CN110848654A - Large-capacity longitudinally-arranged corner tube boiler - Google Patents
Large-capacity longitudinally-arranged corner tube boiler Download PDFInfo
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- CN110848654A CN110848654A CN201911181636.XA CN201911181636A CN110848654A CN 110848654 A CN110848654 A CN 110848654A CN 201911181636 A CN201911181636 A CN 201911181636A CN 110848654 A CN110848654 A CN 110848654A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
- F22B21/34—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers
- F22B21/36—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers involving an upper drum or headers mounted at the top of the combustion chamber
- F22B21/366—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers involving an upper drum or headers mounted at the top of the combustion chamber involving a horizontal drum mounted in the middle of the boiler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/24—Supporting, suspending, or setting arrangements, e.g. heat shielding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
- F23J2215/101—Nitrous oxide (N2O)
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention relates to a large-capacity longitudinally-arranged corner tube boiler, which relates to a corner tube boiler and aims to solve the problem that the existing corner tube boiler is supported by no steel frame, a fire grate is arranged in a single structure, the size of the boiler is overlarge during operation, the expansion direction is one-way, the expansion amount is not easy to guarantee as the sealing performance between an overlarge boiler body and the fire grate, and the capacity of the transversely-arranged corner tube boiler supported by four corners can be limited in a small range A rear left downcomer, a rear middle downcomer and a rear right downcomer. The invention is used in the field of corner tube boilers.
Description
Technical Field
The invention relates to an angle tube boiler, in particular to a large-capacity longitudinally-arranged angle tube boiler.
Background
Traditional steel frame construction boiler part is complicated, and weight is big, the installation cycle is long, the burning is insufficient, actual operating efficiency is low, atmospheric pollutants discharge value is high, drum front portion horizontal formula angle pipe boiler is owing to do not have the steelframe to support, it should not be too big to make the structure size, the grate is single structural arrangement, the size should not be too wide, the boiler size is too big when moving because the inflation direction is one-way, the inflation volume is difficult for guaranteeing like leakproofness between too big boiler body and grate, these factors all lead to horizontal formula four corners to support angle pipe boiler capacity and can only restrict in small-size within range.
Disclosure of Invention
The invention aims to solve the problems that the existing corner tube boiler is supported by a steel frame, fire grates are arranged in a single structure, when the boiler is oversized, the expansion direction is one-way, the expansion amount is not easy to guarantee as the tightness between the boiler body and the fire grates is overlarge, and the capacity of the horizontal type corner tube boiler with four corner supports can only be limited in a small range, and further provides a large-capacity longitudinal type corner tube boiler.
The technical scheme adopted by the invention for solving the problems is as follows:
the boiler comprises a boiler body, a smoke exhaust mechanism and a tail heating surface, wherein the boiler body and the tail heating surface are connected by the smoke exhaust mechanism, the boiler body comprises a boiler barrel, a front arch water-cooled wall, a rear arch water-cooled wall, a side water-cooled wall, a flue water-cooled wall, an eduction tube, a steam collecting tube, a connecting tube, a burnout chamber, a flag-type convection screen, a convection flue, a left fire grate, a right fire grate, a supporting seat assembly, an upper collecting box, a lower collecting box, a front left downcomer, a front middle downcomer, a front right downcomer, a rear left downcomer, a rear middle downcomer and a rear right downcomer; the front left downcomer, the front middle downcomer and the front right downcomer are arranged at the front end of the boiler body, the rear left downcomer, the rear middle downcomer and the rear right downcomer are arranged at the rear end of the boiler body, the front middle downcomer and the rear middle downcomer are arranged at the middle position of the boiler body, the boiler barrel is arranged at the upper middle position of the boiler body through a connecting pipe, the front middle downcomer and the rear middle downcomer, the front arch water-cooled wall is arranged at the front end of the boiler body, the rear arch water-cooled wall is arranged at the middle part of the boiler body and at the rear side of a hearth, the side water-cooled walls are arranged at two sides of the boiler body, the flue water-cooled wall is arranged at the rear end of the boiler body, and the front arch water-cooled wall, the rear arch water-cooled wall, the side water-cooled wall, the flue water-cooled wall, the front left downcomer, the front middle downcomer, the front right downcomer, the rear left downcomer, the rear middle downcomer and the rear right downcomer are respectively communicated with the boiler barrel through, the lower header is arranged at the lower part of the boiler body, the convection flue is arranged at the rear end of the boiler body, the flag type convection screen is arranged in the convection flue, the burn-out chamber is arranged above the convection flue, the rear part of the burn-out chamber is provided with a bypass flue outlet window, the left grate is arranged between the front left down pipe, the front middle down pipe, the rear left down pipe and the rear middle down pipe, the right grate is arranged between the front middle down pipe, the front right down pipe, the rear middle down pipe and the rear right down pipe, and the supporting seat assembly is arranged at the bottom of the boiler body.
