Multi-layer tower type steam generator

Abstract

The invention relates to a multi-layer tower type steam generator which is integrally designed in a mode that multiple layers of annular shells are mutually stacked, annular air flow channels are formed in the centers in the shells, the air flow channels corresponding to all the layers of shells are communicated with one another, in addition, a water supplementing tank is arranged at the top of each shell, and the water supplementing tanks are communicated with the annular air flow channels. The water replenishing tank replenishes water into gaps between the air flow channels in all the layers of shells and the shells, the fuel combustion part is arranged at the bottoms of the shells, heat enters the air flow channels from the centers of the shells to flow, water in all the layers of shells is heated to generate steam, segmented heating treatment is achieved, and the heating efficiency is improved. On one hand, maximum utilization of heat generated by fuel combustion is guaranteed, on the other hand, the water quantity needing to be heated by different heat areas is greatly reduced compared with the total water quantity through the sectional heating mode, and steam can be generated at the fastest speed during heating, and the needed steam quantity is kept.

Description

Technical Field

[0001] The invention relates to the technical field of steam generating equipment, in particular to a multi-layer tower steam generator. Background Art

[0002] A steam generator, 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. Steam generators are widely used in garment factories, dry cleaners, restaurants, steamed bun shops, canteens, bean product factories and other places.

[0003] Steam generators have different specifications. The Regulations on Safety Supervision of Special Equipment have set limits on boilers, classifying boilers with a volume greater than or equal to 30 liters into the category of special equipment, and placing relatively strict limits on their production and use. Small liner boilers with a volume less than 30 liters do not belong to special equipment and are not under the management of the technical supervision department, which saves installation and use costs to a certain extent.

[0004] In some small restaurants, steamed bun shops, dry cleaners and other application places, small equipment below 30 liters has more advantages than boilers above 30 liters. From installation, use to later maintenance, including restrictive conditions on the site and other comprehensive comparisons, boilers below 30 liters are the best choice. However, there are some shortcomings in actual use, such as the reduction in capacity leading to a reduction in steam volume, and the miniaturization of equipment will also have certain shortcomings in the heat utilization of fuel, and it is impossible to achieve the optimal combustion heat utilization, resulting in fuel and heat loss. These problems are the most practical and difficult to optimize difficulties faced by current miniaturized boilers. Summary of the invention

[0005] The present invention is a multi-layer tower steam generator, which is designed in an overall manner of stacking multiple layers of annular shells. An annular air flow channel is provided at the center of the shell, and the air flow channels corresponding to each layer of the shell are interconnected. In addition, a water replenishment tank is provided on the top of the shell, and the water replenishment tank replenishes water to the air flow channels in each layer of the shell and the gaps between the shells respectively. The fuel combustion part is arranged at the bottom of the shell, and heat enters the air flow channel from the center of the shell to flow, and heats the water in each layer of the shell to generate steam, thereby realizing segmented heating treatment. On the one hand, it ensures the maximum utilization of the heat generated by the fuel combustion, and on the other hand, the segmented heating form greatly reduces the amount of water required to be heated in different heat areas compared to the total amount of water, so that steam can be generated at the fastest speed and the required amount of steam can be maintained during heating.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A multi-layer tower steam generator comprises a plurality of shells stacked on each other, an air flow channel is arranged at the center of the shell, the air flow channels in each layer of the shell are interconnected and present a one-way through structure; a combustion part is arranged at the bottom of the shell, the combustion part is connected with the air flow channel; a water replenishment tank is also arranged on the top of the multi-layer stacked shell, a water replenishment pipe for replenishing water is arranged between the water replenishment tank and each layer of the shell, a steam pipe is also arranged between the shell and the water replenishment tank, and a steam outlet is arranged on the top of the water replenishment tank.

[0007] Furthermore, the shell is an annular structure, and the corresponding air flow channel is also an annular structure; the air flow channel is arranged at the center of the shell, and a baffle is provided on the air flow channel, and upper and lower flow channel openings are respectively provided above and below both sides of the baffle. In the stacked shells, the upper and lower flow channel openings correspond to each other and form a through shape; in the stacked shells, the upper flow channel opening corresponding to the top shell is arranged on the inner wall of the shell, and the lower flow channel opening corresponding to the bottom shell is arranged on the outer wall of the shell.

