CN2530207Y - Circulation heat exchanging low pressure hot water boiler - Google Patents

Abstract

The utility model relates to a low pressure hot water boiler capable of circulating heat exchange, wherein the main body of the boiler is a vapor-generating boiler mounted on a stander; the upper part of the vapor-generating boiler is a condensing heat exchanger; the vapor-generating boiler has a plurality of air intake pipes and water return pipes which are respectively connected with the condensing heat exchanger to form a circulation loop; the condensing heat exchanger is provided with water inlet pipe and a water outlet pipe; the connecting pipe on the lateral wall of the upper part of the vapor-generating boiler is connected with the upper part of a barrel-shaped air collector; a deaerator is installed in the barrel-shaped air collector; deoxidizer is filled in the deaerator; the barrel-shaped air collector is fixed on the stander; a connecting pipe communicated with the middle part of the boiler is disposed in the lower part of the barrel-shaped air collector. Simply structured with a small bulk, the utility model occupies little room and is capable of excellent circulation and automatic air collection and voltage regulation; besides, the utility model is convenient and secured to use and repair, with a long service life.

Description

Cycle heat exchange low pressure hot water boiler

Affiliated field: the utility model relates to a kind of boiler, particularly a kind of cycle heat exchange low pressure hot water boiler.

Background technology: directly heat supply user in back if supply with user's hot water or heating recirculated water by boiler, be called a circulation.If add heat exchange station in the middle of boiler and the user's water, carry out indirect heating, be the hot water or the steam of boiler output, through vapor-water heat exchanger or water-to-water heat exchanger indirect user's heat water, hot water after the heat release cooling returns water tank through backwater equipment again, resupply boiler, this endless form is called two circulations.On-line equipment heat-exchanging tube bundle in the drum of boiler, heating user's heat water be called phase change vacuum boiler.The heat-supplying mode of first kind of circulation exists the harm of water quality to boiler, as oxygen corrosion, and incrustation scale, the boiler hydrodynamics poor performance, service life of boiler is short, and a series of problems such as the investment of water treatment facilities, management.It is big that second kind of two circulation heating mode exist the backwater heat loss, and heat utilization efficiency is low, and in the middle of problems such as the investment of heat transmission equipment and energy consumption.The third exists, and corresponding temperature is low under the vacuum state, heat-transfer effect is poor, evaporation of water and condensation process only hocket at the water surface in the boiler, to the configuration of heat transfer inequality, circulating effect difference and the vacuum equipment of roman boiler or in playing the stove process emptying could work, more loaded down with trivial details, comparatively difficulty of heat-exchanging tube bundle is installed in the drum of limited boiler, difficult quality guarantee, going wrong in operation is used is difficult for finding, is prone to problems such as accident and inconvenience maintenance.

Summary of the invention: the purpose of this utility model provide a kind of simple in structure, volume is little, take up an area of the space, circulation is good, gas collection voltage stabilizing automatically, maintenance easy to use, the long cycle heat exchange low pressure hot water boiler of safe operating life.The purpose of this utility model realizes by following structure: the utility model is a kind of cycle heat exchange low pressure hot water boiler, boiler body is the steam generation boiler, be installed on the frame, the top of steam generation boiler is condensing heat exchanger, many air inlet pipe of steam generation boiler and return pipe are communicated with condensing heat exchanger respectively and form a closed circuit, have water inlet pipe and outlet pipe on the condensing heat exchanger, the sidewall tube connector on steam generation boiler top is connected with cylindrical shape air collector top, the gas collection oxygen-eliminating device is installed in the cylindrical shape air collector, in the gas collection oxygen-eliminating device oxygen scavenger is housed, the cylindrical shape air collector is fixed on the frame, and cylindrical shape air collector bottom has the tube connector that is communicated with the boiler middle part.

Operation principle of the present utility model: the utility model utilizes this systemic circulatory system with boiler and heat exchanger package integrator; make the hot water circulating transfer heat in the circulation line of sealing in the boiler; hot water at first in the steam generation boiler heating evaporation become saturated vapor condensation in steam guiding tube enters condensation heat transfer pot (body heat exchanger); heat release is after circulation pipe returns the bottom of boiler; enter boiler and reheat circulation; and user's outer net water obtains heat through condensing heat exchanger; in the pot of body circulation heat transfer usefulness heat medium water and outer net moisture from; the degree of purity of water in the boiler pipe and not loss have been guaranteed; boiler is not contained oxygen and is contained the infringement of the hard water of incrustation scale; improved the conductivity of heat of boiler; the combination of heat transmission equipment and boiler is simplified overall structure; the energy loss and the equipment investment of middle heat exchange station and condensate return equipment have been removed from; thereby saved heat; can improve effect; the condensation heat transfer pot adopt advanced bellows heat transfer technology have the high and non-scaling of heat transfer efficiency from energy-conservation power; be arranged on the boiler drum outside and be convenient to installation and maintenance and operation; the automatic gas collection pressurizer that is arranged on the boiler plays the adjustment water level; the deoxygenation protection; the assurance boiler is being worked in certain low pressure range, and the utility model has overcome the ability of the various shortcomings in the conventional boiler heat supply.