The invention has the beneficial effects that:
this application is through adopting self-supporting structure, and independent support steelframe is not established to whole platform boiler, has alleviateed the weight of traditional steel frame construction boiler greatly, and the membrane wall all welds integratively, and the shock resistance is good. The boiler barrel is longitudinally arranged, and the length of the boiler barrel is reduced due to the longitudinally arranged boiler barrel, so that the weight and the water volume are reduced, and the load of the whole boiler is reduced. This application can reduce the length dimension of boiler width direction atress part at boiler bottom installation supporting seat subassembly, has reduced bending stress and the deformation that produces because of gravity, and then can reduce the cross sectional dimension of atress part, makes the angle pipe boiler can further enlarge the development. The utility model provides a boiler width direction inflation is with the two side expansions of symmetry central line as the benchmark, has reduced the inflation center and has set up the inflation displacement of controlling the unilateral when bight, and the leakproofness of large capacity layer firing angle tubular boiler is guaranteed in the corresponding reduction in inflation clearance, has reduced the expansion stress of collection case unilateral when preceding, back collection case inflation volume is inconsistent simultaneously. The fire grates are symmetrically arranged in a left-right double-machine mode, so that the fire grates can be separately adjusted in a distributed mode, and the design, manufacturing, installation and maintenance difficulty caused by the fact that the fire grates are too wide in size is reduced. The bypass flue gas outlet window is arranged at the position of the burn-out chamber, so that the boiler can adjust and mix a part of high-temperature flue gas and low-temperature flue gas when the temperature of the flue gas at the outlet of the low-load operation body is too low, and the SCR denitration reaction requirement can be met.
Drawings
Fig. 1 is a front view of the overall structure of the present application.
Fig. 2 is an M-direction view and an N-direction view of fig. 1.
Fig. 3 is a view from P-P of fig. 1 and shows a schematic of the positions of the front left downcomer 6, the front center downcomer 8, the front right downcomer 7, the rear left downcomer 16, the rear center downcomer 18, and the rear right downcomer 17.
Fig. 4 is a schematic diagram of the positional relationship among the fixed support 31, the two multi-directional supports 32 and the three one-directional supports 33, wherein the direction of the arrows in the diagram is the expansion direction of the multi-directional supports 32 and the one-directional supports 33.
Fig. 5 is a front view of the fixed support seat 31.
Fig. 6 is a front view of the one-way support seat 33.
Fig. 7 is a left side view of fig. 6.
Fig. 8 is a front view of the multi-way bearing 32.
Fig. 9 is a left side view of fig. 8.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 9, and the large-capacity longitudinal corner tube boiler according to the present embodiment includes a boiler body, a smoke exhaust mechanism and a tail heating surface, the boiler body and the tail heating surface are connected by the smoke exhaust mechanism, the boiler body includes a boiler barrel 1, a front arch water wall 2, a rear arch water wall 3, a side water wall, a flue water wall 19, an outlet pipe 4, a steam collecting pipe 5, a connecting pipe 15, a burnout chamber 24, a flag type convection screen 25, a convection flue, a left grate 9, a right grate 10, a support base assembly, an upper header, a lower header, a front left downcomer 6, a front middle downcomer 8, a front right downcomer 7, a rear left downcomer 16, a rear middle downcomer 18 and a rear right downcomer 17; a front left downcomer 6, a front middle downcomer 8 and a front right downcomer 7 are arranged at the front end of the boiler body, a rear left downcomer 16, a rear middle downcomer 18 and a rear right downcomer 17 are arranged at the rear end of the boiler body, the front middle downcomer 8 and the rear middle downcomer 18 are arranged at the middle position of the boiler body, the boiler barrel 1 is arranged at the middle upper position of the boiler body through a connecting pipe 15, the front middle downcomer 8 and the rear middle downcomer 18, the front arch water wall 2 is arranged at the front end of the boiler body, the rear arch water wall 3 is arranged at the middle part of the boiler body and at the rear side of a furnace chamber, the side water walls are arranged at the two sides of the boiler body, the flue water walls are arranged at the rear end of the boiler body, the front arch water wall 2, the rear arch water wall 3, the side water walls, the water walls 19, the front left downcomer 6, the front middle downcomer 8, the front right downcomer 7, the rear left downcomer 16, the rear middle downcomer 18 and the rear right downcomer 17 are respectively arranged through the connecting pipe 15, The steam collecting pipe 5 and the eduction tube 4 are communicated with the boiler barrel 1, the lower header is arranged at the lower part of the boiler body, the convection flue is arranged at the rear end of the boiler body, the flag type convection screen 25 is arranged in the convection flue, the burn-out chamber 24 is arranged above the convection flue, the rear part of the burn-out chamber 24 is provided with a bypass flue outlet window 27, the left fire grate 9 is arranged between the front left downcomer 6, the front middle downcomer 8, the rear left downcomer 16 and the rear middle downcomer 18, the right fire grate 10 is arranged between the front middle downcomer 8, the front right downcomer 7, the rear middle downcomer 18 and the rear right downcomer 17, and the supporting seat component is arranged at the bottom of the boiler body.
