Steam boiler

Abstract

The utility model discloses a steam boiler which comprises a burner, a boiler body is arranged on one side of the burner, a hearth is arranged in the boiler body, a flue connected with the boiler body is arranged on one side of the upper end of the boiler body, and an energy saver and a condenser which are connected with the flue are sequentially arranged at the other end, away from the boiler body, of the flue. The energy-saving boiler has the advantages that the temperature of generated steam is high, compared with an existing boiler, the heat efficiency is higher, pollution to the environment is small, smoke coming out of the energy-saving device enters the condenser, normal-temperature water in the condenser exchanges heat with the smoke through water pump circulation, the smoke temperature is further lowered, the heat efficiency of the boiler is improved, and energy is saved. Precipitated floccules at the bottom of the lower boiler barrel are regularly discharged through the blow-off pipe, and the service life of the boiler is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steam boiler technical field, concretely is a steam boiler. BACKGROUND

[0002] At present, vertical industrial and civil boilers are all of straight water pipe structure or bent water pipe structure two patterns. The generated steam temperature is all saturated steam temperature, so the temperature is lower, the thermal efficiency is not high, and the discharged smoke dust is more serious to the environmental pollution. Now although coal gas generating device is used on the bent water pipe boiler, the combustion condition is improved, and the smoke dust pollution is eliminated. However, the furnace body mostly adopts firebrick or fireproof concrete arch top. Such structure is easy to damage, the overhaul workload is big, and the generated steam temperature is only saturated steam temperature. Moreover, when the boiler adds cold water, the steam supply cannot be continuous, and the continuity requirement of industrial production steam is not adapted. INVENTION CONTENTS

[0003] The utility model discloses a steam boiler, to solve the problem in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a steam boiler, including combustor, the one side of combustor is provided with boiler body, is equipped with hearth in boiler body, is equipped with flue with the connection of one side on the upper end of boiler body, the other end of flue is equipped with energy saving device and condenser with the connection of one side away from boiler body.

[0005] Further optimization, the hearth is composed of right side membrane wall, intermediate membrane wall, upper drum and lower drum, and fuel is combusted in the hearth space.

[0006] Further optimization, the right side membrane wall and intermediate membrane wall are connected with the upper drum and lower drum respectively, and form the hearth.

[0007] Further optimization, the upper end of boiler body located at the hearth is provided with the convection heat exchange area, and the convection heat exchange area is composed of left side membrane wall and intermediate membrane wall, and the flue gas generated by combustion turns in the rear part of the hearth and enters the convection heat exchange area.

[0008] Further optimization, the convection heat exchange area is also provided with the convection pipe connected with it, and the flue gas exchanges heat in the convection heat exchange area and the convection pipe, heats the water in the convection pipe, generates steam through natural circulation.

[0009] Further optimization, the lower end of lower drum is provided with the blowdown pipe connected with it, and the impurities in the drum are blowed down regularly.

[0010] Further optimization, the economizer comprises a first flue gas inlet and a first flue gas outlet, a first serpentine finned tube is arranged between the first flue gas inlet and the first flue gas outlet, economizer inlet headers and economizer outlet headers are arranged on the two sides adjacent to the flue gas inlet and the first flue gas outlet respectively, and a manhole is arranged at the lower end of the serpentine finned tube.

[0011] Further optimization, the condenser comprises a second flue gas inlet and a second flue gas outlet, a second serpentine finned tube is arranged between the second flue gas inlet and the second flue gas outlet, condenser inlet headers and condenser outlet headers are arranged on the two sides adjacent to the second flue gas inlet and the second flue gas outlet respectively.

[0012] Further optimization, the second serpentine finned tube is provided with a pipe base at the lower end, and the pipe base 21 is used for draining condensed water in the flue gas.

[0013] Beneficial effects

[0014] The steam boiler provided by the utility model has high steam temperature, higher heat efficiency and smaller environmental pollution compared with existing boilers; flue gas from the economizer enters the condenser, normal-temperature water in the condenser is circulated by a water pump and exchanges heat with the flue gas, the flue gas temperature is further reduced, the heat efficiency of the boiler is improved, precipitated flocculent substances at the bottom of the lower drum are discharged through the blowdown pipe at regular time, and the service life of the boiler is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model;

[0016] Figure 2 It is a boiler body structure schematic view of the utility model;

[0017] Figure 3 It is an economizer structure schematic view of the utility model;

[0018] Figure 4 It is an economizer internal structure schematic view of the utility model;

[0019] Figure 5 It is a condenser structure schematic view of the utility model;

[0020] Figure 6 It is a condenser internal structure schematic view of the utility model. DETAILED DESCRIPTION

[0021] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0022] EMBODIMENT

[0023] As Figures 1-6As shown, a steam boiler comprises a burner 1, a boiler body 2 provided on one side of the burner 1, a hearth arranged in the boiler body 2, a flue 3 connected to the upper end of the boiler body 2, and an economizer 4 and a condenser 5 connected to the other end of the flue 3 away from the boiler body 2.

