Anti-condensation structure for bulb head of bulb tubular unit

Abstract

The utility model discloses an anti-condensation structure for a bulb head of a bulb tubular unit, which comprises a rotating wheel type dehumidifier and a condensation type dehumidifier which are fixed on the outer wall of the top end of a partition plate in the bulb head, and water outlets of the rotating wheel type dehumidifier and the condensation type dehumidifier are connected with a water storage tank through connecting pipes. An air outlet of the rotating wheel type dehumidifier is connected with two air conveying pipelines, and an axial flow fan communicated with the upper end and the lower end of the bulb head is arranged in the middle section of the partition plate. Through the arrangement of the rotating wheel type dehumidifier, the condensation type dehumidifier, the axial flow fan, the air conveying pipeline and the air supply nozzle, dry air blown out by the rotating wheel type dehumidifier forms dry air circulation in the bulb head through the air conveying pipeline and the axial flow fan, and an air curtain is formed at key parts such as the outgoing line assembly, so that equipment is protected and moisture condensation is prevented; the condensation type dehumidifier is used for removing moisture in the air, so that the air humidity is reduced to be below a low-temperature dew point, the formation condition of dew condensation is destroyed, and the possibility that dew condensation occurs in the bubble head is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tubular generator sets, in particular to a bulb tubular generator set bubble head anti-condensation structure. Background Art

[0002] The bulb flow-through unit is mainly composed of a generator, a turbine and other auxiliary equipment. The generator is located in the bubble head, and the turbine is located behind the socket of the bulb. The water flows through the turbine to drive the generator to generate electricity. In the design of hydropower stations using bubble head flow-through generator sets, there is a roof overflow plant design structure. The discharge building is arranged on the top of the plant. Its flood discharge facilities overlap with the main plant, resulting in poor ventilation of the main engine layer. There is a lot of moisture and severe condensation in the unit bubble head, which reduces the insulation of the unit stator, rotor and outgoing busbar. There is a safety risk that the unit will not stop due to short circuit and grounding of the unit's outgoing copper busbar. The corrosion of metal components such as the bubble head and shaft is also relatively serious. Therefore, relevant measures need to be taken to reduce the humidity of the bubble head. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a bulb tubular unit bubble head anti-condensation structure.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A bulb cross-flow unit bubble head anti-condensation structure, comprising a rotary dehumidifier and a condensing dehumidifier fixed to the outer wall of the top end of the internal partition of the bubble head, the water outlets of the rotary dehumidifier and the condensing dehumidifier are connected to a water storage tank through a connecting pipe, the air outlet of the rotary dehumidifier is connected to two air supply pipes, the air supply pipes are fixed to the inner wall of the bubble head, an axial flow fan connected to the upper and lower ends of the bubble head is arranged in the middle section of the partition, 5 sets of temperature and humidity sensors are arranged on the bubble head and the inner wall of the shaft, and the inner wall of the shaft is provided with a heat insulation wall panel structure.

[0006] As a further solution of the utility model: the other end of one of the air supply ducts is located at the top of the bubble head, and two axial flow fans connected in series are installed on the air supply duct; the other end of the other air supply duct is located at the lead-out wire assembly at the bottom of the bubble head, and an axial flow fan is installed on the air supply duct.

[0007] As a further solution of the utility model: a plurality of air supply nozzles are arranged on the air delivery duct, wherein two air supply nozzles are arranged at the lead-out line assembly, three air supply nozzles are arranged at the upper part of the bubble head, 2-3 air supply nozzles are arranged in the middle part of the bubble head, and 1-2 air supply nozzles are arranged at the lower part of the bubble head.

[0008] As a further solution of the utility model: 5 sets of the temperature and humidity sensors are respectively arranged at the top of the shaft, the middle of the shaft, the top, the middle and the bottom of the bubble head.

[0009] As a further solution of the utility model: a water level sensor is arranged on the inner wall of the water storage tank, a drainage pipe is fixed on one side of the water storage tank, and a drainage pump is arranged at the connection between the drainage pipe and the water storage tank.

