CN212132386U - Hearth structure of water pipe boiler - Google Patents
Hearth structure of water pipe boiler Download PDFInfo
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- CN212132386U CN212132386U CN202020222780.5U CN202020222780U CN212132386U CN 212132386 U CN212132386 U CN 212132386U CN 202020222780 U CN202020222780 U CN 202020222780U CN 212132386 U CN212132386 U CN 212132386U
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Abstract
The utility model relates to a water tube boiler furnace structure, which comprises two steam drums arranged at an upper and a lower interval, a left side wall and a right side wall are arranged between the two steam drums, the two steam drums jointly form a furnace with a section of an inverse D-shaped structure, the left side wall is composed of a plurality of outer tubes arranged in parallel, the right side wall is composed of a plurality of inner tubes arranged in parallel, and both ends of the inner tubes and both ends of the outer tubes are respectively connected and communicated with the two steam drums; the outer pipe comprises a first outer pipe and a second outer pipe which are arranged at intervals, and the joint points between the first outer pipe and the second outer pipe which are adjacent to each other and the steam drum are staggered along the circumferential direction of the steam drum; the inner pipe comprises a first inner pipe and a second inner pipe which are arranged at intervals, and the joint points between the first inner pipe and the second inner pipe which are adjacent to each other and the steam drum are staggered along the circumferential direction of the steam drum. The utility model discloses a dislocation design between adjacent outer tube, between adjacent interior intertube under the certain circumstances of steam pocket wall thickness, has improved the hole bridge coefficient of weakening, has guaranteed the whole quality of furnace, has prolonged life, and with low costs, and the suitability is good.
Description
Technical Field
The utility model belongs to the technical field of water tube boiler technique and specifically relates to a water tube boiler furnace structure.
Background
In the design of a water tube boiler, a water cooled wall formed by a plurality of tubes arranged in parallel is communicated with a steam drum to form a hearth. With the improvement of the rated pressure of the boiler outlet, the wall thickness of the steam drum is thicker and thicker in order to ensure the quality of the boiler, particularly the quality of the steam drum wall and the quality of the water-cooled wall at the position communicated with the pipe.
The increase of the steam drum wall thickness is mainly limited by two aspects:
1. cost issues, increased wall thickness, and increased metal consumption of the boiler.
2. Is limited by the non-insulated drum body (i.e. steam drum) in the GB/T16507 Water-tube boiler specification.
In the prior art, there are generally the following two solutions:
1. the joint of the hearth water-cooled wall pipe and the steam pocket adopts the reducing pipe (namely the reducer), the method can effectively reduce the wall thickness of the steam pocket under the condition of ensuring the hole bridge weakening coefficient, but the processing cost of the reducing pipe is high, and the method is not economical.
2. The method for increasing the intercept of the water wall tubes of the hearth is adopted, namely, the distance between the adjacent tubes is increased, and the method can effectively reduce the wall thickness of the steam drum under the condition of ensuring the hole bridge weakening coefficient; but only effective within a certain range because when the intercept of the furnace water wall tube is too large, the fins between the tubes are easily overheated, so that the furnace water wall is burnt.
SUMMERY OF THE UTILITY MODEL
The applicant provides a water tube boiler furnace structure with a reasonable structure aiming at the defects in the prior art, so that the weakening coefficient of a hole bridge of a steam drum wall is greatly improved under the condition of certain steam drum wall thickness, namely, the pipe intercept of a water-cooled wall is ensured, and the service quality and the service life of the furnace are ensured.
The utility model discloses the technical scheme who adopts as follows:
a water tube boiler furnace structure comprises two steam drums which are arranged at intervals up and down, a left side wall and a right side wall are arranged between the outer wall surfaces of the two steam drums and jointly form a furnace with a reverse D-shaped section, the left side wall is composed of a plurality of outer pipes which are arranged in parallel, the right side wall is composed of a plurality of inner pipes which are arranged in parallel, and two ends of each inner pipe and two ends of each outer pipe are respectively communicated with the two steam drums; the outer pipe comprises a first outer pipe and a second outer pipe which are arranged at intervals, and the joint points between the first outer pipe and the second outer pipe which are adjacent to each other and the steam drum are staggered along the circumferential direction of the steam drum; the inner pipe comprises a first inner pipe and a second inner pipe which are arranged at intervals, and the joint points between the first inner pipe and the steam pocket and the joint points between the second inner pipe and the steam pocket are staggered along the circumferential direction of the steam pocket.
As a further improvement of the above technical solution:
and the joint of the first outer pipe and the steam drum is positioned outside the joint of the second outer pipe and the steam drum.
