Oil circulating system and lubricating system

Abstract

The utility model provides an oil circulation system and a lubrication system, the oil circulation system comprises a circulation loop connected to an oil tank, the circulation loop is provided with a first power device and a first temperature control valve, the first temperature control valve is provided with a first oil outlet pipeline and a second oil outlet pipeline to return oil to the oil tank, and the first oil outlet pipeline is provided with a first radiator. According to the oil circulation system, the circulation loop is connected to the oil tank, and the function that the lubricating medium in the oil tank circularly flows along the circulation loop is achieved through the first power device; the flow of the first oil outlet pipeline and the flow of the second oil outlet pipeline are adjusted through the valve opening degree of the first temperature control valve, adjustment of the temperature of the lubricating medium is achieved, it is guaranteed that the temperature of the lubricating medium is within the required temperature range, and then the lubricating performance is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of lubrication, in particular to an oil circulation system and a lubrication system. Background Art

[0002] Fracturing equipment is required at all fracturing operations in oil and gas fields around the world. During operation, the fracturing plunger pump, a key executive component of the fracturing equipment, experiences sliding or rolling friction within its internal parts. This process requires the presence of a lubricating medium to establish a lubricating oil film and remove heat and impurities generated by friction. Otherwise, the dry friction of components during operation will cause rapid temperature increases. If the temperature rise cannot be effectively controlled, the components will fail, rendering the equipment inoperable. The performance of the lubricating medium is significantly affected by temperature, and existing lubrication systems lack a solution for regulating the temperature of the lubricating medium. Excessively high or low lubricating medium temperatures can adversely affect the lubrication effect. Utility Model Content

[0003] The main purpose of the utility model is to provide an oil circulation system and a lubrication system to solve the technical problem in the prior art that the lubrication effect is affected by the lubrication medium temperature being too high or too low.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an oil circulation system, including a circulation loop connected to an oil tank, the circulation loop is provided with a first power device and a first temperature control valve, the first temperature control valve is provided with a first oil outlet pipeline and a second oil outlet pipeline to return oil to the oil tank, and the first oil outlet pipeline is provided with a first radiator.

[0005] Furthermore, a first heater is provided on the second oil outlet pipeline; and / or a second heater is provided on the circulation loop; and / or a third heater is provided on the oil tank.

[0006] Furthermore, a first filter is provided on the circulation loop.

[0007] Furthermore, a first differential pressure detection device is provided on the first filter.

[0008] Furthermore, a first oil detection device is provided on the circulation loop.

[0009] Furthermore, the first power device includes a first driving member and a first circulating pump, and the first driving member is drivingly connected to the first circulating pump.

[0010] The utility model also provides a lubrication system, including an oil tank, a component to be lubricated, a lubrication circuit and the oil circulation system, the lubrication circuit including a lubrication supply pipeline and a lubrication return pipeline, the oil tank is connected to the inlet of the component to be lubricated through the lubrication supply pipeline, the oil tank is connected to the outlet of the component to be lubricated through the lubrication return pipeline, and a second power element is provided on the lubrication circuit.

[0011] Furthermore, a second filter is provided on the lubrication circuit.

[0012] Furthermore, a second temperature control valve is provided on the lubricating oil supply pipeline, the second temperature control valve is provided with a third oil outlet pipeline and a fourth oil outlet pipeline to supply oil to the lubricated parts, and a second radiator is provided on the third oil outlet pipeline.

[0013] Furthermore, it also includes a first safety circuit, which is provided with a first safety valve. One end of the first safety circuit is connected to the lubricating oil supply pipeline, and the other end is connected to the oil tank.

[0014] In the oil circulation system of the present invention, the oil circulation system is connected to the oil tank through a circulation loop, and the lubricating medium in the oil tank is circulated along the circulation loop by a first power device; a first temperature control valve is provided on the circulation loop, and the first temperature control valve can adjust the valve opening according to the temperature of the lubricating medium. The first temperature control valve is provided with a first oil outlet pipeline and a second oil outlet pipeline, and a first radiator is provided on the first oil outlet pipeline to dissipate heat and cool the lubricating medium. The flow of the first oil outlet pipeline and the second oil outlet pipeline is adjusted by the valve opening of the first temperature control valve, thereby realizing the adjustment of the temperature of the lubricating medium, ensuring that the temperature of the lubricating medium is within the required temperature range, and thus ensuring the lubrication performance.

