Hydraulic oil cooling device for hydraulic equipment

Abstract

The utility model provides a hydraulic oil cooling device for hydraulic equipment. The hydraulic oil cooling device comprises a heat exchanger, a cooling system, a hydraulic oil tank, an oil pump and a flow divider, the two connecting ends of the cooling system are connected with a first inlet and a first outlet of the heat exchanger respectively, an oil inlet of the hydraulic oil tank is connected with a second outlet of the heat exchanger through an oil return pipe, an oil outlet of the hydraulic oil tank is connected with an oil inlet of the flow divider through an oil supply pipe, and the oil pump is connected to the oil supply pipe. Each oil outlet of the flow divider is connected with one oil inlet of the to-be-cooled equipment through a connecting pipe, and the oil outlet of the to-be-cooled equipment is connected with a second inlet of the heat exchanger through an oil outlet pipe; the hydraulic oil cooling device further comprises a pressure regulating valve and an energy accumulator, the pressure regulating valve is connected to the portion, between the oil pump and the flow divider, of the oil supply pipe, and the connecting end of the energy accumulator is connected with the portion, between the oil pump and the pressure regulating valve, of the oil supply pipe. When the cooling device is used, after the oil pump is shut down, equipment to be cooled can be continuously cooled for a period of time.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cooling devices, in particular to a hydraulic oil cooling device for hydraulic equipment. Background Art

[0002] When hydraulic equipment is working, the hydraulic oil will produce a certain temperature rise phenomenon. In order to achieve cooling of the hydraulic oil, a hydraulic oil cooling device for hydraulic equipment has appeared on the market. The hydraulic oil cooling device for hydraulic equipment includes a heat exchanger, a cooling system, a hydraulic oil tank, an oil pump and a diverter; the two connecting ends of the cooling system are respectively connected to the first inlet and the first outlet of the heat exchanger, the oil inlet of the hydraulic oil tank is connected to the second outlet of the heat exchanger through an oil return pipe, the oil outlet of the hydraulic oil tank is connected to the oil inlet of the diverter through an oil supply pipe, the oil pump is connected to the oil supply pipe, each oil outlet of the diverter is connected to one of the oil inlets of the device to be cooled through a connecting pipe, and the oil outlet of the device to be cooled is connected to the second inlet of the heat exchanger through the oil outlet pipe. When the oil cooling device is working, the cooling system can cool the hydraulic oil flowing through the heat exchanger, and the hydraulic oil cooled by the heat exchanger can return to the hydraulic oil tank. The cooled hydraulic oil in the hydraulic oil tank can be transported to the equipment to be cooled through the oil pump and the diverter. At this time, the hydraulic oil can cool the equipment to be cooled, and the hydraulic oil cooled by the equipment to be cooled can be transported to the heat exchanger again for cooling. Through the above process, the cooling system and the heat exchanger can continuously cool the hydraulic oil, and the hydraulic oil can continuously cool the equipment to be cooled. However, in the above-mentioned hydraulic oil cooling device for hydraulic equipment, when the oil pump is shut down, the oil pump will immediately stop supplying hydraulic oil to the equipment to be cooled, which may easily cause thermal damage to the equipment to be cooled due to residual heat. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a hydraulic oil cooling device for hydraulic equipment. When in use, after the oil pump is shut down, the hydraulic oil stored in the accumulator can continuously release the hydraulic oil for a period of time, so that the equipment to be cooled can be continuously cooled for a period of time to avoid thermal damage to the equipment to be cooled due to residual heat.

[0004] The utility model provides a hydraulic oil cooling device for hydraulic equipment, comprising a heat exchanger, a cooling system, a hydraulic oil tank, an oil pump and a flow divider; two connecting ends of the cooling system are respectively connected to a first inlet and a first outlet of the heat exchanger, an oil inlet of the hydraulic oil tank is connected to a second outlet of the heat exchanger through an oil return pipe, an oil outlet of the hydraulic oil tank is connected to an oil inlet of the flow divider through an oil supply pipe, an oil pump is connected to the oil supply pipe, each oil outlet of the flow divider is connected to one of the oil inlets of a device to be cooled through a connecting pipe, and an oil outlet of the device to be cooled is connected to the second inlet of the heat exchanger through the oil outlet pipe; the hydraulic oil cooling device also comprises a pressure regulating valve and an accumulator, the pressure regulating valve is connected to the oil supply pipe between the oil pump and the flow divider, and a connecting end of the accumulator is connected to the oil supply pipe between the oil pump and the pressure regulating valve.

