CN211399740U

CN211399740U - Three-return-stroke low-nitrogen condensation steam boiler

Info

Publication number: CN211399740U
Application number: CN202020046462.8U
Authority: CN
Inventors: 索化宁; 程何康; 杨东海; 冯威; 田志坚; 马宗光; 冯培亮; 李鹏志; 张怀彬; 张广华
Original assignee: Henan Zhixin Boiler Technology Innovation Co ltd
Current assignee: Henan Zhixin Boiler Technology Innovation Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-09-01
Anticipated expiration: 2030-01-10

Abstract

The utility model relates to the technical field of boilers, in particular to a three-return low-nitrogen condensation steam boiler, which comprises a boiler, wherein a water storage cavity and a combustion cavity are arranged in the boiler, a smoke exhaust box is arranged at the top of the combustion cavity, a plurality of smoke exhaust pipes are arranged on one side of the smoke exhaust box, a preheating box is arranged on the outer wall of the boiler, a condensing box and a smoke exhaust column are arranged at the top of the boiler, a condenser is arranged in the condensing box, and a water tank is arranged at the top of the condensing box; smoke enters the smoke exhaust box and enters the preheating box through the smoke exhaust pipe, and the smoke preheats air before entering the boiler to a heating surface with a certain temperature through the internal radiating fins, so that the heat exchange performance of the boiler is improved, and the energy consumption is reduced; then, smoke in the preheating tank enters the condensing tank through the first pipe to heat the condenser, water in the water tank is heated, the water inlet temperature of the boiler is indirectly increased, the purpose that the same steam is discharged by fuel in shorter time and less time is achieved, and therefore fuel consumption is saved.

Description

Three-return-stroke low-nitrogen condensation steam boiler

Technical Field

The utility model relates to a boiler technical field specifically is a three return stroke low nitrogen condensation steam boilers.

Background

The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, the boiler outputs steam, high-temperature water or organic heat carrier with certain heat energy, and the boiler is divided into a boiler part and a furnace part. The boiler is a pressure-receiving component for containing water and steam, heating, vaporizing and separating water from steam, and the furnace is a place for burning fuel or releasing heat by other heat energy, and comprises combustion equipment, a combustion chamber, a heat-releasing flue and the like. The boiler and the furnace are subjected to a heat conversion process, and the interface of heat release and heat absorption is called a heating surface. The boiler heats the water to steam. In view of the fact that the conventional boiler has high fuel consumption and cannot save fuel, the combusted smoke is directly discharged to the outside, and the combusted smoke has a large amount of heat energy and cannot directly obtain the heat energy for continuous utilization, so that the fuel consumption is saved, a three-pass low-nitrogen condensation steam boiler is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three return strokes low nitrogen condensation steam boiler to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a three-return low-nitrogen condensation steam boiler comprises a boiler, wherein a water storage cavity and a combustion cavity are formed in the boiler, and the combustion cavity is located in the water storage cavity; a smoke exhaust box is arranged at the top of the combustion cavity, a plurality of smoke exhaust pipes are arranged on one side of the smoke exhaust box, a preheating box is arranged on the outer wall of the boiler, and one ends of the smoke exhaust pipes penetrate through the outer walls of the boiler and the preheating box and extend into the preheating box; the top of the boiler is provided with a condensing box and a smoke exhaust column, the condensing box is communicated with the preheating box through a first pipe, and the smoke exhaust column is communicated with the condensing box through a second pipe; the improved boiler is characterized in that a condenser is arranged in the condensing box, a water tank is arranged at the top of the condensing box, two ends of the condenser extend out of the condensing box and are communicated with the water tank, the water tank is communicated with the water storage cavity through a water pipe, a water pump is arranged on one side of the boiler, and the water pump is communicated with the water tank through a connecting pipe.

Preferably, the smoke exhaust box is communicated with the combustion cavity and the smoke exhaust pipe, and the outer walls of the smoke exhaust box and the combustion cavity are of an integrally formed structure.

Preferably, two ends of the smoke exhaust pipe are respectively and tightly welded with the smoke exhaust box and the preheating box, and the preheating box is tightly welded with the boiler.

Preferably, the first pipe, the condensing box, the second pipe and the smoke exhaust column are communicated, two ends of the first pipe are respectively and tightly welded with the preheating box and the condensing box, and two ends of the second pipe are respectively and tightly welded with the condensing box and the smoke exhaust column.

Preferably, the both ends of water pipe are boiler and water tank welded closely respectively, the upper end of water pipe is close to the bottom of water tank, the one end and the water tank of connecting pipe welded closely, the other end and the water pump threaded connection of connecting pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model is provided with a smoke exhaust box, a smoke exhaust pipe, a preheating box, a first pipe, a condensing box and a condenser; smoke with heat energy after combustion in the combustion chamber is collected by the smoke exhaust box and enters the preheating box through the smoke exhaust pipe, so that the smoke in the preheating box preheats air before entering the boiler to a heating surface with a certain temperature through the internal radiating fins, the heat exchange performance of the boiler is improved, and the energy consumption is reduced; subsequently, the smoke in the preheating tank enters the condenser tank through the first pipe, the condenser is heated, and then the water in the condenser heating water tank is cooled, so that the water inlet temperature of the boiler is indirectly increased, the steam outlet time of the boiler is shortened, the purpose that the fuel with shorter time and less time is discharged the same steam is realized, a large amount of heat energy in the smoke after combustion can be obtained and continuously utilized, and the consumption of the fuel is saved.

