CN210891743U

CN210891743U - Environment-friendly energy-saving supercritical boiler

Info

Publication number: CN210891743U
Application number: CN201921773362.9U
Authority: CN
Inventors: 姜涛; 牟丙义; 于杨; 陈军; 孙师泽; 白世林; 林玉成
Original assignee: Hebei Zhengeng Boiler Equipment Co ltd
Current assignee: Hebei Zhengeng Boiler Equipment Co ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-06-30
Anticipated expiration: 2029-10-22

Abstract

The utility model relates to the technical field of boilers, in particular to an environment-friendly and energy-saving supercritical boiler, which improves the combustion efficiency of pulverized coal and can partially recover heat in the discharged flue gas, thereby improving the practicability; including the boiler body, the coal storage box, smash the case, the coal conveying passageway, the air-blower, be provided with the combustion box on the boiler body, the top of combustion box is provided with the pipe of discharging fume, the inside of coal storage box is provided with places the chamber, and be provided with agitating unit placing the intracavity, agitating unit includes the stay tube down, the seal box down, the spliced pole, go up the seal box, go up the stay tube, the multiunit stirring pipe, ball bearing down, go up ball bearing, driven gear, pivot and driving gear, the top of coal storage box is provided with the coal mouth, be provided with the transport flood dragon in the coal conveying passageway, the inside of smashing the case is provided with the working chamber, still including smashing the motor, the transmission shaft, reducing mechanism and unloading pipe, the output of unloading pipe and the coal inlet intercommunication of.

Description

Environment-friendly energy-saving supercritical boiler

Technical Field

The utility model relates to a technical field of boiler especially relates to an energy-conserving supercritical boiler of environmental protection.

Background

As is well known, the working media in the boiler are all water, and the critical pressure of the water is 22.115MPa374.15 ℃; at the pressure and the temperature, the latent heat of vaporization of water and steam is equal to zero, a two-phase region does not exist, namely, the water is changed into steam continuously and is carried out in a single-phase mode, namely, the critical point of the water is called, the supercritical boiler is called when the pressure of a working medium in the boiler is lower than the pressure, the supercritical boiler is called when the pressure of the working medium in the boiler is higher than the pressure, and at present, the supercritical boiler is called when the pressure of the working medium in the boiler is higher than the pressure, and the supercritical boiler is called as precisely a high-efficiency supercritical boiler.

The combustion efficiency of the existing supercritical boiler pulverized coal is low, and the discharged flue gas contains a large amount of heat, so that the energy waste is caused, and the practicability is low.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides an it is not enough to prior art, the utility model provides an improve combustion efficiency of buggy can carry out the part to retrieve to the heat in the exhaust flue gas to improve the environmental protection energy-saving supercritical boiler of practicality.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: an environment-friendly energy-saving supercritical boiler comprises a boiler body, wherein a combustion box is arranged on the boiler body, and a smoke exhaust pipe is arranged at the top end of the combustion box; the coal storage tank is internally provided with a placing cavity, and a stirring device is arranged in the placing cavity and comprises a lower supporting tube, a lower sealing box, a connecting column, an upper sealing box, an upper supporting tube and a plurality of groups of stirring tubes, wherein the middle part of the bottom end of the coal storage tank is provided with a fixing through hole, the bottom end of the lower sealing box is provided with a lower mounting through hole, a lower ball bearing is fixedly mounted in the lower mounting through hole, the top end of the lower supporting tube penetrates through the lower fixing through hole from the bottom end of the coal storage tank and extends into the placing cavity and penetrates through the lower ball bearing and extends into the lower sealing box, the lower supporting tube is fixedly connected with the coal storage tank, the middle part of the top end of the coal storage tank is provided with an upper mounting through hole, an upper ball bearing is fixedly mounted in the upper mounting through hole, the bottom end of the upper supporting tube penetrates through the upper ball bearing and extends into the placing cavity from the top end of the coal storage tank and is communicated with the middle part of, a driven gear is fixedly installed on the outer side of the upper supporting tube, a rotating motor is installed at the top end of the coal storage box, a rotating shaft is arranged at the output end of the bottom of the rotating motor, the bottom end of the rotating shaft extends into the placing cavity from the top end of the coal storage box, a driving gear is installed at the bottom end of the rotating shaft and is meshed with the driven gear, the multiple groups of stirring tubes are all of a frame structure, the top ends of the multiple groups of stirring tubes are all communicated with the outer side of the upper sealing box, the bottom ends of the multiple groups of stirring tubes are all communicated with the outer side of the lower sealing box, the output end of the smoke exhaust tube is communicated with the bottom end of the lower supporting tube, a coal feeding port is formed in the top end of the coal storage box, the right end of the coal conveying channel is communicated with the bottom of the left end of the coal storage box, the left end of the coal conveying channel is communicated with, and be provided with crushing motor on the top of smashing the case, the bottom output of smashing the motor is provided with the transmission shaft, the bottom of transmission shaft stretches into to the working chamber from the top of smashing the case to be provided with on the transmission shaft and carry out kibbling reducing mechanism to the buggy, the bottom intercommunication of smashing the case is provided with the unloading pipe, the output of unloading pipe and the entering coal mouth intercommunication of burning box, the air-blower is installed on the unloading pipe to the output of air-blower is just to the entering coal mouth of burning box.