[0008] Furthermore, a downflow outlet arranged on the outer wall of the shell at the bottom is externally connected to a vertically arranged air outlet pipe, an annular preheating water tank is arranged on the outer wall of the air outlet pipe, and the preheating water tank is provided with a water inlet and a water outlet respectively, and the water outlet is connected to the water replenishing tank through a pipe.

[0009] Furthermore, each layer of the shell is interconnected by a welded connecting piece on the outer edge, and each layer of the shell is sealed by a sealing ring, which includes an annular sealing ring and a flow channel sealing ring. Two annular sealing rings are arranged between adjacent shells, corresponding to the outer edge and inner edge of the shell respectively, and the flow channel sealing ring corresponds to the adjacent lower flow channel and upper flow channel; the sealing ring is formed by surrounding a refractory rope coated with refractory mud.

[0010] The water supply pipes are provided with a number corresponding to the number of shell layers, the upper ends of the water supply pipes correspond to the side bottoms of the water supply tanks, and the lower ends of the water supply pipes correspond to the side bottoms of each layer of the shell; the steam pipes are provided with a number corresponding to the number of shell layers, the upper ends of the steam pipes correspond to the middle and upper parts of the water supply tanks and are located on the same horizontal plane, and the lower ends of the steam pipes correspond to the side tops of each layer of the shell.

[0011] Furthermore, the water supply pipe and steam pipe both adopt a two-section structure, corresponding to the water supply tank and the shell respectively, and the two-section structures of the water supply pipe and the steam pipe are connected by a connecting flange; the corresponding water supply pipe and steam pipe on the shell have the same length and are shorter.

[0012] Furthermore, the water replenishment tank is also an annular structure, and the water replenishment tank corresponds to the shell, the center of the water replenishment tank and the center of the shell are concentric, and the water replenishment tank and the topmost shell are connected by a connecting piece arranged on the outer edge and fixed by welding; a movably installed end cover is provided at the top of the center of the water replenishment tank; and a liquid level observation window is also provided on the outside of the water replenishment tank.

[0013] An open furnace is provided at the center of the combustion section, a feeding port and an ash cleaning port are provided in front of the combustion section, and a spiral feeding device and a fan are provided on the side of the section, which are respectively connected to the furnace from the side; the top and bottom shells of the combustion section are sealed by an annular sealing ring.

[0014] The present invention adopts the above technical solution to achieve the following beneficial effects: The device uses a multi-layer shell and a corresponding air flow channel design structure, which, on the one hand, increases the length of the air flow channel, so that the contact area between hot air and water is larger, thereby increasing the utilization rate of heat; on the other hand, the multi-layer structure forms a plurality of separate water storage cavities between each layer of the shell and the air flow channel. The water capacity of each layer of the water storage cavity is relatively dispersed, and the capacity of drinking water in each layer of the shell is reduced, thereby achieving a faster steam output effect. At the same time, the structure can also greatly reduce the total water storage capacity of the equipment, so that the total water capacity can be less than 30 liters while ensuring the steam volume.

[0015] Each layer of the shell is connected and fixed by connecting plates and sealed by refractory ropes coated with refractory cement. The purpose of this design is that when a section of the shell fails, the corresponding section can be quickly disassembled, repaired or replaced. Only part of it needs to be replaced or repaired, without disassembling the entire section. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the shell disassembly.

[0018] Figure 3 Schematic diagram of the middle shell.

[0019] Figure 4 A schematic diagram of the top shell.

[0020] Figure 5 A schematic diagram of the bottom shell.

[0021] Figure 6 This is a schematic diagram of the combustion unit. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and examples. It should be clear that the following examples are only one or more manifestations of the present invention and are not a complete limitation of the invention described in this application. Any improvements known to those skilled in the art made on the basis of the invention or technical solutions described in this application should fall within the scope of protection claimed in this application. Example

[0023] like Figure 1-Figure 6 A multi-layer tower steam generator is shown, which includes multiple layers of shells 1 stacked on each other, an air flow channel 2 is provided at the center of the shell 1, and the air flow channels 2 in each layer of the shell 1 are interconnected and present a single-line through-type structure; a combustion part 3 is arranged at the bottom of the shell 1, and the combustion part 3 is connected to the air flow channel 2; a water replenishment tank 4 is also provided on the top of the multiple layers of the stacked shells 1, and a water replenishment pipe 5 for replenishing water is provided between the water replenishment tank 4 and each layer of the shell 1, a steam pipe 6 is also provided between the shell 1 and the water replenishment tank 4, and a steam outlet 401 is provided on the top of the water replenishment tank 4.

