CN219389671U - CNB type fuel oil and gas angle pipe type steam boiler - Google Patents

Abstract

The utility model relates to the technical field of steam boilers, and discloses a CNB type fuel oil and gas corner tube type steam boiler, which comprises a boiler system, a hearth, a flue gas channel hot surface and a tail flue hot surface, wherein the boiler system consists of a boiler barrel, a front wall, a rear wall, a left side wall, a middle wall, a right side wall, a superheater, a first evaporator, a second evaporator, a third evaporator, a downcomer, an eduction tube, a support tube, an energy saver, a condenser and a flue interface; the integral fuel oil and gas corner tube type steam boiler has compact structure, does not need a steel frame supported or suspended CNB boiler product, has low manufacturing cost, ensures that the smoke flows in an N shape, has micro positive pressure combustion, has good energy-saving and environment-friendly performances, can replace part of the traditional boiler type, and has simple and reliable boiler water circulation loop; the boiler wall is a light heat-insulating wall, the whole boiler is horizontally arranged, and the boiler room adopts a single-layer arrangement design, so that the installation space of equipment can be saved.

Description

CNB type fuel oil and gas angle pipe type steam boiler

Technical Field

The utility model relates to the technical field of steam boilers, in particular to a CNB type fuel oil and gas corner tube type steam boiler.

Background

Steam boilers are important devices in industrial production, and their combustion efficiency and heat output are the most important properties. Combustion efficiency and heat utilization efficiency affect fuel utilization and cost.

In the prior art, energy sources have been an important material basis for survival and development of human society. Energy conservation and emission reduction become common tasks of the whole society, the existing steam boiler is loose in structural arrangement in the actual use process, the use space can be greatly influenced, and a plurality of groups of steel frames are required to be matched for supporting and use, so that the manufacturing cost is high; in view of this, we propose a CNB type fuel-gas corner tube steam boiler.

Disclosure of Invention

The utility model aims to provide a CNB type fuel oil and gas corner tube type steam boiler so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a CNB type fuel oil and gas corner tube type steam boiler comprises a boiler system, a hearth, a flue gas channel hot surface and a tail flue hot surface, wherein the boiler system consists of a boiler barrel, a front wall, a rear wall, a left side wall, a middle wall, a right side wall, a superheater, a first evaporator, a second evaporator, a third evaporator, a descending tube, an eduction tube, a supporting tube, an energy-saving device, a condenser and a flue interface;

the hearth consists of a front wall, a rear wall, a left side wall and a middle wall, wherein the front wall and the rear wall are arranged oppositely, the middle wall is positioned in the middle of the front wall and the rear wall, and the left side wall is obliquely arranged;

the flue gas channel hot surface consists of a middle wall, a right side wall, a superheater, an evaporator I, an evaporator II and an evaporator III, and the superheater, the evaporator I, the evaporator II and the evaporator III are sequentially distributed in the flue gas channel hot surface;

the tail flue hot surface consists of a flue interface, an energy saver and a condenser, and the flue interface, the energy saver and the condenser are distributed in sequence;

the superheater, the first evaporator, the second evaporator, the third evaporator, the energy-saving device and the condenser are all transversely flushed by flue gas, and the heat exchange efficiency is optimal.

Optionally, the boiler barrel, the front wall, the rear wall, the left side wall, the middle wall, the right side wall, the superheater, the evaporator I, the evaporator II, the evaporator III, the downcomer, the eduction tube and the support tube are welded into a whole frame, and the boiler structure is formed into a boiler B form of an angle tube type C arrangement.

Optionally, the flue gas flow formed by the front wall, the rear wall, the left side wall, the middle wall, the right side wall, the superheater, the evaporator I, the evaporator II, the evaporator III, the energy saver, the condenser and the flue interface is a plane N.

Optionally, the superheater is a module combination type, the module combination type comprises single-stage, double-stage and three-stage arrangement, and the first evaporator, the second evaporator and the third evaporator are one or more of light pipes or expansion heating surfaces.

Optionally, an SCR environmental protection equipment interface is reserved between the flue interface and the energy economizer, and an FGR flue is built in between the energy economizer and the condenser and an interface is reserved.

Compared with the prior art, the utility model provides a CNB type fuel oil and gas angle tube type steam boiler, which has the following beneficial effects:

1. the CNB type fuel oil and gas angle tube type steam boiler has compact structure, does not need a steel frame to support or suspend a CNB boiler product, has low manufacturing cost, ensures that the flue gas flows in an N shape, has micro positive pressure combustion, has good energy-saving and environment-friendly performances, can replace part of the traditional boiler type, and has simple and reliable boiler water circulation loop; the boiler wall is a light heat-insulating wall, the whole boiler is horizontally arranged, and the boiler room adopts a single-layer arrangement design, so that the installation space of equipment can be saved.

