A hydraulic station and a hydraulic drive system based on gas-liquid supercharging

Abstract

The utility model discloses a kind of hydraulic station and hydraulic drive system based on gas-liquid pressurization, including hydraulic oil tank, gas-liquid pressurization pump, gas source processor, reversing valve and hydraulic control module;The gas-liquid pressurization pump is equipped with oil suction port, oil outlet and pressurization piston, the hydraulic oil tank one-way intercommunication oil suction port;The gas source processor pressure regulating and filter compressed air, and by the reversing valve pipeline connection gas-liquid pressurization pump, the reversing valve controls compressed air to enter gas-liquid pressurization pump, realizes the pressurization piston back and forth reciprocating motion generates high pressure hydraulic oil from the oil outlet output;The hydraulic control module is equipped with high pressure oil line connection oil outlet, the high pressure oil line one-way connection hydraulic control module, and hydraulic control module connects primary-secondary cylinder.The hydraulic station and hydraulic drive system based on gas-liquid pressurization provided by the utility model have the advantages of low energy consumption, low noise, compact structure and easy maintenance.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic power equipment technology, specifically a hydraulic station and hydraulic drive system based on gas-liquid boosting. Background Technology

[0002] Currently, such as Figure 1 As shown, a traditional hydraulic power unit typically consists of a high-power motor (e.g., 10KW), an oil pump, two large-capacity main and auxiliary oil tanks, and a cooling tower. These types of hydraulic power units generally suffer from the following drawbacks: high energy consumption, high noise levels, high operating and maintenance costs; the need for frequent and large-volume hydraulic oil replacements; susceptibility to oil leaks; large size; and complex structure. These disadvantages limit their application in situations with strict requirements regarding energy consumption, noise levels, and space.

[0003] Therefore, the aforementioned technical problems need to be solved. Utility Model Content

[0004] This utility model addresses the above-mentioned technical problems by providing a hydraulic station based on gas-liquid booster, which has the advantages of low energy consumption, low noise, compact structure, and easy maintenance.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A hydraulic power unit based on air-liquid booster includes a hydraulic oil tank, an air-liquid booster pump, an air source processor, a reversing valve, and a hydraulic control module.

[0007] The gas-liquid booster pump is equipped with an oil suction port, an oil outlet, and a booster piston, and the hydraulic oil tank is unidirectionally connected to the oil suction port;

[0008] The air source processor regulates and filters compressed air, and is connected to the air-liquid booster pump through the reversing valve pipeline. The reversing valve controls the compressed air to enter the air-liquid booster pump, so that the booster piston reciprocates to generate high-pressure hydraulic oil, which is output from the oil outlet.

[0009] The hydraulic control module is provided with a high-pressure oil circuit connected to the oil outlet. The high-pressure oil circuit is unidirectionally connected to the hydraulic control module, and the hydraulic control module is connected to the master and slave cylinders.

[0010] This air-liquid booster-based hydraulic station uses an air-liquid booster pump to replace the high-power motor of the traditional hydraulic station as the power source. It can replace the two large main and auxiliary oil tanks of the traditional hydraulic station with a single smaller oil tank, and eliminates the need for numerous hydraulic components such as oil pumps and cooling systems (usually cooling towers).

[0011] Therefore, this gas-liquid booster-based hydraulic station uses less oil, is small in size and easy to install and use; has a simple structure and is easy to maintain; and has lower energy consumption and saves costs compared to traditional hydraulic stations.

[0012] A further optimized solution involves connecting an accumulator to the high-pressure oil line to store the high-pressure hydraulic oil output from the gas-liquid booster pump. The gas-liquid booster pump has a small flow rate, which cannot meet the high flow rate requirements of the actuator during its rapid idle stroke. The accumulator can pre-store high-pressure oil and instantly release a large amount of oil to replenish the actuator when it needs to move rapidly.

