CN210717475U - Large-scale water tube boiler with enhanced structural stability - Google Patents
Large-scale water tube boiler with enhanced structural stability Download PDFInfo
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- CN210717475U CN210717475U CN201921515315.4U CN201921515315U CN210717475U CN 210717475 U CN210717475 U CN 210717475U CN 201921515315 U CN201921515315 U CN 201921515315U CN 210717475 U CN210717475 U CN 210717475U
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Abstract
The utility model discloses a large water tube boiler with enhanced structural stability, wherein a lower boiler barrel of a boiler body is arranged on a boiler body support, and an upper boiler barrel is supported by a convection tube; the left wall membrane type wall, the right wall membrane type wall and the rear wall membrane type wall are respectively connected with the upper drum and the lower drum to form a closed boiler body; the left wall membrane type wall is reinforced by a left wall membrane type wall reinforcing beam, the right wall membrane type wall is reinforced by a right wall membrane type wall reinforcing beam, the rear wall membrane type wall is reinforced by a rear wall membrane type wall vertical steel beam, and a membrane type wall annular reinforcing steel beam is integrally formed; the left wall membrane type wall vertical steel beam and the right wall membrane type wall vertical steel beam are added to the left wall membrane type wall and the right wall membrane type wall, and the rear wall membrane type wall vertical steel beam is added to the rear wall membrane type wall; the fins connect the single convection tubes into a whole row. The utility model discloses a girder steel and the criss-cross vertical girder steel design of anyhow are strengthened to diaphragm type wall annular to the convection tube is even into whole row, has increased boiler furnace body rigidity, and the great problem of furnace body vibration when having eliminated the operation, and can guarantee the free expansion of boiler furnace body.
Description
Technical Field
The utility model relates to a reinforcing structural stability's large-scale water tube boiler.
Background
The SZS type boiler is a typical D-shaped double-drum longitudinal water tube boiler, has simple and compact structure, strong universality, reliable operation, no need of large-scale steel frames and less cylinder consumption, and is particularly widely applied to oil-fired and gas-fired boilers.
The operation stability problem of the large-scale SZS boiler is directly related to the structure of the large-scale SZS boiler, because the SZS boiler is of a structure that the lower part supports the upper boiler barrel and the lower boiler barrel, and the upper boiler barrel and the lower boiler barrel are all supported by membrane wall tubes and convection tubes (without large-diameter descending tubes), along with the increase of the boiler capacity, the overall dimension of the boiler body is greatly increased, the height of the boiler is higher and higher, the support stability is naturally worse, and the problem that the vibration of the boiler body is larger when the SZS boiler operates is caused. Some of the devices vibrate the convection bank to cause the crack of the welding seam or the pipe between the upper and the lower boiler barrels; some diaphragm type walls vibrate to cause furnace wall shaking, thereby bringing potential safety hazards to using units.
In the past, the stability is improved by adding the upper cylinder support frame, adding the large-caliber descending pipe and other structures, but the independent lower support and the characteristic of free expansion towards the periphery and upwards of the SZS type boiler are completely destroyed easily by the mode.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reinforcing structural stability's large-scale water tube boiler, the whole rigidity of plane membrane is high, has eliminated the tympanic membrane effect, has also avoided the body to produce the vibration along with the flue gas flows.
The utility model provides a large water tube boiler with enhanced structural stability, which comprises a boiler body, wherein the boiler body is of a D-shaped double-drum longitudinally-arranged structure and comprises a boiler body support, an upper drum, a lower drum, a left wall membrane wall, a right wall membrane wall, a rear wall membrane wall and convection tubes; the lower boiler barrel is arranged on the boiler body support and supports the upper boiler barrel through the convection pipe; the left wall membrane type wall, the right wall membrane type wall and the rear wall membrane type wall are respectively connected with the upper drum and the lower drum to form a closed boiler body;
the left wall membrane type wall is reinforced by a left wall membrane type wall reinforcing beam, the right wall membrane type wall is reinforced by a right wall membrane type wall reinforcing beam, the rear wall membrane type wall is reinforced by a rear wall membrane type wall vertical steel beam, and a membrane type wall annular reinforcing steel beam is integrally formed; adding left and right wall membrane type wall vertical steel beams to the left wall membrane type wall and the right wall membrane type wall, and adding a rear wall membrane type wall vertical steel beam to the rear wall membrane type wall; the convection tubes are connected into a whole row by 1-2 fins.
Optionally or preferably, in the large-scale water pipe boiler, the left and right wall membrane wall vertical steel beams and the rear wall membrane wall vertical steel beam are both provided with fulcrum structures. The fulcrum structure is preferably annular, so that the left wall diaphragm type wall, the right wall diaphragm type wall and the rear wall diaphragm type wall can directionally slide up and down when expanding, and the added steel beams do not influence the normal expansion of the furnace body up and down, left and right.