[0015] The lubrication system in the present invention has all the beneficial effects of the above-mentioned oil circulation system, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of an oil circulation system provided by an embodiment of the present utility model;

[0018] Figure 2 The second schematic diagram of the oil circulation system provided by the embodiment of the utility model;

[0019] Figure 3 The third schematic diagram of the oil circulation system provided by the embodiment of the present utility model;

[0020] Figure 4 A fourth schematic diagram of an oil circulation system provided in an embodiment of the present utility model;

[0021] Figure 5 A fifth schematic diagram of an oil circulation system provided in an embodiment of the present utility model;

[0022] Figure 6 Schematic diagram of the oil circulation system provided by the embodiment of the present utility model No. 6;

[0023] Figure 7 Schematic diagram of the oil circulation system provided by the embodiment of the present utility model No. 7;

[0024] Figure 8 Schematic diagram of the oil circulation system provided by the embodiment of the present utility model No. 8;

[0025] Figure 9 A ninth schematic diagram of an oil circulation system provided in an embodiment of the present utility model;

[0026] Figure 10 Schematic diagram of the oil circulation system provided by the embodiment of the present utility model No. 10;

[0027] Figure 11 Schematic diagram of the oil circulation system provided by the embodiment of the utility model eleven;

[0028] Figure 12 Schematic diagram of the oil circulation system provided by the embodiment of the utility model, No. 12;

[0029] Figure 13 This is a schematic diagram of a lubrication system provided by an embodiment of the present utility model;

[0030] Figure 14 A second schematic diagram of a lubrication system provided by an embodiment of the present utility model;

[0031] Figure 15 A third schematic diagram of a lubrication system provided in an embodiment of the present utility model;

[0032] Figure 16 A fourth schematic diagram of a lubrication system provided in an embodiment of the present invention;

[0033] Figure 17 A fifth schematic diagram of a lubrication system provided in an embodiment of the present utility model;

[0034] Figure 18 A sixth schematic diagram of a lubrication system provided in an embodiment of the present utility model;

[0035] Figure 19Schematic diagram of the lubrication system provided by the embodiment of the present utility model No. 7;

[0036] Figure 20 Schematic diagram of the lubrication system provided by the embodiment of the present utility model No. 8;

[0037] Figure 21 The ninth schematic diagram of the lubrication system provided in the embodiment of the present utility model.

[0038] The above drawings include the following reference numerals:

[0039] 100, fuel tank; 1, circulation loop; 11, first power unit; 111, first drive element; 112, first circulation pump; 12, first temperature control valve; 121, first oil outlet line; 1211, first radiator; 122, second oil outlet line; 1221, first heater; 13, second heater; 14, third heater; 15, first filter; 151, first differential pressure sensor; 152, first pressure sensor; 153, second pressure sensor; 16, first oil detection device;

[0040] 200. Parts to be lubricated;

[0041] 300, lubrication circuit; 301, lubrication oil supply line; 302, lubrication oil return line; 31, second power element; 311, second drive element; 312, second circulation pump; 32, second filter; 33, second temperature control valve; 331, third oil outlet line; 3311, second radiator; 332, fourth oil outlet line; 34, first detection element; 35, second detection element;

[0042] 400, first safety circuit; 41, first safety valve. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary, rather than as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0046] An embodiment of the present utility model provides an oil circulation system, including a circulation loop 1 connected to an oil tank 100, wherein the circulation loop 1 is provided with a first power device 11 and a first temperature control valve 12, the first temperature control valve 12 is provided with a first oil outlet pipeline 121 and a second oil outlet pipeline 122 to return oil to the oil tank 100, and the first oil outlet pipeline 121 is provided with a first radiator 1211.

[0047] Combine Figure 1 and Figure 2 As shown, both ends of the circulation loop 1 are connected to the oil tank 100, so that the lubricating medium in the oil tank 100 can enter the circulation loop 1 from the oil tank 100, undergo functional processing such as lubricating medium heating and lubricating medium filtering, and then return to the oil tank 100. Corresponding functional components can be provided in the oil circulation system as needed, and the specific functional components are not specifically limited here.