The fire grates of the embodiment are symmetrically arranged in the left-right double-machine mode, so that the fire grates can be separately adjusted in a subsection mode, and the design, manufacturing, installation and maintenance difficulty caused by the fact that the fire grates are too wide is reduced.
The second embodiment is as follows: the embodiment is described with reference to fig. 1 to 3, and according to the large-capacity longitudinal corner tube boiler of the embodiment, the boiler barrel 1 is installed above the front middle down pipe 8 and the rear middle down pipe 18 through the upper header, and the whole boiler is not provided with an independent support steel frame, so that the weight of the traditional boiler with a steel frame structure is greatly reduced, and the longitudinal arrangement of the boiler barrel also reduces the length of the boiler barrel, thereby reducing the weight and the water volume and reducing the load of the whole boiler. Other structures and methods are the same as those of the first embodiment.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 9, and the supporting seat assembly of the present embodiment includes a fixed supporting seat 31, two multi-directional supporting seats 32 and three one-directional supporting seats 33; the fixed supporting seat 31 is arranged below the front middle descending pipe 8, the one-way supporting seat 33 is respectively arranged below the front left descending pipe 6, the front right descending pipe 7 and the rear middle descending pipe 18, and the multi-way supporting seat 32 is respectively arranged below the rear left descending pipe 16 and the rear right descending pipe 17. The supporting seat component is provided with six supporting points. The load is transferred to the boiler foundation through the corresponding support. The unidirectional supporting seat 33 is limited by the limiting channel steel, the front right support allows right free expansion, the front left support allows left free expansion, the rear middle support allows rear free expansion, the three supporting points are unidirectional sliding supports, the rear right support and the rear left support allow horizontal free expansion, the rear right support and the rear left support are multidirectional sliding supports, and the whole boiler allows upward free expansion. Other structures and methods are the same as those of the first embodiment.
Because the supporting seat is arranged in the middle of the body, the length of the stress component in the width direction of the boiler is reduced, the bending stress and the deformation caused by gravity are reduced, and then the section size of the stress component can be reduced, so that the corner tube boiler can be further developed in a large scale.
The fourth concrete implementation mode: referring to fig. 1 and 5, the present embodiment is described, in which a fixed support 31 includes a fixed column 31-1 and a bottom plate 31-2, the fixed upright post arc supporting plate 31-4 and a plurality of fixed upright post auxiliary supporting plates 31-3, the outer arc surface of the fixed upright post arc supporting plate 31-4 is fixedly arranged at the top end of the fixed upright post 31-1, the bottom end of the fixed upright post 31-1 is arranged on the bottom plate 31-2, the plurality of fixed upright post auxiliary supporting plates 31-3 are arranged on the outer circular surface of the fixed upright post 31-1 along the radial direction, each auxiliary supporting plate 31-3 of the auxiliary supporting plate is fixedly connected with the fixed upright post 31-1 and the bottom plate 31-2, and the inner arc surface of the fixed upright post arc supporting plate 31-4 is propped at the lower header pipe body below the expansion center of the front. In the embodiment, the expansion center of the front and middle downcomers 8 is superposed with the expansion center of the boiler body, and other structures and methods are the same as those of the third embodiment.
