Active degassing type hydraulic oil radiator

Abstract

The invention relates to an active degassing type hydraulic oil radiator, and belongs to the technical field of hydraulic oil degassing. Comprising an oil inlet header and an oil return header which are distributed up and down, the oil inlet header and the oil return header are connected through a heat exchange device, the left end and the right end of the oil inlet header are provided with an oil inlet connector and an exhaust pipe connector respectively, the left end of the oil return header is provided with an oil return connector, and a degassing mechanism is arranged in the oil inlet header. The degassing mechanism comprises a gas-liquid separation shell, a porous exhaust pipe is fixedly arranged in the gas-liquid separation shell, a spiral rotary baffle plate is fixedly arranged on the outer side of the porous exhaust pipe, the right end of the porous exhaust pipe is connected with an exhaust pipe connector, and a porous medium is arranged on the porous exhaust pipe; the problem that at present, bubbles and high temperature threaten operation of a hydraulic system is solved.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic oil degassing technology, specifically relating to an active degassing hydraulic oil radiator. Background Technology

[0002] Hydraulic transmission technology is widely used in aerospace equipment, industrial equipment, and mobile machinery. The development trend of high reliability, high energy efficiency, high performance, and green technology in transmission systems has placed higher demands on the working medium. Hydraulic oil, as a commonly used working medium in hydraulic transmission, has multiple functions including energy transmission, lubrication, and cooling, directly affecting the operating state of the hydraulic system. Among these, the precipitation of air bubbles caused by changes in the hydraulic oil's flow state, and the rapid rise in oil temperature due to large energy losses and low cooling efficiency, are two important factors causing hydraulic system failures. Simultaneously, increased temperature increases the air separation pressure of the hydraulic oil, making it easier for air bubbles to precipitate; conversely, increased air bubble content in the hydraulic oil reduces the energy efficiency of hydraulic components and systems, causing the hydraulic oil temperature to rise. The interaction between air bubbles and high temperature is mutually detrimental, posing a significant threat to the safe and efficient operation of the hydraulic system. Removing air bubbles from the hydraulic oil can not only reduce the damage to the hydraulic system but also significantly lower the hydraulic oil's thermal equilibrium temperature. Summary of the Invention

[0003] This invention overcomes the shortcomings of the prior art and proposes an active degassing hydraulic oil radiator; solving the problem that air bubbles and high temperatures pose a threat to the operation of hydraulic systems.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution.

[0005] An active degassing hydraulic oil radiator includes an inlet manifold and a return manifold distributed vertically. The inlet manifold and the return manifold are connected by a heat exchange device. The left and right ends of the inlet manifold are respectively provided with an inlet connection port and an exhaust pipe connector. The left end of the return manifold is provided with a return connection port. A degassing mechanism is provided inside the inlet manifold. The degassing mechanism includes a gas-liquid separation shell. A porous exhaust pipe is fixedly installed inside the gas-liquid separation shell. A spiral rotating baffle is fixedly installed on the outside of the porous exhaust pipe. The right end of the porous exhaust pipe is connected to an exhaust pipe connector. A porous medium is provided on the porous exhaust pipe.

[0006] Furthermore, openings are provided at the lower end of the oil inlet header and the upper end of the oil return header. The opening at the lower end of the oil inlet header is connected to the upper end of the heat exchanger, and the opening at the upper end of the oil return header is connected to the lower end of the heat exchanger. An oil inlet diverter plate is fixedly installed at the opening at the lower end of the oil inlet header, and the oil inlet diverter plate is provided with multiple oil inlet diverter holes. An oil return diverter plate is fixedly installed at the opening at the upper end of the oil return header, and the oil return diverter plate is provided with multiple oil return diverter holes.

[0007] Furthermore, the gas-liquid separator housing includes a cylindrical section on the left and a conical section on the right. The cylindrical section is a cylindrical structure with openings at both ends, and the conical section is a conical structure with openings at both ends. The diameter of the left opening of the conical section is larger than the diameter of the right opening. The left opening of the cylindrical section is fixedly connected to the left inner wall of the oil inlet manifold, the right opening of the cylindrical section is fixedly connected to the left opening of the conical section, and the right opening of the conical section is fixedly connected to the right inner wall of the oil inlet manifold. The oil inlet is located inside the left opening of the cylindrical section.

[0008] Furthermore, a groove is provided at the right end opening of the conical section.

