CN219510763U

CN219510763U - Vertical water pipe steam generator

Info

Publication number: CN219510763U
Application number: CN202320494957.0U
Authority: CN
Inventors: 管光斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-08-11
Anticipated expiration: 2033-03-15

Abstract

The utility model discloses a vertical water pipe steam generating device in the field of steam generating devices, wherein a flue gas heat exchange cavity is arranged above a combustion chamber in a furnace body, two layers of tubes are arranged in the flue gas heat exchange cavity in a concentric ring shape vertically, the lower end openings of the tubes are connected to a lower header in a ring shape, and the upper end openings of the tubes are connected to an upper header; adjacent tubes of the inner layer tube array and adjacent tubes of the outer layer tube array are connected by a flow separation plate, and a gap is reserved between the flow separation plate and the corresponding lower header or upper header to form a reciprocating baffling channel; and a flue gas channel is reserved between the outer layer tube array, the upper header and the periphery of the steam chamber and the inner wall of the furnace body, and the top of the flue gas channel is connected with a smoke outlet. The device has small water storage capacity, large steam production and high steam rising speed, and can be made into steam generators of fire coal, fuel oil, natural gas or biomass energy.

Description

Vertical water pipe steam generator

Technical Field

The utility model relates to a steam generating device, in particular to a steam generating device with vertically arranged water pipes.

Background

In the Chinese patent database, a combustion device is disclosed, the publication number of which is: CN204829879U; the publication date is: 201511202; the device comprises a furnace body provided with a combustion chamber, wherein the bottom of the combustion chamber is provided with a combustion tray, the lower side of the combustion tray is provided with a downwind cavity, a plurality of air inlets are arranged on the combustion tray to connect the downwind cavity with the combustion chamber, and a lower air inlet fan is arranged below the downwind cavity; the bottom of the furnace body is provided with a vertical feeding device, an inlet of the vertical feeding device is connected with an outlet of the horizontal feeding device, the inlet of the horizontal feeding device is provided with a feeding hopper, and the outlet of the vertical feeding device passes through the leeward cavity and the combustion tray to be communicated with the combustion chamber; the side wall of the combustion chamber is composed of an inner wall and an outer wall, a spiral water pipe is arranged outside the inner wall, an air inlet channel is reserved between the inner wall and the outer wall, and a plurality of air inlet nozzles are arranged on the inner wall; the furnace body is also provided with an ignition burner; a slag discharging gap is reserved on the periphery of the combustion tray, and a slag discharging device is communicated below the slag discharging gap. The device can burn the waste such as straw, residual oil, domestic garbage, and the like, and can efficiently supply hot flue gas. The device is in fact a steam generating device, which has the disadvantages that: the device furnace body is not compact enough, and the boiler volume of unit steam output is still great, and its root cause is that flue gas runner design is unreasonable enough, does not have the heat energy that can fully absorb the flue gas for the utilization efficiency of burning flue gas is not high enough.

Disclosure of Invention

The utility model aims to provide a vertical water pipe steam generating device, so that a flue gas flow channel is reasonable in design and high in flue gas utilization efficiency, and the technical effects of small volume and large steam rising amount are achieved.

The purpose of the utility model is realized in the following way: the vertical water pipe steam generating device comprises a vertically arranged furnace body, wherein a combustion chamber is arranged at the lower part of the furnace body, a flue gas heat exchange cavity is arranged above the combustion chamber in the furnace body, two layers of tubes are arranged in the flue gas heat exchange cavity in a concentric ring shape vertically, the lower end openings of the tubes are connected to a lower header in a ring shape, and the upper end openings of the tubes are connected to an upper header; adjacent tubes of the inner layer tube array are connected by a flow separation plate; the lower part of the flow isolation plate corresponding to the inner layer tube array is connected with the lower header in a sealing way, and a gap is reserved between the upper part of the flow isolation plate corresponding to the inner layer tube array and the upper header; a gap is reserved between the lower part of the flow isolation plate corresponding to the outer layer tube array and the lower header, and the upper part of the flow isolation plate corresponding to the outer layer tube array is connected with the upper header in a sealing way; the upper side of the upper header is connected with a circular steam chamber through a plurality of connecting pipes, the steam chamber is connected with a steam outlet, and the upper opening part of the steam chamber is provided with a smoke baffle plate; and a flue gas channel is reserved between the outer layer tube array, the upper header and the periphery of the steam chamber and the inner wall of the furnace body, and the top of the flue gas channel is connected with a smoke outlet.

