A high and low pressure hydraulic pump station for a fluid viscous clutch with multi-sensor information fusion

Abstract

The present invention relates to a hydraulic pump, specifically a high-low pressure hydraulic pump station for a fluid viscous clutch with multi-sensor information fusion. Its high-pressure oil system includes a high-pressure oil tank, a pressure pump, a high-pressure working oil pressure sensor, a relief valve, an electro-hydraulic three-position four-way directional control valve, a high-pressure working oil filter, and a high-pressure working oil differential pressure sensor. The low-pressure oil system includes a low-pressure oil tank, a low-pressure lubricating oil temperature sensor, a low-pressure lubricating oil pressure sensor, a low-pressure lubricating oil filter, a low-pressure lubricating oil cooling fan, a low-pressure lubricating oil inlet pressure sensor, a low-pressure lubricating oil inlet temperature sensor, a low-pressure lubricating oil pressure pump, a low-pressure lubricating oil flowmeter, a low-pressure lubricating oil tank temperature sensor, a low-pressure lubricating oil return filter, a low-pressure lubricating oil return pump, and a low-pressure oil tank level sensor. The present invention establishes a high-low pressure hydraulic pump station for a fluid viscous clutch with multi-sensor information fusion. By setting various sensors, various conditions of the oil tank can be monitored and measured.

Description

Technical Field

[0001] The present invention relates to a hydraulic pump, specifically a high and low pressure hydraulic pump station for a fluid viscous clutch with multi-sensor information fusion. Background Art

[0002] With the rapid development of productivity and the continuous improvement of modernization, energy consumption has increased sharply, leading to an energy crisis and rising energy prices. The stable operation of the hydraulic system in hydraulic transmission is extremely important. It has its advantages: self-lubrication; the compressibility of the liquid medium is very small, and the operation is stable; combined with electricity, it is easy to realize various automatic working cycles; high-frequency commutation can be achieved, with fast response and small impact. However, with its advantages, there will inevitably be disadvantages: high maintenance cost of the hydraulic system and difficult repair of faults; pressure loss in the pipeline causes system heating; attention needs to be paid to the fire prevention of the oil. Summary of the Invention

[0003] The purpose of the present invention is to establish a high and low pressure integrated hydraulic pump to supply oil to the fluid viscous clutch. By setting a variety of sensors, various conditions of the fuel tank can be monitored and measured, thus providing a high and low pressure hydraulic pump station with multi-sensor information fusion.

[0004] The present invention is realized by adopting the following technical scheme: A high and low pressure hydraulic pump station for a fluid viscous clutch with multi-sensor information fusion includes a high pressure oil system and a low pressure oil system.

[0005] Among them, the high pressure oil system includes a high pressure fuel tank, a pressure pump, a high pressure working oil pressure sensor, a relief valve, an electro-hydraulic three-position four-way directional control valve, a high pressure working oil filter, and a high pressure working oil differential pressure sensor; the inlet of the pressure pump is connected to the high pressure fuel tank, the outlet of the pressure pump is connected to the high pressure working oil filter, a relief valve is installed between the pressure pump and the high pressure working oil filter, and the relief valve is connected to the high pressure fuel tank. A high pressure working oil differential pressure sensor is installed at the inlet and outlet of the high pressure working oil filter. The outlet of the high pressure working oil filter is connected to the inlet port P of the electro-hydraulic three-position four-way directional control valve, and a high pressure working oil pressure sensor is installed between the high pressure working oil filter and the electro-hydraulic three-position four-way directional control valve; the return port T of the electro-hydraulic three-position four-way directional control valve is connected to the high pressure fuel tank, the working port B of the electro-hydraulic three-position four-way directional control valve supplies oil to the external fluid viscous clutch, and the return oil of the fluid viscous clutch returns to the high pressure fuel tank again.

[0006] For the high-pressure oil system part, when the pressure pump operates, the oil fluid enters the oil circuit through the pressure pump, and then passes through the high-pressure working oil filter to filter the oil fluid. After that, an electro-hydraulic three-position four-way directional control valve is installed in the circuit. After receiving the electrical analog signal, it outputs the modulated flow rate and pressure accordingly, and then is displayed through the high-pressure working oil pressure sensor, achieving the function of real-time monitoring of the high-pressure working oil pressure. And a differential pressure sensor is installed beside the high-pressure working oil filter, which can detect the oil pressure difference between the inlet and outlet of the filter.

