CN211739041U

CN211739041U - Full stay-free boiler with arch structure

Info

Publication number: CN211739041U
Application number: CN201922459422.6U
Authority: CN
Inventors: 王辉; 修天润; 梁继成; 徐甫
Original assignee: Liaoning Changsheng Energy Saving Boiler Co ltd
Current assignee: Liaoning Changsheng Energy Saving Boiler Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-23
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a do not have bracing formula boiler entirely with domes, concretely relates to boiler equipment field, including the pot shell, the inside flashback chamber that is equipped with of pot shell, the inside inner bag that is equipped with of flashback chamber, the fixed tube sheet that is equipped with of pot shell one end, the tube sheet includes convex plate and flat board, dull and stereotyped fixed convex plate one end of locating, the inner bag includes straight section board and buckled plate, straight section board and buckled plate set up a plurality of groups in turn, the inside fixed high temperature tube sheet that is equipped with of flashback chamber and feed water distributing pipe are located high temperature tube sheet top, high temperature tube sheet is located the inner bag top, high temperature tube sheet bottom is equipped with the scouring pipe. The utility model discloses can improve the holistic fail safe nature of boiler, flexible end plate cooperatees with flexible stove courage and the little screw-thread tobacco pipe of rigidity, obviously reduces whole rigidity, effectively reduces different components and arouses the junction welding seam, pulls the thermal stress on limit because of the wall temperature difference is great.

Description

Full stay-free boiler with arch structure

Technical Field

The utility model relates to a boiler equipment field, more specifically say, the utility model relates to a do not have formula boiler that struts entirely with domes.

Background

The horizontal tube plates at the front and the rear of the existing boiler shell need to be provided with a plurality of diagonal draw bars, the rear part of the flashback chamber is connected with the rear flat tube plate by a plurality of short draw bars, the lower part of the front tube plate of the boiler with larger capacity is provided with a manhole, the left and the right of the boiler are connected with the front and the rear flat tube plates by the long draw bars, the whole rigidity of the boiler is obviously enhanced by the draw bars, the welding seams of the draw bars can generate larger thermal stress, concentrated stress caused by process residual stress and shape change, particularly, the dead weight of the long draw bars is larger, if the long draw bars are longer and the middle support is improper, the draw bars can generate vibration when transportation jolts, and fatigue cracking of the welding seams at the ends of the draw bars can be caused. The water capacity of the boiler shell in the boiler pressure element is many times larger than that of other elements, the rupture result is very serious, some stretching pieces need to be welded in the boiler shell, the manufacturing process and the monitoring workload are large and complex, the possibility of generating quality problems is increased, and a large number of stretching pieces are arranged in the boiler shell, so that the space in the boiler is narrower, and the trouble is brought to the operation and the inspection in the boiler.

For the reasons, the improvement and the cancellation of the bracing structure of the horizontal internal combustion boiler shell boiler become important technical measures and directions for optimizing the structure, reducing hidden dangers and improving the safety performance of the boiler shell boiler, and also become the subject and task of the structural innovation of the internal combustion boiler.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a do not have bracing formula boiler entirely with domes, the utility model aims to solve the technical problem that: how to cancel the bracing piece and promote the security performance of boiler.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a do not have stay formula boiler entirely with domes, includes the pot shell, the inside room of being equipped with back of burning of pot shell, the inside inner bag that is equipped with of room of back burning, the fixed tube sheet that is equipped with of pot shell one end, the tube sheet includes convex plate and flat board, dull and stereotyped fixed convex plate one end of locating, the inner bag includes straight section board and buckled plate, the room of back burning is inside to be fixed to be equipped with high temperature tube sheet and to supply water distributing pipe and be located high temperature tube sheet top, high temperature tube sheet is located the inner bag top, high temperature tube sheet bottom is equipped with the scouring pipe, and the scouring pipe is located inner bag one end, the fixed wet return that is equipped with in scouring pipe one side, and the wet.