[0048] The first power device 11 can provide mechanical energy to the lubricating medium, enabling the lubricating medium to flow. Optionally, the first power device 11 includes a first driving member 111 and a first circulating pump 112, wherein the first driving member 111 is drivingly connected to the first circulating pump 112. The first driving member 111 can be, for example, an electric motor or a hydraulic motor, and the first circulating pump 112 can be, for example, a gear pump or a vane pump. The first driving member 111 can drive the first circulating pump 112 to operate, enabling the first circulating pump 112 to provide mechanical energy to the lubricating medium.

[0049] A first temperature control valve 12 is provided on the circulation loop 1. The first temperature control valve 12 is usually provided with at least one inlet and at least two outlets. The first temperature control valve 12 can adjust the valve opening according to the temperature of the lubricating medium entering from the inlet, thereby adjusting the flow direction of the lubricating medium (the flow rate flowing out from different outlets).

[0050] In this embodiment, the first temperature control valve 12 has an inlet and two outlets. The lubricating medium in the circulation loop 1 enters the first temperature control valve 12 from the inlet. One of the two outlets is connected to a first oil outlet pipeline 121, and the other outlet is connected to a second oil outlet pipeline 122. The first oil outlet pipeline 121 is provided with a first radiator 1211 to Figure 2 For example, no other components are installed on the second oil outlet line 122. When the lubricating medium temperature is too high, the opening of the first temperature control valve 12 is adjusted accordingly, allowing more lubricating medium to enter the first oil outlet line 121. When the lubricating medium temperature is low, the opening of the first temperature control valve 12 is adjusted accordingly, allowing more lubricating medium to enter the second oil outlet line 122. When the lubricating medium temperature meets the requirements, the lubricating medium enters the first oil outlet line 121 and the second oil outlet line 122 in a predetermined ratio. Afterwards, the lubricating medium flows through the first oil outlet line 121 and the second oil outlet line 122 and merges to return to the oil tank 100, gradually adjusting the lubricating medium temperature in the oil tank 100.

[0051] In the oil circulation system of the present invention, the circulation loop 1 is connected to the oil tank 100, and the first power device 11 is used to realize the function of oil circulation of the lubricating medium in the oil tank 100 along the circulation loop 1; a first temperature control valve 12 is provided on the circulation loop 1, and the first temperature control valve 12 can adjust the valve opening according to the temperature of the lubricating medium. The first temperature control valve 12 is provided with a first oil outlet pipeline 121 and a second oil outlet pipeline 122. The first oil outlet pipeline 121 is provided with a first radiator 1211 to dissipate heat and cool the lubricating medium. The flow of the first oil outlet pipeline 121 and the second oil outlet pipeline 122 is adjusted by the valve opening of the first temperature control valve 12, thereby realizing the adjustment of the temperature of the lubricating medium, ensuring that the temperature of the lubricating medium is within the required temperature range, and thus ensuring the lubrication performance.

[0052] Further, combined with Figure 1 As shown, a first heater 1221 is provided on the second oil outlet pipeline 122 .

[0053] A first radiator 1211 is provided on the first oil outlet line 121, and a first heater 1221 is provided on the second oil outlet line 122. After passing through the first temperature-controlled valve 12, the lubricating medium enters the first oil outlet line 121 and / or the second oil outlet line 122, depending on the valve opening. When the lubricating medium temperature is too low, the lubricating medium is heated more by the first heater 1221. When the lubricating medium temperature is too high, the lubricating medium is cooled more by the first radiator 1211. When the lubricating medium temperature meets the required level, the lubricating medium enters the first oil outlet line 121 and the second oil outlet line 122 in a predetermined ratio.

[0054] Optionally, combined Figures 2 to 4 As shown, a second heater 13 is provided on the circulation loop 1 .