[0007] The low-pressure oil system includes a low-pressure oil tank, a low-pressure lubricating oil temperature sensor, a low-pressure lubricating oil pressure sensor, a low-pressure lubricating oil filter, a low-pressure lubricating oil cooling fan, a low-pressure lubricating oil inlet pressure sensor, a low-pressure lubricating oil inlet temperature sensor, a low-pressure lubricating oil pressure pump, a low-pressure lubricating oil flowmeter, a low-pressure lubricating oil tank temperature sensor, a low-pressure lubricating oil return filter, a low-pressure lubricating oil return pump, and a low-pressure oil tank level sensor; the inlet of the low-pressure lubricating oil pressure pump is connected to the low-pressure oil tank, the outlet of the low-pressure lubricating oil pressure pump is connected to the low-pressure lubricating oil filter, and a low-pressure lubricating oil temperature sensor and a low-pressure lubricating oil pressure sensor are also installed at the outlet of the low-pressure lubricating oil pressure pump to measure the temperature and oil pressure of the oil fluid after passing through the low-pressure lubricating oil pressure pump. The outlet of the low-pressure lubricating oil filter is connected to the low-pressure lubricating oil flowmeter, and the oil circuit between the low-pressure lubricating oil filter and the low-pressure lubricating oil flowmeter is cooled by the low-pressure lubricating oil cooling fan. A low-pressure lubricating oil inlet pressure sensor and a low-pressure lubricating oil inlet temperature sensor are arranged on the oil circuit between the low-pressure lubricating oil filter and the low-pressure lubricating oil flowmeter to measure the oil fluid temperature and pressure when the oil fluid enters the flowmeter after passing through the low-pressure lubricating oil cooling fan. The outlet of the low-pressure lubricating oil flowmeter is connected to the low-pressure lubricating oil return pump, the outlet of the low-pressure lubricating oil return pump is connected to the low-pressure lubricating oil return filter, and the low-pressure lubricating oil return filter is connected to the low-pressure oil tank. A low-pressure lubricating oil tank temperature sensor and a low-pressure oil tank level sensor are installed at the tank opening to measure the temperature and height of the oil fluid in the tank.

[0008] For the low-pressure oil system part, the low-pressure lubricating oil pressure pump starts, and the low-pressure oil tank supplies oil. First, the low-pressure lubricating oil temperature sensor monitors the oil temperature at the oil inlet. Subsequently, the oil continues to flow, and the low-pressure lubricating oil pressure sensor monitors the oil pressure to prevent excessive oil pressure from having an adverse impact on the passage. The oil that enters after the low-pressure lubricating oil pressure pump starts is finely filtered by the low-pressure lubricating oil filter. Then, the oil flows through and enters the low-pressure lubricating oil cooling fan for temperature reduction of the oil to prevent potential safety hazards caused by excessive oil temperature. Next, the oil passes through the low-pressure lubricating oil inlet pressure sensor and the low-pressure lubricating oil inlet temperature sensor. In the subsequent oil circuit, a low-pressure lubricating oil flowmeter is installed to monitor the flow rate. When starting the low-pressure lubricating oil pressure pump, the low-pressure lubricating oil return pump is started simultaneously. When the oil passes through, it drives the oil to change direction, and then it is roughly filtered by the low-pressure lubricating oil return filter and flows back into the oil tank, realizing the recycling of the oil, saving resources, and achieving lubrication protection at the same time. There is a low-pressure oil tank liquid level sensor on the oil tank that can monitor the position of the oil in the oil tank in real time to prevent the oil in the oil tank from being too much or too little. The low-pressure system cooling fan can reduce the oil temperature to prevent the oil temperature from being too high, as too high a temperature will affect the lubrication effect of the low-pressure system.

[0009] The present invention establishes a high and low pressure hydraulic pump station for a fluid viscous clutch with multi-sensor information fusion. By setting a variety of sensors, various conditions of the oil tank can be monitored and measured. Brief Description of the Drawings

[0010] Figure 1 is the schematic diagram of the low-pressure oil system.

[0011] Figure 2 is the schematic diagram of the high-pressure oil system.

[0012] Figure 3 is the installation layout diagram of the present invention.

[0013] Figure 4 is Figure 3 the side view of.

[0014] Figure 5 is Figure 3 the top view of.

