A ducted fan for a tower

Abstract

The utility model discloses a kind of pipeline fan for tower, belong to pipeline fan technical field, including water jacket, insulating seal and binding post, the upper portion of water jacket is set to one end insulating seal, second sealing ring is set between water jacket and insulating seal, the upper portion of insulating seal is set binding post;The lower end of water jacket is set fan shell, first sealing ring is set between fan shell and water jacket;The middle position of water jacket upper portion is set to air supply opening;There is interlayer in water jacket interior, spiral air slot is arranged in interlayer as cooling water circulation flow channel. Can reduce the temperature of internal main motor, nitrogen gas is also used to reduce temperature by air supply opening simultaneously, can be long time running under closed environment;And realized running under closed environment, need not use mechanical seal, effectively reduce production cost.

Description

Technical Field

[0001] This utility model belongs to the field of duct fan technology, specifically relating to a duct fan for vertical towers. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] In the production of high-voltage power cables, the heating section of the vulcanizing tube in the production equipment is filled with nitrogen gas, which undergoes a cross-linking reaction under high temperature and high pressure (approximately 180℃ and 1.2MPa). To maintain pressure and cool the wire core, room temperature water is generally filled into the cooling section. Both the nitrogen gas and water inside are circulated to maintain a dynamic balance, with the nitrogen gas circulating through a pipe fan.

[0004] Currently, duct fans use mechanical seals to prevent high-pressure nitrogen leakage from the vulcanized pipes. However, these mechanical seals are prone to failure under prolonged high pressure and high-speed rotation, with each failure leading to quality issues and increased start-up and shutdown costs. Due to material and manufacturing limitations, mechanical seals cannot be replaced, and the current mechanical seal structure is costly, further increasing production costs. Utility Model Content To address the aforementioned issues, this utility model provides a duct fan for vertical towers, which can reduce the temperature of the internal main motor and also utilize nitrogen from the air inlet for cooling, enabling long-term operation in a sealed environment; moreover, it achieves operation in a sealed environment without the need for mechanical seals, effectively reducing production costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A duct fan for vertical towers includes a water jacket, an insulating seal, and a terminal block. The insulating seal is provided at one end of the upper part of the water jacket, and a second sealing ring is provided between the water jacket and the insulating seal. A terminal block is provided on the upper part of the insulating seal. A fan housing is provided at the lower end of the water jacket, and a first sealing ring is provided between the fan housing and the water jacket. An air inlet is provided at the middle position of the upper part of the water jacket. The water jacket has an internal interlayer with spiral grooves in the interlayer as a cooling water circulation channel.

[0006] As a further technical solution, the insulating seal and the water jacket are connected by bolts, and the insulating seal and the water jacket are sealed by a second sealing ring.

[0007] As a further technical solution, the fan housing is provided with a bolt hole group, which includes an inner bolt hole and an outer bolt hole. The outer bolt hole is used to connect the water jacket and the fan housing.

[0008] As a further technical solution, the inner bolt holes are used to connect the fan housing and the output shaft positioning sleeve, and the output shaft positioning sleeve is set inside the water jacket.

[0009] As a further technical solution, a pressure gauge interface is provided at the other end of the upper part of the water jacket, and both the first sealing ring and the second sealing ring are O-rings.

[0010] As a further technical solution, a main motor is provided in the upper part of the water jacket, and a main motor base is provided at the lower end of the main motor, with the main motor mounted on the main motor base.

[0011] As a further technical solution, the output end of the main motor is connected to one end of the coupling, and the other end of the coupling is connected to the output shaft.

[0012] As a further technical solution, an output shaft positioning sleeve is provided at the lower end of the main motor base, and the output shaft is installed inside the output shaft positioning sleeve.

[0013] As a further technical solution, a bearing positioning sleeve is fitted onto one end of the output shaft, and a fan impeller is mounted on the bearing positioning sleeve. The fan impeller is located inside the fan housing.

[0014] As a further technical solution, the main motor, coupling, and output shaft are all located inside the water jacket.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are: This invention uses a water jacket to reduce the temperature of the internal main motor, and also uses a gas inlet to introduce nitrogen for cooling, allowing the fan to run for a long time in a closed environment. The water jacket can not only be used to cool the motor, but also to replenish nitrogen for the entire production system. The fan can operate in a closed environment without the need for a mechanical seal, thus solving the problems of high maintenance costs and long maintenance times.

