CN220230180U - Waste heat recovery device of gas boiler - Google Patents

Waste heat recovery device of gas boiler Download PDF

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Publication number
CN220230180U
CN220230180U CN202321599563.8U CN202321599563U CN220230180U CN 220230180 U CN220230180 U CN 220230180U CN 202321599563 U CN202321599563 U CN 202321599563U CN 220230180 U CN220230180 U CN 220230180U
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CN
China
Prior art keywords
smoke
heat exchange
gas boiler
tube
cavity
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Active
Application number
CN202321599563.8U
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Chinese (zh)
Inventor
魏勇
刘广益
杨志刚
霍永欢
张亚强
徐逸飞
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Henan Yuyuan Boiler Machinery Co ltd
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Henan Yuyuan Boiler Machinery Co ltd
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Priority to CN202321599563.8U priority Critical patent/CN220230180U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage

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  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The utility model discloses a gas boiler waste heat recovery device, which comprises a heat exchange cylinder arranged above a gas boiler body, wherein a smoke exhaust pipe is arranged at a smoke outlet at the upper end of the gas boiler body; the gas boiler waste heat recovery device comprises a gas boiler body, wherein a heat exchange cylinder is arranged at the upper end of the gas boiler body through a fixing frame, a conical cylinder which is gradually increased from top to bottom is fixed in an inner cavity of the heat exchange cylinder, a water storage cavity is formed between the outer side of the conical cylinder and the inner cavity of the heat exchange cylinder, a smoke inlet of the smoke cavity is communicated with a smoke outlet of a smoke exhaust pipe, and the gas boiler waste heat recovery device improves the temperature locking effect on smoke by arranging the conical cylinder which is gradually increased from top to bottom in the heat exchange cylinder, and simultaneously is matched with a spiral baffle plate in the conical cylinder, so that the flow velocity of the smoke in the smoke cavity is slowed down, the contact time with the water storage cavity is prolonged, the recovery effect on smoke waste heat is improved, the whole structure is simple, and the production cost is low.