Preferably, reducing mechanism includes sleeve pipe, circular sieve and two sets of crushing compression rollers, circular sieve transversely installs in the bottom of working chamber, the outside of transmission shaft is located to the sleeve pipe cover to be provided with a plurality of spacing grooves on the sheathed tube inside wall, the outside of transmission shaft is provided with a plurality of spacing slider, a plurality of spacing slider slide respectively and set up in a plurality of spacing inslots, and multiunit crushing blade is installed in the sheathed tube outside, two sets of crushing compression rollers are rotatable the installation respectively in sheathed tube outside bottom to two sets of crushing compression rollers set up relatively, and the bottom of two sets of crushing compression rollers all pastes tightly with the top of circular sieve.

Preferably, the multiple groups of stirring pipes are uniformly arranged between the upper seal box and the lower seal box at equal angles.

Preferably, a plurality of groups of shoveling plates which are obliquely arranged are arranged on the outer sides of the plurality of groups of stirring pipes.

Preferably, the bottom end of the lower seal box is in contact with the inner bottom wall of the placing cavity.

Preferably, the upper seal box, the lower seal box, the connecting column and the multiple groups of stirring pipes are all welded and fixed.

(III) advantageous effects

Compared with the prior art, the utility model provides an energy-conserving supercritical boiler of environmental protection possesses following beneficial effect:

1. according to the environment-friendly and energy-saving supercritical boiler, high-temperature flue gas discharged by a smoke discharge pipe enters a lower seal box through a lower supporting pipe, then enters an upper seal box through a plurality of groups of stirring pipes and is discharged from an upper supporting pipe, heat of the high-temperature flue gas is transferred to pulverized coal in a coal storage box to preheat the pulverized coal, a driving gear is driven to rotate through a rotating motor, the driving gear drives a driven gear, the upper supporting pipe, a connecting shaft and a plurality of groups of stirring pipes to slowly rotate, the preheating effect of the pulverized coal is improved, stirring is carried out while heating, and partial recovery can be carried out on heat in the discharged flue gas, so that the practicability is improved;

2. this supercritical boiler of environmental protection and energy saving, the buggy through storing up in the coal bunker passes through the defeated coal passageway and carries into crushing case, drives transmission shaft and reducing mechanism through smashing the motor and rotates to smash the buggy that gets into crushing case and refine, the leading-in unloading pipe of buggy after refining blows in the combustion box under the drive of air-blower and burns in, thereby improves the combustion efficiency of buggy.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic perspective view of the present invention;

fig. 3 is a schematic view of a part of an enlarged structure at a in fig. 1 according to the present invention;

fig. 4 is a schematic view of the present invention at a portion B of fig. 1;

fig. 5 is a schematic perspective view of the stirring device of the present invention;

