CN2387389Y

CN2387389Y - Multiple tubulation arranged through-flow boiler

Info

Publication number: CN2387389Y
Application number: CN 99229135
Authority: CN
Inventors: 汪学舜; 王鹏南; 雷钦祥
Original assignee: Jiangsu Shuangliang Boiler Co Ltd
Current assignee: Jiangsu Shuangliang Science &. Technology Co., Ltd.
Priority date: 1999-08-12
Filing date: 1999-08-12
Publication date: 2000-07-12
Anticipated expiration: 2009-08-12

Abstract

The utility model relates to a through-flow boiler with vertical type water pipes, which comprises a main body of the boiler, wherein, an inner and an outer rings of pipe arrays are arranged in the main body; each two adjacent pipe walls of the two circles of the pipe arrays are welded together by flat steel, or naturally and closely ranged together; at least one ring of pipe array is arranged between the inner and the outer rings of pipe arrays, and a gap is arranged between each two pipe walls of the circle of the pipe array. The utility model effectively enhances heating surface of the boiler, simplifies manufacture technology, and enhances performance of the boiler.

Description

The through-flow boiler that multiple tubulation is arranged

The utility model relates to a kind of vertical water pipe through-flow boiler.

Traditional through-flow boiler structure as shown in Figure 1, it mainly by upper collecting chamber 1, next part case 2 and through two circle tubulations 3 of 2 of upper collecting chambers 1, next part case around forming.The inboard of inner ring tubulation 3 constitutes burner hearth, and the convection cell that two circle tubulations 3 surround constitutes convection heating surface, forms flue gas after fuel burns in burner hearth, discharges boiler body 4 behind the convection cell heat convection that two circle tubulations 3 surround, and enters economizer.

But the arrangement of two traditional circle tubulations 3, heating surface is less, need the also corresponding increase of heating surface area of boiler along with the increase of boiler capacity, increasing boiler heating surface method commonly used is the height that increases boiler tubes 3, can increase the volume of boiler body like this, perhaps strengthens boiler tubes 3 circle diameter of a circles, or on boiler tubes 3 a large amount of fins 5 of welding increasing heating surface area and to add strong disturbance, thereby reach the effect that increases heat transfer area and augmentation of heat transfer.As Fig. 2, shown in Figure 3, welding with band steel 6 between each tube wall of two circle tubulations 3 is one, or closely arranges naturally, to guarantee sealing, in order to increase heating surface, on the tube wall of two each pipe 3 of circle, be welded with a plurality of fins 5, then labour intensity is big, waste time and energy, need special equipment, and solder joint is many, the weldering amount is big, fragile boiler tube tube wall causes waste.

The purpose of this utility model is exactly in order to address the above problem, and provides a kind of volume little, produces easily the through-flow boiler that the multiple tubulation that heat-transfer effect is good is arranged.

Technical solution of the present utility model:

The through-flow boiler that a kind of multiple tubulation is arranged, it includes boiler body, be provided with inside and outside two circle tubulations in the body, between each adjacent tube wall of this two circles tubulation or with band steel weldering is one, or closely be arranged in together naturally, it is characterized in that between inside and outside two circle tubulations, being provided with a circle tubulation at least, and all leave spacing between each tube wall of this circle tubulation.

The utility model has changed the stringing mode of domestic and international routine, when the through-flow boiler of design larger capacity, change the way of a large amount of fins of former welding, determine the height and the boiler tube subloop diameter of a circle of boiler tubes according to combustion flame, in the middle of two circle tubulations, add a circle tubulation, and without the band steel welding, first flue gas transversal flow bank of staggered pipes is arranged in three circle pipe stagger arrangement between middle pipeloop.The arrangement of three circle tubulations is compared with traditional welding fin, and the advantage of following several respects is arranged:

1. being arranged in of three circle tubulations made the workload that goes up it and avoided welding a large amount of fin increases, saved special-purpose fin welding machine, tube sheet welding generalization, and simplified manufacturing technique has improved operating efficiency.

2. increase identical heating surface, heat-transfer effect is better than fin, and has good flue gas disturbance function, augmentation of heat transfer.

3. avoided on boiler tube, welding the possibility of a large amount of fins to damaged tubular.

4. because increasing relatively of heating surface pipe reduced the incrustation scale adhesion amount of unit are, prolonged tube life-span.

5. the thermic load that has strengthened the Internal and external cycle pipe is poor, makes that the temperature difference of water strengthens in the boiler Internal and external cycle pipe, helps the water circulation of boiler, the service life of prolonged boiler pipe.It has, and volume is little, and water capacity is few, starts characteristics such as fast, is applicable to steam boiler and hot-water boiler.

Fig. 1 is the overall structure schematic diagram of existing through-flow boiler;

Fig. 2 is the arrangement figure of inside and outside circle tubulation in the existing through-flow boiler;

Fig. 3 is the local enlarged diagram of Fig. 2.

Fig. 4 is the arrangement figure of multiple tubulation in the utility model through-flow boiler;

Fig. 5 is the local structure for amplifying schematic diagram of Fig. 4.

Profile of the present utility model is identical with Fig. 1, the arrangement (direction of arrow is the flow of flue gas direction) shown in Fig. 4,5 of multiple tubulation in it.The utility model includes boiler body 4, be provided with inside and outside two circle tubulations 3 in the body 4, between each adjacent tube wall of this two circles tubulation 3 or to weld with band steel 6 be one, or closely be arranged in together naturally, characteristics of the present utility model are to be provided with a circle tubulation 7 at least between inside and outside two circle tubulations 3, and all leave spacing between each tube wall of this circle tubulation 7.

Can only be provided with a circle tubulation 7 (or adding a few circle tubulations as required) in the middle of the above-mentioned inside and outside two circle tubulations 3, this circle tubulation 7 respectively manage the best and inside and outside circle tubulation 3 corresponding stagger arrangement layouts of respectively managing.Because without band steel 6 welding, three circle tubulations respectively enclose stagger arrangement and arrange that first flue gas transversal flow bank of staggered pipes is discharged boiler behind the convection cell heat convection between middle tubulation 7 adjacent pipe.This arrangement has increased the heating surface of boiler effectively, has simplified manufacturing process, has improved the performance of boiler.

Claims

1, a kind of through-flow boiler of multiple tubulation layout, it includes boiler body, be provided with inside and outside two circle tubulations in the body, between each adjacent tube wall of this two circles tubulation or with band steel weldering is one, or closely be arranged in together naturally, it is characterized in that between inside and outside two circle tubulations, being provided with a circle tubulation at least, and all leave spacing between each tube wall of this circle tubulation.

2, the through-flow boiler of arranging by the described multiple tubulation of claim 1 is characterized in that the correspondence of the inside and outside circle tubulation of each Guan Yingyu of the circle tubulation between the inside and outside two circle tubulations is respectively managed the stagger arrangement layout.