[0024] Furthermore, the shell 1 is an annular structure, and the corresponding air flow channel 2 is also an annular structure; the air flow channel 2 is arranged at the center of the shell 1, and a baffle 201 is provided on the air flow channel 2, and an upper flow channel opening 202 and a lower flow channel opening 203 are respectively provided above and below both sides of the baffle 201. In the stacked shells 1, the upper flow channel opening 202 and the lower flow channel opening 203 correspond to each other and form a connection; in the stacked shells 1, the upper flow channel opening 202 corresponding to the top shell 1 is arranged on the inner wall of the shell 1, and the lower flow channel opening 203 corresponding to the bottom shell 1 is arranged on the outer wall of the shell 1.

[0025] Furthermore, a downflow outlet 203 arranged on the outer wall of the shell 1 at the bottom is externally connected to a vertically arranged air outlet pipe 204, and an annular preheating water tank 205 is arranged on the outer wall of the air outlet pipe 204. The preheating water tank 205 is provided with a water inlet 2051 and a water outlet 2052, and the water outlet 2052 is connected to the water replenishment tank 4 through a pipe.

[0026] Furthermore, each layer of the shell 1 is interconnected by a welded connecting piece 101 on the outer edge, and each layer of the shell 1 is sealed by a sealing ring, which includes an annular sealing ring 1021 and a flow channel sealing ring 1022. Two annular sealing rings 1021 are provided between adjacent shells 1, corresponding to the outer edge and the inner edge of the shell 1 respectively, and the flow channel sealing ring 1022 corresponds to the adjacent lower flow channel opening 203 and the upper flow channel opening 202; the annular sealing ring 1021 and the flow channel sealing ring 1022 are both surrounded by a refractory rope coated with refractory mud.

[0027] The water supply pipes 5 are provided with a number corresponding to the number of layers of the shell 1, the upper ends of the water supply pipes 5 correspond to the side bottoms of the water supply tank 4, and the lower ends of the water supply pipes 5 correspond to the side bottoms of each layer of the shell 1; the steam pipes 6 are provided with a number corresponding to the number of layers of the shell 1, the upper ends of the steam pipes 6 correspond to the middle and upper parts of the water supply tank 4 and are located on the same horizontal plane, and the lower ends of the steam pipes 6 correspond to the side tops of each layer of the shell 1.

[0028] Furthermore, the water supply pipe 5 and the steam pipe 6 both adopt a two-section structure, corresponding to the water supply tank 4 and the shell 1 respectively, and the two-section structures of the water supply pipe 5 and the steam pipe 6 are connected by a connecting flange 7; the corresponding water supply pipe 5 and steam pipe 6 on the shell 1 have the same length and are shorter.

[0029] Furthermore, the water replenishment tank 4 is also an annular structure, and the water replenishment tank 4 corresponds to the shell 1, the center of the water replenishment tank 4 is concentric with the center of the shell 1, and the water replenishment tank 4 is connected to the topmost shell 1 by a connecting piece 101 fixed by welding on the outer edge; a movably installed end cover 403 is provided at the top of the center of the water replenishment tank 4; and a liquid level observation window 402 is also provided on the outside of the water replenishment tank 4.

[0030] An open furnace 301 is provided at the center of the combustion section 3, a feeding port 302 and a cleaning port 303 are provided in front of the combustion section 3, a spiral feeding device 304 and a fan 305 are provided on the side of the combustion section 3, and the spiral feeding device 303 and the fan 305 are respectively connected to the furnace 301 from the side; the top and bottom shells 1 of the combustion section 3 are sealed by an annular sealing ring 1021.

[0031] The present invention is mainly used in application sites of small boilers with a capacity of less than 30 liters, and increases the air flow channel, so that the contact area between water and the air flow channel is larger, thereby increasing the heat utilization rate.

[0032] The bottom of the water supply tank is connected to the bottom of each layer of the shell through a water supply pipe, and the steam pipe is connected from the top of each layer of the shell to the upper half of the water supply tank, thereby achieving a good circulation effect as a whole. The relatively narrow space formed between the air flow channel and the shell can generate steam more quickly during operation, and can also better guarantee the steam volume during the trial process.