[0005] When the utility model is in use, after the oil pump is shut down, the hydraulic oil stored in the accumulator can continuously release the hydraulic oil for a period of time, so that the device to be cooled can be continuously cooled for a period of time, so as to avoid thermal damage to the device to be cooled due to residual heat.

[0006] In a possible embodiment, the hydraulic oil cooling device also includes a one-way valve, which is connected to the oil supply pipe between the oil pump and the accumulator; through the setting of the one-way valve, when the oil pump stops working and when the accumulator releases the hydraulic oil, the one-way valve can effectively prevent the hydraulic oil from flowing back into the hydraulic oil tank through the oil pump, that is, it can ensure that the hydraulic oil released by the accumulator reliably enters the equipment to be cooled through the diverter and continuously cools the equipment to be cooled for a period of time.

[0007] In a possible embodiment, the hydraulic oil cooling device also includes a pressure gauge, and the connecting end of the pressure gauge is connected to the oil supply pipe located between the pressure regulating valve and the diverter; through the setting of the pressure gauge, the pressure gauge can display the hydraulic oil pressure in the oil supply pipe located between the pressure regulating valve and the diverter in real time, thereby bringing convenience to the staff.

[0008] In a possible embodiment, the hydraulic oil cooling device also includes an oil filter, which is connected to the oil supply pipe between the hydraulic oil tank and the oil pump; through the setting of the oil filter, the oil filter can filter impurities in the hydraulic oil from the hydraulic oil tank, thereby preventing impurities from entering the oil pump, that is, effectively avoiding wear of the oil pump.

[0009] In one possible implementation, a heating device and a temperature sensor are installed in the hydraulic oil tank, and both the heating device and the temperature sensor are electrically connected to the thermostat; by adopting this structure, in winter, if the temperature of the hydraulic oil in the hydraulic oil tank is too low, the heating device can be turned on by the thermostat to heat the hydraulic oil in the hydraulic oil tank, that is, the hydraulic oil can be heated to a suitable temperature, and under the action of the temperature sensor and the thermostat, the heating device can intermittently heat the hydraulic oil in the hydraulic oil tank to control the temperature of the hydraulic oil in the hydraulic oil tank within a suitable range; in addition, when the heating device heats the hydraulic oil in the hydraulic oil tank, the cooling system is in a stopped state. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0011] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0012] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0013] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0014] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] See also Figure 1As shown, the embodiment of the present application discloses a hydraulic oil cooling device for hydraulic equipment, including a heat exchanger 1, a cooling system 2, a hydraulic oil tank 3, an oil pump 4 and a diverter 5; the two connecting ends of the cooling system 2 are respectively connected to the first inlet and the first outlet of the heat exchanger 1, the oil inlet of the hydraulic oil tank 3 is connected to the second outlet of the heat exchanger 1 through an oil return pipe 6, the oil outlet of the hydraulic oil tank 3 is connected to the oil inlet of the diverter 5 through an oil supply pipe 7, the oil pump 4 is connected to the oil supply pipe 7, and each outlet of the diverter 5 is connected to the oil supply pipe 7. The oil ports are connected to one of the oil inlets of the equipment to be cooled 9 through a connecting pipe 8, and the oil outlet of the equipment to be cooled 9 is connected to the second inlet of the heat exchanger 1 through an oil outlet pipe 10; the hydraulic oil cooling device also includes a pressure regulating valve 11 and an accumulator 12, the pressure regulating valve 11 is connected to the oil supply pipe 7 between the oil pump 4 and the diverter 5, and the connecting end of the accumulator 12 is connected to the oil supply pipe 7 between the oil pump 4 and the pressure regulating valve 11; the above-mentioned cooling system is an air-conditioning unit, which is a prior art and will not be described here.

[0016] When the utility model is in use, after the oil pump is shut down, the hydraulic oil stored in the accumulator can continuously release the hydraulic oil for a period of time, so that the equipment to be cooled can be continuously cooled for a period of time (generally 3-5 minutes) to avoid thermal damage to the equipment to be cooled due to residual heat.