[0013] In a further optimized design, the gas-liquid booster pump comprises a front high-pressure pipe, a front cover, a booster cylinder, a rear cover, and a rear high-pressure pipe connected in sequence with sealing connections; the inner diameters of the front high-pressure pipe and the rear high-pressure pipe are both smaller than the inner diameter of the booster cylinder.

[0014] The booster piston is located inside the booster cylinder and reciprocates therein. A front booster rod is provided in the front high-pressure pipe and connected to the booster piston. A rear booster rod is provided in the rear high-pressure pipe and connected to the booster piston.

[0015] The front high-pressure pipe and the rear high-pressure pipe are respectively provided with the oil suction port and the oil outlet. The front booster rod or the rear booster rod moves under the drive of the booster piston and draws hydraulic oil from the hydraulic oil tank from the oil suction port. After moving in the opposite direction, the hydraulic oil is boosted and output as high-pressure hydraulic oil from the oil outlet.

[0016] The booster piston pressurizes hydraulic oil by setting a front booster rod and a rear booster rod, so that the booster piston moves back and forth and outputs high-pressure hydraulic oil evenly, which significantly improves work efficiency.

[0017] In a further optimized design, a magnetic ring is provided on the booster piston, and a first magnetic switch and a second magnetic switch are provided on the outside of the gas-liquid booster pump according to the stroke interval of the booster piston;

[0018] When the booster piston moves to the sensing position of the first magnetic switch or the second magnetic switch, it sends a signal to the reversing valve. The reversing valve changes the air intake position of the gas-liquid booster pump, thereby driving the booster piston to reverse its movement, thus realizing the reciprocating cyclic movement of the booster piston.

[0019] Further optimization of the scheme involves using either a solenoid-operated or pneumatically controlled directional valve for the reversing valve.

[0020] A hydraulic drive system includes a hydraulic station based on gas-liquid boosting and a master cylinder as described above, wherein the output port of the high-pressure oil circuit is connected to the input port of the master cylinder through a hydraulic control module.

[0021] Further optimization of the design includes a filling valve, through which the hydraulic control module is connected to the input port of the master and slave cylinders; the filling valve is equipped with inlet and outlet oil pipes connecting to the hydraulic oil tank. The filling valve is a large, dedicated hydraulically controlled check valve that can quickly replenish a large amount of oil to the oil chamber of the master and slave cylinders, preventing cavitation, and can reliably close the oil circuit during high-pressure operation.

[0022] This utility model has the following technical advantages compared with the prior art:

[0023] 1. Significant energy saving and consumption reduction: No high-power motor is required, only a small amount of electricity is needed to control the solenoid valve, and the main energy source is compressed air, resulting in extremely low overall energy consumption (for example, a system with an output of 60 tons consumes about 0.03 kWh per hour).

[0024] 2. Low noise level: It eliminates the huge noise generated by high-power motors and oil pumps, with the main noise source being exhaust noise, making the working environment quieter.

[0025] 3. Low operating and maintenance costs: The small oil tank results in less hydraulic oil consumption and slower oil contamination, extending the replacement cycle to 2-3 years, which greatly reduces the cost of hydraulic oil and waste oil disposal.

[0026] 4. Compact structure and small size: It eliminates the need for a large motor, large oil tank and cooling system. The whole system has a simple structure, high integration and small footprint.

[0027] 5. High reliability and easy maintenance: Few parts, few points of failure, and simple maintenance. Attached Figure Description

[0028] Figure 1 This is a simplified structural diagram of a traditional hydraulic station driving a master cylinder;

[0029] Figure 2 This is a three-dimensional structural view of a specific embodiment of the hydraulic station based on gas-liquid boosting and its application in driving master and slave cylinders according to this utility model;

[0030] Figure 3 yes Figure 2 A stereoscopic view from another perspective;

[0031] Figure 4 yes Figure 2 Example: Hydraulic circuit piping diagram;

[0032] Figure 5 yes Figure 2 Cross-sectional view of a gas-liquid booster pump.

