CN207455897U - Three backhaul horizontal internal combustion boilers of spherical shell cover are provided on flue - Google Patents
Three backhaul horizontal internal combustion boilers of spherical shell cover are provided on flue Download PDFInfo
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- CN207455897U CN207455897U CN201820169032.8U CN201820169032U CN207455897U CN 207455897 U CN207455897 U CN 207455897U CN 201820169032 U CN201820169032 U CN 201820169032U CN 207455897 U CN207455897 U CN 207455897U
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- boiler
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- shell cover
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Abstract
The utility model discloses the three backhaul horizontal internal combustion boilers that spherical shell cover is provided on a kind of flue, spherical shell cover is provided on the liner of the boiler, two return smoke pipe is directly welded on the spherical shell cover, so as to eliminate return combustion chamber, internal and external threads are provided in a part of pipeline section of the two return smoke pipe, so as to improve flue gas flow rate, and resistance can be controlled so that the resistance in pipeline does not exceed limit value；There can also be better stress state, avoid the generation of tube-plate fracture, while such design under the same conditions can arrange more three backhauls smoke pipes, for steam boiler, such design may be such that highest pyrosphere is lower, improve steam quality.The utility model structure and manufacturing process are relatively easy, and characteristics of compact layout is easy to maintain.
Description
Technical field
The utility model is related to Industrial Boiler Technology fields, and in particular to a kind of hot water for being mainly used for burning natural gas is adopted
Three backhaul horizontal internal combustion boilers of spherical shell cover are provided in heating system on flue.
Background technology
Existing gas-fired water heating boiler is generally traditional Horizontal chamber and fires three stroke wet-back structures, is provided with return combustion chamber, and
Building volume of strile-bacing is larger, consider further that breathing the factors such as room and return combustion chamber cylinder thickness, cause three backhaul smoke pipes arrangement quantity by
Limit, and return combustion chamber front tube sheet is generally flat tube sheet or Arched Tube Plate, it is easy to crack and such with two return smoke pipe junction tube sheet
Often volume is larger for design, and manufacture is complicated, manufactures cost and operating cost is larger, so many colleagues are in Improvement boiler
Whole arrangement form, it is desirable to be able to return combustion chamber is dispensed, but final measured result is all not ideal enough, after removing return combustion chamber
Flow velocity of the flue gas in two return smoke pipe declines, and exchange capability of heat reduces, and ultimately resulting in the whole thermal efficiency reduces.
For these reasons, the present inventor furthers investigate existing three backhauls horizontal internal combustion boiler, to expect to set
Count out a kind of internally fired boiler that can be solved the above problems.
Utility model content
In order to overcome the above problem, present inventor has performed sharp studies, design and ball-type envelope is provided on a kind of flue
Three backhaul horizontal internal combustion boilers of head are provided with spherical shell cover on the liner of the boiler, are directly welded on the spherical shell cover
There is two return smoke pipe, so as to eliminate return combustion chamber, internal and external threads are provided in a part of pipeline section of the two return smoke pipe, from
And flue gas flow rate is improved, and resistance can be controlled so that the resistance in pipeline does not exceed limit value, so as to complete this practicality
It is new.
Specifically, the purpose of this utility model is to provide on a kind of a kind of 1, flue to be provided with the three of spherical shell cover
Backhaul horizontal internal combustion boiler, which is characterized in that the boiler includes boiler jacket 1 and the flue 2 being arranged on inside boiler jacket 1,
Described 2 one end of flue is connected by combustor interface 3 with boiler jacket 1, is provided in the other end of the flue 2
Spherical shell cover 4,
5 and three backhaul smoke pipe 6 of two return smoke pipe is additionally provided in institute's boiler jacket 1,
Front smoke box 7 of the both ends of the two return smoke pipe 5 respectively with spherical shell cover 4 and outside boiler jacket 1 connects；
The two return smoke pipe 5 includes the straight pipe being connected with front smoke box 7 and the bend loss being connected with spherical shell cover 4；
Internal and external threads are provided on the straight pipe portions wall, straight pipe rest part is the smooth circle of inside and outside wall
Pipe.