[0033] In addition, the multi-layer shells are connected by stacking and welding connecting plates. The advantage in actual use is that when a part fails, it can be quickly cut and removed. At the same time, the number of shell layers can be selected according to the actual working conditions and furnace fuel. The number of shells can be flexibly selected and installed.

[0034] The preheating water tank part corresponds to the air outlet pipe to which the air flow channel is finally connected, and uses the residual temperature in the air outlet pipe to preheat the water that is about to enter the water supply tank.

Claims

1. A multi-layer tower steam generator, characterized in that: It includes multiple layers of shells stacked on each other, with an air flow channel arranged at the center of the shell, and the air flow channels in each layer of the shell are interconnected and present a one-way through structure; a combustion part is arranged at the bottom of the shell, and the combustion part is connected to the air flow channel; a water replenishment tank is also arranged on the top of the multiple layers of the stacked shells, and water replenishment pipes for replenishing water are arranged between the water replenishment tank and each layer of the shell, and a steam pipe is also arranged between the shell and the water replenishment tank, and a steam outlet is arranged on the top of the water replenishment tank.

2. A multi-layer tower steam generator according to claim 1, characterized in that: The shell is an annular structure, and the corresponding air flow channel is also an annular structure; the air flow channel is arranged at the center of the shell, and a baffle is arranged on the air flow channel, and an upper flow channel opening and a lower flow channel opening are respectively arranged above and below both sides of the baffle, and in the stacked shells, the upper flow channel opening and the lower flow channel opening correspond to each other and form a through shape; In the stacked shells, the upper flow channel opening corresponding to the top shell is arranged on the inner wall of the shell, and the lower flow channel opening corresponding to the bottom shell is arranged on the outer wall of the shell.

3. A multi-layer tower steam generator according to claim 2, characterized in that: The downflow outlet arranged on the outer wall of the shell at the bottom is externally connected to a vertically arranged air outlet pipe, an annular preheating water tank is arranged on the outer wall of the air outlet pipe, the preheating water tank is provided with a water inlet and a water outlet respectively, and the water outlet is connected to the water replenishing tank through a pipe.

4. A multi-layer tower steam generator according to claim 3, characterized in that: Each layer of the shell is connected to each other by a welded connecting piece on the outer edge, and each layer of the shell is sealed by a sealing ring. The sealing ring includes an annular sealing ring and a flow channel sealing ring. Two annular sealing rings are arranged between adjacent shells, corresponding to the outer edge and the inner edge of the shell respectively, and the flow channel sealing ring corresponds to the adjacent lower flow channel and upper flow channel; the sealing ring is formed by surrounding a refractory rope coated with refractory mud.

5. A multi-layer tower steam generator according to claim 4, characterized in that: The water supply pipes are provided with a number corresponding to the number of shell layers, the upper ends of the water supply pipes correspond to the side bottoms of the water supply tanks, and the lower ends of the water supply pipes correspond to the side bottoms of each layer of the shell; the steam pipes are provided with a number corresponding to the number of shell layers, the upper ends of the steam pipes correspond to the middle and upper parts of the water supply tanks and are located on the same horizontal plane, and the lower ends of the steam pipes correspond to the side tops of each layer of the shell.

6. A multi-layer tower steam generator according to claim 5, characterized in that: The water supply pipe and steam pipe both adopt a two-section structure, corresponding to the water supply tank and the shell respectively. The two-section structures of the water supply pipe and the steam pipe are connected by a connecting flange; the corresponding water supply pipe and steam pipe on the shell have the same length and are shorter.

7. A multi-layer tower steam generator according to claim 6, characterized in that: The water replenishment tank is also an annular structure, and the water replenishment tank corresponds to the shell, the center of the water replenishment tank and the center of the shell are concentric, the water replenishment tank and the top shell are connected by a connecting piece fixed by welding on the outer edge; a movably installed end cover is provided at the top of the center of the water replenishment tank; a liquid level observation window is also provided on the outside of the water replenishment tank.

8. A multi-layer tower steam generator according to claim 7, characterized in that: An open furnace is provided at the center of the combustion section, a feeding port and an ash cleaning port are provided in front of the combustion section, and a spiral feeding device and a fan are provided on the side of the section, which are respectively connected to the furnace from the side; the top and bottom shells of the combustion section are sealed by an annular sealing ring.

Images