The fifth concrete implementation mode: the embodiment is described with reference to fig. 1, fig. 6 and fig. 7, and the one-way supporting seat 33 of the large-capacity longitudinally-arranged corner tube boiler of the embodiment includes a first arc-shaped supporting plate 33-1, a first upper column 33-2, a first lower column 33-3, a first roller pair 33-4, a one-way column bottom plate 33-6, three limiting channel steels 33-5 and a plurality of one-way column auxiliary supporting plates 33-7, the first roller pair 33-4 includes a plurality of first rollers and two first connecting plates, the outer arc surface of the first arc-shaped supporting plate 33-1 is installed at the top end of the first upper column 33-2, the bottom end of the first upper column 33-2 is provided with a flat plate, the three limiting channel steels 33-5 are installed on the top plate at the top end of the first lower column 33-3, and the three limiting channel steels 33-5 form a frame body with an opening, the unidirectional upright post bottom plate 33-6 is arranged at the bottom end of the first lower upright post 33-3, a plurality of unidirectional upright post auxiliary supporting plates 33-7 are arranged on the outer circular surface of the first lower upright post 33-3 along the radial direction, each unidirectional upright post auxiliary supporting plate 33-7 is respectively fixedly connected with the unidirectional upright post bottom plate 33-6 and the first lower upright post 33-3, a plurality of first rollers are arranged on two first connecting plates side by side, a first roller pair 33-4 and a flat plate at the bottom end of the first upper upright post 33-2 are arranged in a frame body consisting of three limiting channel steel 33-5 at the top end of the first lower upright post 33-3, the lower header pipe body below the center of the front left downcomer 6, the lower header pipe body below the center of the front right downcomer 7 and the lower header pipe body below the center of the rear middle downcomer 18 are respectively supported by the inner cambered surface of a first cambered supporting plate 33-1. The sliding direction of the first roller pair 33-4 is the same as the opening direction of the frame body formed by the three limiting channel steel 33-5, and other structures and methods are the same as those of the third specific embodiment.
The sixth specific implementation mode: referring to fig. 1, 8 and 9 for explaining the present embodiment, the multi-directional support base 32 of the present embodiment includes a second arc-shaped support plate 32-1, a second upper column 32-2, a second lower column 32-3, a multi-directional column bottom plate 32-6, a middle cross plate 32-5, two second roller pairs 32-4 and a plurality of multi-directional column auxiliary support plates 32-7, each second roller pair 32-4 includes a plurality of second rollers and two second connecting plates, the outer arc surface of the second arc-shaped support plate 32-1 is installed at the top end of the second upper column 32-2, the bottom end of the second upper column 32-2 is installed with a flat plate, the top end of the second lower column 32-3 is installed with a top plate, the multi-directional column bottom plate 32-6 is installed at the bottom end of the second lower column 32-3, a plurality of multi-directional upright post auxiliary supporting plates 32-7 are arranged on the outer circular surface of the second lower upright post 32-3 along the radial direction, each multi-directional upright post auxiliary supporting plate 32-7 is respectively fixedly connected with a multi-directional upright post bottom plate 32-6 and a second lower upright post 32-3, a plurality of second rollers are arranged on two second connecting plates side by side, a middle transverse plate 32-5 is arranged between the second upper upright post 32-2 and the second lower upright post 32-3, a second roller pair 32-4 is arranged between the second upper upright post 32-2 and the middle transverse plate 32-5, a second roller pair 32-4 is arranged between the middle transverse plate 32-5 and the second lower upright post 32-3, the axis of each second roller on the second roller pair 32-4 above the middle transverse plate 32-5 is vertical to the axis of each second roller below the middle transverse plate 32-5, the lower header pipe body below the center of the rear left downcomer 16 and the lower header pipe body below the center of the rear right downcomer 17 are respectively supported by the inner cambered surface of a second cambered supporting plate 32-1. Other structures and methods are the same as those of the third embodiment.
The seventh embodiment: the present embodiment is described with reference to fig. 1 to 4, and the rear heating surface of the large-capacity vertical-type corner tube boiler according to the present embodiment includes an air preheater 21 and an economizer 22, and the air preheater 21 is installed above the economizer 22. Other structures and methods are the same as those of the first embodiment.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 1 to 4, and the smoke exhaust mechanism of the large-capacity longitudinally-arranged corner tube boiler according to the present embodiment includes an inertia separation dust removal device 23, a bypass flue 26, a smoke regulation device 28, and an SCR denitration mechanism 29, where the bypass flue 26 is communicated with a bypass flue outlet window 27, a main flue outlet flue is arranged at the bottom of the convection flue, the main flue outlet flue is communicated with the bypass flue 26, the outlet flue is communicated with the bypass flue 26 and is provided with the SCR denitration mechanism 29 and the inertia separation dust removal device 23, and an air preheater 21 and an economizer 22 are installed above the inertia separation dust removal device 23. The other structures and methods are the same as those of the seventh embodiment.
