Hydraulic oil heat dissipation device and hydraulic equipment

Abstract

The utility model relates to a hydraulic oil heat dissipation device and hydraulic equipment, and the hydraulic oil heat dissipation device comprises a hydraulic oil tank (1) which is provided with an oil storage cavity (11); the cooling loop (2) comprises a first pipeline (21) and a second pipeline (22), the first pipeline (21) is arranged in the oil storage cavity (11) in a penetrating mode, the second pipeline (22) is arranged outside the hydraulic oil tank (1), the first pipeline (21) is provided with a flow channel for cooling liquid to flow, and the flow channel is separated from the oil storage cavity (11); the radiator (3) is communicated with the second pipeline (22); and the pumping structure (4) is communicated with the second pipeline (22) and is arranged to enable the cooling liquid in the cooling loop (2) to flow along a preset direction. The hydraulic oil heat dissipation device can guarantee normal calling of hydraulic oil in the hydraulic oil tank (1).

Description

Technical Field

[0001] The present disclosure relates to the technical field of hydraulic oil heat dissipation, and in particular to a hydraulic oil heat dissipation device and a hydraulic equipment. Background Art

[0002] For hydraulic equipment such as construction machinery, the current construction machinery generally uses hydraulic systems for driving and control, and a good heat dissipation system is a necessary condition to ensure the normal operation of construction machinery. Among them, the hydraulic system converts hydraulic energy into mechanical energy during operation, which will generate a lot of heat. Therefore, a heat dissipation system is needed to dissipate the hydraulic oil in time.

[0003] In the related art, the current heat dissipation system generally includes a radiator, and the hydraulic oil is introduced into the radiator through a designed pipeline, and the hydraulic oil flows back to the hydraulic oil tank after being radiated by the radiator. However, the disadvantage of this method is that when the radiator fails, the hydraulic oil in the radiator cannot flow back to the hydraulic oil tank normally, thereby affecting the normal use of the hydraulic oil in the hydraulic oil tank and affecting the normal operation of the hydraulic system. Utility Model Content

[0004] The purpose of the present disclosure is to provide a hydraulic oil heat dissipation device, which can ensure the normal use of hydraulic oil in a hydraulic oil tank.

[0005] In order to achieve the above object, the present disclosure provides a hydraulic oil heat dissipation device, comprising:

[0006] A hydraulic oil tank having an oil storage chamber;

[0007] A cooling circuit, comprising a first pipeline passing through the oil storage chamber and a second pipeline arranged outside the hydraulic oil tank, wherein the first pipeline has a flow channel for the flow of coolant, and the flow channel is separated from the oil storage chamber;

[0008] a radiator, connected to the second pipeline; and

[0009] The pumping structure is connected to the second pipeline and is configured to make the coolant in the cooling circuit flow along a preset direction.

[0010] Optionally, at least one fan is provided on the radiator.

[0011] Optionally, the first pipeline is arranged through the bottom of the oil storage cavity.

[0012] Optionally, the second pipeline includes a liquid outlet pipe and a liquid return pipe, the liquid outlet pipe is connected upstream of the first pipeline, the liquid return pipe is connected downstream of the first pipeline, the radiator is connected between the liquid outlet pipe and the liquid return pipe, and the pumping structure is connected to the liquid outlet pipe.

[0013] Optionally, the hydraulic oil heat dissipation device includes a liquid storage tank, a liquid replenishing pipe is connected between the liquid storage tank and the liquid outlet pipe, and a liquid draining pipe is connected between the liquid storage tank and the liquid return pipe.

[0014] Optionally, a first one-way valve is connected between the infusion pipe and the outlet pipe, and the first one-way valve is used to limit the coolant in the outlet pipe from flowing into the infusion pipe; a second one-way valve is connected between the discharge pipe and the return pipe, and the second one-way valve is used to limit the coolant in the discharge pipe from flowing into the return pipe.

[0015] Optionally, the hydraulic oil heat dissipation device includes at least two cooling circuits arranged in parallel, and the liquid outlet pipe in each cooling circuit is connected to the pumping structure.

[0016] Optionally, the liquid outlet pipes in at least two cooling circuits are both connected to the first one-way valve, and the liquid return pipes in at least two cooling circuits are both connected to the second one-way valve.

[0017] Optionally, the hydraulic oil cooling device includes a controller and a temperature sensor arranged in the oil storage chamber, the temperature sensor and the pumping structure are electrically connected to the controller, and the controller is used to control the rotation speed of the pumping structure according to the temperature sensor, and / or control the start and stop of the pumping structure.

[0018] According to a second aspect of the present disclosure, there is provided a hydraulic device comprising the hydraulic oil heat dissipation device as described above.

