C-shaped vertical steam generator

Abstract

The utility model belongs to the technical field of steam generating equipment, and particularly relates to a C-shaped vertical steam generator which comprises a burner, a steam generator body and a waste heat recoverer, the steam generator body comprises an L-shaped outer cylinder and an inner fin smoke tube arranged in the outer cylinder, the outer cylinder is composed of a vertical tube and a transverse tube, and the vertical tube and the transverse tube are arranged in the outer cylinder. The upper end of the vertical pipe is connected with the left end of the waste heat recoverer, and the right end of the transverse pipe is connected with the combustor. The device is compact in structural layout, small in occupied space and suitable for being installed in narrow spaces such as staircases, roofs and basements.

Description

Technical field:

[0001] The utility model belongs to the technical field of steam generating equipment, in particular to a C-type vertical steam generator. Background technology:

[0002] A steam generator, also called a steam heat source machine (commonly known as a boiler), is a mechanical device that uses the thermal energy of fuel or other energy sources to heat water into hot water or steam.

[0003] Chinese invention patent CN112484009A discloses a gas steam boiler device, comprising: a gas burner; a steam generator disposed at the top of the gas burner and connected to the gas burner; a first waste heat recovery device connected to one side of the gas burner; a first heat collecting pipe device disposed in the first waste heat recovery device; a water pump device disposed at one side of the steam generator and connecting the steam generator and the first waste heat recovery device. A second waste heat recovery device connected to the first waste heat recovery device. A second heat collecting pipe device disposed in the second waste heat recovery device. The second waste heat recovery device is connected to the water pump device. A cooling device disposed at the bottom of the gas burner.

[0004] The disadvantages of the above-mentioned gas steam boiler device are that the structural layout is not compact enough, the floor space is large, and it is not suitable for installation in small spaces such as stairwells, roofs, and basements. Summary of the invention:

[0005] The utility model aims to provide a C-type vertical steam generator, which has a compact structure and layout, occupies a small space, and is suitable for installation in narrow spaces such as stairwells, roofs, basements, etc.

[0006] The utility model is achieved in this way:

[0007] A C-type vertical steam generator comprises a burner, a steam generator body and a waste heat recovery device. The steam generator body comprises an L-shaped outer cylinder and an inner finned smoke pipe arranged in the outer cylinder. The outer cylinder consists of a vertical pipe and a horizontal pipe. The upper end of the vertical pipe is connected to the left end of the waste heat recovery device, and the right end of the horizontal pipe is connected to the burner.

[0008] In the above-mentioned C-type vertical steam generator, the outer cylinder is cylindrical and is formed by rolling a steel plate.

[0009] In the above-mentioned C-type vertical steam generator, the burner is a low-nitrogen burner.

[0010] In the above-mentioned C-type vertical steam generator, a plurality of inner fin smoke tubes are provided and arranged in staggered rows to form a smoke tube bundle.

[0011] In the above-mentioned C-type vertical steam generator, a combustion chamber connected to the burner is provided at the lower end of the outer cylinder, a smoke outlet pipe is provided at the upper end of the vertical pipe, the lower end of the inner fin smoke pipe is connected to the combustion chamber and the upper end is connected to the smoke outlet pipe, the upper end of the smoke outlet pipe is connected to the left end of the waste heat recovery device, and a chimney interface is provided above the right end of the waste heat recovery device.

[0012] In the above-mentioned C-type vertical steam generator, the lower end of the smoke outlet pipe is in a conical shape with a smaller diameter at the top and a larger diameter at the bottom.

[0013] In the above-mentioned C-type vertical steam generator, the waste heat recovery device includes a shell arranged in the transverse direction and a plurality of inner finned tubes arranged in the shell, the left end of the inner finned tube is connected to the smoke outlet pipe, and the right end is connected to the chimney interface, a waste heat water storage chamber is arranged in the shell, a generator water storage chamber is arranged in the outer cylinder, the water outlet of the waste heat water storage chamber is connected to the water inlet of the generator water storage chamber through a water pipe, a water pump for transporting water in the waste heat water storage chamber to the generator water storage chamber and a check valve for preventing water in the generator water storage chamber from flowing to the waste heat water storage chamber are arranged on the water pipe, and a steam outlet connected to the generator water storage chamber is arranged above the outer cylinder.