[0015] In the figure: 1 - pressure pump, 2 - high-pressure working oil pressure sensor, 3 - high-pressure working oil directional control valve seat, 4 - low-pressure lubricating oil temperature sensor, 5 - low-pressure lubricating oil pressure sensor, 6 - low-pressure lubricating oil filter, 7 - low-pressure lubricating oil cooling fan, 8 - low-pressure lubricating oil inlet pressure sensor, 9 - low-pressure lubricating oil inlet temperature sensor, 10 - low-pressure lubricating oil pump, 11 - low-pressure lubricating oil flowmeter, 12 - electro-hydraulic three-position four-way directional control valve, 13 - high-pressure working oil filter, 14 - low-pressure lubricating oil tank temperature sensor, 15 - low-pressure lubricating oil return filter, 16 - low-pressure lubricating oil return pump, 17 - low-pressure oil tank level sensor, 18 - high-pressure working oil differential pressure sensor, 19 - CST fluid viscous clutch, 20 - pressure sensor, 21 - speed control valve, 22 - high-pressure oil tank, 23 - low-pressure oil tank, 24 - relief valve. Specific implementation mode

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] A high and low pressure hydraulic pump station of a fluid viscous clutch with multi-sensor information fusion according to the present invention includes a high-pressure oil system and a low-pressure oil system.

[0018] The high-pressure oil system includes a high-pressure oil tank 22, a pressure pump 1, a high-pressure working oil pressure sensor 2, a relief valve 24, an electro-hydraulic three-position four-way directional control valve 12, a high-pressure working oil filter 13, and a high-pressure working oil differential pressure sensor 18;

[0019] Figure 2 As shown in the schematic diagram of the high-pressure oil system, the pressure pump 1 works, and high-pressure oil enters the oil circuit, and then passes through the high-pressure working oil filter 13. A relief valve 24 is installed between the pressure pump 1 and the high-pressure working oil filter 13, and the relief valve 24 is connected to the high-pressure oil tank 22. The relief valve mainly plays a role of constant pressure overflow in hydraulic equipment, and also plays roles of voltage stabilization, system unloading, and safety protection. A high-pressure working oil differential pressure sensor 18 is installed at the inlet and outlet of the high-pressure working oil filter 13 to measure the oil pressure difference on both sides of the high-pressure working oil filter 13. Then the oil flows to the electro-hydraulic three-position four-way directional control valve 12, and a high-pressure working oil pressure sensor 2 is installed between the high-pressure working oil filter 13 and the electro-hydraulic three-position four-way directional control valve to measure the oil pressure.

[0020] From a logical perspective, the electro-hydraulic three-position four-way directional control valve 12 consists of a two-position four-way directional control valve and a stationary position. The three-position four-way directional control valve has various center position function forms (as shown in the three-position four-way directional control valve in the figure, its center position function is of type M). This directional control valve has two states:

[0021] (1)The inlet port P is connected to the working port B, while the working port A is connected to the return port T. The three-position four-way directional control valve can be either a spool valve structure or a switching valve structure. At this time, high-pressure oil can pass through the directional control valve and enter the CST fluid viscous clutch 19. A pressure sensor 20 is installed between the CST fluid viscous clutch 19 and the directional control valve to measure the pressure generated by the oil. Then, the oil flows back to the high-pressure oil tank through the flow control valve 21. The flow of the high-pressure oil system provides oil to the CST fluid viscous clutch 19, which can ensure the operation of the clutch.

[0022] (2)The three-position four-way directional control valve is in the static position. At this time, the inlet port P is connected to the return port T, while the working ports A and B are closed. Since the oil from the outlet of the pressure pump 1 flows to the high-pressure oil tank, this working position is called the unloading of the pressure pump 1 or the bypass of the pressure pump. Under the condition of the unloading of the pressure pump 1, its working pressure is only the resistance loss of the three-position four-way directional control valve, which does not cause the system to heat up. In this state, the oil passes through the high-pressure working oil filter 13 and then directly flows back to the oil tank through the directional control valve.

[0023] The low-pressure oil system includes a low-pressure oil tank 23, a low-pressure lubricating oil temperature sensor 4, a low-pressure lubricating oil pressure sensor 5, a low-pressure lubricating oil filter 6 (fine filter), a low-pressure lubricating oil cooling fan 7, a low-pressure lubricating oil inlet pressure sensor 8, a low-pressure lubricating oil inlet temperature sensor 9, a low-pressure lubricating oil pressure pump 10, a low-pressure lubricating oil flowmeter 11, a low-pressure lubricating oil tank temperature sensor 14, a low-pressure lubricating oil return filter 15 (coarse filter), a low-pressure lubricating oil return pump 16, and a low-pressure oil tank level sensor 17.

