Shell boiler with welded smoke tube and shell

Abstract

The utility model relates to the technical field of boilers, in particular to a boiler shell boiler with smoke tubes welded with a boiler shell, which comprises a boiler body, a boiler furnace arranged on the lower portion inside the boiler body, a corrugated structure of the outer wall of the boiler furnace, a reversal chamber connected to one end of the boiler furnace, and a plurality of threaded smoke tubes arranged on the upper portion inside the boiler body. A front tube plate and a rear tube plate are installed at one end of the threaded smoke tube, the two ends of the threaded smoke tube are welded to the front tube plate and the rear tube plate respectively, and diagonal draw bars are installed in the boiler body and close to the upper portions of the two ends. According to the boiler shell boiler with the smoke pipe and the boiler shell welded, through structural optimization and innovative design of the boiler furnace and the smoke pipe, the heat efficiency and performance of the boiler shell boiler are remarkably improved. The furnace pipe of the corrugated structure increases the heating area and promotes sufficient combustion of fuel, and therefore the heat energy utilization rate is improved. Meanwhile, due to the design of the threaded smoke pipes, the smoke generates a strong vortex effect in the flowing process, heat exchange between the smoke and the inner wall of the boiler shell is enhanced, and the heat energy transfer effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a boiler shell boiler in which a smoke pipe is welded to a boiler shell. Background Art

[0002] In the existing industrial heating and energy supply technology, shell boilers are an important heat energy conversion equipment, widely used in various industrial production and civil fields. The main function of shell boilers is to generate heat energy by burning fuel, transfer the heat energy to water, heat it and convert it into steam, and then provide the required heat energy or power for various processes or equipment.

[0003] The design of traditional shell boilers usually includes key components such as furnace body, furnace, smoke pipe, etc. The furnace is the combustion chamber, and its structure directly affects the combustion efficiency and heat transfer effect; while the smoke pipe is the main channel for heat transfer, and its structure and layout have an important impact on the thermal efficiency and performance of the boiler.

[0004] However, there are some shortcomings in the design of traditional shell boilers. For example, the unreasonable structural design of the furnace leads to incomplete combustion and low thermal energy utilization; the unreasonable layout and structural design of the smoke pipe lead to poor flue gas flow and poor heat energy transfer. These problems not only affect the thermal efficiency and performance of the shell boiler, but also increase operating costs and energy consumption. Utility Model Content

[0005] The purpose of the utility model is to provide a shell boiler with a smoke pipe welded to the shell, so as to solve some design deficiencies of the traditional shell boiler mentioned in the above background technology. For example, the unreasonable structural design of the furnace leads to incomplete combustion and low thermal energy utilization; the unreasonable layout and structural design of the smoke pipe lead to poor flue gas flow and poor thermal energy transfer effect. These problems not only affect the thermal efficiency and performance of the shell boiler, but also increase the operating cost and energy consumption.

[0006] To achieve the above-mentioned purpose, the utility model provides a shell boiler in which a smoke tube is welded to a boiler shell, comprising a furnace body, a furnace core is arranged at the lower part of the interior of the furnace body, the outer wall of the furnace core is a corrugated structure, one end of the furnace core is connected to a reburning chamber, a plurality of threaded smoke tubes are arranged at the upper part of the interior of the furnace body, a front tube plate and a rear tube plate are installed at both ends of the furnace body near the threaded smoke tubes, the two ends of the threaded smoke tubes are respectively welded to the front tube plate and the rear tube plate, an inclined rod is installed near the upper part of the two ends of the interior of the furnace body, a straight rod is installed between the outer wall of one side of the reburning chamber and the inner wall of the furnace body, and a front smoke box is installed at one end of the furnace body.

[0007] Preferably, an explosion-proof door is installed at one end of the furnace body.

[0008] Preferably, a sewage pipe seat is connected to the bottom of the furnace body.

[0009] Preferably, the threaded smoke pipe includes a long threaded smoke pipe and a short threaded smoke pipe, one end of the short threaded smoke pipe is connected to the backfire chamber, and the other end is connected to the front smoke box, and one end of the long threaded smoke pipe is connected to the front smoke box, and the other end is connected to the outside of the furnace body.

[0010] Preferably, a pressure gauge pipe seat, a lifting lug, a safety valve pipe seat and a main steam valve pipe seat are sequentially installed on the top of the furnace body.

[0011] Preferably, a steam-water separator is installed on the top inner wall of the furnace body.

[0012] Preferably, a manhole is installed on the top of the furnace body.