[0055] First oil outlet line 121 is equipped with a first radiator 1211, while second oil outlet line 122 is not equipped with any other components (first heater 1221 may be retained). A second heater 13 is provided in circulation loop 1 (second heater 13 is preferably located upstream of first thermostatic valve 12 to ensure accurate temperature regulation). After passing through first thermostatic valve 12, the lubricating medium enters first oil outlet line 121 and / or second oil outlet line 122, depending on the valve opening. When the lubricating medium temperature is too low, more lubricating medium enters second oil outlet line 122, maintaining the temperature of the already heated lubricating medium. When the lubricating medium temperature is too high, more lubricating medium flows through first radiator 1211 to cool it down. When the lubricating medium temperature meets the required level, the lubricating medium enters first oil outlet line 121 and second oil outlet line 122 in a predetermined ratio.

[0056] Optionally, combined Figures 5 and 6 As shown, the fuel tank 100 is provided with a third heater 14 .

[0057] In this case, the circulation loop 1 may or may not be equipped with the second heater 13; similarly, the first heater 1221 may or may not be provided. When the lubricating medium temperature is too low, more of the lubricating medium enters the second oil outlet line 122, maintaining the temperature of the already heated lubricating medium. When the lubricating medium temperature is too high, more of the lubricating medium passes through the first radiator 1211 for cooling. When the lubricating medium temperature meets the requirements, the lubricating medium enters the first oil outlet line 121 and the second oil outlet line 122 in a predetermined ratio.

[0058] In this way, by setting the first heater 1221, and / or the second heater 13, and / or the third heater 14, the oil circulation system can perform temperature control over a larger range, ensuring that the temperature of the lubricating medium is within the required temperature range, thereby better ensuring the lubrication performance.

[0059] Further, combined with Figures 7 to 9 As shown, a first filter 15 is provided on the circulation loop 1 .

[0060] The first filter 15 can be arranged at any position of the circulation loop 1 as required, so as to filter the lubricating medium entering and flowing through the circulation loop 1, filter out impurities in the lubricating medium, and prevent these impurities from returning to the oil tank 100.

[0061] Furthermore, a first differential pressure detection device is provided on the first filter 15 .

[0062] Combine Figure 10 As shown in the figure, one embodiment of the first pressure difference detection device is shown, that is, the first pressure difference detection device includes a first pressure difference sensor 151, and the two ends of the first pressure difference sensor 151 are respectively connected to the inlet and outlet of the first filter 15, so that the pressure difference at both ends of the first filter 15 can be directly collected.

[0063] Combine Figure 11 As shown in the figure, another embodiment of the first pressure difference detection device is shown, that is, the first pressure difference detection device includes a first pressure sensor 152 and a second pressure sensor 153, the first pressure sensor 152 is connected to the outlet of the first filter 15, and the second pressure sensor 153 is connected to the inlet of the first filter 15, and the pressure difference at both ends of the first filter 15 is determined by collecting the inlet pressure and outlet pressure of the first filter 15.

[0064] In this way, by collecting the pressure difference data at both ends of the first filter 15, the filter maintenance and replacement function can be reminded. A certain pressure difference threshold can be set as needed to remind the staff to replace the filter when the pressure difference exceeds the threshold to ensure the filtering performance of the filter.

[0065] Furthermore, a first oil detection device 16 is provided on the circulation loop 1 .

[0066] Combine Figure 12As shown, the first oil detection device 16 can be set at any position of the circulation loop 1 as needed. The first oil detection device 16 can detect the cleanliness condition of the lubricating medium, including parameters such as moisture, particle size, saturation, etc. (for example, detecting particulate matter through a magnetic device). When an abnormality in the cleanliness condition is detected (which can be obtained based on comparison with normal data, and normal data can be set in the control system), the control system will alarm to remind the staff to ensure that maintenance work such as lubricating medium replacement and filter element replacement is carried out in time.

[0067] The utility model also provides a lubrication system, combined with Figure 1 、 Figure 2 and Figure 13 As shown, it includes an oil tank 100, a component to be lubricated 200, a lubrication circuit 300 and the oil circulation system. The lubrication circuit 300 includes a lubrication supply pipeline 301 and a lubrication return pipeline 302. The oil tank 100 is connected to the inlet of the component to be lubricated 200 through the lubrication supply pipeline 301, and the oil tank 100 is connected to the outlet of the component to be lubricated 200 through the lubrication return pipeline 302. A second power element 31 is provided on the lubrication circuit 300.

