Novel duplex pump dynamic regulation fan hydraulic lubrication combination device

Abstract

The utility model discloses a novel duplex pump dynamic regulation fan hydraulic lubrication combination device which is characterized in that an oil tank is connected with two groups of duplex gear pumps, one pump of the duplex gear pumps is connected with a hydraulic oil supply system for hydraulic oil supply, and the other pump of the duplex gear pumps is connected with a lubrication oil supply system for lubrication oil supply; the hydraulic oil supply system comprises a filtering device connected with the duplex gear pump, a pipeline behind the filtering device leads to the oil outlet, and a high-pressure ball valve is arranged on the pipeline behind the filtering device; the lubricating oil supply system comprises a filtering device connected with the duplex gear pump, a cooling device is connected behind the filtering device, a pipeline behind the cooling device leads to an oil supply port, the cooler adopts a switching bypass, the bypass of the cooler is switched by utilizing a three-way ball valve, and oil directly enters a lubricating point without passing through the cooler by switching the three-way ball valve. Hydraulic pressure and lubrication are independently carried out through the single motor, the hydraulic pressure and the lubrication oil pump do not affect each other, and it is guaranteed that oil is at the most appropriate oil temperature.

Description

Technical Field

[0001] This utility model relates to a hydraulic lubrication device for a dual-pump-driven adjustable fan. Background Technology

[0002] Existing hydraulic lubrication systems for dynamically adjustable fans cannot operate independently via a single motor; the hydraulic and lubrication pumps interfere with each other, affecting performance and efficiency. Furthermore, these systems cannot guarantee the oil is at the optimal temperature, impacting lubrication and cooling effectiveness. Utility Model Content

[0003] The purpose of this utility model is to provide a novel dual-pump-driven adjustable fan hydraulic lubrication combined device that enables independent hydraulic and lubrication operations through a single motor, with the hydraulic and lubrication oil pumps not affecting each other, and ensuring that the oil is kept at the most suitable oil temperature.

[0004] The technical solution of this utility model is:

[0005] A novel hydraulic lubrication combined device for a dual-pump dynamic adjustable fan includes an oil tank. The oil tank is characterized by having two sets of dual-gear pumps connected to it, one for use and the other for standby. One pump is connected to a hydraulic oil supply system for hydraulic oil supply, while the other is connected to a lubrication oil supply system for lubrication oil supply, allowing independent supply of hydraulic and lubricating oil. The hydraulic oil supply system includes a filter device connected to the dual-gear pump, consisting of two parallel filters. A pipeline downstream of the filter device leads to the oil outlet, and a high-pressure ball valve is installed on this pipeline. The lubrication oil supply system also includes a filter device connected to the dual-gear pump, consisting of two parallel filters. A cooling device is connected downstream of the filter device, consisting of two parallel water coolers. A pipeline downstream of the cooling device leads to the oil supply outlet. The coolers employ a bypass switching mechanism, using a three-way ball valve to switch the bypass. When the ambient temperature is low and oil cooling is not required, the oil bypasses the cooler and directly enters the lubrication point by switching the three-way ball valve.

[0006] The water cooler is a 316L stainless steel brazed plate cooler.

[0007] This invention employs a double gear pump for oil supply, allowing independent supply of hydraulic and lubricating oil. However, only a single electric motor is needed to enable simultaneous operation of the lubricating oil pump and the hydraulic oil pump, facilitating fan blade angle adjustment and bearing lubrication and cooling. A cooler is installed in the lubrication circuit, featuring a bypass design. The system utilizes a three-way ball valve to switch the cooler's bypass. When the ambient temperature is low and oil cooling is not required, the three-way ball valve can be switched, allowing the oil to bypass the cooler and directly enter the lubrication points, ensuring the oil is at the optimal temperature and maximizing lubrication effectiveness. Attached Figure Description

[0008] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0009] Figure 1 This is a structural schematic diagram of one embodiment of the present invention. Detailed Implementation