in the drawings, the reference numbers: 1. a boiler body; 2. a combustion box; 3. a smoke exhaust pipe; 4. a coal storage tank; 5. a crushing box; 6. a coal conveying channel; 7. a blower; 8. a lower support tube; 9. a lower seal box; 10. connecting columns; 11. an upper seal box; 12. an upper support tube; 13. a stirring pipe; 14. a lower ball bearing; 15. an upper ball bearing; 16. a driven gear; 17. a rotating shaft; 18. a driving gear; 19. a coal feeding port; 20. conveying a flood dragon; 21. a grinding motor; 22. a drive shaft; 23. a discharging pipe; 24. a sleeve; 25. a circular sieve plate; 26. crushing and pressing rollers; 27. a limiting groove; 28. a limiting slide block; 29. a crushing blade; 30. a shovel plate; 31. a rotating electric machine.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, an environment-friendly and energy-saving supercritical boiler comprises a boiler body 1, wherein a combustion box 2 is arranged on the boiler body 1, and a smoke exhaust pipe 3 is arranged at the top end of the combustion box 2; the coal storage tank is characterized by further comprising a coal storage tank 4, a crushing tank 5, a coal conveying channel 6 and an air blower 7, wherein a placing cavity is formed inside the coal storage tank 4, a stirring device is arranged in the placing cavity and comprises a lower supporting pipe 8, a lower sealing tank 9, a connecting column 10, an upper sealing tank 11, an upper supporting pipe 12 and a plurality of groups of stirring pipes 13, a fixing through hole is formed in the middle of the bottom end of the coal storage tank 4, a lower mounting through hole is formed in the bottom end of the lower sealing tank 9, a lower ball bearing 14 is fixedly mounted in the lower mounting through hole, the top end of the lower supporting pipe 8 penetrates through the lower fixing through hole from the bottom end of the coal storage tank 4 and extends into the placing cavity, penetrates through the lower ball bearing 14 and extends into the lower sealing tank 9, the lower supporting pipe 8 is fixedly connected with the coal storage tank 4, an upper mounting through hole is formed in the middle of the top end of the coal storage tank, the bottom end of the upper supporting pipe 12 penetrates through the upper ball bearing 15 from the top end of the coal storage box 4 to extend into the placing cavity and communicate with the top middle part of the upper sealing box 11, a driven gear 16 is fixedly mounted on the outer side of the upper supporting pipe 12, a rotating motor 31 is mounted on the top end of the coal storage box, a rotating shaft 17 is arranged at the bottom output end of the rotating motor 31, the bottom end of the rotating shaft 17 extends into the placing cavity from the top end of the coal storage box 4, a driving gear 18 is mounted at the bottom end of the rotating shaft 17, the driving gear 18 is meshed with the driven gear 16, the multiple groups of stirring pipes 13 are of a frame structure, the top ends of the multiple groups of stirring pipes 13 are communicated with the outer side of the upper sealing box 11, the bottom ends of the multiple groups of stirring pipes 13 are communicated with the outer side of the lower sealing box 9, the multiple groups of stirring pipes 13 are uniformly mounted between the upper sealing box 11 and the lower, the outer sides of the multiple groups of stirring pipes 13 are provided with multiple groups of inclined shoveling plates 30, the multiple groups of inclined shoveling plates 30 can shovel and stir coal dust in the coal storage box 4 when rotating, the stirring effect on the coal dust is improved, the bottom end of the lower seal box 9 is contacted with the inner bottom wall of the placing cavity, the output end of the smoke