CN200986317Y - Vertical normal pressure hot-water boiler multiple pipe three return-stroke structure - Google Patents

Abstract

A vertical normal-pressure hot-water boiler multi-tube three-pass structure is characterized in that a plurality of smoke tubes are arranged inside the boiler vessel and are divided into three layers along the axial direction, a baffle plate is arranged on the upper part of the smoke tubes and separates two inner layers of the smoke tubes from the outer layer of smoke tube, the baffle plate is provided with a seal cover plate; a ring dust-accumulation passage is arranged at the lower part of the smoke tubes, the lower end of the most inner layer of the smoke tubes is communicated with a hearth a middle hole of the ring dust-accumulation passage, the lower end of the middle layer and the outer layer of smoke tubes is communicated with the ring dust-accumulation passage, the upper end of the external layer of the smoke tubes is communicated with a smoke accumulation chamber, and the smoke accumulation chamber is communicated with a blast tube. The structure of multi-tube design and three-pass exhaustion of the smoke and air not only enlarge the heated area and increase the heating efficiency, but also purify the hot smoke-air to reduce the pollution; tested by the environment protection department, the exhaustion of the smoke attains below the first level of Ringelmen number. The utility model enables the boiler to quickly boil the hot water, which is capable of outputting qualified hot water within two to four minutes after the ignition through a plurality of experiments.

Description

Vertical normal-pressure hot-water boiler multitube three return structures

One, technical field

The utility model relates to a kind of vertical normal-pressure hot-water boiler that has multitube three return structures.

Two, background technology

Vertical normal-pressure hot-water boiler is widely used in life (as heating, shower etc.), township enterprise's (as feed, agricultural product drying etc.) and bathing industry etc.Existing vertical normal-pressure hot-water boiler is many to be made up of flue, drum and impact tube.The flue gas that carries heat energy directly washes away furnace wall, by impact tube, enters atmosphere.The boiler smoke flow process of this structure is single, and heating surface is few, waste fuel, and the thermal efficiency is low, and fume emission is not up to standard, has prohibited the boiler that uses this structure in a lot of cities.In order to change the status quo, a lot of producers have in flue has added horizontal water tube, and what have has added curved water pipe, but does not tackle the problem at its root.

Three, summary of the invention

The technical problems to be solved in the utility model is: design a kind of multitube three return structures that are used for vertical normal-pressure hot-water boiler, this structure is used for vertical normal-pressure hot-water boiler, can effectively overcome the problem that prior art exists.

The technical scheme that solution the utility model technical problem is taked is: many smoke pipes are set in drum, distribute along circumferential array, radially be divided into three layers successively; A cylindrical shape smoke bending plate is located at the top of smoke pipe, and the two-layer smoke pipe of the inside and one deck smoke pipe of outside are kept apart, and a seal cover board is arranged above the cylindrical shape smoke bending plate; An annular collection grey-way is arranged in the smoke pipe bottom, and innermost one deck smoke pipe lower end is passed on the tube sheet that annular collection grey-way is connected boiler drum bottom and with burner hearth and is connected; Middle one deck smoke pipe and one deck smoke pipe lower end of outside are connected with annular collection grey-way, and one deck smoke pipe upper end of outside is connected with fume collecting chamber, and fume collecting chamber is communicated with impact tube.

Good effect of the present utility model is: compact conformation, and the occupation of land space is little; The multitube design, the smoke three-pass discharging has not only increased heating surface, has improved the thermal efficiency, and has purified hot flue gas, has reduced pollution, and through environmental administration's test, fume emission has reached below the Lin Geman one-level.By calculating and test, heating surface has increased by 11.8%, fuel savings 10.5%, and the thermal efficiency improves about 10%; It is fast to go out hot water, by test of many times, lights a fire 2-4 minute, just can export hot water up to standard.

Four, description of drawings

Accompanying drawing is a structural representation of the present utility model.

Five, the specific embodiment

The specific embodiment of the present utility model is provided with many smoke pipes 5,6,7 as shown in drawings in drum 8, distribute along circumferential array, radially is divided into three layers successively; A cylindrical shape smoke bending plate 4 is located at the top of smoke pipe, and the two- layer smoke pipe 5,6 of the inside and one deck smoke pipe 7 of outside are kept apart, and a seal cover board 2 is arranged above the cylindrical shape smoke bending plate 4, and seal cover board 2 can be connected on the cylindrical shape smoke bending plate 4 with flange 3; In the smoke pipe bottom annular collection grey-way 10 is arranged, innermost one deck smoke pipe 5 lower ends are passed annular collection grey-way 10 and are connected on the tube sheet of drum 8 bottoms, and are connected with burner hearth 9; Middle one deck smoke pipe 6 and one deck smoke pipe 7 lower ends of outside are connected with annular collection grey-way 10, and one deck smoke pipe 7 upper ends of outside are connected with fume collecting chamber 11, and fume collecting chamber 11 is communicated with impact tube 1.

Operation principle of the present utility model and using method are: the hot flue gas that comes out from burner hearth 9, entering innermost one deck smoke pipe 5 (comprising central tube) rises, arrive the smoke pipe top, by 4 interceptions of cylindrical shape smoke bending plate, make hot flue gas reverse flow, descending along middle one deck smoke pipe 6, enter annular collection grey-way 10, dilatation rapidly, flow velocity slows down, because the dust that hot flue gas carries has certain severe, the dust major part obtains sedimentation in annular collection grey-way 10, the hot flue gas after the purification, rise along outmost one deck smoke pipe 7, arrive fume collecting chamber 11, flue gas is further dilatation again, sedimentation, purify, enter chimney from impact tube 1 at last.On the drum of annular collection grey-way 11 correspondences, be provided with ash removing opening, open ash removing opening after the blowing out and just dust can be removed.

Claims (1)

1, a kind of vertical normal-pressure hot-water boiler multitube three return structures is characterized in that: in drum (8) many smoke pipes are set, distribute along circumferential array, radially be divided into three layers successively; A cylindrical shape smoke bending plate (4) is located at the top of smoke pipe, and the two-layer smoke pipe (5,6) of the inside is kept apart with one deck smoke pipe (7) of outside, is provided with a seal cover board (2) above the cylindrical shape smoke bending plate (4); An annular collection grey-way (10) is arranged in the smoke pipe bottom, innermost one deck smoke pipe (5) lower end is passed on the tube sheet that annular collection grey-way (10) is connected drum (8) bottom, and be connected with burner hearth (9), middle one deck smoke pipe (6) and one deck smoke pipe (7) lower end of outside are connected with annular collection grey-way (10), one deck smoke pipe (7) upper end of outside is connected with fume collecting chamber (11), and fume collecting chamber (11) is communicated with impact tube (1).

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