Drawings

Fig. 1 is one of the overall structural diagrams of the present invention;

FIG. 2 is a second schematic view of the overall structure of the present invention;

fig. 3 is a schematic structural diagram of the interior of the boiler of the present invention.

In the figure: a boiler 1; a water storage cavity 11; a combustion chamber 12; a smoke exhaust box 2; a smoke exhaust pipe 3; a preheating box 4; a first pipe 41; a condenser tank 5; a condenser 51; a smoke discharging column 6; a second tube 61; a water tank 7; a water pipe 71; a water pump 8; and a connection pipe 81.

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.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-3, the present invention provides a technical solution:

a three-return low-nitrogen condensation steam boiler comprises a boiler 1, wherein a water storage cavity 11 and a combustion cavity 12 are formed in the boiler 1, and the combustion cavity 12 is positioned in the water storage cavity 11; a smoke exhaust box 2 is arranged at the top of the combustion chamber 12, a plurality of smoke exhaust pipes 3 are arranged on one side of the smoke exhaust box 2, a preheating box 4 is arranged on the outer wall of the boiler 1, and one ends of the smoke exhaust pipes 3 penetrate through the outer walls of the boiler 1 and the preheating box 4 and extend into the preheating box 4; the top of the boiler 1 is provided with a condensing box 5 and a smoke exhaust column 6, the condensing box 5 is communicated with the preheating box 4 through a first pipe 41, and the smoke exhaust column 6 is communicated with the condensing box 5 through a second pipe 61; be equipped with condenser 51 in the condensing tank 5, the top of condensing tank 5 is equipped with water tank 7, and condenser 51's both ends stretch out condensing tank 5 and are linked together with water tank 7, and water tank 7 leads to pipe 71 and is linked together with water storage chamber 11, and one side of boiler 1 is equipped with water pump 8, and water pump 8 is linked together with water tank 7 through connecting pipe 81.

Specifically, the smoke exhaust box 2 is communicated with the combustion cavity 12 and the smoke exhaust pipe 3, the smoke exhaust box 2 and the outer wall of the combustion cavity 12 are of an integrally formed structure, stability of the structure is guaranteed, high-temperature smoke generated after the combustion cavity 12 burns can be gathered in the smoke exhaust box 2, and the smoke can enter the preheating box 4 through the smoke exhaust pipe 3.

Further, the two ends of the smoke exhaust pipe 3 are respectively and tightly welded with the smoke exhaust box 2 and the preheating box 4, the preheating box 4 is tightly welded with the boiler 1, the stability of the whole structure is guaranteed, smoke is prevented from being leaked in the smoke exhaust process, a large amount of heat energy in the smoke cannot be collected, the consumption of fuel cannot be fully saved, and the smoke is prevented from entering the water storage cavity 11 to cause the damage of the boiler 1.

Specifically, first pipe 41, condensing box 5, second pipe 61 is linked together with post 6 of discharging fume, guarantee the circulation that the cigarette can be free, the both ends of first pipe 41 respectively with preheating cabinet 4 and condensing box 5 closely weld, the both ends of second pipe 61 respectively with condensing box 5 and the post 6 of discharging fume closely weld, guarantee overall structure's stability, when the cigarette that has the heat energy gets into condensing box 5, can heat condenser 51, and condenser 51 forms water circulation to the hydroenergy in the water tank 7, the water after condenser 51 heats can be discharged into water tank 7, and the water in the water tank 7 can get into water storage chamber 11 through water pipe 71, water wherein has certain temperature, can indirectly improve boiler intake temperature, shorten boiler steam time, a large amount of heat energy in the cigarette after the burning, can acquire and continuously utilize, with this consumption of practicing thrift the fuel.

Further, both ends of water pipe 71 are boiler 1 and water tank 7 respectively and closely weld, guarantee the stability of structure, the upper end of water pipe 71 is close to the bottom of water tank 7, make hydroenergy natural get into in the water pipe 71 get into the water storage chamber 11 again, the one end of connecting pipe 81 and water tank 7 closely weld, the other end and the water pump 8 threaded connection of connecting pipe 81, guarantee the stability of structure, water pump 8 can be with in external water transport intake box 7, make hydroenergy in the water tank 7 obtain the improvement of condenser 51 heat energy, make the temperature uprise.

It should be noted that, a fuel machine is disposed at one end of the combustion chamber 12, the fuel machine adds fuel into the combustion chamber 12, and the fuel machine is connected to a blower through an air pipe, and the blower adds air into the fuel machine and the combustion chamber 12, so that the flame inside the combustion chamber is more vigorous.