When the utility model works, the lower header is filled with water, the water can be continuously supplied and supplemented through an external pipeline and a pump, high-temperature flue gas formed after fuel is combusted in the combustion chamber enters the flue gas heat exchange cavity, bypasses the upper part of the inner layer tube array, then turns back downwards, flows downwards from between the inner layer tube array and the outer layer tube array, bypasses the outer layer tube array, flows upwards, passes through the flue gas channel between the outer layer tube array, the upper header, the periphery of the steam chamber and the inner wall of the furnace body, and finally leaves from the exhaust port. Compared with the prior art, the utility model has the beneficial effects that: the flue gas flow channel is reasonable in design, and the flue gas heat exchange cavity is divided into the flow channels which are reciprocally turned back by the structural design of the inner layer of tube array, the outer layer of tube array and the flow separation plate, so that the tube array and the flue gas can exchange heat fully; because the space inside the steam chamber is connected with the flue gas heat exchange cavity, the superheated steam can absorb heat from the inner side and the outer side, and water carried in the steam is further vaporized, so that the steam quality is better; the water storage volumes of the lower header and the tube array of the device are smaller, the steam rising speed is high, and the gas production rate is high; the device can utilize coal, oil, natural gas or living beings as fuel and carry out steam preparation, can be applied to various places that need steam.

Furthermore, the outer walls of the adjacent connecting pipes are connected in a sealing way, so that a vortex heat exchange cavity with only an opening at the bottom is formed among the steam chamber, the connecting pipes and the upper header. The density of the flue gas burnt in the combustion chamber is smaller as the temperature of the flue gas is higher, so that the flue gas with the highest temperature can enter the vortex heat exchange cavity to exchange heat with steam in the steam chamber, water in the steam is vaporized, the quality of the steam is improved, the density of the flue gas is increased and reduced after the temperature of the flue gas is reduced, and then the flue gas passes through the inner layer tube array and the outer layer tube array, and the flue gas in the vortex heat exchange cavity is supplemented by new high-temperature flue gas, so that the flue gas with the high temperature inside is always ensured.

In order to further ensure the utilization of heat energy, a preheating water jacket is arranged on the outer side of the upper part of the furnace body. The preheating water jacket is arranged on the outer side, so that low-temperature waste heat in the flue gas can be recycled on one hand, and an energy-saving effect is achieved; on the other hand, the temperature of the outer wall of the furnace body can be reduced, cold water can be preheated in the third aspect, the preheated water can be supplied into the lower header, and the water with higher temperature in the lower header cannot be impacted, so that the steam generator can stably run.

As a further improvement of the utility model, heat exchange fins are arranged outside the tube array. The heat exchange fins can enable the tube array to absorb heat more fully, and heat exchange efficiency is improved.

Further, a hopper is arranged on the outer side of the furnace body, and the lower end of the hopper is connected to the combustion chamber through a feeding mechanism and a feeding pipe. Further, a blowing device is arranged on the side face of the lower portion of the furnace body, and an air outlet of the blowing device is connected to the combustion chamber. The structure enables the utility model to utilize biomass fuel as energy. The utility model is not limited to biomass energy, and can be made into fuel oil, fuel gas and coal-fired steam generators through the arrangement of the burner.

In order to facilitate cleaning, the furnace body is provided with an ash removing opening at the position corresponding to the combustion chamber.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a partial cross-sectional view of A-A of FIG. 1.

In the figure, a blowing device 1, a dust removing port 2, a feeding pipe 3, a hopper 4, a header 5, a connecting pipe 6, a vortex heat exchange cavity 7, a steam chamber 8, a steam outlet 9, a smoke baffle 10, a smoke outlet 11, a preheating water jacket 12, an inner layer tube array 13, an outer layer tube array 14, heat exchange fins 15, a lower header 16, a combustion chamber 17 and a flow baffle 18.