Optionally or preferably, in the large-sized water tube boiler, the upper drum is connected with an upper header, the lower drum is connected with a lower header, the upper ends of the left and right wall membrane type wall vertical steel beams and the rear wall membrane type wall vertical steel beam are connected with the upper header, and the lower ends of the left and right wall membrane type wall vertical steel beams are connected with the lower header.
Optionally or preferably, in the large-scale water pipe boiler, the boiler body support is in contact with the left wall membrane type wall, the lower boiler barrel and the lower header.
Optionally or preferably, in the large-sized water pipe boiler, an arc-shaped reinforcing plate is further connected between the fin and the convection pipe.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses adopting the design of diaphragm type wall annular enhancement girder steel and the crisscross vertical girder steel of anyhow to indulge formula water pipe boiler at "D" type double-drum that uses the SZS type boiler as typical, linking into the whole row with 1 ~ 2 short fins of point between vertical convection bank of tubes, increased boiler furnace body rigidity, the furnace body has the great problem of vibration when having eliminated the operation of SZS type boiler to can guarantee the free inflation of boiler furnace body. Overcomes the defects caused by the modification modes of increasing the upper boiler supporting frame, increasing the large-caliber descending pipe and the like.
Drawings
FIG. 1 is a front view of a boiler body structure;
FIG. 2 is a side view of a boiler body structure;
FIG. 3 is a schematic view of the smoke trend;
fig. 4 is a structural diagram of the convection tube connected with the fins.
In the figure:
1. go up boiler barrel 2, right wall diaphragm type wall stiffening beam 3, right wall diaphragm type wall
4. Lower boiler barrel 5 and furnace body support
6. Vertical girder steel 7 of left and right wall diaphragm type wall, back wall diaphragm type wall stiffening beam
8. Rear wall diaphragm wall 9, left wall diaphragm wall 10 and left wall diaphragm wall stiffening beam
11. Vertical girder steel 12 of back wall membrane wall, convection tube
121. Fin 122, arc reinforcement piece.
Detailed Description
The technical solutions of the present invention are explained and illustrated in detail below with reference to specific embodiments so that those skilled in the art can better understand and implement the embodiments.
Referring to fig. 1 and 2, a large water tube boiler with enhanced structural stability includes an upper drum 1, a right wall diaphragm type wall stiffening beam 2, a right wall diaphragm type wall 3, a lower drum 4, a boiler body support 5, left and right wall diaphragm type wall vertical steel beams 6, a rear wall diaphragm type wall stiffening beam 7, a rear wall diaphragm type wall 8, a left wall diaphragm type wall 9, a left wall diaphragm type wall stiffening beam 10, a rear wall diaphragm type wall vertical steel beam 11, and convection tubes 12.
The lower boiler barrel 4 is arranged on the boiler body support 5 and supports the upper boiler barrel 1 through a convection pipe 12 pipe row, and the left wall membrane type wall 9, the right wall membrane type wall 3 and the rear wall membrane type wall 8 are respectively connected with the upper boiler barrel 1 and the lower boiler barrel 4 to form a closed boiler body. Along with the increase of the boiler capacity, the overall dimension of the boiler body is greatly increased, the boiler height is higher and higher, the support stability is naturally poorer and poorer, and the problem that the boiler body has larger vibration when the SZS type boiler operates is caused. The large-area planar membrane type wall of the SZS type furnace body has low strength, the whole membrane type wall is like a tympanic membrane, the middle of the membrane type wall is weakest, and the problem of wall surface shaking can be caused under the scouring of flame airflow.
The left wall membrane type wall 9 is reinforced by a left wall membrane type wall reinforcing beam 10, the right wall membrane type wall 3 is reinforced by a right wall membrane type wall reinforcing beam 2, the rear wall membrane type wall 8 is reinforced by a rear wall membrane type wall vertical steel beam 11, and a membrane type wall annular reinforcing steel beam is integrally formed; and the left wall membrane type wall vertical steel beam 6 and the right wall membrane type wall vertical steel beam 6 are added to the left wall membrane type wall 9 and the right wall membrane type wall 3, and the rear wall membrane type wall vertical steel beam 11 is added to the rear wall membrane type wall 8 for reinforcement design, so that the overall rigidity of the planar membrane is improved, and the tympanic effect is eliminated. In addition, the vertical steel beam is also provided with a fulcrum structure capable of directionally sliding up and down, and preferably an annular steel ring welded on the vertical steel beam, so that the added steel beam does not influence the vertical and horizontal normal expansion of the furnace body.