[0009] Furthermore, the porous exhaust pipe is a cylindrical structure that is closed at the left end and open at the right end. The right end of the porous exhaust pipe passes through the right end opening of the conical section of the gas-liquid separation shell and the right side wall of the gas-liquid separation shell and extends into the interior of the exhaust pipe connector.

[0010] Furthermore, the porous exhaust pipe consists of three sections: left, middle, and right. The left and right sections are closed sections made of hollow conduits, and the middle section is an exhaust section made of the porous medium. The two ends of the middle exhaust section are located inside the cylindrical and conical sections of the gas-liquid separation shell, respectively.

[0011] Furthermore, the rotating baffle is located inside the cylindrical section of the gas-liquid separation shell, and the inner edge of the rotating baffle is fixedly connected to the outer side of the porous exhaust pipe, while the outer edge of the rotating baffle is fixedly connected to the inner side of the cylindrical section of the gas-liquid separation shell.

[0012] Furthermore, an inclined baffle plate is fixedly installed on the lower right side inside the oil inlet header. The left end of the inclined baffle plate is inclined downward, and the right end of the inclined baffle plate is fixedly connected to the inner wall of the right side of the oil inlet header. Multiple diversion holes are provided on the inclined baffle plate.

[0013] Furthermore, the heat exchange device is a plate-fin heat exchanger, which includes a heat exchange shell. The heat exchange shell has an inner flow channel and an outer flow channel. The inner flow channel is a hydraulic oil flow channel, and the outer flow channel is an air flow channel. Inner fins are installed on the inner flow channel of the heat exchange shell, and outer fins are installed on the outer flow channel of the heat exchange shell.

[0014] Furthermore, the heat exchange device adopts a plate heat exchanger or a tube heat exchanger.

[0015] The beneficial effects of this invention compared to the prior art are as follows: In an active degassing oil cooler, air bubbles in the hydraulic oil are removed by a degassing mechanism to increase the heat flux density of the hydraulic oil. Inclined baffles are used to increase the turbulence of the hydraulic oil and reduce the thermal resistance caused by air bubbles in the heat exchange channel, thereby improving the cooling efficiency of the oil cooler, the largest heat dissipation element in the hydraulic system. At the same time, eliminating air bubbles in the hydraulic oil can also improve the energy efficiency of hydraulic components and the system, thereby reducing heat generation. By improving cooling efficiency and reducing heat generation efficiency, the thermal equilibrium temperature of the hydraulic system is reduced in a comprehensive manner.

[0016] The degassing mechanism consists of a gas-liquid separation shell, a rotating baffle plate, and a porous exhaust pipe. Without adding an additional power unit, it fully utilizes the pressure and kinetic energy inherent in the hydraulic oil itself. Guided by the rotating baffle plate, the hydraulic oil undergoes a high-speed spiral motion, generating centrifugal force that rapidly separates air bubbles with large density differences from the hydraulic oil. Simultaneously, a porous exhaust pipe made of porous foam metal is located at the center of the degassing mechanism. The porous medium's adsorption of air bubbles and the inward squeezing force generated by the conical surface of the gas-liquid separation shell further accelerate gas-liquid separation, achieving efficient degassing of the hydraulic oil. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure between the oil inlet header and the degassing mechanism; Figure 3 This is a schematic diagram of the degassing mechanism. Figure 4 This is a schematic diagram of the operation of a multi-hole exhaust pipe; Among them, 1 is the oil inlet connection port, 2 is the oil inlet manifold, 3 is the degassing mechanism, 4 is the exhaust pipe connector, 5 is the inclined baffle plate, 6 is the oil inlet diversion plate, 7 is the heat exchange shell, 8 is the inner fin, 9 is the outer fin, 10 is the return oil diversion plate, 11 is the return oil manifold, 12 is the return oil connection port, 13 is the rotating baffle plate, 14 is the multi-hole exhaust pipe, 15 is the gas-liquid separation shell, 16 is the hydraulic oil, 17 is the small bubble, 18 is the hydraulic oil flow direction, 19 is the agglomerated bubble, 20 is the gas-containing hydraulic oil, 21 is the agglomerated large bubble, 22 is the exhaust section, 23 is the degassed hydraulic oil, and 24 is the closed section. Detailed Implementation