[0014] In the above-mentioned C-type vertical steam generator, the shell is cylindrical.

[0015] In the above-mentioned C-type vertical steam generator, a plurality of inner fin tubes are provided.

[0016] In the above-mentioned C-type vertical steam generator, the water inlet of the waste heat water storage chamber is arranged above the shell, the water outlet of the waste heat water storage chamber is arranged below the shell, and the water inlet of the generator water storage chamber is arranged above the transverse pipe.

[0017] In the above-mentioned C-type vertical steam generator, the inner fin smoke tube includes an outer tube, and petal-shaped fins and positioning columns are arranged in the outer tube, and the positioning column is arranged in the center of the petal-shaped fins.

[0018] In the above-mentioned C-type vertical steam generator, an umbrella-shaped steam-water separation device is provided in the outer cylinder and is located above the inner fin smoke tube. The umbrella-shaped steam-water separation device includes a truncated cone-shaped guide plate which is open at the lower end and hollow, and a plurality of rib plates arranged in the truncated cone-shaped guide plate. A steam outlet is provided at the upper end of the truncated cone-shaped guide plate.

[0019] In the above-mentioned C-type vertical steam generator, the rib plate is arranged vertically and fixed in the truncated cone-shaped guide plate by welding.

[0020] In the above-mentioned C-type vertical steam generator, the minimum distance between the rib plate and the center of the truncated cone-shaped guide plate is smaller than the radius of the steam outlet.

[0021] In the above-mentioned C-type vertical steam generator, the umbrella-shaped steam-water separation device is mounted on the smoke outlet pipe and is located above the cone.

[0022] The outstanding advantages of the utility model compared with the prior art are:

[0023] 1. The utility model designs the outer cylinder of the steam generator body into an L shape, and connects the left end of the waste heat recovery device to the upper end of the vertical pipe, and the burner to the right end of the horizontal pipe, forming a C-shaped structure with a compact structure layout and small space occupation, which is suitable for installation in narrow spaces such as stairwells, roofs, basements, etc.

[0024] 2. The petal-shaped fins provided in the utility model can increase the heat exchange area of ​​the outer tube several times. When the size of the outer tube remains unchanged, the heat exchange area is greatly increased, and the heat exchange efficiency per unit volume of the heat exchange equipment is improved;

[0025] 3. The umbrella-shaped steam-water separation device provided in the utility model effectively improves the dryness of the steam, and the steam quality is good. Description of the drawings:

[0026] Figure 1 It is the front view of the utility model;

[0027] Figure 2 It is a cross-sectional view of the utility model;

[0028] Figure 3 It is a top view of the inner fin smoke tube of the utility model;

[0029] Figure 4 It is a cross-sectional view of the umbrella-shaped steam-water separation device of the utility model.

[0030] Figure numerals: 1. burner; 2. steam generator body; 2a. outer cylinder; 2b. inner finned smoke pipe; 2b1. outer tube; 2b2. petal-shaped fins; 2b3. positioning column; 3. waste heat recovery device; 3a. shell; 3b. inner finned tube; 4. combustion chamber; 5. smoke outlet pipe; 6. chimney interface; 7. waste heat water storage chamber; 8. generator water storage chamber; 9. water pipe; 10. steam outlet; 11. umbrella-shaped steam-water separation device; 11a. truncated cone guide plate; 11b. umbrella rib plate; 12. steam outlet. Specific implementation method:

[0031] The present invention is further described below with reference to specific embodiments. Figure 1 —4:

[0032] A C-type vertical steam generator comprises a burner 1, a steam generator body 2 and a waste heat recovery device 3, wherein the steam generator body 2 comprises an L-shaped outer cylinder 2a and an inner finned smoke pipe 2b arranged in the outer cylinder 2a, the outer cylinder 2a consists of a vertical pipe and a horizontal pipe, the upper end of the vertical pipe is connected to the left end of the waste heat recovery device 3, and the right end of the horizontal pipe is connected to the burner 1.