Description of drawings:

Fig. 1 is the utility model structural front view

Fig. 2 is the left view of Fig. 1

The specific embodiment:

Embodiment:

The utility model as shown in Figure 1 is a kind of cycle heat exchange low pressure hot water boiler, boiler body is a steam generation boiler 1, be installed on the frame 2, as shown in Figure 2, the top of steam generation boiler 1 is condensing heat exchanger 3, the many air inlet pipe 4 of steam generation boiler 1 and return pipe 5 are communicated with closed circuit of formation respectively with condensing heat exchanger 3, return pipe 5 is positioned at boiler bottom with the boiler tie point, return pipe 5 is connected with boiler furnace, have water inlet pipe 6 and outlet pipe 7 on the condensing heat exchanger 3, the sidewall tube connector 8 on steam generation boiler 1 top is connected with cylindrical shape air collector 9 tops, gas collection oxygen-eliminating device 10 is installed in the cylindrical shape air collector 9, in the gas collection oxygen-eliminating device 10 oxygen scavenger is housed, cylindrical shape air collector 9 is fixed on the frame 2, and cylindrical shape air collector 9 bottoms have the tube connector 11 that is communicated with the boiler middle part.The utility model device structure is simple, and it is little to take up room, and cost of investment is low.Owing to cancelled middle heat exchange station and boiler water treatment equipment, reduced the power consumption and the operational and administrative expenses with various device of taking of the equipment investment and the device space.The utility model is provided with the middle loss of various heats, has improved heat utilization efficiency.As: 1 cover heating load is the 1.05MW heating equipment, and the condensed water heat loss of returning through heat exchange station can reach the 5-10% of boiler output.The heat loss of every row's boiler grate just accounts for the 4-5% of boiler output, and the working medium loss also will be arranged, and only these two losses are just very big.The utility model does not have scale resistance, because the recirculated water of boiler internal is pure, does not have incrustation scale, and being heated faces the wall and meditates has not had the thermal resistance of incrustation scale in the diabatic process, and average per 1 millimeter incrustation scale just can make the efficient reduction 1-3% of boiler.The utility model oxygenless corrosion, heat medium water does not contain dissolved oxygen in the pure boiler, just there be not the corrosion of oxygen to boiler inner wall yet, as a boiler that adopts the systemic circulation heat supply, particularly directly for the boiler of life with hot water, because oxygen corrosion causes the corrosion of boiler inner wall, attenuate just can not use after several years, and the boiler of oxygenless corrosion and life-span can reach more than the more than ten years, the existence of incrustation scale reduces the boiler effect except hindering to conduct heat, the heating surface wall temperature is increased, compressive resistance reduces, even burnt out and produce the serious like this security incident of booster, because boiler of the present utility model scaling not, this point is very big in the meaning to boiler on the safety and on service life.The operating condition of boiler is good, has improved the thermal efficiency of boiler.Wearing hot water circuit in boiler hearth temperature field and the stove all improves, dust stratification thermal resistance and back-end surfaces cold end corrosion on the heating surface have been reduced, because boiler and outer net adopt the starting time of branch's combined-circulation once-through boiler short, can promptly make boiler reach normal heat supply state, reduced the loss of low temperature slow start, made operating condition reach the efficient operation state.More than be advantages more of the present utility model, it has had both in the past that the advantage of heating equipment has overcome shortcoming and defect again.

Claims (2)

1, a kind of cycle heat exchange low pressure hot water boiler, boiler body is steam generation boiler (1), be installed on the frame (2), it is characterized in that: the top of steam generation boiler (1) is condensing heat exchanger (3), the many air inlet pipe (4) of steam generation boiler (1) and return pipe (5) are communicated with closed circuit of formation respectively with condensing heat exchanger (3), return pipe (5) is positioned at boiler bottom with the boiler tie point, return pipe (5) is connected with boiler furnace, have water inlet pipe (6) and outlet pipe (7) on the condensing heat exchanger (3), the sidewall tube connector (8) on steam generation boiler (1) top is connected with cylindrical shape air collector (9) top, gas collection oxygen-eliminating device (10) is installed in the cylindrical shape air collector (9), the gas collection oxygen-eliminating device is equipped with oxygen scavenger in (10), cylindrical shape air collector (9) is fixed on the frame (2), and cylindrical shape air collector (9) bottom has the tube connector (11) that is communicated with the boiler middle part.

2, a kind of cycle heat exchange low pressure hot water boiler according to claim 1, it is characterized in that: condensing heat exchanger is a shell-and-tube steam and water heat exchanger, is made of shell and stainless steel ripple heat-exchanging tube bundle and annex.