[0018] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solutions of this invention are described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0019] like Figure 1 As shown in Figure 4, this invention provides an active degassing hydraulic oil radiator, including an oil inlet manifold 2 and an oil return manifold 11 distributed vertically. The oil inlet manifold 2 and the oil return manifold 11 are connected by a heat exchange device. The left and right ends of the oil inlet manifold 2 are respectively provided with an oil inlet connection port 1 and an exhaust pipe connector 4. The left end of the oil return manifold 11 is provided with an oil return connection port 12. A degassing mechanism 3 is provided inside the oil inlet manifold 2. The degassing mechanism 3 includes a gas-liquid separation shell 15. A porous exhaust pipe 14 is fixedly provided inside the gas-liquid separation shell 15. A spiral rotating baffle 13 is fixedly provided on the outside of the porous exhaust pipe 14. The right end of the porous exhaust pipe 14 is connected to the exhaust pipe connector 4. A porous medium is provided on the porous exhaust pipe 14.

[0020] Both the inlet manifold 2 and the return manifold 11 are horizontally arranged cylindrical structures, and their axes are horizontal. Both the inlet port 1 and the return port 12 are cylindrical structures with openings at both ends. The inlet port 1 is connected to the inside of the inlet manifold 2, and the return port 12 is connected to the inside of the return manifold 11.

[0021] Openings are provided at the lower end of the inlet manifold 2 and the upper end of the return manifold 11. The lower opening of the inlet manifold 2 is connected to the upper end of the heat exchanger, and the upper opening of the return manifold 11 is connected to the lower end of the heat exchanger. An inlet diverter plate 6 is fixedly installed at the lower opening of the inlet manifold 2. The inlet diverter plate 6 has multiple inlet diverter holes. The hydraulic oil 16 inside the inlet manifold 2 flows into the heat exchanger through the inlet diverter holes on the inlet diverter plate 6 for heat exchange. A return diverter plate 10 is fixedly installed at the upper opening of the return manifold 11. The return diverter plate 10 has multiple return diverter holes. The hydraulic oil 16 after heat exchange in the heat exchanger flows into the return manifold 11 through the multiple return diverter holes on the return diverter plate 10.

[0022] The gas-liquid separator housing 15 includes a cylindrical section on the left and a conical section on the right. The cylindrical section is a cylindrical structure with openings at both ends, and the conical section is a conical structure with openings at both ends. The diameter of the left opening of the conical section is larger than the diameter of the right opening. The axes of the cylindrical and conical sections are aligned and both are horizontally arranged in the left-right direction. The left opening of the cylindrical section is fixedly connected to the left inner wall of the oil inlet manifold 2, the right opening of the cylindrical section is fixedly connected to the left opening of the conical section, and the right opening of the conical section is fixedly connected to the right inner wall of the oil inlet manifold 2. The oil inlet port 1 is located inside the left opening of the cylindrical section, and the hydraulic oil 16 entering through the oil inlet port 1 directly enters the gas-liquid separator housing 15. A groove is provided at the right opening of the conical section, through which the hydraulic oil 16 inside the gas-liquid separator housing 15 flows into the oil inlet manifold 2.

[0023] The porous exhaust pipe 14 is a cylindrical structure closed at the left end and open at the right end. The axis of the porous exhaust pipe 14 remains horizontal and coincides with the axis of the gas-liquid separator 15. The left end of the porous exhaust pipe 14 is located at the left end opening of the cylindrical section of the gas-liquid separator 15, and the right end of the porous exhaust pipe 14 passes through the right end opening of the conical section of the gas-liquid separator 15 and the right side wall of the gas-liquid separator 15 before extending into the exhaust pipe connector 4. The exhaust pipe connector 4 is used to connect the exhaust pipeline, which is connected to the upper end of the fuel tank. The porous exhaust pipe 14 consists of three sections: left, middle, and right. The left and right sections are closed sections 24 made of hollow conduits, and the middle section is an exhaust section 22 made of porous foam-like metal. The two ends of the middle exhaust section 22 are located inside the cylindrical and conical sections of the gas-liquid separator 15, respectively.

[0024] The rotating baffle 13 is located inside the cylindrical section of the gas-liquid separation shell 15. The inner edge of the rotating baffle 13 is fixedly connected to the outer side of the porous exhaust pipe 14, and the outer edge of the rotating baffle 13 is fixedly connected to the inner side of the cylindrical section of the gas-liquid separation shell 15.