The structure of the first outer pipe is as follows: including the outer tube body of anti C type structure, outer tube body both ends head outwards extends respectively has the rake, and two rake ends extend respectively has straight portion, the end of straight portion link up with the wall rigid coupling of steam pocket.
The outer tube body and the inclined part as well as the inclined part and the straight part are transited through arc structures.
The axis of the straight part is opposite to the center of the section of the steam pocket.
The outer pipe II is of an inverted C-shaped structure; the axial direction of the end parts of the two ends of the outer pipe is right opposite to the center of the section of the steam drum.
And the joint of the first inner pipe and the steam pocket is positioned outside the joint of the second inner pipe and the steam pocket.
The axial directions of the end parts at the two ends of the inner tube I and the end parts at the two ends of the inner tube II are both right opposite to the center of the section of the steam pocket.
The adjacent outer pipes and the adjacent inner pipes are welded and connected through fins, and the fins are steel sheets.
The axes of the two steam drums are positioned in the same vertical plane, and the two steam drums are divided into an upper steam drum at the upper part and a lower steam drum at the lower part; the right side wall is located on the inner side of the left side wall, the joint of the inner pipe and the upper steam drum is located below the joint of the outer pipe and the upper steam drum, and the joint of the inner pipe and the lower steam drum is located above the joint of the outer pipe and the lower steam drum.
The utility model has the advantages as follows:
the utility model has the advantages of compact and reasonable structure, convenient operation carries out the dislocation design through the junction with the steam pocket between adjacent outer tube, adjacent interior intertube, under the certain circumstances of steam pocket wall thickness, has guaranteed the pipe intercept of junction, has improved the hole bridge coefficient of weakening of steam pocket to guarantee the holistic quality of furnace, prolonged life, and with low costs, the suitability is good.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic view of the connection between the upper steam drum and the first and second outer tubes of the present invention.
Fig. 4 is a schematic structural diagram of the first outer tube of the present invention.
Wherein: 1. an upper steam drum; 2. a first outer tube; 3. a second outer tube; 4. a first inner pipe; 5. a second inner tube; 6. a lower steam pocket; 10. a left side wall; 20. a right side wall; 21. an outer tube body; 22. an inclined portion; 23. a straight portion.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the water tube boiler furnace structure of the embodiment includes two steam drums arranged at an interval from top to bottom, a left side wall 10 and a right side wall 20 are installed between the outer wall surfaces of the two steam drums to jointly form a furnace with a section of an inverted D-shaped structure, the left side wall 10 is composed of a plurality of outer tubes arranged in parallel, the right side wall 20 is composed of a plurality of inner tubes arranged in parallel, and two ends of the inner tubes and two ends of the outer tubes are respectively connected and communicated with the two steam drums to form circulation of water and steam in the tubes and the steam drums; as shown in fig. 2 and 3, the outer pipe comprises a first outer pipe 2 and a second outer pipe 3 which are arranged at intervals, and the respective connection points between the adjacent first outer pipe 2 and second outer pipe 3 and the steam drum are staggered along the circumferential direction of the steam drum; the inner pipe comprises a first inner pipe 4 and a second inner pipe 5 which are arranged at intervals, and the joint points between the first inner pipe 4 and the second inner pipe 5 which are adjacent to each other and the steam drum are staggered along the circumferential direction of the steam drum.
The joint of the first outer pipe 2 and the steam drum is positioned outside the joint of the second outer pipe 3 and the steam drum.
As shown in fig. 4, the outer tube one 2 has the following structure: including the outer tube body 21 of anti C type structure, outer tube body 21 both ends head outwards extends respectively has rake 22, and two rake 22 ends extend respectively has straight portion 23, and the end of straight portion 23 link up with the wall rigid coupling of steam pocket.
The transition between the outer tube body 21 and the inclined portion 22 and between the inclined portion 22 and the straight portion 23 is through an arc structure.
The axis of the straight portion 23 is directed towards the centre of the cross-section of the drum.
The outer pipe II 3 is of an inverted C-shaped structure; the axial direction of the end parts of the two ends of the outer pipe II 3 is right opposite to the center of the section of the steam drum.
The joint of the first inner pipe 4 and the steam pocket is positioned outside the joint of the second inner pipe 5 and the steam pocket.
The axial directions of the end parts at the two ends of the first inner pipe 4 and the end parts at the two ends of the second inner pipe 5 are all right opposite to the center of the section of the steam pocket.
The adjacent outer pipes and the adjacent inner pipes are welded and connected through fins which are steel sheets.
The axes of the two steam drums are positioned in the same vertical plane, and the two steam drums are divided into an upper steam drum 1 at the upper part and a lower steam drum 6 at the lower part; the right side wall 20 is located on the inner side of the left side wall 10, the point of contact of the inner tube with the upper drum 1 is located below the point of contact of the outer tube with the upper drum 1, and the point of contact of the inner tube with the lower drum 6 is located above the point of contact of the outer tube with the lower drum 6.