exhaust pipe 3 is communicated with the bottom end of the lower support pipe 8, the top end of the coal storage box 4 is provided with a coal feeding port 19, the right end of the coal conveying channel 6 is communicated with the bottom end of the left end of the coal storage box 4, the left end of the coal conveying channel 6 is communicated with the top end of the right end of the crushing box 5, a conveying auger 20 is arranged in the coal conveying channel 6, high-temperature flue gas discharged from the smoke exhaust pipe 3 enters the lower seal box 9 through the lower support pipe 8, then enters the upper seal box 11 through the multiple groups of stirring pipes 13 and is discharged from the upper support pipe 12, and the heat of the high-, the coal dust is preheated, the driving gear 18 is driven to rotate through the rotating motor, the driven gear 16, the upper supporting pipe 12, the connecting shaft and the multiple groups of stirring pipes 13 are driven to slowly rotate by the driving gear 18, the preheating effect of the coal dust is improved, the coal dust is stirred while being heated, and heat in the discharged smoke can be partially recovered, so that the practicability is improved; the inside of smashing case 5 is provided with the working chamber to be provided with crushing motor 21 on the top of smashing case 5, the bottom output of smashing motor 21 is provided with transmission shaft 22, the bottom of transmission shaft 22 stretches into the working chamber from the top of smashing case 5, and be provided with on transmission shaft 22 and carry out kibbling reducing mechanism to the buggy, reducing mechanism includes sleeve pipe 24, circular sieve 25 and two sets of crushing compression roller 26, circular sieve 25 transversely installs in the bottom of working chamber, the sleeve pipe 24 cover is located the outside of transmission shaft 22 to be provided with a plurality of spacing grooves 27 on the inside wall of sleeve pipe 24, the outside of transmission shaft 22 is provided with a plurality of spacing slider 28, a plurality of spacing slider 28 slide respectively and set up in a plurality of spacing grooves 27, multiunit crushing blade 29 is installed in the outside of sleeve pipe 24, two sets of crushing compression roller 26 are rotatable the outside bottom of sleeve pipe 24 respectively, the two groups of crushing compression rollers 26 are oppositely arranged, the bottom ends of the two groups of crushing compression rollers 26 are tightly attached to the top end of the circular sieve plate 25, the bottom end of the crushing box 5 is communicated with a discharging pipe 23, the output end of the discharging pipe 23 is communicated with a coal inlet of the combustion box 2, the air blower 7 is arranged on the discharging pipe 23, the output end of the air blower 7 is opposite to the coal inlet of the combustion box 2, the pulverized coal in the coal storage box 4 is conveyed into the crushing box 5 through the coal conveying channel 6, the transmission shaft 22 and the crushing device are driven to rotate through the crushing motor 21, so that the pulverized coal entering the crushing box 5 is crushed and refined, the refined pulverized coal is guided into the discharging pipe 23 and is blown into the combustion box 2 to be combusted under the driving of the air blower 7, so that the combustion efficiency of the pulverized coal is improved, the pulverized coal in the crushing box 5 can be crushed and stirred through the crushing blades 29, the pulverized coal on the circular sieve plate 25 can be rolled by the crushing roller 26, the pulverized coal is further crushed and refined, and the crushed pulverized coal passes through the circular sieve plate 25 and falls into the discharging pipe 23.