[0019] Through the above technical solution, in the hydraulic oil heat dissipation device provided by the present invention, when it is necessary to dissipate the heat of the hydraulic oil in the hydraulic oil tank, the pumping structure can drive the coolant to circulate in the cooling circuit. Specifically, when the coolant flows through the first pipeline, it can exchange heat with the hydraulic oil to achieve heat dissipation of the hydraulic oil. Then, the coolant can cool itself when flowing through the radiator, so that the coolant can circulate and dissipate the heat of the hydraulic oil. Here, since the flow channel in the first pipeline is separated from the oil storage chamber, that is, the first pipeline and the oil storage chamber are not connected to each other, the hydraulic oil does not flow into the cooling circuit. The advantage of such a setting is that the hydraulic oil does not flow through the radiator. Therefore, even if the radiator fails, it will not affect the normal flow of the hydraulic oil into or out of the hydraulic oil tank, that is, the hydraulic oil heat dissipation device of the present invention can ensure the normal use of the hydraulic oil in the hydraulic oil tank.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of a hydraulic oil heat dissipation device provided according to an embodiment of the present disclosure;

[0023] Figure 2 It is a schematic diagram of the coordination between the cooling circuit and the hydraulic oil tank in the hydraulic oil heat dissipation device provided according to an embodiment of the present disclosure;

[0024] Figure 3 It is a simplified schematic diagram of a hydraulic oil cooling device provided according to an embodiment of the present disclosure.

[0025] Description of Reference Numerals

[0026] 1-hydraulic oil tank, 11-oil storage chamber, 2-cooling circuit, 21-first pipeline, 22-second pipeline, 221-liquid outlet pipe, 222-liquid return pipe, 3-radiator, 4-pumping structure, 5-fan, 61-liquid storage tank, 62-liquid replenishing pipe, 63-liquid drain pipe, 71-first one-way valve, 72-second one-way valve, 8-temperature sensor, 9-controller. DETAILED DESCRIPTION

[0027] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0028] In the present disclosure, unless otherwise stated, the directional words used, such as "top" and "bottom", are defined based on the direction of gravity of each component. "Inside" and "outside" refer to the inside and outside of the contour of each component itself. The terms "first" and "second" are used to distinguish one element from another, and do not have order or importance. In addition, when the following description refers to the drawings, the same reference numerals in different drawings represent the same or similar elements, and this disclosure will not repeat them.

[0029] According to an exemplary embodiment of the present disclosure, a hydraulic oil heat dissipation device is provided, referring to Figures 1 to 3 As shown in the figure, the hydraulic oil heat dissipation device includes: a hydraulic oil tank 1, having an oil storage chamber 11; a cooling circuit 2, including a first pipeline 21 penetrating the oil storage chamber 11 and a second pipeline 22 arranged outside the hydraulic oil tank 1, the first pipeline 21 has a flow channel for the flow of coolant, and the flow channel is separated from the oil storage chamber 11; a radiator 3, connected to the second pipeline 22; and a pumping structure 4, connected to the second pipeline 22, and configured to make the coolant in the cooling circuit 2 flow along a preset direction.

[0030] Through the above technical solution, in the hydraulic oil heat dissipation device provided by the present disclosure, when it is necessary to dissipate the heat of the hydraulic oil in the hydraulic oil tank 1, the pumping structure 4 can drive the coolant to circulate in the cooling circuit 2. Specifically, when the coolant flows through the first pipeline 21, it can exchange heat with the hydraulic oil to achieve heat dissipation of the hydraulic oil. Then, the coolant can cool itself when flowing through the radiator 3, so that the coolant can circulate and dissipate the heat of the hydraulic oil. Here, since the flow channel in the first pipeline 21 is separated from the oil storage chamber 11, that is, the first pipeline 21 and the oil storage chamber 11 are not connected to each other, the hydraulic oil does not flow into the cooling circuit 2. The advantage of such a setting is that the hydraulic oil does not flow through the radiator 3. Therefore, even if the radiator 3 fails, it will not affect the normal flow of the hydraulic oil into or out of the hydraulic oil tank 1, that is, the hydraulic oil heat dissipation device of the present disclosure can ensure the normal use of the hydraulic oil in the hydraulic oil tank 1. In addition, the hydraulic oil cooling device disclosed in the present invention can not only cool the hydraulic oil when the hydraulic system is running, but also continue to cool the hydraulic oil when the hydraulic system stops working, which is energy-saving and environmentally friendly; when the hydraulic system fails, the hydraulic oil cooling device disclosed in the present invention can still cool the hydraulic oil.