[0013] Preferably, a water level gauge tube seat is installed on one side outer wall of the furnace body.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the shell boiler with the smoke tube welded to the shell, the thermal efficiency and performance of the shell boiler are significantly improved through the structural optimization and innovative design of the furnace and smoke tube. The corrugated structure of the furnace increases the heating area, promotes the full combustion of the fuel, and thus improves the utilization rate of thermal energy. At the same time, the design of the threaded smoke tube makes the flue gas produce a strong vortex effect during the flow process, enhances the heat exchange between the flue gas and the inner wall of the shell, and further improves the heat energy transfer effect. By rationally arranging the inclined rods and straight rods, the structural stability of the furnace body is enhanced, the influence of thermal stress on the boiler is reduced, and the service life is extended. The setting of safety accessories such as explosion-proof doors, drain pipe seats, and pressure gauge pipe seats ensures the safe and reliable operation of the boiler. The configuration of auxiliary equipment such as steam-water separators and manholes further improves the practicality and convenience of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0017] Figure 2 It is a side view structural schematic diagram of the utility model;

[0018] Figure 3 It is a front view structural schematic diagram of the utility model.

[0019] The meaning of each number in the figure is:

[0020] 1. Furnace body; 11. Front tube sheet; 12. Pressure gauge seat; 13. Lifting lug; 14. Safety valve seat; 15. Main steam valve seat; 16. Steam-water separator; 17. Manhole; 18. Rear tube sheet; 19. Water level gauge seat; 110. Inclined rod; 111. Water inlet pipe; 112. Drain pipe seat; 113. Explosion-proof door; 2. Straight rod; 3. Threaded smoke pipe; 31. Long threaded smoke pipe; 32. Short threaded smoke pipe; 4. Backdraft chamber; 5. Furnace core; 6. Front smoke box. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides a shell boiler in which a smoke tube is welded to a shell. Figure 1-Figure 3 As shown, it includes a furnace body 1, a furnace core 5 is arranged at the lower part of the furnace body 1, the outer wall of the furnace core 5 is a corrugated structure, one end of the furnace core 5 is connected to the reburning chamber 4, a plurality of threaded smoke pipes 3 are arranged on the upper part of the furnace body 1, a front tube plate 11 and a rear tube plate 18 are installed at both ends of the furnace body 1 near the threaded smoke pipes 3, the two ends of the threaded smoke pipes 3 are respectively welded to the front tube plate 11 and the rear tube plate 18, so as to facilitate the positioning of the threaded smoke pipes 3, an inclined rod 110 is installed near the upper part of the two ends of the furnace body 1, a straight rod 2 is installed between the outer wall of one side of the reburning chamber 4 and the inner wall of the furnace body 1, so as to ensure the support of the inner wall of the furnace body 1, improve its strength and avoid deformation during use, a front smoke box 6 is installed at one end of the furnace body 1 for caching smoke, and a water inlet pipe 111 is connected to the outer side of the furnace body 1 for passing external cold water into the furnace body 1.

[0023] In this embodiment, an explosion-proof door 113 is installed at one end of the furnace body 1 to achieve an explosion-proof effect.

[0024] Specifically, the bottom of the furnace body 1 is connected with a sewage pipe seat 112 for discharging sewage.

[0025] Furthermore, the threaded smoke pipe 3 includes a long threaded smoke pipe 31 and a short threaded smoke pipe 32. One end of the short threaded smoke pipe 32 is connected to the backfire chamber 4, and the other end is connected to the front smoke box 6. One end of the long threaded smoke pipe 31 is connected to the front smoke box 6, and the other end is connected to the outside of the furnace body 1. The smoke is transported through the threaded smoke pipe 3 and heat exchanged with external water, thereby ensuring the heat exchange effect of water.

[0026] Furthermore, a pressure gauge pipe seat 12, a lifting lug 13, a safety valve pipe seat 14 and a main steam valve pipe seat 15 are installed on the top of the furnace body 1 in sequence. The safety valve pipe seat 14 is used to adjust the air pressure to ensure safety, the lifting lug 13 is convenient for lifting, and the pressure gauge pipe seat 12 is connected to an external pressure gauge for pressure monitoring.

[0027] Furthermore, a steam-water separator 16 is installed on the top inner wall of the furnace body 1 to separate steam from water and realize the outward transportation of steam.

[0028] Furthermore, a manhole 17 is installed on the top of the furnace body 1 to facilitate manual entry for maintenance operations.

[0029] Furthermore, a water level gauge tube seat 19 is installed on one side outer wall of the furnace body 1 for monitoring the water level.

