CN2284916Y

CN2284916Y - Vertical screw water-tube boiler

Info

Publication number: CN2284916Y
Application number: CN 96247690
Authority: CN
Inventors: 李希凡
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-09
Filing date: 1996-12-09
Publication date: 1998-06-24
Anticipated expiration: 2006-12-09

Abstract

The utility model relates to a vertical spiral water pipe boiler, which is characterized in that a heat exchange body in a boiler body is a cylinder body formed by spirally winding water pipes; a plurality of cylinder bodies are sheathed to form a multi-pass smoke passage of which the head and the end are communicated. As the stroke of the fume is increased in the boiler body to increase the heat-exchange surface, the heat efficiency of the boiler is improved, and the effects of smoke elimination and dust removal are good. The water pipe structure of the utility model can improve the water outlet temperature of the boiler owing to the good compression performance, and then a hot water boiler is formed. The utility model has the advantages of simple process, steel material saving, high safety and reliability and low cost. According to the technical theory, the utility model can be made into boilers with multiple forms, and the boilers use coal, fuel oil, fuel gas, etc. The utility model is extremely suitable for medium and small users.

Description

The vertical helical water-tube boiler

Be widely used in the small scale vertical boiler in industry and the daily life at present, great majority are the pan shell type structures of prolonging with for many years.Shell structure boiler, because single face is heated, heat-exchange surface is little, and flue is short, and waste of fuel, waste are big, exhaust opening temperature height, therefore general 500-600 degree, influences the thermal efficiency of boiler, serious environment pollution.Small scale vertical boiler if obtain high temp effect, must improve pressure in addition, increases wall thickness, and to making the manufacturing process complexity, cost improves.

The purpose of this utility model is: a kind of boiler of new structure is provided, and it can improve boiler thermal output, improves temperature, and saves steel, reduces cost, and is safe and reliable.

The technical solution of the utility model is: a kind of vertical helical water-tube boiler, has body of heater, hand-hole is arranged at the body of heater top, sidewall has flue outlet, fire door is arranged at the bottom, the ash door, flue is arranged in the body of heater successively, the combustion chamber, fire grate, the ash chamber, it is characterized in that: place the inner core and the urceolus of the vertical phase suit in the body of heater flue to constitute by spiral winding pipe respectively, on flue top, gapped between the tube wall of inner core, gapped between the tube wall of flue bottom urceolus, the winding pipe of inner core and the winding pipe of urceolus, the collection case outer by body of heater is connected, boiler water inlet pipe is located at inner core winding pipe one end, and boiler discharging tube is located at urceolus winding pipe one end.

Winding pipe in the present technique combustion chamber is embedded in the furnace wall, and body of heater is made of insulation material and combination with decorative surfaces.The flue gas transit route is that fuel is after combustion chambers burn, its flame, flue gas rise, enter in the inner core flue, flue gas crosses the gap between the inner core tube wall on inner core flue top, enter the annular flue that surrounds between the inside and outside tube, descending along this passage, cross the gap between the urceolus tube wall in the flue bottom, enter the outer flue that surrounds between urceolus and the body of heater, up along this flue again, discharge by the floss hole of upper of furnace body.The water circulation line of present technique is the winding pipe of boiler feed water by inner core, discharges then to the urceolus winding pipe by the collection case.

Because the boiler of present technique, many backhauls flue ratio the long 2-3 of flue times with the common small scale vertical boiler of volume is set in body of heater, therefore not only reduced the flue outlet temperature, also make heating surface become multiaspect by single face, heating surface area has increased 2-3 doubly than originally, and has improved boiler thermal output.Because the water pipe in the combustion chamber is in water circulation stage casing, fractional cold is little again, and the combustion chamber can keep certain high ignition temperature, makes sufficient combustion, and over-emitting black exhaust has not reduced environmental pollution.Because the boiler of present technique is full water pipe structure, the diameter of water pipe is less than the diameter of prior art flue and cylindrical shell, and the bearing capacity of water pipe is greater than the bearing capacity of flue and cylindrical shell, again because, recirculated water is heated evenly at each position, and the flow velocity unanimity has been avoided local heating and produced vaporization phenomenon.The raising of bearing capacity makes the boiler of this structure, and the volume keeping original boiler does not increase steel weight, leaving water temperature reaches under the 95-150 degree condition, can guarantee the boiler safety reliability service, therefore enlarge the range of application of boiler, can be made into low-temperature hot-water boiler, high-temperature water hypothermal.Being also advantageous in that of present technique, the manufacturing process of boiler had been simplified than originally, had removed the steel plate stamping procedure from, had reduced the welding job amount, and the boiler manufacturing cost is reduced.