[0017] The hydraulic oil cooling device also includes a one-way valve 13, which is connected to the oil supply pipe 7 between the oil pump 4 and the accumulator 12. Through the setting of the one-way valve, when the oil pump stops working and when the accumulator releases the hydraulic oil, the one-way valve can effectively prevent the hydraulic oil from flowing back into the hydraulic oil tank through the oil pump, that is, it can ensure that the hydraulic oil released by the accumulator reliably enters the equipment to be cooled through the diverter and continuously cools the equipment to be cooled for a period of time.

[0018] The hydraulic oil cooling device also includes a pressure gauge 14, the connection end of the pressure gauge 14 is connected to the oil supply pipe 7 located between the pressure regulating valve 11 and the diverter 5; through the setting of the pressure gauge, the pressure gauge can display the hydraulic oil pressure in the oil supply pipe between the pressure regulating valve and the diverter in real time, thereby bringing convenience to the staff.

[0019] The hydraulic oil cooling device also includes an oil filter 15, which is connected to the oil supply pipe 7 between the hydraulic oil tank 3 and the oil pump 4. Through the setting of the oil filter, the oil filter can filter impurities in the hydraulic oil from the hydraulic oil tank, thereby preventing impurities from entering the oil pump, that is, effectively avoiding wear of the oil pump.

[0020] A heating device and a temperature sensor are installed in the hydraulic oil tank 3, and both the heating device and the temperature sensor are electrically connected to the thermostat. By adopting this structure, in winter, if the temperature of the hydraulic oil in the hydraulic oil tank is too low, the heating device can be turned on by the thermostat to heat the hydraulic oil in the hydraulic oil tank, that is, the hydraulic oil can be heated to a suitable temperature, and under the action of the temperature sensor and the thermostat, the heating device can intermittently heat the hydraulic oil in the hydraulic oil tank to control the temperature of the hydraulic oil in the hydraulic oil tank within a suitable range. In addition, when the heating device heats the hydraulic oil in the hydraulic oil tank, the cooling system is in a stopped state.

[0021] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A hydraulic oil cooling device for hydraulic equipment, comprising a heat exchanger (1), a cooling system (2), a hydraulic oil tank (3), an oil pump (4) and a flow divider (5); the two connecting ends of the cooling system (2) are respectively connected to the first inlet and the first outlet of the heat exchanger (1); the oil inlet of the hydraulic oil tank (3) is connected to the second outlet of the heat exchanger (1) through an oil return pipe (6); the oil outlet of the hydraulic oil tank (3) is connected to the oil inlet of the flow divider (5) through an oil supply pipe (7); the oil pump (4) is connected to the oil supply pipe (7); each oil outlet of the flow divider (5) is connected to one of the oil inlets of a device to be cooled (9) through a connecting pipe (8); the oil outlet of the device to be cooled (9) is connected to the second inlet of the heat exchanger (1) through an oil outlet pipe (10); characterized in that: The hydraulic oil cooling device further comprises a pressure regulating valve (11) and an accumulator (12); the pressure regulating valve (11) is connected to the oil supply pipe (7) between the oil pump (4) and the flow divider (5); and the connecting end of the accumulator (12) is connected to the oil supply pipe (7) between the oil pump (4) and the pressure regulating valve (11).

2. The hydraulic oil cooling device for hydraulic equipment according to claim 1, characterized in that: The hydraulic oil cooling device also includes a one-way valve (13), and the one-way valve (13) is connected to the oil supply pipe (7) between the oil pump (4) and the accumulator (12).

3. The hydraulic oil cooling device for hydraulic equipment according to claim 1 or 2, characterized in that: The hydraulic oil cooling device also includes a pressure gauge (14), the connection end of the pressure gauge (14) being connected to an oil supply pipe (7) located between the pressure regulating valve (11) and the flow divider (5).

4. The hydraulic oil cooling device for hydraulic equipment according to claim 3, characterized in that: The hydraulic oil cooling device also includes an oil filter (15), and the oil filter (15) is connected to an oil supply pipe (7) located between the hydraulic oil tank (3) and the oil pump (4).

5. The hydraulic oil cooling device for hydraulic equipment according to claim 1, 2 or 4, characterized in that: A heating device and a temperature sensor are installed in the hydraulic oil tank (3), and both the heating device and the temperature sensor are electrically connected to the temperature controller.

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