Wherein, on 4 spherical surface of spherical shell cover, multiple holes, each perforate are opened along the circle parallel with end socket outer rim circle
Connect the bend loss, and the bend loss and 4 connecting place of spherical shell cover are short straight tube 51, flue gas passes through short straight tube in flue 2
51 enter bend loss, enter straight pipe after flowing through bend loss；
Described circular including at least two, diameter is all in the range of the 2/3-5/7 of end socket outer rim circular diameter.
Wherein, the bend loss is class semi-circular shape, wherein, the 1/ of 51 of length no more than bend loss total length of short straight tube
10。
Wherein, for short straight tube 51 with the axis of flue 2 in predetermined angular, the predetermined angular is 45~75 degree.
Wherein, the both ends of the three backhauls smoke pipe 6 are connected respectively with front smoke box 7 and rear smoke box 8, and three backhaul smoke pipes 6 are set
In 5 outside of two return smoke pipe.
Wherein, which further includes the pedestal 10 positioned at 1 lower section of boiler jacket.In the boiler jacket 1, in front smoke box
7 tops are provided with stay bolt bar 9, and 9 other end of stay bolt bar is arranged on rear smoke box 8,
5 and three backhaul smoke pipe 6 of two return smoke pipe is not provided in 9 close region of stay bolt bar.
Wherein, the straight pipe for being provided with internal and external threads is connected with front smoke box 7, is provided with the straight tube segment length of internal and external threads
Degree accounts for the 1/3-1/2 of straight pipe total length.
Wherein, which further includes the pedestal 10 positioned at 1 lower section of boiler jacket.
Advantageous effect includes possessed by the utility model：
(1) return combustion chamber is omitted according in boiler provided by the utility model, reduces the complexity of equipment, reduce
Preparation section so that whole processing cost reduces, and can also improve the service life of equipment entirety；
It (2), can according to the two return smoke pipe with part internal and external threads is provided in boiler provided by the utility model
Flue gas flow rate is properly increased in the case of increase flue gas resistance not too much, improves heat exchange efficiency；
(3) better stress state can also be had according to boiler provided by the utility model, avoids the production of tube-plate fracture
It is raw, while such design under the same conditions can arrange more three backhauls smoke pipes, for steam boiler, such design can
So that highest pyrosphere is lower, steam quality is improved.In addition, the boiler structure and manufacturing process are relatively easy, characteristics of compact layout is safeguarded
It is convenient.
Description of the drawings
Fig. 1 shows to be crouched according to three backhauls for being provided with spherical shell cover on a kind of flue of preferred embodiment of the utility model
Formula internally fired boiler overall structure diagram；
Fig. 2 shows to be crouched according to three backhauls for being provided with spherical shell cover on a kind of flue of preferred embodiment of the utility model
Formula internally fired boiler sectional view；
Fig. 3 shows to be crouched according to three backhauls for being provided with spherical shell cover on a kind of flue of preferred embodiment of the utility model
Bend loss structure diagram in two return smoke pipe in formula internally fired boiler；
Fig. 4 shows to be crouched according to three backhauls for being provided with spherical shell cover on a kind of flue of preferred embodiment of the utility model
Straight tube section structure schematic diagram in two return smoke pipe in formula internally fired boiler.
Drawing reference numeral explanation：
1- boiler jackets
2- flues
3- combustor interfaces
4- spherical shell covers
5- two return smoke pipes
51- short straight tubes
The outer convex threads of 52-
53- females
Tri- backhaul smoke pipes of 6-
7- front smoke boxs
Smoke box after 8-
9- stay bolt bars
10- pedestals
Specific embodiment
The utility model is further described below by drawings and examples.By these explanations, this practicality is new
The characteristics of type and advantage will become more apparent from clearly.
Dedicated word " exemplary " means " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.Although each of embodiment is shown in the drawings
In terms of kind, but unless otherwise indicated, it is not necessary to attached drawing drawn to scale.