[0010] As a further solution of the utility model: the heat-insulating wall panel structure is a steel plate connected to the inner wall of the shaft through angle steel, and the thickness of the steel plate is 5 mm.

[0011] As a further solution of the utility model: a 7 cm heat insulation layer and a 3 cm fireproof rock wool layer are arranged between the steel plate and the inner wall of the shaft, and the surface of the steel plate is painted with anti-condensation paint.

[0012] As a further solution of the utility model: a track-type closed door is arranged at the top of the shaft.

[0013] Compared with the prior art, the utility model provides a bulb tubular unit bubble head anti-condensation structure, which has the following beneficial effects:

[0014] 1. The utility model is provided with a rotary dehumidifier, a condensing dehumidifier, an axial flow fan, an air duct and an air supply nozzle. The rotary dehumidifier blows out dry air through the air duct and the axial flow fan to form a dry air circulation inside the bubble head, and forms a wind curtain at key positions such as the lead-out line assembly to protect the equipment from condensation. The condensing dehumidifier removes moisture from the air, reduces the air humidity to a low-temperature dew point, destroys the formation conditions of condensation, and effectively reduces the possibility of condensation inside the bubble head.

[0015] 2. The utility model, by providing a heat-insulating wall panel structure, effectively prevents direct heat exchange between humid hot air and the inner wall of the shaft, reduces condensation on the inner wall of the shaft, and reduces corrosion of the internal structure of the shaft.

[0016] 3. The utility model is provided with a track-type closed door to close the vertical shaft, so that a relatively closed space is formed in the bubble head, which reduces the entry of external humid air and is conducive to removing moisture from the humid air in the bubble head.

[0017] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a bulb tubular unit bubble head anti-condensation structure proposed by the utility model;

[0019] Figure 2It is a schematic plan view of a bulb tubular unit bubble head anti-condensation structure proposed by the utility model;

[0020] Figure 3 A schematic diagram of the internal structure of a water storage tank of a bulb tubular unit bubble head anti-condensation structure proposed by the utility model;

[0021] Figure 4 The utility model provides a cross-sectional view of the wall of a vertical shaft of a bulb tubular unit bubble head anti-condensation structure.

[0022] In the figure: 1. Bubble head; 2. Vertical shaft; 3. Partition; 4. Lead wire assembly; 5. Rotary dehumidifier; 6. Condensing dehumidifier; 7. Axial flow fan; 8. Air supply duct; 9. Temperature and humidity sensor; 10. Air supply nozzle; 11. Track-type closed door; 12. Water storage tank; 13. Connecting pipe; 14. Drain pipe; 15. Drain pump; 16. Water level sensor; 17. Angle steel; 18. Insulation layer; 19. Fireproof rock wool layer; 20. Steel plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Example 1

[0026] A bulb tubular unit bubble head anti-condensation structure, such as Figures 1 to 4As shown, it includes a rotary dehumidifier 5 and a condensing dehumidifier 6 fixed to the outer wall of the top end of the internal partition 3 of the bubble head 1, the water outlets of the rotary dehumidifier 5 and the condensing dehumidifier 6 are connected to the water storage tank 12 through a connecting pipe 13, the air outlet of the rotary dehumidifier 5 is connected to two air delivery pipes 8, the air delivery pipes 8 are fixed to the inner wall of the bubble head 1, one of the air delivery pipes 8 is located at the top of the bubble head 1 at the other end, and two axial flow fans 7 connected in series are installed on the air delivery pipe 8, the other end of the other air delivery pipe 8 is located at the lead-out wire assembly 4 at the bottom of the bubble head 1, and an axial flow fan 7 is installed on the air delivery pipe 8, and an axial flow fan 7 is connected to the upper and lower ends of the bubble head 1 in the middle section of the partition 3. A flow fan 7 is provided, and a plurality of air supply nozzles 10 are arranged on the air supply duct 8, wherein two air supply nozzles 10 are arranged at the lead-out wire assembly 4, three air supply nozzles 10 are arranged on the upper part of the bubble head 1, 2-3 air supply nozzles 10 are arranged in the middle part of the bubble head 1, and 1-2 air supply nozzles 10 are arranged at the lower part of the bubble head 1. Five sets of temperature and humidity sensors 9 are arranged on the bubble head 1 and the inner wall of the shaft 2, and the five sets of temperature and humidity sensors 9 are respectively arranged at the top of the shaft 2, the middle part of the shaft 2, the top, the middle and the bottom of the bubble head 1; the temperature and humidity sensors 9, the rotary dehumidifier 5, the condensing dehumidifier 6 and the axial flow fan 7 are all electrically connected to the external control device, and the inner wall of the shaft 2 is provided with a heat insulation wall panel structure.