[0033] In the diagram: hydraulic oil tank 10, air-hydraulic booster pump 20, oil suction port 21, oil outlet 22, booster piston 23, front high-pressure pipe 24, front cover 25, booster cylinder 26, rear cover 27, rear high-pressure pipe 28, front booster rod 29, rear booster rod 2a, magnetic ring 2b, first magnetic switch 2c, second magnetic switch 2d, air source processor 30, reversing valve 40, hydraulic control module 50, high-pressure oil circuit 51, solenoid valve 52, pressure reducing valve 53, accumulator 60, master cylinder 70, filling valve 71, inlet and outlet oil pipes 72. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0035] like Figures 2 to 5 As shown, this utility model is based on a specific embodiment of a hydraulic station with gas-liquid boosting, and a specific embodiment of the hydraulic station applied to a hydraulic drive system for driving master and slave cylinders.

[0036] like Figure 2 and Figure 3 As shown, the hydraulic station based on air-liquid booster in this embodiment includes a hydraulic oil tank 10, an air-liquid booster pump 20, an air source processor 30, a reversing valve 40, and a hydraulic control module 50.

[0037] like Figure 4 and Figure 5 As shown, the gas-liquid booster pump 20 is equipped with an oil suction port 21, an oil outlet 22 and a booster piston 23, and the hydraulic oil tank 10 is unidirectionally connected to the oil suction port 21.

[0038] like Figure 2 and Figure 3 As shown, the air source processor 30 regulates and filters compressed air, and is connected to the air-hydraulic booster pump 20 via a reversing valve 40. The reversing valve 40 controls the compressed air to enter the air-hydraulic booster pump 20, realizing the reciprocating motion of the booster piston 23 to generate high-pressure hydraulic oil, which is output from the oil outlet 22. The hydraulic control module 50 is provided with a high-pressure oil circuit 51 connected to the oil outlet 22. The high-pressure oil circuit 51 is unidirectionally connected to the hydraulic control module 50, and the hydraulic control module 50 is connected to the master cylinder 70. The hydraulic control module 50 also includes other components such as a solenoid valve 52 and a pressure reducing valve 53; the reversing valve 40 is a solenoid reversing valve or a pneumatic reversing valve.

[0039] This air-liquid booster-based hydraulic station uses an air-liquid booster pump 20 to replace the high-power motor of the traditional hydraulic station as the power source. It can replace the two large-capacity main and auxiliary oil tanks of the traditional hydraulic station with a single smaller oil tank, and eliminates the need for numerous hydraulic components such as oil pumps and cooling systems (usually cooling towers).

[0040] Therefore, this gas-liquid booster-based hydraulic station uses less oil, is small in size and easy to install and use; has a simple structure and is easy to maintain; and has lower energy consumption and saves costs compared to traditional hydraulic stations.

[0041] like Figure 2 , Figure 3 and Figure 4 As shown, the high-pressure oil circuit 51 is connected to the accumulator 60 to store the high-pressure hydraulic oil output from the pneumatic-hydraulic booster pump 20. The pneumatic-hydraulic booster pump 20 has a small flow rate, which cannot meet the large flow rate requirements of the actuator during its rapid idle stroke. The accumulator 60 can pre-store high-pressure oil and instantly release a large amount of oil to replenish the actuator when it needs to move rapidly.

[0042] like Figure 5 As shown, the gas-liquid booster pump 20 includes a front high-pressure pipe 24, a front cover 25, a booster cylinder 26, a rear cover 27, and a rear high-pressure pipe 28 that are sequentially sealed and connected. The inner diameters of the front high-pressure pipe 24 and the rear high-pressure pipe 28 are both smaller than the inner diameter of the booster cylinder 26. The booster piston 23 is located inside the booster cylinder 26 and reciprocates therein. A front booster rod 29 is provided inside the front high-pressure pipe 24 to connect to the booster piston 23, and a rear booster rod 2a is provided inside the rear high-pressure pipe 28 to connect to the booster piston 23.