According to the three backhaul horizontal internal combustion boilers that spherical shell cover is provided on flue provided by the utility model, such as Fig. 1 and
Shown in Fig. 2, which includes boiler jacket 1 and the flue 2 being arranged on inside boiler jacket 1,
Described 2 one end of flue is connected by combustor interface 3 with boiler jacket 1, is provided in the other end of the flue 2
Spherical shell cover 4, the dome head are in hemispherical, can reduce the stress concentration of flue afterbody, and reduce gas energy damage
Consumption, helps to improve the thermal efficiency.
5 and three backhaul smoke pipe 6 of two return smoke pipe is additionally provided in institute's boiler jacket 1,
Front smoke box 7 of the both ends of the two return smoke pipe 5 respectively with spherical shell cover 4 and outside boiler jacket 1 connects；
The two return smoke pipe 5 includes the straight pipe being connected with front smoke box 7 and the bend loss being connected with spherical shell cover 4；
Internal and external threads are provided on the straight pipe portions wall, straight pipe rest part is the smooth circle of inside and outside wall
Pipe.
In one preferred embodiment, as shown in Figure 3, on 4 spherical surface of spherical shell cover, edge and end socket outer rim
The parallel circle of circle opens multiple holes, and each perforate connects the bend loss, and the bend loss is short with 4 connecting place of spherical shell cover
Straight tube 51, flue gas enters bend loss by short straight tube 51 in flue 2, flows through after bend loss into straight pipe；The short straight tube
51 can improve flue gas flow rate, weaken flow resistance, additionally it is possible in processing and manufacturing alignment be facilitated to weld, improve processing effect
Rate；
Described circular including at least two, diameter is all in the range of the 2/3-5/7 of end socket outer rim circular diameter.
Preferably, the bend loss is class semi-circular shape, wherein, the 1/ of 51 of length no more than bend loss total length of short straight tube
10。
The axis of the short straight tube 51 and flue 2 is in predetermined angular.
Preferably, the predetermined angular is 45~75 degree.The predetermined angular enables to the flue gas in flue more smoothly
Ground is entered in two return smoke pipe 5, reduces the resistance that flue gas is subject to.
Preferably, the both ends of the three backhauls smoke pipe 6 are connected respectively with front smoke box 7 and rear smoke box 8, are being provided with three backhauls
The region of smoke pipe 6 need not set stay bolt bar, and three backhaul smoke pipes 6 are capable of providing enough stay bolt power.
In one preferred embodiment, the 5 and three backhaul smoke pipe 6 of two return smoke pipe is both provided with multiple, three times
Journey smoke pipe 6 is arranged on 5 outside of two return smoke pipe, in the radial section of boiler, multiple 5 and three backhaul smoke pipes 6 of two return smoke pipe
Be looped around the outside of flue 2, and the three backhauls smoke pipe 6 apart from flue 2 farther out, the two return smoke pipe 5 is relatively near apart from flue 2.
In one preferred embodiment, stay bolt bar 9 is provided on 7 top of front smoke box, 9 other end of stay bolt bar is arranged at
Afterwards on smoke box 8,
5 and three backhaul smoke pipe 6 of two return smoke pipe is not provided in 9 close region of stay bolt bar, which can be used for converging
Collect vapor, so the equipment can be used for steam boiler.
In one preferred embodiment, as shown in Figure 4, the straight pipe and front smoke box for being provided with internal and external threads
7 connections, the flow development length for being provided with internal and external threads account for the 1/3-1/2 of straight pipe total length；Preferably, in smoke pipe inner body wall
The outer convex thread of upper setting, with being provided with female at the corresponding position of outer convex thread on the smoke pipe body outer wall；Institute
The female stated on outer convex thread and outer wall on inner wall is formed via external compression, i.e., internal and external threads described herein
Refer to the combination of the female 53 on outer convex thread 52 and the outer wall on inner wall；
The internal and external threads are arranged on close to the at one end of front smoke box 7 on straight pipe, if without internal and external threads, flue gas exists
Flow velocity in this section may reduce, by setting the internal and external threads so that flow velocity rise of the flue gas in the pipeline section, thus
The heat exchange efficiency of two return smoke pipe 5 is improved in the case of not increasing flue gas resistance excessively.