[0010] A novel hydraulic lubrication combined device for a dual-pump adjustable fan includes an oil tank 1, which is connected to two sets of dual-gear pumps 2, one for use and the other for standby. One pump in the dual-gear pumps is connected to a hydraulic oil supply system for hydraulic oil supply, and the other pump is connected to a lubrication oil supply system for lubrication oil supply, allowing the hydraulic oil and lubricating oil to be supplied independently. The hydraulic oil supply system includes a filter device 3 connected to the dual-gear pumps, which consists of two parallel filters. The pipeline after the filter device leads to the oil outlet 4, and a high-pressure ball valve 5 is installed on the pipeline after the filter device. The lubrication oil supply system includes a filter device 6 connected to the dual-gear pumps, which consists of two parallel filters. The filter device is connected to a cooling device, which consists of two parallel water coolers 7. The pipeline after the cooling device leads to the oil supply port 8. The coolers use a bypass switching 9, which uses a three-way ball valve to switch the bypass of the coolers. When the ambient temperature is low and the oil does not need cooling, the oil can directly enter the lubrication point without passing through the cooler by switching the three-way ball valve 10.

[0011] The water cooler is a 316L stainless steel brazed plate cooler.

[0012] The system uses a double gear pump for oil supply. This double pump has low operating noise, good adaptability to impact loads, and a high power ratio, making it more energy-efficient and effective during operation. The system only requires a single electric motor, allowing the lubricating oil pump and hydraulic oil pump to work simultaneously, enabling the adjustment of the fan blade angle and the lubrication and cooling of the bearings.

[0013] A cooler is installed in the lubrication oil circuit, employing a bypass design. The system uses a three-way ball valve to switch the cooler's bypass. When the ambient temperature is low and oil cooling is not required, the three-way ball valve can be switched to allow the oil to bypass the cooler, ensuring the system reaches its optimal supply temperature. Furthermore, this three-way ball valve can also serve as an online maintenance valve for the cooler, enabling online maintenance without shutting down the system.

[0014] The cooling oil is cooled by a 316L stainless steel brazed plate cooler. The 316L stainless steel plates have higher corrosion resistance, making them more suitable for corrosive coastal environments. This also improves the cooling efficiency of the equipment. In addition, the plate cooler has high pressure resistance, a small size, and is easier to maintain. The cooler uses a brazing process to prevent plate leakage caused by excessive pressure, making its performance more reliable.

[0015] Main technical performance indicators

[0016] 1. Nominal pressure of regulating oil: 8MPa; Nominal pressure of lubricating oil: 0.4MPa

[0017] 2. Nominal flow rate of regulating oil: 10L / min; Nominal flow rate of lubricating oil: 60L / min

[0018] 3. Adjust oil filtration accuracy: 25μm

[0019] 4. Oil supply temperature: ≤45°C

[0020] 5. Noise level: ≤85dB(A)

[0021] 6. Operating medium: L-TSA46, L-TSA68 turbine oil

[0022] Application Scope

[0023] It is mainly used in the thermal power generation industry for adjusting the blade angle of dynamic axial flow fans and for lubrication and cooling of bearings.

Claims

1. A novel hydraulic lubrication combined device for a dual-pump-driven adjustable fan, comprising an oil tank, characterized in that: The oil tank is connected with two sets of double gear pumps, one set is used and the other set is standby, one pump in the double gear pump is connected with the hydraulic oil supply system to carry out hydraulic oil supply, and the other pump is connected with the lubricating oil supply system to carry out lubricating oil supply, so that the hydraulic oil and the lubricating oil are independently supplied; the hydraulic oil supply system comprises a filter device connected with the double gear pump, the filter device is composed of two parallel filters, a pipeline after the filter device is connected with an oil outlet, and a high-pressure ball valve is arranged on the pipeline after the filter device; the lubricating oil supply system comprises a filter device connected with the double gear pump, the filter device is composed of two parallel filters, a cooling device is connected after the filter device, the cooling device is composed of two parallel water coolers, a pipeline after the cooling device is connected with an oil supply port, the cooler adopts a switching bypass, a three-way ball valve is used to switch the bypass of the cooler, when the ambient temperature is low and the oil liquid does not need to be cooled, the three-way ball valve is switched to make the oil liquid not pass through the cooler and directly enter the lubricating point.

2. The new type duplex pump dynamic ventilation fan hydraulic lubrication combined device according to claim 1, characterized in that: The water cooler adopts a 316L stainless steel brazed plate cooler.

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