[0027] A water level sensor 16 is disposed on the inner wall of the water tank 12 , a drainage pipe 14 is fixed to one side of the water tank 12 , and a drainage pump 15 is disposed at the connection between the drainage pipe 14 and the water tank 12 .

[0028] The heat-insulating wall panel structure is a steel plate 20 connected to the inner wall of the shaft 2 through an angle steel 17. The thickness of the steel plate 20 is 5 mm. A 7 cm insulation layer 18 and a 3 cm fireproof rock wool layer 19 are arranged between the steel plate 20 and the inner wall of the shaft 2. The surface of the steel plate 20 is painted with anti-condensation paint.

[0029] A plurality of sets of temperature and humidity sensors 9 detect the temperature and humidity at various places in the bubble head 1 and the shaft 2 in real time, and transmit the detection data to the external control device. The control device controls the condensing dehumidifier 6 to dehumidify and the rotary dehumidifier 5 to blow out dry air according to the detection value. The rotary dehumidifier 5 blows out dry air through the air duct 8 and the axial flow fan 7 to form a dry air circulation inside the bubble head 1, and forms a wind curtain at key positions such as the lead-out line assembly 4 to protect the equipment from condensation; the condensing dehumidifier 6 removes moisture from the air, reduces the air humidity to a low-temperature dew point, and destroys the conditions for the formation of condensation; the heat-insulating wall panels prevent direct heat exchange between the humid and hot air and the inner wall of the shaft 2 through the insulation layer 18 and the fire-proof rock wool layer 19, thereby avoiding condensation on the inner wall of the shaft 2; when the water level sensor 16 detects that the water level inside the water storage tank 12 is high, the drainage pump 15 starts to discharge the accumulated water inside the water storage tank 12 through the drainage pipe 14.

[0030] By arranging a rotary dehumidifier 5, a condensing dehumidifier 6, an axial flow fan 7, an air duct 8 and an air supply nozzle 10, the rotary dehumidifier 5 blows out dry air through the air duct 8 and the axial flow fan 7 to form a dry air circulation inside the bubble head 1, and forms a wind curtain at key positions such as the lead-out wire assembly 4 to protect the equipment from condensation; the condensing dehumidifier 6 removes moisture from the air, reduces the air humidity to a low temperature dew point, destroys the formation conditions of condensation, and effectively reduces the possibility of condensation water inside the bubble head 1.

[0031] By providing a heat-insulating wall panel structure, direct heat exchange between the humid hot air and the inner wall of the shaft is effectively prevented, and condensation on the inner wall of the shaft 2 is reduced to prevent corrosion of the internal structure of the shaft 2.

[0032] Example 2

[0033] A bulb tubular unit bubble head anti-condensation structure, this embodiment is based on the embodiment 1, and makes the following improvements: Figure 1 As shown, a track-type closed door 11 is arranged at the top of the shaft 2 .

[0034] The vertical shaft 2 is closed by the track-type closed door 11, so that a relatively closed space is formed in the bubble head 1, which reduces the entry of external humid air and is conducive to removing moisture from the humid air in the bubble head.

[0035] By providing a track-type closed door 11, the vertical shaft 2 is closed, so that a relatively closed space is formed in the bubble head 1, which reduces the entry of external humid air and is conducive to removing moisture from the humid air in the bubble head.