[0024] In this embodiment, the hearth is composed of a right membrane wall 7, an intermediate membrane wall 8, an upper drum 6 and a lower drum 11. The right membrane wall 7 and the intermediate membrane wall 8 are connected to the upper drum 6 and the lower drum 11 respectively to form the hearth, and fuel is combusted in the hearth space.

[0025] The upper end of the boiler body 2 located at the hearth is provided with a convection heat exchange zone composed of a left membrane wall 9 and the intermediate membrane wall 8, and the flue gas generated by combustion is turned at the rear of the hearth and enters the convection heat exchange zone.

[0026] The convection heat exchange zone is further provided with a convection tube 10 connected thereto, and the flue gas exchanges heat with the convection tube in the convection heat exchange zone to heat the water in the convection tube, and steam is generated through natural circulation.

[0027] The lower end of the lower drum 11 is provided with a blowdown pipe 12 connected thereto, which regularly discharges the precipitated flocculent material at the bottom of the lower drum 11 to prolong the service life of the boiler.

[0028] The economizer 4 comprises a first flue gas inlet 17 and a first flue gas outlet 13, and a first serpentine finned tube 18 is arranged between the first flue gas inlet 17 and the first flue gas outlet 13. An economizer inlet header 14 and an economizer outlet header 16 are arranged on the two sides adjacent to the first flue gas inlet 17 and the first flue gas outlet 13 respectively. An access door 15 is arranged at the lower end of the serpentine finned tube 18. The flue gas from the boiler body 2 enters the flue gas inlet 17, exchanges heat with the serpentine finned tube 18 to heat the deoxygenated water in the tube, and is discharged from the flue gas outlet 13. The feed water enters the economizer inlet header 14, and after exiting from the economizer outlet header 16, enters the boiler body 2. The access door 15 is used for shutdown maintenance and drainage.

[0029] The condenser 5 comprises a second flue gas inlet 23 and a second flue gas outlet 19, and a second serpentine finned tube 24 is arranged between the second flue gas inlet 23 and the second flue gas outlet 19. A condenser inlet header 20 and a condenser outlet header 22 are arranged on the two sides adjacent to the second flue gas inlet 23 and the second flue gas outlet 19 respectively. The flue gas from the economizer 4 enters the flue gas inlet 23, exchanges heat with the serpentine finned tube 24 to heat the circulating water in the tube, and is discharged from the flue gas outlet 19. The circulating water enters the condenser inlet header 20, and after exiting from the condenser outlet header 22, enters the water tank for circulation.

[0030] The lower end of the second serpentine finned tube 24 is provided with a tube seat 21, which is used for draining the condensed water in the flue gas.

[0031] The fuel is combusted in the furnace of the boiler body by the burner, the flue gas generated by the combustion heats the boiler water into steam, the heat-exchanged and cooled flue gas goes out of the boiler body, enters the connecting flue, goes out of the connecting flue, enters the economizer to heat the boiler feed water, the flue gas of the economizer goes into the condenser, the normal temperature water in the condenser is circulated by the water pump and exchanges heat with the flue gas, further reduces the flue gas temperature, and improves the boiler thermal efficiency.

[0032] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of the present application.

Claims

1. A steam boiler, characterized by: The utility model provides a boiler, including burner (1), one side of burner (1) is equipped with boiler body (2), be equipped with hearth in boiler body (2), one side of boiler body (2) upper end is equipped with with it connects flue (3), the other end of flue (3) away from boiler body (2) is equipped with with it connects economizer (4) and condenser (5) in proper order, the economizer (4) includes first flue gas import (17) with first flue gas export (13), is equipped with first serpentine finned tube (18) between it, the both sides of first flue gas import (17) with first flue gas export (13) adjacent are equipped with economizer import header (14) and economizer export header (16) respectively, the lower end of serpentine finned tube (18) is opened with access door (15), the condenser (5) includes second flue gas import (23) with second flue gas export (19), is equipped with second serpentine finned tube (24) between it, the both sides of second flue gas import (23) with second flue gas export (19) adjacent are equipped with condenser import header (20) and condenser export header (22) respectively.

2. The steam boiler according to claim 1, characterized in that: The hearth is composed of a right membrane wall (7), a middle membrane wall (8), an upper drum (6) and a lower drum (11).

3. The steam boiler according to claim 2, characterized in that: The right membrane wall (7) and the middle membrane wall (8) are connected with the upper drum (6) and the lower drum (11) respectively to form the hearth.

4. The steam boiler of claim 1, wherein: The boiler body (2) is provided with a convection heat exchange zone at the upper end of the hearth, and the convection heat exchange zone is composed of a left membrane wall (9) and the middle membrane wall (8).

5. The steam boiler according to claim 4, characterized in that: The convection heat exchange zone is further provided with a convection tube (10) connected thereto.

6. The steam boiler according to claim 2, characterized in that: The lower drum (11) is provided with a blowdown pipe (12) connected thereto at the lower end.

7. The steam boiler of claim 1, wherein: The lower end of the second serpentine finned tube (24) is provided with a tube base (21).

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