CN110645577B - A economizer supports fixed knot and constructs for waste incinerator - Google Patents

A economizer supports fixed knot and constructs for waste incinerator Download PDF

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Publication number
CN110645577B
CN110645577B CN201910953510.3A CN201910953510A CN110645577B CN 110645577 B CN110645577 B CN 110645577B CN 201910953510 A CN201910953510 A CN 201910953510A CN 110645577 B CN110645577 B CN 110645577B
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economizer
heat exchange
layer
exchange tube
supporting
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CN110645577A (en
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王刚
高新宇
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Harbin Boiler Co Ltd
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Harbin Boiler Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
    • F22D1/04—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways the tubes having plain outer surfaces, e.g. in vertical arrangement
    • F22D1/06—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways the tubes having plain outer surfaces, e.g. in vertical arrangement in horizontal arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/20—Waste heat recuperation using the heat in association with another installation
    • F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/12—Heat utilisation in combustion or incineration of waste

Abstract

The invention belongs to the technical field of garbage incinerators, and relates to a coal economizer supporting and fixing structure for a garbage incinerator, which is provided aiming at the problem that the existing coal economizer mounting mode is not suitable for a roof-free framework, and comprises the following components: the sliding support structure is used for separating the economizer into an upper economizer and a lower economizer by a main steel structure of the boiler, the upper economizer and the lower economizer are heat exchange tube panels formed by communicating a plurality of rows of heat exchange tubes, the upper economizer is arranged on the main steel structure of the boiler through the sliding support structure, and the lower economizer is fixed on the inner wall of the flue through a lower support beam; every two adjacent layers of heat exchange tubes in the upper layer economizer and the lower layer economizer are connected through supporting blocks, and the supporting blocks are distributed on the two sides and the middle of each layer of heat exchange tube. The invention simplifies the simple installation of the economizer and has better stability after installation.