[0025] An inclined baffle plate 5 is fixedly installed on the lower right side inside the oil inlet manifold 2. The left end of the inclined baffle plate 5 is inclined downward, and the right end of the inclined baffle plate 5 is fixedly connected to the inner right wall of the oil inlet manifold 2. Multiple diversion holes are provided on the inclined baffle plate 5, and the diversion holes are triangular holes. The right end of the inclined baffle plate 5 is located below the opening groove at the right end of the conical section of the gas-liquid separator shell 15.

[0026] The heat exchange device is a plate-fin heat exchanger, comprising a heat exchange shell 7. The heat exchange shell 7 has an inner flow channel and an outer flow channel. The inner flow channel is a hydraulic oil flow channel, and the outer flow channel is an air flow channel. Inner fins 8 are installed on the inner flow channel of the heat exchange shell 7, and outer fins 9 are installed on the outer flow channel of the heat exchange shell 7. The heat exchange device can also be a plate heat exchanger or a tube heat exchanger.

[0027] The working principle of this invention is as follows: Hydraulic oil 16 enters the cylindrical section of the gas-liquid separator housing 15 through the inlet port 1. Without adding an additional power unit, the hydraulic oil 16 fully utilizes its own pressure and kinetic energy. Guided by the rotating baffle 13, the hydraulic oil flows in a high-speed spiral direction 18. The resulting centrifugal force separates the air bubbles with large density differences from the hydraulic oil 16. After passing through the rotating baffle 13, the hydraulic oil 16 enters the conical section of the gas-liquid separator housing 15. The inner cone surface of the conical section squeezes the hydraulic oil 16, and the high porosity of the porous foam-like metal surface accelerates the bubble separation speed. This rapidly separates the small air bubbles 17 inside the hydraulic oil 16. Some of the separated small air bubbles 17 form aggregated bubbles 19 on the outside of the exhaust section 22 of the porous exhaust pipe 14, while the other part of the small air bubbles 17 remain in the small air bubble state. Utilizing the adsorption of bubbles by the porous medium and the inward compressive force formed by the conical surface of the conical section of the gas-liquid separation shell 15, small bubbles 17 on the outside of the exhaust section 22 of the porous exhaust pipe 14, as well as the aggregated bubbles 19, pass through the porous medium of the exhaust section 22 and enter the interior of the porous exhaust pipe 14. The small bubbles 17 entering the interior of the porous exhaust pipe 14 gradually aggregate into aggregated large bubbles 21, which are then output outward along the porous exhaust pipe 14 and transported to the interior of the oil tank through the exhaust pipeline.

[0028] After gas-liquid separation by the degassing mechanism 3, the gas-containing hydraulic oil 20 is converted into degassed hydraulic oil 23. The degassed hydraulic oil 23 flows from the opening slot at the right end of the conical section of the gas-liquid separator housing 15 into the inclined baffle plate 5 inside the oil inlet manifold 2. The inclined baffle plate 5 increases the turbulence of the hydraulic oil 16 and reduces the thermal resistance formed by air bubbles in the heat exchange channel, thereby improving the cooling efficiency of the oil cooler, the largest heat dissipation element in the hydraulic system. At the same time, the diversion holes on the inclined baffle plate 5 can divert a portion of the hydraulic oil 16 to the right side of the oil inlet diversion plate 6, so that the hydraulic oil 16 can be evenly distributed on the oil inlet diversion plate 6.

[0029] The inlet diversion holes of the oil inlet diversion plate 6 correspond to and are the same size as the inner flow channels of the heat exchanger, thereby distributing and isolating the hydraulic oil 16. This allows the hydraulic oil 16 to enter the hydraulic oil flow channels inside the heat exchanger, where air and hydraulic oil 16 exchange heat, thus lowering the temperature of the hydraulic oil 16. The inner fins 8 and outer fins 9 inside the heat exchanger increase the turbulence of the fluid flow and the heat dissipation area. After being cooled by the heat exchanger, the hydraulic oil 16 enters the return oil manifold 11 and is finally output through the return oil connection port 12.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An active degassing hydraulic oil radiator, characterized in that: It includes an oil inlet manifold (2) and an oil return manifold (11) distributed vertically. The oil inlet manifold (2) and the oil return manifold (11) are connected by a heat exchange device. The oil inlet manifold (2) is provided with an oil inlet connection port (1) and an exhaust pipe connector (4) at its left and right ends, respectively. The oil return manifold (11) is provided with an oil return connection port (12) at its left end. A degassing mechanism (3) is provided inside the oil inlet manifold (2). The degassing mechanism (3) includes a gas-liquid separation shell (15). A porous exhaust pipe (14) is fixedly provided inside the gas-liquid separation shell (15). A spiral rotating baffle (13) is fixedly provided on the outside of the porous exhaust pipe (14). The right end of the porous exhaust pipe (14) is connected to the exhaust pipe connector (4). A porous medium is provided on the porous exhaust pipe (14).