2. The flue gas flow formed by the front wall, the rear wall, the left side wall, the middle wall, the right side wall, the superheater, the evaporator I, the evaporator II, the evaporator III, the energy-saving device, the condenser and the flue interface is a plane N-shaped flue gas flow, and the superheater, the evaporator I, the evaporator II, the evaporator III, the energy-saving device and the condenser are all flue gas transverse flushing, so that the heat exchange efficiency is optimal.

Drawings

FIG. 1 is a schematic diagram of the front view of the device of the present utility model;

FIG. 2 is a schematic side view of the apparatus of the present utility model;

fig. 3 is a schematic top view of the device of the present utility model.

In the figure: 1. a drum; 2. a front wall; 3. a rear wall; 4. a left side wall; 5. a middle wall; 6. a right side wall; 7. a superheater; 8. an evaporator I; 9. an evaporator II; 10. an evaporator III; 11. a down pipe; 12. an eduction tube; 13. a support tube; 14. an energy-saving device; 15. a condenser; 16. and a flue interface.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-3, the present utility model provides a technical solution: the CNB type fuel-gas corner tube type steam boiler comprises a boiler system, a hearth, a flue gas channel hot surface and a tail flue hot surface, wherein the boiler system consists of a boiler barrel 1, a front wall 2, a rear wall 3, a left side wall 4, a middle wall 5, a right side wall 6, a superheater 7, a first evaporator 8, a second evaporator 9, a third evaporator 10, a descending tube 11, an eduction tube 12, a support tube 13, an energy saver 14, a condenser 15 and a flue interface 16, the integral fuel-gas corner tube type steam boiler has a compact structure, does not need a steel frame supported or suspended CNB boiler product, has low manufacturing cost, ensures that flue gas flows in an 'N' way, has micro-positive pressure combustion, has good energy saving and environment protection performances, can replace part of traditional boiler types, and has a boiler water circulation loop which is simple and reliable; the boiler wall is a light heat-insulating boiler wall, the whole boiler is horizontally arranged, a boiler room is designed in a single-layer arrangement mode, and the installation space of equipment can be saved, wherein the whole boiler is only supported by a supporting pipe 13, the boiler barrel 1 is a single boiler barrel, the four corners of the boiler are provided with the corner tube type boiler self-supporting structure of a down tube 11, the down tube 11 is connected through corners to form a boiler body framework, a membrane type wall structure is adopted for a hearth and front and rear side walls, the membrane type wall structure is hooked with a body, the boiler body is welded into a frame type whole, and a steel frame is not needed for the boiler body; the expansion center of the boiler is set as the position of the down tube 11 at the front end of the boiler barrel 1, and the boiler expands upwards, backwards and rightwards.

The hearth consists of a front wall 2, a rear wall 3, a left side wall 4 and a middle wall 5, wherein the front wall 2 and the rear wall 3 are arranged opposite to each other, the middle wall 5 is positioned in the middle of the front wall 2 and the rear wall 3, and the left side wall 4 is obliquely arranged;

the flue gas channel hot surface consists of a middle wall 5, a right side wall 6, a superheater 7, an evaporator I8, an evaporator II 9 and an evaporator III 10, and the superheater 7, the evaporator I8, the evaporator II 9 and the evaporator III 10 are sequentially distributed in the flue gas channel hot surface;

the tail flue hot surface consists of a flue interface 16, an energy economizer 14 and a condenser 15, and the flue interface 16, the energy economizer 14 and the condenser 15 are distributed in sequence;

the flue gas channel hot surface and the tail flue hot surface form a flue gas mechanism, after the boiler carries out mixed combustion of natural gas and air through a burner, high-temperature flame and flue gas are generated in a hearth formed by a front wall 2, a rear wall 3, a left side wall 4 and a middle wall 5, the high-temperature flue gas enters a flue formed by the middle wall 5 and a right side wall 6, and leaves the boiler body after exchanging heat with a superheater 7, a first evaporator 8, a second evaporator 9 and a third evaporator 10, the low-temperature flue gas flows through the tail flue hot surface again, and finally is discharged into the atmosphere through a chimney, and the exhaust temperature is 70-140 ℃.