Description

A economizer supports fixed knot and constructs for waste incinerator
The technical field is as follows:
the invention belongs to the technical field of garbage incinerators, and particularly relates to a coal economizer supporting and fixing structure for a garbage incinerator.
Background art:
the garbage incinerator is an important link in the process of incinerating domestic garbage, and the coal economizer is one of main devices in a boiler combustion system, is positioned in a vertical flue at the tail of a boiler and is a heat exchange device for heating boiler feed water by utilizing the heat of flue gas at the tail of the boiler. The economizer is supported and fixed in the traditional installation process by adopting a top hanging mode generally, but when the garbage incinerator is arranged indoors, the traditional top hanging supporting and fixing structure cannot be applied due to the fact that a roof framework is not arranged.
The invention content is as follows:
the invention aims to overcome the defects and provides a coal economizer supporting and fixing structure for a garbage incinerator, which can solve the supporting and fixing problem between a coal economizer and a flue under the condition of no roof framework.
The technical scheme adopted by the invention is as follows: an economizer support fixing structure for a garbage incinerator, comprising: the sliding support structure is used for separating the economizer into an upper economizer and a lower economizer by a main steel structure of the boiler, the upper economizer and the lower economizer are heat exchange tube panels formed by communicating a plurality of rows of heat exchange tubes, the upper economizer is arranged on the main steel structure of the boiler through the sliding support structure, and the lower economizer is fixed on the inner wall of the flue through a lower support beam; every two adjacent layers of heat exchange tubes in the upper layer economizer and the lower layer economizer are connected through supporting blocks, and the supporting blocks are distributed on the two sides and the middle of each layer of heat exchange tube.
Preferably, the sliding support structure comprises a main support beam, four sliding support blocks and limit stops, the main support beam is fixed below the upper-layer economizer, the limit stops are fixed on the upper end face of the main steel structure of the boiler, the four limit stops jointly form a rectangular limit area, expansion gaps are reserved among the four limit stops, the upper end of each sliding support block is fixed on the main support beam, and the lower end of each sliding support block is installed in the limit area.
Preferably, the upper end face and the lower end face of each support block positioned on two sides of each heat exchange tube are fixed with the adjacent heat exchange tube, the lower end face of each support block positioned in the middle of each heat exchange tube is fixed with the adjacent lower-layer heat exchange tube, and the upper end face of each support block is in contact with and not fixedly connected with the adjacent upper-layer heat exchange tube.
Preferably, each layer of support block positioned in the middle of the heat exchange tube is two support blocks arranged in parallel at intervals.
Preferably, the upper end surface and the lower end surface of the supporting block are both arc-shaped, and the radian of the arc is the same as that of the outer wall of the heat exchange tube contacted with the arc.
Preferably, the flue is enclosed by four flue inner guard plates.
The invention has the beneficial effects that:
1. according to the invention, the supporting blocks are arranged between each layer of heat exchange pipe, the supporting structure plays a supporting role and is beneficial to the release of the expanded economizer, the support and the hanging are skillfully combined, the supporting blocks are arranged layer by layer, the load of the upper-layer economizer can be transmitted to the main supporting beam below the upper-layer economizer, the load of the lower-layer economizer is transmitted to the lower-layer supporting beam through the supporting blocks, the lower-layer supporting beam is transmitted to the main supporting beam through the inner flue protection plate, and the lower-layer economizer does not need to be provided with a supporting structure on the main steel structure of the boiler, so that the structure is simplified.
2. Because the upper coal economizer is fixed on the main supporting beam through the supporting block, and the lower coal economizer is fixed on the lower supporting beam through the supporting block, the supporting and fixing structure is more stable than the traditional hanging structure, and the phenomenon of vibration of the pipe group can not occur.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an enlarged view of FIG. 1 at B;
FIG. 4 is an enlarged view of FIG. 1 at C;
FIG. 5 is an enlarged view taken at D-D in FIG. 4;
wherein: 1 flue, 11 flue inner guard plates, 2 economizer, 21 upper economizer, 22 lower economizer, 3 heat exchange tubes, 4 sliding support structures, 40 main support beams, 41 sliding support blocks, 42 limit stops, 5 boiler main steel structures, 6 lower support beams, 7 support blocks, 8 economizer outlet header and 9 economizer inlet header.
The specific implementation mode is as follows:
as shown in fig. 1 and 2, the present invention is an economizer support fixing structure for a garbage incinerator, comprising: the device comprises a flue 1 and an economizer 2, wherein the flue 1 is formed by enclosing four flue inner guard plates 11, and a flue gas channel is formed in the middle. The economizer 2 is arranged in the flue 1, the economizer 2 is divided into an upper-layer economizer 21 and a lower-layer economizer 22 by a boiler main steel structure 5 horizontally penetrating through the flue 1, the upper-layer economizer 21 and the lower-layer economizer 22 are connected in series, the outlet end of the upper-layer economizer 21 is communicated with an economizer outlet header 8, and the inlet end of the lower-layer economizer 22 is communicated with an economizer inlet header 9.
As shown in fig. 3, the upper-layer economizer 21 and the lower-layer economizer 22 are heat exchange tube panels formed by communicating a plurality of rows of heat exchange tubes 3, each two adjacent layers of heat exchange tubes 3 are connected through a support block 7, the upper end surface and the lower end surface of each support block 7 are circular arc-shaped, the radian of each circular arc is the same as that of the outer wall of the heat exchange tube 3 in contact with the circular arc, and the support blocks 7 and the heat exchange tubes 3 are better in fit degree due to the same radian. The supporting blocks 7 are distributed on two sides of each layer of heat exchange tube 3, the supporting blocks 7 are positioned on two sides of the heat exchange tubes 3, and the upper end surface and the lower end surface of each supporting block 7 are welded and fixed with the adjacent heat exchange tubes 3. In order to prevent the heat exchange tubes 3 from being flexibly bent at the middle positions, a support block 7 is also provided at the middle position of each layer of the heat exchange tubes 3. Because the heat exchange tube 3 can expand when the economizer 2 is heated, and an expansion space is reserved for the heat exchange tube 3 during design, the connection mode of the supporting block 7 positioned in the middle of the heat exchange tube 3 and the upper and lower adjacent heat exchange tubes 3 is different from that of the supporting blocks 7 positioned on the two sides. The lower end face of the supporting block 7 positioned in the middle is welded and fixed with the adjacent lower-layer heat exchange tube 3, the upper end face of the supporting block is in contact with the adjacent upper-layer heat exchange tube 3 and is of a non-welded structure, and in order to enable the supporting force of the middle position of the heat exchange tube 3 to be better, two supporting blocks 7 positioned in the middle of the heat exchange tube 3 are arranged in parallel at intervals.
As shown in fig. 4 and 5, the bottom of the upper layer economizer 21 is mounted on the boiler main steel structure 5 through a sliding support structure 4, and the sliding support structure 4 can limit the upper layer economizer 21 from being displaced greatly when the economizer 2 is thermally expanded. The number of the sliding support structures 4 is the same as the number of the rows of the support blocks 7, and the sliding support structures are longitudinally and coaxially arranged. The sliding support structure 4 comprises a main support beam 40, four sliding support blocks 41 and limit stops 42, wherein the main support beam 40 is welded on the lower end face of the upper-layer economizer 21, the limit stops 42 are welded on the upper end face of the main steel structure 5 of the boiler, the four limit stops 42 jointly form a rectangular limit area, expansion gaps are reserved among the four limit stops 42 in order to prevent expansion after heating from being blocked, the upper end of each sliding support block 41 is welded at the bottom of the main support beam 40, the lower end of each sliding support block 41 is installed in the limit area, and when the upper-layer economizer 21 is heated to enable the sliding support blocks 41 to slide, the limit stops 42 in the front direction, the rear direction, the left direction and the right direction can limit the excessive displacement.
The lower end face of the lower-layer coal economizer 22 is fixed on the lower-layer supporting beam 6, the two ends of the lower-layer supporting beam 6 are fixed on the flue inner guard plates 11 on the two sides of the flue 1, and the flue inner guard plates 11 are hung on the main supporting beam 40.
The working process is as follows:
the high-temperature flue gas from the garbage incinerator moves from top to bottom from the flue 1, and meanwhile, the high-temperature flue gas firstly passes through the upper-layer economizer 21 and then passes through the lower-layer economizer 22, and as the economizer 2 absorbs heat in the high-temperature flue gas, the smoke exhaust temperature of the flue gas is reduced, and energy is saved.
The above description is only a preferred embodiment of the present invention, and these embodiments are based on different implementations of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (4)