2. The active degassing hydraulic oil radiator according to claim 1, characterized in that: An opening is provided at the lower end of the oil inlet header (2) and the upper end of the oil return header (11). The opening at the lower end of the oil inlet header (2) is connected to the upper end of the heat exchange device, and the opening at the upper end of the oil return header (11) is connected to the lower end of the heat exchange device. An oil inlet diversion plate (6) is fixedly provided at the opening at the lower end of the oil inlet header (2), and multiple oil inlet diversion holes are provided on the oil inlet diversion plate (6). An oil return diversion plate (10) is fixedly provided at the opening at the upper end of the oil return header (11), and multiple oil return diversion holes are provided on the oil return diversion plate (10).

3. The active degassing hydraulic oil radiator according to claim 1, characterized in that: The gas-liquid separator housing (15) includes a cylindrical section on the left and a conical section on the right. The cylindrical section is a cylindrical structure with openings at both ends on the left and right. The conical section is a conical structure with openings at both ends on the left and right. The diameter of the opening at the left end of the conical section is larger than the diameter of the opening at the right end. The opening at the left end of the cylindrical section is fixedly connected to the inner wall of the left side of the oil inlet manifold (2). The opening at the right end of the cylindrical section is fixedly connected to the opening at the left end of the conical section. The opening at the right end of the conical section is fixedly connected to the inner wall of the right side of the oil inlet manifold (2). The oil inlet connection port (1) is located inside the opening at the left side of the cylindrical section.

4. The active degassing hydraulic oil radiator according to claim 3, characterized in that: An opening groove is provided at the right end of the conical section.

5. The active degassing hydraulic oil radiator according to claim 3, characterized in that: The porous exhaust pipe (14) is a cylindrical structure with a closed left end and an open right end. The right end of the porous exhaust pipe (14) passes through the right end opening of the conical section of the gas-liquid separation shell (15) and the right side wall of the gas-liquid separation shell (15) and extends into the interior of the exhaust pipe connector (4).

6. The active degassing hydraulic oil radiator according to claim 5, characterized in that: The porous exhaust pipe (14) consists of three sections: left, middle and right. The left and right sections are closed sections (24) made of hollow conduits, and the middle section is an exhaust section (22) made of the porous medium. The two ends of the middle exhaust section (22) are located inside the cylindrical section and the conical section of the gas-liquid separation shell (15), respectively.

7. The active degassing hydraulic oil radiator according to claim 3, characterized in that: The rotating baffle (13) is located inside the cylindrical section of the gas-liquid separation shell (15). The inner edge of the rotating baffle (13) is fixedly connected to the outer side of the porous exhaust pipe (14), and the outer edge of the rotating baffle (13) is fixedly connected to the inner side of the cylindrical section of the gas-liquid separation shell (15).

8. The active degassing hydraulic oil radiator according to claim 4, characterized in that: An inclined baffle plate (5) is fixedly installed on the lower right side inside the oil inlet manifold (2). The left end of the inclined baffle plate (5) is inclined downward, and the right end of the inclined baffle plate (5) is fixedly connected to the inner wall of the right side of the oil inlet manifold (2). Multiple diversion holes are provided on the inclined baffle plate (5).

9. The active degassing hydraulic oil radiator according to claim 1, characterized in that: The heat exchange device is a plate-fin heat exchanger. The heat exchange device includes a heat exchange shell (7). The heat exchange shell (7) is provided with an inner flow channel and an outer flow channel. The inner flow channel is a hydraulic oil flow channel and the outer flow channel is an air flow channel. Inner fins (8) are installed on the inner flow channel of the heat exchange shell (7) and outer fins (9) are installed on the outer flow channel of the heat exchange shell (7).

10. The active degassing hydraulic oil radiator according to claim 1, characterized in that: The heat exchange device is a plate heat exchanger or a tubular heat exchanger.

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