[0031] It should be noted that the pumping structure 4 can be configured as a water pump, wherein the coolant can be water or other liquid cooling medium, and the present disclosure does not limit this. In addition, the first pipeline 21 can be made of a material with good thermal conductivity, such as a metal material, and the present disclosure does not limit this. In addition, the structure and working principle of the radiator 3 are well known to those skilled in the art, and the present disclosure does not elaborate on this.

[0032] In the exemplary embodiment of the present disclosure, referring to Figure 1 As shown in , at least one fan 5 may be provided on the radiator 3. In this way, the fan 5 can dissipate the heat at the radiator 3 in a timely manner, realize circulating heat dissipation, and improve the heat dissipation performance of the radiator 3. Here, according to some embodiments, a plurality of fans 5 may be provided on the radiator 3, and the present disclosure does not limit this.

[0033] In the exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 2 As shown in , the first pipeline 21 can be installed at the bottom of the oil storage chamber 11. Here, when the hydraulic system calls the hydraulic oil normally, a certain amount of hydraulic oil is generally retained in the hydraulic oil tank 1. Therefore, installing the first pipeline 21 at the bottom of the oil storage chamber 11 can ensure that the outer wall of the first pipeline 21 is in contact with the hydraulic oil, thereby avoiding the phenomenon that the outer wall of the first pipeline 21 does not contact the hydraulic oil.

[0034] In the exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 3As shown in , the second pipeline 22 includes a liquid outlet pipe 221 and a liquid return pipe 222, the liquid outlet pipe 221 is connected to the upstream of the first pipeline 21, the liquid return pipe 222 is connected to the downstream of the first pipeline 21, the radiator 3 is connected between the liquid outlet pipe 221 and the liquid return pipe 222, and the pumping structure 4 is connected to the liquid outlet pipe 221. Here, the coolant is pumped into the first pipeline 21 through the liquid outlet pipe 221, and the temperature rises after heat exchange with the hydraulic oil and enters the oil return pipe, and then the coolant enters the radiator 3, and returns to the liquid outlet pipe 221 after being cooled by the radiator 3, and dissipates heat for the hydraulic oil in a reciprocating cycle.

[0035] In some embodiments of the present disclosure, reference Figure 1 and Figure 3 As shown in , the hydraulic oil heat sink may include a liquid storage tank 61, a liquid replenishing pipe 62 is connected between the liquid storage tank 61 and the liquid outlet pipe 221, and a liquid discharge pipe 63 is connected between the liquid storage tank 61 and the liquid return pipe 222. In this way, when the coolant in the cooling circuit 2 is insufficient, the liquid storage tank 61 can replenish the coolant into the cooling circuit 2 through the liquid replenishing pipe 62; when the coolant in the cooling circuit 2 is excessive, the excess coolant in the cooling circuit 2 can flow back to the liquid storage tank 61 through the liquid discharge pipe 63. In this way, the heat dissipation performance of the hydraulic oil heat sink can be guaranteed.

[0036] In some embodiments of the present disclosure, reference Figure 1 and Figure 3 As shown in the figure, a first one-way valve 71 can be connected between the infusion pipe 62 and the outlet pipe 221. The first one-way valve 71 is used to limit the coolant in the outlet pipe 221 from flowing into the infusion pipe 62. In this way, it can be prevented that the coolant in the outlet pipe 221 accidentally flows back into the infusion pipe 62; a second one-way valve 72 is connected between the drain pipe 63 and the return pipe 222. The second one-way valve 72 is used to limit the coolant in the drain pipe 63 from flowing into the return pipe 222. In this way, it can be prevented that the coolant in the storage tank 61 accidentally flows back into the return pipe 222 through the drain pipe 63.

[0037] In the exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 3 As shown in , the hydraulic oil heat sink may include at least two cooling circuits 2 arranged in parallel, and the liquid outlet pipe 221 in each cooling circuit 2 is connected to the pumping structure 4. In this way, the heat dissipation performance of the hydraulic oil heat sink can be improved.

[0038] In some embodiments of the present disclosure, reference Figure 1 and Figure 3As shown in FIG, the liquid outlet pipes 221 in at least two cooling circuits 2 are both connected to the first one-way valve 71, and the liquid return pipes 222 in at least two cooling circuits 2 are both connected to the second one-way valve 72. In this way, the number of the first one-way valve 71 and the second one-way valve 72 can be reduced, and the structure of the hydraulic oil heat dissipation device can be simplified.