The boiler adopts water natural circulation, soft water is pressurized by a water supply pump and then enters a boiler tail energy economizer 14, then enters a boiler barrel 1, boiler water is distributed into a front wall 2, a rear wall 3, a left side wall 4, a middle wall 5, a right side wall 6, a first evaporator 8, a second evaporator 9 and a third evaporator 10 through a descending pipe 11, a steam-water mixture enters the boiler barrel 1 through an eduction pipe 12, saturated steam generated after wet steam is separated enters a superheater 7, superheated steam meeting the technological requirements is generated, and the superheated steam is sent to steam using equipment.

In this embodiment, the boiler drum 1, the front wall 2, the rear wall 3, the left side wall 4, the middle wall 5, the right side wall 6, the superheater 7, the evaporator one 8, the evaporator two 9, the evaporator three 10, the downcomer 11, the eduction tube 12 and the support tube 13 are welded into a whole frame, and form a boiler B with a boiler structure of an angle tube type C arrangement. The flue gas flow formed by the front wall 2, the rear wall 3, the left side wall 4, the middle wall 5, the right side wall 6, the superheater 7, the evaporator I8, the evaporator II 9, the evaporator III 10, the energy-saving device 14, the condenser 15 and the flue interface 16 is a plane 'N', and the superheater 7, the evaporator I8, the evaporator II 9, the evaporator III 10, the energy-saving device 14 and the condenser 15 are all transversely flushed with flue gas, so that the heat exchange efficiency is optimal.

The superheater 7, the first evaporator 8, the second evaporator 9 and the third evaporator 10 are arranged, the superheater 7 is in a modular combination type, can be arranged in a single stage, a double stage and a three stage mode, and has the advantages of small field installation workload and short period when the boiler is assembled and delivered from a factory; the first evaporator 8, the second evaporator 9 and the third evaporator 10 are one or more of light pipes or expansion heating surfaces. An SCR environment-friendly equipment interface is reserved between the flue interface 16 and the energy saver 14, and an FGR flue is arranged between the energy saver 14 and the condenser 15 and an interface is reserved.

The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims (5)

1. The utility model provides a CNB type fuel oil gas angle pipe formula steam boiler which characterized in that: the boiler comprises a boiler system, a hearth, a flue gas channel hot surface and a tail flue hot surface, wherein the boiler system consists of a boiler barrel (1), a front wall (2), a rear wall (3), a left side wall (4), a middle wall (5), a right side wall (6), a superheater (7), a first evaporator (8), a second evaporator (9), a third evaporator (10), a descending pipe (11), an eduction pipe (12), a supporting pipe (13), an energy saver (14), a condenser (15) and a flue interface (16);

the hearth consists of a front wall (2), a rear wall (3), a left side wall (4) and a middle wall (5), wherein the front wall (2) and the rear wall (3) are arranged oppositely, the middle wall (5) is positioned in the middle of the front wall (2) and the rear wall (3), and the left side wall (4) is obliquely arranged;

the flue gas channel hot surface consists of a middle wall (5), a right side wall (6), a superheater (7), a first evaporator (8), a second evaporator (9) and a third evaporator (10), and the superheater (7), the first evaporator (8), the second evaporator (9) and the third evaporator (10) are sequentially distributed in the flue gas channel hot surface;

the tail flue hot surface consists of a flue interface (16), an energy saver (14) and a condenser (15), and the flue interface (16), the energy saver (14) and the condenser (15) are distributed in sequence;

the superheater (7), the evaporator I (8), the evaporator II (9), the evaporator III (10), the energy economizer (14) and the condenser (15) are all transversely flushed by flue gas.

2. A CNB-type fuel-gas angle tube steam boiler according to claim 1, wherein: the boiler barrel (1), the front wall (2), the rear wall (3), the left side wall (4), the middle wall (5), the right side wall (6), the superheater (7), the evaporator I (8), the evaporator II (9), the evaporator III (10), the downcomer (11), the eduction tube (12) and the support tube (13) are welded into a whole frame.

3. A CNB-type fuel-gas angle tube steam boiler according to claim 1, wherein: the flue gas flow formed by the front wall (2), the rear wall (3), the left side wall (4), the middle wall (5), the right side wall (6), the superheater (7), the evaporator I (8), the evaporator II (9), the evaporator III (10), the energy economizer (14), the condenser (15) and the flue interface (16) is a plane N.

4. A CNB-type fuel-gas angle tube steam boiler according to claim 1, wherein: the first evaporator (8), the second evaporator (9) and the third evaporator (10) are one or more of light pipes or expansion heating surfaces.

5. A CNB-type fuel-gas angle tube steam boiler according to claim 1, wherein: an SCR environment-friendly equipment interface is reserved between the flue interface (16) and the energy economizer (14), and an FGR flue is arranged between the energy economizer (14) and the condenser (15) in a built-in mode and an interface is reserved.