CN2284347Y

CN2284347Y - Verticle dual-chamber fuel/gas boiler

Info

Publication number: CN2284347Y
Application number: CN 96224129
Authority: CN
Inventors: 李正安
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-29
Filing date: 1996-11-29
Publication date: 1998-06-17
Anticipated expiration: 2006-11-29

Abstract

The utility model provides a vertical fuel and gas boiler with double container, comprising a boiler shell, a vertical pipe which is arranged on the top of the boiler shell, an outer container, an inner container, a boiler hearth and a burner which are arranged in the boiler shell. The inner container is sheathed in the outer container. A fume guide passage is arranged between the wall surfaces of the outer container and the inner container. The lower end of the fume guide passage is provided with a fume inlet which is communicated with the boiler hearth, and the upper end of the fume guide passage is provided with a fume outlet which is communicated with the vertical pipe. The utility model utilizes the fume guide passage to cause the fume to form the turbulent flow to flow in the fume guide passage, causes the high-heat particle of the fume to be continuously changed into the peripheral particle of the fume, carries out the heat exchange with the boiler wall, and improves the heat efficiency of the boiler. The utility model can replace the existing fuel and gas boiler.

Description

The vertical oil-burning gas-fired boiler of two courages

The utility model relates to a kind of pair of vertical pot of courage to be protected.

Existing pair of courage vertical boiler, mainly by shell, be located at the flue in the shell and be socketed in hanging courage and being located at the burner hearth that hangs the courage below and constituted in the flue with what pipeline was communicated with.The deficiency of this boiler is that the high-temperature flue gas that its burner hearth burning produces is partly to be its import and export with the whole annular space that hangs between courage and the flue, high-temperature flue gas in the annular space that hangs between courage and flue nexine stream shape motion state with hang courage and furnace wall and touch rising mutually, and the flow velocity of convection heating surface is low, heat transfer coefficient is little, flue gas flow is short, exhaust gas temperature is high, heat-energy losses is big, has reduced the thermal efficiency of boiler.For improving the thermal efficiency of boiler, most improvement project all is how to make fuel be able to fully burning in stove to emit and design aspect the heat energy, as Chinese patent CN2103091U disclosed " vertical energy-saving smoke abatement and dust control steam-water dual-purpose stove ", its improvement project be protect the courage wall around three air blast beaks that several have certain angle and direction are set, utilize these three air-supply structures to make its top form the oxygen-enriched air film, make unburnt fuel gas fully be burnt heat release to improve the thermal efficiency of boiler in burning.In the face of changing the flow regime of flue gas, make heat be able to high efficient heat exchanging and do not see open with the improvement project of the thermal efficiency of further raising boiler as yet.

The purpose of this utility model provides the vertical oil-burning gas-fired boiler of two courages that the motion of turbulent shape and energy-conservation, the high heat of furnace wall contact heat-exchanging are imitated in a kind of flue gas.

The purpose of this utility model is to realize by this technical scheme of flue gas flow-guiding channel is set in the annular space between inside of boiler and outer wall.Its formation comprises shell, is located at the impact tube at shell top, is located at outer courage, inner bag, burner hearth and burner in the shell, inner bag overlaps outside in the middle of the courage, be provided with a flue gas flow-guiding channel outside between the wall of courage and inner bag, the lower end of this passage has a gas approach that communicates with burner hearth, and the upper end has an exhanst gas outlet that communicates with impact tube.The high-temperature flue gas that the burner hearth internal combustion produces during work enters the flue gas flow-guiding channel from the gas approach of lower end, in the motion process of flue gas in the flue gas flow-guiding channel, constantly change the direction of motion, making flue gas form turbulent shape flows, the high caloic point that is in the flue gas of turbulent exterior rim touches with furnace wall and carries out being with from wall again after the heat exchange at once, particle and furnace wall that the former high caloic point that is in the turbulent flow middle part becomes turbulent exterior rim again touch heat exchange, make the exothermic coefficient of flue gas improve, strengthened heat transfer, exhaust gas temperature is descended.Simultaneously, the flue gas flow-guiding channel has also increased the flow process of flue gas, can make also that institute's accumulation of heat can fully discharge in the flue gas, improves the thermal efficiency of boiler.

The import of described flue gas flow-guiding channel can be located at burner the flame export place directly over the position, the place ahead of going back to burner hearth from the flame of burner ejection behind the rear wall that bumps under the kinetic energy effect at burner hearth again enters the flue gas flow-guiding channel, make flame at burner hearth " ζ " font burning inside shape, increased the length of flame, prolonged the flame combustion time, fire smoke gases is produced in burner hearth to reflux and vortex, fuel and Air mixing have been strengthened, sufficient combustion, reduce incomplete combustion loss, improved the efficiency of combustion of boiler.