Detailed Description

1-2, a vertical water pipe steam generating device comprises a vertically arranged furnace body, wherein a combustion chamber 17 is arranged at the lower part of the furnace body, a flue gas heat exchange cavity is arranged above the combustion chamber 17 in the furnace body, two layers of tubes are arranged in the flue gas heat exchange cavity in a concentric ring shape vertically, the lower end openings of the tubes are connected to a lower header 16 in a ring shape, and the upper end openings of the tubes are connected to an upper header 5; adjacent tubes of the inner layer tube array 13 and adjacent tubes of the outer layer tube array 14 are connected by a flow separation plate 18; the lower part of the flow separation plate 18 corresponding to the inner layer tube array 13 is connected with the lower header 16 in a sealing way, and a gap is reserved between the upper part of the flow separation plate 18 corresponding to the inner layer tube array 13 and the upper header 5; gaps are reserved between the lower parts of the flow separation plates 18 corresponding to the outer layer tubes 14 and the lower header 16, and the upper parts of the flow separation plates 18 corresponding to the outer layer tubes 14 are connected with the upper header 5 in a sealing way; the upper side of the upper header 5 is connected with a circular steam chamber 8 through a plurality of connecting pipes 6, the steam chamber 8 is connected with a steam outlet 9, and the upper opening part of the steam chamber 8 is provided with a smoke baffle 10; flue gas channels are reserved between the outer layer tube array 14, the upper header 5 and the outer periphery of the steam chamber 8 and the inner wall of the furnace body, and the top of each flue gas channel is connected with a smoke outlet 11.

The outer walls of the adjacent connecting pipes 6 are connected in a sealing way, so that a vortex heat exchange cavity 7 with only an opening at the bottom is formed among the steam chamber 8, the connecting pipes 6 and the upper header 5. The density of the flue gas burnt in the combustion chamber 17 is smaller as the temperature of the flue gas is higher, so that the flue gas with the highest temperature can enter the vortex heat exchange cavity 7 to exchange heat with steam in the steam chamber 8, the quality of superheated steam can be further improved, the density of the flue gas is increased and reduced after the temperature of the flue gas is reduced, and then the flue gas passes through the inner layer tube array 13 and the outer layer tube array 14, and the flue gas in the vortex heat exchange cavity 7 is supplemented by new high-temperature flue gas, so that the flue gas with the high temperature in the interior of the flue gas is always ensured.

In order to further ensure the utilization of heat energy, a preheating water jacket 12 is arranged on the outer side of the upper part of the furnace body. The preheating water jacket 12 is arranged on the outer side, so that low-temperature waste heat in the flue gas can be recycled on one hand, and the energy-saving effect is achieved; on the other hand, the temperature of the outer wall of the furnace body can be reduced, cold water can be preheated in the third aspect, the preheated water can be supplied into the lower header, and the water with higher temperature in the lower header cannot be impacted, so that the steam generator can stably run.

As a further improvement of the utility model, heat exchange fins 15 are arranged outside the tube array. The heat exchange fins 15 can enable the tube array to absorb heat more fully, and heat exchange efficiency is improved.

Further, a hopper 4 is arranged on the outer side of the furnace body, and the lower end of the hopper 4 is connected to a combustion chamber 17 through a feeding mechanism and a feeding pipe 3. Further, a blowing device 1 is arranged on the side surface of the lower part of the furnace body, and an air outlet of the blowing device 1 is connected to the combustion chamber 17. The structure enables the utility model to utilize biomass fuel as energy. The utility model is not limited to biomass energy, and can be made into fuel oil, fuel gas and coal-fired steam generators through the arrangement of the burner.

For cleaning, the furnace body is provided with an ash cleaning port 2 at the position corresponding to the combustion chamber 17.

The device is not only limited to combusting biomass fuel, but also can be manufactured into boilers for burning fuel oil, fire coal and natural gas by changing corresponding feeding structures.

