Low heat loss type deaerator of power plant boiler

Abstract

The utility model provides a low heat loss type deaerator of a power station boiler, which relates to the field of power station boilers, and comprises a deaerator shell, the outer surface of the deaerator shell is wrapped with a plurality of thermal insulation materials, two turntables are rotatably connected in the deaerator shell, a coiled water spraying disc is fixedly connected between the two turntables, and the water spraying disc is fixedly connected with the two turntables. A plurality of water passing openings are formed in the water spraying disc, a water conveying pipe is rotationally connected into the deaerator shell, and the water conveying pipe is located in the center of the water spraying disc; according to the low-heat-loss type deaerator of the power plant boiler, the heat preservation material is arranged and used for wrapping the deaerator shell, heat loss is reduced, the coiled water spraying disc is adopted in the internal structure, and the water conveying pipe is located in the center of the water spraying disc and cooperates with rotating work, so that water can be conveyed to the periphery, and the steam-water contact area is increased; the heat consumption is reduced while the deoxidizing efficiency is improved, and the problems proposed in the background technology are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power plant boilers, in particular to a low heat loss type deaerator for power plant boilers. Background Art

[0002] Power plant boilers convert the heat energy generated by fuel combustion into steam, which drives the turbine, which in turn drives the generator. A deaerator in a power plant boiler is a device used to remove dissolved oxygen and other gases from water. During operation, the deaerator has a large surface area and is typically at a high temperature. The deaerator's outer shell and connecting piping dissipate heat to the surrounding environment, resulting in significant heat loss, which affects energy efficiency and increases operating costs. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the utility model provides a low-heat-loss deaerator for power plant boilers. The deaerator shell is wrapped with high-efficiency thermal insulation materials to reduce heat loss. The internal structure adopts a coiled water spray plate to increase the steam-water contact area, thereby improving the deoxygenation efficiency while reducing heat consumption.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a low heat loss deaerator for a power plant boiler, comprising a deaerator shell, the outer surface of the deaerator shell being wrapped with a plurality of thermal insulation materials, the interior of the deaerator shell being rotatably connected to two turntables, a coiled water spray plate being fixedly connected between the two turntables, a plurality of water outlets being provided inside the water spray plate, the interior of the deaerator shell being rotatably connected to a water pipe, the water pipe being located at the center of the water spray plate, a plurality of spray heads arranged at equal distances being fixedly installed on the outer surface of the water pipe, the water pipe passing through the two turntables and being rotatably connected to the two turntables, and a steam inlet pipe being fixedly installed on the outer surface of the deaerator shell.

[0005] Furthermore, the thermal insulation material is configured as rock wool material.

[0006] Furthermore, a sealing ring is provided at the intersection of the water pipe and the two turntables.

[0007] Furthermore, one end of the water pipe is sealed and connected to an external motor.

[0008] Furthermore, the side surfaces of the two turntables away from each other are fixedly connected to gear rings, and the side surfaces of the two turntables away from each other are rotatably connected to gear B through a rotating shaft. The two gears B are respectively meshed with the two gear rings, and the outer surfaces of the two gears B are meshed with gears A, and the two gears A are fixedly connected to the water pipe.

[0009] Furthermore, an exhaust pipe is fixedly mounted on the outer surface of the deaerator shell, and a pressure relief valve is mounted on one end of the exhaust pipe.

[0010] Furthermore, a drain pipe is fixedly installed on the outer surface of the deaerator shell, and a valve is installed at one end of the drain pipe.

[0011] The beneficial effects of the present invention are:

[0012] 1. The low-heat-loss deaerator of the power plant boiler uses insulation material to wrap the deaerator shell to reduce heat loss. The internal structure adopts a coiled water spray plate. The water pipe is located in the center of the water spray plate. Cooperating with the rotation, it can transport water to the surrounding areas, increase the steam-water contact area, improve the deoxygenation efficiency and reduce heat consumption, thus solving the problems raised in the background technology.