When in use, the flashback chamber adopts a cylindrical structure, is convenient for automatic welding, integrally cancels all stretching parts in the prior boiler, comprises a plurality of diagonal draw bars at the upper part, a plurality of short draw bars at the rear part and two thick long draw bars at the lower part, and does not have a plurality of reinforcing cross beams at the upper part and the lower part of the kidney-shaped flashback chamber, the application adopts a flexible end plate, the front end of a boiler shell adopts a tube plate, the rear end adopts an ellipsoidal seal head, the rear end of the flashback chamber also adopts a seal head, a new structure of the flashback chamber can be formed, an inner container is changed into discontinuous waves formed by combining a straight-section plate and a corrugated plate, namely a corrugated-straight-section-corrugated-straight-section, an external energy saver or a condenser is adopted, the thermal efficiency of the boiler can reach more than 97 percent, low nitrogen is discharged, the size of the inner container can be enlarged, the requirement of flue gas recirculation is met, the NOx discharge is lower than 30mg/m3, and the, the steam boiler adopts horizontal flow steam-water separation, the steam humidity can be lower than 0.5%, the flushing pipe and the water return pipe are combined, the high-temperature pipe plate can be flushed by returning water, and when the water quality is poor, the hole bridge of the high-temperature pipe plate can be prevented from cracking by adopting the measure.

In a preferred embodiment, the shell and one end of the flashback chamber, which is far away from the tube plate, are both fixedly provided with end sockets, and the end sockets are arranged in an ellipsoidal shape, so that the welding of the end sockets is facilitated.

In a preferred embodiment, the boiler shell and the flashback chamber are both arranged in a cylindrical shape, and an economizer is arranged outside the boiler shell, so that the thermal efficiency of the boiler can reach more than 97%.

In a preferred embodiment, the straight-section plates and the corrugated plates are alternately arranged in a plurality of groups, and the corrugated plates are arranged in a V shape, so that the liner has better flexibility.

In a preferred embodiment, the convex plate and the flat plate are integrally arranged, and the flat plate is provided with an opening to facilitate the connection of the whole tube plate.

In a preferred embodiment, the top of one end of the boiler shell, which is far away from the tube plate, is provided with an air outlet, and the air outlet is communicated with the back combustion chamber, so that steam is conveniently discharged.

In a preferred embodiment, the water outlet of the flushing pipe is arranged towards the high-temperature tube plate, and the flushing pipe is arranged in a U shape, so that the flushing of the high-temperature tube plate is facilitated.

The utility model discloses a technological effect and advantage:

1. the utility model can improve the safety and reliability of the whole boiler, the flexible end plate is matched with the flexible furnace pipe and the threaded smoke pipe with small rigidity, the whole rigidity is obviously reduced, and the thermal stress of welding seams and edge wrenching at the joints caused by large wall temperature difference of different elements is effectively reduced;

2. the utility model discloses can simplify the part, reduce the operation technology volume, reduce the prison and examine node stay spare tip welding seam, operation, maintenance and maintenance in the pot shell of being convenient for.

Drawings

Fig. 1 is a schematic view of the overall cross-sectional structure of the present invention.

Fig. 2 is a schematic structural diagram of the front end of the flashback chamber of the present invention.

Fig. 3 is a schematic diagram of the tube plate structure of the present invention.

Fig. 4 is a schematic view of the sectional structure of the inner container of the present invention.

Fig. 5 is a schematic view of the horizontal flow steam-water separation of the present invention.

Fig. 6 is a schematic view of the high-temperature tube plate washed by the backwater.

Fig. 7 is the schematic view of the sectional structure of the sealing head of the present invention.

