CN203147732U

CN203147732U - Enameled plate type coal economizer

Info

Publication number: CN203147732U
Application number: CN 201320001850
Authority: CN
Inventors: 刘鹏勃; 王明帅; 颜昕辉; 李春锋; 彭旭明; 王庆霞; 王学海; 潘毅; 杨国恒; 李立; 魏宏军
Original assignee: LANZHOU HENGDA PETROCHEMICAL MACHINERY CO Ltd
Current assignee: LANZHOU HENGDA PETROCHEMICAL MACHINERY CO Ltd
Priority date: 2013-01-04
Filing date: 2013-01-04
Publication date: 2013-08-21
Anticipated expiration: 2023-01-04

Abstract

An enameled plate type coal economizer comprises a flue connector flange, a circulating water connector flange, a heat transfer core, clamping bolt and nut components and pressing plates. The flue connector flange and the circulating water connector flange are respectively welded with the heat transfer core. The heat transfer core is clamped with the clamping bolt and nut components through the pressing plates and is of fully welded plate type and formed by welding plate pipes and fixed-length bars. Each plate pipe is integrally welded by a plate, a plate pipe sealing strip and a baffling bar in the plate pipe, and the outer surface of each plate pipe is enameled. The fixed-length bars are 8-12 square steel bars and made of carbon steel, and the surfaces of the fixed-length bars are enameled. The enameled plate type coal economizer is high in heat transfer efficiency, low in flow resistance, compact in structure and resistant to dew point corrosion.

Description

The board-like economizer of a kind of enamel

Technical field

The utility model belongs to the flue gas waste heat recovery apparatus field, relates to a kind of boiler economizer.

Background technology

Economizer is the heat-exchange apparatus that utilizes the feedwater of flue gas heating boiler in the boiler back end ductwork.Can absorb the heat of the lower flue gas of temperature by economizer, reduce the exhaust gas temperature of flue gas, save the energy, improve boiler thermal output.

Economizer is widely used in various boilers, the combustion furnace tail flue gas waste heat recovery apparatus, and traditional economizer structure is mainly fin tube type, has problems:

1, heat transfer efficiency is low, compactness is little, equipment is huge, and weight is heavier;

2, fin tube type economizer, easy dust stratification, ash disposal difficulty;

3, dew-point corrosion resistant ability, service life is short.As select the material of anti-dew point corrosion for use, cost is too high.

Summary of the invention

The purpose of this utility model is in order to overcome problems of the prior art, to provide a kind of enamel board-like economizer.

The board-like economizer of a kind of enamel of the present utility model, comprise flue gas flange, recirculated water flange, heat transfer core body, fishbolt nut assembly, pressure strip, described flue gas flange, recirculated water flange adopt with the heat transfer core body respectively and are welded to connect; The heat transfer core body clamps by pressure strip and fishbolt nut assembly.

Described heat transfer core body is full welded plate formula heat transfer core body, and the heat transfer core body is formed by plate pipe, the seam of spacing bar.

Described plate pipe is one by baffling bar seam in plate, plate pipe strip of paper used for sealing, the plate pipe, and plate tube outer surface enamel is handled.

Described spacing bar is 8 ~ 12 square steel, and material is carbon steel, and surperficial enamel is handled.

The utility model compared with prior art has the following advantages: heat transfer efficiency height, flow resistance are low, compact conformation, anti-dew point corrosion.

Description of drawings

Below in conjunction with the accompanying drawing explanation detailed to the specific embodiment of the present utility model.

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model heat transfer core schematic diagram.

Fig. 3 is the utility model plate tubular construction schematic diagram.

Fig. 4 is schematic flow sheet in the utility model plate pipe.

Among the figure:

1 – flue gas flange, 2 – recirculated water flanges

3 – heat transfer core bodys, 4 – fishbolt nut assemblies

5 – pressure strips, 6 – spacing bars

7 – plate pipes, 8 – plate pipe strip of paper used for sealings

Baffling bar in 9 – plates, the 10 – plate pipes

11 – gas approach, 12 – exhanst gas outlets

13 – circulating water intakes, 14 – circulating water outlets.

The specific embodiment

The board-like economizer of a kind of enamel as shown in Figure 1, comprise flue gas flange 1, recirculated water flange 2, heat transfer core body 3, fishbolt nut assembly 4, pressure strip 5, flue gas flange 1, recirculated water flange 2 adopt with heat transfer core body 3 respectively and are welded to connect; Heat transfer core body 3 clamps by pressure strip 5 and fishbolt nut assembly 4.

Heat transfer core body 3 as shown in Figure 2 is full welded plate formula heat transfer core body, and heat transfer core body 3 is formed by plate pipe 7,6 seam of spacing bar.

Plate pipe 7 as shown in Figure 3 is one by baffling bar 10 seam in plate 9, plate pipe strip of paper used for sealing 8, the plate pipe, and plate tube outer surface enamel is handled.Spacing bar 6 is 8 ~ 12 square steel, and material is carbon steel, and surperficial enamel is handled.

Form chambers by spacing bar 6 between the plate pipe 7, i.e. shell side runner, plate pipe 7 inner chambers form S shape runner, i.e. plate tube side runners by baffling bar in the plate pipe 10.Flue gas is walked the shell side runner, recirculated water limp tube side runner.The overflow section that reduces the recirculated water side is long-pending, improves flow velocity, augmentation of heat transfer efficient.Because the runner wall has carried out the enamel processing, smooth surface is difficult for dust stratification, and ash disposal simultaneously is convenient.Flue gas enters the shell side runner of heat transfer core body 3 by gas approach 11 as shown in Figure 4, from bottom to top by runner, and flows out from exhanst gas outlet 12; Recirculated water from top to bottom passes through runner by the plate tube side runner of circulating water intake 13 inflow heat transfer core bodys 3, and flows out from circulating water outlet 14.Flow direction between flue gas and the recirculated water forms the adverse current form.

Claims

1. board-like economizer of enamel, comprise flue gas flange (1), recirculated water flange (2), heat transfer core body (3), fishbolt nut assembly (4), pressure strip (5), it is characterized in that: described flue gas flange (1), recirculated water flange (2) adopt with heat transfer core body (3) respectively and are welded to connect; Heat transfer core body (3) clamps by pressure strip (5) and fishbolt nut assembly (4).

2. the board-like economizer of a kind of enamel as claimed in claim 1, it is characterized in that: described heat transfer core body (3) is full welded plate formula heat transfer core body, and heat transfer core body (3) is formed by plate pipe (7), spacing bar (6) seam.

3. the board-like economizer of a kind of enamel as claimed in claim 2 is characterized in that: described plate pipe (7) is one by baffling bar (10) seam in plate (9), plate pipe strip of paper used for sealing (8), the plate pipe, and plate tube outer surface enamel is handled.

4. the board-like economizer of a kind of enamel as claimed in claim 2, it is characterized in that: described spacing bar (6) is 8 ~ 12 square steel, and material is carbon steel, and surperficial enamel is handled.