferred to water in the furnace body 1, and the heating plate 15 is made of low alloy steel.

Referring to fig. 1, a third mounting opening is formed in an outer wall of one side of the furnace body 1, an air inlet pipe 13 is fixedly connected to an inner wall of the third mounting opening, and the air inlet pipe 13 is arranged to supply oxygen to a combustion chamber in the furnace body 1 through a blower conveniently. One side outer wall fixedly connected with coal scuttle of furnace body 1, and the coal scuttle is linked together through pipeline and furnace body 1 inside, and one side outer wall fixedly connected with sealed lid of furnace body 1, the setting through the coal scuttle is convenient to add the burning coal in to furnace body 1.

Referring to fig. 1-2, a discharge hole is formed in the outer wall of the furnace body 1, which is positioned on one side of the sealing cover, and a furnace door is hinged to the inner wall of the discharge hole, an ash accumulation box 17 is slidably connected to the inner wall of the bottom of the furnace body 1, and the burnt coal ash is conveniently collected through the arrangement of the ash accumulation box 17.

Referring to fig. 2-3, the same base 16 is fixedly connected with the inner walls of two sides of the furnace body 1, a discharge hole is formed in the outer wall of the top of the base 16, a mounting plate 19 is fixedly connected with the inner wall of the discharge hole, a plurality of round holes are formed in the outer wall of the top of the mounting plate 19, the coal ash after combustion is conveniently discharged through the arrangement of the round holes in the mounting plate 19, and the phenomenon that the coal ash is accumulated to directly influence the combustion of later-stage coal is avoided.

Referring to fig. 1-2, the inner walls of two sides of the furnace body 1 are fixedly connected with a mounting frame 21, the outer walls of the top of a mounting plate 19 are rotationally connected with three stirring rods 18 which are circularly distributed at equal distances, a transmission shaft of each stirring rod 18 penetrates through one end of the mounting frame 21 and is fixedly connected with a first sprocket 22, one outer wall of one side of the furnace body 1 is fixedly connected with a reducing motor 14, an output shaft of each reducing motor 14 is fixedly connected with a second sprocket, one outer wall of one side of the furnace body 1 is provided with a fourth mounting opening, one chain 20 is connected between the first sprocket 22 and the second sprocket, the fourth chain 20 penetrates through the fourth mounting opening, and through the cooperation between each reducing motor 14 and each chain 20, the stirring rods 18 are conveniently and directly driven to rotate, and coal ash accumulated on the mounting plate 19 is conveniently discharged through round holes when the stirring rods 18 rotate.

The implementation principle of the application is as follows: when the boiler is used, combustion coal is injected onto the base 16 on the boiler body 1 through the coal bucket, water on the heating plate 15 is heated after the coal is combusted, the boiled water is discharged through the second water discharge pipe 12, smoke is generated during the coal combustion, a large amount of heat is contained in the smoke, the smoke enters the heat exchange pipe 6 and contacts the mesh plate 25, the mesh plate 25 and the heat conducting block 27 are matched, the heat is conveniently transferred onto the heat conducting plate 26, the water in the heat exchange box 5 is heated through contacting the heat conducting plate 26 and the copper pipe 23, the heated water directly enters the boiler body 1 through the first water discharge pipe 9, the water entering the boiler is preheated, the efficiency of heating the water of the boiler is improved, the contact area between the heat conducting plates 26 in the heat exchange box 5 and the water is increased, and the heat transfer efficiency is improved;