When the utility model works, the lower header 16 is filled with water and can be continuously supplied with the water through an external pipeline and a pump, after fuel is combusted in the combustion chamber 17, the formed high-temperature flue gas enters the flue gas heat exchange cavity, bypasses the upper part of the inner layer tube array 13 and then turns back downwards, flows downwards between the inner layer tube array 13 and the outer layer tube array 14, bypasses the outer layer tube array 14 and flows upwards, passes through the flue gas channels between the outer layer tube array 14, the upper header 5 and the periphery of the steam chamber 8 and the inner wall of the furnace body, finally leaves from the smoke outlet 11, in the process, the water in the lower header 16 and the tube array exchanges heat with the flue gas, so that steam or steam-water mixture is generated, and enters the upper header 5, further, the steam in the upper header 5 enters the steam chamber 8 through the connecting pipe 6, the steam chamber 8 has various functions of steam-water separation, further heat absorption, superheated steam generation, buffering and the like, and the steam forms purer steam after the heat exchange of the steam chamber 8 is transmitted to an external steam use point from the steam outlet 9.

The flue gas flow channel is reasonable in design, and the flue gas heat exchange cavity is divided into the flow channels which are reciprocally turned back by the structural design of the inner layer of tube array, the outer layer of tube array and the flow separation plate 18, so that the tube array and the flue gas can exchange heat fully; because the space inside the steam chamber 8 is connected with the flue gas heat exchange cavity, steam can absorb heat from the inner side and the outer side, and entrained water can be further vaporized, so that the steam quality is better; the water storage volumes of the lower header 16 and the tube array of the device are smaller, the steam rising speed is high, and the gas production rate is high; the device can utilize coal, oil, natural gas or living beings as fuel and carry out steam preparation, can be applied to various places that need steam.

The utility model is not limited to the above embodiments, and based on the technical solution disclosed in the utility model, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the utility model.

Claims

1. The utility model provides a vertical water pipe steam generator, includes the furnace body of vertical setting, and the lower part of furnace body is equipped with the combustion chamber, and the furnace body is interior to be equipped with flue gas heat transfer cavity above the combustion chamber, its characterized in that: two layers of tubes are arranged in the flue gas heat exchange cavity in a concentric ring shape in a vertical mode, the lower end openings of the tubes are connected to the lower header in a ring shape, and the upper end openings of the tubes are connected to the upper header; adjacent tubes of the inner layer tube array are connected by a flow separation plate; the lower part of the flow isolation plate corresponding to the inner layer tube array is connected with the lower header in a sealing way, and a gap is reserved between the upper part of the flow isolation plate corresponding to the inner layer tube array and the upper header; a gap is reserved between the lower part of the flow isolation plate corresponding to the outer layer tube array and the lower header, and the upper part of the flow isolation plate corresponding to the outer layer tube array is connected with the upper header in a sealing way; the upper side of the upper header is connected with a circular steam chamber through a plurality of connecting pipes, the steam chamber is connected with a steam outlet, and the upper opening part of the steam chamber is provided with a smoke baffle plate; and a flue gas channel is reserved between the outer layer tube array, the upper header and the periphery of the steam chamber and the inner wall of the furnace body, and the top of the flue gas channel is connected with a smoke outlet.

2. A vertical water tube steam generator according to claim 1, wherein: the outer walls of the adjacent connecting pipes are connected in a sealing way, so that a vortex heat exchange cavity with only an opening at the bottom is formed among the steam chamber, the connecting pipes and the upper header.

3. A vertical water tube steam generator according to claim 1, wherein: and a preheating water jacket is arranged on the outer side of the upper part of the furnace body.

4. A vertical water tube steam generator according to claim 1, wherein: and heat exchange fins are arranged outside the tube array.

5. A vertical water tube steam generator according to any one of claims 1 to 4, wherein: the outside of furnace body is equipped with the hopper, and the hopper lower extreme is connected to the combustion chamber through feeding mechanism and inlet pipe.

6. A vertical water tube steam generator according to any one of claims 1 to 4, wherein: the side of the lower part of the furnace body is provided with a blowing device, and an air outlet of the blowing device is connected to the combustion chamber.

7. A vertical water tube steam generator according to any one of claims 1 to 4, wherein: the furnace body is provided with an ash removing opening at the position corresponding to the combustion chamber.