[0033] like Figure 1 , 2 As shown, the utility model designs the outer cylinder 2a of the steam generator body 2 into an L shape, and connects the left end of the waste heat recovery device 3 to the upper end of the vertical pipe, and the burner 1 is connected to the right end of the horizontal pipe, forming a C-shaped structure with a compact structure layout and small space occupation, which is suitable for installation in narrow spaces such as stairwells, roofs, basements, etc.

[0034] The utility model is suitable for the fields of textile printing and dyeing, winery, bean product processing, hotel and the like.

[0035] The utility model is provided with a waste heat recovery device 3, the exhaust gas temperature is low, the thermal efficiency is high, and energy is saved.

[0036] Furthermore, the outer cylinder 2a is cylindrical and is formed by rolling a steel plate.

[0037] Preferably, the burner 1 is a low-nitrogen burner.

[0038] In order to achieve a better heat exchange effect, the inner fin smoke tube 2b is provided with a plurality of them, and they are arranged in staggered rows to form a smoke tube bundle. High-temperature smoke flows inside the inner fin smoke tube 2b, and the steam-water mixture outside the inner fin smoke tube 2b performs heat exchange through the tube wall.

[0039] The specific connection structure of the outer cylinder 2a and the waste heat recovery device 3, and the waste heat recovery device 3: as shown in 1 and 2, the lower end of the outer cylinder 2a is provided with a combustion chamber 4 connected to the burner 1, and the upper end of the vertical pipe is provided with a smoke outlet pipe 5. The lower end of the inner fin smoke pipe 2b is connected to the combustion chamber 4, and the upper end is connected to the smoke outlet pipe 5. The upper end of the smoke outlet pipe 5 is connected to the left end of the waste heat recovery device 3, and a chimney interface 6 is provided above the right end of the waste heat recovery device 3.

[0040] In order to guide the smoke discharged from the inner fin smoke pipe 2b, the lower end of the smoke outlet pipe 5 is tapered with a smaller diameter at the top and a larger diameter at the bottom.

[0041] The structure of the waste heat recovery device 3: Figure 2As shown, the waste heat recovery device 3 includes a shell 3a arranged in the transverse direction and a plurality of inner finned tubes 3b arranged in the shell 3a, the left end of the inner finned tube 3b is connected to the smoke outlet pipe 5, and the right end is connected to the chimney interface 6, the shell 3a is provided with a waste heat water storage chamber 7, the outer cylinder 2a is provided with a generator water storage chamber 8, the water outlet of the waste heat water storage chamber 7 is connected to the water inlet of the generator water storage chamber 8 through a water pipe 9, the water pipe 9 is provided with a water pump for transporting the water in the waste heat water storage chamber 7 to the generator water storage chamber 8 and a check valve for preventing the water in the generator water storage chamber 8 from flowing to the waste heat water storage chamber 7, and the upper part of the outer cylinder 2a is provided with a steam outlet 10 connected to the generator water storage chamber 8. High-temperature flue gas flows in the inner finned tube 3b, and the water in the waste heat water storage chamber 7 is outside the inner finned tube 3b.

[0042] Due to the high-temperature heating, the pressure of the generator water storage chamber 8 is greater than the pressure of the waste heat water storage chamber 7, and the water in the waste heat water storage chamber 7 needs to be transported to the waste heat water storage chamber 7 by a water pump; the setting of the check valve can effectively prevent the water in the generator water storage chamber 8 from flowing to the waste heat water storage chamber 7.

[0043] The specific connection structure of the water pump, check valve and water pipe 9 is as follows: the water outlet of the waste heat water storage chamber 7 is connected to the water inlet of the water pump, the water outlet of the water pump is connected to the water inlet of the check valve, the water outlet of the check valve is connected to one end of the water pipe 9, and the other end of the water pipe 9 is connected to the water inlet of the generator water storage chamber 8.

[0044] Furthermore, the shell 3a is cylindrical.