[0068] Combine Figure 13 As shown, the figure shows a lubrication system including an oil circulation system, which only briefly shows the circulation loop 1, the second heater 13, and the first power device 11 in the oil circulation system. It can also adopt the above-mentioned oil circulation system, for example Figure 1 and Figure 2 As shown in .

[0069] Combine Figure 13 As shown, the oil circulation system and the lubrication system can use the same oil tank or different oil tanks. The oil tank 100 is connected to the inlet of the component to be lubricated 200 through the lubrication supply pipeline 301, and the oil tank 100 is connected to the outlet of the component to be lubricated 200 through the lubrication return pipeline 302. A second power element 31 is provided on the lubrication circuit 300 to enable the lubricating medium in the lubrication circuit 300 to flow.

[0070] Optionally, the second power element 31 includes a second driving member 311 and a second circulating pump 312, and the second driving member 311 is drivingly connected to the second circulating pump 312. The second driving member 311 can be, for example, an electric motor or a hydraulic motor, and the second circulating pump 312 can be, for example, a gear pump or a vane pump. The second driving member 311 drives the second circulating pump 312, so that the lubricating medium flows in the lubrication circuit 300.

[0071] In the lubrication system of the present invention, the lubricating medium enters the lubricated component 200 through the lubricating oil supply pipeline 301 to play a lubricating role through the second power element 31, and then returns to the oil tank 100 through the lubricating oil return pipeline 302; it includes the above-mentioned oil circulation system, which is connected to the oil tank 100 through the circulation loop 1, and realizes the function of oil circulation of the lubricating medium in the oil tank 100 along the circulation loop 1 through the first power device 11; a first temperature control valve 12 is provided on the circulation loop 1, and the first temperature control valve 12 can adjust the valve opening according to the temperature of the lubricating medium. The first temperature control valve 12 is provided with a first oil outlet pipeline 121 and a second oil outlet pipeline 122. The first oil outlet pipeline 121 is provided with a first radiator 1211 to dissipate heat and cool the lubricating medium. The flow rate of the first oil outlet pipeline 121 and the second oil outlet pipeline 122 is adjusted by the valve opening of the first temperature control valve 12, thereby adjusting the temperature of the lubricating medium, ensuring that the temperature of the lubricating medium is within the required temperature range, and thus ensuring the lubrication performance.

[0072] Furthermore, a second filter 32 is provided on the lubrication circuit 300 .

[0073] Combine Figure 13 As shown, a second filter 32 can be provided at any position on the lubrication circuit 300 to filter impurities, thereby preventing the impurities from entering the lubricated component 200 or accumulating in the oil tank 100, thereby preventing the impurities from causing wear to related components.

[0074] Furthermore, a second temperature control valve 33 is provided on the lubricating oil supply pipeline 301 , and the second temperature control valve 33 is provided with a third oil outlet pipeline 331 and a fourth oil outlet pipeline 332 to supply oil to the lubricated component 200 , and a second radiator 3311 is provided on the third oil outlet pipeline 331 .

[0075] Combine Figure 14 As shown, the second temperature-controlled valve 33 is installed on the lubricating oil supply line 301. A second radiator 3311 is installed on the third oil outlet line 331 of the second temperature-controlled valve 33. A fourth heater may or may not be installed on the fourth oil outlet line 332. The second temperature-controlled valve 33 can adjust the valve opening according to the temperature of the lubricating medium. When the lubricating medium temperature is too high, more lubricating medium enters the third oil outlet line 331. When the lubricating medium temperature is too low, more lubricating medium enters the fourth oil outlet line 332. When the lubricating medium temperature meets the requirements, the lubricating medium enters the third oil outlet line 331 and the fourth oil outlet line 332 in a predetermined ratio.

[0076] In this way, the flow of the third oil outlet pipeline 331 and the fourth oil outlet pipeline 332 is regulated by the valve opening of the second temperature control valve 33, thereby adjusting the temperature of the lubricating medium, ensuring that the temperature of the lubricating medium is within the required temperature range, and thus ensuring the lubrication performance.