1. An economizer support fixing structure for a garbage incinerator, comprising: the coal economizer comprises a sliding support structure (4), wherein the coal economizer (2) is divided into an upper coal economizer (21) and a lower coal economizer (22) by a main boiler steel structure (5), the upper coal economizer (21) and the lower coal economizer (22) are heat exchange tube panels formed by communicating a plurality of rows of heat exchange tubes (3), the upper coal economizer (21) is installed on the main boiler steel structure (5) through the sliding support structure (4), the sliding support structure (4) comprises a main support beam (40), a sliding support block (41) and limit stops (42), the main support beam (40) is fixed below the upper coal economizer (21), the limit stops (42) are fixed on the upper end face of the main boiler steel structure (5), the number of the limit stops (42) is four, the four limit stops (42) jointly form a rectangular limit area, and expansion gaps are reserved among the four limit stops (42), the upper end of the sliding support block (41) is fixed on the main support beam (40), and the lower end of the sliding support block (41) is arranged in the limit area; the lower-layer coal economizer (22) is fixed on the inner wall of the flue (1) through a lower-layer supporting beam (6); every two adjacent layers of heat exchange tubes (3) in the upper layer of economizer (21) and the lower layer of economizer (22) are connected through supporting blocks (7), the supporting blocks (7) are distributed at the two sides and the middle position of each layer of heat exchange tube (3), the supporting blocks (7) positioned at the two sides of the heat exchange tubes (3) are fixed with the adjacent heat exchange tubes (3) on the upper end surface and the lower end surface; and the lower end surface of the supporting block (7) positioned in the middle of the heat exchange tube (3) is fixed with the adjacent lower-layer heat exchange tube (3), and the upper end surface of the supporting block is in contact with and is not fixedly connected with the adjacent upper-layer heat exchange tube (3).
2. The economizer support fixing structure for a garbage incinerator according to claim 1, wherein: two support blocks (7) which are positioned in the middle of each heat exchange tube (3) are arranged in parallel at intervals.
3. The economizer support fixing structure for a garbage incinerator of claim 2, wherein: the upper end surface and the lower end surface of the supporting block (7) are both arc-shaped, and the radian of the arc-shaped is the same as that of the outer wall of the heat exchange tube (3) contacted with the arc-shaped.
4. The economizer support fixing structure for a garbage incinerator according to claim 1, wherein: the flue (1) is formed by enclosing four flue inner guard plates (11).
CN201910953510.3A 2019-10-09 2019-10-09 A economizer supports fixed knot and constructs for waste incinerator Active CN110645577B (en)

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US5054436A (en) * 1990-06-12 1991-10-08 Foster Wheeler Energy Corporation Fluidized bed combustion system and process for operating same
US20160018113A1 (en) * 2014-07-17 2016-01-21 Enervex Inc. Boiler Flue Gas and Oven Exhaust Economizer Systems

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CN201662049U (en) * 2009-11-30 2010-12-01 上海锅炉厂有限公司 Serpentine tube bank supporting and hanging structure
CN103837036B (en) * 2013-12-03 2016-10-05 上海森松压力容器有限公司 The fixed support structure of coil pipe
PL3101340T3 (en) * 2015-06-01 2022-08-01 Alfa Laval Corporate Ab A heat exchanger
CN105222121B (en) * 2015-10-22 2017-04-12 浙江伟明环保股份有限公司 Boiler coal economizer
CN205859979U (en) * 2016-07-25 2017-01-04 北京哈宜节能环保科技开发有限公司 A kind of sliding bottom for the low low-level (stack-gas) economizer of power plant coal-burning boiler
CN207316885U (en) * 2017-10-30 2018-05-04 哈尔滨哈锅锅炉工程技术有限公司 A kind of snakelike tube support device
CN109099413B (en) * 2018-09-28 2023-12-15 江阴德耐特重工科技有限公司 High temperature acid flue gas economizer prevents supporting structure that expands

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054436A (en) * 1990-06-12 1991-10-08 Foster Wheeler Energy Corporation Fluidized bed combustion system and process for operating same
US20160018113A1 (en) * 2014-07-17 2016-01-21 Enervex Inc. Boiler Flue Gas and Oven Exhaust Economizer Systems

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