[0045] Preferably, a plurality of inner fin tubes 3b are provided, and the heat exchange area is large, thereby improving the heat exchange capacity of the inner fin tubes 3b.

[0046] For better heating effect, Figure 2 As shown, the water inlet of the waste heat water storage chamber 7 is arranged above the shell 3a, the water outlet of the waste heat water storage chamber 7 is arranged below the shell 3a, and the water inlet of the generator water storage chamber 8 is arranged above the horizontal pipe.

[0047] The structure of the inner fin smoke tube 2b: Figure 3 As shown, the inner fin smoke tube 2b includes an outer tube 2b1, and the outer tube 2b1 is provided with a petal-shaped fin 2b2 and a positioning column 2b3, and the positioning column 2b3 is arranged at the center of the petal-shaped fin 2b2. High-temperature flue gas passes between the petal-shaped fin 2b2 and the petal-shaped fin 2b2 and the outer tube 2b1, and the petal-shaped fin 2b2 is in direct contact with the high-temperature flue gas, which increases the contact area between the inner fin smoke tube 2b and the high-temperature flue gas, that is, increases the heat exchange area. When the size of the outer tube 2b1 remains unchanged, the heat exchange area is greatly increased, and the heat exchange efficiency per unit volume of the heat exchange equipment is improved.

[0048] In order to separate the soda Figure 2 ,4 As shown, the outer cylinder 2a is provided with an umbrella-shaped steam-water separation device 11 located above the inner fin smoke pipe 2b, and the umbrella-shaped steam-water separation device 11 includes a hollow truncated cone-shaped flow guide plate 11a with an opening at the lower end and a plurality of umbrella ribs 11b arranged in the truncated cone-shaped flow guide plate 11a, and a steam outlet 12 is provided at the upper end of the truncated cone-shaped flow guide plate 11a. The upper part of the umbrella-shaped steam-water separation device 11 is a steam chamber, and the lower part is an evaporation chamber. The steam-water mixture enters the umbrella-shaped steam-water separation device 11 from the bottom to the top, and impacts the truncated cone-shaped flow guide plate 11a. The water vapor escapes from the steam outlet 12 and enters the steam chamber. Under the action of the impact force, the water adheres to the truncated cone-shaped flow guide plate 11a and the umbrella ribs 11b, and the small water droplets gather into large water droplets, which drip back to the evaporation chamber to absorb heat and evaporate again, thereby improving the dryness of the steam and improving the steam quality. The arrangement of the rib plate 11b increases the area in contact with water vapor, so that small water droplets are adsorbed and gathered into large water droplets and flow back to the bottom, where they continue to be heated, thereby increasing the steam dryness.

[0049] Furthermore, the rib plate 11b is arranged vertically and fixed in the truncated cone-shaped guide plate 11a by welding.

[0050] Under the condition that the escape of water vapor from the steam outlet 12 is not affected, the contact area between the rib plate 11 b and the water vapor is increased as much as possible, and the minimum distance between the rib plate 11 b and the center of the truncated cone-shaped guide plate 11 a is smaller than the radius of the steam outlet 12 .

[0051] The installation position of the umbrella-shaped steam-water separation device 11 is as follows: Figure 2 As shown, the umbrella-shaped steam-water separation device 11 is mounted on the smoke outlet pipe 5 and is located above the cone.

[0052] The working principle of the utility model is as follows: the burner 1 mixes a proper amount of fuel and air and sends them into the combustion chamber 4, where they are completely burned to release a large amount of heat and generate high-temperature flue gas, which is discharged in sequence through the inner finned smoke pipe 2b, the smoke outlet pipe 5, the inner finned tube 3b, and the chimney interface 6. Figure 2 As shown by the dotted arrow. The high-temperature flue gas in the combustion chamber 4 exchanges heat with the water in the generator water storage chamber 8 outside the combustion chamber 4, initially cools down, enters the inner finned smoke tube 2b, exchanges heat with the water in the generator water storage chamber 8 outside the inner finned smoke tube 2b, further cools down, and then enters the inner finned tube 3b, exchanges heat with the water in the waste heat water storage chamber 7 outside the inner finned tube 3b, releasing the latent heat in the flue gas. The water in the generator water storage chamber 8 is heated by the flue gas in the combustion chamber 4 and the flue gas in the inner finned smoke tube 2b to form water vapor, which is separated by the umbrella-shaped steam-water separation device 11 and flows out through the steam outlet 10, as shown in FIG. Figure 2 As shown by the solid arrow, the water in the waste heat water storage chamber 7 is heated by the flue gas of the inner fin tube 3b and flows to the generator water storage chamber 8 through the water pipe 9.