[0016] This utility model features a water jacket with an internal interlayer containing spiral grooves that serve as cooling water circulation channels. The cooling water is used to cool the operating motor. The air supply pipe replenishes compressed gas to the system when the pressure displayed on the remote pressure gauge falls below a set pressure. This not only lowers the ambient operating temperature but also prevents cross-linking byproducts from corroding motor components. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0018] Figure 1 This is a structural diagram of the duct fan for vertical towers according to this utility model; Figure 2 This is a cross-sectional view of the main motor base of this utility model; Figure 3 This is a cross-sectional view of the water jacket and insulating seal of this utility model; Figure 4 yes Figure 3 Enlarged view of Part I; Figure 5 yes Figure 3 Enlarged view of Part II; In the diagram: 1. Terminal block; 2. Insulating seal; 3. Water jacket; 4. Main motor; 5. Coupling; 6. Main motor base; 7. Output shaft; 8. Output shaft positioning sleeve; 9. Bearing positioning sleeve; 10. First sealing ring; 11. Fan impeller; 12. Fan housing; 13. Second sealing ring; 14. Pressure gauge interface; 15. Air inlet; 16. Inner bolt hole; 17. Outer bolt hole; 18. Air inlet; 19. Air outlet; 20. Water inlet; 21. Water outlet. Detailed Implementation

[0019] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0020] Currently, duct fans use mechanical seals to prevent high-pressure nitrogen leakage from the vulcanized pipes. However, these mechanical seals are prone to failure under prolonged high pressure and high-speed rotation, with each failure leading to quality issues and increased start-up and shutdown costs. Due to material and manufacturing limitations, mechanical seals cannot be replaced, and the current mechanical seal structure is costly, further increasing production costs.

[0021] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a duct fan for vertical towers, such as... Figure 1 As shown, it includes a water jacket 3, an insulating seal 2, and a terminal block 1. The insulating seal 2 is provided at one end of the upper part of the water jacket 3, and a second sealing ring 13 is provided between the water jacket 3 and the insulating seal 2. The terminal block 1 is provided above the insulating seal 2. The fan housing 12 is provided at the lower end of the water jacket 3, and a first sealing ring 10 is provided between the fan housing 12 and the water jacket 3. An air inlet 15 is provided at the middle position of the upper part of the water jacket 3. There is a sandwich layer inside the water jacket 3, and a spiral groove is provided in the sandwich layer as a cooling water circulation channel.

[0022] Specifically, the water jacket 3 is used to reduce the temperature of the internal main motor 4, and nitrogen is introduced through the air inlet 15 for cooling, allowing the fan to run for a long time in a closed environment. The water jacket 3 can not only be used for motor cooling, but also for nitrogen replenishment of the entire production system. The fan can operate in a closed environment without the need for mechanical seals, thus solving the problems of high maintenance costs and long maintenance time.

[0023] The water jacket 3 has an internal jacket with spiral grooves serving as cooling water circulation channels. The cooling water is used to cool the operating motor. The air supply pipe replenishes compressed gas to the system when the pressure displayed on the remote pressure gauge falls below the set pressure. This not only lowers the ambient temperature but also prevents cross-linking byproducts from corroding motor and other components.

[0024] The insulating seal 2 and the water jacket 3 are connected by bolts, and the insulating seal 2 and the water jacket 3 are sealed by a second sealing ring 13. Both the first sealing ring 10 and the second sealing ring 13 are O-rings.

[0025] Specifically, the second sealing ring 13 ensures the sealing between the water jacket 3 and the insulating seal 2, and the first sealing ring 10 ensures the sealing between the fan housing 12 and the water jacket 3; wherein, bolt holes are provided between the sealing water jacket 3 and the insulating seal 2, and the water jacket 3 and the insulating seal 2 are connected by bolts.

[0026] O-rings have a simple structure, regular cross-sectional shape, simple manufacturing process, and low cost. They provide reliable sealing, can achieve sealing under static or dynamic conditions, and can adapt to certain pressure, temperature, and media environments. Moreover, their sealing performance increases with increasing pressure.

[0027] The fan housing 12 is provided with a bolt hole group, which includes an inner bolt hole 16 and an outer bolt hole 17. The outer bolt hole 17 is used to connect the water jacket 3 and the fan housing 12. The inner bolt hole 16 is used to connect the fan housing 12 and the output shaft positioning sleeve 8, which is located inside the water jacket 3.

[0028] Specifically, the inner bolt hole 16 is used to fix the output shaft positioning sleeve 8, and the outer thread is used to fix the water jacket 3; an O-ring is provided between the outer thread of the fan housing 12 and the inner hole of the water jacket 3 for sealing and preventing gas from escaping. The use of two layers of bolt holes improves applicability, reduces the number of parts, and effectively controls costs.

[0029] A pressure gauge interface 14 is provided at the other end of the upper part of the water jacket 3.

[0030] Specifically, a pressure gauge is installed on the pressure gauge interface 14. The pressure gauge is used to detect the pressure inside the water jacket 3 and feeds the detected pressure back to the controller. The controller can be a PLC controller. The controller receives the pressure signal and controls the switch on the air supply pipe according to the pressure. That is, the air supply pipe replenishes compressed nitrogen to the system when the pressure displayed by the remote pressure gauge is lower than the set pressure. This not only reduces the operating environment temperature, but also prevents cross-linking byproducts from corroding parts such as motors.

[0031] The main motor 4 is installed in the upper part of the water jacket 3, and the main motor base 6 is installed in the lower part of the main motor 4. The main motor 4 is mounted on the main motor base 6.