Description

Waste heat recovery device of gas boiler
Technical Field
The utility model belongs to the technical field of waste heat recovery of gas boilers, and particularly relates to a waste heat recovery device of a gas boiler.
Background
The gas boiler comprises a gas water boiler, a gas hot water boiler, a gas steam boiler and the like, when the gas boiler is used, smoke is discharged to the outside through a smoke discharge pipe, a large amount of heat energy is contained in the discharged smoke and attached to the bottom of the boiler, and a waste heat recovery device is needed to recover the heat energy in the smoke discharged by the boiler and the heat energy of the attached part.
The waste heat that produces when gas boiler operation mainly is by the exhaust gas cause, and this kind of exhaust gas discharges to the air in, can cause the energy extravagant, consequently, present mostly carries out recycle to these waste heat through setting up the heat exchanger in gas boiler's exhaust port department, but the inside straight-through structure that is of present common heat exchanger, and flue gas gets into the heat exchanger time weak point, and the heat transfer effect is relatively poor, and patent as the application number 201420295914.0 discloses a gas boiler waste heat recovery device, and the device is nevertheless can be with the heat recovery who discharges, but has the shortcoming that above-mentioned effect is poor to waste heat recovery.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides the waste heat recovery device of the gas boiler, which improves the temperature locking effect on smoke by arranging the conical cylinder which is gradually increased from top to bottom in the heat exchange cylinder, and simultaneously, the flow velocity of the smoke in the smoke cavity is slowed down by matching with the spiral baffle plate in the conical cylinder, and the contact time with the water storage cavity is prolonged, so that the waste heat recovery effect on the smoke is improved, and the waste heat recovery device has the advantages of simple integral structure and low production cost.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the waste heat recovery device of the gas boiler comprises a heat exchange cylinder arranged above a gas boiler body, wherein a smoke exhaust pipe is arranged at a smoke exhaust port at the upper end of the gas boiler body; the gas boiler is characterized in that the heat exchange tube is arranged at the upper end of the gas boiler body through the fixing frame, the conical tube which is gradually increased from top to bottom is fixed in the inner cavity of the heat exchange tube, the water storage cavity is formed in the inner cavity between the outer side of the conical tube and the heat exchange tube, the smoke inlet of the smoke cavity is communicated with the smoke outlet of the smoke exhaust tube, the water injection tube communicated with the water storage cavity is arranged at the upper side of the heat exchange tube, the water discharge tube communicated with the water storage cavity is arranged at the bottom end of the left side of the heat exchange tube, the smoke outlet of the upper side of the conical tube is provided with the smoke outlet tube which extends to the outer side of the heat exchange tube, the spiral baffle plate is arranged at the inner side of the conical tube, the temperature locking effect on smoke is improved by arranging the conical tube which is gradually increased from top to bottom in the heat exchange tube, the flow velocity of the smoke in the smoke cavity is slowed down by matching with the spiral baffle plate in the conical tube, the contact time with the water storage cavity is prolonged, the recovery effect on the smoke waste heat is improved, the whole structure is simple, and the production cost is low.
Further, the inner wall of the heat exchange cylinder is provided with heat preservation rock wool, and heat dissipation of the heat exchange cylinder can be reduced by arranging the heat preservation rock wool, so that the heat preservation effect is improved.
Compared with the prior art, the utility model has the beneficial effects that: through set up the toper section of thick bamboo that top-down increases gradually in the heat exchange tube, improved the lock temperature effect to the flue gas, the screw baffle in the toper section of thick bamboo of cooperation simultaneously has slowed down the velocity of flow of flue gas in the cigarette intracavity, has improved the contact time with the water storage chamber to improved the recovery effect to flue gas waste heat, overall structure is simple, low in production cost, through setting up heat preservation rock wool at the inner wall of heat exchange tube, can reduce heat exchange tube heat loss, improved its heat preservation effect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
In the figure: 1 gas boiler body, 2 smoke exhaust pipe, 3 mount, 4 heat exchange tube, 5 water injection pipe, 6 drain pipe, 7 toper section of thick bamboo, 8 water storage chamber, 9 smoke chamber, 10 play tobacco pipe, 11 heat preservation rock wool, 12 spiral baffling boards.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Examples
Referring to fig. 1, a waste heat recovery device of a gas boiler comprises a heat exchange tube 4 arranged above a gas boiler body 1, and a smoke exhaust tube 2 is arranged at a smoke outlet at the upper end of the gas boiler body 1; the upper end of the gas boiler body 1 is provided with a heat exchange tube 4 through a fixing frame 3, the inner cavity of the heat exchange tube 4 is fixedly provided with a conical tube 7 which is gradually increased from top to bottom, the inner cavity between the outer side of the conical tube 7 and the heat exchange tube 4 forms a water storage cavity 8, the inner side of the conical tube 7 forms a smoke cavity 9, a smoke inlet of the smoke cavity 9 is communicated with a smoke outlet of the smoke exhaust tube 2, the upper side of the heat exchange tube 4 is provided with a water injection tube 5 communicated with the water storage cavity 8, the bottom end of the left side of the heat exchange tube 4 is provided with a water drain tube 6 communicated with the water storage cavity 8, the smoke outlet of the upper side of the conical tube 7 is provided with a smoke outlet tube 10 which extends to the outer side of the heat exchange tube 4, the inner side of the conical tube 7 is provided with a spiral baffle 12, the temperature locking effect on smoke is improved by arranging the conical tube 7 which is gradually increased from top to bottom in the heat exchange tube 4, and the spiral baffle 12 in the conical tube 7 is matched at the same time, so that the flow rate of the smoke in the smoke cavity is slowed down, the contact time with the water storage cavity 8 is prolonged, the recovery effect on the smoke is improved, and the whole structure is simple, and the production cost is low.
The inner wall of the heat exchange tube 4 is provided with heat preservation rock wool 11, and heat dissipation of the heat exchange tube 4 can be reduced and the heat preservation effect is improved by arranging the heat preservation rock wool 11.
Working principle: the water to be subjected to heat exchange is added into the water storage cavity 8 of the heat exchange cylinder 4 through the water injection pipe 5, the flue gas generated when the gas boiler body 1 is used flows into the flue cavity 9 at the inner side of the conical cylinder 7 through the smoke exhaust pipe 2, then the flue gas slowly moves upwards along the spiral baffle plate 12, in the moving process of the flue gas, the water in the water storage cavity 8 is heated, the temperature locking effect on the flue gas is improved by arranging the conical cylinder 7 which is gradually increased from top to bottom in the heat exchange cylinder 4, meanwhile, the flow velocity of the flue gas in the flue cavity is slowed down by matching with the spiral baffle plate 12 in the conical cylinder 7, the contact time with the water storage cavity 8 is prolonged, so that the recycling effect on the flue gas waste heat is improved, the whole structure is simple, the production cost is low, the heat dissipation of the heat exchange cylinder 4 can be reduced, and the heat insulation effect is improved by arranging the heat insulation rock wool 11 on the inner wall of the heat exchange cylinder 4.
While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (2)

1. The utility model provides a gas boiler waste heat recovery device, includes the heat exchange tube of installing in gas boiler body top, the exhaust port department of gas boiler body upper end installs the exhaust pipe, its characterized in that: the gas boiler is characterized in that the heat exchange tube is arranged at the upper end of the gas boiler body through the fixing frame, the conical tube which is gradually increased from top to bottom is fixed in the inner cavity of the heat exchange tube, the water storage cavity is formed in the inner cavity between the outer side of the conical tube and the heat exchange tube, the smoke inlet of the smoke cavity is communicated with the smoke outlet of the smoke exhaust tube, the water injection tube communicated with the water storage cavity is arranged at the upper side of the heat exchange tube, the drain pipe communicated with the water storage cavity is arranged at the bottom end of the left side of the heat exchange tube, the smoke outlet of the upper side of the conical tube is provided with the smoke outlet tube which extends to the outer side of the heat exchange tube, and the spiral baffle plate is arranged at the inner side of the conical tube.
2. The gas boiler waste heat recovery device according to claim 1, wherein: the inner wall of the heat exchange cylinder is provided with heat preservation rock wool.
CN202321599563.8U 2023-06-22 2023-06-22 Waste heat recovery device of gas boiler Active CN220230180U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321599563.8U CN220230180U (en) 2023-06-22 2023-06-22 Waste heat recovery device of gas boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321599563.8U CN220230180U (en) 2023-06-22 2023-06-22 Waste heat recovery device of gas boiler

Publications (1)

Publication Number Publication Date
CN220230180U true CN220230180U (en) 2023-12-22

Family

ID=89175539

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321599563.8U Active CN220230180U (en) 2023-06-22 2023-06-22 Waste heat recovery device of gas boiler

Country Status (1)

Country Link
CN (1) CN220230180U (en)

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