CN2282123Y

CN2282123Y - Ring gas flow vertical gas burning boiler

Info

Publication number: CN2282123Y
Application number: CN 96245471
Authority: CN
Inventors: 郝玉福; 苏俊林; 王震坤; 许思传
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-04
Filing date: 1996-11-04
Publication date: 1998-05-20
Anticipated expiration: 2006-11-04

Abstract

The utility model relates to a novel ring gas flow vertical gas burning boiler, mainly composed of a combustion apparatus, a boiler furnace, a water container surrounding the boiler furnace, a lamp tube, a heat exchange tube inserted into a smoke tube, etc. The smoke tube is arranged in the water container surrounding the boiler furnace. The smoke tube forms a definite annular slot with the heat exchange tube which can be a water tube or a heat tube. High temperature fume enters the annular slot between the smoke tube and the heat exchange tube from the lower part through the boiler furnace and flows out upwards. Therefore, the utility model has the advantages of larger heat-exchange surface, compact structure of the boiler body, small outline, higher heat efficiency and wide range of application.

Description

Annular space flows vertical gas fired-boiler

The utility model relates to a kind of novel vertical gas fired-boiler.The primary structure form of existing vertical gas fired-boiler is the flue type.The high-temperature flue gas that to be combustion gas produce in the combustion chamber internal combustion, by wash away flue (inner bag or outer courage) and on spoiler, thereby the realization exchange heat.The major defect of this structure is: (1) heat transfer property is poor, and structure is not compact, and boiler thermal output is low; (2) metal consumption is big, and appearance and size is big.Available data shows, vertical combustion gas steam boiler evaporation capacity is nearly all (hot-water boiler has below the 0.7MW) below the 1t/h, thereby limited the development of vertical boiler.Along with being extensive use of of natural gas, coal gas, the consumption of gas fired-boiler is increasing, and wide application prospect is arranged, thereby an urgent demand is transformed existing gas fired-boiler, to satisfy the demand in market.

The purpose of this utility model is to overcome existing vertical gas fired-boiler above shortcomings, and a kind of compact conformation is provided, and the annular space that the thermal efficiency is high flows vertical gas fired-boiler.

Realize that above-mentioned purpose technical scheme accompanying drawings is as follows: this annular space flows vertical gas fired-boiler and mainly is made up of burner 1. flues and annular space heat-transfer surface, burner 1 places the top of flue 2, in the water receptacle around the flue 2, arrange many smoke pipes 5, interior heat exchanger tube 4,

heat exchanger tube

4 and 5 looping slits of the smoke pipe flue of inserting of the smoke pipe of taking root.

Water receptacle place in smoke pipe 5 upper ends can be provided with top down-comer 3, is provided with bottom down-comer 6 in the water receptacle lower end.

Flow in the vertical gas fired-boiler at above-mentioned annular space, said heat exchanger tube 4 can adopt water pipe or heat pipe, if adopt water pipe, its two ends communicate with the top and the next part case of water receptacle respectively.If adopt heat pipe then can save bottom down-comer and next part case.

For augmentation of heat transfer, smoke pipe 5, heat exchanger tube 4 can adopt enhancements such as screwed pipe.

Operation principle of the present utility model is: the high-temperature flue gas that combustion gas produces through burner 1 burning, inner chamber through flue 2, entered in the smoke pipe 5 that is arranged in its ambient water container by the bottom, the quantity of smoke pipe 5 and size can be selected according to the needs of heat exchange amount, can be arranged to single row or multiple rows.Owing to all insert heat exchanger tube 4 in every smoke pipe 5, meeting the crack that flue gas can only form between heat exchanger tube 4 and smoke pipe 5 upwards flowed, and high-temperature flue gas flows through the strong cooling that is subjected to from the tube wall of both sides from annular space, thereby reaches the heat exchange purpose.

The effect of such scheme is: can arrange the area that changes much larger than existing vertical gas fired-boiler in same space, when improving flue gas flow rate, needn't increase under the prerequisite of pipe range or flue gas flow number, obtain higher heat exchange area, thereby making the compact conformation of boiler, appearance and size is little.Thereby make the Boiler Metallic consumption little.The thermal efficiency is higher, and this boiler is applied widely, applicable to steam oven 0.05～10t/h evaporation capacity; Water heater (0.035～7MW), be suitable for pressure＜1.27MPa

Fig. 1 is that evaporation capacity is the structure diagram that the annular space of 2t/h flows vertical combustion and steam boiler; Fig. 2 is the schematic diagram that smoke pipe and water pipe are combined into annular space; Fig. 3 is Fig. 2 A-A cutaway view; Fig. 4 is the schematic diagram that heat pipe and smoke pipe are combined into annular space.1 is burner among the figure, and 2 is flue, and burner places the flue top, and 3 is the down-comer of upper water container, and it can be a plurality of in the flue arranged around.The 4th, insert the water pipe in the smoke pipe 5, should keep certain interval between it and smoke pipe inwall, promptly as annular space shown in Figure 3.Smoke pipe is arranged in the flue water receptacle on every side, and it can a row or multi-rowly be arranged.The 6th, the down-comer of water receptacle bottom, and connect next part case 7.The 8th, heat pipe if adopt heat pipe to substitute water pipe, will make boiler structure compacter, and the thermal efficiency is higher.

Steam oven with 2t/h evaporation capacity shown in Figure 1 is an example, and its design major parameter is:

Rated capacity: 2t/h; Saturated vapour pressure: 0.7MPa;

Saturated-steam temperature: 170.4 ℃; Design fuel: natural gas; Fuel Consumption: 161.9Nm ³/ h; Design thermal efficiency: 88%; Exhaust gas temperature: 230 ℃; Heat exchange area: radiation is 6.506m ², convection current is 52.7m ²Weight metal: 3620kg appearance and size (length * wide * height) 2.0 * 2.0 * 3.7m.

Claims

1. an annular space of mainly being made up of burner (1) and flue (2) and annular space heat-transfer surface flows vertical gas fired-boiler, it is characterized in that burner (1) places the top of flue (2), in flue (2) water receptacle on every side, arrange many smoke pipes (5), insert heat exchanger tube (4) in the every smoke pipe, looping meets the crack flue between heat exchanger tube (4) and smoke pipe (5).

2. flow vertical gas fired-boiler by the described annular space of claim 1, it is characterized in that being provided with top down-comer (3), be provided with bottom down-comer (6) in the water receptacle lower end at the water receptacle place of smoke pipe (5) upper end.

3. flow vertical gas fired-boiler by claim 1 or 2 described annular spaces, it is characterized in that said heat exchanger tube (4) can be water pipe or heat pipe, if adopt water pipe, its two ends communicate with the top and the next part case (7) of water receptacle respectively, if adopt heat pipe then can save bottom down-comer and next part case.

4. flow vertical gas fired-boiler by the described annular space of claim 1, it is characterized in that smoke pipe (5), heat exchanger tube (4) can adopt screwed pipe.