[0013] 2. The low heat loss deaerator of the power plant boiler, through the set gear A, gear B and gear ring, can link the water pipe with the water spray plate during rotation, so that steam and water are fully in contact, improving the deoxygenation rate. In addition, the water pipe rotates faster than the water spray plate, and the rotation of multiple spray heads makes the water evenly diffused, improving the deoxygenation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the deaerator shell of the utility model;

[0015] Figure 2 It is a cross-sectional view of the front view of the deaerator shell of the present invention;

[0016] Figure 3 It is a sectional view of the side view of the deaerator shell of the present utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the water spray tray of the utility model;

[0018] Figure 5 This is a schematic diagram of the water pipe structure of the utility model.

[0019] Among them: 1. Deaerator shell; 2. Insulation material; 3. Turntable; 4. Sprinkler tray; 5. Water inlet; 6. Water pipe; 7. Spray head; 8. Steam inlet pipe; 9. Sealing ring; 10. Gear ring; 11. Gear B; 12. Gear A; 13. Exhaust pipe; 14. Drain pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See Figure 1-Figure 5A low heat loss deaerator for a power plant boiler includes a deaerator shell 1. The outer surface of the deaerator shell 1 is wrapped with a plurality of thermal insulation materials 2. The thermal insulation material 2 is set as rock wool material. The fiber structure of rock wool can effectively prevent the transfer of heat, play a role in heat preservation, and can withstand high temperatures. It has good fire retardant effect. An exhaust pipe 13 is fixedly installed on the outer surface of the deaerator shell 1. A pressure relief valve is installed at one end of the exhaust pipe 13. When the air pressure exceeds a predetermined value, it is used to discharge the gas. A drain pipe 14 is fixedly installed on the outer surface of the deaerator shell 1. A valve is installed at one end of the drain pipe 14. By opening the valve, the deaerator water is discharged. The deaerator shell 1 is internally rotatably connected to two turntables 3, and a seal is set between the two turntables 3 and the deaerator shell 1. A coiled water spray plate 4 is fixedly connected between the two turntables 3. A plurality of water outlets 5 are provided inside the water spray plate 4. The deaerator shell 1 is internally rotatably connected to a water pipe 6, which is located at the center of the water spray plate 4. A sealing ring 9 is provided at the intersection of the water pipe 6 and the two turntables 3 to improve the sealing between the two turntables 3 and prevent water and steam from being discharged from the gap. One end of the water pipe 6 is sealed and connected to an external motor. The water pipe 6 is driven to rotate by the motor, which is conducive to improving the efficiency of multiple spray heads. 7, the side of the two turntables 3 away from each other is fixedly connected to the gear ring 10, and the side of the two turntables 3 away from each other is rotatably connected to the gear B11 through the rotating shaft. The two gears B11 are respectively engaged with the two gear rings 10, and the outer surfaces of the two gears B11 are engaged with gears A12. The two gears A12 are fixedly connected to the water pipe 6. When the water pipe 6 rotates, it can drive the two gears A12 to rotate, and then drive the two turntables 3 to rotate through the two gears B11 and the two gear rings 10, so that the water plate 4 can rotate, which is beneficial for the water inside the water plate 4 to be evenly and fully mixed with the steam. Contact, the outer surface of the water pipe 6 is fixedly installed with a plurality of spray heads 7 arranged at equal distances, and the water in the water pipe 6 is sprayed with water mist to the water spray plate 4 through multiple spray heads 7. The water pipe 6 passes through the two turntables 3 and is rotatably connected to the two turntables 3. The outer surface of the deaerator shell 1 is fixedly installed with a steam inlet pipe 8, and the steam enters the deaerator shell 1 through the steam inlet pipe 8. The higher the water temperature, the lower the solubility of the gas in the water. The steam is evenly mixed with the water droplets sprayed by the spray head 7, heating the water droplets and increasing the air pressure in the deaerator shell 1. When the air pressure reaches the preset target, the gas separated from the water will be discharged through the exhaust pipe 13.