Claims (8)
1. A large-capacity longitudinally-arranged corner tube boiler is characterized in that: the boiler comprises a boiler body, a smoke exhaust mechanism and a tail heating surface, wherein the boiler body is connected with the tail heating surface through the smoke exhaust mechanism, and the boiler body comprises a boiler barrel (1), a front arch water-cooled wall (2), a rear arch water-cooled wall (3), a side water-cooled wall, a flue water-cooled wall (19), an eduction tube (4), a steam collecting tube (5), a connecting tube (15), a burnout chamber (24), a flag-type convection screen (25), a convection flue, a left grate (9), a right grate (10), a supporting seat assembly, an upper header, a lower header, a front left downcomer (6), a front middle downcomer (8), a front right downcomer (7), a rear left downcomer (16), a rear middle downcomer (18) and a rear right downcomer (17); a front left downcomer (6), a front middle downcomer (8) and a front right downcomer (7) are arranged at the front end of the boiler body, a rear left downcomer (16), a rear middle downcomer (18) and a rear right downcomer (17) are arranged at the rear end of the boiler body, the front middle downcomer (8) and the rear middle downcomer (18) are arranged at the middle position of the boiler body, the boiler barrel (1) is arranged at the middle upper position of the boiler body through a connecting pipe (15), the front middle downcomer (8) and the rear middle downcomer (18), a front arch water wall (2) is arranged at the front end of the boiler body, a rear arch water wall (3) is arranged at the middle part and the rear side of the boiler body, side water walls are arranged at the two sides of the boiler body, a flue water wall is arranged at the rear end of the boiler body, the front arch water wall (2), the rear arch water wall (3), the side water walls, a flue wall (19), the front left downcomer (6), The front middle downcomer (8), the front right downcomer (7), the rear left downcomer (16), the rear middle downcomer (18) and the rear right downcomer (17) are respectively communicated with the boiler barrel (1) through a connecting pipe (15), a steam collecting pipe (5) and an eduction pipe (4), a lower header is arranged at the lower part of the boiler body, convection current flue sets up in boiler body rear end, flag formula convection current screen (25) are installed in the convection current flue, burn ember room (24) and set up in the convection current flue top, burn ember room (24) rear portion is equipped with bypass flue outlet window (27), left grate (9) are installed in preceding left downcomer (6), preceding downtake (8) in, between downtake (18) in back left downcomer (16) and the back, right grate (10) are installed in preceding downtake (8) in the front, preceding right downtake (7), downtake (18) and back right downcomer (17) in the back between, the setting of support seat subassembly is in boiler body bottom.
2. The large capacity longitudinally-arranged corner tube boiler according to claim 1, wherein: the drum (1) is arranged above the front and middle downcomers (8) and the rear and middle downcomers (18) through an upper header.
3. The large capacity longitudinally-arranged corner tube boiler according to claim 1, wherein: the supporting seat assembly comprises a fixed supporting seat (31), two multi-directional supporting seats (32) and three one-way supporting seats (33); the fixed supporting seat (31) is arranged below the front middle descending pipe (8), the one-way supporting seat (33) is respectively arranged below the front left descending pipe (6), the front right descending pipe (7) and the rear middle descending pipe (18), and the multi-way supporting seat (32) is respectively arranged below the rear left descending pipe (16) and the rear right descending pipe (17).
4. The large-capacity longitudinally-arranged corner tube boiler according to claim 3, wherein: the fixed supporting seat (31) comprises a fixed upright post (31-1), a bottom plate (31-2), a fixed upright post arc supporting plate (31-4) and a plurality of fixed upright post auxiliary supporting plates (31-3), the outer arc surface of the fixed upright post arc-shaped supporting plate (31-4) is fixedly arranged at the top end of the fixed upright post (31-1), the bottom end of the fixed upright post (31-1) is arranged on the bottom plate (31-2), a plurality of fixed upright post auxiliary supporting plates (31-3) are arranged on the outer circular surface of the fixed upright post (31-1) along the radial direction, each auxiliary supporting plate (31-3) is fixedly connected with the fixed upright post (31-1) and the bottom plate (31-2), and the inner arc surface of the fixed upright post arc-shaped supporting plate (31-4) is propped against the expansion center of the lower header pipe body below the front middle down pipe (8).