Go up seal box 11, lower seal box 9, spliced pole 10 and multiunit stirred tube 13 and be welded fastening, improve agitating unit's fastness.

When the coal dust preheating device is used, high-temperature flue gas discharged by the smoke discharge pipe 3 enters the lower seal box 9 through the lower support pipe 8, then enters the upper seal box 11 through the multiple groups of stirring pipes 13 and is discharged from the upper support pipe 12, the heat of the high-temperature flue gas is transferred to coal dust in the coal storage box 4 to preheat the coal dust, the driving gear 18 is driven to rotate through the rotating motor, the driving gear 18 drives the driven gear 16 and the upper support pipe 12, the connecting shaft and the multiple groups of stirring pipes 13 to slowly rotate, the preheating effect of the coal dust is improved, stirring is carried out while heating, and the heat in the discharged flue gas can be partially recovered, so that the practicability is improved; pulverized coal in the coal storage box 4 is conveyed into the crushing box 5 through the coal conveying channel 6, the transmission shaft 22 and the crushing device are driven to rotate through the crushing motor 21, accordingly, pulverized coal entering the crushing box 5 is crushed and refined, the refined pulverized coal is guided into the blanking pipe 23 and is blown into the combustion box 2 to be combusted under the driving of the air blower 7, and accordingly the combustion efficiency of the pulverized coal is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An environment-friendly energy-saving supercritical boiler comprises a boiler body (1), wherein a combustion box (2) is arranged on the boiler body (1), and a smoke exhaust pipe (3) is arranged at the top end of the combustion box (2); the coal storage device is characterized by further comprising a coal storage box (4), a crushing box (5), a coal conveying channel (6) and an air blower (7), wherein a placing cavity is formed in the coal storage box (4), a stirring device is arranged in the placing cavity and comprises a lower supporting pipe (8), a lower sealing box (9), a connecting column (10), an upper sealing box (11), an upper supporting pipe (12) and a plurality of groups of stirring pipes (13), a fixing through hole is formed in the middle of the bottom end of the coal storage box (4), a lower mounting through hole is formed in the bottom end of the lower sealing box (9), a lower ball bearing (14) is fixedly mounted in the lower mounting through hole, the top end of the lower supporting pipe (8) penetrates through the lower fixing through hole from the bottom end of the coal storage box (4) and extends into the placing cavity, penetrates through the lower ball bearing (14) and extends into the lower sealing box (9), and the lower supporting pipe (8) is fixedly connected with the coal storage box (4), an upper mounting through hole is formed in the middle of the top end of the coal storage box (4), an upper ball bearing (15) is fixedly mounted in the upper mounting through hole, the bottom end of an upper supporting pipe (12) penetrates through the upper ball bearing (15) from the top end of the coal storage box (4) to extend into the placing cavity and is communicated with the middle of the top end of the upper sealing box (11), a driven gear (16) is fixedly mounted on the outer side of the upper supporting pipe (12), a rotating motor (31) is mounted at the top end of the coal storage box, a rotating shaft (17) is arranged at the bottom output end of the rotating motor (31), the bottom end of the rotating shaft (17) extends into the placing cavity from the top end of the coal storage box (4), a driving gear (18) is mounted at the bottom end of the rotating shaft (17), the driving gear (18) is meshed with the driven gear (16), the multiple groups of stirring pipes (13) are of a frame-shaped structure, and the top ends of the multiple groups of the, the bottom of a plurality of groups of stirring pipes (13) is communicated with the outer side of a lower sealing box (9), the output end of a smoke exhaust pipe (3) is communicated with the bottom end of a lower supporting pipe (8), a coal feeding port (19) is arranged at the top end of a coal storage box (4), the right end of a coal conveying channel (6) is communicated with the bottom of the left end of the coal storage box (4), the left end of the coal conveying channel (6) is communicated with the top of the right end of a crushing box (5), a conveying flood dragon (20) is arranged in the coal conveying channel (6), a working cavity is arranged inside the crushing box (5), a crushing motor (21) is arranged at the top end of the crushing box (5), a transmission shaft (22) is arranged at the bottom output end of the crushing motor (21), the bottom end of the transmission shaft (22) extends into the working cavity from the top end of the crushing box (5), and a crushing device for crushing coal powder is arranged on the transmission shaft (22), the bottom end of the crushing box (5) is communicated with a discharging pipe (23), the output end of the discharging pipe (23) is communicated with the coal inlet of the combustion box (2), the air blower (7) is installed on the discharging pipe (23), and the output end of the air blower (7) is over against the coal inlet of the combustion box (2).

2. The environmentally friendly and energy saving supercritical boiler according to claim 1, the crushing device comprises a sleeve (24), a circular sieve plate (25) and two groups of crushing press rollers (26), the circular sieve plate (25) is transversely arranged at the bottom of the working cavity, the sleeve (24) is sleeved outside the transmission shaft (22), a plurality of limiting grooves (27) are arranged on the inner side wall of the sleeve (24), a plurality of limiting sliding blocks (28) are arranged on the outer side of the transmission shaft (22), the limit slide blocks (28) are respectively arranged in the limit grooves (27) in a sliding way, a plurality of groups of crushing blades (29) are arranged on the outer side of the sleeve (24), the two groups of crushing press rollers (26) are respectively and rotatably arranged at the bottom of the outer side of the sleeve (24), and two sets of crushing compression rollers (26) are arranged oppositely, and the bottom ends of the two sets of crushing compression rollers (26) are tightly attached to the top end of the circular sieve plate (25).

3. An environmentally friendly energy-saving supercritical boiler according to claim 2, characterized in that the multiple groups of stirring pipes (13) are uniformly installed between the upper seal box (11) and the lower seal box (9) at equal angles.

4. An environmentally friendly and energy saving supercritical boiler according to claim 3, characterized in that the outer sides of the multiple groups of stirring pipes (13) are provided with multiple groups of obliquely arranged shoveling plates (30).

5. An environmentally friendly energy-saving supercritical boiler according to claim 4, characterized in that the bottom end of the lower seal box (9) is in contact with the inner bottom wall of the placing chamber.

6. The environmentally friendly and energy saving supercritical boiler according to claim 5, wherein the upper seal box (11), the lower seal box (9), the connecting column (10) and the plurality of groups of stirring pipes (13) are all welded and fixed.