The reference signs are: 1 boiler shell, 2 combustion chambers, 3 inner containers, 31 straight plates, 32 corrugated plates, 4 tube plates, 41 convex plates, 42 flat plates, 5 end sockets, 6 air outlets, 7 high-temperature tube plates, 8 water supply distribution tubes, 9 flushing tubes and 10 water return tubes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a do not have stay formula boiler entirely with domes, including

pot shell

1, 1 inside flashback chamber 2 that is equipped with of pot shell, 2 inside inner bags 3 that are equipped with of flashback chamber, 1 one end of pot shell is fixed and is equipped with tube sheet 4, tube sheet 4 includes convex plate 41 and flat board 42, flat board 42 is fixed and is located convex plate 41 one end, inner bag 3 is including straight section board 31 and buckled

plate

32, 2 inside fixed high temperature tube sheet 7 and the water distribution pipe 8 of being equipped with of flashback chamber and water distribution pipe 8 are located 7 tops of high temperature tube sheet, high temperature tube sheet 7 is located 3 tops of inner bag, 7 bottoms of high temperature tube sheet are equipped with scouring pipe 9, and scouring pipe 9 is located 3 one end of inner bag, scouring pipe 9 one side is fixed and is equipped with wet return 10, and wet return 10 passes through the water pump and connects outside wet return.

The boiler shell 1 and the end, far away from the tube plate 4, of the flashback chamber 2 are both fixedly provided with end sockets 5, and the end sockets 5 are arranged in an ellipsoidal shape.

The boiler shell 1 and the back combustion chamber 2 are both arranged in a cylindrical shape, and an energy saver is arranged outside the boiler shell 1.

The straight plate 31 and the corrugated plate 32 are alternately provided with a plurality of groups, and the corrugated plate 32 is arranged in a V shape.

The convex plate 41 and the flat plate 42 are integrally arranged, and the flat plate 42 is provided with an opening.

The top of one end of the boiler shell 1, which is far away from the tube plate 4, is provided with an air outlet 6, and the air outlet 6 is communicated with the combustion chamber 2.

The water outlet of the flushing pipe 9 is arranged towards the high-temperature tube plate 7, and the flushing pipe 9 is arranged in a U shape.

As shown in fig. 1-7, the embodiment is specifically that the flashback chamber 2 adopts a cylindrical structure, which is convenient for automatic welding, and integrally eliminates all stretching parts in the existing boiler, including a plurality of diagonal draw bars at the upper part, a plurality of short draw bars at the rear part, and two thick long draw bars at the lower part, and even without a plurality of reinforcing cross beams at the upper part and the lower part of the kidney-shaped flashback chamber, the application adopts a flexible end plate, the front end of the boiler shell 1 adopts a tube plate 4, the rear end adopts an ellipsoidal seal head 5, and the rear end of the flashback chamber 2 also adopts a seal head 5, so that a new structure of the flashback chamber can be formed, the inner container 3 is changed from the existing continuous wave, i.e. wave continuous wave, into the discontinuous wave combining a straight plate 31 and a corrugated plate 32, i.e. a corrugated-straight section, and an external economizer or condenser is adopted, so that the boiler can achieve more than 97 percent of low nitrogen heat efficiency, the discharge of NOx is lower than 30mg/m3, the steam boiler has low steam humidity, the steam boiler adopts horizontal flow steam-water separation, the steam humidity is lower than 0.5 percent, the flushing pipe 9 is combined with the return water pipe 10, the high-temperature tube plate 7 can be flushed by returning water, when the water quality is poor, the hole bridge of the high-temperature tube plate 7 can be prevented from cracking by adopting the measure, the whole safety and reliability of the boiler can be improved by the arrangement, the flexible end plate is matched with the flexible furnace liner and the threaded smoke pipe with small rigidity, the integral rigidity is obviously reduced, according to the characteristics of the internal combustion boiler, the thermal stress of welding seams and edge wrenching at the connecting part of different elements caused by large wall temperature difference is effectively reduced, the parts are simplified, the operation process quantity is reduced, the welding seams at the end part of the bracing piece of the monitoring node are reduced, and the operation, the maintenance and the verification in the.