The two ends of the inner pipe and the two ends of the outer pipe are welded or connected with the two steam drums in an expanding way.
The utility model discloses a carry out the dislocation design with the junction of steam pocket between adjacent outer tube, adjacent interior intertube, under the certain circumstances of steam pocket wall thickness, guaranteed the pipe intercept of junction, improved the hole bridge coefficient of weakening of steam pocket.
The utility model discloses simple structure, it is convenient to make processing, has guaranteed the furnace quality, has prolonged its life, and with low costs.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (10)
1. The utility model provides a water tube boiler furnace structure, includes two steam drums that the interval set up from top to bottom, installs left side wall (10) and right side wall (20) between two steam drum outer wall faces, constitutes the furnace that the cross-section is anti-D type structure jointly, its characterized in that: the left side wall (10) is composed of a plurality of outer pipes arranged in parallel, the right side wall (20) is composed of a plurality of inner pipes arranged in parallel, and two ends of the inner pipes and two ends of the outer pipes are respectively communicated with the two steam drums; the outer pipe comprises a first outer pipe (2) and a second outer pipe (3) which are arranged at intervals, and the connection points between the first outer pipe (2) and the second outer pipe (3) which are adjacent to each other and the steam drum are staggered along the circumferential direction of the steam drum; the inner pipe comprises a first inner pipe (4) and a second inner pipe (5) which are arranged at intervals, and the connection points between the first inner pipe (4) and the second inner pipe (5) which are adjacent to each other and the steam drum are staggered along the circumferential direction of the steam drum.
2. The water tube boiler furnace structure of claim 1, wherein: and the joint of the first outer pipe (2) and the steam drum is positioned outside the joint of the second outer pipe (3) and the steam drum.
3. The water tube boiler furnace structure of claim 2, wherein: the structure of the first outer pipe (2) is as follows: including outer tube body (21) of anti C type structure, outer tube body (21) both ends head outwards extends respectively has rake (22), and two rake (22) ends extend respectively has straight portion (23), the end of straight portion (23) link up with the wall rigid coupling of steam pocket.
4. A water tube boiler furnace structure as claimed in claim 3, wherein: the outer tube body (21) and the inclined part (22) as well as the inclined part (22) and the straight part (23) are transited through arc structures.
5. A water tube boiler furnace structure as claimed in claim 3, wherein: the axis of the straight part (23) is opposite to the center of the section of the steam drum.
6. The water tube boiler furnace structure of claim 2, wherein: the outer pipe II (3) is of an inverted C-shaped structure; the axial direction of the end parts of the two ends of the outer pipe II (3) is right opposite to the center of the section of the steam pocket.
7. The water tube boiler furnace structure of claim 1, wherein: and the joint of the inner pipe I (4) and the steam pocket is positioned outside the joint of the inner pipe II (5) and the steam pocket.
8. The water tube boiler furnace structure of claim 7, wherein: the axial directions of the end parts of the two ends of the inner pipe I (4) and the end parts of the two ends of the inner pipe II (5) are both right opposite to the center of the section of the steam pocket.
9. The water tube boiler furnace structure of claim 1, wherein: the adjacent outer pipes and the adjacent inner pipes are welded and connected through fins, and the fins are steel sheets.
10. The water tube boiler furnace structure of claim 1, wherein: the axes of the two steam drums are positioned in the same vertical plane, and the two steam drums are divided into an upper steam drum (1) at the upper part and a lower steam drum (6) at the lower part; the right side wall (20) is located on the inner side of the left side wall (10), the joint of the inner pipe and the upper steam drum (1) is located below the joint of the outer pipe and the upper steam drum (1), and the joint of the inner pipe and the lower steam drum (6) is located above the joint of the outer pipe and the lower steam drum (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020222780.5U CN212132386U (en) | 2020-02-27 | 2020-02-27 | Hearth structure of water pipe boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020222780.5U CN212132386U (en) | 2020-02-27 | 2020-02-27 | Hearth structure of water pipe boiler |
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| Publication Number | Publication Date |
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| CN212132386U true CN212132386U (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020222780.5U Active CN212132386U (en) | 2020-02-27 | 2020-02-27 | Hearth structure of water pipe boiler |
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| CN (1) | CN212132386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864757A (en) * | 2021-10-19 | 2021-12-31 | 西安热工研究院有限公司 | Boiler with built-in water-cooled wall |
-
2020
- 2020-02-27 CN CN202020222780.5U patent/CN212132386U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864757A (en) * | 2021-10-19 | 2021-12-31 | 西安热工研究院有限公司 | Boiler with built-in water-cooled wall |
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