[0043] like Figure 5 As shown, the ends of the front high-pressure pipe 24 and the rear high-pressure pipe 28 are respectively provided with an oil suction port 21 and an oil outlet 22; the front booster rod 29 or the rear booster rod 2a moves under the drive of the booster piston 23 and draws hydraulic oil from the hydraulic oil tank 10 through the oil suction port 21. After reversing the movement, the hydraulic oil is boosted and output as high-pressure hydraulic oil from the oil outlet 22.

[0044] The booster piston 23 pressurizes hydraulic oil by setting a front booster rod 29 and a rear booster rod 2a, so that the booster piston 23 moves back and forth and outputs high-pressure hydraulic oil evenly; that is, when the front booster rod 29 draws in hydraulic oil, the rear booster rod 2a pressurizes hydraulic oil and outputs high-pressure hydraulic oil, and vice versa. This significantly improves working efficiency.

[0045] like Figure 3 and Figure 5 As shown, a magnetic ring 2b is provided on the booster piston 23. A first magnetic switch 2c and a second magnetic switch 2d are provided on the outside of the gas-liquid booster pump 20 according to the stroke spacing of the booster piston 23. When the booster piston 23 moves to the sensing position of the first magnetic switch 2c or the second magnetic switch 2d, it sends a signal to the reversing valve 40. The reversing valve 40 changes the air intake position of the gas-liquid booster pump 20 and drives the booster piston 23 to reverse its movement, thereby realizing the reciprocating cyclic movement of the booster piston 23.

[0046] This utility model also discloses a hydraulic drive system, including the above-mentioned hydraulic station based on gas-liquid boosting and a master cylinder 70. The output port of the high-pressure oil circuit 51 is connected to the input port of the master cylinder 70 through the hydraulic control module 50.

[0047] like Figure 2 and Figure 3 As shown, the hydraulic drive system also includes a filling valve 71. The hydraulic control module 50 is connected to the input port of the master cylinder 70 through the filling valve 71. The filling valve 71 is equipped with inlet and outlet oil pipes 72 that connect to the hydraulic oil tank 10. The filling valve 71 is a large, dedicated hydraulic control check valve that can quickly replenish a large amount of oil to the oil chamber of the master cylinder 70 to prevent cavitation, and can reliably close the oil circuit when working under high pressure.

[0048] like Figure 4 As shown, the operation process of this hydraulic drive system is as follows:

[0049] The rapid descent port opens, the master cylinder descends rapidly, and the proximity switch senses the signal;

[0050] The slow-speed booster port opens, the master cylinder is pressurized and slowly descends, and the proximity switch senses the signal;

[0051] With the filling valve control port and the rapid return port open, the master cylinder and slave cylinder rapidly return;

[0052] Complete one action cycle.

[0053] The hydraulic drive system that drives the master and slave cylinders only requires a small oil tank and a gas-liquid booster pump; it has low energy consumption and is easy to maintain, significantly reducing operating costs; while traditional hydraulic stations have high energy consumption and high operating and maintenance costs.

[0054] Taking a traditional hydraulic power unit with an output of 60 tons as an example:

[0055] The hydraulic oil in traditional systems typically needs to be changed annually, requiring approximately 200 liters each time. However, this hydraulic drive system does not require annual hydraulic oil changes; the replacement cycle can be extended to 2-3 years, and each replacement only requires about 60 liters of hydraulic oil.

[0056] The motors of traditional hydraulic stations with an output of 60 tons are generally around 10KW, which consumes a lot of energy. In contrast, the energy consumption of this hydraulic drive system is only 0.03 kWh per hour.

[0057] The hydraulic power unit based on gas-liquid boosting provided by this utility model can drive not only the master and slave cylinders, but also other hydraulic actuators, such as hydraulic cylinders that realize other linear motions and hydraulic motors that realize rotary motions.

[0058] In summary, as described in the specification and figures, this utility model has been manufactured into actual samples and subjected to multiple use tests. The test results demonstrate that this utility model achieves its intended purpose, and its practicality is beyond doubt. The embodiments described above are merely for illustrative purposes and are not intended to limit the scope of this utility model. Any equivalent embodiments made by those with common knowledge in the relevant technical field, utilizing the technical content disclosed in this utility model, without departing from the scope of the technical features and similar features disclosed in this utility model, are all within the protection scope of this utility model.