[0032] Specifically, such as Figure 3 and Figure 5 As shown, the insulating seal 2 is provided with a terminal 1. The terminal 1 installed on one side of the insulating seal 2 is connected to the main motor 4 by a cable. The main motor 4 is fixed to the main motor base 6 by bolts and connected to the output shaft 7 by a coupling 5. The output shaft 7 is positioned by the bearing on the bearing positioning sleeve 9, and a fan impeller 11 is fixed at the end of the output shaft 7.

[0033] The output end of the main motor 4 is connected to one end of the coupling 5, and the other end of the coupling 5 is connected to the output shaft 7. An output shaft positioning sleeve 8 is provided at the lower end of the main motor base 6, and the output shaft 7 is installed inside the output shaft positioning sleeve 8. A bearing positioning sleeve 9 is fitted onto one end of the output shaft 7, and a fan impeller 11 is installed on the bearing positioning sleeve 9. The fan impeller 11 is installed inside the fan housing 12.

[0034] Specifically, the output shaft positioning sleeve 8 and the bearing positioning sleeve 9 are fixed with bolts and then precision machined to ensure the coaxiality of both ends of the output shaft 7 and reduce rotational noise and vibration. The output shaft positioning sleeve 8 keeps the main motor 4 away from the fan impeller 11, reducing the corrosion of the main motor 4 by cross-linking byproducts.

[0035] Specifically, the output shaft positioning sleeve 8 is connected to the upper main motor base 6 and the lower bearing positioning sleeve 9 by bolts, and then fixed to the fan housing by bolts. The water jacket 3 is fastened to the fan housing by bolts, and an O-ring is used for sealing between the fan housing and the water jacket 3. The air inlet 18 and air outlet 19 of the fan housing 12 are respectively connected to the flange of the pipeline, and it can work after being powered on.

[0036] like Figure 2 As shown, the main motor base 6 of this utility model is used to connect the fan motor 4 and the output shaft positioning sleeve 8.

[0037] The main motor 4, coupling 5, and output shaft 7 are all located inside the water jacket 3.

[0038] Specifically, such as Figure 4As shown, the main motor 4, coupling 5 and output shaft 7 are cooled by the water jacket 3. The water jacket 3 has a spiral groove in the interlayer to allow the cold water to circulate. The water jacket 3 has an inlet 20 and an outlet 21 and is equipped with corresponding pipes to allow the cooling water to circulate and achieve cooling.

[0039] Specifically, the bearing positioning sleeve 9, the fan impeller 11, the fan housing 12, the output shaft 7, and the matching bearings are all made of corrosion-resistant 304 stainless steel. The fan housing 12 is equipped with an air inlet 18 and an air outlet 19 flange, which are connected to the vulcanization pipe and the cross-linking by-product capture pipe of the production line through gaskets and bolts, respectively.

[0040] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A ducted fan for a tower, characterized by, The device includes a water jacket, an insulating seal, and a terminal block. The insulating seal is located at one end of the upper part of the water jacket, and a second sealing ring is located between the water jacket and the insulating seal. A terminal block is located on the upper part of the insulating seal. A fan housing is located at the lower end of the water jacket, and a first sealing ring is located between the fan housing and the water jacket. An air inlet is located at the middle position of the upper part of the water jacket. The water jacket has an internal interlayer with spiral grooves in the interlayer as a cooling water circulation channel.

2. A ducted fan for a tower as claimed in claim 1, wherein, The insulating seal and the water jacket are connected by bolts, and the insulating seal and the water jacket are sealed by a second sealing ring.

3. A ducted fan for a tower as claimed in claim 1, wherein, The fan housing is provided with a bolt hole group, which includes an inner bolt hole and an outer bolt hole. The outer bolt hole is used to connect the water jacket and the fan housing.

4. A ducted fan for a tower according to claim 3, wherein The inner bolt holes are used to connect the fan housing and the output shaft positioning sleeve, which is located inside the water jacket.

5. A ducted fan for a tower according to claim 1, wherein A pressure gauge interface is provided at the other end of the upper part of the water jacket, and both the first sealing ring and the second sealing ring are O-rings.

6. A ducted fan for a tower according to claim 1, wherein The main motor is installed in the upper part of the water jacket, and a main motor base is installed at the lower end of the main motor. The main motor is mounted on the main motor base.

7. A ducted fan for a tower according to claim 6, wherein The output end of the main motor is connected to one end of the coupling, and the other end of the coupling is connected to the output shaft.

8. A ducted fan for a tower according to claim 7, wherein The lower end of the main motor base is provided with an output shaft positioning sleeve, and the output shaft is installed inside the output shaft positioning sleeve.

9. A ducted fan for a tower according to claim 8, wherein A bearing positioning sleeve is fitted onto one end of the output shaft, and a fan impeller is mounted on the bearing positioning sleeve. The fan impeller is located inside the fan housing.

10. A ducted fan for a tower according to claim 9, wherein The main motor, coupling, and output shaft are all located inside the water jacket.

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