[0053] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A C-type vertical steam generator, comprising a burner (1), a steam generator body (2) and a waste heat recovery device (3), characterized in that: The steam generator body (2) comprises an L-shaped outer cylinder (2a) and an inner finned smoke pipe (2b) arranged in the outer cylinder (2a); the outer cylinder (2a) is composed of a vertical pipe and a horizontal pipe; the upper end of the vertical pipe is connected to the left end of the waste heat recovery device (3), and the right end of the horizontal pipe is connected to the burner (1).

2. A C-type vertical steam generator according to claim 1, characterized in that: The lower end of the outer cylinder (2a) is provided with a combustion chamber (4) connected to the burner (1), the upper end of the vertical pipe is provided with a smoke outlet pipe (5), the lower end of the inner fin smoke pipe (2b) is connected to the combustion chamber (4), and the upper end is connected to the smoke outlet pipe (5), the upper end of the smoke outlet pipe (5) is connected to the left end of the waste heat recovery device (3), and a chimney interface (6) is provided above the right end of the waste heat recovery device (3).

3. A C-type vertical steam generator according to claim 2, characterized in that: The waste heat recovery device (3) comprises a shell (3a) arranged in a transverse direction and a plurality of inner finned tubes (3b) arranged in the shell (3a); the left end of the inner finned tube (3b) is connected to a smoke outlet pipe (5), and the right end is connected to a chimney interface (6); a waste heat water storage chamber (7) is arranged in the shell (3a); a generator water storage chamber (8) is arranged in the outer cylinder (2a); the water outlet of the waste heat water storage chamber (7) is connected to the water inlet of the generator water storage chamber (8) through a water pipe (9); a water pump for transporting water in the waste heat water storage chamber (7) to the generator water storage chamber (8) and a check valve for preventing water in the generator water storage chamber (8) from flowing to the waste heat water storage chamber (7) are arranged on the water pipe (9); a steam outlet (10) connected to the generator water storage chamber (8) is arranged above the outer cylinder (2a).

4. A C-type vertical steam generator according to claim 3, characterized in that: The water inlet of the waste heat water storage chamber (7) is arranged above the shell (3a), the water outlet of the waste heat water storage chamber (7) is arranged below the shell (3a), and the water inlet of the generator water storage chamber (8) is arranged above the transverse pipe.

5. A C-type vertical steam generator according to claim 1, characterized in that: The inner fin smoke tube (2b) comprises an outer tube (2b1), wherein a petal-shaped fin (2b2) ​​and a positioning column (2b3) are arranged inside the outer tube (2b1), and the positioning column (2b3) is arranged at the center of the petal-shaped fin (2b2).

6. A C-type vertical steam generator according to claim 1, characterized in that: An umbrella-shaped steam-water separation device (11) is arranged inside the outer cylinder (2a) and is located above the inner fin smoke pipe (2b). The umbrella-shaped steam-water separation device (11) comprises a hollow truncated cone-shaped flow guide plate (11a) with an opening at the lower end and a plurality of rib plates (11b) arranged inside the truncated cone-shaped flow guide plate (11a). A steam outlet (12) is arranged at the upper end of the truncated cone-shaped flow guide plate (11a).

7. A C-type vertical steam generator according to claim 6, characterized in that: The rib plate (11b) is arranged vertically and fixed in the truncated cone-shaped guide plate (11a) by welding.

8. A C-type vertical steam generator according to claim 6, characterized in that: The minimum distance between the rib plate (11b) and the center of the truncated cone-shaped flow guide plate (11a) is smaller than the radius of the steam outlet (12).

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