[0039] In the exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 3 As shown in , the hydraulic oil heat dissipation device may include a controller 9 and a temperature sensor 8 disposed in the oil storage chamber 11. The temperature sensor 8 and the pumping structure 4 are electrically connected to the controller 9. The controller 9 is used to control the rotation speed of the pumping structure 4 according to the temperature sensor 8, and / or to control the start and stop of the pumping structure 4. In this way, when the temperature sensor 8 detects that the temperature of the hydraulic oil is high, the controller 9 controls the pumping structure 4 to start, and the coolant circulates in the cooling circuit 2 to dissipate the heat of the hydraulic oil; when the temperature sensor 8 detects that the temperature of the hydraulic oil is too high, the controller 9 can increase the rotation speed of the pumping structure 4. Conversely, when the temperature sensor 8 detects that the temperature of the hydraulic oil is too low, the controller 9 can reduce the rotation speed of the pumping structure 4 or control the pumping structure 4 to stop working.

[0040] In some embodiments of the present disclosure, reference Figure 1 and Figure 3 As shown in , the hydraulic oil heat dissipation device may include at least one fan 5 disposed on the radiator 3, and the fan 5 may be electrically connected to the controller 9. Accordingly, when the temperature sensor 8 detects that the hydraulic oil temperature is high, the controller 9 controls the fan 5 to start; when the temperature sensor 8 detects that the hydraulic oil temperature is too high, the controller 9 may increase the speed of the fan 5; conversely, when the temperature sensor 8 detects that the hydraulic oil temperature is too low, the controller 9 may reduce the speed of the fan 5 or control the fan 5 to stop working.

[0041] According to the second aspect of the present disclosure, a hydraulic device is provided, comprising the hydraulic oil heat sink as described above. The hydraulic device has all the beneficial effects of the hydraulic oil heat sink as described above, which are not described in detail in the present disclosure. Here, the hydraulic device may also include the hydraulic system as described above. In some embodiments, the hydraulic device may be constructed as engineering machinery, such as a forklift, a crane, etc. In other embodiments, the hydraulic device may be a hydraulic device for a passenger car, that is, the hydraulic device may be a part of a passenger car. In other embodiments, the hydraulic device may also be constructed as a press, etc., which is not limited in the present disclosure.

[0042] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0043] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0044] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A hydraulic oil heat dissipation device, characterized in that: include: A hydraulic oil tank having an oil storage chamber; A cooling circuit, comprising a first pipeline passing through the oil storage chamber and a second pipeline arranged outside the hydraulic oil tank, wherein the first pipeline has a flow channel for the flow of coolant, and the flow channel is separated from the oil storage chamber; a radiator, connected to the second pipeline; as well as The pumping structure is connected to the second pipeline and is configured to make the coolant in the cooling circuit flow along a preset direction.

2. The hydraulic oil heat sink according to claim 1, characterized in that: At least one fan is arranged on the radiator.

3. The hydraulic oil heat sink according to claim 1, characterized in that: The first pipeline is arranged through the bottom of the oil storage cavity.

4. The hydraulic oil heat sink according to claim 1, characterized in that: The second pipeline includes a liquid outlet pipe and a liquid return pipe, the liquid outlet pipe is connected to the upstream of the first pipeline, the liquid return pipe is connected to the downstream of the first pipeline, the radiator is connected between the liquid outlet pipe and the liquid return pipe, and the pumping structure is connected to the liquid outlet pipe.

5. The hydraulic oil heat dissipation device according to claim 4, characterized in that: The hydraulic oil heat dissipation device comprises a liquid storage tank, a liquid replenishing pipe is connected between the liquid storage tank and the liquid outlet pipe, and a liquid draining pipe is connected between the liquid storage tank and the liquid return pipe.

6. The hydraulic oil heat sink according to claim 5, characterized in that: A first one-way valve is connected between the infusion pipe and the outlet pipe, and the first one-way valve is used to limit the coolant in the outlet pipe from flowing into the infusion pipe; a second one-way valve is connected between the discharge pipe and the return pipe, and the second one-way valve is used to limit the coolant in the discharge pipe from flowing into the return pipe.

7. The hydraulic oil heat dissipation device according to any one of claims 4 to 6, characterized in that: The hydraulic oil heat dissipation device comprises at least two cooling circuits arranged in parallel, and the liquid outlet pipe in each cooling circuit is connected to the pumping structure.

8. The hydraulic oil heat sink according to claim 7, characterized in that: The liquid outlet pipes in at least two cooling circuits are both communicated with the first one-way valve, and the liquid return pipes in at least two cooling circuits are both communicated with the second one-way valve.

9. The hydraulic oil heat sink according to claim 1, characterized in that: The hydraulic oil heat dissipation device includes a controller and a temperature sensor arranged in the oil storage chamber. The temperature sensor and the pumping structure are electrically connected to the controller. The controller is used to control the rotation speed of the pumping structure and / or control the start and stop of the pumping structure according to the temperature sensor.

10. A hydraulic device, characterized in that: A hydraulic oil heat dissipation device comprising any one of claims 1-9.

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