Described flue gas flow-guiding channel can be selected various versions, constitute a screw-like exhaust gases passes as welding a helical form irony dividing plate simply outside the tank between wall and the outer courage inwall, also can be designed to horizontal type labyrinth-like passage as horizontal, flue gas enters the middle level from the opening of lower floor, enters the upper strata from opening rear-end opening again in the middle level behind wall of inner container one circle.So circulation comes out to enter the impact tube discharge from the exhanst gas outlet of top layer at last.Can also be designed to the version of vertical labyrinth-like, all can play change smoke movement situation, prolong smoke flow process and holdup time, strengthen the effect of heat exchange.

The utility model is compared with existing like product, and it is long to have a flue gas flow, the heat transfer coefficient height of the convection heating surface of boiler tail, the advantage that exhaust gas temperature is low, the thermal efficiency is high.Simple in structure being easy to do simultaneously transformed a little existing pair of courage vertical boiler and to be got final product.

Provide embodiment below in conjunction with accompanying drawing:

Fig. 1 structural representation of the present utility model

The formation schematic diagram of Fig. 2 screw-like exhaust gases passes

The formation schematic diagram of Fig. 3 horizontal type labyrinth-like exhaust gases passes

The vertical formation schematic diagram of stating the palace exhaust gases passes of Fig. 4

As shown in Figure 1, formation of the present utility model comprises shell 1, impact tube 2, outer courage 3, inner bag 4, burner hearth 5, burner 6 and base 7, and the version that each several part all can be continued to use existing pair of courage vertical boiler constitutes.The flue gas flow-guiding channel that is located between outer courage 3 and the inner bag 4 is a kind of screw-like exhaust gases passes in the present embodiment, can be constituted by a ring shaped thread shape iron plate 9 that is welded between outer courage inwall and the inner bladder outer wall simply, referring to Fig. 2, its lower ending opening 10 is a gas approach, be located at burner 6 the flame export place directly over the position.On be terminated at the inner bag top, its exhanst gas outlet 11 communicates with impact tube 2.The screw-like exhaust gases passes can be a clockwise direction, also can be counter-clockwise direction.

The flue gas flow-guiding channel also can adopt horizontal type labyrinth-like version as shown in Figure 3, its upper end that is connected between inner bladder outer wall and the outer courage inwall by a setting connects dividing plate, the dividing plate 12 of following termination lower clapboard and the annular plate that has a breach of several piece horizontal 14 constitute, the opening of each layer annular plate is as scheming arrangement straggly, flue gas enters from the breach 15 of the ground floor annular plate of lower end, operation clockwise in ground floor, enter the second layer from the breach 16 of second layer annular plate, inhour operation in the second layer, by that analogy, coming out to enter impact tube from the breach 17 of the superiors at last discharges.

The flue gas flow-guiding channel can also adopt the vertical version of stating the palace shape as shown in Figure 4, by the upper spacer 18 that is located at inner bag top and bottom, lower clapboard 19, its upper end that vertically is located between outer courage 3 and the inner bag 4 joins with upper spacer, the whole baffle 20 that lower end and lower clapboard join, its vertical partition 21 that highly is lower than the inner bag height of several piece constitutes, one end of each piece vertical partition is alternate to be connected to respectively in regular turn mutually, lower clapboard, the import 23 of flue gas is located on the lower clapboard 19, exhanst gas outlet 24 is located on the upper spacer 18, and is positioned at the another side with respect to gas approach 23 of whole baffle 20.

Claims

1, the vertical oil-burning gas-fired boiler of two courages, comprise shell, the impact tube at shell top is set, be located at outer courage, inner bag, burner hearth and burner in the shell, inner bag overlaps outside in the middle of the courage, it is characterized in that being provided with a flue gas flow-guiding channel between the wall of described outer courage and inner bag, the lower end of this flow-guiding channel has a gas approach that communicates with burner hearth, and the upper end has an exhanst gas outlet that communicates with impact tube.

2, as claimed in claim 1 pair of courage oil-burning gas-fired boiler, the import that it is characterized in that described exhaust gases passes be located at the burner flame outlet directly over the position.

3, as claimed in claim 1 pair of vertical oil-burning gas-fired boiler of courage is characterized in that described flue gas flow-guiding channel is for to be arranged on the screw-like flue gas flow-guiding channel that the screw-like dividing plate between outer courage inwall and the inner bladder outer wall is constituted by one.

4, as claimed in claim 1 pair of vertical oil-burning gas-fired boiler of courage is characterized in that described flue gas flow-guiding channel is for being erected in the dividing plate between outer courage inwall and the inner bladder outer wall and the horizontal type labyrinth-like flue gas flow-guiding channel that annular plate constituted that has a breach of several piece horizontal by one.

5, as claimed in claim 1 pair of vertical oil-burning gas-fired boiler of courage, it is characterized in that described flue gas flow-guiding channel is vertical labyrinth-like exhaust gases passes, by the whole baffle that the upper and lower dividing plate that is located at inner bag top and bottom, are located at vertically that its upper end between outer courage inwall and the inner bladder outer wall joins with upper spacer, lower end and lower clapboard join, its vertical partition that highly is lower than the inner bag height of several piece constitutes, one end of described each vertical partition is connected to upper and lower dividing plate in regular turn respectively mutually, and the import and export branch of flue gas is located at the both sides of whole baffle.