Below in conjunction with drawings and Examples present technique is further specified.

Fig. 1 is the structural representation of the utility model vertical helical water-tube boiler.

Fig. 2 is the A-A view of the utility model Fig. 1.

Among the figure, body of heater is made of adiabator layer (13) and surface decoration layer (14), hand-hole (10), water pipe import and export are arranged at the top of body of heater, and floss hole (4), and ash removing opening (19), fire door (22), ash door (24) are arranged at the body of heater bottom, in body of heater, between combustion chamber (20) and grey chamber (25) fire grate (23) is arranged, the characteristics of present technique are: be provided with porous chimney arch (6) on combustion chamber (20), during flame process porous chimney arch, produce high temperature and obtain second-time burning, can make the fuel after-flame.In the flue on the porous chimney arch, vertical inner core (5) and the urceolus (3) of being set with, inner core and urceolus all are the heat exchanger components of this boiler, it is closely arranged by a spiral winding pipe and constitutes, inner core and urceolus are sleeved in the flue, and flue is separated into three layers, are combustion chamber (20) below the ground floor flue (17), give the gap of staying (11) above between tube wall and communicate, form between the inside and outside barrel of second layer flue (16) with second layer flue (16) by the inner core winding pipe.The 3rd layer of flue (15), it also is the outermost layer flue, it is the space between urceolus and the body of heater, communicate with flue outlet (4) above the 3rd layer of flue (15), giving the gap of staying (18) between the tube wall below by the urceolus winding pipe communicates with second layer flue (16), three layers of flue communicate successively, constitute three backhaul flues, prolonged the stroke of flue gas in the boiler, increased the heat-exchange surface of boiler, therefore improved the thermal efficiency of boiler, the outlet exhaust gas temperature, be reduced to the 220-300 degree by original 500-600 degree, the smoke evacuation index reaches environmental requirement.The inner core winding pipe coiled water cooling tube row (8) below porous chimney arch (6) stretch to outside the body of heater then, and the middle collection case (7) outer by body of heater is connected with winding pipe one end of urceolus (3).There is sewage draining exit (9) middle collection case (7) bottom surface, and the winding pipe of urceolus (3) constitutes combustion chamber furnace wall (21) jointly with refractory brick in the combustion chamber.The feed pipe of present embodiment (12) is connected with the winding pipe of the inner core (5) of body of heater upper end, and its upper end of the winding pipe of urceolus (3) is connected successively with body of heater outlet collection case (2), outlet pipe (1) outward.Water circulation line is that feedwater enters inner core from the body of heater upper end, and is descending, and through water-cooled row, middle collection case enters outer tube bottom, rises then through the combustion chamber, discharges from the delivery port of body of heater upper end urceolus winding pipe.

Claims

1, a kind of vertical helical water-tube boiler, has body of heater, hand-hole is arranged at the body of heater top, sidewall has flue outlet, fire door is arranged at the bottom, the ash door, flue is arranged in the body of heater successively, the combustion chamber, fire grate, the ash chamber, it is characterized in that: placing the inner core and the urceolus of the vertical phase suit in the body of heater flue is respectively to be made of spiral winding pipe, on flue top, gapped between the tube wall of inner core, in the flue bottom, gapped between the tube wall of urceolus winding pipe, the winding pipe of inner core and the winding pipe of urceolus, the collection case outer by body of heater is connected, and boiler water inlet pipe is located at inner core winding pipe one end, and boiler discharging tube is located at urceolus winding pipe one end.