It is worth noting that the water pump 8 related to the utility model adopts the water pump with model number of ISW50-160 produced by Zhejiang Teyi pump valve Limited company, and the matching circuit and power supply can be provided by the manufacturer; furthermore, the water pump 8 that the present invention relates to is prior art, and the skilled person in the art can realize completely, and it is needless to say that the present invention protects the content that does not relate to the structure and the working principle improvement of the water pump 8 either.

It should be noted that the condenser 51 of the present invention is a water pump of AN25L1 model manufactured by Jiangsu Changsheng sealing material Co., Ltd, and the matching circuit and power supply can be provided by the manufacturer; furthermore, the condenser 51 of the present invention is prior art, and can be implemented by those skilled in the art, without the need for extra details, and the present invention also does not relate to the improvement of the structure and working principle of the condenser 51.

When the three-return-stroke low-nitrogen condensation steam boiler is used, a fuel machine, an air blower, a condenser 51 and a water pump 8 are connected with a power supply and started to work, the fuel machine adds fuel into a combustion chamber 12 and burns, the air blower adds air into the fuel machine and the combustion chamber 12 to enable internal flame to be more vigorous, the water pump 8 conveys water into a water tank 7 through a connecting pipe 81, the condenser 51 circularly changes the water in the water tank 7, and meanwhile, the water in the water tank 7 enters a water storage chamber 11 through a water pipe 71 to be added with water; smoke generated after fuel in the combustion chamber 12 is combusted is gathered in the smoke exhaust box 2, the air pressure in the combustion chamber 12 is increased under the action of the air blower, the smoke in the smoke exhaust box 2 enters the preheating box 4 through the smoke exhaust pipe 3, and the smoke in the preheating box 4 preheats air before entering the boiler to a heating surface with a certain temperature through internal radiating fins, so that the heat exchange performance of the boiler is improved, and the energy consumption is reduced; then, the flue gas enters the condensation tank 5 through the first pipe 41, the high-temperature flue gas heats the condenser 51, the condenser 51 can absorb heat energy, the condenser 51 can circulate water in the water tank 7, so that the temperature of the water in the heating water tank 7 is increased, the water tank 7 enters the water storage cavity 11 through the water pipe 71, the water inlet temperature of the water storage cavity 11 is indirectly increased, a large amount of heat energy in the burned flue gas can be obtained and continuously utilized, and the consumption of fuel is saved; after the condenser 51 absorbs the heat energy in the flue gas, the flue gas enters the smoke discharging column 6 through the second pipe 61 and is discharged to the outside.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a three return stroke low nitrogen condensation steam boilers, includes boiler (1), its characterized in that: a water storage cavity (11) and a combustion cavity (12) are formed in the boiler (1), and the combustion cavity (12) is located in the water storage cavity (11); a smoke exhaust box (2) is arranged at the top of the combustion cavity (12), a plurality of smoke exhaust pipes (3) are arranged on one side of the smoke exhaust box (2), a preheating box (4) is arranged on the outer wall of the boiler (1), and one ends of the smoke exhaust pipes (3) penetrate through the outer walls of the boiler (1) and the preheating box (4) and extend into the preheating box (4); the top of the boiler (1) is provided with a condensing box (5) and a smoke exhaust column (6), the condensing box (5) is communicated with the preheating box (4) through a first pipe (41), and the smoke exhaust column (6) is communicated with the condensing box (5) through a second pipe (61); be equipped with condenser (51) in condenser box (5), the top of condenser box (5) is equipped with water tank (7), the both ends of condenser (51) stretch out condenser box (5) and are linked together with water tank (7), water tank (7) lead to pipe (71) with water storage chamber (11) are linked together, one side of boiler (1) is equipped with water pump (8), water pump (8) are linked together through connecting pipe (81) and water tank (7).

2. A three-pass low-nitrogen condensing steam boiler according to claim 1, characterized in that: the smoke exhaust box (2) is communicated with the combustion cavity (12) and the smoke exhaust pipe (3), and the outer walls of the smoke exhaust box (2) and the combustion cavity (12) are of an integrally formed structure.

3. A three-pass low-nitrogen condensing steam boiler according to claim 1, characterized in that: two ends of the smoke exhaust pipe (3) are respectively and tightly welded with the smoke exhaust box (2) and the preheating box (4), and the preheating box (4) is tightly welded with the boiler (1).

4. A three-pass low-nitrogen condensing steam boiler according to claim 1, characterized in that: the first pipe (41), the condensation box (5), the second pipe (61) and the smoke exhaust column (6) are communicated, two ends of the first pipe (41) are respectively and tightly welded with the preheating box (4) and the condensation box (5), and two ends of the second pipe (61) are respectively and tightly welded with the condensation box (5) and the smoke exhaust column (6).

5. A three-pass low-nitrogen condensing steam boiler according to claim 1, characterized in that: the both ends of water pipe (71) closely weld with boiler (1) and water tank (7) respectively, the upper end of water pipe (71) is close to the bottom of water tank (7), the one end and the inseparable welding of water tank (7) of connecting pipe (81), the other end and water pump (8) threaded connection of connecting pipe (81).