[0036] Working principle: Multiple sets of temperature and humidity sensors 9 detect the temperature and humidity at various places in the bubble head 1 and the shaft 2 in real time, and transmit the detection data to the external control device. The control device controls the condensing dehumidifier 6 to dehumidify and the rotary dehumidifier 5 to blow out dry air according to the detection value. The dry air blown out by the rotary dehumidifier 5 forms a dry air circulation inside the bubble head 1 through the air duct 8 and the axial flow fan 7, and forms an air curtain at key locations such as the lead-out wire assembly 4 to protect the equipment from condensation; the condensing dehumidifier 6 removes moisture from the air to reduce the air humidity. At low to low temperature dew point, the formation conditions of condensation are destroyed; the heat-insulating wall panels prevent direct heat exchange between humid hot air and the inner wall of the shaft 2 through the insulation layer 18 and the fire-proof rock wool layer 19, thereby avoiding condensation on the inner wall of the shaft 2; when the water level sensor 16 detects that the water level inside the water storage tank 12 is high, the drainage pump 15 is started to discharge the accumulated water inside the water storage tank 12 through the drainage pipe 14; and the shaft 2 is closed by the track-type closed door 11, so that a relatively closed space is formed in the bubble head 1, reducing the entry of external humid air, which is conducive to removing the moisture of the humid air in the bubble head.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bulb cross-flow unit bubble head anti-condensation structure, comprising a rotary dehumidifier (5) and a condensing dehumidifier (6) fixed to the top outer wall of the internal partition (3) of the bubble head (1), characterized in that: The water outlets of the rotary dehumidifier (5) and the condensing dehumidifier (6) are both connected to a water storage tank (12) via a connecting pipe (13); the air outlet of the rotary dehumidifier (5) is connected to two air supply pipes (8); the air supply pipes (8) are fixed to the inner wall of the bubble head (1); an axial flow fan (7) connected to the upper and lower ends of the bubble head (1) is arranged in the middle section of the partition (3); five sets of temperature and humidity sensors (9) are arranged on the bubble head (1) and the inner wall of the shaft (2); and a heat insulation wall panel structure is arranged on the inner wall of the shaft (2).

2. The anti-condensation structure of the bulb tubular unit according to claim 1, characterized in that: The other end of one of the air delivery pipes (8) is located at the top of the bubble head (1), and two axial flow fans (7) connected in series are installed on the air delivery pipe (8); the other end of the other air delivery pipe (8) is located at the lead-out line assembly (4) at the bottom of the bubble head (1), and one axial flow fan (7) is installed on the air delivery pipe (8).

3. The anti-condensation structure of the bulb tubular unit bubble head according to claim 2, characterized in that: The air delivery duct (8) is provided with a plurality of air supply nozzles (10), wherein two air supply nozzles (10) are provided at the lead-out line assembly (4), three air supply nozzles (10) are provided at the upper part of the bubble head (1), 2-3 air supply nozzles (10) are provided at the middle part of the bubble head (1), and 1-2 air supply nozzles (10) are provided at the lower part of the bubble head (1).

4. The anti-condensation structure of the bulb tubular unit bubble head according to claim 1, characterized in that: The five sets of temperature and humidity sensors (9) are respectively arranged at the top of the vertical shaft (2), the middle of the vertical shaft (2), and the top, middle and bottom of the bubble head (1).

5. The anti-condensation structure of the bulb tubular unit bubble head according to claim 1, characterized in that: A water level sensor (16) is provided on the inner wall of the water storage tank (12), a drainage pipe (14) is fixed to one side of the water storage tank (12), and a drainage pump (15) is provided at the connection between the drainage pipe (14) and the water storage tank (12).

6. The bulb tubular unit bubble head anti-condensation structure according to claim 1, characterized in that: The heat-insulating wall panel structure is a steel plate (20) connected to the inner wall of the shaft (2) via an angle steel (17), and the thickness of the steel plate (20) is 5 mm.

7. The anti-condensation structure of the bulb tubular unit bubble head according to claim 6, characterized in that: A 7 cm heat insulation layer (18) and a 3 cm fireproof rock wool layer (19) are provided between the steel plate (20) and the inner wall of the shaft (2), and the surface of the steel plate (20) is painted with anti-condensation paint.

8. The anti-condensation structure of the bulb tubular unit bubble head according to claim 1, characterized in that: A track-type closed door (11) is arranged at the top of the vertical shaft (2).

Images