[0077] Optionally, a first detection element 34 and a second detection element 35 are provided on the lubrication circuit 300 .

[0078] Combine Figures 15 to 17 As shown, the first detection element 34 and the second detection element 35 can be set at any position of the lubrication circuit 300. The first detection element 34 and the second detection element 35 can respectively detect the temperature and pressure of the lubrication medium to facilitate corresponding control of the lubrication system.

[0079] Preferably, it further includes a first safety circuit 400 , on which a first safety valve 41 is provided. One end of the first safety circuit 400 is connected to the lubricating oil supply pipeline 301 , and the other end is connected to the oil tank 100 .

[0080] Combine Figure 18 As shown, one end of the first safety circuit 400 is connected to the outlet of the second power element 31, and the other end of the first safety circuit 400 is connected to the oil tank 100. The first safety valve 41 is arranged on the first safety circuit 400. When the pressure of the lubricating medium is too high, the first safety valve 41 will open, and the lubricating medium will return to the oil tank 100 through the first safety circuit 400, thereby protecting the lubrication system.

[0081] Combine Figure 19 As shown, there are two first safety circuits 400, one of which is connected to Figure 18 one end of the other first safety circuit 400 is connected to the inlet of the lubricated component 200, and the other end is connected to the oil tank 100. In this way, the safety performance of the lubrication system can be further improved to avoid affecting the lubricated component 200.

[0082] It should be noted that the lubrication circuit 300 in the present invention includes a lubrication oil supply pipeline 301 and a lubrication oil return pipeline 302, and the specific number of the lubrication oil supply pipeline 301 and the lubrication oil return pipeline 302 is not limited here. Figure 20 and Figure 21 As shown in the figure, there are two lubricating oil supply pipelines 301 and one lubricating oil return pipeline 302. It is understood that the multiple lubricating oil supply pipelines 301 can correspond to different lubrication positions of a component 200 to be lubricated, or can correspond to multiple components 200 to be lubricated. In addition, the specific number of lubricating oil return pipelines 302 can also be designed as needed, which will not be repeated here.

[0083] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0084] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0085] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0086] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An oil circulation system, characterized in that: It includes a circulation loop connected to the oil tank, wherein the circulation loop is provided with a first power device and a first temperature control valve, the first temperature control valve is provided with a first oil outlet pipeline and a second oil outlet pipeline to return oil to the oil tank, and the first oil outlet pipeline is provided with a first radiator.

2. The oil circulation system according to claim 1, characterized in that: A first heater is provided on the second oil outlet pipeline; and / or a second heater is provided on the circulation loop; and / or a third heater is provided on the oil tank.

3. The oil circulation system according to claim 1, characterized in that: A first filter is provided on the circulation loop.

4. The oil circulation system according to claim 3, characterized in that: The first filter is provided with a first pressure difference detection device.

5. The oil circulation system according to claim 1, characterized in that: A first oil detection device is provided on the circulation loop.

6. The oil circulation system according to claim 1, characterized in that: The first power device includes a first driving member and a first circulating pump, and the first driving member is drivingly connected to the first circulating pump.

7. A lubrication system, characterized in that: It comprises an oil tank, a part to be lubricated, a lubrication circuit and an oil circulation system according to any one of claims 1 to 6, wherein the lubrication circuit comprises a lubrication supply pipeline and a lubrication return pipeline, the oil tank is connected to the inlet of the part to be lubricated through the lubrication supply pipeline, the oil tank is connected to the outlet of the part to be lubricated through the lubrication return pipeline, and a second power element is provided on the lubrication circuit.

8. The lubrication system according to claim 7, characterized in that A second filter is provided on the lubrication circuit.

9. The lubrication system according to claim 7, characterized in that: The lubricating oil supply pipeline is provided with a second temperature control valve, the second temperature control valve is provided with a third oil outlet pipeline and a fourth oil outlet pipeline to supply oil to the lubricated component, and the third oil outlet pipeline is provided with a second radiator.

10. The lubrication system according to claim 7, characterized in that It also includes a first safety circuit, which is provided with a first safety valve. One end of the first safety circuit is connected to the lubricating oil supply pipeline, and the other end is connected to the oil tank.

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