[0022] Working principle:

[0023] First, it is necessary to transport the steam with heat to the steam inlet pipe 8, and then transport the steam to the inside of the deaerator shell 1 through the steam inlet pipe 8 to increase the temperature inside the deaerator shell 1. Then, the water that needs to be deoxygenated is transported to the water pipe 6. The water inside the water pipe 6 is sprayed from multiple spray heads 7. Then, the water pipe 6 is driven by the motor to rotate, and the water pipe drives the multiple spray heads 7 to rotate, which in turn drives the two gears A12 to rotate. The two gears A12 respectively drive the two gears B11 to rotate, and the two gears B11 respectively drive the two gear rings 10 to rotate. The two gear rings 10 respectively drive the two turntables 3 to rotate, and the two turntables 3 drive the water spray plate 4 to rotate. At this time, the water spray plate 4 and the multiple spray plates are connected. The mist head 7 starts to rotate, and the spray head 7 sprays water on the middle of the water spray plate 4. Since the water supply pipe 6 is located in the center of the water spray plate 4, and a plurality of water outlets 5 are opened inside the water spray plate 4, the sprayed water diffuses from the inside to the outside along the water spray plate 4 through the water outlets 5, thereby increasing the contact area between steam and water, improving the deoxygenation efficiency and reducing heat consumption, thereby solving the problem raised in the background technology. The higher the water temperature in the deaerator shell 1, the lower the solubility of the gas in the water, and the steam and the water droplets sprayed by the spray head 7 are evenly mixed, heating the water droplets and increasing the air pressure in the deaerator shell 1. When the air pressure reaches the preset target, the gas separated from the water will be discharged through the exhaust pipe 13.

[0024] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0025] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low heat loss deaerator for a power plant boiler, comprising a deaerator housing (1), characterized in that: The outer surface of the deaerator shell (1) is wrapped with a plurality of heat-insulating materials (2); the interior of the deaerator shell (1) is rotatably connected to two turntables (3); a coiled water spraying plate (4) is fixedly connected between the two turntables (3); a plurality of water outlets (5) are provided inside the water spraying plate (4); the interior of the deaerator shell (1) is rotatably connected to a water pipe (6); the water pipe (6) is located at the center of the water spraying plate (4); a plurality of spray heads (7) arranged at equal distances are fixedly installed on the outer surface of the water pipe (6); the water pipe (6) passes through the two turntables (3) and is rotatably connected to the two turntables (3); a steam inlet pipe (8) is fixedly installed on the outer surface of the deaerator shell (1).

2. The low heat loss deaerator for a power plant boiler according to claim 1, characterized in that: The thermal insulation material (2) is configured as rock wool material.

3. The low heat loss deaerator for a power plant boiler according to claim 1, characterized in that: A sealing ring (9) is provided at the intersection of the water delivery pipe (6) and the two rotating disks (3).

4. The low heat loss deaerator for a power plant boiler according to claim 1, characterized in that: One end of the water delivery pipe (6) is sealed and connected to an external motor.

5. The low heat loss deaerator for a power plant boiler according to claim 1, characterized in that: The side surfaces of the two rotating disks (3) that are away from each other are fixedly connected to a gear ring (10), and the side surfaces of the two rotating disks (3) that are away from each other are rotatably connected to a gear B (11) via a rotating shaft. The two gears B (11) are respectively meshed with the two gear rings (10), and the outer surfaces of the two gears B (11) are meshed with a gear A (12), and the two gears A (12) are fixedly connected to the water pipe (6).

6. The low heat loss deaerator for a power plant boiler according to claim 1, characterized in that: An exhaust pipe (13) is fixedly mounted on the outer surface of the deaerator housing (1), and a pressure relief valve is mounted at one end of the exhaust pipe (13).

7. The low heat loss deaerator for a power plant boiler according to claim 1, characterized in that: A drain pipe (14) is fixedly mounted on the outer surface of the deaerator shell (1), and a valve is mounted on one end of the drain pipe (14).

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