[0024] Figure 1 For the schematic diagram of the low-pressure oil system, when the low-pressure lubricating oil pressure pump 10 runs and starts, the oil enters the oil circuit. A low-pressure lubricating oil temperature sensor 4 and a low-pressure lubricating oil pressure sensor 5 are installed on the oil circuit to measure the temperature and oil pressure of the oil after passing through the low-pressure lubricating oil pressure pump 10. Then, the oil is finely filtered through the low-pressure lubricating oil filter 6. Then, it passes through the low-pressure lubricating oil inlet temperature sensor 8 and the low-pressure lubricating oil inlet pressure sensor 9 to measure the oil temperature and pressure of the oil after passing through the low-pressure lubricating oil cooling fan 7. Then, the oil flow rate is monitored through the low-pressure lubricating oil flowmeter 11. Then, it passes through the low-pressure lubricating oil return pump 16 and is coarsely filtered through the low-pressure lubricating oil return filter 15 and then returns to the low-pressure oil tank. In addition, a low-pressure lubricating oil tank temperature sensor 14 and a low-pressure oil tank level sensor 17 are installed at the oil tank port to measure the temperature and height of the oil in the oil tank.

Claims

1. A high and low pressure hydraulic pump station for a fluid viscous clutch with multi-sensor information fusion, characterized in that: It includes a high-pressure oil system and a low-pressure oil system; The high-pressure oil system includes a high-pressure oil tank (22), a pressure pump (1), a high-pressure working oil pressure sensor (2), a relief valve (24), an electro-hydraulic three-position four-way directional control valve (12), a high-pressure working oil filter (13), and a high-pressure working oil differential pressure sensor (18); the inlet of the pressure pump (1) is connected to the high-pressure oil tank (22), the outlet of the pressure pump (1) is connected to the high-pressure working oil filter (13), a relief valve (24) is installed between the pressure pump (1) and the high-pressure working oil filter (13), the relief valve (24) is connected to the high-pressure oil tank, a high-pressure working oil differential pressure sensor (18) is installed at the inlet and outlet of the high-pressure working oil filter (13), the outlet of the high-pressure working oil filter (13) is connected to the inlet port P of the electro-hydraulic three-position four-way directional control valve (12), and a high-pressure working oil pressure sensor (2) is installed between the high-pressure working oil filter (13) and the electro-hydraulic three-position four-way directional control valve (12); the oil return port T of the electro-hydraulic three-position four-way directional control valve (12) is connected to the high-pressure oil tank, and the working port B of the electro-hydraulic three-position four-way directional control valve (12) supplies oil to external equipment; The low-pressure oil system includes a low-pressure oil tank (23), a low-pressure lubricating oil temperature sensor (4), a low-pressure lubricating oil pressure sensor (5), a low-pressure lubricating oil filter (6), a low-pressure lubricating oil cooling fan (7), a low-pressure lubricating oil inlet pressure sensor (8), a low-pressure lubricating oil inlet temperature sensor (9), a low-pressure lubricating oil pressure pump (10), a low-pressure lubricating oil flowmeter (11), a low-pressure lubricating oil tank temperature sensor (14), a low-pressure lubricating oil return filter (15), a low-pressure lubricating oil return pump (16), and a low-pressure oil tank level sensor (17); the inlet of the low-pressure lubricating oil pressure pump (10) is connected to the low-pressure oil tank (23), the outlet of the low-pressure lubricating oil pressure pump (10) is connected to the low-pressure lubricating oil filter (6), a low-pressure lubricating oil temperature sensor (4) and a low-pressure lubricating oil pressure sensor (5) are also installed at the outlet of the low-pressure lubricating oil pressure pump (10), the outlet of the low-pressure lubricating oil filter (6) is connected to the low-pressure lubricating oil flowmeter (11), the oil circuit between the low-pressure lubricating oil filter (6) and the low-pressure lubricating oil flowmeter (11) is cooled by the low-pressure lubricating oil cooling fan (7), a low-pressure lubricating oil inlet pressure sensor (8) and a low-pressure lubricating oil inlet temperature sensor (9) are arranged on the oil circuit between the low-pressure lubricating oil filter (6) and the low-pressure lubricating oil flowmeter (11), the outlet of the low-pressure lubricating oil flowmeter (11) is connected to the low-pressure lubricating oil return pump (16), the outlet of the low-pressure lubricating oil return pump (16) is connected to the low-pressure lubricating oil return filter (15), the low-pressure lubricating oil return filter (15) is connected to the low-pressure oil tank, and a low-pressure lubricating oil tank temperature sensor (14) and a low-pressure oil tank level sensor (17) are installed at the oil tank port.

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