The upper ends of the left and right wall membrane wall vertical steel beams and the rear wall membrane wall vertical steel beam are connected with the upper header, and the lower ends of the left and right wall membrane wall vertical steel beams and the rear wall membrane wall vertical steel beam are connected with the lower header. The furnace body support is contacted with the left wall membrane type wall, the lower boiler barrel and the lower header. The independent lower support and the free expansion to the periphery and upwards of the boiler are not damaged.
For the structural problems of high height of an SZS type furnace body and heavy weight of an upper boiler barrel, the weight of the upper boiler barrel can be evenly distributed on more convection pipes by increasing the number of supported convection pipes, the vertical load capacity borne by a single convection pipe is reduced, the strength and the rigidity of the pipes can be improved by increasing the pipe diameter and the wall thickness of each pipe, and the unstable condition of the stress of the pipes is avoided together; in addition, 1-2 short fins are used for connecting the single tubes into a whole row among the longitudinal convection tube rows, so that the integral rigidity of the tubes along the flowing direction of the flue gas is improved, and the tubes are prevented from vibrating along with the flowing of the flue gas. Referring to fig. 4, an arc-shaped reinforcing plate may be further added between the fins and the convection tubes, and the arc-shaped reinforcing plate surrounds and reinforces the convection tubes, so as to improve the connection stability between the convection tubes and the fins.
The inventive concept is explained in detail herein using specific examples, and the above description of the embodiments is only used to help understand the core idea of the present invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A large-scale water tube boiler for enhancing structural stability comprises a boiler body and is characterized in that the boiler body is of a D-shaped double-drum longitudinally-arranged structure and comprises a boiler body support, an upper drum, a lower drum, a left wall membrane type wall, a right wall membrane type wall, a rear wall membrane type wall and convection tubes; the lower boiler barrel is arranged on the boiler body support and supports the upper boiler barrel through the convection pipe; the left wall membrane type wall, the right wall membrane type wall and the rear wall membrane type wall are respectively connected with the upper drum and the lower drum to form a closed boiler body;
the left wall membrane type wall is reinforced by a left wall membrane type wall reinforcing beam, the right wall membrane type wall is reinforced by a right wall membrane type wall reinforcing beam, the rear wall membrane type wall is reinforced by a rear wall membrane type wall vertical steel beam, and a membrane type wall annular reinforcing steel beam is integrally formed; adding left and right wall membrane type wall vertical steel beams to the left wall membrane type wall and the right wall membrane type wall, and adding a rear wall membrane type wall vertical steel beam to the rear wall membrane type wall; the convection tubes are connected into a whole row by 1-2 fins.
2. The large water tube boiler according to claim 1, wherein the left and right membrane wall vertical steel beams and the rear wall membrane wall vertical steel beam are provided with fulcrum structures.
3. A large water tube boiler according to claim 1, wherein the upper drum is connected to an upper header, the lower drum is connected to a lower header, and the left and right wall membrane wall vertical steel beams and the rear wall membrane wall vertical steel beam are connected at the upper end to the upper header and at the lower end to the lower header.
4. A large water tube boiler according to claim 3, wherein the furnace body support is in contact with the left wall diaphragm wall, the lower drum and the lower header.
5. The large water tube boiler according to claim 1, wherein an arc-shaped reinforcing plate is further connected between the fins and the convection tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921515315.4U CN210717475U (en) | 2019-09-12 | 2019-09-12 | Large-scale water tube boiler with enhanced structural stability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921515315.4U CN210717475U (en) | 2019-09-12 | 2019-09-12 | Large-scale water tube boiler with enhanced structural stability |
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| CN210717475U true CN210717475U (en) | 2020-06-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374971A (en) * | 2021-07-12 | 2021-09-10 | 辽宁绿源能源环保科技集团有限责任公司 | Damping and shock-absorbing stiffening beam structure |
| CN116182153A (en) * | 2022-12-29 | 2023-05-30 | 哈尔滨红光锅炉总厂有限责任公司 | Downward side cutting type hearth outlet smoke window structure of energy-saving circulating fluidized bed boiler |
-
2019
- 2019-09-12 CN CN201921515315.4U patent/CN210717475U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374971A (en) * | 2021-07-12 | 2021-09-10 | 辽宁绿源能源环保科技集团有限责任公司 | Damping and shock-absorbing stiffening beam structure |
| CN116182153A (en) * | 2022-12-29 | 2023-05-30 | 哈尔滨红光锅炉总厂有限责任公司 | Downward side cutting type hearth outlet smoke window structure of energy-saving circulating fluidized bed boiler |
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