5. The large-capacity longitudinally-arranged corner tube boiler according to claim 3, wherein: the unidirectional supporting seat (33) comprises a first arc-shaped supporting plate (33-1), a first upper upright post (33-2), a first lower upright post (33-3), a first roller pair (33-4), a unidirectional upright post bottom plate (33-6), three limiting channel steel (33-5) and a plurality of unidirectional upright post auxiliary supporting plates (33-7), the first roller pair (33-4) comprises a plurality of first rollers and two first connecting plates, the outer arc surface of the first arc-shaped supporting plate (33-1) is installed at the top end of the first upper upright post (33-2), a flat plate is installed at the bottom end of the first upper upright post (33-2), the three limiting channel steel (33-5) are installed on the top plate at the top end of the first lower upright post (33-3), the three limiting channel steel (33-5) form a frame body with one open end, the unidirectional upright post bottom plate (33-6) is installed at the bottom end of the first lower upright post (33-3), a plurality of unidirectional upright post auxiliary supporting plates (33-7) are arranged on the outer circular surface of the first lower upright post (33-3) along the radial direction, each unidirectional upright post auxiliary supporting plate (33-7) is respectively fixedly connected with a unidirectional upright post bottom plate (33-6) and the first lower upright post (33-3), a plurality of first rollers are arranged on two first connecting plates side by side, a first roller pair (33-4) and a flat plate at the bottom end of the first upper upright post (33-2) are arranged in a frame body formed by three limiting channel steel (33-5) at the top end of the first lower upright post (33-3), the lower header pipe body below the center of the front left downcomer (6), the lower header pipe body below the center of the front right downcomer (7) and the lower header pipe body below the center of the rear middle downcomer (18) are respectively supported by the inner cambered surface of a first cambered supporting plate (33-1).
6. The large-capacity longitudinally-arranged corner tube boiler according to claim 3, wherein: the multidirectional supporting seat (32) comprises a second arc-shaped supporting plate (32-1), a second upper upright (32-2), a second lower upright (32-3), a multidirectional upright bottom plate (32-6), a middle transverse plate (32-5), two second roller pairs (32-4) and a plurality of multidirectional upright auxiliary supporting plates (32-7), each second roller pair (32-4) comprises a plurality of second rollers and two second connecting plates, the outer arc surface of the second arc-shaped supporting plate (32-1) is installed at the top end of the second upper upright (32-2), the bottom end of the second upper upright (32-2) is provided with a flat plate, the top end of the second lower upright (32-3) is provided with a top plate, the multidirectional upright bottom plate (32-6) is installed at the bottom end of the second lower upright (32-3), and the plurality of multidirectional upright auxiliary supporting plates (32-7) are radially arranged on the outer arc surface of the second lower upright (32-3) On the upper part, each multi-directional upright post auxiliary supporting plate (32-7) is respectively and fixedly connected with a multi-directional upright post bottom plate (32-6) and a second lower upright post (32-3), a plurality of second rollers are arranged on two second connecting plates side by side, a middle transverse plate (32-5) is arranged between a second upper upright post (32-2) and the second lower upright post (32-3), a second roller pair (32-4) is arranged between the second upper upright post (32-2) and the middle transverse plate (32-5), a second roller pair (32-4) is arranged between the middle transverse plate (32-5) and the second lower upright post (32-3), the axis of each second roller on the second roller pair (32-4) above the middle transverse plate (32-5) is vertical to the axis of each second roller below the middle transverse plate (32-5), the lower header pipe body below the center of the rear left downcomer (16) and the lower header pipe body below the center of the rear right downcomer (17) are respectively supported by the inner cambered surface of a second cambered supporting plate (32-1).
7. The large capacity longitudinally-arranged corner tube boiler according to claim 1, wherein: the tail heating surface comprises an air preheater (21) and an economizer (22), and the air preheater (21) is arranged above the economizer (22).
8. The large capacity longitudinally-arranged corner tube boiler according to claim 7, wherein: the smoke exhaust mechanism comprises an inertia separation dust removal device (23), a bypass flue (26), a smoke regulation device (28) and an SCR denitration mechanism (29), the bypass flue (26) is communicated with a bypass flue outlet window (27), a smoke main outlet flue is arranged at the bottom of the convection flue and is communicated with the bypass flue (26), the outlet flue is communicated with the bypass flue (26) and is provided with the SCR denitration mechanism (29) and the inertia separation dust removal device (23), and an air preheater (21) and an economizer (22) are arranged above the inertia separation dust removal device (23).
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Cited By (1)
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