The utility model discloses the theory of operation:

referring to the attached drawings 1-7 of the specification, the flashback chamber 2 adopts a cylindrical structure, is convenient for automatic welding, integrally cancels all stretching parts in the existing boiler, comprises a plurality of diagonal draw bars at the upper part, a plurality of short draw bars at the rear part and two thick long draw bars at the lower part, does not have a plurality of reinforcing cross beams at the upper part and the lower part of the kidney-shaped flashback chamber, adopts a flexible end plate, adopts a tube plate 4 at the front end of the boiler shell 1, adopts an ellipsoidal seal head 5 at the rear end, adopts a seal head 5 at the rear end of the flashback chamber 2, can form a new structure of the flashback chamber, changes the existing continuous wave, namely a wave continuous wave, into an interrupted wave combining a straight-section plate 31 and a corrugated plate 32, namely a corrugated-straight-section-corrugated-straight-section, adopts an external energy saver or a condenser, can ensure that the thermal efficiency of the boiler reaches more than 97 percent, discharges low nitrogen, can enlarge the size of the inner container 3 to meet the requirement, the NOx emission is lower than 30mg/m3, the steam humidity is low, the steam boiler adopts horizontal flow steam-water separation, the steam humidity can be lower than 0.5%, the flushing pipe 9 is combined with the water return pipe 10, the high-temperature tube plate 7 can be flushed by returning water, and when the water quality is poor, the hole bridge of the high-temperature tube plate 7 can be prevented from cracking by adopting the measure.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An all stay-free boiler with an arch structure, which comprises a boiler shell (1), and is characterized in that: a back combustion chamber (2) is arranged in the pot shell (1), an inner container (3) is arranged in the back combustion chamber (2), a tube plate (4) is fixedly arranged at one end of the boiler shell (1), the tube plate (4) comprises a convex plate (41) and a flat plate (42), the flat plate (42) is fixedly arranged at one end of the convex plate (41), the inner container (3) comprises a straight plate (31) and a corrugated plate (32), a high-temperature tube plate (7) and a feed water distribution pipe (8) are fixedly arranged in the combustion chamber (2), the feed water distribution pipe (8) is positioned at the top of the high-temperature tube plate (7), the high-temperature tube plate (7) is positioned at the top of the inner container (3), the bottom of the high-temperature tube plate (7) is provided with a flushing tube (9), and the flushing pipe (9) is positioned at one end of the inner container (3), a water return pipe (10) is fixedly arranged at one side of the flushing pipe (9), and the water return pipe (10) is connected with an external water return pool through a water pump.

2. The totally stayed-free boiler with an arch structure according to claim 1, wherein: the boiler shell (1) and the end, far away from the tube plate (4), of the flashback chamber (2) are fixedly provided with end sockets (5), and the end sockets (5) are arranged in an ellipsoidal shape.

3. The totally stayed-free boiler with an arch structure according to claim 1, wherein: the boiler shell (1) and the back combustion chamber (2) are both arranged in a cylindrical shape, and an energy saver is arranged outside the boiler shell (1).

4. The totally stayed-free boiler with an arch structure according to claim 1, wherein: straight section board (31) and buckled plate (32) set up a plurality of groups in turn, and buckled plate (32) set up for the V type.

5. The totally stayed-free boiler with an arch structure according to claim 1, wherein: the convex plate (41) and the flat plate (42) are integrally arranged, and the flat plate (42) is provided with an opening.

6. The totally stayed-free boiler with an arch structure according to claim 1, wherein: the top of one end, far away from the tube plate (4), of the boiler shell (1) is provided with an air outlet (6), and the air outlet (6) is communicated with the back combustion chamber (2).

7. The totally stayed-free boiler with an arch structure according to claim 1, wherein: the water outlet of the flushing pipe (9) is arranged towards the high-temperature tube plate (7), and the flushing pipe (9) is arranged in a U shape.