Preferably, which further includes the pedestal 10 positioned at 1 lower section of boiler jacket.
, it is necessary to explanation, the fingers such as term " on ", " under ", " interior ", " outer " " preceding " " rear " in the description of the utility model
The orientation or position relationship shown is based on the orientation or position relationship under utility model works state, is for only for ease of description
The utility model and simplified description rather than instruction imply that signified device or element must be with specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
The utility model is illustrated above in association with preferred embodiment, but these embodiments are only models
Example property, only play the role of illustrative.On this basis, a variety of replacements and improvement can be carried out to the utility model, these
It each falls in the scope of protection of the utility model.
Claims (8)
1. three backhaul horizontal internal combustion boilers of spherical shell cover are provided on a kind of flue, which is characterized in that the boiler includes boiler
Shell (1) and the flue (2) for being arranged on boiler jacket (1) inside,
Described flue (2) one end is connected by combustor interface (3) with boiler jacket (1), is set in the other end of the flue (2)
Spherical shell cover (4) is equipped with,
Two return smoke pipe (5) and three backhaul smoke pipes (6) are additionally provided in institute's boiler jacket (1),
The both ends of the two return smoke pipe (5) are respectively with spherical shell cover (4) and positioned at the external front smoke box (7) of boiler jacket (1)
Connection；
The two return smoke pipe (5) includes the straight pipe being connected with front smoke box (7) and the bend loss being connected with spherical shell cover (4)；
Internal and external threads are provided on the straight pipe portions wall, straight pipe rest part is the smooth pipe of inside and outside wall.
2. boiler according to claim 1, which is characterized in that
On the spherical shell cover (4) spherical surface, multiple holes are opened along the circle parallel with end socket outer rim circle, described in each perforate connects
Bend loss, and the bend loss and spherical shell cover (4) connecting place are short straight tube (51), flue gas passes through short straight tube in flue (2)
(51) bend loss is entered, enters straight pipe after flowing through bend loss；
Described circular including at least two, diameter is all in the range of the 2/3-5/7 of end socket outer rim circular diameter.
3. boiler according to claim 2, which is characterized in that
The bend loss is class semi-circular shape, wherein, the 1/10 of the of length no more than bend loss total length of short straight tube (51).
4. boiler according to claim 3, which is characterized in that
The axis of short straight tube (51) and flue (2) is in predetermined angular, and the predetermined angular is 45~75 degree.
5. boiler according to claim 1, which is characterized in that
The both ends of the three backhauls smoke pipe (6) are connected respectively with front smoke box (7) and rear smoke box (8), and three backhaul smoke pipes (6) are arranged on
On the outside of two return smoke pipe (5).
6. boiler according to claim 1, which is characterized in that
In the boiler jacket (1), stay bolt bar (9) is provided on front smoke box (7) top, stay bolt bar (9) other end is arranged at
Afterwards on smoke box (8),
Two return smoke pipe (5) and three backhaul smoke pipes (6) are not provided in stay bolt bar (9) close region.
7. boiler according to claim 1, which is characterized in that
The straight pipe for being provided with internal and external threads is connected with front smoke box (7), and the flow development length for being provided with internal and external threads accounts for directly
The 1/3-1/2 of pipeline section total length.
8. boiler according to claim 1, which is characterized in that
The boiler further includes the pedestal (10) below boiler jacket (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820169032.8U CN207455897U (en) | 2018-01-31 | 2018-01-31 | Three backhaul horizontal internal combustion boilers of spherical shell cover are provided on flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820169032.8U CN207455897U (en) | 2018-01-31 | 2018-01-31 | Three backhaul horizontal internal combustion boilers of spherical shell cover are provided on flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207455897U true CN207455897U (en) | 2018-06-05 |
Family
ID=62275989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820169032.8U Active CN207455897U (en) | 2018-01-31 | 2018-01-31 | Three backhaul horizontal internal combustion boilers of spherical shell cover are provided on flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207455897U (en) |
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2018
- 2018-01-31 CN CN201820169032.8U patent/CN207455897U/en active Active
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