[0030] When the shell boiler with the smoke tube welded to the shell of the utility model is used, fuel is first supplied to the furnace 5 through the combustion equipment, and the fuel burns in the furnace 5 to generate high-temperature flue gas. Since the outer wall of the furnace 5 adopts a corrugated structure, the heating area is increased, the full combustion of the fuel is promoted, and the thermal energy utilization rate is improved. The high-temperature flue gas enters the reburning chamber 4 from one end of the furnace 5, and further burns in the reburning chamber 4, so that the combustible components in the flue gas are fully utilized. Then, the flue gas enters the threaded smoke tube 3 above the furnace body 1. The threaded smoke tube 3 includes a long threaded smoke tube 31 and a short threaded smoke tube 32, which are fixed inside the furnace body 1 through the front tube plate 11 and the rear tube plate 18 to form a stable flue gas channel. In the threaded smoke tube 3, the smoke exchanges heat with the water outside the tube and transfers heat energy to the water. Due to the special structure of the threaded smoke tube 3, the smoke produces a strong vortex effect during the flow process, which enhances the heat exchange effect between the smoke and water and improves the heat energy transfer efficiency.

[0031] After heat exchange, the flue gas is discharged from the other end of the threaded smoke pipe 3 out of the furnace body 1 and finally discharged into the atmosphere. At the same time, the water in the furnace body 1 is gradually heated and converted into steam after absorbing heat energy. After the steam and water are separated by the steam-water separator 16, the steam is output from the top of the furnace body 1 and supplied to various processes or equipment.

[0032] During the operation of the boiler, the safe and reliable operation of the boiler is ensured by monitoring and adjusting the safety accessories such as the explosion-proof door 113, the pressure gauge pipe seat 12, and the safety valve pipe seat 14. The sewage pipe seat 112 is used to discharge sewage regularly to keep the boiler water clean. The manhole 17 and the water level gauge pipe seat 19 are convenient for manual access for maintenance and water level monitoring.

[0033] Finally, it should be noted that the electronic components in XXX, etc. in this embodiment are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components are connected by wires respectively, and the specific connection means should refer to the working sequence between the electrical components in the above-mentioned working principle to complete the electrical connection, which are all well-known technologies in the art.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A shell boiler in which a smoke tube is welded to a shell, comprising a furnace body (1), characterized in that: A furnace core (5) is arranged at the lower part of the furnace body (1), the outer wall of the furnace core (5) is a corrugated structure, one end of the furnace core (5) is connected to a reburning chamber (4), a plurality of threaded smoke pipes (3) are arranged at the upper part of the furnace body (1), a front tube plate (11) and a rear tube plate (18) are installed at the two ends of the threaded smoke pipe (3) near the furnace body (1), the two ends of the threaded smoke pipe (3) are respectively welded to the front tube plate (11) and the rear tube plate (18), an inclined rod (110) is installed at the upper part of the two ends of the furnace body (1), a straight rod (2) is installed between the outer wall of one side of the reburning chamber (4) and the inner wall of the furnace body (1), and a front smoke box (6) is installed at one end of the furnace body (1).

2. The shell boiler with smoke pipe welded to shell according to claim 1, characterized in that: An explosion-proof door (113) is installed at one end of the furnace body (1).

3. The shell boiler with smoke tube welded to shell according to claim 1, characterized in that: The bottom of the furnace body (1) is connected to a sewage pipe seat (112).

4. The shell boiler with smoke pipe welded to shell according to claim 1, characterized in that: The threaded smoke pipe (3) comprises a long threaded smoke pipe (31) and a short threaded smoke pipe (32); one end of the short threaded smoke pipe (32) is connected to the backfire chamber (4), and the other end is connected to the front smoke box (6); one end of the long threaded smoke pipe (31) is connected to the front smoke box (6), and the other end is connected to the outside of the furnace body (1).

5. The shell boiler with smoke tube welded to shell according to claim 1, characterized in that: The top of the furnace body (1) is sequentially mounted with a pressure gauge pipe seat (12), a lifting lug (13), a safety valve pipe seat (14) and a main steam valve pipe seat (15).

6. The shell boiler with smoke tube welded to shell according to claim 1, characterized in that: A steam-water separator (16) is installed on the top inner wall of the furnace body (1).

7. The shell boiler with smoke tube welded to shell according to claim 1, characterized in that: A manhole (17) is installed on the top of the furnace body (1).

8. The shell boiler with smoke tube welded to shell according to claim 1, characterized in that: A water level gauge pipe seat (19) is installed on one side outer wall of the furnace body (1).

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