After a period of combustion, a large amount of coal ash is piled up on the base 16, the coal ash is required to be discharged regularly, otherwise normal combustion of the combustion coal is affected, when ash is discharged, the gear motor 14 is started, the gear motor 14 drives the stirring rod 18 to rotate through the chain 20, the piled coal ash on the mounting plate 19 is directly driven out when the stirring rod 18 rotates, the coal ash is collected through the ash accumulation box 17, the furnace door is directly opened when the coal ash is cleaned, the coal ash in the ash accumulation box 17 is cleaned out, and oxygen is conveniently supplied to the furnace body 1 through the arrangement of the air inlet pipe 13.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The utility model provides a coal fired boiler, includes furnace body (1), its characterized in that: the utility model provides a boiler body (1) top outer wall fixedly connected with heat transfer case (5), and the both sides outer wall of heat transfer case (5) has all offered the circle mouth, two the same heat transfer pipe (6) of inner wall fixedly connected with of circle mouth, the water inlet has been seted up to one side outer wall of heat transfer case (5), and the inner wall fixedly connected with inlet tube (8) of water inlet, the outlet has been seted up to heat transfer case (5) one side outer wall, and the inner wall fixedly connected with drain pipe (9) of outlet, installation mouth one has been seted up to one side outer wall of furnace body (1), and the inner wall fixedly connected with inlet tube two, inlet tube two are connected with drain pipe one (9), the inner wall fixedly connected with baffle (24) of heat transfer case (5), lower mouth of a river has been seted up to baffle (24) top outer wall one side outer wall, and the connector has been seted up to one side outer wall of heat transfer plate (26), the inner wall of heat transfer pipe (6) is installed on the connector, be connected with a plurality of copper pipes (23) between heat transfer plate (26), tobacco pipe (7) are connected with each other at one side (7) on heat transfer case (7), heat transfer case (5) are connected with each other.

2. A coal fired boiler as claimed in claim 1, wherein: the inner wall of the heat exchange tube (6) is fixedly connected with a plurality of heat conducting blocks (27), and one end of each heat conducting block (27) is fixedly connected with a mesh plate (25).

3. A coal fired boiler as claimed in claim 2, wherein: the heat conducting block (27) penetrates through the heat exchange tube (6), and one end of the heat conducting block (27) is fixedly connected to the heat conducting plate (26).

4. A coal fired boiler as claimed in claim 1, wherein: the outer wall of one side of the furnace body (1) is provided with a second mounting opening, and the inner wall of the second mounting opening is fixedly connected with a second drain pipe (12).

5. A coal fired boiler as claimed in claim 1, wherein: the inner wall of the furnace body (1) is fixedly connected with a heating plate (15), and the heating plate (15) is positioned below the second drain pipe (12).

6. A coal fired boiler as claimed in claim 1, wherein: the outer wall of one side of the furnace body (1) is provided with a third mounting opening, and the inner wall of the third mounting opening is fixedly connected with an air inlet pipe (13).

7. A coal fired boiler as claimed in claim 1, wherein: the coal bucket is fixedly connected to the outer wall of one side of the furnace body (1), the coal bucket is communicated with the inside of the furnace body (1) through a pipeline, and the sealing cover is fixedly connected to the outer wall of one side of the furnace body (1).

8. A coal fired boiler as claimed in claim 1, wherein: the outer wall of the furnace body (1) positioned at one side of the sealing cover is provided with a discharge hole, the inner wall of the discharge hole is hinged with a furnace door, and the inner wall of the bottom of the furnace body (1) is slidably connected with an ash deposition box (17).

9. A coal fired boiler as claimed in claim 1, wherein: the two-side inner walls of the furnace body (1) are fixedly connected with the same base (16), the outer wall of the top of the base (16) is provided with a discharge hole, the inner wall of the discharge hole is fixedly connected with a mounting plate (19), and the outer wall of the top of the mounting plate (19) is provided with a plurality of round holes.

10. A coal fired boiler as claimed in claim 9, wherein: the utility model discloses a furnace body, including furnace body (1), mounting disc (19), puddler (18) transmission shaft, gear motor (14) and gear motor (14) are fixed connection, mounting disc (19) top outer wall rotation is connected with puddler (18) of three equidistance circular distributions, one end fixedly connected with sprocket (22) that puddler (18) transmission shaft passed mounting frame (21), fixedly connected with sprocket two on the output shaft of gear motor (14) are fixed connection to one side outer wall of furnace body (1), mounting mouth four has been seted up to one side outer wall of furnace body (1), be connected with same chain (20) between sprocket one (22) and the sprocket two, chain (20) run through mounting mouth four.