Claims

1. A hydraulic station based on gas-liquid booster, characterized in that: It includes a hydraulic oil tank (10), a pneumatic-hydraulic booster pump (20), a pneumatic power processor (30), a reversing valve (40), and a hydraulic control module (50). The gas-liquid booster pump (20) is provided with an oil suction port (21), an oil outlet (22) and a booster piston (23), and the hydraulic oil tank (10) is unidirectionally connected to the oil suction port (21). The air source processor (30) regulates and filters compressed air, and is connected to the gas-liquid booster pump (20) through the reversing valve (40). The reversing valve (40) controls the compressed air to enter the gas-liquid booster pump (20), so that the booster piston (23) reciprocates to generate high-pressure hydraulic oil, which is output from the oil outlet (22). The hydraulic control module (50) is provided with a high-pressure oil circuit (51) connected to the oil outlet (22), the high-pressure oil circuit (51) is unidirectionally connected to the hydraulic control module (50), and the hydraulic control module (50) is connected to the master cylinder (70).

2. The hydraulic station based on gas-liquid booster according to claim 1, characterized in that, The high-pressure oil circuit (51) is connected to an accumulator (60) to store the high-pressure hydraulic oil output by the gas-liquid booster pump (20).

3. The hydraulic station based on gas-liquid booster according to claim 1, characterized in that, The gas-liquid booster pump (20) includes a front high-pressure pipe (24), a front cover (25), a booster cylinder (26), a rear cover (27), and a rear high-pressure pipe (28) that are sequentially sealed and connected; the inner diameters of the front high-pressure pipe (24) and the rear high-pressure pipe (28) are both smaller than the inner diameter of the booster cylinder (26); The booster piston (23) is located inside the booster cylinder (26) and reciprocates therein. The front high pressure pipe (24) is provided with a front booster rod (29) connected to the booster piston (23), and the rear high pressure pipe (28) is provided with a rear booster rod (2a) connected to the booster piston (23). The front high-pressure pipe (24) and the rear high-pressure pipe (28) are respectively provided with the oil suction port (21) and the oil outlet (22); the front booster rod (29) or the rear booster rod (2a) moves under the drive of the booster piston (23) and draws hydraulic oil from the hydraulic oil tank (10) from the oil suction port (21). After reversing the movement, the hydraulic oil is boosted and output as high-pressure hydraulic oil from the oil outlet (22).

4. The hydraulic station based on gas-liquid booster according to claim 1, characterized in that, The booster piston (23) is provided with a magnetic ring (2b), and the gas-liquid booster pump (20) is provided with a first magnetic switch (2c) and a second magnetic switch (2d) on the outside according to the stroke distance of the booster piston (23). When the booster piston (23) moves to the sensing position of the first magnetic switch (2c) or the second magnetic switch (2d), it sends a signal to the reversing valve (40). The reversing valve (40) changes the air intake position of the gas-liquid booster pump (20) and drives the booster piston (23) to reverse its movement, thereby realizing the reciprocating cycle of the booster piston (23).

5. The hydraulic station based on gas-liquid booster according to claim 1, characterized in that, The reversing valve (40) is a solenoid reversing valve or a pneumatic reversing valve.

6. A hydraulic drive system, characterized in that: Includes the hydraulic station and master cylinder (70) based on gas-liquid boosting as described in any one of claims 1 to 4, wherein the output port of the high-pressure oil circuit (51) is connected to the input port of the master cylinder (70) through the hydraulic control module (50).

7. The hydraulic drive system according to claim 6, characterized in that, It also includes a filling valve (71), through which the hydraulic control module (50) is connected to the input port of the mother and daughter cylinders (70); the filling valve (71) is provided with an inlet and outlet oil pipe (72) that connects to the hydraulic oil tank (10).

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